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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 5725. Отображено 100.
29-03-2012 дата публикации

magnetic material

Номер: US20120076684A1
Автор: James W. Herchenroeder, Zhongmin Chen
Принадлежит: Magnequench International LLC

There is disclosed a magnetic material having a composition in atomic percentage of: (MM 1-a R a ) u Fe 100-u-v-w-x-y Y v M w T x B y wherein MM is a mischmetal or a synthetic equivalent thereof; R is Nd, Pr or a combination thereof; Y is a transition metal other than Fe; M is one or more of a metal selected from Groups 4 to 6 of the periodic table; and T is one or more of a metal other than B, selected from Groups 11 to 14 of the periodic table, wherein 0≦a≦1, 7≦u≦13, 0≦v≦20, 0≦w≦5; 0≦x≦5 and 4≦y≦12.

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Номер записи: 1
24-05-2012 дата публикации

Method for heating lightweight metal ingots

Номер: US20120125569A1
Автор: Eduard Morbitzer, Robert Ebner
Принадлежит: EBNER INDUSTRIEOFENBAU GMBH

A method is described for heating lightweight metal ingots ( 1 ), with the lightweight metal ingots ( 1 ) being heated in a furnace ( 2 ) by hot burner exhaust gases. In order to provide advantageous heating conditions it is proposed that the lightweight metal ingots ( 1 ), prior to their heating in the furnace ( 2 ), are preheated via at least one preheating apparatus ( 9 ) which rests in a planar manner thereon and is supplied by a fluid heat carrier which is heated in heat exchange by the hot exhaust gases from the furnace ( 2 ) and is guided in a circuit ( 7 ).

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Номер записи: 2
28-02-2013 дата публикации

SYSTEM FOR PRODUCING NdFeB SYSTEM SINTERED MAGNET

Номер: US20130052290A1
Автор: Shinichi Hayashi
Принадлежит: Intermetallics Co Ltd

A NdFeB sintered magnet production system including: a first weight unit for measuring the mold weight when the alloy powder is not yet filled; a guide attachment unit to extend the mold cavity with a guide to form a supply cavity with a predetermined volume; a powder supply unit for supplying the alloy powder into the supply cavity so that the alloy powder volume is equal to the supply cavity capacity; a filling unit for pressing the alloy powder contained in the supply cavity into the mold cavity to densify the alloy powder to the filling density; a second weight unit for measuring the mold weight after being filled with the alloy powder; and a controlling unit for computing the alloy powder weight filled into the mold cavity based on the difference between the measurement value from each of the first weight unit and the second weight unit.

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Номер записи: 3
28-03-2013 дата публикации

Industrial Furnace with Atmosphere Pressurizing Device

Номер: US20130078590A1
Автор: Chin-Tao Chiang
Принадлежит: JIU CHUNG INDUSTRIAL Co Ltd

An industrial furnace comprises a main body, multiple heating sets, multiple heat-distributing plates, and an atmosphere pressurizing device. The main body defines a space therein. The heating sets are provided in the main body and arranged evenly above or below the space. The heat-distributing plates are provided corresponding to the heating sets, each plate being mounted between the space and one of the heating sets, so that the space is located between the heat-distributing plates. The atmosphere pressurizing device is mounted on the main body and provided with a conduit for communicating with the space. Thereby, the atmosphere pressurizing device can supply an inert atmosphere to the space via the conduit. The inert atmosphere will have a pressure greater than that of the gas if sublimated from the graphite so that the heat-distributing plates can be prevented from being damaged after a long time of use.

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Номер записи: 4
16-05-2013 дата публикации

STEEL SHEET FOR HOT PRESSING AND METHOD OF MANUFACTURING HOT-PRESSED PART USING STEEL SHEET FOR HOT PRESSING

Номер: US20130122322A1
Автор: Miyoshi Tatsuya, Nakajima Seiji, Nakamaru Hiroki
Принадлежит: JFE STEEL CORPORATION

In order to provide a steel sheet for hot pressing from which a hot-pressed part excellent in perforation corrosion resistance is obtainable and a method of manufacturing a hot-pressed part using the steel sheet for hot pressing, provided is a steel sheet for hot pressing having, sequentially on a surface of a base steel sheet: a plating layer I containing 60% by mass or more of Ni and the remainder consisting of Zn and inevitable impurities, a coating mass thereof being 0.01 to 5 g/m; and a plating layer II containing 10 to 25% by mass of Ni and the remainder consisting of Zn and inevitable impurities, a coating mass thereof being 10 to 90 g/m. 1. A steel sheet for hot pressing , comprising sequentially on a surface of a base steel sheet:{'sup': '2', 'a plating layer I containing 60% by mass or more of Ni and the remainder consisting of Zn and inevitable impurities, a coating mass thereof being 0.01 to 5 g/m; and'}{'sup': '2', 'a plating layer II containing 10 to 25% by mass of Ni and the remainder consisting of Zn and inevitable impurities, a coating mass thereof being 10 to 90 g/m.'}2. The steel sheet for hot pressing according to claim 1 , further comprising claim 1 , on the plating layer II claim 1 , at least one kind of compound layer selected from: a Si-containing compound layer; a Ti-containing compound layer; an Al-containing compound layer; and a Zr-containing compound layer.3. The steel sheet for hot pressing according to claim 1 , wherein the base steel sheet has a component composition comprising claim 1 , in % by mass: 0.15 to 0.5% of C; 0.05 to 2.0% of Si; 0.5 to 3% of Mn; 0.1% or less of P; 0.05% or less of S; 0.1% or less of Al; and 0.01% or less of N claim 1 , the remainder of the component composition consisting of Fe and inevitable impurities.4. The steel sheet for hot pressing according to claim 3 , wherein the base steel sheet further contains at least one kind selected from claim 3 , in % by mass: 0.01 to 1% of Cr; 0.2% or less of Ti; and 0. ...

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Номер записи: 5
06-06-2013 дата публикации

GRAIN ORIENTED ELECTRICAL STEEL SHEET

Номер: US20130143004A1
Автор: Inoue Hirotaka, Okabe Seiji, Takashima Minoru
Принадлежит: JFE STEEL CORPORATION

A grain oriented electrical steel sheet has grooves on one surface of the steel sheet formed for magnetic domain refining, the steel sheet including a forsterite film and a tension coating on front and back surfaces of the steel sheet, wherein the tension coating is applied on a surface with the grooves in a coating amount A (g/m) and is applied on a surface with no grooves in a coating amount B (g/m), the coating amounts A and B satisfying (1) and (2): 1{'sup': 2', '2, 'claim-text': [{'br': None, 'i': '≦A≦', '38\u2003\u2003(1);'}, {'br': None, 'and'}, {'br': None, 'i': ' Подробнее

Номер записи: 6
13-06-2013 дата публикации

FLUIDISED BED TREATMENT

Номер: US20130149656A1
Автор: CHAN Kin Keung, GOULDING Paul Anthony, HOWE Daniel Jason, JEGATHEESWARAM PILLAI Bhrami
Принадлежит: ROLLS-ROYCE PLC

An apparatus and process is disclosed for the treatment of a component using a fluidised bed of powder. The apparatus includes a treatment chamber for receiving at least a treatment part of the component and a powder reservoir. The powder reservoir has heating or cooling means for controlling the temperature of the powder. A flexible powder conveyor (e.g. educator) links the treatment chamber and the powder reservoir, continuously conveying powder from the reservoir to the treatment chamber for use in the fluidised bed. The powder reservoir and the treatment chamber are independently positionable, so that the position of the treatment chamber is variable with respect to the powder reservoir during operation of the apparatus. 2. An apparatus according to wherein claim 1 , in the powder reservoir claim 1 , the powder is in non-fluidised form.3. An apparatus according to wherein the powder conveying means is provided by a gas stream.4. An apparatus according to wherein the gas stream of the powder conveying means is used in the treatment chamber to generate the fluidised bed.5. An apparatus according to wherein the apparatus allows positioning of the treatment chamber with respect to the component to be treated claim 1 , independently of the position of the powder reservoir.6. An apparatus according to wherein a return powder conveying means links the treatment chamber and the powder reservoir for transporting powder from the fluidised bed back to the powder reservoir.7. An apparatus according to wherein the powder is returned to the powder reservoir for renewed heating/cooling before being conveyed once more to the treatment chamber.8. An apparatus according to wherein the apparatus includes more than one treatment chamber claim 1 , each treatment chamber being for use to treat a different treatment part of the same or different components.9. An apparatus according to wherein at least one treatment part of the component is placed in the fluidised bed and at least one ...

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Номер записи: 7
20-06-2013 дата публикации

METHOD AND DEVICE FOR TREATMENT OF CONTINUOUS OR DISCRETE METAL PRODUCTS

Номер: US20130152650A1
Автор: Eichler Rudiger, Engbom Anders
Принадлежит:

A method for heating an elongated metal product includes heating at a first heating location with at least one burner the metal product, and conveying combustion products from the burner through at least one channel, isolated from the metal product, from the first heating location to at least a second heating location arranged along a conveyor path for the combustion products to impinge upon an opposite surface of the metal product when the metal product passes the second heating location. A device for heating the elongated metal product is also provided. 115-. (canceled)16. A method for heating a metal product , comprising:transporting the metal product along a conveyor path;heating a first surface of the metal product with a flame from at least one burner disposed at a first heating location at the conveyor path;conveying combustion products from the first heating location through at least one channel isolated from the metal product to a second heating location arranged at the conveyor path; andimpinging the combustion products from the at least one channel onto a second surface of the metal product at the second heating location.17. The method of claim 16 , wherein the burner comprises a direct flame impingement burner and the heating to the first surface is at an upper side of the metal product.18. The method of claim 16 , wherein the second heating location is located upstream of the first heating location.19. The method of claim 16 , wherein the conveyor path is perforated and the channel is in communication with the conveyor path claim 16 , and further comprising passing the flame through the conveyor path into the channel.20. The method of claim 19 , wherein the perforated conveyor path comprises a transport surface selected from the group consisting of a mesh belt and walking beams.21. The method of claim 16 , further comprising arranging said at least one channel to provide the combustion products past the metal product on at least one side of the metal ...

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Номер записи: 8
25-07-2013 дата публикации

PLANT AND METHOD FOR PREHEATING BLANKS IN RESPONSE TO HOT FORMING

Номер: US20130189634A1
Автор: Bors Matthias
Принадлежит:

A plant for hot forming blanks includes at least one preheating device, and at least one main heating device arranged downstream from the at least one preheating device. The preheating device includes at least one pre-mixing burner which is selected from a hydrogen-oxygen burner, a fuel gas-oxygen burner and an acetylene burner. A related preheating device and method are also provided. 1. A plant for hot forming blanks , comprising:at least one preheating device including at least one pre-mixing burner selected from the group consisting of a hydrogen-oxygen burner, a fuel gas-oxygen burner and an acetylene burner; andat least one main heating device arranged downstream from the at least one preheating device.2. The plant according to claim 1 , further comprising at least one of a loading device for loading the plant with the blanks and at least one transfer device for transferring the blanks into at least one pressing device.3. The plant according to claim 1 , wherein the at least one main heating device comprises at least one paternoster furnace.4. The plant according claim 1 , wherein the at least one main heating device comprises an austenitization device.5. The plant according to claim 4 , wherein the at least one austenitization device is constructed and arranged to heat the blanks to a temperature of from between 750 to 1050° C.6. A preheating device for a plant for hot forming blanks claim 4 , comprising:at least one premixing burner selected from the group consisting of a hydrogen-oxygen burner, a fuel gas-oxygen burner and an acetylene burner; andat least one main heating device arranged downstream from the premixing burner.7. The preheating device according to claim 6 , wherein the premixing burner is constructed and arranged to preheat the blanks to a temperature of from between 450 to 850° C.8. The preheating device according to claim 6 , wherein the at least one main heating device comprises an austenitization device formed as a structural unit of the ...

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Номер записи: 9
15-08-2013 дата публикации

Rail anchor

Номер: US20130206855A1
Автор: David M. Barry, Luigi Pisano, Timothy John Austin
Принадлежит: Lewis Bolt and Nut Co

Methods, systems, and apparatus, including an apparatus that is a rail anchor comprising a head, a tail, and a belly section. The belly section comprises a top surface, a bottom surface, and two side surfaces. Each side surface comprises a contact-bearing surface area. The head comprises a bend along a length of the head. The tail comprises a notch. Each contact-bearing surface area has a surface area of at least 3 square inches and is adapted to extend at least 1.5 inches downward from the top of a railroad track crosstie along a side of the railroad track crosstie.

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Номер записи: 10
29-08-2013 дата публикации

SURFACE-TREATED STEEL SHEET, METHOD FOR MANUFACTURING THE SAME, AND RESIN-COVERED STEEL SHEET USING THE SAME

Номер: US20130224517A1
Автор: Miyamoto Yuka, Nakamura Norihiko, Suzuki Takeshi, Tobiyama Yoichi
Принадлежит: JFE STEEL CORPORATION

Provided are a Cr-free surface-treated steel sheet that has excellent humid resin adhesion and corrosion resistance and that exhibits no streak-like surface defects, a method for manufacturing such a surface-treated steel sheet, and a resin-covered steel sheet using such a surface-treated steel sheet. A surface-treated steel sheet includes a steel sheet; a corrosion-resistant coating, on at least one side thereof, that is composed of at least one layer selected from a Ni layer, a Sn layer, an Fe—Ni alloy layer, an Fe—Sn alloy layer, and an Fe—Ni—Sn alloy layer; and an adherent coating, on the corrosion-resistant coating, that contains Zr and at least one species selected from P derived from a phosphoric acid and C derived from a phenolic resin in a total mass ratio to Zr of 0.01 to 10. 1. A surface-treated steel sheet comprising a steel sheet; a corrosion-resistant coating , on at least one side thereof , that comprises at least one layer selected from a Ni layer , a Sn layer , an Fe—Ni alloy layer , an Fe—Sn alloy layer , and an Fe—Ni—Sn alloy layer; and an adherent coating , on the corrosion-resistant coating , that contains Zr and at least one species selected from P derived from a phosphoric acid and C derived from a phenolic resin in a total mass ratio to Zr of 0.01 to 10.2. The surface-treated steel sheet according to claim 1 , wherein the coating mass of Zr of the adherent coating is 3 to 200 mg/mper side of the steel sheet.3. A method for manufacturing a surface-treated steel sheet claim 1 , comprising forming a corrosion-resistant coating comprising at least one layer selected from a Ni layer claim 1 , a Sn layer claim 1 , an Fe—Ni alloy layer claim 1 , an Fe—Sn alloy layer claim 1 , and an Fe—Ni—Sn alloy layer on at least one side of a steel sheet; and forming an adherent coating by cathode electrolytic treatment in an aqueous solution containing Zr in a concentration of 0.008 to 0.07 mol/L (L: liter) and at least one species selected from phosphoric acids ...

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Номер записи: 11
09-01-2014 дата публикации

THERMAL TREATED REINFORCING BAR SPLICE AND METHOD

Номер: US20140010590A1
Автор: Most Tobin, Stewart Robert C.
Принадлежит:

A reinforcing bar has a controlled heating on its threaded end (or other engagement portion for engaging a coupler), which extends beyond the threads, and provides improved mechanical properties at the end. The heating may be a controlled heating that case hardens the threaded end, including heating of an unthreaded portion beyond the threaded portion. The heating may be done in multiple steps, for example with a heating/hardening, follow by cooling, a reheating for tempering, and a recooling. The bar end may be threaded into a coupler or splice, with the heated end extending axially beyond (outside of) the coupler. Regions of the reinforcing bar beyond the heated end may be untreated, and therefore weaker than the thermally-treated bar end. The resulting coupling or splice may therefore be able to achieve bar break (failure at a location in the bulk of the bar, away from the coupler). 1. A method of preparing a reinforcing bar , the method comprising:preparing an engagement portion of the reinforcing bar for mechanically engagement with a coupler to be mechanically coupled to the engagement portion;subsequent to the preparing, heating a heated end of the reinforcing bar, wherein the heated end extends beyond the engagement portion, and wherein a bulk of the reinforcing bar beyond the heated end is left unheated by the heating; andsubsequent to the heating, cooling the heated end.2. The method of claim 1 , wherein the heating includes induction heating the heated end claim 1 , using a heater that surrounds at least part of the heated end.3. The method of claim 1 , wherein the heating includes case hardening of the heated end claim 1 , such that an outer part of the heated end is harder than an internal core of the heated end claim 1 , which remains ductile.4. The method of claim 1 , wherein the heating makes the heated end stronger than the bulk of the reinforcing bar.5. The method of claim 1 , wherein the heating includes heating such that the heated end has an ...

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Номер записи: 12
13-02-2014 дата публикации

Method for heating a shaped component for a subsequent press hardening operation and continuous furnace for regionally heating a shaped component preheated to a predetermined temperature to a higher temperature

Номер: US20140045130A1
Автор: Ebner Fritz Josef, Ebner Robert, Eckertsberger Gerald, Morbitzer Eduard
Принадлежит: EBNER INDUSTRIEOFENBAU GMBH

A method for heating a shaped component () for a subsequent press hardening operation is described, wherein the shaped component () is firstly heated to a predefined temperature and subsequently regionally heated to a higher temperature by means of heating elements (), which are drivable independently of one another, of a heating element panel (). In order to ensure an advantageous temperature profile, it is proposed that the shaped component () be heated during its conveyance through the heating element panel () with the aid of the heating elements (), which are arranged with respect to the conveyance direction () in longitudinal and transverse rows ( and ) and are drivable at least in groups using differing heating power. 1227102107389. A method for heating a shaped component () for a subsequent press hardening operation , wherein the shaped component () is firstly heated to a predefined temperature and subsequently regionally heated to a higher temperature by means of heating elements () , which are drivable independently of one another , of a heating element panel () , wherein the shaped component () is heated during its conveyance through the heating element panel () with the aid of the heating elements () , which are arranged with respect to the conveyance direction () in longitudinal and transverse rows ( and ) and are drivable at least in groups using differing heating power.2231587. The method according to claim 1 , wherein the shaped component () can be cooled in strips in the conveyance direction () via optionally drivable cooling units () claim 1 , which are assigned to the longitudinal rows () of the heating elements ().3121114210117789311. A continuous furnace () for the regional heating of a shaped component () preheated to a predefined temperature to a higher temperature claim 1 , having a conveyor () penetrating a furnace housing () for the shaped component () and having a heating element panel () claim 1 , which is assigned to the conveyor () claim ...

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Номер записи: 13
13-03-2014 дата публикации

Fe-BASED METAL SHEET AND MANUFACTURING METHOD THEREOF

Номер: US20140069555A1
Автор: Inaguma Tooru, Mizuhara Youji, Sakamoto Hiroaki, Tomita Miho
Принадлежит: NIPPON STEEL & SUMITOMO METAL CORPORATION

A cast slab containing C: less than 0.02 mass % and made of an Fe-based metal of an α-γ transforming component is subjected to hot rolling at a temperature of an A3 point or higher and is subjected to α-region rolling at a temperature of 300° C. or higher and lower than the A3 point, and thereby a base metal sheet having a {100} texture in a surface layer portion is fabricated. Then, by performing a heat treatment under predetermined conditions, an Fe-based metal sheet is obtained in which a Z value is not less than 2.0 nor more than 200 when intensity ratios of respective {001}<470>, {116}<6 12 1>, and {223}<692> directions in a sheet plane by X-ray diffraction are set to A, B, and C respectively and Z=(A+0.97B)/0.98C is satisfied. 1. An Fe-based metal sheet , comprising: at least one type of ferrite-forming element except Fe , whereinwhen intensity ratios of respective {001}<470>, {116}<6 12 1>, and {223}<692> directions in a sheet plane by X-ray diffraction are set to A, B, and C respectively and Z=(A+0.97B)/0.98C is satisfied, a Z value is not less than 2.0 nor more than 200.2. The Fe-based metal sheet according to claim 1 , whereinsaid ferrite-forming element diffuses from a surface to be alloyed with Fe.3. The Fe-based metal sheet according to claim 1 , whereina layer containing said ferrite-forming element is formed on at least one side of surfaces of the Fe-based metal sheet, and said ferrite-forming element that has diffused from part of the layer is alloyed with Fe.4. The Fe-based metal sheet according to claim 3 , whereina thickness of the layer containing said ferrite-forming element is not less than 0.01 μm nor more than 500 μm.5. The Fe-based metal sheet according to claim 1 , whereinan accumulation degree of {200} planes is not less than 30% nor more than 99%, and an accumulation degree of {222} planes is not less than 0.01% nor more than 30%.6. The Fe-based metal sheet according to claim 1 , whereinsaid ferrite-forming element is one type of element ...

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Номер записи: 14
03-01-2019 дата публикации

A method of heat transfer between a metallic or non-metallic item and a heat transfer fluid

Номер: US20190002749A1
Автор: David NORIEGA PEREZ
Принадлежит: ArcelorMittal SA

A method of heat transfer between a metallic or non-metallic item and a heat transfer fluid is provided. The method includes a fluid medium and nanoparticles. A thickness/lateral size ratio of the nanoparticles is below 0.00044. The nanoparticles do not include carbon nanotubes.

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Номер записи: 15
07-01-2021 дата публикации

HEAT-TREATMENT OIL COMPOSITION

Номер: US20210002574A1
Автор: HOMMA Rikki
Принадлежит: IDEMITSU KOSAN CO.,LTD.

Provided is a heat-treatment oil composition that makes it possible to suppress quenching distortion and distortion variation and to achieve improved quenching hardness. A heat-treatment oil composition that includes a base oil (A) and a vapor film rupturing agent (B). The heat-treatment oil composition makes it such that, on a cooling curve obtained in accordance with the cooling performance test method in HS K2242:2012, the time in seconds to 300° C., e.g., the cooling time from 800° C. to 300° C., is at least 6.5 seconds but less than 10 seconds. Component (B) includes a petroleum resin. 1. A heat-treatment oil composition , comprising:a base oil; anda vapor film rupturing agent comprising a petroleum resin,wherein, on a cooling curve obtained in accordance with a cooling performance test method of JIS K2242:2012, a number of seconds to 300° C., which is a cooling time from 800° C. to 300° C., is 6.5 seconds or more but less than 10 seconds.2. The heat-treatment oil composition according to claim 1 , wherein a characteristic number of seconds obtained from the cooling curve is 1 second or more.3. The heat-treatment oil composition according to claim 1 , further comprising:a metal-based detergent dispersant.4. The heat-treatment oil composition according to claim 3 , wherein metal-based detergent dispersant is present in a range of from 0.01 to 10% by mass based on a total amount of the composition.5. The heat-treatment oil composition according to claim 1 , wherein the characteristic number of seconds obtained from the cooling curve is 2.5 seconds or less.6. The heat-treatment oil composition according to claim 1 , wherein the petroleum resin has a softening point of from 40 to 150° C.7. The heat-treatment oil composition according to claim 1 , wherein the petroleum resin has a number-average molecular weight (Mn) of from 200 to 5 claim 1 ,000.8. The heat-treatment oil composition according to claim 1 , wherein the petroleum resin is a resin obtained by ...

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Номер записи: 16
03-01-2019 дата публикации

OIL-IMMERSION QUENCHING COOLING PRECURSOR AND OIL-IMMERSION QUENCHING COOLING METHOD

Номер: US20190003001A1
Автор: GE Shengdong, HAO Xuezhi, WANG Shui, ZHANG Kejian
Принадлежит:

An oil-immersion quenching cooling precursor and an oil-immersion quenching cooling method includes an axle-type workpiece or a workpiece that has sections in an axle form. Several separation rings are arranged on the workpiece in the axial direction to separate the axle-type workpiece or the workpiece that has sections in an axle form into a plurality of sections before oil-immersion quenching cooling. In the method, there is a cutting procedure before a quenching cooling procedure. Several separation rings distributed in the axial direction are reserved outside a dimension required for the workpiece. sections before oil-immersion quenching cooling. In the method, there is a cutting procedure before a quenching cooling procedure. Several separation rings distributed in the axial direction are reserved outside a dimension required for the workpiece. 1. An oil-immersion quenching cooling precursor of a workpiece that is of an axle type or has sections in an axle form , formed by arranging several separation rings on the axle-type workpiece or workpiece that has sections in an axle form in the axial direction to separate the workpiece into a plurality of sections , wherein , the workpiece is separated into a plurality of sections to expel gas bubbles.2. The oil-immersion quenching cooling precursor according to claim 1 , wherein claim 1 , the separation rings are distributed on an axial surface of the workpiece.3. The oil-immersion quenching cooling precursor according to claim 1 , wherein claim 1 , the separation rings are machined out integrally with the axle-type workpiece.4. The oil-immersion quenching cooling precursor according to claim 1 , wherein claim 1 , at least one separation ring is arranged on the workpiece.5. The oil-immersion quenching cooling precursor according to claim 1 , wherein claim 1 , the longitudinal cross section of the separation ring is in a rectangular shape claim 1 , sloped shape claim 1 , stepped shape claim 1 , triangular shape claim 1 ...

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Номер записи: 17
08-01-2015 дата публикации

GRAIN-ORIENTED ELECTRICAL STEEL SHEET

Номер: US20150010762A1
Автор: Inoue Hirotaka, Okabe Seiji, Suehiro Ryuichi, Yamaguchi Hiroi
Принадлежит:

Provided is a grain-oriented electrical steel sheet, with reduced iron loss by magnetic domain refining treatment, exhibiting an excellent noise property and effectively reducing noise generated when stacked in an iron core of a transformer. In a grain-oriented electrical steel sheet including a forsterite film and a tension coating on both surfaces, magnetic domain refining treatment has been performed to apply linear thermal strain to the grain-oriented electrical steel sheet, the magnitude of deflection in the rolling direction of the steel sheet is 600 mm or more and 6000 mm or less as the curvature radius of the deflected surface with the surface having the strain applied thereto being the inner side, and the magnitude of deflection in the direction orthogonal to the rolling direction is 2000 mm or more as the curvature radius of the deflected surface with the surface having the strain applied thereto being the inner side. 1. A grain-oriented electrical steel sheet comprising a forsterite film and a tension coating on both surfaces of the steel sheet , wherein magnetic domain refining treatment has been performed to apply linear thermal strain to the grain-oriented electrical steel sheet , a magnitude of deflection in a rolling direction of the steel sheet is 600 mm or more and 6000 mm or less as a curvature radius of a deflected surface with a surface having the thermal strain applied thereto being an inner side , and a magnitude of deflection in a direction orthogonal to the rolling direction is 2000 mm or more as the curvature radius of the deflected surface with the surface having the strain applied thereto being the inner side.2. The grain-oriented electrical steel sheet according to claim 1 , wherein before the magnetic domain refining treatment is performed claim 1 , a combined film tension of the forsterite film and the tension coating is equivalent on both surfaces of the steel sheet claim 1 , and a magnitude of deflection when the forsterite film and ...

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Номер записи: 18
11-01-2018 дата публикации

VAPOR FILM-RUPTURING AGENT, AND THERMAL TREATMENT OIL COMPOSITION

Номер: US20180010203A1
Автор: Hattori Hideaki, Yomogita Akinori, Yoshida Yukio
Принадлежит: IDEMITSU KOSAN CO., LTD.

A vapor film-rupturing agent is provided that is prepared from asphalt as a staring material, so as to have a fraction (x) (% by mass) of a saturated component and a fraction (y) (% by mass) of an asphaltene component based on the total fraction 100% by mass of the saturated component, the asphaltene component, an aromatic component, and a resin component obtained by any one of analysis methods described in the Japan Petroleum Institute Standard and Manuals Testing Method for Petroleum Products JPI-5S-70-10 and the British Standard Test Method IP-469 that satisfy one or more of the following conditions (1) to (3): condition (1): 1.2926×(x)/100−8.113×(y)/100+2.3384≦2.400, condition (2): (y) ≧7.0, and condition (3): ((y)/(x)) ≧0.5. The vapor film-rupturing agent is capable of preparing a thermal treatment oil composition having a high vapor film-rupturing effect with a characteristic number of seconds in the cooling capability test according to JIS K2242 (2012) of 2.50 seconds or less. 1. A vapor film-rupturing agent that is prepared from asphalt as a staring material , the vapor film-rupturing agent comprising at least one of a fraction (x) (% by mass) of a saturated component and a fraction (y) (% by mass) of an asphaltene component based on the total fraction 100% by mass of the saturated component ,wherein the asphaltene component, an aromatic component, and a resin component are obtained by any one of analysis methods described in the Japan Petroleum Institute Standard and Manuals Testing Method for Petroleum Products JPI-5S-70-10 and the British Standard Test Method IP-469 that satisfies one or more of the following conditions (1) to (3): [{'br': None, 'Calculation expression (I), {'br': None, 'T=1.2926×x/100−8.113×y/100+2.3384;'}, {'br': None, 'condition (2): the fraction (y) of the asphaltene component is 7.0% by mass or more; and'}, {'br': None, 'condition (3): a ratio ((y)/(x)) of the fraction (y) of the asphaltene component and the fraction (x) of the ...

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Номер записи: 19
14-01-2021 дата публикации

HEAT-TREATMENT OIL COMPOSITION

Номер: US20210009917A1
Автор: HOMMA Rikki
Принадлежит: IDEMITSU KOSAN CO.,LTD.

A heat-treatment oil composition can make it possible to achieve both high quenching hardness and reduced quenching distortion. A heat-treatment oil composition may include a base oil (A) and a vapor film rupturing agent (B). The heat-treatment oil composition may make it such that, on a cooling curve obtained in accordance with the cooling performance test method in JIS K2242:2012, the time in seconds to 300° C., e.g., the cooling time from 800 to 300° C., is less than 6 seconds. Component (B) may include a petroleum resin. 1. A heat-treatment oil composition , comprising:a base oil (A); anda vapor film rupturing agent (B) comprising a petroleum resin,wherein, on a cooling curve obtained in accordance with a cooling performance test method of JIS K2242:2012, a number of seconds to 300° C., which is a cooling time from 800° C. to 300° C., is less than 6 seconds.2. The composition of claim 1 , wherein a characteristic number of seconds obtained from the cooling curve is 1 second or more.3. The composition of claim 1 , wherein a characteristic number of seconds obtained from the cooling curve is 2.5 seconds or less.4. The composition of claim 1 , wherein the petroleum resin has a softening point of 40 to 150° C.5. The composition of claim 1 , wherein the petroleum resin has a number-average molecular weight (Mn) of 200 to 5 claim 1 ,000.6. The composition of claim 1 , wherein the petroleum resin is a resin obtained by polymerizing or copolymerizing at least one unsaturated compound selected from an aliphatic olefin comprising 4 to 10 carbon atoms claim 1 , an aliphatic diolefin claim 1 , and an aromatic compound comprising an olefinic unsaturated bond and 8 or more carbon atoms.7. The composition of claim 1 , wherein the petroleum resin is at least one selected from an aliphatic petroleum resin claim 1 , an aromatic petroleum resin claim 1 , an aliphatic-aromatic copolymerization-based petroleum resin claim 1 , a dicyclopentadiene-based petroleum resin claim 1 , a ...

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Номер записи: 20
09-01-2020 дата публикации

GRAIN-ORIENTED ELECTRICAL STEEL SHEET

Номер: US20200010917A1
Автор: Takamiya Toshito, TERASHIMA Takashi, UMADA Takumi, Watanabe Makoto
Принадлежит: JFE STEEL CORPORATION

In a grain-oriented electrical steel sheet, comprising magnetic domains refined by a plurality of linear grooves in a surface of a steel sheet, each of the linear grooves is provided on its floor with a plurality of recessed parts aligned in a direction in which the linear groove extends, at a predetermined interval p (μm), and the recessed part is made to have a predetermined depth d (μm). In this way, it is possible to provide a grain-oriented electrical steel sheet having further improved iron loss properties while having reduced magnetic flux density reduction. 3. The grain-oriented electrical steel sheet according to claim 1 , wherein the direction in which the linear groove extends forms an angle of 0° or more and 40° or less with a direction orthogonal to a rolling direction of the steel sheet.5. The grain-oriented electrical steel sheet according to claim 1 , wherein the opening width W of the linear groove is 5 μm or more and 150 μm or less.6. The grain-oriented electrical steel sheet according to claim 2 , wherein the direction in which the linear groove extends forms an angle of 0° or more and 40° or less with a direction orthogonal to a rolling direction of the steel sheet.8. The grain-oriented electrical steel sheet according to claim 2 , wherein the opening width W of the linear groove is 5 μm or more and 150 μm or less.10. The grain-oriented electrical steel sheet according to claim 3 , wherein the opening width W of the linear groove is 5 μm or more and 150 μm or less.11. The grain-oriented electrical steel sheet according to claim 4 , wherein the opening width W of the linear groove is 5 μm or more and 150 μm or less.13. The grain-oriented electrical steel sheet according to claim 6 , wherein the opening width W of the linear groove is 5 μm or more and 150 μm or less.14. The grain-oriented electrical steel sheet according to claim 7 , wherein the opening width W of the linear groove is 5 μm or more and 150 μm or less.15. The grain-oriented ...

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Номер записи: 21
15-01-2015 дата публикации

HEAT TREATING OIL COMPOSITION

Номер: US20150013843A1
Автор: ICHITANI Katsumi, Kato Masayuki, Kobessho Masahiro, NOGUCHI Kenro, Takasaki Norihiro, Yamada Masahiro
Принадлежит: IDEMITSU KOSAN CO., LTD.

A heat-treatment oil composition contains (A) a first base oil with a kinematic viscosity at 40 degrees C. in a range of 5 mm/s to 60 mm/s in an amount of 50 mass % to 95 mass % of a total amount of the composition, (B) a second base oil with a kinematic viscosity at 40 degrees C. of 300 mm/s or more in an amount of 5 mass % to 50 mass %, and (C) an alpha-olefin copolymer. The heat-treatment oil composition according to the invention can reduce distortion unevenness and hardness unevenness accompanying mass-quenching. 1. A heat-treatment oil composition comprising:{'sup': 2', '2, '(A) a first base oil with a kinematic viscosity at 40° C. in a range of 5 mm/s to 60 mm/s in an amount of 50 mass % to 95 mass % of a total amount of the composition;'}{'sup': '2', '(B) a second base oil with a kinematic viscosity at 40° C. of 300 mm/s or more in an amount of 5 mass % to 50 mass %; and'}(C) an alpha-olefin copolymer.2. The heat-treatment oil composition according to claim 1 , wherein the alpha-olefin copolymer comprises an ethylene-alpha-olefin copolymer.3. The heat-treatment oil composition according to claim 1 , wherein alpha-olefin copolymer is in a range of 0.1 mass % to 30 mass % of the total amount of the composition.4. The heat-treatment oil composition according to claim 1 , wherein composition has a characteristic time of one second or less according to a cooling performance test of JIS K 2242 and has a maximum cooling rate of 400° C./s or less at a boiling stage is.5. The heat-treatment oil composition according to claim 1 , wherein the composition has a 300° C.—reached time of from 8 seconds to 12 seconds according to a cooling performance test of JIS K 2242. The present invention relates to a heat-treatment oil composition used for, for instance, quenching a metal material.In order to improve the properties of a metal material such as steel, the metal material is often subjected to a heat treatment such as quenching, tempering, annealing and normalizing. In the ...

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Номер записи: 22
15-01-2015 дата публикации

GRAIN-ORIENTED ELECTRICAL STEEL SHEET

Номер: US20150013849A1
Автор: Kawano Takashi, Okabe Seiji, Takajo Shigehiro
Принадлежит:

A grain-oriented electrical steel sheet produces reduced noise when worked into a transformer, by setting length d of each plastic strain region in the widthwise direction of the steel sheet to 0.05 mm or more and 0.4 mm or less, and a ratio (Σd/Σw) of a total Σd of the length d to a total Σw of application interval w of each of the above plastic strain regions to 0.2 or more and 0.6 or less. 1. A grain-oriented electrical steel sheet to which plastic strain regions are applied in a dot-sequence manner in a widthwise direction of the steel sheet by magnetic domain refining treatment , whereina length d of each of the plastic strain regions in the widthwise direction of the steel sheet is 0.05 mm or more and 0.4 mm or less, anda ratio (Σd/Σw) of a total Σd of the length d to a total Σw of an application interval w of each of the plastic strain regions is 0.2 or more and 0.6 or less.2. The grain-oriented electrical steel sheet according to claim 1 , wherein a ratio (d/w) of the length d of each of the plastic strain regions to the application interval w corresponding to the length d of each of the plastic strain regions is 0.2 or more and 0.6 or less.3. The grain-oriented electrical steel sheet according to claim 1 , wherein the plastic strain regions are formed by electron beam irradiation.4. The grain-oriented electrical steel sheet according to claim 2 , wherein the plastic strain regions are formed by electron beam irradiation. This disclosure relates to a grain-oriented electrical steel sheet utilized for an iron core material of a transformer or the like.In recent years, energy use has become more and more efficient, and demands are increasingly being made, mainly from transformer manufacturers and the like, for an electrical steel sheet with high flux density and low iron loss.Flux density can be improved by according crystal orientations of the electrical steel sheet with the Goss orientation.With regards to iron loss reduction, measures have been devised from ...

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Номер записи: 23
21-01-2016 дата публикации

CONTINUOUS HEATING FURNACE

Номер: US20160018161A1
Автор: Satoh Kimiyoshi
Принадлежит:

A continuous heating furnace includes a furnace main body, a conveyance unit configured to convey a baking object W in the furnace main body, a plurality of heating sections heated by combustion, each having a first radiation surface configured to be heated by combustion and transfers heat to the baking object conveyed by the conveyance unit and arranged in the conveyance direction of the baking object in the furnace main body, and a cooling preheater having a second radiation surface configured to receive radiant heat from the baking object when being opposite to the baking object conveyed by the conveyance unit and a gas flow path configured to preheat a gas used for combustion in the heating section by the heat from the second radiation surface. 1. A continuous heating furnace comprising:a furnace main body;a conveyance unit configured to convey a baking object in the furnace main body;a plurality of heating sections heated by combustion, each having a first radiation surface configured to be heated by combustion and transfers radiant heat to the baking object conveyed by the conveyance unit, and arranged in a conveyance direction of the baking object in the furnace main body; anda cooling preheater having a second radiation surface configured to receive radiant heat from the baking object when being opposite to the baking object conveyed by the conveyance unit, and a gas flow path configured to preheat a gas used for combustion in the heating section by heat from the second radiation surface.2. The continuous heating furnace according to claim 1 , wherein the first radiation surface and the second radiation surface are disposed to adjoin in the conveyance direction of the baking object claim 1 , and further comprising shielding sections positioned between the first radiation surface and the second radiation surface in the conveyance direction claim 1 , extending closer to the baking object than the first radiation surface and the second radiation surface in a ...

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Номер записи: 24
17-01-2019 дата публикации

METHOD OF HEAT TREATING A FASTENING MEMBER

Номер: US20190017141A1
Автор: Liu Tianjun
Принадлежит: CATERPILLAR INC.

A method of heat treating a fastening member having a head portion, a shank portion, and a thread portion includes hardening the fastening member to a first hardness value. Hardening of the fastening member includes heating the fastening member at a first pre-set temperature value. The method also includes tempering the fastening member at a second pre-set temperature value to a second hardness value. The method further includes induction tempering the thread portion of the fastening member. Induction tempering of the thread portion includes heating the thread portion at a third pre-set temperature value to a third hardness value. The third hardness value of the thread portion is less than the second hardness value of the head portion and the shank portion. 1. A method of heat treating a fastening member , the fastening member including a head portion , a shank portion , and a thread portion , the method comprising:hardening the fastening member to a first hardness value, wherein hardening of the fastening member includes heating the fastening member at a first pre-set temperature value;tempering the fastening member at a second pre-set temperature value to a second hardness value; andinduction tempering the thread portion of the fastening member, wherein induction tempering of the thread portion includes heating the thread portion at a third pre-set temperature value to a third hardness value, wherein the third hardness value of the thread portion is less than the second hardness value of the head portion and the shank portion.2. The method of further including quenching the fastening member using a fluid medium upon heating the fastening member at the first pre-set temperature value claim 1 , wherein the fluid medium is selected based on a material of the fastening member.3. The method of claim 1 , wherein the first pre-set temperature value lies between 800° C. and 950° C.4. The method of claim 1 , wherein the first pre-set temperature value lies is an ...

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Номер записи: 25
17-01-2019 дата публикации

Drawn planetary pin assembly

Номер: US20190017589A1
Автор: Cole A. HUME, Giovanni DIMATTEO, Joseph C. Woods, Jr., Yoshitaka Waseda
Принадлежит: Koyo Bearings North America LLC

A pin assembly for use in a planetary gear including a pin including a cylindrical side wall defining a central bore that extends from a first end to a second end of the pin along its longitudinal center axis, an inlet bore, and a first annular groove that extends radially outwardly into the side wall of the pin adjacent the first end. A first cylindrical plate includes a first side wall, a second side wall, and a cylindrical outer wall extending therebetween, the first plate being disposed within the first annular groove of the pin, wherein a width of the first plate in a direction parallel to the longitudinal center axis is less than a width of the first annular groove in the direction parallel to the longitudinal center axis so that the first plate is axially slidable within the first annular groove.

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Номер записи: 26
28-01-2016 дата публикации

SUB-ZERO TREATMENT DEVICE

Номер: US20160024606A1
Автор: Mori Kosuke, OHTA Hidetoshi, YONEKURA Masahiro
Принадлежит: TAIYO NIPPON SANSO CORPORATION

The present invention provides a sub-zero treatment device capable of uniformly cooling a cooling target object and reducing the amount of liquid refrigerant used for cooling the cooling target object. The sub-zero treatment device has an exhaust member extending from a through-hole provided in a cooling tank constituting a cooling target object mounting chamber through to the interior of the cooling target object mounting chamber, and having an exhaust port, wherein the exhaust port is disposed in an exhaust port positioning space, which is the space located in the upper half of the cooling target object mounting chamber and having a width in the transverse direction that is equal to the maximum width in the transverse direction of the suction port. 1. A sub-zero treatment device comprising:a cooling tank composed of a cooling tank main body formed from a base plate and first to fourth side walls, and a lid, the cooling tank having a cooling target object mounting chamber in which a cooling target object is mounted, and a fan housing chamber that is connected to the cooling target object mounting chamber,a baffle member, disposed inside the cooling tank so as to separate the cooling target object mounting chamber and the fan housing chamber, and having a suction port for guiding an atmosphere of the cooling target object mounting chamber into the fan housing chamber, and blowout ports for guiding an atmosphere of the fan housing chamber into the cooling target object mounting chamber,an agitation fan housed in the fan housing chamber in a position opposing the suction port, the agitation fan converting a liquid refrigerant supplied to the fan housing chamber into a mist or a low-temperature gas, as well as agitating an atmosphere inside the cooling tank, andan exhaust member, extending from a through-hole provided in the cooling tank main body through to an interior of the cooling target object mounting chamber, and having an exhaust port, whereinthe first to ...

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Номер записи: 27
28-01-2016 дата публикации

System and Method for Producing a Hardened and Tempered Structural Member

Номер: US20160024607A1
Автор: Schooley William, Work Matthew
Принадлежит:

System and methods relating to in-line heat-treating, hardening and tempering of material, such as for example, coiled steel into a roll-formed, hardened and tempered structural member having uniform or different targeted properties in selected zones of the structural member. The different targeted properties may be achieved by heating and/or cooling the material subject to certain parameters. 1. A method for producing a hardened and tempered structural member comprising the steps of:providing a continuous ferrous work piece;roll forming said ferrous work piece into a profiled work piece of a selected profile;first rapidly heating said profiled work piece in an induction heating device above a first temperature at which a first metallurgical phase is produced substantially throughout said profiled work piece;first rapidly cooling said profiled work piece at a first cooling rate from about said first temperature to a second temperature to convert said first metallurgical phase to a second metallurgical phase substantially throughout said profiled work piece resulting in a hardened work piece having said selected profile;second rapidly heating said hardened work piece in a second induction heating device to a third temperature to temper said hardened work piece and produce a hardened and tempered work piece having said selected profile having a desired hardness; andsecond rapidly cooling said hardened and tempered work piece at a second cooling rate to a fourth temperature.2. The method of wherein said first temperature is in the range of about 800 degrees C. to 1000 degrees C. claim 1 , wherein said first metallurgical phase is austenite.3. The method of wherein said second temperature is in the range of about 20-200 degrees C. claim 2 , and wherein said first rapid cooling occurs in about 10 seconds or less claim 2 , and said second metallurgical phase is martensite.4. The method of wherein said third temperature is at least about 450 degrees C.5. The method of ...

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Номер записи: 28
28-01-2016 дата публикации

PROCESSING OF HOT STAMPED PARTS

Номер: US20160024608A1
Автор: SINGH Jaswinder Pal
Принадлежит:

A method of manufacturing a steel part including hot stamping followed by trimming, piercing, or flanging, without delayed fracture and without the need for annealing, is provided. The method includes heating a blank formed of a steel material, forming the blank between a pair of dies, and quenching the blank. The temperature drop in select areas of the blank is reduced, which limits the amount of martensite formed in the select areas, but allows martensite to form in other areas. The dies can be formed with modified materials or modified cooling channels to limit the amount of martensite formed in the select areas of the blank. The select areas are softer than the other areas and can be subsequently trimmed, pierced, or flanged without the delayed fractures. 1. A method of forming a part , comprising the steps of:providing a blank formed of a steel material;heating the blank to a predetermined temperature;forming the heated blank to a predetermined geometry;the forming step including quenching the blank to form martensite in the blank;the quenching step including limiting the amount of martensite formed in at least one select area of the blank; andat least one of cutting and deforming the at least one select area of the blank.2. The method of wherein the quenching step includes forming martensite in other areas of the blank adjacent the at least one select area claim 1 , and forming less martensite in the at least one select area than the other areas of the blank.3. The method of wherein the at least one of cutting and deforming step includes at least one of trimming claim 1 , piercing claim 1 , and flanging the at least one select area.4. The method of wherein the predetermined temperature of the heating step is at least 900° C. and the forming step includes stamping the heated blank in a stamping apparatus.5. The method of wherein the quenching step includes cooling the at least one select area of the blank at a slower rate than other areas of the blank adjacent ...

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Номер записи: 29
25-01-2018 дата публикации

HEAT TREATMENT OIL COMPOSITION

Номер: US20180023021A1
Автор: Hattori Hideaki, ICHITANI Katsumi
Принадлежит: IDEMITSU KOSAN CO., LTD

A heat treatment oil composition is provided that is capable of reducing the fluctuation in cooling capability among components subjected to mass quenching while retaining a cooling capability equivalent to the No. 1 oil of Class 2 of JIS K2242:2012 in a heat treatment of a metal material, such as quenching, and is capable of suppressing deterioration in cooling capability thereof with the lapse of time under repetition of the heat treatment. The heat treatment oil composition contains (A) a base oil and (B) at least one selected from a petroleum resin and/or a derivative of a petroleum resin, and has a characteristic time obtained from a cooling curve obtained according to the cooling capability test method of JIS K2242:2012 of 1.00 second or less and a 300° C. number of second, which is a cooling time from 800° C. to 300° C. in the cooling curve, of 6.00 seconds or more and 14.50 seconds or less. 1. A heat treatment oil composition , comprising:(A) a base oil; and(B) at least one selected from the group consisting of a petroleum resin, a derivative of a petroleum resin, and a mixture thereof,wherein the heat treatment oil composition has a characteristic time obtained from a cooling curve obtained according to the cooling capability test method of JIS K2242:2012 of 1.00 second or less, and a 300° C. number of second, which is a cooling time from 800° C. to 300° C. in the cooling curve, of 6.00 seconds or more and 14.50 seconds or less.2. The heat treatment oil composition according to claim 1 , wherein the petroleum resin claim 1 , the derivative of a petroleum resin claim 1 , or both claim 1 , has a softening point measured by the ring and ball method of JIS K2207:2006 of 40° C. or more.3. The heat treatment oil composition according to claim 2 , wherein the petroleum resin claim 2 , the derivative of a petroleum resin claim 2 , or both claim 2 , has a softening point measured by the ring and ball method of JIS K2207:2006 of 60° C. or more and 150° C. or less.4. ...

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Номер записи: 30
25-01-2018 дата публикации

HEAT TREATMENT OIL COMPOSITION

Номер: US20180023022A1
Автор: Hattori Hideaki, ICHITANI Katsumi
Принадлежит: IDEMITSU KOSAN CO., LTD.

A heat treatment oil composition is provided that suppresses the decrease of luster in a heat treatment of a metal material, and is capable of suppressing the increase of the number of second (characteristic number of second) until reaching the temperature where the vapor blanket stage ends with the lapse of time and the decrease of the kinetic viscosity with the lapse of time. The heat treatment oil composition contains (A) a base oil and (B) a vapor blanket breaking agent selected from one or more of a petroleum resin, a terpene resin, rosin, and derivatives thereof. 1. A heat treatment oil composition , comprising(A) a base oil, and(B) at least one vapor blanket breaking agent selected from the group consisting of a petroleum resin, a terpene resin, a rosin, and derivatives thereof.2. The heat treatment oil composition according to claim 1 , wherein the vapor blanket breaking agent as the component (B) has a softening point measured by the ring and ball method of JIS K2207:2006 of 40° C. or more.3. The heat treatment oil composition according to claim 2 , wherein the vapor blanket breaking agent as the component (B) has a softening point measured by the ring and ball method of JIS K2207:2006 of 60° C. or more and 150° C. or less.4. The heat treatment oil composition according to claim 1 , wherein the base oil as the component (A) has a 40° C. kinetic viscosity of from 5 to 500 mm/s.5. The heat treatment oil composition according to claim 1 , comprising:80% by mass or more and less than 100% by mass of the base oil, andmore than 0% by mass and 20% by mass or less of the vapor blanket breaking agent,based on a total mass the total amount of the heat treatment oil composition.6. The heat treatment oil composition according to claim 1 , wherein the heat treatment oil composition has a characteristic number of second obtained from a cooling curve obtained according to the cooling capability test method of JIS K2242:2012 of 3.00 seconds or less. The present invention ...

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Номер записи: 31
10-02-2022 дата публикации

METHOD AND APPARATUS FOR COOLING A TOOL

Номер: US20220042138A1
Автор: FLESCH Volker, MULLER Bjoern, MULLER Patrick, WINDERLICH Maik, WISNIA Thorsten
Принадлежит:

The invention relates to a method for cooling a tool in a heat treatment furnace, wherein: the tool is supplied during normal cooling operation with coolant from a coolant reservoir through a supply inlet (), which coolant is returned into the coolant reservoir from the tool via a return flow (); the supply inlet () is coupled by means of an electric actuator () alternatively to the coolant reservoir or to the public water supply and the return flow () is coupled by means of a further electric actuator () alternatively to the coolant reservoir or to the public waste water system (); the actuators (′) are supplied with a feed current during normal cooling operation and held in a first position in which coolant is supplied to the tool through the supply inlet () from the coolant reservoir and the coolant is fed back through the return flow () into the coolant reservoir; and, upon interruption in the power supply, the actuators (′) are forced into an emergency position in which cold water is supplied to the tool through the supply inlet () from the public water supply and the water is discharged through the return flow () into the public waste water system (). 1. A method of cooling a tool in a heat-treatment furnace , the method comprising the step of:providing an electrical control valve by which a feed of the tool is connectable either to an output line of a with coolant supply or to a municipal water system;providing another electrical control valve by which a return of the tool is connectable either with an intake line of the coolant supply or to a municipal sewage system;during normal cooling operation setting the control valves with electricity into and holding them electrically in a first position in which coolant is fed from the output line of the coolant to the tool and therefrom feeding the coolant via the return back to the coolant supply; and,on interruption of electric supply to the control valves, automatically returning the control valves into an ...

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Номер записи: 32
23-01-2020 дата публикации

METHOD OF COLORIZING STAINLESS STEEL USING STRIP ANNEAL PROCESSING

Номер: US20200024747A1
Автор: Myers Frederick A., Price LeRoy R.
Принадлежит:

A method of colorizing stainless steel strip involves the continuous surface treatment of stainless steel strip with aqueous suspensions of rare earth oxide nano or micro particles or aqueous rare earth nitrate solutions of nano or micro particles. The surface treatment can be applied by roll coating, spraying or other conventional application techniques. The coated strip is then continuously annealed. The surface treatment can provide a variety of colors. It also improves corrosion resistance of the processed stainless steel strip. Steel strip treated in this manner is suitable for a variety of applications in the building systems, automotive and appliance markets. 1. A process for colorizing the surface of stainless steel strip comprising:coating said stainless steel strip on at least one of the said sides with at least one of an aqueous suspension comprising a rare earth oxide or an aqueous solution comprising a rare earth nitrate;continuously annealing said coated stainless steel strip.2. The process of claim 1 , wherein the rare earth oxide comprises nanoparticles.3. The process of claim 1 , wherein the rare earth oxide comprises microparticles.4. The process of claim 1 , wherein the continuous anneal process is performed in a dry atmosphere with a dewpoint of less than about 0° F.5. The process of claim 4 , wherein the dewpoint is less than about −40° F.6. The process of claim 1 , wherein the continuous anneal process is performed in a wet atmosphere with a dewpoint of more than 80° F.7. The process of claim 6 , wherein the continuous anneal process is performed in a wet atmosphere with a dewpoint of more than 100° F.8. The process of claim 1 , wherein the coating leaves a residue of a rare earth oxide in the range of about 300 to about 3000 μg/m.9. The process of claim 8 , wherein the residue of the rare earth oxide is in the range of 500 to about 1000 μg/m.10. The process of claim 1 , wherein the continuous anneal process is performed at a temperature ...

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Номер записи: 33
28-01-2021 дата публикации

Seamless steel pipe heat-treatment-finishing-treatment continuous facility

Номер: US20210025021A1
Автор: Atsushi Soma, Hideki MITSUNARI, Hiroki KAMITANI, Keiichi Kondo, Seiya OKADA, Shinji Yoshida, Takanori Tanaka, Takuya Matsumoto, Yuji Arai
Принадлежит: Nippon Steel Corp

A seamless steel pipe heat-treatment-finishing-treatment continuous facility includes: a heat treatment apparatus; a steel pipe inspection apparatus which performs a test for a surface defect and/or an inner defect of the seamless steel pipe, the steel pipe inspection apparatus being disposed downstream of the heat treatment apparatus; a main transfer mechanism which forms a main transfer path MT for transferring the seamless steel pipe, discharged from the heat treatment apparatus, to the steel pipe inspection apparatus disposed downstream of the heat treatment apparatus; and a first forced steel pipe-temperature reduction apparatus which forcibly reduces a temperature of the seamless steel pipe on the main transfer path MT, the first forced steel pipe-temperature reduction apparatus being disposed on the main transfer path MT at a position downstream of the heat treatment apparatus and upstream of the steel pipe inspection apparatus.

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Номер записи: 34
24-01-2019 дата публикации

METHOD OF MANUFACTURING ELECTRICAL FEEDTHROUGH INCLUDING PROCESSES FOR REDUCING STRESS IN PACKAGES HAVING A HIGH-CTE METAL AND LOW-CTE SEALING MATERIAL INTERFACE

Номер: US20190027914A1
Автор: Sawyer Robert, Settles Nelson, Xia Hua
Принадлежит:

Methods for use in the manufacture or assembly of an electrical feedthrough to provide a solution to the technical and operational challenges that may arise from use of a high-CTE metal/low-CTE sealing material based assembly or package. In some embodiments, the inventive method includes a thermal tempering and thermal quenching process that is used to create an interfacial layer of the sealing material in which there exists a CTE gradient from sealing material to the metal shell and pin(s). This enables the production of an electrical feedthrough assembly that can tolerate high-CTE mismatch induced mechanical stress over a wide operating temperature range. 116.-. (canceled)17. An electrical feedthrough assembly , comprising:one or more conductive pins;a metal shell surrounding a region containing the one or more conductive pins; anda layer or layers of a sealing material, the layer or layers including a region or regions in which a value of the sealing material coefficient of thermal expansion (CTE) varies in an area around each of the one or more conducting pins and across at least a portion of an area between the one or more conducting pins and the metal shell.18. The electrical feedthrough assembly of claim 17 , wherein the area around each of the one or more conducting pins includes the interfaces between the conducting pins and sealing material claim 17 , and the area between the one or more conducting pins and the metal shell includes the interfaces between the sealing material and the metal shell.19. The electrical feedthrough assembly of claim 17 , wherein the sealing material's composition claim 17 , morphology claim 17 , or microstructure claim 17 , either alone or in combination claim 17 , varies in the area around each of the one or more conducting pins and across at least a portion of the area between the one or more conducting pins and the metal shell.20. The electrical feedthrough assembly of claim 19 , wherein the variation in the material's ...

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Номер записи: 35
01-02-2018 дата публикации

METHOD FOR PRODUCING NON-ORIENTED ELECTRICAL STEEL SHEETS

Номер: US20180030558A1
Автор: KURIHARA Kohei, Nakajima Hiroaki, Oda Yoshihiko, Okubo Tomoyuki
Принадлежит: JFE STEEL CORPORATION

In the production of a non-oriented electrical stress sheet by hot rolling a steel slab containing, by mass %, C: not more than 0.005%, Si: not more than 8.0%, Mn: 0.03-3.0%, P: not more than 0.2%, S: not more than 0.005%, Al: not more than 3.0%, N: not more than 0.005%, Ni: not more than 3%, Cr: not more than 5%, Ti: not more than 0.005%, Nb: not more than 0.003%, As: not more than 0.005% and O: not more than 0.005%, subjecting to one cold rolling or two or more cold rollings interposing an intermediate annealing therebetween after conducting a hot band annealing or without conducting a hot band annealing and subjecting to a finish annealing, an average heating rate from 600° C. to 700° C. during the heating process in the finish annealing is set to not less than 50° C./sec. 1. A method for producing a non-oriented electrical steel sheet by hot rolling a steel slab having a chemical composition comprising C: not more than 0.005 mass % , Si: not more than 8.0 mass % , Mn: 0.03-3.0 mass % , P: not more than 0.2 mass % , S: not more than 0.005 mass % , Al: not more than 3.0 mass % , N: not more than 0.005 mass % , Ni: not more than 3 mass % , Cr: not more than 5 mass % , Ti: not more than 0.005 mass % , Nb: not more than 0.003 mass % , As: not more than 0.005 mass % , O: not more than 0.005 mass % and the remainder being Fe and inevitable impurities , subjecting to one cold rolling or two or more cold rollings interposing an intermediate annealing therebetween after a hot band annealing or without a hot band annealing , and further to a finish annealing , wherein an average heating rate from 600° C. to 700° C. during the heating process in the finish annealing is set to not less than 50° C./sec.2. The method for producing a non-oriented electrical steel sheet according to claim 1 , wherein the heating process in the finish annealing is conducted by heating through induction heating and then radiation heating to set an average heating rate from 700° C. to 760° C. to ...

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Номер записи: 36
11-02-2016 дата публикации

RAIL MANUFACTURING METHOD AND MANUFACTURING EQUIPMENT

Номер: US20160040263A1
Автор: FUKUDA Hiroyuki, Kijima Hideo, OKUSHIRO Kenji, YAMAGUCHI Moriyasu
Принадлежит:

Rail manufacturing method performs, on at least a head of the rail that is hot after hot-rolled at an austenite region temperature or higher or after heated to the austenite region temperature or higher, forced cooling: for 10 seconds from start of the forced cooling so that a cooling rate at a surface of the head becomes 1° C./s to 20° C./s; during a period after a lapse of 10 seconds from the start until heat generation during transformation begins at the surface so that the cooling rate becomes 1° C./s to 5° C./s; during transformation from beginning to end of the heat generation during transformation so that the cooling rate becomes lower than 1° C./s or a temperature-rising rate becomes 5° C./s or lower; and during a period after the end of the heat generation during transformation until temperature at the surface becomes 450° C. or lower so that the cooling rate becomes 1° C./s to 20° C./s. 1. A rail manufacturing method comprising:performing forced cooling on at least a head of the rail that is hot after hot-rolled at an austenite region temperature or higher or after heated to the austenite region temperature or higher for 10 seconds from start of the forced cooling so that a cooling rate at a surface of the head becomes 1° C./s to 20° C./s;performing the forced cooling during a period after a lapse of 10 seconds from the start of the forced cooling until heat generation during transformation begins at the surface of the head so that the cooling rate at the surface of the head becomes 1° C./s to 5° C./s;performing the forced cooling during transformation from beginning to end of the heat generation during transformation so that the cooling rate at the surface of the head becomes lower than 1° C./s or a temperature-rising rate becomes 5° C./s or lower; andperforming the forced cooling during a period after the end of the heat generation during transformation until temperature at the surface of the head becomes 450° C. or lower so that the cooling rate at the ...

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Номер записи: 37
08-02-2018 дата публикации

Thermal Process Device With Non-Uniform Insulation

Номер: US20180038649A1
Автор: PECK Kevin
Принадлежит:

A thermal process device for heat treating a product or plurality of products includes a thermal processing chamber having opposed distal ends and at least one controllable heating zone. At least one buffer zone disposed is at each of the distal ends, the buffer zones and at least one heating zone of the thermal processing chamber forming a heating element assembly having an inner and outer surface. At least one layer of insulating material is disposed along the at least one buffer and heating zones of the thermal processing chamber and forming part of the heating element assembly, the at least one layer of insulating material having a controlled efficiency being applied non-uniformly across an axial length of the heating assembly. 1. A thermal process device for heat treating a product or plurality of products , the device comprising:a thermal processing chamber having opposed distal ends and at least one controllable heating zone;at least one buffer zone disposed at each of the distal ends, the buffer zones and at least one heating zone of the thermal processing chamber forming a heating element assembly having an inner and outer surface; andat least one layer of insulating material disposed along the at least one buffer and heating zones of the thermal processing chamber and forming part of the heating element assembly, the at least one layer of insulating material having a controlled efficiency being applied non-uniformly across an axial length of the heating assembly.2. The thermal processing device according to claim 1 , wherein a portion of the at least one layer of insulating material located at the at least one buffer zone has a maximized efficiency and a portion of the at least one layer of insulating material at the at least one heating zone has a lower efficiency to achieve a desired cooling rate.3. The thermal processing device according to claim 1 , wherein the efficiency of the insulating material is controlled by varying the thickness of the layer of ...

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Номер записи: 38
08-02-2018 дата публикации

R-t-b based rare earth permanent magnet

Номер: US20180040399A1
Автор: Keiji Takeda, Shota Miyazaki
Принадлежит: TDK Corp

An R-T-B based rare earth permanent magnet is expressed by formula: (R1 1-x (Y 1-y-z Ce y La z ) x ) a T b B c M d in which, R1 is one or more kinds of rare earth element not including Y, Ce and La. “T” is one or more kinds of transition metal, and includes Fe or Fe and Co as an essential component, “M” is an element having Ga or Ga and one or more of Sn, Bi and Si, 0.4≦x≦0.7, 0.00≦y+z≦0.20, 0.16≦a/b≦0.28, 0.050≦c/b≦0.070, 0.005≦d/b≦0.028, 0.25≦(a-2c)/(b-14c)≦2.00 and 0.025≦d/(b-14c)≦0.500. The magnet has a structure having a main phase, having a compound having a R 2 T 14 B type tetragonal structure, and a grain boundary phase, on an arbitrary cross sectional area, an area ratio of R-T-M, T-rich and R-rich phases, with respect to a total grain boundary phase area is 10.0% or more, 60.0% or less and 70.0% or less, respectively, and the coating rate of the grain boundary phase is 70.0% or more.

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Номер записи: 39
08-02-2018 дата публикации

Rare-earth nanocomposite magnet

Номер: US20180040404A1
Автор: Hidefumi Kishimoto, Kazuhiro Hono, Masao Yano, Noritsugu Sakuma, Weibin Cui, Yukiko Takahashi
Принадлежит: NATIONAL INSTITUTE FOR MATERIALS SCIENCE, Toyota Motor Corp

The invention provides a nanocomposite magnet, which has achieved high coercive force and high residual magnetization. The magnet is a non-ferromagnetic phase that is intercalated between a hard magnetic phase with a rare-earth magnet composition and a soft magnetic phase, wherein the non-ferromagnetic phase reacts with neither the hard nor soft magnetic phase. A hard magnetic phase contains Nd 2 Fe 14 B, a soft magnetic phase contains Fe or Fe 2 Co, and a non-ferromagnetic phase contains Ta. The thickness of the non-ferromagnetic phase containing Ta is 5 nm or less, and the thickness of the soft magnetic phase containing Fe or Fe 2 Co is 20 nm or less. Nd, or Pr, or an alloy of Nd and any one of Cu, Ag, Al, Ga, and Pr, or an alloy of Pr and any one of Cu, Ag, Al, and Ga is diffused into a grain boundary phase of the hard magnetic phase of Nd 2 Fe 14 B.

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Номер записи: 40
22-02-2018 дата публикации

DEVICE, METHOD, AND SYSTEM FOR COOLING A FLAT OBJECT IN A NONHOMOGENEOUS MANNER

Номер: US20180050406A1
Автор: Ammon Jörg, KOBOLLA HARALD
Принадлежит: SEMIKRON Elektronik GmbH & Co. KG

The apparatus serves for inhomogeneous cooling of a flat object with a first main face and a second main face opposite the first main face. The flat object is cooled by a cooling device from the direction of the first main face. On the second main face, a heating device locally acts upon a first partial face in such a way that the flat object is subjected to heat at said first partial face relative to a second partial face adjoining said first partial face in such a way that said first partial face is cooled more slowly in comparison with the second partial face and, during the cooling process, the second main face of the flat object therefore has an inhomogeneous temperature distribution at least in a partial time period of the cooling. 12200202. An apparatus for inhomogeneous cooling of a flat object () with a first main face () and a second main face () opposite said first main face , wherein:{'b': 2', '1', '200', '202', '4', '204', '2', '204', '206', '204', '204', '206', '202', '2, 'the flat object () is cooled by a cooling device () from the direction of the first main face () and wherein, on the second main face (), a heating device () locally acts upon a first partial face () in such a way that the flat object () is subjected to heat at said first partial face () relative to a second partial face () adjoining said first partial face () in such a way that said first partial face () is cooled more slowly in comparison with the second partial face () and, during the cooling process, the second main face () of the flat object () therefore has an inhomogeneous temperature distribution at least in a partial time period of the cooling.'}2. The apparatus as claimed in claim 1 , wherein:{'b': 2', '20', '22', '26', '20', '22, 'the flat object () is a base plate () of a power semiconductor module with a plurality of power electronic substrates () arranged thereon and solder () is arranged between the base plate () and the respective substrate ().'}3. The apparatus as ...

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Номер записи: 41
13-02-2020 дата публикации

CRANKSHAFT AND METHOD OF MANUFACTURE

Номер: US20200048727A1
Автор: Cremonesi James D., Gelazin Paul J., Wang Qigui, Wilson Daniel J., Yang Jianghuai
Принадлежит:

A method for manufacturing a crankshaft for an internal combustion engine with a plurality of journals having a hardened case with a first microstructure. The crankshaft is comprised of a steel comprising between about 0.3 wt % and 0.77 wt % Carbon. The first microstructure of the hardened case of the journals comprises between about 15% and 30% ferrite and a balance of martensite and the resultant subsurface residual stress between 310 MPa and 620 MPa. 1. A crankshaft for an internal combustion engine , the crankshaft comprising a plurality of journals each comprising a surface and a hardened case , and wherein the crankshaft is further comprised of a steel having up to about 0.77 wt % Carbon and the hardened case has a first microstructure comprising ferrite and martensite.2. The crankshaft of wherein the surface of the plurality of journals comprises a surface hardness between HRC 40 and 50.3. The crankshaft of wherein the first microstructure comprises up to 50% ferrite.4. The crankshaft of wherein the first microstructure comprises between about 15% and 30% ferrite.5. The crankshaft of wherein the steel comprises between 0.3 wt % and 0.77 wt % Carbon.6. The crankshaft of wherein the steel comprises 0.38 wt % Carbon.7. The crankshaft of wherein the crankshaft comprises residual stress between 310 MPa and 620 Mpa.8. The crankshaft of wherein the crankshaft comprises residual stress between about 400 MPa and 550 MPa.9. A method for manufacturing a ferrous workpiece claim 7 , the method comprising:providing a machined workpiece comprised of a steel comprising up to 0.77 wt % Carbon, and wherein the workpiece comprises a first journal having a surface;heating the surface of the first journal to an intercritical temperature; andquenching the surface of the first journal with a quench medium achieving a cooling rate between 15 to 20° C./sec.10. The method for manufacturing a ferrous workpiece of further comprises tempering the workpiece.11. The method for ...

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Номер записи: 42
22-02-2018 дата публикации

Manufacturing method of precision machine tool bearing with high precision stability

Номер: US20180051751A1
Автор: Dongsheng QIAN, Huajie Mao, Jiadong DENG, Lin Hua, Qinglong LIU
Принадлежит: Wuhan University of Technology WUT

A manufacturing method of precision machine tool bearing with high precision stability includes the procedures: (1) microstructural stabilization of bearing body: by cold ring rolling, two liquid quenching, ultrasonic assisted multiple cryo-tempering treatment and stress ageing treatment, the bearing body with high microstructure stability can be obtained; (2) precision machining; (3) internal stress relaxation of bearing body: after precision machining, by executing magnetic treatment on the bearing body, bearing ring with high microstructure stability and low internal stresses can be obtained; and (4) bearing assembly: finally precision machine tool bearing with high precision stability can be obtained. Considering that the critical factors affecting the precision stability of bearing is the degree of microstructure stability and internal stresses, by improving the microstructure stability and reducing residual stress in multistage manufacture phase, precision stability of precision machine tool bearing should be promoted.

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Номер записи: 43
10-03-2016 дата публикации

METHOD AND TOOL FOR HARDENING A HOLLOW PROFILE OF A STEEL WORKPIECE

Номер: US20160068921A1
Автор: FLEHMIG Thomas, Gorschlüter Jorg, KIBBEN Martin
Принадлежит:

Disclosed herein is a method and tool for hardening a hollow profile of a steel workpiece having an interior space. The method includes the steps of providing a workpiece having a hollow profile, heating the hollow profile, placing the hollow profile of the steel workpiece in a hardening tool, and cooling the hollow profile from the inside by way of a cooling core having an exterior shape that is complimentary to that of the structural shape of the interior space of the hollow profile. 1. A method of hardening a hollow profile of a steel workpiece , the method comprising:providing a steel workpiece having a hollow profile defining an interior space therein;heating the hollow profile of the steel workpiece;placing the hollow profile of the steel workpiece in a hardening tool; andcooling the hollow profile in the hardening tool by insertion of a cooling core into the interior space of the hollow profile, the cooling core having a shape complimentary to that of the interior space of the hollow profile.2. The method of claim 1 , further comprising directing a flow of a cooling medium through an interior of the cooling core claim 1 , so as to cool the cooling core.3. The method of claim 1 , further comprising cooling the cooling core by an external device.4. The method of claim 1 , wherein the cooling core is at least partially in contact with an inner surface of the hollow profile of the workpiece in the interior space.5. The method of claim 1 , wherein said step of placing the hollow profile of the steel workpiece in the hardening tool is performed after said step of heating the hollow profile.6. The method of claim 1 , further comprising:removing a surface layer from the hollow profile during said cooling step.7. The method of claim 6 , wherein said removing step includes applying dry ice to at least one of an outer surface of the hollow profile or the inner surface of the hollow profile in order to remove the surface layer.8. The method of claim 6 , wherein said ...

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Номер записи: 44
17-03-2016 дата публикации

PERMANENT MAGNET SOURCE POWDER FABRICATION METHOD, PERMANENT MAGNET FABRICATION METHOD, AND PERMANENT MAGNET RAW MATERIAL POWDER INSPECTION METHOD

Номер: US20160074936A1
Автор: KISHIMOTO Hidefumi, Manabe Akira, NOZAKI Mikiya, SAKUMA Noritsugu, SHOJI Tetsuya, YANO Masao
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A method for producing a raw material powder of a permanent magnet, includes: preparing a material powder of a permanent magnet, measuring magnetic characteristics of the material powder, and judging the quality of the material powder as the raw material powder based on a preliminarily determined relation between magnetic characteristics and the structure of the material powder. A method for producing a permanent magnet includes integrating material powders judged as good in the step of judging the quality as raw material powders by the method for producing a raw material powder of a permanent magnet. A method for inspecting a permanent magnet material powder includes transmitting a magnetic field to a material powder of a permanent magnet, receiving the magnetic field from the material powder, and measuring a magnetic field difference between the transmitted magnetic field and the received magnetic field as magnetic characteristics of the material powder. 19-. (canceled)10. A method for producing a raw material powder of a permanent magnet , which comprises the steps of:preparing a material powder of a permanent magnet,measuring magnetic characteristics of the material powder of the permanent magnet, andjudging the quality of the material powder as the raw material powder based on a preliminarily determined relation between magnetic characteristics and the structure of the material powder, wherein the step of measuring magnetic characteristics of the material powder includes the operation of:transmitting a magnetic field to the material powder, receiving the magnetic field from the material powder, and measuring a magnetic field difference between the transmitted magnetic field and the received magnetic field as the magnetic characteristics.11. The method for producing a raw material powder of a permanent magnet according to claim 10 , wherein an alternating magnetic field is used as the magnetic field.12. The method for producing a raw material powder of a ...

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Номер записи: 45
17-03-2016 дата публикации

DETERMINING THE FERRITE PHASE FRACTION AFTER HEATING OR COOLING OF A STEEL STRIP

Номер: US20160076119A1
Автор: BURGER Rainer, LINSBOD Robert, LINZER Bernd, MIKOTA Josef, RIMNAC Axel
Принадлежит:

A method for determining the ferrite phase fraction xafter heating or when cooling a steel strip () in a metallurgic system. Also, a device for carrying out the method. A method by which the ferrite phase fraction in the steel strip () can be determined online, quickly and easily, includes measuring a width wand a temperature Tof the steel strip (), wherein the steel strip () comprises a ferrite phase fraction x during the measurements; heating or cooling the steel strip (); when heating the steel strip () a phase conversion at least in part occurs, a→y from the ferrite state a into the austenitic state y and when cooling the steel strip a phase conversion at least in part occurs, from the austenitic state y into the ferrite state a; measuring of a width w and a temperature T of steel strip () converted at least in part; determining the ferrite phase fraction of the formula (I), wherein Tis a reference temperature and aand aare the linear heat expansion coefficients of ferrite and austenite. 3. The method as claimed in claim 1 , further comprising cooling the steel strip in a cooling zone before the measurement of the width wand of the temperature T.4. The method as claimed in claim 1 , further comprising annealing the steel strip and then measuring the width w and the temperature T of the at least partly converted steel strip during or after the annealing.5. The method as claimed in claim 4 , further comprising setting an annealing duration and/or an annealing temperature during the annealing as a function of the ferritic phase fraction x.6. The method as claimed in claim 5 , setting the annealing duration and/or the annealing temperature under open-loop or closed-loop control.8. The method as claimed in claim 1 , further comprising hot rolling the steel strip before claim 1 , the measurement of the width wand the temperature T.9. The method as claimed in claim 7 , further comprising measuring the width w and the temperature T of the at least partly converted steel ...

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Номер записи: 46
07-03-2019 дата публикации

METHOD FOR ROLLING AND/OR HEAT TREATING A METAL STRIP

Номер: US20190071750A1
Автор: Behrens Holger, Biglari Mostafa, Klein Carsten Andreas, Klinkenberg Christian, Kuemmel Lutz, Sommers Ulrich
Принадлежит:

The invention relates to a method for rolling a metal product (), wherein the metal product is subjected to a rolling operation at a first station (), which rolling operation is controlled by a control device (), wherein the product () is subject to a measurement at a second station (), wherein the product () is subjected to a further processing operation at a third station (), and wherein the product () is in a specified quality at a fourth station (). In order to increase the quality of the produced strip, the invention provides that the method has the following steps: a) measuring the value of a material property (IW) that the second station (); b) feeding the value measured at the second station () to the control device (), comparing the measured value with a value (SW) stored in the control device (), and adjusting a parameter (PPI) if the measured value deviates from the stored value (SW), e) measuring a value of a quality material property (Q) at the fourth station (); d) comparing the measured value with a stored value, and initiating a measure to influence the quality material property (Q) if the measured value deviates from the stored value beyond a permissible tolerance 1112314251641761. A method of rolling and/or heat treating a metallic product () , in particular a strip or sheet , wherein the product () is subjected at a first position () to a rolling and/or heat treating operation which is controlled and/or regulated by a control device and/or regulating device () , wherein the product () is subjected at a second position () downstream from the first position () to a measuring by a measuring device () , wherein the product () is subjected at a third position () downstream from the second position () to another working operation , and wherein the product () is present at a fourth position () downstream from the third position () in a given quality , wherein the quality of the product is characterized by the quality-material property (Q) of the product ...

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Номер записи: 47
26-03-2015 дата публикации

RAIL RESTRAINING METHOD AND RAIL RESTRAINING DEVICE

Номер: US20150082611A1
Автор: Kataoka Yuzuru, Kojo Rinya, Matsuoka Ryo, OKUSHIRO Kenji, Takahashi Hideki, Yoshida Yoshikazu
Принадлежит: JFE STEEL CORPORATION

A rail restraining method for restraining a hot-rolled rail in an upright position at a time of forced cooling of a head portion and a foot portion of the rail includes defining a predetermined position within 2 meters from each of both end faces of the rail along a longitudinal direction of the rail as a first restraining position, defining a predetermined position 3 to 10 meters from the first restraining position in a direction toward center of the rail along the longitudinal direction of the rail as a second restraining position at the time of forced cooling, and restraining displacement of the rail in a vertical direction at the first restraining position and the second restraining position by a restraining force F (kN) that satisfies following Expression (1): The present invention relates to a rail restraining method and a rail restraining device that restrain a hot-rolled rail in an upright position in a cooling process on the head portion and the foot portion of the rail.There are cases in which a hot-rolled high-temperature rail in the austenitic region or higher temperature is subjected to forced cooling, more specifically, being cooled by a cooling medium jetted onto the rail as a heat treatment to ensure desired quality such as hardness required for the head portion of the rail. This forced cooling for the heat treatment (hereinafter, also referred to as heat treatment cooling) is normally performed until the composition of the head portion of the rail is fully transformed from austenite to pearlite or bainite, and the cooling stop temperature is about 400° C. to 500° C.The above-described heat treatment cooling of the rail is normally performed from both sides of the head portion side and the foot portion side while the rail is in an upright state. However, a difference in temperature arises between the head portion and the foot portion thereof in the course of cooling, and due to the difference in temperature, a thermal stress to warp in a vertical ...

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Номер записи: 48
12-06-2014 дата публикации

PLANT AND METHOD FOR HOT FORMING BLANKS

Номер: US20140158256A1
Автор: Bors Matthias
Принадлежит:

There is provided a heating device, in particular an austenitization device, for a plant for hot forming blanks, wherein the heating device is for locally heating, in particular austenitization, regions of the blanks and has at least one burner. Also included is means for moving the burner and/or the flame of the burner to the regions of the blank which are to be subjected to local heating. 1. A heating device for a plant for hot forming blanks , comprising:at least one burner, andmeans for moving at least one of the at least one burner and a flame of the at least one burner to regions of the blanks for local heating.2. The heating device according to claim 1 , wherein the heating device comprises an austenitization device.3. The heating device according to claim 1 , wherein the moving means comprises a robot.4. The heating device according to claim 1 , wherein the at least one burner is selected from the group consisting of a hydrogen-oxygen burner claim 1 , a fuel-oxygen burner and an acetylene burner.5. The heating device according to claim 1 , wherein the at least one burner comprises a pre-mixing burner.6. The heating device according to claim 2 , wherein the austenitization device is adapted for the local heating of the blanks to a temperature of between 750 to 1050° C.7. The heating device according to claim 1 , wherein the at least one burner comprises a plurality of nozzle openings.8. The heating device according to claim 7 , wherein the plurality of nozzle openings comprise from between 100 to 1000 nozzle openings.9. The heating device according to claim 1 , wherein the at least one burner comprises a plurality of nozzle openings claim 1 , wherein each one of the plurality comprises a diameter less than 2 mm claim 1 , and a distance between two adjacent nozzle openings is from between 1 mm and 4 mm.10. The heating device according to claim 1 , wherein the heating device comprises an output of between 50 and 500 kW.11. The heating device according to claim ...

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Номер записи: 49
24-03-2016 дата публикации

HIGH TEMPERATURE OXIDATION-RESISTANT COATED STEEL PLATE AND HOT STAMPING METHOD THEREOF

Номер: US20160083814A1
Автор: HSIEH SHEAU-HWA, HSU CHENG-EN, KUO CHING-KUO, LO I-HSUANG, WANG SHI-WEI
Принадлежит:

A high temperature oxidation-resistant coated steel plate includes a steel base material and a high temperature oxidation-resistant coating. The high temperature oxidation-resistant coating is formed by coating a high temperature oxidation-resistant paint onto the steel base material and baking in an oven. The high temperature oxidation-resistant paint includes a binder and a plurality of micron aluminum flakes. The binder has a three-dimensional molecular structure of Al—O. The micron aluminum flakes has a micron-sized thickness and a length ranging from 5 to 30 μm inclusive. The disclosure can enhance high temperature oxidation-resistant ability and hot stamping characteristics of the coated steel plate, and makes objects after hot stamping have good spot weldability and coating performance. 1. A high temperature oxidation-resistant coated steel plate , comprising:a steel base material; anda high temperature oxidation-resistant coating formed by coating a high temperature oxidation-resistant paint onto the steel base material and baking in an oven, wherein the high temperature oxidation-resistant paint comprises a binder and a plurality of micron aluminum flakes, the binder has a three-dimensional molecular structure of Al—O, and the micron aluminum flakes has a micron-sized thickness and a length ranging from 5 to 30 μm inclusive.2. The high temperature oxidation-resistant coated steel plate of claim 1 , wherein the steel base material is a manganese-boron steel base material.3. The high temperature oxidation-resistant coated steel plate of claim 1 , wherein the thickness of the high temperature oxidation-resistant coating is between 2 and 10 μm inclusive.4. The high temperature oxidation-resistant coated steel plate of claim 1 , wherein the weight of the micron aluminum flakes is 5-30% of the total weight of the paint.5. The high temperature oxidation-resistant coated steel plate of claim 1 , wherein the binder is made with a sol-gel method.6. The high ...

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Номер записи: 50
23-03-2017 дата публикации

COOLING APPARATUS AND MULTI-CHAMBER HEAT TREATMENT APPARATUS

Номер: US20170081737A1
Автор: ISOMOTO Kaoru, Katsumata Kazuhiko, NAGATA Takahiro, Nakayama Akira, Nishitani Gen, SHIMIZU Yuusuke
Принадлежит:

A cooling apparatus includes: cooling nozzles which are disposed around an object to be treated accommodated inside a cooling room and spray a cooling medium onto the object to be treated; a header pipe communicating with the cooling nozzles; and a cooling pump which supplies the cooling medium to the header pipe. The cooling nozzles are divided into groups. The header pipe is provided in each of the groups of the cooling nozzles. 1. A cooling apparatus comprising:cooling nozzles which are disposed around an object to be treated accommodated inside a cooling room and spray a cooling medium onto the object to be treated;a header pipe communicating with the cooling nozzles; anda cooling pump which supplies the cooling medium to the header pipe;wherein the cooling nozzles are divided into groups, andwherein the header pipe is provided in each of the groups of the cooling nozzles.2. The cooling apparatus according to claim 1 ,wherein the cooling nozzles are divided into two or more groups in a lateral direction of the object to be treated.3. The cooling apparatus according to claim 1 ,wherein the cooling nozzles are provided in multilevel in an up-and-down direction in a side area of the object to be treated.4. The cooling apparatus according to claim 2 ,wherein the cooling nozzles are provided in multilevel in an up-and-down direction in a side area of the object to be treated.5. The cooling apparatus according to claim 3 ,wherein a cooling nozzle of the uppermost level of the cooling nozzles is disposed in a higher position than the upper end of the object to be treated, and is disposed in an inner area of a cooling nozzle of another level of the cooling nozzles inside the cooling room.6. The cooling apparatus according to claim 4 ,wherein a cooling nozzle of the uppermost level of the cooling nozzles is disposed in a higher position than the upper end of the object to be treated, and is disposed in an inner area of a cooling nozzle of another level of the cooling ...

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Номер записи: 51
12-03-2020 дата публикации

Cooling System

Номер: US20200080168A1
Автор: KANG JONG-HOON, KO Seong-Hyun, LEE Pil-Jong, MIN Gwan-Sik, Seo Jae-Jyung
Принадлежит:

A cooling system according to an embodiment of the present invention may comprise: a cooling part which supplies a cooling fluid to a strip; and a boiling film removal part, which physically comes into contact with the strip and removes a boiling film formed by the cooling fluid. The boiling film removal part according to the embodiment may be disposed at a position where a nuclear boiling and a film boiling are mixed together along a widthwise direction of the strip. 1. A cooling system comprising:a cooling part which supplies a cooling fluid to a strip; anda boiling film removal part which physically comes into contact with the strip and removes a boiling film formed by the cooling fluid.2. The cooling system of claim 1 , wherein the boiling film removal part has a shape of a roller.3. The cooling system of claim 2 , wherein the boiling film removal part includes a brush claim 2 , disposed on an external circumferential surface of the roller claim 2 , and the brush is partially brought into contact with the strip to remove the boiling film.4. The cooling system of claim 1 , wherein the boiling film removal part is disposed in a position where a nuclear boiling and a film boiling are mixed together along a widthwise direction of the strip.5. The cooling system of claim 3 , wherein the brush of the boiling film removal part is formed of an acrylic material.6. The cooling system of claim 1 , wherein the cooling part includes a flow control cooling device disposed on a back end of the boiling film removal part and configured to control a flow rate based on a temperature deviation in the widthwise direction of the strip.7. The cooling system of claim 6 , further comprising:a temperature measurement part disposed on at least one of a front end and a back end of the cooling part to measure a temperature of the strip; anda control part configured to control the flow control cooling device based on the temperature measured by the temperature measurement part.8. The cooling ...

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Номер записи: 52
25-03-2021 дата публикации

CRANKSHAFT AND METHOD OF MANUFACTURE

Номер: US20210087645A1
Автор: Cremonesi James D., Gelazin Paul J., Wang Qigui, Wilson Daniel J., Yang Jianghuai
Принадлежит:

A method for manufacturing a crankshaft for an internal combustion engine with a plurality of journals having a hardened case with a first microstructure. The crankshaft is comprised of a steel comprising between about 0.3 wt % and 0.77 wt % Carbon. The first microstructure of the hardened case of the journals comprises between about 15% and 30% ferrite and a balance of martensite and the resultant subsurface residual stress between 310 MPa and 620 MPa. 1. A crankshaft for an internal combustion engine , the crankshaft comprising:a plurality of journals each comprising a surface and a hardened case, and wherein the crankshaft is made of a steel comprising between 0.3 wt % and 0.77 wt % Carbon and the hardened case has a first microstructure comprising ferrite and martensite having a residual stress between 310 MPa and 620 Mpa.2. The crankshaft of wherein the surface of the plurality of journals comprises a surface hardness between HRC 40 and 50.3. The crankshaft of wherein the first microstructure comprises up to 50% ferrite.4. The crankshaft of wherein the first microstructure comprises between about 15% and 30% ferrite.5. The crankshaft of wherein the steel comprises 0.38 wt % Carbon.6. The crankshaft of wherein the residual stress is between about 400 MPa and 550 MPa.7. A crankshaft for an internal combustion engine claim 1 , the crankshaft comprising:a main journal having a surface and a hardened case, wherein the hardened case penetrates into the main journal from the surface to a depth, wherein the main journal is comprised of steel having between 0.3 wt % and 0.77 wt % Carbon, and wherein the surface of the main journal has been heated to an intercritical temperature of between 724° C. and 822° C. and the surface of the main journal has been cooled at a cooling rate between 15 to 20° C./sec.8. The crankshaft of wherein the hardened case has a microstructure comprising between about 15% and 30% ferrite with the balance martensite.9. The crankshaft of wherein ...

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Номер записи: 53
05-05-2022 дата публикации

HEAT TREATMENT METHOD AND HEAT TREATMENT FURNACE

Номер: US20220136077A1
Автор: SUGIYAMA Masaki, TAKAHARA Kosuke, TAKAHASHI Kensuke, Takahashi Shinichi
Принадлежит:

The present disclosure relates to a heat treatment method and a heat treatment furnace that enable characteristics on an equal level to those when bluing processing is performed to be obtained without the bluing processing being performed in stress-relief annealing of a motor core. A heat treatment method according to one aspect is a heat treatment method in stress-relief annealing of a motor core. The heat treatment method includes an annealing step of annealing the motor core by using an exothermic converted gas as a furnace atmospheric gas, and a cooling step of cooling the motor core obtained in the annealing step, by using an exothermic converted gas as a furnace atmospheric gas, in a temperature range from a temperature in the annealing step to 500° C. at a cooling rate exceeding 600° C. per hour.

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Номер записи: 54
01-04-2021 дата публикации

Method for manufacturing kitchen knife by using multilayer material, and kitchen knife manufactured thereby

Номер: US20210094132A1
Автор: Jeong Wook Han, Nam Chul Cho, Sung Mo Cho
Принадлежит: Industry Academic Cooperation Foundation of Kongju National University

This application relates to a method of manufacturing a knife using a multilayer material. In one aspect, the method includes preparing a multilayer material for manufacturing a knife, and heating and then forging the multilayer material to form a knife-shaped structure including a blade part and a handle part. The method also includes grinding the blade part to form a sharpened knife-edge and applying mud, including kaolin and white clay, to an entire surface of the knife-shaped structure and removing the mud applied to the blade part. The method further includes heating the knife-shaped structure applied with the mud, and quenching the heated knife-shaped structure through oil-cooling. The method further includes etching a surface of the quenched knife-shaped structure to form a pattern on the surface and grinding the surface-etched knife-shaped structure to form a knife having a final shape.

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Номер записи: 55
14-04-2016 дата публикации

HOT EXTRUSION DIE TOOL AND METHOD OF MAKING SAME

Номер: US20160101452A1
Автор: Kraft Frank Frederick, Rich Jared
Принадлежит:

A hot extrusion die tool and a method of making the hot extrusion die tool are provided. The hot extrusion die tool includes a die tool component including a nickel-based super alloy; and a wear resistant coating deposited on the die tooling component. The method of making the hot extrusion die tool includes coating at least one portion of an extrusion die tool component comprising a nickel-based super alloy with a wear resistant coating at a high temperature; and hardening the extrusion die tool component and the at least one coated portion. 1. An extrusion die tool comprising:a die tool component comprising a nickel-based super alloy; anda wear resistant coating deposited on the die tooling component.2. The tool of claim 1 , wherein the die tool component is selected from the group consisting of a die body claim 1 , a mandrel claim 1 , and a plate.3. The tool of claim 1 , wherein the nickel-based super alloy is selected from the group consisting of Nickel alloy 41 claim 1 , Nickel alloy 718 claim 1 , and Nickel alloy 720.4. The tool of claim 1 , wherein the wear resistant coating comprises at least one of aluminum or titanium.5. The tool of claim 1 , wherein the wear resistant coating comprises one or more layers comprising AlO claim 1 , and one or more layers comprising TiCN.6. The tool of claim 1 , wherein the wear resistant coating is deposited by chemical vapor deposition (CVD) or physical vapor deposition (PVD).7. The tool of claim 1 , wherein the die tool component is selected from the group consisting of a mandrel and a plate; wherein the nickel-based super alloy is selected from the group consisting of Nickel alloy 41 claim 1 , Nickel alloy 718 claim 1 , and Nickel alloy 720; and wherein the wear resistant coating comprises one or more layers of AlO claim 1 , and one or more layers of TiCN.8. A method of making an extrusion die tool claim 1 , the method comprising the steps of:coating at least one portion of an extrusion die tool component comprising a ...

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Номер записи: 56
04-04-2019 дата публикации

STEEL WIRE FOR SPRING

Номер: US20190101176A1
Автор: Sasaki Taketoshi, Uwano Takafumi, YAMAZAKI TAKAO
Принадлежит: Sumitomo (SEI) Steel Wire Corp.

A steel wire for a spring has Ca or Na adhered thereto in an amount of 0.2 g/mor less. 1. A steel wire for a spring , having Ca or Na adhered thereto in an amount of 0.2 g/mor less.2. The steel wire for a spring according to claim 1 , wherein the steel wire for a spring has a surface roughness Rz of 10 μm or less.3. The steel wire for a spring according to claim 1 , wherein an area fraction of a ferrite phase in a cross-section taken in a direction orthogonal to an axial direction of the steel wire for a spring is 30% or less in a surface region extending from a surface toward a center of the steel wire for a spring to a depth of 1.0% of a diameter of the steel wire for a spring.4. The steel wire for a spring according to claim 3 , wherein C−Csatisfies 0.01% by mass or less claim 3 , where Cis a C content of the surface region claim 3 , and Cis a C content of a central region inside the surface region.5. The steel wire for a spring according to claim 1 , wherein H−Hsatisfies 30 or less in terms of Vickers hardness claim 1 , where His a surface hardness at a depth of 1.0% of a diameter of the steel wire for a spring from a surface toward a center of the steel wire for a spring in a cross-section taken in a direction orthogonal to an axial direction of the steel wire for a spring claim 1 , and His an internal hardness at a depth of 25% of the diameter.6. The steel wire for a spring according to claim 1 , whereinthe steel wire for a spring has an oxide film on a surface thereof, andthe oxide film has a thickness of from 1.0 μm to 20 μm. The present invention relates to steel wires for springs.This application claims priority to Japanese Patent Application No. 2016-057419, filed on Mar. 22, 2016, the entire contents of which are incorporated herein by reference.PTL 1 below discloses that nitriding treatment is performed after coiling to improve spring characteristics such as fatigue resistance and settling resistance.PTL 1: Japanese Unexamined Patent Application ...

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Номер записи: 57
19-04-2018 дата публикации

RARE EARTH MAGNET

Номер: US20180108463A1
Автор: FUJIKAWA Yoshinori, GOTO Syota, OKAWA Wakako
Принадлежит: TDK Corporation

A rare earth magnet includes main phase grains having an RTB type crystal structure. The main phase grains include C. A concentration ratio A1 (A1=αC/βC) of the main phase grains is 1.50 or more, where αC and βC are respectively a highest concentration of C and a lowest concentration of C in one main phase grain. 1. A rare earth magnet comprising main phase grains having an RTB type crystal structure ,whereinthe main phase grains comprise C, anda concentration ratio A1 (A1=αC/βC) of the main phase grains is 1.50 or more, where αC and βC are respectively a highest concentration of C and a lowest concentration of C in one main phase grain.2. The rare earth magnet according to claim 1 , wherein the concentration ratio A1 is 2.00 or more.3. The rare earth magnet according to claim 1 , wherein a position showing βC is located within 100 nm from an edge part of the main phase grain toward an inner part of the main phase grain.4. The rare earth magnet according to claim 1 ,whereinthe main phase grain comprises a concentration gradient of C increasing from an edge part of the main phase grain toward an inner part of the main phase grain, anda region with the concentration gradient of C has a length of 100 nm or more.5. The rare earth magnet according to claim 1 ,whereinthe main phase grain comprises a concentration gradient of C increasing from an edge part of the main phase grain toward an inner part of the main phase grain, anda region whose absolute value of the concentration gradient of C is 0.00010 atom %/nm or more has a length of 100 nm or more.6. The rare earth magnet according to claim 2 , wherein a position showing βC is located within 100 nm from an edge part of the main phase grain toward an inner part of the main phase grain.7. The rare earth magnet according to claim 2 ,whereinthe main phase grain comprises a concentration gradient of C increasing from an edge part of the main phase grain toward an inner part of the main phase grain, anda region with the ...

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Номер записи: 58
03-05-2018 дата публикации

METHOD FOR PRODUCING A PLANETARY GEAR SHAFT HAVING INCREASED HARDNESS

Номер: US20180119243A1
Автор: Goldsberry Earl, GRIFFIN Joseph T., PIERCE Shawn, Thomas Al
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

A method of hardening a planetary gear shaft includes carbonitriding an outer peripheral surface of the planetary gear shaft and quenching the planetary gear shaft in oil at a temperature between approximately 120 and 150° C. The method also includes quenching the planetary gear shaft in a liquid at a temperature between approximately −70 and −120° C., and tempering the planetary gear shaft. After tempering, the outer peripheral surface of the planetary gear shaft includes a surface hardness of HV 832 or more and with the shaft material maintaining a hardness of at least HV 513 to a depth of at least 0.5 mm. High temperature tempering and induction hardening steps may be added to obtain soft ends of the shaft suitable for a staking operation. 1. A method of hardening a planetary gear shaft , comprising:carbonitriding an outer peripheral surface of the planetary gear shaft;quenching the planetary gear shaft in oil at a temperature between approximately 120 and 150° C.;quenching the planetary gear shaft in a cryogenic fluid at a temperature between approximately −70 and −120° C.; andtempering the planetary gear shaft,wherein, after tempering, the outer peripheral surface of the planetary gear shaft includes a hardened portion having a surface hardness of HV 832 or more and with the shaft material maintaining a hardness of at least HV 513 to a depth of at least 0.5 mm.2. The method of claim 1 , wherein claim 1 , after quenching in the oil claim 1 , the hardened portion includes between 5% and 25% retained austenite.3. The method of claim 2 , wherein claim 2 , after quenching in the cryogenic fluid claim 2 , the hardened portion includes less than 5% retained austenite.4. The method of claim 1 , wherein tempering includes exposing the planetary gear shaft to a temperature of approximately 180-230° C. followed by air cooling at ambient temperature.5. The method of claim 1 , further including:high temperature tempering the planetary gear shaft; andinduction hardening the ...

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Номер записи: 59
04-05-2017 дата публикации

SOIL AUGER AND METHOD OF MANUFACTURE

Номер: US20170120315A1
Автор: Tucker Peter
Принадлежит:

An auger useable for creating an opening in the ground for a soil sensor housing wherein the sensor housing has a predetermined volume and a tapered outer surface, includes an auger made in accordance with the methods described and defined in this specification. The auger having a shaft having an outer surface of circular cross-section having an larger outer diameter at one end than the other end and a strip material having a helical shape with an inner wall having a larger inner diameter at one end than the other end of the helical shape wherein the helically shaped material is fixed over the outer diameter of the shaft to form a tapered auger with helical flighting. The volume of the opening created by an auger in the ground will provide a matching volume for a sensor housing of a predetermined volume such that substantially the full length of the tapered outer surface of the sensor is adjacent the ground along the full length/depth of the created opening. 1. A method of forming an auger useable for creating an opening in the ground , including:forming a shaft having an outer surface of circular cross-section having an larger outer diameter at one end than the other end;forming a strip material into a helical shape having an inner wall with a larger inner diameter at one end than the other end;passing the helically shaped material over the outer diameter of the shaft until a portion of the inner wall of the helically shaped material abuts the outer surface of the shaft; andfixing the helically shaped material to the shaft to form a tapered auger with helical flighting.2. The method according to including the further step:fixing a ground cutting edge member to the smaller outer diameter end of the shaft.3. The method according to wherein the cutting edge member is also fixed to the adjacent end of the helically shaped material.4. The method according to wherein the step of forming the rectangular strip material into a helix includes the following steps:fixing one ...

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Номер записи: 60
12-05-2016 дата публикации

RAIL ANCHOR

Номер: US20160130676A1
Автор: Austin Timothy John, Barry David M., Pisano Luigi
Принадлежит:

Methods, systems, and apparatus, including an apparatus that is a rail anchor comprising a head, a tail, and a belly section. The belly section comprises a top surface, a bottom surface, and two side surfaces. Each side surface comprises a contact-bearing surface area. The head comprises a bend along a length of the head. The tail comprises a notch. Each contact-bearing surface area has a surface area of at least 3 square inches and is adapted to extend at least 1.5 inches downward from the top of a railroad track crosstie along a side of the railroad track crosstie. 112-. (canceled)13. A method of manufacturing one or more rail anchors for a railroad track structure , comprising the steps of: feeding a bar into a press, wherein the bar is oriented so that a height of a cross section of the bar is greater than a width of the cross section of the bar;', 'forging each end of said bar to form, at each end, a shorter and wider profile, wherein a middle section of said bar is left having an original profile;', 'forming a rail anchor shape;', 'forming a jaw and a tail on said rail anchor; and', 'forming a notch near said tail;, 'for each of said one or more rail anchorsquenching said one or more rail anchors;cooling said one or more rail anchors; andtempering said cooled rail anchors;wherein each rail anchor has a contact-bearing surface of at least 3.0 square inches and is adapted to extend at least 1.5 inches downward from the top of a railroad track crosstie along a side of the railroad track crosstie.14112. The method of claim - , further comprising the steps of:inspecting said rail anchors;testing said rail anchors; andpackaging said rail anchors.15112. The method of claim - , wherein said quench tank comprises oil.16112. The method of claim - , wherein the said head , said tail , and said belly sections are formed at a temperature in a range of about 1900 degrees Fahrenheit to 2300 degrees Fahrenheit , and said cooled rail anchor is tempered at a temperature in a ...

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Номер записи: 61
12-05-2016 дата публикации

AUSTENITIC STEEL MATRIX-NANOPARTICLE COMPOSITE AND PRODUCING METHOD THEREOF

Номер: US20160130689A1
Автор: CHOI Hyunjoo, JEON Jonggyu, NAM Seungjin
Принадлежит:

An austenitic steel matrix-nanoparticle composite and a producing method thereof are provided. The composite includes: an austenitic steel matrix that includes an alloying element; and a nanoparticle that grows in situ in the matrix and that is formed in the matrix. The nanoparticle grows from the alloying element included in the austenitic steel matrix. The method includes: preparing an austenitic steel matrix including an alloying element; and heating the austenitic steel matrix. In the method, the nanoparticle grows in situ in the matrix from the alloying element which is solid-dissolved in the austenitic steel matrix by the heating. 1. An austenitic steel matrix-nanoparticle composite comprising:an austenitic steel matrix that includes an alloying element; anda nanoparticle that grows in situ in the matrix and that is formed in the matrix,wherein the nanoparticle grows from the alloying element included in the austenitic steel matrix.2. The austenitic steel matrix-nanoparticle composite according to claim 1 , wherein the alloying element includes an element selected from the group consisting of Mn claim 1 , Fe claim 1 , Al claim 1 , Si claim 1 , Cr claim 1 , Mo claim 1 , Ti claim 1 , Cu claim 1 , Ni claim 1 , Mg claim 1 , W claim 1 , and combinations thereof.3. The austenitic steel matrix-nanoparticle composite according to claim 2 , wherein the nanoparticle includes an element selected from the group consisting of Mn claim 2 , Fe claim 2 , Al claim 2 , Si claim 2 , Cr claim 2 , Mo claim 2 , Ti claim 2 , Cu claim 2 , Ni claim 2 , Mg claim 2 , W claim 2 , oxides and carbides thereof claim 2 , and combinations thereof.4. The austenitic steel matrix-nanoparticle composite according to claim 1 , wherein the size of the nanoparticle ranges from 5 nm to 50 nm.5. The austenitic steel matrix-nanoparticle composite according to claim 1 , wherein the strength of the austenitic steel matrix-nanoparticle composite ranges from 800 MPa to 2 claim 1 ,500 MPa.6. A method of ...

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Номер записи: 62
21-05-2015 дата публикации

Method for setting aging conditions and method for producing turbine vanes

Номер: US20150136280A1
Автор: Hiroharu Oyama, Takayuki Kurimura, Yuichi Hirakawa
Принадлежит: Mitsubishi Hitachi Power Systems Ltd

This method for setting aging conditions is provided with: a step for acquiring a master curve ( 20 ) indicating the relationship between an aging condition parameter and a material strength parameter by executing an aging process on a standard material; a step for acquiring a fitting point (A) indicating the value of the material strength parameter of a subject material of which the chemical component parameters and/or metal structure parameters differ from those of the standard material; a step for acquiring a corrected aging curve ( 30 ) by correcting the master curve ( 20 ) in a manner so that a portion of the master curve ( 20 ) corresponds to the fitting point (A); and a step for setting aging conditions for the subject material on the basis of the corrected aging curve ( 30 ).

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Номер записи: 63
10-05-2018 дата публикации

APPARATUS FOR ANNEALING ALLOY RIBBON AND METHOD OF PRODUCING ANNEALED ALLOY RIBBON

Номер: US20180127851A1
Автор: BOGGS Joseph Custis, Fuller, JR. Donald Robert, JR. Norman Eugene, Reed
Принадлежит:

An apparatus for annealing alloy ribbon, the apparatus comprising: an unwinder unwinding an alloy ribbon from a spool of the alloy ribbon; a heating member comprising a first flat surface, on which the alloy ribbon unwound by the unwinder runs while contacting the first flat surface, the heating member heating the alloy ribbon running while contacting the first flat surface through the first flat surface; a cooling member comprising a second flat surface, on which the alloy ribbon heated by the heating member runs while contacting the second flat surface, the cooling member cooling the alloy ribbon running while contacting the second flat surface through the second flat surface; and a winder winding the alloy ribbon cooled by the cooling member. 1. An apparatus for annealing alloy ribbon , the apparatus comprising:an unwinder unwinding an alloy ribbon from a spool of the alloy ribbon;a heating member comprising a first flat surface, on which the alloy ribbon unwound by the unwinder runs while contacting the first flat surface, the heating member heating the alloy ribbon running while contacting the first flat surface through the first flat surface;a cooling member comprising a second flat surface, on which the alloy ribbon heated by the heating member runs while contacting the second flat surface, the cooling member cooling the alloy ribbon running while contacting the second flat surface through the second flat surface; anda winder winding the alloy ribbon cooled by the cooling member.2. The apparatus for annealing alloy ribbon according to claim 1 , wherein the heating member is housed in a heating chamber.3. The apparatus for annealing alloy ribbon according to claim 1 , wherein a sucking structure sucking the alloy ribbon is provided at at least one of the first flat surface of the heating member or the second flat surface of the cooling member.4. The apparatus for annealing alloy ribbon according to claim 3 , wherein the sucking structure comprises an opening.5 ...

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Номер записи: 64
01-09-2022 дата публикации

GRAIN-ORIENTED ELECTRICAL STEEL SHEET

Номер: US20220275487A1
Автор: ICHIHARA Yoshihisa, Inoue Hirotaka, Odachi Masanori, Omura Takeshi, Senda Kunihiro, Takajo Shigehiro
Принадлежит: JFE STEEL CORPORATION

A grain-oriented electrical steel sheet having linear grooves formed cyclically in a rolling direction of the grain-oriented electrical steel sheet such that a longitudinal direction of the linear grooves intersects the rolling direction, in which each of the linear grooves has a discontinuous portion of center lines where center lines of the groove are shifted in a groove width direction, and when a width of the linear groove is defined as a and a distance in the groove width direction between the center lines in the discontinuous portion of center lines is defined as b, a and b satisfy relational expression (1) below. 1. A grain-oriented electrical steel sheet comprising:linear grooves formed cyclically in a rolling direction of the grain-oriented electrical steel sheet such that a longitudinal direction of the linear grooves intersects the rolling direction, wherein:each of the linear grooves has a discontinuous portion of center lines where center lines of the groove are shifted in a groove width direction, andwhen a width of the linear groove is defined as a and a distance in the groove width direction between the center lines in the discontinuous portion of center lines is defined as b, {'br': None, '0.05≤b/a≤0.95 \u2003\u2003(1).'}, 'a and b satisfy relational expression (1) below2. The grain-oriented electrical steel sheet according to claim 1 , wherein a length in the longitudinal direction of the linear groove of the discontinuous portion of center lines is 0 mm or more and 50 mm or less. This is the U.S. National Phase application of PCT/JP2020/026181 filed Jul. 3, 2020 which claims priority to Japanese Patent Application No. 2019-140966, filed Jul. 31, 2019, the disclosures of these applications being incorporated herein by reference in their entireties for all purposes.The present invention relates to a grain-oriented electrical steel sheet and, in particular, a grain-oriented electrical steel sheet that can preferably be used as a material for an iron ...

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Номер записи: 65
02-05-2019 дата публикации

SINTERING DEVICE AND SINTERING METHOD THEREOF

Номер: US20190128609A1
Автор: Ji Peng, LI Xuwei
Принадлежит:

Embodiments of the present disclosure provide a sintering device and a sintering method thereof. The sintering device includes: a housing, defining a chamber; and at least one first heating mechanism and at least one second heating mechanism, disposed in the chamber, wherein the at least one first heating mechanism and the at least one second heating mechanism provide different heating temperatures for a workpiece to be processed. 1. A sintering device , comprising:a housing, defining a chamber; andat least one first heating mechanism and at least one second heating mechanism, disposed in the chamber,wherein the at least one first heating mechanism and the at least one second heating mechanism provide different heating temperatures for a workpiece to be processed.2. The sintering device according to claim 1 , further comprising:a bearing mechanism, disposed in the chamber and configured to hold at least one workpiece to be processed and allow the workpiece to be processed to be movable along a first track,wherein the first heating mechanism and the second heating mechanism are arranged along the first track.3. The sintering device according to claim 2 , whereinthe bearing mechanism includes at least one bearing position, and the at least one bearing position is configured to hold the workpiece to be processed; andone of the bearing positions is configured to be aligned with any one of the first heating mechanism and the second heating mechanism.4. The sintering device according to claim 3 , whereinthe bearing mechanism includes at least two bearing positions; and any two of the bearing positions are configured to be respectively aligned with the first heating mechanism and the second heating mechanism.5. The sintering device according to claim 3 , whereina shape of the first track is straight line, curved line or zigzag line; and a movement mode of the bearing position along the first track is reciprocating movement or one-way movement.6. The sintering device ...

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Номер записи: 66
23-04-2020 дата публикации

HEAT RECOVERY SYSTEM

Номер: US20200124363A1
Автор: Endo Yasuhiro, MATSUBARA Amane, MORI Akio, Morimoto Yasuhiro, NAKAI Motoo, Ueda Yusuke, WAKITA Yasuyuki
Принадлежит:

A heat recovery system includes a plurality of heat source portions; a heat exchanger connected to the heat source portions via a primary flow path portion through which a first fluid flows, and configured to perform heat exchange between the first fluid and a second fluid; a valve mechanism configured to select a flow path that connects the heat exchanger and the heat source portions; and a power generation unit connected to the heat exchanger via a secondary flow path portion through which the second fluid flows, and configured to generate electric power using the second fluid. Timing of a temperature rise of the first fluid in one heat source portion is different from that in another heat source portion. The valve mechanism operates in accordance with the timing of the temperature rise of the first fluid in each of the heat source portions. 1. A heat recovery system comprising:a plurality of heat source portions configured to raise a temperature of a first fluid using heat obtained by treating an object;a heat exchanger connected to the plurality of heat source portions via a primary flow path portion through which the first fluid flows, and configured to perform heat exchange between the first fluid and a second fluid;a valve mechanism provided in the primary flow path portion and configured to select a flow path that connects the heat exchanger and the heat source portions; anda power generation unit connected to the heat exchanger via a secondary flow path portion through which the second fluid flows, and configured to generate electric power using the second fluid as an input, whereintiming of a temperature rise of the first fluid in one of the heat source portions is different from timing of a temperature rise of the first fluid in another of the heat source portions, and the valve mechanism operates in accordance with the timing of the temperature rise of the first fluid in each of the plurality of heat source portions.2. The heat recovery system according ...

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Номер записи: 67
09-05-2019 дата публикации

TEMPERATURE-CONTROL DEVICE FOR COMPONENTS

Номер: US20190136338A1
Автор: Ebner Robert, PSCHEBEZIN Ulrich
Принадлежит:

The present invention relates to a temperature-control device for controlling the temperature of a component part, in particular a wheel rim. The temperature-control device has a housing, in which an at least partly closed temperature chamber is formed, wherein the component part can be arranged in the temperature chamber. The temperature-control device further has a nozzle matrix having a plurality of nozzles, wherein a tempering medium can be flowed through the nozzles on the component part. The temperature-control device further has a control unit, which is coupled to the nozzle matrix. The control unit is configured to control a first group of nozzles of the nozzles and a second group of nozzles independent from each other, such that the first group of nozzles flows a first tempering medium having a first temperature-control characteristic and the second group of nozzles flows a second tempering medium having a second temperature-control characteristics on the component part. 1. Temperature-control device for controlling the temperature of a component part , in particular a wheel rim , the temperature-control device having:a housing, in which an at least partly closed temperature chamber is formed,wherein the component part is arrangeable in the temperature chamber,a nozzle matrix having a plurality of nozzles,wherein a tempering medium can be streamed through the nozzles on the component part,a control unit, which is coupled to the nozzle matrix,wherein the control unit is configured to control a first group of nozzles having at least one of the nozzles and a second group of nozzles having at least one of the nozzles independently from each other, such that the first group of nozzles flows a first tempering medium having a first temperature-control characteristics and the second group of nozzles flows a second tempering medium having a second temperature-control characteristics on the component part.2. Temperature-control device according to claim 1 ,wherein ...

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Номер записи: 68
02-06-2016 дата публикации

Method of Manufacturing Hydraulic Hammer Using Male and Female Gauges

Номер: US20160151902A1
Автор: Taylor Eric
Принадлежит:

A method of manufacturing a hydraulic hammer using a male gauge and a female gauge is provided wherein the hammer comprises a body and a chuck housing that are connectable by cooperatively formed thread fittings. A cooperatively threaded male gauge and female gauge can be used to form the threads on the body and the chuck housing and to determine the rotational orientation of the body and the chuck housing relative to one another. One of the gauges can be used to measure distortion of the chuck housing caused by heat treatment subsequent to the formation of the thread fitting and thereby to determine the required subsequent machining of the chuck housing necessary to retain the appropriate relative rotational orientation when the chuck housing is connected to the body. The method can comprise the steps of making and appropriately marking the male gauge and the female gauge. 1. A method of manufacturing a hydraulic hammer using male and female gauges;the hammer comprising a chuck housing with a first threaded fitting and a body machined with a cooperatively formed second threaded fitting such that the chuck housing and the body are configured to be screwed together;the male and female gauges each having a thread that is formed to allow the gauges to be screwed together and each having at least one circumferential marking such that the gauges' relative rotational position can be determined when they are screwed together;the method comprising the steps of:machining the chuck housing with the first threaded fitting such that a first of the male and female gauges can be screwed therein;fully screwing the first gauge into the chuck housing and marking the chuck housing such that a rotational position of the first gauge relative to the chuck housing can be determined;removing the first gauge;hardening the chuck housing;determining the distortion of the chuck housing caused by the hardening by fully screwing the first gauge into the chuck housing and determining their ...

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Номер записи: 69
23-05-2019 дата публикации

SOLID LUBRICANT-COATED STEEL ARTICLES, METHOD AND APPARATUS FOR MANUFACTURING THEREOF AND QUENCHING OIL USED IN THE MANUFACTURING

Номер: US20190153556A1
Автор: Berg Mikael, FÄLLSTRÖM Mikael, ZHMUD Boris
Принадлежит:

A method for manufacturing of steel articles comprises nitriding () a steel article at a nitrification temperature in the interval 350-650° C., giving a nitrided steel article. The nitrided steel article is quenched () in a reactive quenching oil from the nitrification temperature. The reactive quenching oil comprises at least one of S, P, B, Mo and W. Thereby, the quenching additionally comprises coating () of the nitrided steel article by a solid lubricant comprising at least one of S, P, B, Mo and W. An apparatus for manufacturing of steel articles, a quenching oil and a steel article produced by the method are also disclosed. 125-. (canceled)26. A method for manufacturing of steel articles , comprising the steps of:nitriding a steel article at a nitrification temperature in the interval 350-650° C., giving a nitrided steel article; andquenching said nitrided steel article in a reactive quenching oil from said nitrification temperature;said reactive quenching oil comprising at least one of S, P, B, Mo and W;whereby said step of quenching additionally comprises coating of said nitrided steel article by a solid lubricant comprising at least one of S, P, B, Mo and W.27. The method according to claim 26 , wherein said reactive quenching oil comprises at least 0.1% of weight of the total of S claim 26 , P claim 26 , B claim 26 , Mo and W.28. The method according to claim 26 , wherein said reactive quenching oil comprises at most 10% of weight of the total of S claim 26 , P claim 26 , B claim 26 , Mo and W.29. The method according to claim 26 , comprising the further step of maintaining said nitrided steel article in an atmosphere of a nitrogen potential prohibiting de-nitriding an entire time between said step of nitriding and said step of quenching.30. The method according to claim 26 , comprising the further step of maintaining said nitrided steel article at said nitrification temperature an entire time between said step of nitriding and said step of quenching.31. ...

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Номер записи: 70
21-05-2020 дата публикации

METHOD AND ELECTRONIC DEVICE FOR DETERMINING THE TEMPERATURE OF A METAL STRIP, RELATED CONTROL METHOD, COMPUTER PROGRAM, CONTROL APPARATUS AND HOT ROLLING INSTALLATION

Номер: US20200156129A1
Автор: CORSELLO Daniele, HUIN Didier, JACOLOT Ronan, MORETTO Christian
Принадлежит:

A method for determining the temperature of a metal strip () inside a cooling apparatus () of a hot rolling installation is implemented by an electronic device (). This method includes acquiring a temperature measure of a strip portion at a current time instant; estimating, at the current time instant, a heat flux extracted from the strip portion inside the cooling apparatus according to a thermal model, and computing a strip portion temperature at a next time instant from the acquired temperature measure and the estimated extracted heat flux. The thermal model models an air cooling of the strip portion, a coolant header cooling of the strip portion by a coolant header and a remaining coolant cooling of the strip portion, wherein for the coolant header cooling the model models both an impingement cooling of the strip portion and a parallel flow cooling of the strip portion. 119-. (canceled)20. A method for determining the temperature of a metal strip , the strip being movable inside a cooling apparatus of a hot rolling installation , the method being implemented by an electronic determination device and comprising:acquiring a measure of a temperature of a strip portion at a current time instant; an air cooling corresponding to a cooling of the strip portion by air radiation and air convection,', 'a coolant header cooling corresponding to a cooling of the strip portion by at least one coolant header,', 'a remaining coolant cooling corresponding to a cooling of the strip portion by coolant remaining on the strip portion after the strip portion passed under the at least one coolant header,', 'an impingement cooling corresponding to a cooling of the strip portion by coolant impinging from the at least one coolant header, and', 'a parallel flow cooling corresponding to a cooling of the strip portion by coolant falling at a given distance from the at least one coolant header; and, 'estimating, at the current time instant, a heat flux extracted from the strip portion ...

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Номер записи: 71
29-09-2022 дата публикации

High productivity plant for the quenching of steel bars, quenching machine and corresponding method for quenching steel bars

Номер: US20220307102A1
Автор: Enrico Mozzi, Fabrizio PERE
Принадлежит: Danieli and C Officine Meccaniche SpA, Danieli Centro Combustion SpA

High productivity plant for the continuous quenching of steel bars which comprises a loading station suitable to dispose a plurality of bars separated and distanced from each other. Such plant also comprises a first treatment line, a quenching machine, a transfer station disposed downstream of the quenching machine, and a second treatment line.

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Номер записи: 72
11-09-2014 дата публикации

COMPOSITE STEEL PLATE

Номер: US20140255242A1
Автор: CHEN AIYING, Lu Jian, ZHANG JUNBAO
Принадлежит: The Hong Kong Polytechnic University

A composite steel plate in which at least two steel sheets are rolled to form a plate. One of the sheets has a composition that varies in a depthwise direction between nanocrystalline and micron grained. The plate is made by treating a steel sheet to produce a composition in the sheet that varies in a depthwise direction of the sheet between nanocrystalline and micron grained, stacking the treated sheet with at least one other steel sheet and rolling the sheets to form the plate.

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Номер записи: 73
01-07-2021 дата публикации

STEEL SHEET TEMPERATURE CONTROL DEVICE AND TEMPERATURE CONTROL METHOD

Номер: US20210198765A1
Автор: Ogasahara Tomoyoshi, Yamada Goki
Принадлежит: JFE STEEL CORPORATION

A steel sheet temperature control device including: a sheet temperature measurement unit; a furnace temperature measurement unit; an influence coefficient calculation unit; a control model setting unit that sets a control model; a state variable/disturbance estimation unit that estimates values of a state variable and a temperature disturbance variable of the control model at the same time; a furnace temperature change amount calculation unit that calculates a furnace temperature change amount of each of heating zones of a heating furnace under a constraint condition such that square sum of a deviation between a target value and the actual value of the temperature of the steel sheet at the outlet side of the heating furnace becomes minimum; and a furnace temperature control unit that controls a fuel flow rate used in each of the heating zones to achieve the calculated furnace temperature change amount. 1. A steel sheet temperature control device , comprising:a sheet temperature measurement unit that measures temperature of a steel sheet at an inlet side and an outlet side of a heating furnace including a plurality of heating zones disposed along a conveyance direction of the steel sheet;a furnace temperature measurement unit that measures furnace temperature of each of the heating zones;an influence coefficient calculation unit that calculates an influence coefficient representing temperature change of the steel sheet at the outlet side of the heating furnace in response to temperature change of the steel sheet at the inlet side of the heating furnace, and an influence coefficient representing temperature change of the steel sheet at the outlet side of the heating furnace in response to change in the furnace temperature of each of the heating zones, using a heating model equation capable of calculating the temperature of the steel sheet in the heating furnace, by inputting a set value of the temperature of the steel sheet at the inlet side of the heating furnace, ...

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Номер записи: 74
18-09-2014 дата публикации

Process to Improve Fatigue Strength of Micro Alloy Steels, Forged Parts Made From the Process and an Apparatus to Execute the Process.

Номер: US20140261921A1
Автор: Kalyani Babasaheb Neelkanth
Принадлежит:

The present invention describes a process to make enhanced fatigue strength micro-alloy steel. In the process of the present invention, the soaking temperature is maintained in the range of 900° C. to 1050° C. and soaking time in the range of 30-60 minutes depending on size of crankshaft to get refined grain size. Distortion of the components is prevented from occurring with provision of adequate supports especially designed for the process. Forged parts made using the process, such as crankshafts, have a refined grain pattern and result into 20 to 25% enhancement in torsion fatigue strength & 10-25% enhancement in bending fatigue strength. The present invention thus provides an enhanced ratio of the strength to material density and a micro-alloy whose torsion fatigue strength and bending fatigue strength are greater than the currently available micro-alloy steels. 1. A process to improve fatigue strength of forged parts made from vanadium micro alloy steels , said process having a step of refining the grain size , said step of refining the grain size in turn comprising:austenitising said parts by heating them to a first temperature which is in the range between 900-1050° C.,maintaining said parts at that temperature for a soaking period in order to allow said part to attain homogenized temperature, andcooling said parts to room temperature.2. A process as claimed in claim 1 , wherein said soaking period is 30 to 60 minutes.3. A process as claimed in wherein said cooling is applied by still or forced air cooling methods.4. A process as claimed in claim 3 , wherein during the austenitising claim 3 , soaking and cooling stages claim 3 , warp-avoidance support is provided to each of said parts.5. A forged part made from vanadium micro alloy steels said part having improved grain size and structure claim 3 , obtained through a process of forging that includes a step of improving grain size claim 3 , said improved grain structure being a pearlite structure claim 3 , said ...

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Номер записи: 75
18-09-2014 дата публикации

Synthetic Quenching Fluid Composition

Номер: US20140261926A1
Автор: Bianchi Simone, Marini Leandro, Matta Felice, Parodi Augusto
Принадлежит: A. & A. Fratelli Parodi S.p.A.

A fluid composition is prepared by esterification of (a) at least one synthetic alcohol and (b) a mixture of fatty acids, including at least oleic and linoleic acids, and at least one of a mixture comprising a Miristic acid, Palmitoleic acid, Margarinic acid, Margaroleic acid, α-Linoleic acid, Arachidic acid, Eicosenoic Behenic acid, and Erucic acid. The fatty acids can also include at least one of stearic acid and palmitic acid. The composition can be used as, or as part of, a quenching bath for a metal. 1. A synthetic quenching fluid composition prepared by esterification of:(a) at least one synthetic alcohol; and from 65 to 85% w/w of oleic acid;', 'from 6 to 10% w/w of linoleic acid;', 'from 0 to 3% w/w of stearic acid;', 'from 0 to 3.8% w/w of palmitic acid; and', '1.5 to 6% w/w in total composed of at least one of Miristic acid, Palmitoleic acid, Margarinic acid, Margaroleic acid, α-Linoleic acid, Arachidic acid, Eicosenoic Behenic acid, and Erucic acid., '(b) a mixture comprising2. The composition according to claim 1 , further comprising an anti-oxidant stabilizing additive or a mixture thereof.3. The composition according to claim 1 , wherein the synthetic alcohol is selected from Trimethylolpropane trioleate claim 1 , Pentaeritrol tetraoleate and Neopentilglycol dioleate.4. The composition according to claim 3 , further comprising at least one anti-oxidant stabilizing additive.5. The composition according to claim 3 , wherein the at least one anti-oxidant stabilizing additive is chosen among the group consisting of Octil-Butil Diphenilamine claim 3 , long-chain sulphonate acid salts claim 3 , phenols derivatives and Benzotriazoles like the N claim 3 ,N-bis(2-etylesyl)-4-metyl-1H-benzotriazole-1-metylamine and N claim 3 ,N-bis(2-etylesyl)-5-metyl-1H-benzotriazole-1-metylamine.6. A method of quenching a metal claim 1 , comprising using the composition of in a quenching bath for the metal.7. A method of quenching a metal claim 2 , comprising using the ...

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Номер записи: 76
21-06-2018 дата публикации

METHOD FOR SOLUTION HEAT TREATED ALLOY COMPONENTS

Номер: US20180171431A1
Автор: Anderson David W., Bales Daniel A., Benn Raymond C., Furrer David Ulrich, Hansen Eric A., Matzke William F., Schmidt Ivan M., Vargas Chris
Принадлежит:

A method of estimating an unknown solvus for a phase of a given alloy includes providing empirical data of a plurality of alloys from an alloy class, the empirical data at least including chemical compositions, heating rates, cooling rates and alloy solvus temperatures of the plurality of alloys, providing an alloy chemical composition, a selected heating rate and a selected cooling rate of another alloy from the alloy class that has an unknown solvus temperature, estimating the unknown solvus temperature based upon the empirical data to provide an estimated solvus temperature of the alloy, and establishing a solution heat treatment temperature corresponding to the estimated solvus temperature at which to treat a component that includes the alloy. 1. A method of estimating an unknown solvus for a phase of a given alloy , the method comprising:providing empirical data of a plurality of alloys from an alloy class, the empirical data at least including chemical compositions, heating rates, cooling rates and alloy solvus temperatures of the plurality of alloys;providing an alloy chemical composition, a selected heating rate and a selected cooling rate of another alloy from the alloy class that has an unknown solvus temperature;estimating the unknown solvus temperature based upon the empirical data to provide an estimated solvus temperature of the alloy; andestablishing a solution heat treatment temperature corresponding to the estimated solvus temperature at which to treat a component that includes the alloy.2. The method as recited in claim 1 , wherein the estimating of the unknown solvus temperature includes determining an influence of the chemical compositions on the solvus temperatures of the plurality of alloys.3. The method as recited in claim 1 , wherein the estimating of the unknown solvus temperature includes determining an influence of the heating rates on the solvus temperatures of the plurality of alloys.4. The method as recited in claim 1 , wherein the ...

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Номер записи: 77
22-06-2017 дата публикации

HEAT TREATMENT DEVICE AND COOLING DEVICE

Номер: US20170175214A1
Автор: ISOMOTO Kaoru, Katsumata Kazuhiko, NAGATA Takahiro, Nakayama Akira, Nishitani Gen, SHIMIZU Yuusuke
Принадлежит:

A heat treatment device includes: a heating device that heats a treatment object; a cooling device including a cooling room that accommodates the treatment object heated by the heating device and into which a cooling medium used for cooling the treatment object is supplied; a pressurized gas supplier that supplies pressurized gas into the cooling room; a pressure relief valve that communicates internal and external areas of the cooling room with each other when the pressure relief valve is opened; a pressure sensor that measures the pressure inside the cooling room; and a controller that controls the pressure relief valve such that the pressure relief valve is opened when a measurement result of the pressure sensor is higher than or equal to a threshold value. 1. A heat treatment device , comprising:a heating device that heats a treatment object;a cooling device including a cooling room that accommodates the treatment object heated by the heating device and into which a cooling medium used for cooling the treatment object is supplied;a pressurized gas supplier that supplies pressurized gas into the cooling room;a pressure relief valve that communicates internal and external areas of the cooling room with each other when the pressure relief valve is opened;a pressure sensor that measures a pressure inside the cooling room; anda controller that controls the pressure relief valve such that the pressure relief valve is opened when a measurement result of the pressure sensor is higher than or equal to a threshold value;wherein the cooling device is configured such that at least one stop period of supply of the cooling medium into the cooling room is provided during cooling for the treatment object.2. The heat treatment device according to claim 1 ,wherein a pipe capable of communicating the internal and external areas of the cooling room with each other is connected to the cooling room, andwherein the pressure relief valve is provided in the pipe and is capable of ...

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Номер записи: 78
02-07-2015 дата публикации

HOT-ROLLED STEEL SHEET, METHOD OF MANUFACTURING THE SAME, AND EQUIPMENT FOR MANUFACTURING THE SAME

Номер: US20150184266A1
Автор: Kim Duhan, Kim Jongryoul
Принадлежит: Industry-University Cooperation Foundation Hanyang University ERICA Campus

A method of manufacturing a hot-rolled steel sheet is explained. The method includes hot-rolling a slab, performing a first phase transformation process cooling a surface of the hot-rolled slab to phase-transform a structure of a surface portion of the hot-rolled slab, performing a second phase transformation process to phase-transform a structure of a central portion of the hot-rolled slab after the first phase transformation process, and coiling the slab including the phase-transformed surface portion and the phase-transformed central portion. 1. A method of manufacturing a hot-rolled steel sheet , the method comprising:hot-rolling a slab;performing a first phase transformation process cooling a surface of the hot-rolled slab to phase-transform a structure of a surface portion of the hot-rolled slab;performing a second phase transformation process to phase-transform a structure of a central portion of the hot-rolled slab after the first phase transformation process; andcoiling the slab including the phase-transformed surface portion and the phase-transformed central portion.2. The method of claim 1 , wherein a phase of the structure of the central portion of the hot-rolled slab is maintained during the first phase transformation process.3. The method of claim 2 , wherein a phase of the structure of the surface portion of the hot-rolled slab is maintained claim 2 , during the second phase transformation process.4. The method of claim 1 , wherein performing the first phase transformation process comprises:providing compressed air to the surface portion of the hot-rolled slab.5. The method of claim 1 , wherein performing the first phase transformation process comprises:jetting a liquid temperature-reducing material to the surface portion of the hot-rolled slab.6. The method of claim 1 , wherein the hot-rolled slab has an austenite structure claim 1 ,wherein the surface portion of the hot-rolled slab has a ferrite structure by the first phase transformation process, ...

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Номер записи: 79
29-06-2017 дата публикации

In-process laser hardening/forming of vehicle seat structures and components

Номер: US20170182918A1
Автор: Daniel J. Sakkinen, Mark Anthony Harris
Принадлежит: Johnson Controls Technology Co

A component formation and hardening process, and component ( 18, 30, 32, 36 and 50 ) made therefrom are provided. The process includes providing a steel blank ( 10 ) and inserting the blank ( 10 ) into a press ( 14 ), preliminarily stamping the steel blank ( 2 ) using a stamping press to form a preliminarily stamped intermediate component ( 22 ) and laser hardening ( 3, 3 ′) the preliminarily stamped intermediate component in selected regions of the stamped component. Subsequent to the step of laser hardening, the preliminarily stamped intermediate component is further stamped ( 4 ) to form a stamped component ( 18 ). The stamped component ( 18 ) is then ejected ( 5 ) from the stamping press as a stamped component with selectively hardened regions. The component made by the process has a defined load path based on regions that have been hardened and regions that retain the material characteristics.

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Номер записи: 80
05-07-2018 дата публикации

MECHANICAL COMPONENT

Номер: US20180187280A1
Автор: Ohki Chikara, SATO Miyu
Принадлежит:

There is provided a high-strength steel mechanical component. A mechanical component is a mechanical component composed of a steel having a carbon content of more than or equal to 0.2 mass % and less than or equal to 0.8 mass %, and includes a quench-hardened layer formed in a surface layer of the mechanical component. In the quench-hardened layer, a grain size number of prior austenite crystal grains is No. 11 or higher. Moreover, the quench-hardened layer may have a Vickers hardness of more than or equal to 500 HV. In this case, prior austenite crystal grains in the quench-hardened layer become fine, thereby providing the mechanical component with high strength. 1. A mechanical component composed of a steel having a carbon content of more than or equal to 0.2 mass % and less than or equal to 0.8 mass % , the mechanical component comprising a quench-hardened layer formed in a surface layer of the mechanical component ,in the quench-hardened layer, a grain size number of prior austenite crystal grains being No. 11 or higher.2. The mechanical component according to claim 1 , wherein the quench-hardened layer has a thickness of more than or equal to 4 mm.3. The mechanical component according to claim 1 , wherein the quench-hardened layer has a Vickers hardness of more than or equal to 500 HV. The present invention relates to a mechanical component, more particularly, a mechanical component having a hardened layer formed in a surface layer of the mechanical component.An ECAP (Equal Channel Angular Processing) method is a representative method for applying large strain to a metal material. The ECAP method is drawing attention as a large-strain processing method with which the shape of a material is not much changed before and after the processing. However, in the ECAP method, an amount of strain in one processing is not so large. Therefore, in the ECAP method, the processing has to be performed multiple times in order to exhibit desired fine crystal grains and ...

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Номер записи: 81
05-07-2018 дата публикации

HIGH-PRESSURE LIQUID-STATE OR SUPERCRITICAL-STATE QUENCHING APPARATUS

Номер: US20180187284A1
Автор: SHEN Peng, YANG Fan, Yang Jingfeng
Принадлежит:

Disclosed are a high-pressure liquid-state or supercritical-state quenching apparatus, comprising a working chamber, a heating device, a cooling device, a vacuum pump set, a storage tank, a buffer tank, a gas booster, a first pressure gauge, and a temperature controller. According to the Invention, vacuum liquid-state or supercritical-state quenching is implemented, which satisfies a quenching requirement of a large workpiece, and can also achieve an effect of high-pressure gas quenching. In addition, clean heat treatment is implemented, which avoids waste gas and waste water pollution, and is energy-saving and environmentally-friendly heat treatment. 1. A high-pressure liquid-state or supercritical-state quenching apparatus , comprising:{'b': 6', '8', '3', '1, 'a working chamber (), internally provided with a heating device () and a cooling device (), and connected to a vacuum pump set ();'}{'b': 17', '21', '6, 'a storage tank (), provided with a liquid carbon dioxide supply port (), and connected to a liquid carbon dioxide inlet of the working chamber ();'}{'b': 15', '6', '17', '6', '17, 'a buffer tank (), separately connected to the working chamber () and the storage tank () through a pressurization loop, and further separately connected to the working chamber () and the storage tank () through a circulation loop;'}{'b': 16', '15, 'a gas booster (), disposed at a gas outlet of the buffer tank ();'}{'b': 4', '6, 'a first pressure gauge (), disposed on the working chamber (); and'}{'b': 5', '6', '8', '3, 'a temperature controller (), disposed on the working chamber (), and separately connected to the heating device () and the cooling device ().'}214151817. The high-pressure liquid-state or supercritical-state quenching apparatus according to claim 1 , wherein the apparatus further comprises a second pressure gauge () disposed on the buffer tank () and a third pressure gauge () disposed on the storage tank ().311645. The high-pressure liquid-state or supercritical- ...

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Номер записи: 82
25-09-2014 дата публикации

HARDENING CELL

Номер: US20140284851A1
Автор: TISSOT Gérard
Принадлежит: ECM Technologies

A cell for quenching a charge under an atmosphere of gas comprises a centrifugal or helicon-centrifugal impeller comprising a gas intake opening and gas discharge openings. The impeller is rotated by a motor to cause a flow of the gas between the charge and a heat exchanger. The quenching cell comprises first and second mobile half-scrolls. In a first position, the first half-scroll guides the gas discharged by a first part of the discharge openings and the second half-scroll closes off a first portion of the intake opening. In a second position, the second half-scroll guides the gas discharged by a second part, different from the first part, of the discharge openings and the first half-scroll shuts off a second portion of the intake opening. 1. A gas quenching cell for a load , the cell comprising a centrifugal or mixed-flow impeller comprising a gas intake opening and gas discharge openings , the impeller being rotated by a motor to cause a gas flow between the load and a heat exchanger , the quenching cell comprising first and second mobile half-volutes , and wherein:in a first position, the first half-volute guides the gas discharged by a first portion of the discharge openings and the second half-volute shuts off a first portion of the intake opening; andin a second position, one of the first or second half-volute guides the gas discharged by a second portion, different from the first portion, of the discharge openings, and the other one of the first or second half-volute shuts off a second portion of the intake opening.2. The quenching cell of claim 1 , comprising an actuator laterally shifting the first and second half-volutes with respect to the impeller.3. The quenching cell of claim 1 , comprising an actuator rotating the first and second half-volutes with respect to the axis of the impeller.4. The quenching cell of claim 1 , further comprising:an enclosure containing the impeller, the load, and the heat exchanger;a panel located between the impeller and ...

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Номер записи: 83
21-07-2016 дата публикации

HEAT TREATMENT METHOD FOR STEEL MATERIAL

Номер: US20160208354A1
Автор: TATEISHI Hiroki
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A heat treatment method for a steel material according to the present invention includes: a first step of forming austenite by heating the steel material to a temperature equal to or higher than an A1 point; a second step of cooling the steel material heated in the first step, while keeping the steel material at a temperature higher than an Ms point, thereby causing the austenite of the steel material to be transformed into ferrite, pearlite, or bainite; and a third step of cooling the steel material to a temperature equal to or lower than the Ms point after the second step. According to the present invention, it is possible to provide a heat treatment method for a steel material which is capable of shortening a heat treatment time while suppressing the formation of martensite. 1. A heat treatment method for a steel material , comprising:a first step of forming austenite by heating the steel material to a temperature equal to or higher than an A1 point;a second step of cooling the steel material heated in the first step, while keeping the steel material at a temperature higher than an Ms point, thereby causing the austenite of the steel material to be transformed into ferrite, pearlite, or bainite; anda third step of cooling the steel material to a temperature equal to or lower than the Ms point after the second step.2. The heat treatment method for a steel material according to claim 1 , whereinthe steel material is carburized so that a carbon concentration gradually decreases in a direction from a surface of the steel material to an inside thereof,in the second step, the steel material is cooled while a surface temperature of the steel material is kept at a temperature higher than the Ms point, thereby causing austenite in the vicinity of the surface of the steel material to be transformed into ferrite, pearlite, or bainite, andafter the transformation of at least the austenite in the vicinity of the surface of the steel material into ferrite, pearlite, or bainite ...

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Номер записи: 84
19-07-2018 дата публикации

DEVICE FOR TREATING, BY HEAT TEMPERING, A METAL ELEMENT OF THE TUBE OR BAR TYPE HAVING ARCHED PORTIONS

Номер: US20180202015A1
Автор: Jaubert Philippe
Принадлежит: Eaton Leonard Group

The invention relates to a device for treating, by heat tempering, a metal element () of the tube or bar type having arched portions. The device includes heat treatment means having an induction coil () and a sprinkler ring (). According to the invention, this device includes means () for holding the metal element () that is composed of a clip () arranged so as to clamp around an end portion, referred to as the top, of the metal element and to keep the metal element freely suspended under said clip. The device also includes multi-axis robots () suitable for moving the induction coil () and the sprinkler ring () simultaneously along the metal element () starting from an end portion, referred to as the bottom, of the metal element that is opposite the top portion thereof. 1. A thermal quenching treatment device of a metal element , of the tube or bar type , having curved sections , comprising:a heat treatment device comprising an induction coil and a cooling device comprising spray nozzles integrated into an annular sprinkler ring,a holding device for the metal element,and a displacement device, the holding device and the heat treatment device are adapted to produce a relative displacement of the metal element inside the induction coil, and the annular sprinkler ring is arranged in close proximity to both the holding device and the heat treatment device,the holding device for maintaining the metal element is composed of a clamp arranged in such a way as to tighten a stretch of an end of the metal element, and to maintain the metal element freely suspended under the clamp, and there is provided a travel device that is capable of simultaneously moving the induction coil and the annular sprinkler ring along the metal element suspended under the clamp, from an end section of the metal element opposite to an upper section.2. The thermal quenching treatment device according to claim 1 , wherein the clamp retaining the metal element is carried by a rotational drive of the ...

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Номер записи: 85
05-08-2021 дата публикации

METHOD FOR HEAT TREATING A HOROLOGICAL COMPONENT

Номер: US20210238701A1
Автор: Perrinjaquet Olivier
Принадлежит: ROLEX SA

A method for heat treating a horological component includes the following steps: heating of the component by irradiation, using a laser beam, of at least 80% or at least 90% of the projected surface of the component parallel to the direction of the laser beam, and cooling of the component in a gas stream. 1. A method for heat treating a horological component , the method comprising the following steps:heating of the component by irradiation, using a laser beam, of at least 80% of the projected surface of the component parallel to the direction of the beam, thencooling of the component in a gas stream.2. The method as claimed in claim 1 , wherein the heating is a heating of the whole volume of the component.3. The method as claimed in claim 1 , wherein the gas stream is a flow of air or of a neutral or inert gas.4. The method as claimed in claim 1 , wherein the component is moved relatively to the laser beam during the heating.5. The method as claimed in claim 1 , wherein the component has:a greatest dimension less than 10 mm, and/or{'sup': '2', 'an area of greatest projected surface less than 20 mm, and/or'}{'sup': '3', 'a volume less than 10 mm.'}6. The method as claimed in claim 1 , wherein the component is an arbor and the laser beam is centered on this arbor.7. A horological component obtained by implementing the method as claimed in .8. A horological movement comprising a horological component as claimed in .9. A timepiece comprising a horological component as claimed in .10. The method as claimed in claim 1 , includingheating of the component by irradiation, using a laser beam, of at least 90% of the projected surface of the component parallel to the direction of the beam.11. The method as claimed in claim 5 , further including that the component has:a greatest dimension less than 8 mm, and/or{'sup': '2', 'an area of greatest projected surface less than 15 mm, and/or'}{'sup': '3', 'a volume less than 8 mm.'}12. The method as claimed in claim 5 , further ...

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Номер записи: 86
04-08-2016 дата публикации

MULTI-CHAMBER FURNACE FOR VACUUM CARBURIZING AND QUENCHING OF GEARS, SHAFTS, RINGS AND SIMILAR WORKPIECES

Номер: US20160223259A1
Автор: FUJAK Wieslaw, KORECKI Maciej, OLEJNIK Józef, STANKIEWICZ Marek, WOLOWIEC-KORECKA Emilia
Принадлежит: SECO/WARWICK S.A.

Multi-chamber furnace for vacuum carburizing and quenching of gears, shafts, rings and similar components has at least two process chambers connected in parallel, with a continuous feeding mechanism for individual workpieces. Those chambers—the first one being a heating chamber, the second being a carburizing chamber and the third one diffusion chamber—are configured in a vertical arrangement, placed in a shared vacuum space with gas-tight division, whereas at the ends of each chamber there are incorporated heating chambers with thermal insulation, with a graphite heating system and stepping feeding mechanism incorporated in the core for the purpose of continuous feeding of individual workpieces. At the ends of those chambers the construction incorporates transport chambers featuring loading and unloading systems X-Y enabling cooperation with individual process chambers through thermal and gas-tight doors installed in chamber ends, while external access to the transport chambers is ensured through loading and unloading locks. 1. A multi-chamber furnace for vacuum carburizing and quenching of gears , shafts , rings and similar workpieces comprising at least two process chambers (connected in parallel) with continuous feeding of individual workpieces , configured in a vertical or horizontal arrangement , and placed in a shared vacuum space with gas-tight division , whereas at the ends of those chambers there are incorporated transport chambers featuring loading and unloading systems enabling cooperation with individual process chambers through thermal and gas-tight doors installed in chamber ends , while external access to the transport chambers is ensured through loading and unloading locks.2. The furnace according to claim 1 , wherein the said furnace comprises three process chambers claim 1 , configured in a vertical arrangement—one over another—of which one is a heating chamber claim 1 , another is a carburizing chamber and the third one is a diffusion chamber.3. ...

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Номер записи: 87
03-08-2017 дата публикации

METHOD FOR HEATING STEEL SHEETS AND DEVICE FOR CARRYING OUT THE METHOD

Номер: US20170218473A1
Автор: HASLMAYR MICHAEL, Kolnberger Siegfried, Kurz Thomas, Sommer Andreas, STEGFELLNER Leopold
Принадлежит:

A method for heating a blank or a preformed steel sheet component for hot forming and/or quench hardening purposes. In at least some regions, the heating is carried out to a temperature above AC3; the heating of the Hank is embodied as a rapid heating and to this end, the blank is heated in a first zone at an average heating rate of >25 K/s up to about 600° C. and above this temperature, is heated at an average heating rate of >10 K/s up to a maximum of the AC3 temperature and then is transferred to a second zone in which the blank that has been preheated in the first zone is heated in at least some regions to temperatures greater than AC3, in particular >850° C., with the heating rate in the second zone being >10 K/s. The invention also relates to a device for carrying out the method. 1. A method for heating a blank or a preformed steel sheet component for hot forming and/or quench hardening purposes , comprising:heating the blank, in at least some regions, to a temperature above AC3;rapidly heating the blank, by heating the blank in a first zone at an average heating, rate of >25 K/s up to about 600° C. and above this temperature, heating the blank at an average heating rate of >10 K/s up to a maximum of the AC3 temperature; and then transferring the blank to a second zone in which the blank that has been preheated in the first zone is heated in at least some regions to temperatures greater than AC3, with the heating rate in the second zone being >10 K/s.22. The method according to claim 1 , further comprising claim 1 , after zone claim 1 , a third zone claim 1 , which is a homogenizing and holding zone; wherein the heating rate in the third zone is <10 K/s or the heating capacity is dimensioned so as to ensure a controlled temperature decrease of the blank claim 1 , but without undershooting transformation points of austenitized regions claim 1 , or so as to ensure maintenance of a temperature and temperature profile a the blank.3. The method according to claim 1 ...

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Номер записи: 88
11-07-2019 дата публикации

SINTERED COMPONENT

Номер: US20190210110A1
Автор: Sonoda Yasunori, Take Ryota
Принадлежит: SUMITOMO ELECTRIC SINTERED ALLOY, LTD

Provided is a method for manufacturing a sintered component having a hole formed therein, in which a sintered component having no defect, such as cracks, can be manufactured with good productivity and also a reduction in tool life accompanied by forming the hole can be suppressed. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a green body; a drilling step of forming a hole in the green body using a candle-type drill and thus forming a thin-walled portion, of which a thickness Gt as measured between an inner circumferential surface of the hole and an outer surface of the green body is smaller than a diameter Gd of the hole; and a sintering step of sintering the green body after the drilling step. 13-. (canceled)4. A sintered component having a hole formed therein , comprising:a thin-walled portion having a thickness St as measured between an inner circumferential surface of the hole and an outer surface of the sintered component smaller than a diameter Sd of the hole,wherein a shape of the inner circumferential surface of the hole is a satin finish shape.5. The sintered component according to claim 4 , wherein a ten point medial height Rz of the inner circumferential surface of the hole is 20 μm or more. The present invention relates to a method for manufacturing a sintered component and a sintered component. In particular, the present invention relates to a method for manufacturing a sintered component having a hole formed therein, in which a sintered component having no defect, such as cracks, can be manufactured with good productivity and also a reduction in tool life accompanied by forming the hole can be suppressed.Sintered bodies (sintered components) obtained by sintering green bodies made of a metal powder, such as an iron powder, are used for automobile parts or general machine parts. As kinds of machine parts, automobile parts, such as sprockets ...

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Номер записи: 89
20-08-2015 дата публикации

HIGH-DRAWABILITY STEEL WIRE WITH A PROPORTION BY MASS OF CARBON OF A VALUE WHICH IS GREATER THAN OR EQUAL TO 0.5% AND LESS THAN OR EQUAL TO 0.6%

Номер: US20150231926A1
Автор: Noel Sebastien, VERLEENE ARNAUD
Принадлежит:

The steel wire of diameter d expressed in mm, has a carbon content by weight C, expressed in %, such that 0.5%≦C≦0.6% and a maximum tensile strength R, expressed in MPa, such that R≧A·(920·C+500)/dwith A=1 and R≦2950 MPa. 112-. (canceled)14. The steel wire according to claim 13 , wherein 0.5%≦C<0.6%.15. The steel wire according to claim 14 , wherein 0.5% Подробнее

Номер записи: 90
11-08-2016 дата публикации

METHOD FOR THERMALLY TREATING RING-SHAPED MEMBER

Номер: US20160230244A1
Автор: HIRAOKA Tsuneaki, HIRAYAMA Eri, Suzuki Shintaro
Принадлежит:

When a plurality of outer rings (R) are sequentially and inductively heated to a target temperature by energizing a heating coil () elongated more than each of the plurality of outer rings (R), which are made of steel and retained coaxially by a retaining unit (), while relatively moving the outer rings (R) and the heating coil () in an axial direction, an output of the heating coil () is varied in consideration of the number of outer rings (R) present in an opposing region of the heating coil (). 1. A heat treatment method for a ring-shaped member , comprising a heating step of sequentially and inductively heating a plurality of ring-shaped members to a target temperature by energizing a heating coil elongated more than each of the plurality of ring-shaped members , which are made of steel and retained coaxially with each other , while relatively moving the plurality of ring-shaped members and the heating coil in an axial direction of the each of the plurality of ring-shaped members ,the heating step comprising varying an output of the heating coil in consideration of a number of ring-shaped members present in an opposing region of the heating coil.2. The heat treatment method for a ring-shaped member according to claim 1 , an output increasing step of increasing the output of the heating coil in a stepped manner; and', 'an output decreasing step of decreasing the output of the heating coil in a stepped manner., 'wherein the heating step comprises3. The heat treatment method for a ring-shaped member according to claim 2 , wherein an output increase pattern of the heating coil in the output increasing step and an output decrease pattern of the heating coil in the output decreasing step are different from each other.4. The heat treatment method for a ring-shaped member according to claim 1 , further comprising a cooling step of cooling the ring-shaped member inductively heated to the target temperature.5. The heat treatment method for a ring-shaped member according ...

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Номер записи: 91
11-08-2016 дата публикации

WIRE ROD COOLING DEVICE AND WIRE ROD COOLING METHOD

Номер: US20160230246A1
Автор: TSUKAKOSHI Kazumoto
Принадлежит: NIPPON STEEL & SUMITOMO METAL CORPORATION

A wire rod cooling apparatus that cools a wire rod wound in a ring shape by a wire rod winder while transferring the wire rod on a conveyor includes: a plurality of jet nozzles that are arranged along a width direction of the conveyor and jet coolant toward the wire rod; an imaging device that is provided on a transfer-line upstream side of a jet nozzle row composed of the plurality of jet nozzles and captures an image of the wire rod being transferred; and a control unit that extracts sparseness and denseness information and temperature information of the wire rod from the captured image. The control unit is configured to control a flow rate of coolant jetted from the jet nozzles individually for each jet nozzle on the basis of the sparseness and denseness information and the temperature information of the wire rod in conformity with a timing when a specified portion corresponding to the information arrives at the jet nozzle. 1. A wire rod cooling apparatus that cools a wire rod wound in a ring shape by a wire rod winder while transferring the wire rod on a conveyor , the wire rod cooling apparatus comprising:a plurality of jet nozzles that are arranged along a width direction of the conveyor and jet coolant toward the wire rod;an imaging device that is provided on a transfer-line upstream side of a jet nozzle row composed of the plurality of jet nozzles and captures an image of the wire rod being transferred; anda control unit that extracts sparseness and denseness information and temperature information of the wire rod from the captured image,wherein the control unit is configured to control a flow rate of coolant jetted from the jet nozzles individually for each jet nozzle on the basis of the sparseness and denseness information and the temperature information of the wire rod in conformity with a timing when a specified portion corresponding to the information arrives at the jet nozzle.2. The wire rod cooling apparatus according to claim 1 , wherein pressure is ...

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Номер записи: 92
09-08-2018 дата публикации

SINTERED BODY FOR FORMING A RARE-EARTH MAGNET AND RARE-EARTH SINTERED MAGNET

Номер: US20180221951A1
Автор: FUJIKAWA Kenichi, MATSUO Hiroshi, Okuno Toshiaki, Omure Tomohiro, Ozeki Izumi, YAMAGUCHI Miho
Принадлежит: NITTO DENKO CORPORATION

Provided is a heretofore non-existing, novel rare-earth sintered magnet having both of an extremely low carbon content and an extremely small average particle size of magnet material particles. The sintered body for forming a rare-earth magnet comprises a large number of magnet material particles sintered together, wherein each of the magnet material particles contains a rare-earth substance and has an easy magnetization axis. This sintered body for forming a rare-earth magnet has a carbon content of 500 ppm or less, and the magnet material particles have an average particle size of 2 μm or less. 1. A sintered body for forming a rare-earth magnet comprising a large number of magnet material particles sintered together , each of the magnet material particles containing a rare-earth substance and having an easy magnetization axis , whereinthe sintered body for forming a rare-earth magnet has a carbon content of 500 ppm or less; andthe magnet material particles have an average particle size of 2 μm or less.2. The sintered body for forming a rare-earth magnet as recited in claim 1 , wherein the magnet material particles have an aspect ratio of 2 or less.3. The sintered body for forming a rare-earth magnet as recited in claim 1 , wherein the sintered body for forming a rare-earth magnet has a unitary sintered structure claim 1 , and wherein the easy magnetization axes of the magnet material particles in arbitrary plural number of regions of the sintered structure are oriented in different directions respectively.4. A sintered body for forming a rare-earth magnet comprising a number of magnet material particles sintered together claim 1 , each of the magnet material particles containing a rare-earth substance and having an easy magnetization axis claim 1 , wherein:the sintered body for forming a rare-earth magnet has a unitary sintered structure, wherein the easy magnetization axes of the magnet material particles in arbitrary plural number of regions of the sintered ...

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Номер записи: 93
09-07-2020 дата публикации

METHOD FOR MONITORING QUALITY OF HOT STAMPED COMPONENTS

Номер: US20200215595A1
Автор: CHIRIAC Constantin, ENGLE James, Friedman Peter A., Sohmshetty Raj
Принадлежит:

A controller alters a cycle time of a die arrangement, configured to hot stamp metal into components and having an active cooling system, based on an amount of heat transferred from the components to the active cooling system such that a grain structure of the components transitions from an austenitic state to a martensitic state. 1. A hot stamping system comprising:a controller programmed to alter a cycle time of a die arrangement, configured to hot stamp metal into components and having an active cooling system, based on an amount of heat transferred from the components to the active cooling system such that a grain structure of the components transitions from an austenitic state to a martensitic state.2. The system of claim 1 , wherein altering the cycle time includes decreasing the cycle time in response to the amount exceeding a threshold amount.3. The system of claim 1 , wherein altering the cycle time includes increasing the cycle time in response to the amount being less than a threshold amount.4. The system of claim 1 , wherein altering the cycle time includes halting operation of the die arrangement.5. The system of claim 1 , wherein the amount is based on temperatures and inlet and outlet flow rates associated with the active cooling system.6. The system of claim 1 , wherein the amount is based on a temperature or change in temperature of the die arrangement.7. The system of claim 1 , wherein the amount is based on a temperature or change in temperature of the components.8. A hot stamping system comprising:a die arrangement including an active cooling system; anda controller programmed to close the die arrangement to hot stamp metal into a component, and in response to an amount of heat transferred from the component to the active cooling system exceeding a threshold amount indicative of a phase transformation of the component from austenite to martensite, to open the die arrangement.9. The system of claim 8 , wherein the controller is further programmed ...

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Номер записи: 94
09-07-2020 дата публикации

BED MEDIUM FOR FLUIDIZED BED

Номер: US20200217499A1
Автор: Aoyama Reiku, KAMEDA Takayuki, Makino Hiroshi, Okumura Yoji, SAKAMOTO Jun, Sato Shunichi
Принадлежит: ITOCHU CERATECH CORPORATION

Provided are: a useful bed medium for a fluidized bed with good fluidity, the bed medium being usable in a fluidized bed furnace using biomass material and coal material as fuel; and a useful bed medium for a fluidized bed with good durability, the bed medium not easily forming an agglomerate of its particles, and being resistant to collapsing. The bed medium for a fluidized bed in a fluidized bed furnace for combusting or gasifying the fuel is formed of artificially-produced spherical refractory particles containing not less than 40% by weight of Al2O3 and not more than 60% by weight of SiO2 and having an apparent porosity of not more than 5%, and a ratio by weight of agglomerated particles in the bed medium is not more than 20% after three heat treatment tests on the bed medium at 900° C. for 2 hours under coexistence with the fuel. 1. A bed medium for a fluidized bed , which medium is introduced into a fluidized bed furnace for combusting or gasifying fuel comprising biomass material and/or coal material , and is fluidized to form the fluidized bed within the furnace into which the fuel is to be fed , wherein:{'sub': 2', '3', '2, 'the bed medium is formed of artificially-produced spherical refractory particles having a chemical composition containing not less than 40% by weight of AlOand not more than 60% by weight of SiO;'}apparent porosity of the bed medium is not more than 5%; anda ratio by weight of agglomerated particles in the bed medium is not more than 20% after the bed medium has been subjected to a heat treatment test three times at a temperature of 900° C. for 2 hours under coexistence with the fuel.2. The bed medium for a fluidized bed according to claim 1 , wherein the refractory particles are mullite particles or mullite-corundum particles.3. The bed medium for a fluidized bed according to claim 1 , wherein the refractory particles have an apparent porosity of not more than 3.5%.4. The bed medium for a fluidized bed according to claim 1 , wherein ...

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Номер записи: 95
18-08-2016 дата публикации

APPARATUS FOR QUENCHING

Номер: US20160237516A1
Автор: Boukhchacha Abdallah, Fortin Rejean, Wang Yachoa
Принадлежит:

A quenching agent delivery apparatus is provided for delivering a quenching agent to a component to be quenched. The delivery apparatus comprises an inlet through which the quenching agent is configured to be delivered into the apparatus, a first outlet configured to deliver quenching agent in a first direction to an inner surface of the component, and a second outlet configured to deliver quenching agent in a second direction to an inner surface of the component. 1. A quenching agent delivery apparatus for delivering a quenching agent to a component to be quenched , wherein the apparatus is elongate and defines a longitudinal axis , the apparatus comprising:an inlet through which the quenching agent is configured to be delivered into the apparatus;a first outlet opposite the inlet and configured to deliver a first portion of the quenching agent in a first direction substantially along the longitudinal axis of the delivery apparatus to an inner surface of the component;a second outlet configured to deliver a second portion of the quenching agent in a second direction at an angle in the range of 45-90° relative to the longitudinal axis to an inner surface of the component; anda deflector located within the apparatus, between the inlet and the first and second outlets, the deflector comprising a deflector plate inclined at an angle of approximately 45° with respect to the longitudinal axis of the delivery apparatus, the deflector plate having at least one aperture arranged to allow a first portion of the quenching agent to flow beyond the deflector plate to the first outlet, the remainder of the deflector plate arranged to deflect a second portion of the of the quenching agent to the second outlet.2. (canceled)3. The quenching agent delivery apparatus according to claim 1 , wherein the at least one aperture is configured to allow between around 15 percent and 30 percent of quenching agent flowing into the apparatus via the inlet to be delivered to claim 1 , and exit ...

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Номер записи: 96
18-08-2016 дата публикации

METHOD FOR PRODUCING 7000-SERIES ALUMINUM ALLOY MEMBER EXCELLENT IN STRESS CORROSION CRACKING RESISTANCE

Номер: US20160237540A1
Автор: SHIKAMA Takahiro, Yoshihara Shinji
Принадлежит: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

The stress corrosion cracking resistance of an aluminum alloy member consisting of 7000-series aluminum alloy extruded shape is improved. At least one region of a quenched aluminum alloy extruded shape is subjected to a restoring treatment of heating at a temperature-raising rate of 0.4° C./second or more, holding at a temperature ranging 300 to 590° C. for a time longer than zero second and cooling at a cooling rate of 0.5° C./second or more. A plastic working is applied to the region within 72 hours. The region is subjected to a heat treatment of heating at a temperature-raising rate of 0.4° C./second or more, holding at a temperature ranging 300 to 590° C. for a time longer than zero second and not longer than 300 seconds and cooling at a cooling rate of 2000° C./minute or less. The whole of the aluminum alloy extruded shape is subjected to an artificial aging treatment. 1. A method for producing an aluminum alloy member consisting of a 7000-series aluminum alloy extruded shape excellent in stress corrosion cracking resistance , comprising:quenching the aluminum alloy extruded shape;subjecting the quenched aluminum alloy extruded shape to natural aging for 12 hours or longer;subjecting at least one region of the aluminum alloy extruded shape subjected to the natural aging to a restoring treatment of heating the region at a temperature-raising rate of 0.4° C./second or more, holding the region in a temperature range of 300 to 590° C. for a time longer than zero second and cooling the region at a cooling rate of 0.5° C./second or more;applying a plastic working to the region within 72 hours of the end of the restoring treatment;subjecting the region to a heat treatment of heating the region at a temperature-raising rate of 0.4° C./second or more, holding the region in a temperature range of 300 to 590° C. for a time longer than zero second and not longer than 300 seconds and cooling the region at a cooling rate of 2000° C./minute or less; andsubjecting the whole of ...

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Номер записи: 97
24-08-2017 дата публикации

METHOD FOR MONITORING QUALITY OF HOT STAMPED COMPONENTS

Номер: US20170239703A1
Автор: CHIRIAC Constantin, ENGLE James, Friedman Peter A., Sohmshetty Raj
Принадлежит:

A controller alters a cycle time of a die arrangement, configured to hot stamp metal into components and having an active cooling system, based on an amount of heat transferred from the components to the active cooling system such that a grain structure of the components transitions from an austenitic state to a martensitic state. 1. A hot stamping system comprising:a controller programmed to alter a cycle time of a die arrangement, configured to hot stamp metal into components and having an active cooling system, based on an amount of heat transferred from the components to the active cooling system such that a grain structure of the components transitions from an austenitic state to a martensitic state.2. The system of claim 1 , wherein altering the cycle time includes decreasing the cycle time in response to the amount exceeding a threshold amount.3. The system of claim 1 , wherein altering the cycle time includes increasing the cycle time in response to the amount being less than a threshold amount.4. The system of claim 1 , wherein altering the cycle time includes halting operation of the die arrangement.5. The system of claim 1 , wherein the amount is based on temperatures and inlet and outlet flow rates associated with the active cooling system.6. The system of claim 1 , wherein the amount is based on a temperature or change in temperature of the die arrangement.7. The system of claim 1 , wherein the amount is based on a temperature or change in temperature of the components.8. A hot stamping system comprising:a die arrangement including an active cooling system; anda controller programmed to close the die arrangement to hot stamp metal into a component, and in response to an amount of heat transferred from the component to the active cooling system exceeding a threshold amount indicative of a phase transformation of the component from austenite to martensite, to open the die arrangement.9. The system of claim 8 , wherein the controller is further programmed ...

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Номер записи: 98
23-08-2018 дата публикации

HIGH Al-CONTENT VIBRATION-DAMPING FERRITIC STAINLESS STEEL MATERIAL, AND PRODUCTION METHOD

Номер: US20180238410A1
Автор: HORI Yoshiaki, IMAKAWA Kazunari, Suzuki Satoshi
Принадлежит:

A ferritic stainless steel material excellent in vibration damping capability has a composition containing, by mass %, from 0.001 to 0.04% of C, from 0.1 to 2.0% of Si, from 0.1 to 1.0% of Mn, from 0.01 to 0.6% of Ni, from 10.5 to 20.0% of Cr, from 0.5 to 5.0% of Al, from 0.001 to 0.03% of N, from 0 to 0.8% of Nb, from 0 to 0.5% of Ti, from 0 to 0.3% of Cu, from 0 to 0.3% of Mo, from 0 to 0.3% of V, from 0 to 0.3% of Zr, from 0 to 0.6% of Co, from 0 to 0.1% of REM, from 0 to 0.1% of Ca, the balance of Fe and unavoidable impurities, and has ferrite single phase matrix with crystal grains of average crystal grain diameter of from 0.3 to 3.0 mm and a residual magnetic flux density of 45 mT or less. 1. A vibration-damping ferritic stainless steel material having a chemical composition containing , in terms of percentage by mass , from 0.001 to 0.04% of C , from 0.1 to 2.0% of Si , from 0.1 to 1.0% of Mn , from 0.01 to 0.6% of Ni , from 10.5 to 20.0% of Cr , from 0.5 to 5.0% of Al , from 0.001 to 0.03% of N , from 0 to 0.8% of Nb , from 0 to 0.5% of Ti , from 0 to 0.3% of Cu , from 0 to 0.3% of Mo , from 0 to 0.3% of V , from 0 to 0.3% of Zr , from 0 to 0.6% of Co , from 0 to 0.1% of REM (rare earth element) , from 0 to 0.1% of Ca , and the balance of Fe , with unavoidable impurities , having a metal structure containing a ferrite single phase as a matrix and ferrite crystal grains having an average crystal grain diameter of from 0.3 to 3.0 mm , and having a residual magnetic flux density of 45 mT or less.2. A production method for a vibration-damping ferritic stainless steel material , comprising subjecting a steel material having a chemical composition containing , in terms of percentage by mass , from 0.001 to 0.04% of C , from 0.1 to 2.0% of Si , from 0.1 to 1.0% of Mn , from 0.01 to 0.6% of Ni , from 10.5 to 20.0% of Cr , from 0.5 to 5.0% of Al , from 0.001 to 0.03% of N , from 0 to 0.8% of Nb , from 0 to 0.5% of Ti , from 0 to 0.3% of Cu , from 0 to 0.3% of Mo , ...

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Номер записи: 99
23-07-2020 дата публикации

METHOD AND FURNACE FOR THERMALLY TREATING A HIGH-RESISTANCE STEEL STRIP COMPRISING A TEMPERATURE HOMOGENISATION CHAMBER

Номер: US20200232063A1
Автор: Crutzen Jean-Pierre, KÜMMEL Lutz, Maschler Frank, RENARD Michel
Принадлежит: DREVER INTERNATIONAL

Method for thermally treating a scrolling steel strip (), said method comprising the following steps: heating the strip () in a zone for heating with a direct flame (); temperature homogenisation of the strip () in a homogenisation chamber () comprising at least one radiant heating tube (25), so as to homogenise the strip () in temperature after the passing thereof into the zone for heating with a direct flame () of the preceding step; oxidation of the strip () in an oxidation chamber () with an oxidising atmosphere having an oxygen volume concentration greater than %; reduction of the strip () in a reduction zone (). 1. A method for thermally treating a scrolling high-resistance steel strip , said method comprising the following steps:a) heating the strip in a zone for heating with a direct flame;b) temperature homogenisation of the strip in a homogenisation chamber comprising at least one radiant heating tube, so as to homogenise the strip in temperature after the passing thereof into the zone for heating with a direct flame of the preceding step;c) oxidation of the strip in an oxidation chamber with an oxidising atmosphere having an oxygen volume concentration greater than 1%;d) reduction of the strip in a reduction zone.2. The method according to claim 1 , wherein the reduction zone has a reducing atmosphere having a hydrogen volume concentration greater than 3%.3. The method according to claim 1 , wherein the oxidation step is carried out at a strip temperature of between 650° C. and 750° C.4. The method according to claim 1 , wherein said oxygen volume concentration is between 1.5% and 5% claim 1 , preferably between 2% and 5%.5. The method according to claim 1 , wherein the temperature homogenisation step is carried out at a strip temperature of between 650° C. and 750° C.6. The method according to claim 1 , wherein the heating step a) is carried out so as to obtain a strip temperature of between 650° C. and 750° C.7. The method according to claim 1 , wherein ...

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