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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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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 22565. Отображено 100.
12-01-2012 дата публикации

System and method for casting and rolling metal

Номер: US20120006502A1
Автор: Jörg BAUSCH, Lothar Fischer
Принадлежит: Sms Siemag AG

The invention essentially relates to a device and a method for casting and rolling metal, wherein at least one first and one second casting line for casting slabs and a rolling train for rolling the casted slabs are provided. The first casting line is designed as a horizontal thin-slab casting system ( 1 ) which comprises at least one dispensing vessel ( 5 ) for a melt and a conveyor belt ( 6 ) running horizontally downstream of the at least one dispensing vessel ( 5 ) in the casting direction. The second casting system is likewise designed as a horizontal thin-slab casting system ( 1 ) and/or as a vertical thin-slab casting system ( 2 ), which comprises at least one mold ( 4 ) for vertically casting slabs and a bending and straightening device ( 7 ) for bending and straightening the vertically casted slabs into a horizontal position. A rolling train ( 11 ) for rolling the casted slabs lies downstream of the at least two casting lines, and the at least two casting lines are designed such that the slabs, each of which is cast using one of the at least two casting lines, can be conveyed to the rolling train ( 11 ).

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Номер записи: 1
23-02-2012 дата публикации

Use of aluminum-zirconium-carbon intermediate alloy in wrought processing of magnesium and magnesium alloys

Номер: US20120043050A1
Автор: Jianguo Li, Qingdong Ye, Xuemin Chen, Yueming Yu
Принадлежит: Sun Xing Chemical and Metallurgical Materials (Shenzhen) Co Ltd

The present invention relates to the field of magnesium and magnesium alloy processing, and discloses a use of aluminum-zirconium-carbon (Al—Zr—C) intermediate alloy in wrought processing of magnesium and magnesium alloys, wherein the aluminum-zirconium-carbon intermediate alloy has a chemical composition of: 0.01% to 10% Zr, 0.01% to 0.3% C, and Al in balance, based on weight percentage; the wrought processing is plastic molding; and the use is to refine the grains of magnesium or magnesium alloys. The present invention further discloses the method for using the aluminum-zirconium-carbon (Al—Zr—C) intermediate alloy in casting and rolling magnesium and magnesium alloys. The present invention provides an aluminum-zirconium-carbon (Al—Zr—C) intermediate alloy and the use thereof in the plastic wrought processing of magnesium or magnesium alloys as a grain refiner. The aluminum-zirconium-carbon intermediate alloy has the advantages of great ability in nucleation and good grain refining effect, and achieves the continuous and large-scale production of wrought magnesium and magnesium alloy materials.

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Номер записи: 2
08-03-2012 дата публикации

Methods for making microreplication tools

Номер: US20120058310A1
Автор: Alan B. Campbell, Dale L. Ehnes, Mark E. Gardiner, Robert Lee Erwin
Принадлежит: 3M Innovative Properties Co

A method for cutting a pattern in a work piece ( 50 ), wherein the pattern includes adjacent features ( 52,53 ) separated by a pitch spacing P. The method includes providing a cutting tool assembly ( 74 ) having a first tool shank with a first cutting tip ( 22 ) to create a first feature ( 52 ) in the work piece ( 50 ) and a second tool shank with a second cutting tip ( 23 ) to create a second feature ( 53 ) in the work piece ( 50 ), wherein a distance Y between the first cutting tip and the second cutting tip is equal to nP, and wherein n is an odd integer greater than 1. The work piece is rotated (C) with respect to the cutting tool assembly ( 74 ), and the cutting tool is advanced along a lateral direction (B) with respect to the rotating work piece ( 50 ), wherein the cutting tool ( 74 ) is advanced along the lateral direction a distance of 2P for each rotation of the work piece ( 50 ).

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Номер записи: 3
15-03-2012 дата публикации

Ferromagnetic amorphous alloy ribbon with reduced surface protrusions, method of casting and application thereof

Номер: US20120062351A1
Автор: Daichi Azuma, Eric A. Theisen, James Perrozi, Ryusuke Hasegawa, Yuichi Ogawa, Yuji Matsumoto
Принадлежит: Hitachi Metals Ltd, Metglas Inc

A ferromagnetic amorphous alloy ribbon includes an alloy having a composition represented by Fe a Si b B c C d where 80.5≦a≦83 at. %, 0.5≦b≦6 at. %, 12≦c≦16.5 at. %, 0.01≦d≦1 at. % with a+b+c+d=100 and incidental impurities, the ribbon being cast from a molten state of the alloy with a molten alloy surface tension of greater than or equal to 1.1 N/m on a chill body surface; the ribbon having a ribbon length, a ribbon thickness, and a ribbon surface facing the chill body surface; the ribbon having ribbon surface protrusions being formed on the ribbon surface facing the chill body surface; the ribbon surface protrusions being measured in terms of a protrusion height and a number of protrusions; the protrusion height exceeding 3 μm and less than four times the ribbon thickness, and the number of protrusions being less than 10 within 1.5 m of the cast ribbon length; and the alloy ribbon in its annealed straight strip form having a saturation magnetic induction exceeding 1.60 T and exhibiting a magnetic core loss of less than 0.14 W/kg when measured at 60 Hz and at 1.3 T induction level in its annealed straight strip form. The ribbon is suitable for transformer cores, rotational machines, electrical chokes, magnetic sensors, and pulse power devices.

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Номер записи: 4
19-04-2012 дата публикации

Metallic Composite Material

Номер: US20120094146A1
Автор: Chenchung Steve Chang, Michael David Hardy
Принадлежит: EMS ENGINEERED MATERIALS SOLUTIONS LLC

A roll bonded, composite metallic material utilizing a Magnesium (Mg) core to take advantage of its extreme light weight. The clad composite consist of roll bonded metal layers such as Al, stainless steel, copper and titanium on the surfaces of Mg. A multitude of clad combinations are available to combine the unique surface properties of various alloys to suit the particular application or design needs, with the light weight and strength characteristics of Mg.

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Номер записи: 5
26-04-2012 дата публикации

Process for production of roughly shaped material for engine piston

Номер: US20120100385A1
Автор: Hideki Takemura, Hiroaki Murakami
Принадлежит: Showa Denko KK

A production method of a roughly shaped material for an engine piston includes a continuous casting step for obtaining a cast rod ( 31 ) having a diameter of 85 mm or less by continuously casting a molten aluminum alloy ( 30 ) at a molten alloy temperature of 720° C. or higher, and a forging step for obtaining a roughly shaped material ( 11 ) for an engine piston by forging a forging material ( 32 ) obtained by homogenizing the cast bar ( 31 ) at 370 to 500° C. A composition of the molten alloy ( 30 ) includes Si: 11.0 to 13.0 mass %, Fe: 0.6 to 1.0 mass %, Cu: 3.5 to 4.5 mass %, Mn: 0.25 mass % or less; Mg: 0.4 to 0.6 mass %, Cr: 0.15 mass % or less, Zr: 0.07 to 0.15 mass %, P: 0.005 to 0.010 mass %, Ca: 0.002 mass % or less, and the balance being Aluminum and inevitable impurities.

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Номер записи: 6
17-05-2012 дата публикации

Energy recovery in hot strip mills by converting the cooling heat of the continuous casting plant and the residual heat of slabs and coils into electrical enery or otherwise utilizing the captured process heat

Номер: US20120118526A1
Автор: Axel Stavenow, Horst Gaertner, Juergen Seidel, Peter Sudau
Принадлежит: Sms Siemag AG

In hot strip plants, after casting, the residual heat of a partial quantity of the slabs has hitherto been used such that the slabs either are directly rolled or are placed warm or hot in the furnace. The remaining slabs normally cool after casting in a hall through which flows air and are stacked before their further transport. The same applies to the residual heat present in the coils after winding, which often cool in the coil-storage area in air. The cooling energy of the continuous-casting plant likewise escapes unused into the surroundings. In order to convert this unused solidification heat and residual heat into electric energy, it is proposed according to the invention that the slabs ( 10 ) are cast in a continuous-casting plant and the slabs ( 10 ) or coils are transported into the slab-storage area ( 12 ) or coil-storage area and during the casting in heat exchangers ( 31 ) and/or during the transport in heat exchangers ( 31 ) heat is extracted and/or there are deposited in part one on top of the other in specially prepared storage areas ( 30 ) provided with heat exchangers ( 31 ) for a short time or several hours, wherein in this transport period the cast billet or the slab ( 10 ) and/or in the storage period the residual heat of the slabs ( 10 ) or coils is transferred via heat conduction and thermal radiation and convection via the heat exchangers ( 31 ) into a heat-transfer medium such as, for example, thermal oil, and heats it, which then is discharged via heat-transfer transport lines ( 33 ) for power generation and/or direct use of the process heat by other heat consumers.

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Номер записи: 7
31-05-2012 дата публикации

Thin cast strip product with microalloy additions, and method for making the same

Номер: US20120132323A1
Автор: Christopher Ronald Killmore, James Geoffrey Williams
Принадлежит: Nucor Corp

A steel product having, by weight, less than 0.25% carbon, between 0.20 and 2.0% manganese, between 0.05 and 0.50% silicon, aluminum 0.008% or less by weight, and at least one element selected from the group consisting of titanium between about 0.01% and about 0.20%, niobium between about 0.01% and about 0.20%, molybdenum between about 0.05% and about 0.50%, and vanadium between about 0.01% and about 0.20%, and having a microstructure comprised of a majority bainite, and fine oxide particles of silicon and iron distributed through the steel microstructure of average precipitate size less than 50 nanometers. The yield strength of the steel product may be at least 55 ksi (380 MPa) or the tensile strength of at least 500 MPa, or both. The steel product may have total elongation of at least 6% or 10%, and thickness less than 3.0 mm.

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Номер записи: 8
09-08-2012 дата публикации

Continuous casting sealing method

Номер: US20120199307A1
Автор: Kuang-O Yu, Michael P. Jacques
Принадлежит: RTI International Metals Inc

A casting furnace for manufacturing a metal casting comprises an interior chamber and a secondary chamber through which the metal casting passes from the interior chamber into external atmosphere. A seal along the secondary chamber surrounds and seals against the metal casting to separate the interior chamber from the external atmosphere in a manner which allows for an extended period of continuous casting. A force producing mechanism typically forces the seal against the metal casting. Multiple seals may be used sequentially to increase the duration of the sealing capability and the continuous casting process.

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Номер записи: 9
13-09-2012 дата публикации

Aluminium foil alloy

Номер: US20120230862A1
Автор: Andrew David Howells, Armelle Danielou, Florence Lauret, Hoellrigl Guenther
Принадлежит: Novelis Inc Canada

An aluminium alloy product having a gauge below 200 μm and a composition, in weight %, of Fe 1.0-1.8, Si 0.3-0.8, Mn up to 0.25, other elements less than or equal to 0.05 each and less than or equal to 0.15 in total, balance aluminium. A process of manufacturing the product includes the steps of continuous casting an aluminium alloy melt of the above composition, cold rolling the cast product without an interanneal step to a gauge below 200 μm and final annealing the cold rolled product. The product may be a deep drawn container.

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Номер записи: 10
11-10-2012 дата публикации

Continuous casting mold and continuous casting method of roud billet

Номер: US20120255700A1
Автор: Atsuhi Hirata, Hiroshi Hayashi, Manabu Adachi, Masahito Hanao, Masayuki Kawamoto, Yuichi Tsukaguchi
Принадлежит: Sumitomo Metal Industries Ltd

In a mold for casting a billet with a curved type continuous casting apparatus, D 0 (m) is an inner diameter at a lower mold edge and R 0 (m) is a curvature radius of an outer curvature side at the lower mold edge. When a rate of change Tp (%/m) in mold inner diameter per unit length along a casting direction is Tp=(1/D 0 )×(dD/dx)×100 (%/m), and when a rate of change Rp (%/m) in curvature radius of an outer curvature side per unit length along the casting direction is Rp=(1/R 0 )×(dR/dx)×100 (%/m), the rate of change Tp in mold inner diameter and the rate of change Rp in curvature radius satisfy a relationship expressed Rp=(Tp/2)×(D 0 /R 0 ), where D is a mold inner diameter at a distance x away from an upper mold edge and R in Formula 2 is a curvature radius of the outer curvature side at the distance x.

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Номер записи: 11
31-01-2013 дата публикации

Twin roll sheet casting of bulk metallic glasses and composites in an inert environment

Номер: US20130025746A1
Автор: Douglas C. Hofmann, Scott N. ROBERTS, William L. Johnson
Принадлежит: Apple Inc

Sheet casting of metallic glasses and twin roll sheet casting of bulk metallic glasses and composite in an inert environment. Samples may be heated by RF to a temperature in the semi-solid region. After semi-solid processing, the partial liquid then may be poured or injected to achieve the desired shape. Plates of metallic glasses and/or metallic glass matrix composites may be formed (for example, through diecasting) and serve as a pre-form for rolling. In this configuration, the plates may be lowered through a radio frequency coil into compressing wheels, directly next to or below the coil. As the plates pass through the coil they may heat to above the glass transition temperature. Next, they may be fed into the rolling wheel to thermoplasically form the plates into thinner sheets.

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Номер записи: 12
07-02-2013 дата публикации

Homogenization and heat-treatment of cast metals

Номер: US20130032305A1
Автор: Robert Bruce Wagstaff, Wayne J. Fenton
Принадлежит: Novelis Inc Canada

A method of casting a metal ingot with a microstructure that facilitates further working, such as hot and cold rolling. The metal is cast in a direct chill casting mold, or the equivalent, that directs a spray of coolant liquid onto the outer surface of the ingot to achieve rapid cooling. The coolant is removed from the surface at a location where the emerging embryonic ingot is still not completely solid, such that the latent heat of solidification and the sensible heat of the molten core raises the temperature of the adjacent solid shell to a convergence temperature that is above a transition temperature for in-situ homogenization of the metal. A further conventional homogenization step is then not required. The invention also relates to the heat-treatment of such ingots prior to hot working.

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Номер записи: 13
11-04-2013 дата публикации

MOLD, CASTING APPARATUS, AND METHOD FOR PRODUCING CAST ROD

Номер: US20130086947A1
Автор: HONDA Kazuyoshi, Kamiyama Yuma, Suetsugu Daisuke
Принадлежит: Panasonic Corporation

Arnold () includes a recessed portion () for receiving a melt (). The recessed portion () is constituted by an inner wall surface () for converting the melt () into a solidified portion when the inner wall surface () contacts the melt (), and opens in a withdrawal direction (D) of the solidified portion. A curved line formed by a first contour () and a second contour () has a cusp at a position of start points ( and ). The distance between the first contour () and the second contour () in a width direction (D) increases continuously from an upstream side to a downstream side of the withdrawal direction (D). The shape of the inner wall surface () of the recessed portion () is determined so that a cast rod () can be rotationally displaced clockwise or counterclockwise about an axis passing through a first end point () or a second end point () and perpendicular to a section of the mold 1. A mold for producing a cast rod of a material by feeding a melt of the material to the mold and while solidifying the fed material therein , withdrawing a solidified portion of the material , the mold comprising a recessed portion for receiving the melt , whereinthe recessed portion is constituted by an inner wall surface for converting the melt into the solidified portion when the inner wall surface contacts the melt, and opens in a withdrawal direction of the solidified portion,on a section of the recessed portion observed when the recessed portion is cut along a reference plane parallel to the withdrawal direction, the inner wall surface shows a first contour and a second contour each extending along the withdrawal direction,the first contour and the second contour are each constituted by a curved line,on the section, when (i) a direction perpendicular to the withdrawal direction is defined as a width direction, (ii) a most downstream position of the first contour in the withdrawal direction is defined as a first end point, (iii) a most downstream position of the second contour in ...

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Номер записи: 14
11-04-2013 дата публикации

TWIN ROLL CASTER AND METHOD OF CONTROL THEREOF

Номер: US20130087300A1
Автор: FUKASE Hisahiko, HIRATA Atsushi, NAKAYAMA Katsumi, OTSUKA Kiroyuki
Принадлежит: CASTRIP, LLC

Described herein is a twin roll caster including a pair of casting rolls arranged parallel to one another with a gap between the casting rolls and side dams parallel to one another forming a pool between the casting rolls and side dams. A side dam support is provided that applies a compression force on at least one of the side dams at a compression angle relative to the axis of the casting rolls. 1. A twin roll caster comprising:a pair of counter-rotatable casting rolls having casting surfaces laterally positioned to form a nip there between through which thin cast strip can be cast, and supporting a casting pool of molten metal on the casting surfaces above the nip;a pair of side dams positioned to engage end portions of the casting rolls adjacent the nip to laterally confine said casting pool; anda side dam support applying a compression force against at least one of said side dams at an upward angle between 15° and 45° relative to an axis of said casting rolls.2. The twin roll caster as claimed in where during operation said side dam is worn by said end surfaces of said casting rolls to form a slantwise groove in the side dam.3. The twin roll caster as claimed in where the slantwise groove is in the form of V-shaped arcuate grooves.4. The twin roll caster as claimed in where said side dam support comprises a lateral pushing apparatus for pushing said side dam against said end surfaces and a vertical pushing apparatus for adjusting the height of said lateral pushing apparatus and the lateral pushing apparatus and the vertical pushing apparatus are adapted to operate at the same time.5. The twin roll caster as claimed in further comprising in addition a control device adapted to control said vertical pushing device and said lateral pushing device to provide a target compression angle.6. The twin roll caster as claimed in where said side dam support comprises a slantwise pushing apparatus for pushing said side dam against said end surfaces of the casting roll at a ...

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Номер записи: 15
11-04-2013 дата публикации

COMPOSITE MATERIAL, PART FOR CONTINUOUS CASTING, CONTINUOUS CASTING NOZZLE, CONTINUOUS CASTING METHOD, CAST MATERIAL, AND MAGNESIUM ALLOY CAST COIL MATERIAL

Номер: US20130089457A1
Автор: Kawabe Nozomu, Miyanaga Michimasa, Numano Masatada, Oishi Yukihiro, Uchihara Takeshi
Принадлежит: Sumitomo Electric Industries Ltd

Provided is a composite material suitable for forming a part for continuous casting capable of producing cast materials of excellent surface quality for a long period of time and with which a molten metal is inhibited from flowing into a gap between a nozzle and a moving mold. 1. A composite material that constitutes at least part of a part for continuous casting used in continuous casting of a molten metal of pure magnesium or a magnesium alloy , the composite material comprising:a porous body having pores; anda filler incorporated in at least part of a portion that comes into contact with the molten metal, the portion being part of a surface portion of the porous body, wherein the filler contains at least one selected from a nitride, a carbide, and carbon as a main component.2. The composite material according to claim 1 , further comprising:a coating layer on a surface of the porous body in the portion where the filler is incorporated,wherein the coating layer contains at least one selected from a nitride, a carbide, and carbon as a main component.3. The composite material according to claim 2 , wherein the coating layer contains alumina as a component other than the main component.4. The composite material according to claim 2 , wherein the coating layer has a relative density of 30% or more and 95% or less.5. The composite material according to claim 2 , wherein the coating layer has a thickness of 200 μm or more.6. The composite material according to claim 2 , wherein the coating layer is a layer formed by fixing a powder to a surface of the porous body by a heat treatment.7. The composite material according to claim 1 , wherein the porous body has a flexural modulus of 90 GPa or less.8. The composite material according to claim 1 , wherein the porous body has a heat conductivity of 15 W/m·K or more in a plane direction of the porous body.9. A part for continuous casting used in continuously casting pure magnesium or a magnesium alloy claim 1 ,{'claim-ref': ...

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Номер записи: 16
18-04-2013 дата публикации

CASTING THIN STRIP AND DELIVERY NOZZLE THEREFOR

Номер: US20130092343A1
Автор: FUKASE Hisahiko, MAHAPATRA Rama Ballav
Принадлежит: NUCOR CORPORATION

A method of casting metal strip and equipment therefor where an elongated metal delivery nozzle extending along in a continuous caster with at least one segment having a main portion adapted to deliver molten metal in the casting pool above the nip along the metal delivery nozzle and an end portion adjacent side dams having a reservoir portion with first and second pairs of passages adapted to deliver molten metal into a molten metal pool adjacent the side dams while shells are forming on the casting rolls. The first pair of passages adapted to deliver molten metal into the casting pool adjacent the side dams, and the second pair of passages adapted to deliver molten metal into the casting pool adjacent the molten metal from the first pair of passages adjacent the side dams to inhibit formation of skulls during the formation of the cast strip during a casting campaign. 1. A method of casting metal strip comprising:(a) assembling a pair of casting rolls laterally disposed to form a nip between them and between side dams adapted to maintain a molten metal pool supported by the casting rolls,(b) assembling an elongated metal delivery nozzle extending along and above the nip with at least one segment having a main portion adapted to deliver molten metal in the casting pool along the metal delivery nozzle and an end portion adjacent each side dam having a reservoir portion having a first pair and a second pair of passages adapted to deliver molten metal into a molten metal pool adjacent the side dams while shells are forming on the casting rolls, the first pair of passages adapted to deliver molten metal into the casting pool adjacent the side dams and the second pairs of passages adapted to deliver molten metal into the casting pool adjacent molten metal delivered from the first pair of passages,(c) introducing molten metal through the elongated metal delivery nozzle to form a casting pool of molten metal supported on the casting rolls above the nip, and through the ...

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Номер записи: 17
16-05-2013 дата публикации

CASTING THIN STRIP AND DELIVERY NOZZLE THEREFOR

Номер: US20130119094A1
Автор: FUKASE Hisahiko, MAHAPATRA Rama Ballav
Принадлежит: NUCOR CORPORATION

A method of casting metal strip and equipment therefor where an elongated metal delivery nozzle extending along in a continuous caster with at least one segment having a main portion adapted to deliver molten metal in the casting pool above the nip along the metal delivery nozzle and an end portion adjacent side dams having a reservoir portion with first and second passages adapted to deliver molten metal into a molten metal pool adjacent the side dams while shells are forming on the casting rolls. The first passages are adapted to deliver molten metal shallowly into the casting pool adjacent the side dams, and the second passages adapted to deliver molten metal deeper into the casting pool than the first passages adjacent the side dams to inhibit formation of skulls during the formation of the cast strip during a casting campaign. 1. A method of casting metal strip comprising:(a) assembling a pair of casting rolls laterally disposed to form a nip between them and between side dams adapted to maintain a molten metal pool supported by the casting rolls,(b) assembling an elongated metal delivery nozzle extending along and above the nip with at least one segment having a main portion adapted to deliver molten metal in the casting pool along the metal delivery nozzle and an end portion adjacent side dams having a reservoir portion having first and second passages adapted to deliver molten metal into a molten metal pool adjacent the side dams while shells are forming on the casting rolls, the first passages adapted to deliver molten metal shallowly into the casting pool adjacent the side dams and the second passages adapted to deliver molten metal deeper into the casting pool than the first passages adjacent the side dams,(c) introducing molten metal through the elongated metal delivery nozzle to form a casting pool of molten metal supported on the casting rolls above the nip, and through the first and second passages in the reservoir portion in the end portions into the ...

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Номер записи: 18
16-05-2013 дата публикации

Martensitic Stainless Steel and Production Method Therefor

Номер: US20130122320A1
Автор: Chae Dong-Chul, Jo Ki-Hoon, Kwon Joon-In, Park Mi-Nam, Seok Jong-Heon, Song Byoung-Jun
Принадлежит: POSCO

A martensitic stainless steel for use in tableware, knives, scissors and the like, containing in % by weight, 0.10 to 0.50% carbon and 11 to 16% chromium, and a production method therefore. A production method for mid-carbon martensitic stainless steel in a strip-casting device comprising a pair of rolls rotating in opposite directions, edge dams respectively provided to both sides of the rolls so as to form a molten steel pool, and a meniscus shield for supplying inert nitrogen gas to the upper surface of the molten steel pool, wherein a stainless-steel thin sheet is produced by supplying a molten stainless steel of the above composition to the molten steel pool via a nozzle from a tundish, and a hot-rolled annealed strip is produced to a rolling reduction of 5 to 40% using in-line rollers, and relates to martensitic stainless steel produced by the production method 1. A production method for a martensitic stainless steel , wherein , in a strip-casting device comprising a pair of rolls rotating in opposite directions , edge dams respectively provided to both sides of the rolls so as to form a molten steel pool , and a meniscus shield for supplying inert nitrogen gas to the upper surface of the molten steel pool , a stainless-steel thin sheet is produced by supplying a molten stainless steel containing , as percentages by weight , 1.10 to 0.50% carbon and 11 to 16% chromium , to the molten steel pool via a nozzle from a tundish , and a hot-rolled annealed strip is produced to a rolling reduction of 5 to 40% using in-line rollers.2. The production method of claim 1 , wherein the martensitic stainless steel contains claim 1 , as percentages by weight claim 1 , 0.1 to 1.0% silicon (Si) claim 1 , 0.1 to 1.0% manganese (Mn) claim 1 , over 0 to 0.1% nickel (Ni) claim 1 , over 0 to 0.04 sulfur (S) claim 1 , and over 0 to 0.05 phosphorus (P) claim 1 , and Fe and other unavoidable impurities as remnants.3. The production method of claim 1 , wherein a hot-rolled annealed ...

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Номер записи: 19
23-05-2013 дата публикации

METHOD OF CONTINUOUS CASTING THIN STEEL STRIP

Номер: US20130126120A1
Автор: DENO Alan J., McQuillis Gary, NOONING Robert, Panda Dhiren, Ross Neil, Schlichting Mark, WOOLEY Leigh
Принадлежит: NUCOR CORPORATION

A method of continuously casting metal strip having the steps of assembling a pair of counter-rotatable casting rolls, assembling a metal delivery system adapted to deliver molten metal above the nip to form a casting pool, the casting pool forming a meniscus with each casting surface of the casting rolls, delivering a shell thickness controlling gas to select areas within 300 mm of end portions of at least one casting roll downwardly toward the meniscus between the casting pool and the casting surface adapted to control thickness of the metal shell, and control attenuation of the casting roll, and sensing the temperature and thickness profiles of the cast strip downstream from the nip to determine high or low temperature areas of the cast strip within 300 mm of the end portions and causing the gas to be delivered to the high or low temperature areas to change the thickness of the metal shell. 1. A method of continuously casting metal strip comprising:assembling a pair of counter-rotatable casting rolls having casting surfaces laterally positioned to form a gap at a nip between casting rolls through which thin cast strip can be cast,assembling a metal delivery system adapted to deliver molten metal above the nip to form a casting pool supported on the casting surfaces of the casting rolls and confined at the ends of the casting rolls, the casting pool forming a meniscus with each casting surface of the casting rolls, and counter rotating the casting rolls to form metal shells on the casting surfaces of the casting rolls that are brought together at the nip to deliver cast strip downwardly from the nip.delivering a shell thickness controlling gas to select areas within 300 mm of end portions of at least one casting roll downwardly toward the meniscus between the casting pool and the casting surface of the casting roll selected to control thickness of the metal shell, andsensing the temperature and thickness profiles of the cast strip downstream from the nip to ...

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Номер записи: 20
23-05-2013 дата публикации

METHOD OF CONTINUOUS CASTING THIN STEEL STRIP

Номер: US20130126121A1
Автор: DENO Alan J., MCQUILLILS Gary, NOONING Robert, Panda Dhiren, Ross Neil, Schlichting Mark, WOOLEY Leigh
Принадлежит: NUCOR CORPORATION

In a twin roll continuous caster, the formation of skulls in the triple point region, the heat flux between the molten metal in the casting pool and the surfaces of the casting rolls, and consequently the casting speed and strip thickness, are controlled by controlling the level of carbon dioxide to at least 20% present in the casting area atmosphere above the casting pool supported on the casting surfaces of counter-rotating casting rolls. The carbon dioxide level in casting area may be more than 40%, 50%, 60%, 75% or 90%. The gas mixture in the casting area above the casting pool may be more than 0.05% free oxygen. 1. A method of casting thin strip comprising the steps of:assembling a pair of counter-rotating casting rolls laterally forming a nip between circumferential casting surfaces of the rolls through which the metal strip may be cast;assembling a metal delivery system above the casting rolls delivering molten metal forming a casting pool supported on the casting surfaces of the casting rolls above the nip;providing above the casting pool an enclosure forming a casting area above the casting rolls;delivering a gas mixture comprising at least 20% carbon dioxide to the casting area restricting ingress of air into the enclosure; andcounter-rotating the casting rolls such that the casting surfaces of the casting rolls each travel inwardly toward the nip to produce a cast strip downwardly from the nip.2. The method of casting thin strip as claimed in wherein the gas mixture in the casting area above the casting pool comprises more than 0.05% free oxygen.3. The method of casting thin strip as claimed in wherein the gas mixture comprises more than 40% carbon dioxide.4. The method of casting thin strip as claimed in wherein the gas mixture comprises more than 50% carbon dioxide.5. The method of casting thin strip as claimed in wherein the gas mixture comprises more than 60% carbon dioxide.6. The method of casting thin strip as claimed in wherein the gas mixture ...

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Номер записи: 21
06-06-2013 дата публикации

CONTINUOUS CASTING DEVICE AND RELATIVE METHOD

Номер: US20130139993A1
Автор: Benedetti Gianpietro, Bobig Paolo, Carboni Andrea
Принадлежит: DANIEL & C. OFFICINE MECCANICHE SPA

A continuous casting device including at least a crystallizer suitable for casting a metal product, and a plurality of guide and containing segments with rolls, the function of which is to accompany the cast product exiting from the crystallizer. The device includes, an extension of or in an intermediate position to one or more of the guide and containing segments with rolls, one or more guide and containing segments of the mixed type with panels and rolls, each including one or more guide rolls disposed on at least one side of the product and insulated and/or reflecting and/or heated panels disposed on the opposite side of the product, so as to reduce the loss of temperature of the cast product in transit. 1. Continuous casting device , comprising at least a crystallizer suitable for casting a metal product , and a plurality of guide and containing segments with rolls , the function of which is to accompany the cast product exiting from the crystallizer , wherein it comprises , in extension of or in an intermediate position to one or more of said guide and containing segments with rolls , one or more guide and containing segments of the mixed type with panels and rolls , each comprising one or more guide rolls disposed on at least one side of the product and at least one panel selected from the group consisting of insulated , reflecting and heated panels disposed on the opposite side of the product , so as to reduce the loss of temperature of the cast product in transit.2. Continuous casting device as in claim 1 , wherein each of said mixed guide and containing segments with rolls and panels comprises claim 1 , on one side claim 1 , at least one panel selected from the group consisting of a first insulated claim 1 , reflecting and heated panel at entry claim 1 , at least an intermediate roll claim 1 , and at least a second panel at exit from the segment.3. Continuous casting device as in claim 2 , wherein the side of the panels facing toward the intermediate roll ...

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Номер записи: 22
13-06-2013 дата публикации

Method of manufacturing aluminum-containing composition and product made from such composition

Номер: US20130146188A1
Автор: Zi Shen Lei
Принадлежит: Individual

The present invention is concerned with a method of manufacturing an aluminum-containing composition, wherein the composition having substantially 0.4 wt % silicon, 0.7 wt % iron, 0.2 wt % copper, 0.1 wt % manganese, 1.1-1.8 wt % magnesium, 0.1 wt % chromium, 0.25 wt % zinc and 96.45-97.15 wt % aluminum, or being Aluminum 5050 as defined by the International Alloy Designations and Chemical Composition Limits for Wrought Aluminum and Wrought Aluminum Alloys of the Aluminum Association. The method comprises a casting step, an extrusion step, and an anodizing step.

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Номер записи: 23
13-06-2013 дата публикации

Roller device

Номер: US20130146244A1
Автор: Hovestaedt Erich, Jonen Peter, Middeldorf Helge, Olgemoeller Ingo
Принадлежит: SMS SIEMAG AKTIENGESELLSCHAFT

The invention relates to a roller device (), in particular for forming a strand guiding section () of a casting machine, comprising a cross beam () and at least one roller element () supported on the cross beam () by means of roller bearings (), wherein guiding means for at least three different media are provided in the cross beam (). 1110030102022. Roller device () , in particular for forming strand-guiding segments () of a caster , comprising a cross-beam () and at least one roller element () supported on the cross-beam by roller bearings ( , ) ,characterized in that{'b': 310', '320', '330', '340', '350', '30, 'conduct elements (, , , , ) for at least three different media are provided in the cross-beam (), and'}wherein the roller device is mountable in a frame of a caster, advantageously in a segment frame, as a pre-assembled module.2120222022342352. Roller device () according to claim 1 , wherein a conduit element is provided claim 1 , respectively claim 1 , for conducting at least one of the following media: cooling medium for cooling the roller bearings ( claim 1 , ) claim 1 , cooling medium for inner cooling of the roller claim 1 , lubricant medium for lubrication of the roller bearings ( claim 1 , ) claim 1 , cooling medium for secondary cooling claim 1 , hydraulic medium for a hydraulic control circuit () claim 1 , compressed air medium for a pneumatic control circuit claim 1 , power medium for an electrical power supply claim 1 , power medium for electrical control signals claim 1 , power medium for electrical measurement signals claim 1 , power medium for optical measurement signals or electrical and/or optical bus system ().3110030102022. Roller device () claim 1 , in particular claim 1 , for forming strand-guiding segments () of a caster claim 1 , comprising a cross-beam () and at least one roller element () supported on the cross-beam by roller bearings ( claim 1 , ) claim 1 ,characterized in that{'b': 30', '310', '320', '330', '340', '350', '342', ' ...

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Номер записи: 24
13-06-2013 дата публикации

CASTING DELIVERY NOZZLE

Номер: US20130146245A1
Автор: Fulbright Eric, KEOWN Kevin, McQuillis Gary
Принадлежит:

In a twin roll continuous caster, the casting nozzle in the continuous casting apparatus is arranged such that the outlet passages and/or tapered walls in the main portion within the casting nozzle provide flow of molten metal downwardly converging toward the nip between the casting rolls of a twin roll caster. The casting nozzle having a reservoir portion for directing molten metal converging toward the triple point region to inhibit the washing of shells forming on the casting surfaces of the casting rolls. 1. A method of continuously casting metal strip comprising:(a) assembling a pair of casting rolls laterally disposed to form a nip between them and to maintain a casting pool of molten metal supported by the casting rolls between the side dams, a main portion having one or more outlets positioned longitudinally along the elongated metal delivery nozzle and adapted to deliver molten metal downwardly converging toward the nip while forming the casting pool supported on the casting rolls above the nip, and', 'an end portion adjacent a side dam having a reservoir portion having at least one pair of passages adapted to deliver molten metal into the casting pool adjacent the side dams the flow from the at least one pair of passages converging beneath the reservoir portion,, '(b) assembling an elongated metal delivery nozzle extending along and above the nip, the delivery nozzle having one or more segments extending longitudinally along the metal delivery nozzle, each segment having(c) delivering molten metal from a metal delivery system to the main portion of the segments to deliver molten metal through the one or more outlets converging downwardly toward the nip while forming the casting pool of molten metal supported on the casting rolls above the nip, and through the at least one pair of passages in the reservoir portion in the end portions into the casting pool adjacent the side dams, and(d) counter-rotating the casting rolls to form shells on the casting ...

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Номер записи: 25
04-07-2013 дата публикации

CONTINUOUS CASTING SEALING METHOD

Номер: US20130168037A1
Автор: JACQUES MICHAEL P., Yu Kuang-O
Принадлежит: RTI International Metals, Inc.

A casting furnace for manufacturing a metal casting comprises an interior chamber and a secondary chamber through which the metal casting passes from the interior chamber into external atmosphere. A seal along the secondary chamber surrounds and seals against the metal casting to separate the interior chamber from the external atmosphere in a manner which allows for an extended period of continuous casting. A force producing mechanism may force the seal against the metal casting. Multiple seals may be used sequentially to increase the duration of the sealing capability and the continuous casting process. Inert gas sensors may detect loss of inert gas from the interior chamber. 1. A method comprising the steps of:forming an ingot in an interior chamber defined by a sidewall;directing the ingot from the interior chamber into a secondary chamber;providing a first backing member which is movable relative to the sidewall and in contact with a compressible first seal; andapplying a first force to the first backing member to force the first seal against the ingot along the secondary chamber.2. The method of wherein the step of applying comprises applying the first force hydraulically or pneumatically.3. The method of wherein the step of applying comprises applying the first force with a force producing mechanism which comprises a cylinder in which a piston is slidably received.4. The method of wherein the step of applying comprises applying the first force with a force producing mechanism which comprises a threaded rod which threadedly engages a threaded hole wherein rotation of the threaded rod causes movement the first backing member.5. The method of further comprising the steps ofproviding a second backing member which is movable relative to the sidewall and in contact with the first seal; andapplying a second force to the second backing member to force the first seal against the ingot along the secondary chamber.6. The method of wherein the step of applying the second ...

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Номер записи: 26
04-07-2013 дата публикации

FREE CASTING METHOD, FREE CASTING APPARATUS, AND CASTING

Номер: US20130171021A1
Автор: Amano Norihiro, Iwahori Hiroaki, Iwata Yasushi, Kobayashi Takehito, SUGIYAMA Yoshio, UENO Noriyuki, YAOKAWA Jun
Принадлежит:

A free casting method according to the present invention includes, a lead-out step for leading out molten metal from a lead-out area provided in a source of supply, e.g. a surface level of the molten metal, to retain the molten metal temporarily by surface films generated on an outer surface, and a forming step for obtaining a formed body by solidifying retained molten metal led out along a set passage depending on a desired casting shape, wherein the retained molten metal is solidified after being formed into the desired casting shape by applying an external force thereto at positions between an unrestrained root portion of the retained molten metal in vicinity of the surface level of the molten metal and a solidification interface defined as a boundary between the retained molten metal and the formed body in the forming step. 1. A free casting method which is capable of obtaining castings without using casting moulds , including:a lead-out step for leading out molten metal from its surface level to retain itself temporarily by a surface film generated on an outer surface or surface tension, in which the molten metal is supplied to retained molten metal through the surface level; anda forming step for obtaining a formed body by solidifying the retained molten metal led out along a set passage depending on a desired casting shape,wherein the retained molten metal is solidified after being formed into the desired shape by applying an external force thereto at positions between an unrestrained root portion of the retained molten metal in vicinity of the surface level of the molten metal and a solidification interface defined as a boundary between the retained molten metal and the formed body in the forming step.2. The free casting method as claimed in claim 1 , wherein the lead-out step includes a step of bringing an inducing body having a solid provided for inducing a basic shape of the casting into contact with the surface of the molten metal.3. The free casting ...

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Номер записи: 27
11-07-2013 дата публикации

METHOD AND APPARATUS FOR CONTROLLING VARIABLE SHELL THICKNESS IN CAST STRIP

Номер: US20130174995A1
Автор: MAHAPATRA Rama Ballav, MCGAUGHEY David W., ONDROVIC Jay Jon, Patterson Tim, SCHUEREN Mike
Принадлежит: NUCOR CORPORATION

Apparatus and method for continuously casting metal strip includes a pair of casting rolls having casting surfaces with a center portion, edge portions each having average surface roughness between 3 and 7 Ra, and intermediate portion between each edge portion and the center portion, the center portion average surface roughness between 1.2 and 4.0 times the edge portion surface roughness, and the intermediate portions average surface roughness between that of the edge and center portions. The surface roughness of the center portion is tapered across its width, and may be tapered across its width is in stepped zones. The center portion may have surface roughness varied across the surface to correspond to a desired variation in metal shell thickness across the cast strip. The center portion may be at least 60% of the casting roll width, and each edge portion may be up to 7% of the casting roll width. 1. An apparatus for continuously casting metal strip comprising:a pair of counter-rotatable casting rolls each having casting surfaces with a center portion of at least 60% of the width of the casting rolls, two edge portions each of up to 7% of the width of the casting rolls, and at least one intermediate portion between each edge portion and the center portion, each edge portion having an average surface roughness between 3 and 7 Ra, the center portion having an average surface roughness between 1.2 and 4.0 times the surface roughness of the edge portions, and the intermediate portions having an average surface roughness between average surface roughness of the edge portions and the center portion, and laterally positioned to form a gap at a nip between the casting surfaces of the casting rolls through which thin cast strip can be cast,a metal delivery system adapted to deliver molten metal above the nip to form a casting pool supported on the casting surfaces of the casting rolls and confined at the edges of the casting rolls, anda drive system adapted to counter- ...

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Номер записи: 28
25-07-2013 дата публикации

METHOD OF CONTINUOUSLY CASTING THIN STRIP

Номер: US20130186586A1
Автор: Edwards James D., McQuillis Gary, Panda Dhiren, Ross Neal, Woolley Leigh
Принадлежит: NUCOR CORPORATION

A method of continuously casting steel including steps of forming a casting pool of molten steel comprising a carbon content of less than 0.5% by weight on casting surfaces of a pair of internally cooled casting rolls having a nip formed between them, counter rotating the casting surfaces of the casting rolls toward each other to produce a cast steel strip moving downwardly away from the nip between the casting rolls, guiding the cast strip through a first enclosure adjacent the casting rolls as the strip moves away from the casting rolls, the first enclosure having a reducing atmosphere containing carbon monoxide and optionally hydrogen of at least 0.1%, establishing the reducing atmosphere in the first enclosure to control ingress of atmospheric air so as to maintain said atmosphere with a CO to COratio of at least 1.5 during steady state operation. 1. A method of continuously casting steel comprising:(a) forming a casting pool of molten steel comprising a carbon content of less than 0.5% by weight on casting surfaces of a pair of internally cooled casting rolls having a nip formed between them,(b) counter rotating the casting surfaces of the casting rolls toward each other to produce a cast steel strip moving downwardly away from the nip between the casting rolls,(c) guiding the cast strip through a first enclosure adjacent the casting rolls as the strip moves away from the casting rolls, the first enclosure having a reducing atmosphere containing carbon monoxide of at least 0.1% and optionally hydrogen of at least 0.1%,{'sub': '2', '(d) establishing said reducing atmosphere in the first enclosure during steady state operation to control ingress of atmospheric air so as to maintain said atmosphere in the first enclosure with a CO to COratio of at least 1.5.'}2. The method of continuously casting steel as claimed in where the reducing atmosphere in the first enclosure also contains argon with an Oto Ar ratio of less than 18 during steady state operation.3. The ...

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Номер записи: 29
25-07-2013 дата публикации

STRIP CASTING APPARATUS FOR RAPID SET AND CHANGE OF CASTING ROLLS

Номер: US20130186587A1
Автор: Fulbright Eric, NAKAYAMA Katsumi, ONDROVIC Jay Jon
Принадлежит: NUCOR CORPORATION

A method of continuously casting steel strip includes steps of providing rails positioned beneath a casting position and extending in opposite directions there from to discharge stations, supporting first and second scrap receptacles movable along the rails, engaging a seal between the first scrap receptacle and an enclosure enabling support of a protective atmosphere beneath a pair of casting rolls, disengaging the seal between the first scrap receptacle and the enclosure and moving the first scrap receptacle along the rails in a direction away from the second scrap receptacle to a discharge station, and moving the second scrap receptacle into the casting position and sealingly engaging the second scrap receptacle and the enclosure.

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Номер записи: 30
08-08-2013 дата публикации

HOT ROLLED THIN CAST STRIP PRODUCT AND METHOD FOR MAKING THE SAME

Номер: US20130202914A1
Автор: EDELMAN Daniel Geoffrey, KILLMORE Christopher Ronald
Принадлежит:

A hot rolled steel strip made by the steps including assembling a twin roll caster, forming a casting pool of molten steel of such composition that the cast strip produced comprises by weight, greater than 0.25% and up to 1.1% carbon, between 0.40 and 2.0% manganese, between 0.05 and 0.50% silicon, less than 0.01% aluminum, counter rotating the casting rolls to solidify metal shells and forming a steel strip, hot rolling the steel strip such that mechanical properties at 10% and 35% reduction are within 10% for yield strength, tensile strength and total elongation, and coiling the hot rolled steel strip at a temperature between 550 and 750° C. to provide a majority of the microstructure comprising pearlite, along with bainite and acicular ferrite. The steel may have a free oxygen content between 5 and 50 ppm or between 25 and 45 ppm. 1. A hot rolled steel strip made by the steps comprising:assembling an internally cooled roll caster having laterally positioned casting rolls forming a nip between them, and forming a casting pool of molten steel supported on the casting rolls above the nip and confined adjacent the ends of the casting rolls by side dams, the molten steel of such composition that hot rolled thin cast strip produced has a composition comprising by weight, greater than 0.25% and up to 1.1% carbon, between 0.5 and 2.0% manganese, between 0.05 and 0.50% silicon, less than 0.01% aluminum,counter rotating the casting rolls to solidify metal shells on the casting rolls as the casting rolls move through the casting pool, andforming from the metal shells downwardly through the nip between the casting rolls a steel strip,hot rolling the steel strip such that mechanical properties at 10% and 35% reduction are within 10% for yield strength, tensile strength and total elongation; andcoiling the hot rolled steel strip at a temperature between 550 and 750° C. to provide a majority of the microstructure comprising pearlite, along with bainite and acicular ferrite in ...

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Номер записи: 31
15-08-2013 дата публикации

Lubricating compositions for continuous casting processes and methods for making and using same

Номер: US20130206353A1
Автор: Riccardo Carli
Принадлежит: PROSIMET SpA

Lubricating compositions for use in the casting of steel, in particular in continuous casting processes are provided. Methods for making and using such compositions are also provided.

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Номер записи: 32
29-08-2013 дата публикации

Stent wires, and method for manufacturing such stent wires and stents

Номер: US20130226282A1
Автор: Hyun-Hwa Kwon, Sae-Young Ahn
Принадлежит: MEDISOURCEPLUS CO Ltd

A method for manufacturing stent wires includes preparing three or more annular stent wires which has alternately arranged peaks and valleys, interconnecting the first and second stent wires, such that predetermined peaks of the second stent wire are caught in predetermined valleys of the first stent wire, passing a valley of a third stent wire below a free valley of the first stent wire and a free peak of the second stent wire, and interconnecting the third and second stent wires such that a peak of the third stent wire is caught in a valley of the second stent wire. The stent wires are connected in a stacked manner, thereby simplifying the manufacturing process, lengthening the lifespan of the stent wires, and improving the strength of the connection between two adjacent stent wires.

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Номер записи: 33
19-09-2013 дата публикации

Ultra-thin slab or thick-strip casting

Номер: US20130240170A1
Автор: James B. Sears, Jr.
Принадлежит: Individual

A system of twin-roll casting an ultra-thin slab or thick-strip of metal with a liquid core still present inside the hollow shell of the casting as it exits the nip of the opposing counter rotating casting rolls. The wide sides of the cast shell are formed against a recessed casting surface on each roll and the narrow end walls of the shell are formed against the tapered ends of the recessed area so one half of the narrow end wall is formed on each roll and the two halves are joined together at the nip to form the full perimeter of the metal casting. A liquid-cooled copper mold liner provides continued support to each of the four sides of the casting below the twin-rolls and contact with those chilled copper mold liners continues to remove heat from the liquid core of the casting enabling the shell to continue growing in thickness. As the casting exits the mold it will be of adequate thickness to pass through opposing pairs of support rolls below the mold without bulging where water sprays can provide the additional cooling needed for final and complete solidification. A variation of this system uses one or more separating dams to cast different metals or different alloys of the same metal to integrally cast a dual-layer or multi-layer ultra-thin slab or thick strip of metal with a thin metal layer on one or both of the wide and narrow end casting surfaces.

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Номер записи: 34
26-09-2013 дата публикации

Method of and apparatus for casting metal slab

Номер: US20130248137A1
Автор: Edwin Stanley Luce, Kevin Michael Gatenby
Принадлежит: Novelis Inc Canada

Embodiments of the invention relate to a method and apparatus for continuously casting a metal slab. The method involves continuously introducing molten metal into an inlet of a casting cavity defined between advancing casting surfaces, cooling the metal in the cavity to form a metal slab, and discharging the slab from the cavity through an outlet. The casting surfaces have an ability to remove heat from the metal but this ability is reduced, thus reducing heat flux, for at least one of the casting surfaces in a region of the cavity spaced from both the inlet and the outlet and extending transversely to the casting direction. This reduced ability to remove heat is relative to such ability of the casting surface in immediately adjacent upstream and downstream regions of the cavity. The apparatus may be a twin belt caster or other form of continuous caster modified to perform the method.

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Номер записи: 35
03-10-2013 дата публикации

Electromagnetic casting method and apparatus for polycrystalline silicon

Номер: US20130255315A1
Автор: Koichi MAEGAWA, Mitsuo Yoshihara, Tomohiro Onizuka
Принадлежит: Sumco Corp

Disclosed is an electromagnetic casting method of polycrystalline silicon which is characterized in that polycrystalline silicon is continuously cast by charging silicon raw materials into a bottomless cold mold, melting the silicon raw materials using electromagnetic induction heating, and pulling down the molten silicon to solidify it, wherein the depth of solid-liquid interface before the start of the final solidification process is decreased by reducing a pull down rate of ingot in a final phase of steady-state casting. By adopting the method, the region of precipitation of foreign substances in the finally solidified portion of ingot can be reduced and cracking generation can be prevented upon production of a polycrystalline silicon as a substrate material for a solar cell.

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Номер записи: 36
03-10-2013 дата публикации

CASTING EQUIPMENT STARTER BLOCK

Номер: US20130255904A1
Автор: Chandia Muhammad Umar Farooq, JR. Harald, Næss, Røen Geir
Принадлежит:

Equipment for the semi-continuous direct chill (DC) casting of sheet ingot or slabs of different dimensions, in particular for rolling purposes. The equipment includes a mould frame () with a pair of facing long side walls () and a pair of facing short end walls () where the walls define an upwardly open inlet for the supply of metal and a downwardly facing outlet. The outlet is provided with a starter block () on a movable support which prior to each casting closes the opening. The equipment in dudes means for changing the mould dimensions where at least one end wall can be displaced to enable casting of ingots with different sizes, The equipment further includes means for indirect and direct cooling of the metal during casting, and optionally means for flexing of the long side walls of the mould to compensate for shrinkage of the metal during casting, The starter block () is provided with short end and long end walls () whereof at least one short end wall () is movably provided in relation to the mould and thereby may be adjusted to the desired ingot mould dimension prior to casting. 17-. (canceled)8. Equipment for the semi-continuous direct chill casting of sheet ingot or slabs of different dimensions , in particular for rolling purposes , including a mold frame with a pair of facing long side walls and a pair of facing short end walls , the walls defining an upwardly open inlet for the supply of metal and a downwardly facing outlet provided with a starter block on a movable support which prior to each casting closes the opening and including means for changing the mold dimensions where at least one end wall can be displaced to enable casting of ingots with different sizes ,the equipment further including means for indirect and direct cooling of the metal during casting, and optionally means for flexing of the long side walls of the mold to compensate for shrinkage of the metal during casting,wherein the starter block includes short end and long end walls whereof ...

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Номер записи: 37
24-10-2013 дата публикации

MOULD FOR THE CONTINUOUS CASTING OF METALS

Номер: US20130277006A1
Автор: Lorento Donald Peter
Принадлежит: KME Germany GmbH & Co. KG

A continuous casting mould for casting a strand of metal includes a sidewall having an inner circumference to define a mould cavity which has a pouring opening for liquid metal and an outlet opening for a cast strand. The mould cavity has a cross section sized to correspond to a basic shape of the cast strand. The sidewall is provided with a profiling in the form of a corrugation that extends in a casting direction and forms grooves extending in substantial parallel relationship from the pouring opening to the outlet opening of the mould cavity. A ratio of the inner circumference of the mould cavity to a width of each of the grooves is greater than 30, and the width of the groove is in the range of 1.5 mm to 30 mm. 1. A continuous casting mould for casting a strand of metal , comprising a sidewall having an inner circumference to define a mould cavity which has a pouring opening for liquid metal and an outlet opening for a cast strand , said mould cavity having a cross section sized to correspond to a basic shape of the cast strand , said sidewall being provided with a profiling that extends in a casting direction and is configured as a corrugation to form grooves extending in substantial parallel relationship from the pouring opening to the outlet opening of the mould cavity , wherein a ratio of the inner circumference of the mould cavity to a width of each of the grooves is greater than 30 , and wherein the width of the groove is in the range of 1.5 mm to 30 mm.2. The continuous casting mould of claim 1 , wherein the width of the groove is in the range of 2 mm to 15 mm.3. The continuous casting mould of claim 1 , wherein the width of the groove is in the range of 4.5 mm to 13 mm.4. The continuous casting mould of claim 1 , wherein the groove has a depth that increases continuously from a border of the groove to a center of the groove.5. The continuous casting mould of claim 1 , wherein the grooves are of sinusoidal shape in cross-section.6. The continuous casting ...

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Номер записи: 38
07-11-2013 дата публикации

STEEL SHEET FOR CAN HAVING HIGH STRENGTH AND HIGH FORMABILITY, AND METHOD FOR MANUFACTURING THE SAME

Номер: US20130294963A1
Автор: Iwasa Hiroki, Kojima Katsumi, Tada Masaki, Tanaka Takumi, Tobiyama Yoichi
Принадлежит: JFE STEEL CORPORATION

A steel sheet is provided containing C: 0.070% or more and less than 0.080%, Si: 0.003% or more and 0.10% or less, Mn: 0.51% or more and 0.60% or less, wherein the average grain size is 5 μm or more, the grain elongation rate is 2.0 or less, the difference in hardness is 10 points or more and/or 20 points or more depending on how it is determined, the tensile strength is 500 MPa or more, and the elongation after fracture is 10% or more. 1. A high-strength high-formability steel sheet for a can , the steel sheet comprising C: 0.070% or more and less than 0.080% , Si: 0.003% or more and 0.10% or less , Mn: 0.51% or more and 0.60% or less , P: 0.001% or more and 0.100% or less , S: 0.001% or more and 0.020% or less , Al: 0.005% or more and 0.100% or less , N: 0.010% or less , and the remainder composed of Fe and incidental impurities , on a percent by mass basis , wherein in a cross-section in the rolling direction , the average grain size is 5μm or more , the grain elongation rate is 2.0 or less , the difference in hardness determined by subtracting an average Vickers hardness of a cross-section between the surface and a depth of one-eighth of the sheet thickness from an average Vickers hardness of a cross-section between a depth of three-eighths of the sheet thickness and a depth of four-eighths of the sheet thickness is 10 points or more and/or the difference in hardness determined by subtracting a maximum Vickers hardness of a cross-section between the surface and a depth of one-eighth of the sheet thickness from a maximum Vickers hardness of a cross-section between a depth of three-eighths of the sheet thickness and a depth of four-eighths of the sheet thickness is 20 points or more , the tensile strength is 500 MPa or more , and the elongation after fracture is 10% or more.2. The high-strength high-formability steel sheet for a can claim 1 , according to claim 1 , wherein the difference in average grain size determined by subtracting an average grain size between ...

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Номер записи: 39
14-11-2013 дата публикации

HOT ROLLED THIN CAST STRIP PRODUCT AND METHOD FOR MAKING THE SAME

Номер: US20130302644A1
Автор: ALWIN-BECKER Mary E., EDELMAN Daniel Geoffrey, KILLMORE Christopher Ronald
Принадлежит: NUCOR CORPORATION

A hot rolled steel strip made by the steps including assembling a twin roll caster, forming a casting pool of molten steel having a free oxygen content between 20 and 75 ppm and having a composition such that the cast strip comprises by weight, greater than 0.1 and not more than 0.5% carbon, between 0.9 and 2.0% manganese, between 0.05 and 0.50% silicon, greater than 0.01% and less than or equal to 0.15% phosphorus, and less than 0.01% aluminum, counter rotating the casting rolls forming the steel strip, hot rolling the strip such that mechanical properties at 10% and 35% reduction are within 10% for yield strength, tensile strength and total elongation, and coiling the strip at a temperature between 300 and 700° C. to provide a majority of the microstructure comprising bainite and acicular ferrite. Alternatively, the steel may have between 0.20 and 0.60% copper and manganese as low as 0.08%. 1. A hot rolled steel strip made by the steps comprising:assembling an internally cooled roll caster having laterally positioned casting rolls forming a nip between them, and forming a casting pool of molten steel supported on the casting rolls above the nip and confined adjacent the ends of the casting rolls by side dams, the molten steel having a free oxygen content between 20 and 75 ppm and having a composition such that hot rolled thin cast strip produced has a composition comprising, by weight, less than 0.5% carbon, between 0.9% and 2.0% manganese, between 0.05% and 0.50% silicon, greater than 0.01% and less than or equal to 0.15% phosphorus, and less than 0.01% aluminum,counter rotating the casting rolls to solidify metal shells on the casting rolls as the casting rolls move through the casting pool,forming a steel strip from the metal shells downwardly through the nip between the casting rolls,hot rolling the steel strip such that mechanical properties at 10% and 35% reduction are within 10% for yield strength, tensile strength and total elongation; andcoiling the hot ...

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Номер записи: 40
21-11-2013 дата публикации

Bulk amorphous alloy sheet forming processes

Номер: US20130306201A1
Автор: Christopher D. Prest, Joseph C. Poole, Joseph STEVICK, Quoc Tran Pham, Theodore Andrew WANIUK
Принадлежит: Apple Inc, Crucible Intellectual Property LLC

Embodiments herein relate to a method for forming a bulk solidifying amorphous alloy sheets have different surface finish including a “fire” polish surface like that of a float glass. In one embodiment, a first molten metal alloy is poured on a second molten metal of higher density in a float chamber to form a sheet of the first molten that floats on the second molten metal and cooled to form a bulk solidifying amorphous alloy sheet. In another embodiment, a molten metal is poured on a conveyor conveying the sheet of the first molten metal on a conveyor and cooled to form a bulk solidifying amorphous alloy sheet. The cooling rate such that a time-temperature profile during the cooling does not traverse through a region bounding a crystalline region of the metal alloy in a time-temperature-transformation (TTT) diagram.

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Номер записи: 41
21-11-2013 дата публикации

Martensitic Stainless Steel Highly Resistant to Corrosion, and Method for Manufacturing Same

Номер: US20130309126A1
Автор: Chae Dong-Chul, Jo Ki-Hoon, Kim Bong-Wn, Son Won-Qeun
Принадлежит: POSCO

Provided is a martensitic stainless steel having excellent productivity and high corrosion resistance, which comprises, as percentages by weight, 0.45 to 0.60% carbon, 0.02 to 0.08% nitrogen, 0.2 to 0.4% silicon, 0.3 to 0.6% manganese, 12 to 15% chrome, one or more kinds of 0.1 to 1.5% molybdenum or 0.1 to 1.5% tungsten and Fe and other unavoidable impurities as remnants. 1. A high corrosion resistance martensitic stainless steel comprising , as percentages by weight , 0.45 to 0.60% carbon , 0.02 to 0.08% nitrogen , 0.2 to 0.4% silicon , 0.3 to 0.6% manganese , 12 to 15% chrome , 0.1 to 1.5% molybdenum , balance Fe and other unavoidable impurities.2. A high corrosion resistance martensitic stainless steel comprising , as percentages by weight , 0.45 to 0.60% carbon , 0.02 to 0.08% nitrogen , 0.2 to 0.4% silicon , 0.3 to 0.6% manganese , 12 to 15% chrome , 0.1 to 1.5% tungsten tungsten , balance Fe and other unavoidable impurities.3. A high corrosion resistance martensitic stainless steel comprising , as percentages by weight , 0.45 to 0.60% carbon , 0.02 to 0.08% nitrogen , 0.2 to 0.4% silicon , 0.3 to 0.6% manganese , 12 to 15% chrome , 0.1 to 1.5% molybdenum and 0.1 to 1.5% tungsten , balance Fe and other unavoidable impurities.4. The stainless steel of claim 1 , wherein the final heat-treatment hardness of the stainless steel is within a range of 500 to 750 Hv.5. The stainless steel of claim 1 , wherein the pitting resistance equivalent number (PREN) of the stainless steel has 15 or more by the following Formula 1;{'br': None, 'PREN=% Cr+3.3(% Mo+0.5% W)+16% N. \u2003\u2003Formula 1'}6. The stainless steel of claim 1 , wherein the stainless steel comprising claim 1 , as percentages by weight claim 1 , 0.5 to 0.60% carbon.7. The stainless steel of claim 1 , wherein the Charpy impact energy of a material hot-rolled through batch annealing is 6 J or more at a thickness of 4 mm or more.8. A production method for a high corrosion resistance martensitic stainless steel ...

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Номер записи: 42
05-12-2013 дата публикации

CRYSTALLIZER FOR CONTINUOUS CASTING

Номер: US20130319629A1
Автор: Ansoldi Marco, Bazzarp Gianluca, De Luca Andrea
Принадлежит: DANIELI & C. OFFICINE MECCANICHE SPA

Crystallizer for continuous casting, having a monolithic structure defined by lateral walls in the thickness of which channels () are made in which a cooling liquid flows. The channels () are geometrically sized so as to define, in a zone substantially astride the meniscus (M), an increased transit speed of the cooling liquid, wherein by increased speed it is intended that in at least some of the cooling channels () the speed of transit of the cooling liquid is greater in the zone astride the meniscus (M) compared with a zone below or above said zone astride the meniscus (M). 1. A crystallizer for continuous casting , having a monolithic structure defined by lateral walls in the thickness of which channels are made in which a cooling liquid flows , wherein the channels are geometrically sized so as to define , in a zone substantially astride the meniscus , and in any case comprising said meniscus , an increased transit speed of the cooling liquid , wherein by increased speed it is intended that in at least some of the cooling channels the speed of transit of the cooling liquid is greater in said zone astride the meniscus compared to a zone below said zone astride the meniscus , wherein said channels comprise , in said zone astride the meniscus , a plurality of first channels having a larger diameter , and a plurality of second channels having a smaller diameter defining a reduced passage section of the cooling liquid with respect the passage section defined by the first channels having a larger diameter , wherein said second channels having a smaller diameter are , disposed alternate between said first channels having a larger diameter , while in said zone below said zone astride the meniscus , there are only said first channels having a larger diameter.2. The crystallizer as in claim 1 , wherein the channels have a first smaller diameter claim 1 , and therefore a reduced passage section claim 1 , to define said second channels in a zone of the crystallizer astride ...

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Номер записи: 43
09-01-2014 дата публикации

Method for Producing a Hot-Rolled Flat Steel Product

Номер: US20140007992A1
Автор: Evgeny BALICHEV, Harald Hofmann, Jian Bian
Принадлежит: THYSSENKRUPP STEEL EUROPE AG

A method for generating a flat steel product comprising the steps of: melting a steel melt, comprising, in addition to Fe and unavoidable impurities (in wt %) C: 0.5-1.3%, Mn: 18-26%, Al: 5.9-11.5%, Si: <1%, Cr: <8%, Ni: <3%, Mo: <2%, N: <0.1%, B: <0.1%, Cu: <5%, Nb: <1%, Ti: <1%, V: <1%, Ca: <0.05%, Zr: <0.1%, P: <0.04%, S: <0.04%; casting the steel melt into a cast strip; heating the cast strip to an initial hot-rolling temperature of 1100-1300° C. at a heating rate of at least 20 K/s; hot rolling the cast strip into a hot strip; cooling the hot strip within 10 seconds after the hot rolling at a cooling rate of at least 100 K/s to <400° C.; and winding the cooled hot strip into a coil at a coiling temperature of up to 400° C.

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Номер записи: 44
09-01-2014 дата публикации

SIDE DAM WITH INSERT

Номер: US20140008032A1
Автор: DENO Alan J., MAHAPATRA Rama Ballav, ONDROVIC Jay Jon, Schlichting Mark
Принадлежит: NUCOR CORPORATION

A composite side dam for a continuous twin roll caster includes a substrate made of a refractory material capable of withstanding casting temperature and having edge portions adapted to engage casting rolls and having a nip portion adjacent a nip between casting rolls and upper portions extending across the side dam to form a lateral restraint for a casting pool, an insert of at least 10 mm in thickness positioned in a pocket in the substrate and extending to engage the molten metal and extending from the upper portions of the substrate and positioned in the pocket to within 30 mm from the nip portion by insertion adjacent the upper portions of the substrate, and the insert adapted to fit into the pocket of the substrate to form a side dam formed of a refractory material having consumption rate less than 10 mm per hour. The material forming the insert may be between 40 and 60% SiAlON material and the remainder hBN material, or mullite material as described by FIG. or between about 60 and 63 mole percent AlOand the remainder SiO, or fused silica, such as between 40 and 60% fused SiOand the remainder hBN material. 1. A composite side dam for a continuous twin roll caster comprising:(a) a substrate shaped to form a side dam and made of a refractory material capable of withstanding casting temperature in a twin roll caster and having edge portions adapted to engage end portions of casting rolls and having a nip portion adapted to be adjacent a nip between casting rolls and upper portions extending across the side dam to form a lateral restraint for a casting pool of molten metal during operation in a twin roll caster,(b) an insert of at least 10 mm in thickness positioned in a pocket in the substrate and extending to engage the molten metal in operation of a twin roll caster and extending from the upper portions of the substrate such that the insert can be positioned in the pocket to within 30 mm from the nip portion of the substrate by insertion adjacent the upper ...

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Номер записи: 45
16-01-2014 дата публикации

HIGH STRENGTH THIN CAST STRIP PRODUCT AND METHOD FOR MAKING THE SAME

Номер: US20140014238A1
Автор: BLEJDE Walter N., CAMPBELL Peter C., CARPENTER Kristin R., CLUFF Scott, EDELMAN Daniel Geoffrey, KILLMORE Christopher R.
Принадлежит: NUCOR CORPORATION

A steel product or thin steel cast strip including, by weight, less than 0.25% carbon, between 0.20 and 2.0% manganese, between 0.05 and 0.50% silicon, less than 0.01% aluminum, niobium between 0.01% and 0.20%, and vanadium between 0.01% and 0.20%. The steel product may have a tensile strength of between 550 and 600 MPa after age hardening at a peak temperature of between 700 and 750° C. 1. An age hardened steel product comprising , by weight , less than 0.25% carbon , between 0.20 and 2.0% manganese , between 0.05 and 0.50% silicon , less than 0.01% aluminum , at least one element from the group consisting of niobium between about 0.01% and about 0.20% , vanadium between about 0.01% and about 0.20% , and having a tensile strength of at least 550 MPa after age hardening at a peak temperature of between 700 and 750° C.2. The age hardened steel product of where the tensile strength is between 550 and 600 MPa.3. A method of preparing a thin cast steel strip comprising the steps of:(a) assembling an internally cooled roll caster having laterally positioned casting rolls forming a nip between them, and forming a casting pool of molten steel supported on the casting rolls above the nip and confined adjacent the ends of the casting rolls by side dams,(b) counter rotating the casting rolls to solidify metal shells on the casting rolls as the casting rolls move through the casting pool,(c) forming steel strip from the metal shells cast downwardly through the nip between the casting rolls having a composition comprising by weight, less than 0.25% carbon, less than 0.01% aluminum, and at least one element from the group consisting of niobium between about 0.01% and about 0.20%, vanadium between about 0.01% and about 0.20%, and(d) age hardening the steel strip at a peak temperature between 700° C. and 750° C. for a duration of between 9 and 11 seconds to form an age hardened thin cast steel strip having a tensile strength of at least 550 MPa.4. The method of where the tensile ...

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Номер записи: 46
30-01-2014 дата публикации

Titanium slab for hot rolling use and method of production of same

Номер: US20140027024A1
Автор: Hideki Fujii, Kazuhiro Takahashi, Tomonori Kunieda, Yoshitsugu Tatsuzawa
Принадлежит: Individual

A titanium slab for hot rolling comprised of a titanium slab obtain by smelting commercially pure titanium, wherein even if the breakdown process is omitted, the strip shaped coil after hot rolling is excellent in surface properties and a method of smelting that titanium slab are provided. The titanium slab according to the present invention is a titanium slab for hot rolling obtained by smelting commercially pure titanium including the β phase stabilizing element Fe, wherein the formation of coarse β phases is suppressed by making the average Fe concentration down to 10 mm from the surface layer of the surface which corresponds to at least the rolling surface of the titanium slab 0.01 mass % or less. A titanium slab obtained by smelting commercially pure titanium can be obtained by cooling until the surface becomes the β transformation point or less, then reheating it to the β transformation point or more, and gradually cooling from the slab surface layer.

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Номер записи: 47
20-02-2014 дата публикации

CASTING PLATE AND CASTING PLATE CASING WITH DETECTOR-ENGAGING PROTRUSION

Номер: US20140048225A1
Автор: Boisdequin Vincent, Collura Mariano
Принадлежит: VESUVIUS GROUP S.A.

Casting plates constructed for facing the casting orifice of a metallurgical vessel are provided with a metallic casing. The casting plates and metallic casing are provided with a protrusion configured to interact with a detector. The casing has a main surface with an opening, and two substantially longitudinal bearing surfaces. The protrusion extends from the casing in a direction substantially parallel to the longitudinal bearing surfaces. The protrusion is formed by a ramp having an inclined portion. 1. Metallic casing for encasing a refractory thus forming a casting plate , the metallic casing comprising:a main surface comprising an opening and side edges extending to said main surface and defining the perimeter thereof;two bearing surfaces substantially longitudinal and configured to slide along the guiding means of the device,a detector-engaging protrusion projecting from the main surface and extending in the plate sliding direction, the sliding direction being substantially parallel with the longitudinal bearing surfaces, and being located outside of said bearing surfaces, said protrusion being formed by a ramp comprising an inclined portion, the inclination being in the plate sliding direction.2. The casing of claim 1 , wherein the protrusion is situated on only one side of the metallic casing.3. The casing of claim 1 , comprising two protrusions wherein each protrusion is situated on either side of the metallic casing claim 1 , symmetrically in relation to the longitudinal axis of said casing.4. The casing of claim 1 , wherein claim 1 ,the casing comprises two pairs of opposed side edges as follows: two longitudinal edges and two transverse edges, wherein the two segments respectively parallel to the transverse edges and the longitudinal edges of the casing and comprising the centre of the opening divide the casing into four quadrants (1, 2, 3, 4); two quadrants (3, 4) extending from the opening center in one direction parallel to the sliding direction ...

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Номер записи: 48
20-02-2014 дата публикации

Continuous Casting of Lead Alloy Strip for Heavy Duty Battery Electrodes

Номер: US20140048226A1
Автор: Rossi Jeffrey A., Seymour Theodore J.
Принадлежит: MITEK HOLDINGS, INC.

An apparatus for direct casting of strip from a pool of molten metal includes a tundish having a feed chamber, a return chamber and a diverting chamber. A lip insert is inserted into the tundish and has an open front for cooperation with a casting surface. The apparatus includes means for controlling the surface level of the pool of molten metal in the diverting chamber and in the lip insert, and means for moving the casting surface upwardly through the pool of molten metal for the casting of metal on the casting surface. The casting surface is an aluminum surface of a cylindrical drum and has a coarse irregular surface formed thereon by biasing with crushed, angular silicon carbide or aluminum silicate. 110-. (canceled)11. In an apparatus for direct casting of strip from a pool of molten metal in a tundish onto a chilled casting surface adjacent thereto on substantially the upper half of a rotatable casting drum having cooling passages for the flow of cooling water therethrough , comprising: a tundish including a feed chamber , a return chamber and a diverting chamber having passageways communication said chambers in sequence , said tundish having an open front in proximity to a substantially vertical portion of the casting surface , a lip insert formed from graphite having a floor and opposed sidewalls adapted to be inserted into the tundish adjacent the tundish open front , said lip insert having an open front defined by the lip insert floor and sidewalls for cooperation with the casting surface to contain a pool of said molten metal having a surface level within the lip insert , said pool being in pressure communication with the diverting chamber whereby the surface level of the pool in the lip insert is the same as a surface level of molten metal in the diverting chamber , means for controlling the surface level of the pool of said molten metal in the diverting chamber to control the surface level in the lip insert , and means for moving the chilled casting ...

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Номер записи: 49
13-03-2014 дата публикации

Molding device for continuous casting equipped with agitator

Номер: US20140069602A1
Автор: Kenzo Takahashi
Принадлежит: Individual

There is provided a molding device for continuous casting equipped with an agitator that reduces the amount of generated heat, is easy to carry out maintenance, is inexpensive, and is easy to use in practice. The molding device for continuous casting equipped with an agitator of the invention receives liquid-phase melt of a conductive material, and a solid-phase cast product is taken out from the molding device through the cooling of the melt. The molding device includes a casting mold and an agitator provided so as to correspond to the casting mold. The casting mold includes a casting space that includes an inlet and an outlet at a central portion of a substantially cylindrical side wall, and a magnetic field generation device receiving chamber that is formed in the side wall and is positioned outside the casting space. The casting mold receives the liquid-phase melt from the inlet into the casting space and discharges the solid-phase cast product from the outlet through the cooling in the casting space. The agitator includes a magnetic field generation device having an electrode unit that includes first and second electrodes supplying current to at least the liquid-phase melt present in the casting space, and a permanent magnet that applies a magnetic field to the liquid-phase melt. The magnetic field generation device is received in the magnetic field generation device receiving chamber of the casting mold, generates magnetic lines of force toward a center in a lateral direction, makes the magnetic lines of force pass through a part of the side wall of the casting mold and reach the casting space, and applies lateral magnetic lines of force, which cross the current, to the melt.

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Номер записи: 50
13-03-2014 дата публикации

METHOD FOR PRODUCING MICROALLOYED TUBULAR STEEL IN COMBINED CASTING-ROLLING INSTALLATION AND MICROALLOYED TUBULAR STEEL

Номер: US20140072824A1
Автор: LINZER Bernd, RIMNAC Axel
Принадлежит: Siemens VAI Metals Technologies GmbH

A method allows microalloyed tubular steel to be produced economically, with operational reliability and with high quality. 1. A method for producing microalloyed tubular steel in a combined casting-rolling installation using a continuous casting machine featuring a mold and a strand guide , a single-stand or multi-stand roughing train , an induction furnace , a descaling device , a multi-stand finishing train , a cooling section and a storage device , said method comprising:casting a steel melt in the mold to form a partially solidified thin slab strand, the steel melt consisting of 0.04-0.05% C, 1.3-1.5% Mn, 0.035-0.05% Nb, 0.035-0.06% V, 0.2-0.4% Cr, 0.2-0.3% Si, 0.015-0.05% Al and <0.008% N in percent by weight, the remainder consisting of Fe and unavoidable impurities;deflecting the partially solidified thin slab strand into a curved strand guide;supporting, guiding and cooling the thin slab strand in the curved strand guide;deflecting the thin slab strand into a horizontal strand guide, the thin slab strand solidifying totally either in the curved strand guide or in the horizontal strand guide to form an uncut thin slab strand;roughing the uncut thin slab strand to form a rough strip in the roughing train, the uncut thin slab strand having a core temperature at least 50° C. higher than a surface temperature of the uncut thin slab strand when the uncut thin slab strand enters the roughing train, the thin slab strand roughed in the roughing train by a total reduction factor of at least 40% with complete static recrystallization of the microstructure occurring during the roughing;reheating the rough strip in the induction furnace to an average rough strip temperature of greater than 1000° C. to produce a reheated rough strip;descaling the reheated rough strip in the descaling device to produce a descaled rough strip;finish-rolling the descaled rough strip in a first group of rolling stands of the finishing train to form a partially finish-rolled rough strip ...

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Номер записи: 51
10-04-2014 дата публикации

METHOD OF AND APPARATUS FOR CASTING METAL SLAB

Номер: US20140096929A1
Автор: Gatenby Kevin Michael, Luce Edwin Stanley
Принадлежит: Novelis Inc.

Embodiments of the invention relate to a method and apparatus for continuously casting a metal slab. The method involves continuously introducing molten metal into an inlet of a casting cavity defined between advancing casting surfaces, cooling the metal in the cavity to form a metal slab, and discharging the slab from the cavity through an outlet. The casting surfaces have an ability to remove heat from the metal but this ability is reduced, thus reducing heat flux, for at least one of the casting surfaces in a region of the cavity spaced from both the inlet and the outlet and extending transversely to the casting direction. This reduced ability to remove heat is relative to such ability of the casting surface in immediately adjacent upstream and downstream regions of the cavity. The apparatus may be a twin belt caster or other form of continuous caster modified to perform the method. 1. A method of continuously casting a metal slab , comprising:a. continuously introducing molten metal into an inlet of a casting cavity defined between spaced confronting casting surfaces advancing in a direction of casting;b. providing said casting surfaces with an ability to remove heat from said molten metal in said casting cavity to cause said molten metal to solidify and thereby form a fully- or partially-solid metal slab within the casting cavity;c. continuously discharging said metal slab from said casting cavity through an outlet of said casting cavity; andd. reducing said ability of at least one of said casting surfaces to remove heat from the metal in a region of said cavity spaced from both said inlet and said outlet and extending transversely to said direction of casting, said ability being reduced relative to said ability of said at least one casting surface to remove heat from immediately adjacent upstream and downstream regions of said casting cavity.2. The method of claim 1 , wherein said casting surfaces each form one side of a heat-conductive member also having an ...

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Номер записи: 52
01-01-2015 дата публикации

METHOD OF MANUFACTURING HIGH-STRENGTH STEEL SHEET FOR A CAN

Номер: US20150000798A1
Автор: ARATANI Makoto, Iwasa Hiroki, Kojima Katsumi, Tanaka Takumi
Принадлежит:

A method of manufacturing a high-strength steel sheet includes, on a mass percent basis, 0.03%-0.10% C, 0.01%-0.5% Si, 0.001%-0.100% P, 0.001%-0.020% S, 0.01%-0.10% Al, 0.005%-0.012% N, the balance being Fe and incidental impurities, and microstructures that do not contain a pearlite microstructure, wherein, when Mnf=Mn [% by mass]−1.71×S [% by mass], Mnf is 0.3 to 0.6, including: forming a slab by vertical-bending type continuous casting or bow type continuous casting, wherein surface temperature of a slab corner in a region where the slab undergoes bending deformation or unbending deformation is 800° C. or lower, or 900° C. or higher; forming a steel sheet by hot-rolling the slab followed by cold rolling; annealing the steel sheet after the cold rolling; and skinpass rolling at a draft of 3% or less after the annealing. 1. A method of manufacturing a high-strength steel sheet consisting of , on a mass percent basis , 0.03%-0.10% C , 0.01%-0.5% Si , 0.001%-0.100% P , 0.001%-0.020% S , 0.01%-0.10% Al , 0.005%-0.012% N , the balance being Fe and incidental impurities , and microstructures that do not contain a pearlite microstructure , wherein , when Mnf=Mn [% by mass]−1.71×S [% by mass] , Mnf is 0.3 to 0.6 , comprising:forming a slab by vertical-bending type continuous casting or bow type continuous casting, wherein surface temperature of a slab corner in a region where the slab undergoes bending deformation or unbending deformation is 800° C. or lower, or 900° C. or higher;forming a steel sheet by hot-rolling the slab followed by cold rolling;annealing the steel sheet after the cold rolling; andskinpass rolling at a draft of 3% or less after the annealing.2. The method according to claim 1 , wherein claim 1 , on a mass percent basis claim 1 , the Al content is 0.01% to 0.04%.3. The method according to claim 2 , wherein claim 2 , on a mass percent basis claim 2 , the S content is 0.001% to 0.005%.4. The method according to claim 3 , wherein claim 3 , on a mass ...

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Номер записи: 53
01-01-2015 дата публикации

PRODUCTION METHOD OF ULTRAFINE CRYSTALLINE ALLOY RIBBON

Номер: US20150000862A1
Автор: Ohta Motoki, Yoshizawa Yoshihito
Принадлежит: HITACHI METALS, LTD.

A method for producing an ultrafine-crystalline alloy ribbon having a structure in which crystal grains having an average grain size of 1-30 nm are dispersed at a ratio of 5-30% by volume in an amorphous matrix ultrafine, comprising the steps of ejecting an alloy melt onto a rotating cooling roll to quench it; forming an easily windable ribbon having such toughness that it is not fractured when bent to a bending radius of 1 mm or less, before the start of winding around a reel; and changing the forming conditions of the ribbon after the start of winding around a reel, to obtain a structure in which ultrafine crystal grains having an average grain size of 1-30 nm are dispersed at a ratio of 5-30% by volume in an amorphous matrix. 1. A method for producing an ultrafine-crystalline alloy ribbon having a structure in which ultrafine crystal grains having an average grain size of 1-30 nm are dispersed at a ratio of 5-30% by volume in an amorphous matrix , comprising the steps ofejecting an alloy melt onto a rotating cooling roll to quench it;forming a ribbon having such toughness that it is not fractured when bent to a bending radius of 1 mm or less, before the start of winding around a reel; andchanging the forming conditions of said ribbon after the start of winding around a reel, to obtain a structure in which ultrafine crystal grains having an average grain size of 1-30 nm are dispersed at a ratio of 5-30% by volume in an amorphous matrix.2. The method for producing a ultrafine-crystalline alloy ribbon according to claim 1 , wherein the ribbon before the start of winding around a reel has a structure claim 1 , in which ultrafine crystal grains having an average grain size of 0-20 nm are dispersed at a ratio of 0-4% by volume in an amorphous matrix.3. The method for producing a ultrafine-crystalline alloy ribbon according to claim 1 , wherein the forming conditions of said ribbon are changed by making the amount of a paddle on said cooling roll larger after the start ...

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Номер записи: 54
07-01-2021 дата публикации

CONTINUOUS CASTING INGOT MOLD FOR METALS, AND SYSTEM AND METHOD FOR BREAK-OUT DETECTION IN A CONTINUOUS METAL-CASTING MACHINE

Номер: US20210001393A1
Автор: CASTIAUX Etienne, ZULIANI Gianni
Принадлежит: EBDS Engineering

Disclosed is a continuous casting ingot mold for metals, of the type made of an assembly of metal plates mounted against cooling devices configured to allow cooling of the metal plates by the circulation of a liquid coolant. Said ingot mold comprises an optical fiber with a diameter greater than 1.6 mm, having a plurality of fiber Bragg grating filters and extending in a wall of at least one of said plates in a direction that is not parallel to the axis of casting of the ingot mold. 112221422283422281228. An ingot mold () for continuous metal casting , of the type formed by an assembly of metal plates () bearing on cooling devices () configured to allow the cooling of the metal plates () by the circulation of a coolant , comprising an optical fiber () , having a plurality of Bragg filters () , extending in a wall of at least one of said plates () , the optical fiber () extending in a direction that is not parallel to the casting axis of the ingot mold () , wherein the optical fiber () has a diameter greater than 1.6 mm.21228. The ingot mold () as claimed in the preceding claim , wherein the optical fiber () is provided with a coating or with a tube.312. The ingot mold () as claimed in the preceding claim , wherein the direction exhibits an angle of between 75° and 105° with the casting axis.412282222. The ingot mold () as claimed in the preceding claim , which has a square or rectangular cross section and comprises optical fibers () in at least two mutually opposite plates () , preferably in four plates ().51228. The ingot mold () as claimed in the preceding claim , wherein the optical fiber () has at least ten Bragg filters per meter , preferably at least twenty Bragg filters per meter , preferentially at least thirty Bragg filters per meter , and even more preferentially at least forty Bragg filters per meter.61228. The ingot mold () as claimed in the preceding claim , which comprises at least two optical fibers () that extend parallel to one another and are ...

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Номер записи: 55
07-01-2021 дата публикации

CASTING APPARATUS AND CASTING METHOD

Номер: US20210001394A1
Автор: HÅKONSEN Arild
Принадлежит: NORSK HYDRO ASA

A casting apparatus for continuous or semi-continuous casting having a reservoir for supplying liquid metal, a direct chill casting mold having a mold cavity for at least temporarily holding liquid metal and to at least partially solidify the liquid metal into a cast product, and a pump disposed on the flow path between the reservoir and the mold cavity, wherein the pump is operable to generate a force in the liquid metal that is acting against the tendency of the liquid metal to flow along the flow path from the reservoir into the mold cavity by gravity to control a flow of the liquid metal from the reservoir into the mold cavity, wherein the pump is a direct current electromagnetic pump. 11035. A casting apparatus () for continuous or semi-continuous casting of a cast product () comprising{'b': 15', '20', '20', '35, 'a reservoir () for supplying liquid metal (), wherein the liquid metal () is liquid aluminium or aluminium alloy and the cast product () is an aluminium or aluminium alloy product,'}{'b': 25', '30', '20', '20', '35', '55', '20', '15', '30', '10', '20', '55', '15', '30', '20', '30', '26', '25', '35', '25', '27', '25, 'a direct chill casting mold () having a mold cavity () for at least temporarily holding liquid metal () and to at least partially solidify the liquid metal () into a cast product (), wherein a flow path () for the liquid metal () is defined between the reservoir () and the mold cavity (), and wherein the casting apparatus () is configured such that the liquid metal () has a tendency to flow along the flow path () from the reservoir () into the mold cavity () by gravity (g), wherein the liquid metal () enters the mold cavity () via a first vertically higher side () of the mold (), and wherein the cast product () exits the mold () via a second vertically lower side () of the mold (), and'}{'b': 60', '55', '15', '30', '60', '20', '20', '55', '15', '30', '20', '15', '30', '60, 'a pump () disposed on the flow path () between the reservoir () ...

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Номер записи: 56
07-01-2021 дата публикации

METHOD FOR CASTING METAL STRIP WITH CROWN CONTROL

Номер: US20210001396A1
Автор: JR. Robert Gerard, NOONING, PONDER Mike, REES Bradley, THOMAS James M.
Принадлежит:

A method and apparatus of continuously casting thin strip by controlling roll crown is provided. The apparatus for continuously casting thin strip by controlling roll crown includes at least two expansion rings positioned within and adjacent a cylindrical tube and spaced within 450 mm of edge portions of the cast strip formed on opposite end portions of casting rolls during a casting campaign. Alternatively or in addition, the apparatus includes at least one expansion ring within the cylindrical tube at a position corresponding to center portions of the cast strip formed on the casting rolls during a casting campaign. Each expansion ring has at least one heating element and an insulating coating thereon and is adapted to increase in radial dimension causing the cylindrical tube to expand changing roll crown of the casting surfaces of the casting rolls and thickness profile of the cast strip during casting. 128-. (canceled)29. An apparatus for continuously casting thin strip by controlling roll crown comprising:a pair of counter rotating casting rolls with a nip there between capable of delivering cast strip downwardly from the nip, each casting roll having a casting surface formed by a cylindrical tube having thickness of no more than 80 millimeters of a material selected from the group consisting of copper and copper alloy, optionally with a metal or metal alloy coating thereon, and having a plurality of longitudinal water flow passages extending through the cylindrical tube;at least two expansion rings positioned within and engaging the cylindrical tube and spaced within 450 mm of edge portions of the cast strip formed on opposite end portions of the casting rolls during a casting campaign, each expansion ring having an insulating coating where the expansion ring engages the cylindrical tube, at least one heating element, and an expansion ring temperature sensor, wherein a thickness of the insulating coating is selected such that, when the heating elements are ...

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Номер записи: 57
05-01-2017 дата публикации

Vacuum Melting and Casting Apparatus

Номер: US20170001239A1
Автор: Hibino Naoki, OOHINATA Youichi, Oowada Takashi, Tashiro Seiji
Принадлежит: ULVAC, INC.

A hermetically sealed container is equipped inside thereof with: a melting furnace; a cooling roll for subjecting the molten metal tapped from the melting furnace to primary cooling to form a casting; and a rotatable cooling drum which receives the casting formed by the cooling roll and which subjects the casting to secondary cooling. The cooling drum has: a tubular member elongated in one longitudinal direction and having a receiving opening which is formed to open on one side of the tubular member to receive therein the casting, and a discharge opening which is formed to open on an opposite side of the tubular member to discharge the casting that has been subjected to the secondary cooling; and a transfer means for transferring the casting received from the receiving opening toward the discharge opening in response to the rotation of the tubular member. 1. A vacuum melting and casting apparatus having , inside a hermetically sealed container to which an evacuating pipe is connected:a melting furnace;a cooling roll for forming a casting by subjecting molten metal tapped from the melting furnace to primary cooling; anda rotatable cooling drum for receiving the casting formed by the cooling roll and for subjecting the casting to secondary cooling;wherein the cooling drum comprises:a tubular member elongated in one longitudinal direction and having a receiving opening which is formed to open on one side of the tubular member in order to receive therein the casting, and a discharge opening which is formed to open on an opposite side of the tubular member in order to discharge the casting that has been subjected to the secondary cooling; anda transfer means for transferring the casting received from the receiving opening toward the discharge opening in response to the rotation of the tubular member.2. The vacuum melting and casting apparatus according to claim 1 , wherein the transfer means is characterized in having: a first projecting strip disposed spirally on an ...

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Номер записи: 58
04-01-2018 дата публикации

ROLLER FOR A METALLURGICAL PLANT

Номер: US20180001360A1
Автор: Hohenbichler Gerald
Принадлежит:

A roller for a metallurgical plant is provided. The roller is modified in such a way that the camber thereof can be set in a simple and robust manner. The roller axle is connected to the roller shell at one point, preferably at at least two points, via a ring, and the ring has a heating element, wherein the height H of the ring can be changed by ΔH as a result of the heating of the heating element. 2. The roller as claimed in claim 1 , wherein the heating element is an electrical heating element.3. The roller as claimed in claim 1 , wherein the heating element is at least one of partially and completely claim 1 , spatially integrated into the ring.4. The roller as claimed in claim 1 , wherein the roller has a slip ring and has a line from the slip ring to the heating element claim 1 , such that electric current can be passed from the slip ring to the heating element via the line.5. The roller as claimed in claim 1 , wherein the roller axle extends over an entire length of the roller.6. The roller as claimed in claim 1 , wherein the roller axle has two axle journals.7. The roller as claimed in claim 1 , wherein the roller is a roller which is internally cooled by a cooling medium.8. The roller as claimed in claim 7 , wherein the roller axle has a central channel for a cooling agent.9. The roller as claimed in claim 8 , wherein a water guide element for guiding the cooling agent is arranged between the roller shell and the roller axle claim 8 , wherein the cooling agent can be guided in an axial direction claim 8 , in a spiral manner in the axial direction and a radial direction claim 8 , along an inner surface of the roller shell.10. The roller as claimed in claim 1 , wherein the roller has a temperature sensor for measuring an actual temperature of the ring and has a measurement line for passing a measurement signal from the temperature sensor to a further slip ring.11. The roller as claimed in claim 10 , wherein an analog or digital amplifier for amplifying a ...

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Номер записи: 59
04-01-2018 дата публикации

Methods and Apparatus for Actuated Fabricator

Номер: US20180001375A1
Автор: Oxman Neri, Peters Benjamin
Принадлежит:

In exemplary implementations of this invention, an actuated fabricator deposits structural elements (e.g., tensile structural elements) in a 3D pattern over large displacements. The fabricator is supported by at least three elongated support members. It includes onboard actuators that translate the fabricator relative to the ends of the support members. The fabricator is configured, by actuating different translations along different support members, to translate itself throughout a 3D volume. In some implementations, each of the actuators use fusible material to fuse metal tapes together, edge-to-edge, to form a hollow structure that can be shortened or lengthened. 1. A method comprising , in combination:(a) actuating linear motion of at least one tape out of a plurality of tapes;(b) melting fusible material; and(c) guiding the tapes, as the tapes undergo the linear motion, into a configuration in which edges of neighboring tapes are adjacent to each other during a time in which the fusible material cools and hardens to join neighboring tapes at the edges;wherein(i) the tapes, when joined by the fusible material, comprise walls of a hollow structure, and (A) melting fusible material adjacent to the edges, and', '(B) moving the edges apart from each other., '(iii) the method further comprises shortening or dismantling the hollow structure by'}2. The method of claim 1 , wherein the tapes comprise copper-clad steel.3. The method of claim 1 , wherein the melting is caused by heat from one or more thermoelectric heat pumps.4. The method of claim 3 , wherein each of the one or more thermoelectric heat pumps comprises a Peltier device.5. The method of claim 1 , wherein the method further comprises rotating a screw while a thread of the screw engages slots in the tapes claim 1 , such that claim 1 , as the screw undergoes rotation claim 1 , the hollow structure increases or decreases in length claim 1 , depending on the direction of rotation of the screw.6. The method of ...

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Номер записи: 60
04-01-2018 дата публикации

Continuous casting method of steel

Номер: US20180001377A1
Автор: Hiroyuki Ohno, Keigo Toishi, Norichika Aramaki, Yuji Miki
Принадлежит: JFE Steel Corp

Provided is a continuous casting method of steel that prevents a solidification completion position from being changed even when a drawing speed V of a cast slab is changed. The method includes drawing a cast slab by setting a drawing speed V 0 while spraying cooling water to the cast slab at a cooling water spray amount W 0 [kg/ton-cast slab]. Then, changing the drawing speed to the speed V 1 while spraying cooling water to the cast slab at a cooling water spray amount W 1 [kg/ton-cast slab]. The method further includes spraying cooling water to the cast slab at a cooling water spray amount Wt [kg/ton-cast slab] during a period of time t that is obtained by dividing a target length Lt by the drawing speed V 0 . The water spray amount Wt satisfying either formula (1): Wt<W 1 under a condition of V 1 <V 0 , or formula (2): Wt>W 1 under a condition of V 1 >V 0.

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Номер записи: 61
03-01-2019 дата публикации

CASTING MOLD FOR METAL SHEET

Номер: US20190001401A1
Автор: Lim Ka Ram, NA Young Sang
Принадлежит: KOREA INSTITUTE OF MACHINERY & MATERIALS

The present invention relates to a casting mold for a metal sheet by drawing molten metal into a mold cavity and cooling the molten metal, and the casting mold according to the present invention includes: a support portion at an upper side on which molten metal is disposed or a solid metal is placed and melted; a mold cavity at a lower side in which the metal sheet is formed as the molten metal is drawn from the support portion while filling the mold cavity and cooled; and a passageway through which the molten metal is drawn into the mold cavity from the support portion, in which the mold cavity includes a first surface at the upper side which communicates with the passageway, and a second surface at the lower side which faces the first surface, a plurality of suction portions for drawing the molten metal are formed in the second surface and extended downward from the second surface, the suction portions are connected to a vacuum source and configured to draw the molten metal by suctioning air from the mold cavity, and a blocking member, which is in contact with the second surface or the suction portions to prevent a leakage of the molten metal and allow an air flow, is disposed on the suction portions in the mold cavity. 1. A casting mold for a metal sheet by drawing molten metal into a mold cavity and cooling the molten metal , the casting mold comprising:a support portion at an upper side on which molten metal is disposed or a solid metal is placed and melted;a mold cavity at a lower side in which the metal sheet is formed as the molten metal is drawn from the support portion while filling the mold cavity and cooled; anda passageway through which the molten metal is drawn into the mold cavity from the support portion,wherein the mold cavity includes a first surface at the upper side which communicates with the passageway, and a second surface at the lower side which faces the first surface, a plurality of suction portions for drawing the molten metal are formed ...

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Номер записи: 62
05-01-2017 дата публикации

Plant and method for the production of metal

Номер: US20170002439A1
Автор: Gianpietro Benedetti, Paolo Bobig
Принадлежит: Danieli and C Officine Meccaniche SpA

Plant for the production of metal products comprising: a main rolling line configured to roll thin slabs; a main casting line of thin slabs associated downstream to a heating and/or maintenance furnace to heat and/or maintain the cast thin slabs at a uniform temperature, the main casting line being positioned upstream of and aligned with said main rolling line, the main rolling line being configured to roll the thin slabs arriving at least from the heating and/or maintenance furnace; an auxiliary rolling line provided with at least one rolling unit configured to roll conventional slabs and obtain thin slabs, and with a transfer unit positioned downstream of the rolling unit and configured to transfer the thin slabs rolled by the latter to the heating and/or maintenance furnace.

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Номер записи: 63
05-01-2017 дата публикации

ALUMINUM ALLOY FOR CONTINUOUS CASTING AND METHOD FOR PRODUCING THE SAME

Номер: US20170002443A1
Автор: Kang Hyuk, PARK Hoon Mo
Принадлежит:

The present disclosure provides an aluminum (Al) alloy for continuous casting, and a method of making the same. The Al alloy includes Al, Si in the range of 14 to 20 wt %, Ti in the range of 2 to 7 wt % and B in the range of 1 to 3 wt %. According to the disclosure, TiBcompound may be formed in the alloy, where the ratio of Ti:B may range from 2 to 2.5 wt %. By a process of continuously casting the molten metal, an aluminum alloy with improved elasticity may be produced. 111-. (canceled)12. A method for producing an aluminum alloy for continuous casting comprising:mixing a molten Al—Ti-based alloy comprising Ti 5˜10 wt % and a molten Al—B-based alloy comprising B 2˜10 wt % together.13. The method of claim 12 , wherein the molten AlTi and AlB are mixed in a tundish.14. The method of claim 12 , further comprising continuously casting the molten metal claim 12 , thereby producing the aluminum alloy. This application claims under 35 U.S.C. §119(a) the benefit of Korean Patent Application No. 10-2011-0125049 filed on Nov. 28, 2011, the entire contents of which are incorporated herein by reference.(a) Technical FieldThe present disclosure relates to an aluminum alloy. More particularly, the present disclosure relates to an aluminum allow produced by a continuous casting technique that bestows improved elasticity characteristics to the resulting aluminum alloy, and a method for producing the same.(b) Background ArtAluminum alloys improve the properties of aluminum and displays many excellent properties, which can be varied according to the composition of the alloy. For example, high strength aluminum alloys, such as duralumin, can be made by including copper, which provides high strength characteristics to the alloy. Increasing the copper content in the alloy has the effect of increasing the strength of the alloy. For example, super duralumin is created by adding copper to the duralumin, and extra super duralumin is created by adding copper to super duralumin. Extra super ...

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Номер записи: 64
05-01-2017 дата публикации

GALLING AND CORROSION RESISTANT INNER DIAMETER SURFACE IN ALUMINUM CASTER ROLL SHELL STEELS

Номер: US20170002453A1
Автор: CORDEA James N., SMITH Dennis M., VINTER Anthony
Принадлежит:

A strip casting apparatus having a roll shell with a nitrided inner diameter surface mounted on a steel core and method of manufacturing the same. The inner diameter of a steel roll shell may be nitrided by ion or plasma nitriding. The nitriding process can form tight, crack free nitride layer that provides a corrosion resistant barrier and exhibits a surface hardness that is greater than the surface hardness of the steel core and that improves galling resistance while maintaining efficient heat transfer of the roll shell. After nitriding, the roll shell can be shrink fit over a steel core. 1. A strip casting apparatus comprising:a cylindrical roll core; anda roll shell having an outer diameter surface and a nitrided inner diameter surface.2. The apparatus of claim 1 , the cylindrical roll core further comprises steel.3. The apparatus of claim 2 , the cylindrical roll core further comprises SS420 overlay.4. The apparatus of claim 1 , the roll shell further comprising steel.5. The apparatus of claim 4 , the roll shell further comprising one of HS-521 claim 4 , T-244 claim 4 , and HSC-621.6. The apparatus of claim 1 , wherein the nitrided inner diameter surface of the roll shell has a hardness that is greater than a hardness of the core.7. The apparatus of claim 1 , wherein the nitrided inner diameter surface of the roll shell has a hardness of 60-68 Rc.8. The apparatus of claim 1 , wherein the nitrided inner diameter surface of the roll shell comprises a uniform claim 1 , molecular bonded surface layer.9. The apparatus of claim 1 , wherein the nitrided inner diameter surface of the roll shell comprises nitrogen atoms in solution and in compound form dispersed through a thickness of at least 0.004 inch.10. The apparatus of claim 1 , the nitrided inner diameter surface of the roll shell further comprising a super saturated solid solution of iron and nitrogen.11. The apparatus of claim 1 , wherein the outer diameter surface of the roll shell is not nitrided.12. A method ...

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Номер записи: 65
01-01-2015 дата публикации

STEEL STRIP FOR COILED TUBING AND METHOD OF MANUFACTURING THE SAME

Номер: US20150004050A1
Автор: Kami Chikara, Matsuki Yasuhiro, NAKATA Hiroshi, Ogura Takahiko
Принадлежит:

A steel strip for coiled tubing contains, in terms of percent by mass, C: 0.10% or more and 0.16% or less, Si: 0.1% or more and 0.5% or less, Mn: 0.5% or more and 1.5% or less, P: 0.02% or less, S: 0.005% or less, Sol. Al: 0.01% or more and 0.07% or less, Cr: 0.4% or more and 0.8% or less, Cu: 0.1% or more and 0.5% or less, Ni: 0.1% or more and 0.3% or less, Mo: 0.1% or more and 0.2% or less, Nb: 0.01% or more and 0.04% or less, Ti: 0.005% or more and 0.03% or less, N: 0.005% or less, and the balance of Fe and inevitable impurities. 1. A steel strip for coiled tubing , the steel strip comprising , in terms of percent by mass , C: 0.10% or more and 0.16% or less , Si: 0.1% or more and 0.5% or less , Mn: 0.5% or more and 1.5% or less , P: 0.02% or less , S: 0.005% or less , Sol. Al: 0.01% or more and 0.07% or less , Cr: 0.4% or more and 0.8% or less , Cu: 0.1% or more and 0.5% or less , Ni: 0.1% or more and 0.3% or less , Mo: 0.1% or more and 0.2% or less , Nb: 0.01% or more and 0.04% or less , Ti: 0.005% or more and 0.03% or less , N: 0.005% or less , and the balance of Fe and inevitable impurities.2. The steel strip according to claim 1 , further comprising claim 1 , in terms of percent by mass claim 1 , one or two selected from Sn: 0.001% or more and 0.005% or less and Ca: 0.001% or more and 0.003% or less.3. The steel strip according to claim 1 , wherein the steel strip is subjected to finish hot rolling temperature of 820° C. or more and 920° C. or less and coiled at a temperature of 550° C. or more and 620° C. or less.4. A method of manufacturing a steel strip for coiled tubing claim 1 , comprising:melting molten steel having composition including, in terms of percent by mass, C: 0.10% or more and 0.16% or less, Si: 0.1% or more and 0.5% or less, Mn: 0.5% or more and 1.5% or less, P: 0.02% or less, S: 0.005% or less, Sol. Al: 0.01% or more and 0.07% or less, Cr: 0.4% or more and 0.8% or less, Cu: 0.1% or more and 0.5% or less, Ni: 0.1% or more and 0.3% or less, ...

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Номер записи: 66
05-01-2017 дата публикации

PERMANENT MAGNET-TYPE MOLTEN METAL STIRRING DEVICE AND MELTING FURNACE AND CONTINUOUS CASTING APPARATUS INCLUDING THE SAME

Номер: US20170003077A1
Автор: Takahashi Kenzo
Принадлежит:

A permanent magnet-type molten metal stirring device includes: a support body that can suppress heat transfer from molten metal; a magnetic field unit provided above the support body and including a permanent magnet allowing magnetic force lines to vertically extend in the molten metal; and a drive unit provided below the support body and driving the molten metal with an electromagnetic force generated by the magnetic force lines and current allowed to flow through the molten metal by the drive unit. The drive unit includes: a cylindrical drive main body mounted on a lower portion of the support body and including a passage formed therein and laterally extending in a longitudinal direction, and a pair of electrodes provided at positions opposed to each other along a width direction via the passage, the pair of electrodes allowing current intersecting the magnetic lines of force in the molten metal. 1. A permanent magnet-type molten metal stirring device comprising:a support body that is capable of suppressing transfer of heat from molten metal;a magnetic field unit that is provided above the support body and includes a permanent magnet allowing magnetic lines of force to vertically extend in the molten metal; anda drive unit that is provided below the support body and drives the molten metal with an electromagnetic force generated by the magnetic lines of force generated from the permanent magnet and current allowed to flow through the molten metal by the drive unit, a cylindrical drive unit main body that is mounted on a lower portion of the support body and includes a passage formed therein and laterally extending in a longitudinal direction, and', 'a pair of electrodes that are provided at positions where the pair of electrodes being opposed each other along a width direction via the passage, the pair of electrodes being exposed to the passage, and the pair of electrodes allowing current in the molten metal, the current intersecting the magnetic lines of force., ...

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Номер записи: 67
05-01-2017 дата публикации

Aluminum alloy fin material for heat exchangers, and method of producing the same, and heat exchanger

Номер: US20170003085A1
Автор: Akio Niikura, Atsushi Fukumoto, Junichi MOCHIZUKI
Принадлежит: UACJ Corp

A heat exchanger aluminum alloy fin material, comprising Si 0.5 to 1.5 mass %; Fe 0.1 to 1.0 mass %; Mn 0.8 to 2.2 mass %; Zn 0.4 to 2.5 mass %; and further at least one selected from Cu, Ti, Zr, Cr, and V each in 0.02 to 0.3 mass %, with the balance being Al and unavoidable impurities, wherein a metallographic microstructure before braze-heating is such that a density of second phase particles having a circle-equivalent diameter of less than 0.1 μm is less than 1×10 7 particles/mm 2 , and that a density of second phase particles having a circle-equivalent diameter of 0.1 μm or more is 5×10 4 particles/mm 2 or more, wherein a tensile strength before braze-heating, TS B , a tensile strength after braze-heating, TS A , and a sheet thickness of the fin material, t, satisfy: 0.4≦(TS B −TS A )/t≦2.1, and wherein the sheet thickness is 150 μm or less.

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Номер записи: 68
02-01-2020 дата публикации

SUPERCONDUCTING STABILIZER, SUPERCONDUCTING WIRE AND SUPERCONDUCTING COIL

Номер: US20200002787A1
Автор: FUKUOKA Kosei, ITO Yuki, MAKI Kazunari
Принадлежит: MITSUBISHI MATERIALS CORPORATION

The stabilizer material for superconductor of the present invention is used for a superconducting wire, and the stabilizer material for superconductor includes a copper material, the copper material contains one kind or more of additive elements selected from Mg, Mn, Ti, Y, and Zr for a total amount of 3 ppm by mass or more and 100 ppm by mass or less, with the remainder being Cu and unavoidable impurities, the total concentration of the unavoidable impurities other than O, H, C, N, and S, which are gas components, is 5 ppm by mass or more and 100 ppm by mass or less, and compounds including one kind or more selected from MgS, MgSO, MnS, TiS, YS, YSO, and ZrS are present in the matrix. 1. A stabilizer material for superconductor used for a superconducting wire , the stabilizer material for superconductor comprising:a copper material, whereinthe copper material contains one or more additive elements selected from the group consisting of Mg, Mn, Ti, Y, and Zr in a total amount of 3 ppm by mass or more and 100 ppm by mass or less, with a remainder being Cu and unavoidable impurities,a total concentration of the unavoidable impurities other than O, H, C, N, and S, which are gas components, is 5 ppm by mass or more and 100 ppm by mass or less, and{'sub': 4', '2', '2, 'one or more compounds selected from the group consisting of MgS, MgSO, MnS, TiS, YS, YSO, and ZrS are present in a matrix.'}2. The stabilizer material for superconductor according to claim 1 , wherein the unavoidable impurities include:Fe in an amount of 10 ppm by mass or less,Ni in an amount of 10 ppm by mass or less,As in an amount of 5 ppm by mass or less,Ag in an amount of 50 ppm by mass or less,Sn in an amount of 4 ppm by mass or less,Sb in an amount of 4 ppm by mass or less,Pb in an amount of 6 ppm by mass or less,Bi in an amount of 2 ppm by mass or less, andP in an amount of 3 ppm by mass or less.3. The stabilizer material for superconductor according to claim 1 ,wherein a ratio y/x in a range of 0.5 ...

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Номер записи: 69
04-01-2018 дата публикации

SUPERCONDUCTING WIRE AND SUPERCONDUCTING COIL

Номер: US20180005731A1
Автор: FUKUOKA Kosei, ITO Yuki, MAKI Kazunari
Принадлежит: MITSUBISHI MATERIALS CORPORATION

The present invention is a superconducting wire including: a wire formed of a superconducting material; and a superconducting stabilization material disposed in contact with the wire, in which the superconducting stabilization material is formed of a copper material which contains: one or more types of additive elements selected from Ca, Sr, Ba, and rare earth elements in a total of 3 ppm by mass to 400 ppm by mass; a balance being Cu and inevitable impurities, and in which a total concentration of the inevitable impurities excluding O, H, C, N, and S which are gas components is 5 ppm by mass to 100 ppm by mass. 1. A superconducting wire comprising:a wire formed of a superconducting material; anda superconducting stabilization material disposed in contact with the wire, whereinthe superconducting stabilization material is formed of a copper material which contains: one or more types of additive elements selected from Ca, Sr, Ba, and rare earth elements in a total of 3 ppm by mass to 400 ppm by mass; and a balance being Cu and inevitable impurities, and in which a total concentration of the inevitable impurities excluding O, H, C, N, and S which are gas components is 5 ppm by mass to 100 ppm by mass.2. The superconducting wire according to claim 1 ,wherein the superconducting stabilization material is formed of the copper material with the inevitable impurities in which an Fe content is 10 ppm by mass or less, a Ni content is 10 ppm by mass or less, an As content is 5 ppm by mass or less, a Ag content is 50 ppm by mass or less, a Sn content is 4 ppm by mass or less, an Sb content is 4 ppm by mass or less, a Pb content is 6 ppm by mass or less, a Bi content is 2 ppm by mass or less, and a P content is 3 ppm by mass or less.3. The superconducting wire according to claim 1 ,wherein the superconducting stabilization material is formed of the copper material in which a ratio Y/X of a total amount of additive elements of one or more types selected from Ca, Sr, Ba, and rare ...

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Номер записи: 70
08-01-2015 дата публикации

Manufacturing Method for Strip Casting 550 MPa-Grade High Strength Atmospheric Corrosion-Resistant Steel Strip

Номер: US20150007913A1
Автор: Fang Yuan, QIN Bo, Wang Xiufang, Wu Jianchun, Yu Yan
Принадлежит:

A manufacturing method for strip casting 550 MPa-grade high strength atmospheric corrosion-resistant steel strip, comprising the following steps: 1) smelting, where the chemical composition of a molten steel is that: C is between 0.03-0.08%, Si≦0.4%, Mn is between 0.6-1.5%, P is between 0.07-0.22%, S≦0.01%, N≦0.012%, Cu is between 0.25-0.8%, Cr is between 0.3-0.8%, and Ni is between 0.12-0.4%, additionally, also comprised is at least one micro-alloying element among Nb, V, Ti, and Mo, where Nb is between 0.01-0.08%, V is between 0.01-0.08%, Ti is between 0.01-0.08%, and Mo is between 0.1-0.4%, and where the remainder is Fe and unavoidable impurities; 2) strip casting, where a 1-5 mm-thick cast strip is casted directly; 3) cooling the strip, where the cooling rate is greater than 20° C./s; 4) online hot rolling the cast strip, where the hot rolling temperature is between 1050-1250° C., where the reduction rate is between 20-50%, and where the deformation rate is >20s; austenite online recrystallizing after hot rolling, where the thickness of the hot rolled strip is between 0.5-3.0 mm; and, 5) cooling and winding, where the cooling rate is between 10-80° C./s, and where the winding temperature is between 570-720° C. The microscopic structure of a steel strip acquired is primarily constituted by fine polygonal ferrite and pearlite. 2. The manufacturing method of claim 1 , wherein claim 1 , in step 1) claim 1 , the content of each of Nb claim 1 , V and Ti is 0.01˜0.05% by weight percentage claim 1 , and the content of Mo is 0.1˜0.25% by weight percentage.3. The manufacturing method of claim 1 , wherein claim 1 , in step 3) claim 1 , the cooling rate of the steel strip is greater than 30°/sec.4. The manufacturing method of claim 1 , wherein claim 1 , in step 4) claim 1 , the hot rolling temperature is in the range of 1 claim 1 ,100˜1 claim 1 ,250°.5. The manufacturing method of claim 1 , wherein claim 1 , in step 4) claim 1 , the hot rolling temperature is in the range ...

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Номер записи: 71
12-01-2017 дата публикации

CONTROL DEVICE FOR OSCILLATING TABLE

Номер: US20170008076A1
Автор: De Luca Andrea, Del Tedesco Stefano
Принадлежит: DANIELI & C. OFFICINE MECCANICHE S.P.A.

A control device () for an oscillating table (), comprising:—a closed and pressurized hydraulic circuit (),—a hydraulic actuator () connected to said hydraulic circuit () and adapted to be connected to the mobile part of the oscillating table () to adjust the position thereof, in which said hydraulic actuator () is a double-acting cylinder having a first chamber () and a second chamber () delimited from each other by a sliding piston () rigidly connected to a first rod () which is rigidly restrainable to said mobile part, in which said hydraulic circuit () comprises at least one reversible hydraulic pump () directly connected to at least one of said first chamber () and second chamber (). 1. A control device for an oscillating table , said device being usable to adjust the oscillation of a mobile part of said oscillating table , said device comprising:a hydraulic circuita hydraulic actuator connected to said hydraulic circuit and adapted to be connected to the mobile part of the oscillating table to adjust the position thereof,wherein said hydraulic actuator is a double-acting cylinder having a first chamber and a second chamber delimited from each other by a sliding piston rigidly connected to at least one rod which is rigidly restrainable to said mobile part,wherein said hydraulic circuit is a closed circuit and is pressurized at a pressure above the atmospheric pressure, and comprises at least one reversible hydraulic pump, which is activated by means of a motor and is directly connected to at least one of said first chamber and second chamber with one or more ducts, without interposition of servo-valves, whereby the control of the hydraulic flow is performed directly by at least one hydraulic pump.2. The control device according to claim 1 , wherein there is provided a control circuit connected to said hydraulic circuit to control the position of said piston.3. The control device according to claim 2 , wherein said control circuit is adapted to act in feedback.4 ...

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Номер записи: 72
11-01-2018 дата публикации

CONTINUOUS-CAST SLAB, METHOD AND APPARATUS OF MANUFACTURING THE SAME, AND METHOD AND APPARATUS OF MANUFACTURING THICK STEEL PLATE

Номер: US20180009015A1
Автор: IMAI Shuntaro, MIZOGUCHI Toshiaki, NAGAI Shinji, SAKAI Daisuke, Sakurai Hideaki, TAKATA Ryousuke, Uchiyama Hiroaki
Принадлежит: NIPPONSTEEL & SUMITOMO METAL CORPORATION

A primary object of the present invention is to provide a continuous-cast slab where central porosity is reduced by surly crushing the slab, and a method and apparatus of manufacturing the same. 1. A continuous-cast slab of 0.1 to 0.3 in ratio D/W , the ratio D/W being a ratio of casting thickness D to casting width W , and 230 to 380 mm in casting thickness D , the continuous-east slab having a horizontally symmetrical granular equiaxed crystals at least in a center in a thickness direction , the continuous-cast slab comprising:a first reduction dent and a second reduction dent that is narrower than the first reduction dent at least on one long side surface, the second reduction dent denting further from a bottom surface of the first reduction dent,{'sub': 1', '2, 'wherein a dent amount dof the first reduction dent from an end surface of the continuous-cast slab is 0.08 to 1.1 mm, and a dent amount dof the second reduction dent from the bottom surface of the first reduction dent is 1.2 to 12 mm, and/or a dent rate of the first reduction dent from an end surface of the continuous-cast slab, to the casting thickness D is 0.03 to 0.36%, and a dent rate of the second reduction dent from the bottom surface of the first reduction dent, to the casting thickness D is 0.6 to 4%.'}23-. (canceled)4. The continuous-cast slab according to claim 1 , whereindistance between either end of the first reduction dent and the end surface of the continuous-cast slab is 0.37×the casting thickness D to 1.0×the casting thickness D, and distance between either end of the second reduction dent and the end surface of the continuous-cast slab is 0.5×the casting thickness D to 1.2×the casting thickness D.5. The continuous-cast slab according to claim 1 , wherein a maximum porosity volume is no more than 1.5×10cm/g.6. A method of manufacturing a continuous-cast slab claim 1 , the method comprising:a first step of forming a first reduction dent at least in one long side surface of the continuous- ...

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Номер записи: 73
11-01-2018 дата публикации

METHOD FOR CONTINUOUSLY CASTING STEEL

Номер: US20180009026A1
Автор: FUJIMOTO Kohei, HANAO Masahito, MIYAHARA Masatoshi, Uchiyama Hiroaki
Принадлежит:

A primary object of the present invention is to provide a technique of avoiding occurrence of surface defects caused by an electromagnetic brake while checking internal defects with this electromagnetic brake, so that cleanliness of a cast steel can be improved compared with prior arts, and the present invention provides a method for continuously casting steel, the method comprising supplying molten steel into a mold while applying an electromagnetic brake to an outlet flow discharged from an outlet port of an immersion nozzle, wherein magnetic flux density (B) of the electromagnetic brake is within a range of the following (Formula 1): 2. The method for continuously casting steel according to claim 1 , wherein a rectangular mold that has short sides and long sides on a horizontal cross-sectional shape is used as the mold.3. The method for continuously casting steel according to claim 2 , wherein the flow velocity v of the molten steel is 0.685 m/s to 0.799 m/s.4. The method for continuously casting steel according to claim 1 , whereina funnel mold with short sides and long sides on a horizontal cross-section, in which a distance between the long sides facing each other in the mold at a middle of each long side is enlarged than a distance between the long sides at ends of the long sides, is used as the mold.5. The method for continuously casting steel according to claim 4 , wherein D/Dis 1.16 to 1.24.6. The method for continuously casting steel according to claim 4 , wherein H/His 0.161 to 0.327.7. The method for continuously casting steel according to claim 4 , wherein the flow velocity v of the molten steel is 0.441 m/s to 1.256 m/s.8. The method for continuously casting steel according to claim 4 , wherein the outlet flow angle θ of the molten steel is −45° to −5°. The present invention relates to a method for continuously casting steel.Continuous casting of steel is carried out while molten metal in a tundish is supplied into a mold of continuous casting ...

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Номер записи: 74
10-01-2019 дата публикации

DEVICE AND METHOD FOR PREPARING LARGE-SIZED HIGH-QUALITY ALUMINIUM ALLOY INGOT

Номер: US20190009328A1
Автор: BAI Yuelong, GAO Mingwei, LIU Jianchao, Xu Jun, Yang Yujie, ZHANG Shaoming, Zhang Zhifeng
Принадлежит: GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS

Provided is a device for preparing a large-sized high-quality aluminium alloy ingot, which is mainly composed of a uniform cooler, a hot top, an oil-gas lubrication mold, an induction coil and a dummy ingot, wherein the hot top is arranged above the oil-gas lubrication mold, the induction coil is arranged outside the oil-gas lubrication mold, the uniform cooler is arranged inside the oil-gas lubrication mold, and the dummy ingot is arranged below the oil-gas lubrication mold. Further provided is a method for preparing a large-sized high-quality aluminium alloy ingot. The device combines a partitioned gas supply mold with the uniform cooler and an electromagnetic stirrer, and the effective coupling of the three achieves forced and uniform solidification forming of a melt under gas pressure contact conditions, such that a stable and continuous gas film is formed between the melt and the mold. The ingot has a smooth surface, and a fine and uniform internal structure. 1. A device for preparing a large-sized high-quality aluminium alloy ingot , comprising:a uniform cooler;a hot top;an oil-gas lubrication mold;an induction coil; anda dummy ingot,wherein the hot top is arranged above the oil-gas lubrication mold, the induction coil is arranged outside the oil-gas lubrication mold, the uniform cooler is arranged inside the oil-gas lubrication mold, and the dummy ingot is arranged below the oil-gas lubrication mold.2. The device for preparing a large-sized high-quality aluminium alloy ingot according to claim 1 , wherein the oil-gas lubrication mold comprises a mold body and a graphite ring mounted above the mold body claim 1 , wherein the graphite ring is provided with a gas groove and an oil groove on its outer wall claim 1 , and wherein the oil groove is separated from the gas groove claim 1 , and is arranged on an upper portion thereof.3. The device for preparing a large-sized high-quality aluminium alloy ingot according to claim 2 , wherein the gas groove is divided ...

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Номер записи: 75
09-01-2020 дата публикации

ITERATIVE LEARNING CONTROL FOR PERIODIC DISTURBANCES IN TWIN-ROLL STRIP CASTING WITH MEASUREMENT DELAY

Номер: US20200009644A1
Автор: Browne, CHIU George T.C., III Florian Maurice, REES Harold Bradley, SUNDARAM Neera Jain
Принадлежит:

A twin roll casting system where the casting rolls have a nip between the casting rolls, each roller having a circumference and a rotational period. The casting roll controller adjusts the nip between the casting rolls in response to control signals. The sensor measures at least one parameter of the cast strip. The ILC controller receives strip measurement signals from the sensor and provides control signals to the casting roll controller. The ILC controller includes an ILC control algorithm to generate the control signals based on the strip measurement signals and a time delay estimate based on circumference, rotational period, and a length of cast strip between the nip and the sensor to compensate for an elapsed time from the cast strip exiting the nip to being measured by the cast strip sensor. 116-. (canceled)17. A method of reducing periodic disturbances in a cast strip metal product in a twin roll casting system having a pair of counter-rotating casting rolls producing the cast strip at a nip between the casting rolls , the nip being adjustable by a casting roll controller , each roller having a circumference C and a rotational period T; the method comprising:{'sub': D', 'D', 'R, 'measuring at least one parameter of the cast strip at a time delay Tfrom when the cast strip exited the nip, where the time delay Texceeds the rotational period T{'sub': D', 'R', 'D, 'calculating a time delay estimate ΔT to compensate for time delay T, where the time delay estimate ΔT is calculated from the roller circumference C and the rotational period Tand at least one measured cast strip length parameter between when the cast strip exits the nip and when the cast strip is measured a time delay Tlater;'}providing the time delay estimate ΔT and the measured at least one parameter to an iterative learning controller;generating control signals for the casting roll controller by the iterative learning controller based on the time delay estimate ΔT and the measured at least one ...

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Номер записи: 76
09-01-2020 дата публикации

Nozzle, casting apparatus, and cast product manufacturing method

Номер: US20200009649A1
Автор: Ken Suzuki, Naokuni Muramatsu
Принадлежит: NGK Insulators Ltd

A nozzle put into a molten metal in vertical upwards continuous casting for casting a cast product by pulling up the molten metal, the nozzle includes a nozzle body having an intake hole through which the molten metal is taken in and which is formed in a lateral surface of the nozzle body and a flange portion formed on lower side of the intake hole and projecting beyond the nozzle body.

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Номер записи: 77
10-01-2019 дата публикации

HIGH PERFORMANCE ALUMINUM ALLOYS HAVING HIGH AMOUNTS OF RECYCLED MATERIAL AND METHODS OF MAKING THE SAME

Номер: US20190010592A1
Автор: BARKER SIMON WILLIAM, BENDZINSKI DUANE E., DAS SAZOL KUMAR, Felberbaum Milan, PIROTEALA TUDOR
Принадлежит: Novelis Inc.

Provided herein are high performance aluminum alloy products having desirable mechanical properties and methods of making the same. The high performance aluminum alloy products described herein contain a high content of recycled material and are prepared by casting an aluminum alloy to form a cast aluminum alloy product and processing the cast aluminum alloy product. The method of processing the cast aluminum alloy product can include two hot rolling steps. 1. A method of producing an aluminum alloy product , comprising:providing a molten aluminum alloy comprising recycled content in an amount of at least 30%;casting the molten aluminum alloy to produce a cast aluminum alloy product;hot rolling the cast aluminum alloy product in a first hot rolling step to produce an aluminum alloy hot band;preheating the aluminum alloy hot band; andhot rolling the aluminum alloy hot band in a second hot rolling step to a gauge that is at least a 50% reduction in thickness as compared to a gauge of the cast aluminum alloy product.2. The method of claim 1 , wherein the recycled content in the molten aluminum alloy is at least 50%.3. The method of claim 1 , wherein the recycled content in the molten aluminum alloy is at least 70%.4. The method of claim 1 , wherein the casting comprises continuous casting.5. The method of claim 4 , wherein the casting comprises direct chill casting.6. The method of claim 5 , further comprising homogenizing the cast aluminum alloy product prior to the first hot rolling step.7. The method of claim 1 , wherein the providing comprises melting an aluminum alloy claim 1 , aluminum scrap claim 1 , or a combination of these.8. The method of claim 1 , wherein the molten aluminum alloy comprises iron.9. The method of claim 8 , wherein the iron is present in an amount of at least 0.25 wt. % based on the weight of the molten aluminum alloy.10. The method of claim 9 , wherein the iron is present in an amount from 0.25 wt. % to 0.50 wt. % based on the weight of the ...

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Номер записи: 78
09-01-2020 дата публикации

Process for low-cost tempering of aluminum casting

Номер: US20200010933A1
Автор: Randolf Scott BEALS
Принадлежит: Individual

A thermally stable component formed of a tempered aluminum alloy casting which reduced costs is provided. The aluminum alloy typically has an elongation of at least 8% after casting, which is preferred for self-piercing rivet processes. The aluminum alloy leaves a casting facility in the as-cast (F temper) condition. The cast aluminum alloy is then shipped to another entity, such as an OEM, and is subjected to an artificial aging process, such as on the OEM's existing paint line, rather than at the casting facility. The artificial aging process typically includes electrodeposition coating and curing. The components that can be formed by the reduced cost method include lightweight automotive vehicle components, including structural, body-in-white, suspension, or chassis components, such as front shock towers, front body hinge pillars, tunnels, and rear rails.

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Номер записи: 79
09-01-2020 дата публикации

ALUMINUM ALLOY THICK PLATE

Номер: US20200010934A1
Автор: Kubo Takashi, YAMADA Tatsuya
Принадлежит: UACJ Corporation

An aluminum alloy thick plate is formed of an aluminum alloy including Mg of 2.0 to 5.0 mass %. The aluminum alloy thick plate has a plate thickness of 300 to 400 mm. A is 160 pieces/cmor less and B is 1.15 times or more as large as A, where (i) A (pieces/cm) is a maximum value in numbers of porosities with an equivalent circle diameter of 50 μm or more in each of positions located at a center portion in a plate thickness direction and at positions of 0.39 Wa to 0.48 Wa in a plate width direction; and (ii) B (pieces/cm) is a maximum value in numbers of porosities with an equivalent circle diameter of 50 μm or more in each of positions located at the center portion in the plate thickness direction and at positions of 0.12 Wa to 0.30 Wa in the plate width direction. 1. An aluminum alloy thick plate comprising an aluminum alloy including Mg of 2.0 to 5.0 mass % , whereinthe aluminum alloy thick plate has a plate thickness of 300 to 400 mm, and{'sup': 2', '2', '2, 'A is 160 pieces/cmor less and B is 1.15 times or more as large as A, when Wa is a plate width of the aluminum alloy thick plate in a section perpendicular to a casting direction, a 0 position is a center in a plate width direction, a 0.50 Wa position is a plate end in the plate width direction, where (i) A (pieces/cm) is a maximum value in numbers of porosities with an equivalent circle diameter of 50 μm or more per unit area in each of positions located at a center portion in a plate thickness direction and at positions of 0.39 Wa, 0.40 Wa, 0.42 Wa, 0.44 Wa, 0.46 Wa, and 0.48 Wa in the plate width direction; and (ii) B (pieces/cm) is a maximum value in numbers of porosities with an equivalent circle diameter of 50 μm or more per unit area in each of positions located at the center portion in the plate thickness direction and at positions of 0.12 Wa, 0.16 Wa, 0.21 Wa, 0.25 Wa, and 0.30 Wa in the plate width direction.'}2. The aluminum alloy thick plate according to claim 1 , wherein the aluminum alloy ...

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Номер записи: 80
11-01-2018 дата публикации

ALUMINUM PLATE AND COLLECTOR FOR STORAGE DEVICE

Номер: US20180013148A1
Автор: KAWAGUCHI Junji, KOMATSU Hiroshi, Matsuura Atsushi, Sawada Hirokazu
Принадлежит: FUJIFILM Corporation

An object of the present invention is to provide an aluminum plate which is excellent in terms of both step suitability and working characteristics and a collector for a storage device using the same. The aluminum plate of the present invention is an aluminum plate having a plurality of through-holes formed in a thickness direction, in which a thickness of the aluminum plate is 40 μm or less, an average opening diameter of the through-holes is 0.1 to 100 μm, an average opening ratio by the through-holes is 2% to 30%, a content of Fe is 0.03% by mass or more, and a ratio of the content of Fe to a content of Si is 1.0 or more. 1. An aluminum plate comprising:a plurality of through-holes formed in a thickness direction,wherein a thickness of the aluminum plate is 40 μm or less,an average opening diameter of the through-holes is 0.1 to 100 μm,an average opening ratio by the through-holes is 2% to 30%,a content of Fe is 0.03% by mass or more, and a ratio of the content of Fe to a content of Si is 1.0 or more.2. The aluminum plate according to claim 1 ,wherein recess portions which have an average opening diameter of 0.1 μm to 100 μm and are not penetrated are provided on at least one surface, and an occupancy ratio of the recess portions is 0.5% or more.3. The aluminum plate according to claim 1 ,wherein an arithmetic average roughness Ra of the surface is 0.2 μm or more.4. The aluminum plate according to claim 2 ,wherein an arithmetic average roughness Ra of the surface is 0.2 μm or more.5. The aluminum plate according to claim 1 ,wherein the aluminum plate has a rectangular shape or a square shape, andthe average opening ratio by the through-holes is 0% to 5% at peripheral portions of at least one pair of opposite sides out of two pairs of the opposite sides,here, the peripheral portion refers to a region covering 50 mm from an end portion of the aluminum plate which constitutes a side.6. The aluminum plate according to claim 2 ,wherein the aluminum plate has a ...

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Номер записи: 81
19-01-2017 дата публикации

SLAB CONTINUOUS CASTING APPARATUS

Номер: US20170014898A1
Автор: Osada Mototsugu, Shigeta Yoshifumi, TAKATA Atsushi, Yamamoto Kenji
Принадлежит:

The invention provides rotating a submerged nozzle during casting to arbitrarily change the discharge angle of molten metal, causing the molten metal in the mold for slab to be rotated and stirred. A slab continuous casting apparatus according to the invention supplies molten metal from a tundish to a water-cooled mold for slab through at least an upper nozzle, a slide valve and a submerged nozzle and solidified the molten metal and provided with a submerged-nozzle quick replacement mechanism. The slab continuous casting apparatus further includes a discharge-direction changing mechanism capable of arbitrarily changing discharge angle of the molten metal as viewed in a horizontal cross section, during casting, the discharge-direction changing mechanism being provided between a slide valve device for opening and closing the slide valve and the submerged nozzle. 15-. (canceled)6. A slab continuous casting apparatus in which molten metal is supplied from a tundish to a water-cooled mold for slab through at least an upper nozzle , a slide valve comprising plate bricks , and a submerged nozzle having discharge holes , in which discharge directions of the molten metal from the discharge holes are directed toward a longer side of the water-cooled mold and their directions are held so as to obtain a rotational flow , and to which a submerged-nozzle quick replacement mechanism is attached , wherein a discharge-direction changing mechanism capable of arbitrarily changing a discharge angle of the molten metal as viewed in a horizontal cross section , during casting , is provided between a slide valve device for opening and closing the slide valve and the submerged nozzle.7. The slab continuous casting apparatus according to claim 6 , wherein the water-cooled mold has a ratio of a length of a longer-side-wall to a length of a shorter-side-wall being equal to 5 or more.8. The slab continuous casting apparatus according to claim 6 , wherein the discharge-direction changing ...

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Номер записи: 82
18-01-2018 дата публикации

METHOD FOR CONTINUOUSLY CASTING SLAB

Номер: US20180015533A1
Автор: MURAKAMI Toshihiko, TAKAYA Shin, YOTSUHASHI Hiroyuki
Принадлежит:

To provide a continuous casting method according to which a slab difficult for surface cracking to appear can be manufactured, in a first water cooling step, the slab is cooled so that only a surface temperature of corner parts is below Arpoint, in a first recuperation step, the slab is recuperated so that the surface temperature of all the slab including the corner parts is no less than the Arpoint, in a second water cooing step, the slab is cooled so that the surface temperature of all the slab including the corner parts is below the Arpoint, and in a second recuperation step, the slab is recuperated so that the surface temperature of only a portion of the slab other than the corner parts is no less than the Arpoint. 1. A method for continuously casting a slab using a curved type or vertical bending type continuous casting machine , the method comprising:the step of cooling the slab just beneath a mold in a secondary cooling zone, the slab being withdrawn from the mold, the step further comprising: a first water cooling step, a first recuperation step that follows the first water cooling step, a second water cooling step that follows the first recuperation step, and a second recuperation step that follows the second water cooling step,{'sub': 3', '3, 'wherein the first water cooling step is a step of cooling the slab of which a surface temperature is no less than 1000° C., by supplying cooling water to wide surfaces of the slab, including that only a surface temperature of a corner part is below Arpoint, and a surface temperature of a portion of the slab other than the corner part is kept no less than Arpoint, the corner part being a region within 20 mm from an apex and edges of the slab,'}{'sub': '3', 'the first recuperation step is a step of recuperating the slab including that the surface temperature of all the slab including the corner part is no less than the Arpoint,'}{'sub': 3', '3, 'the second water cooing step is a step of cooling the slab of which the ...

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Номер записи: 83
18-01-2018 дата публикации

CONTINUOUS CASTING DEVICE FOR SLAB COMPRISING TITANIUM OR TITANIUM ALLOY

Номер: US20180015534A1
Автор: Kanahashi Hidetaka, KUROSAWA Eisuke, Nakaoka Takehiro, Oyama Hideto
Принадлежит: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

In the present invention the torch movement period is 20-40 seconds, with the torch movement period being the time required to move plasma torches (which heat the surface of molten metal in the casting mold) one time. The average heat input amount at multiple sites, which are obtained by dividing the initial solidification portion (which is where the molten metal makes contact with the casting mold and first solidifies) into multiple sites in the circumferential direction of the casting mold, is 1.0-2.0 MW/m. The molten metal advection time, which is the time required for electromagnetically stirred molten metal to travel the length of the torch heating region of the surface of the molten metal in the lengthwise direction of the casting mold, is 3.5 seconds or less. 1a plasma torch for heating a melt surface of a molten metal in a bottomless mold while moving over the melt surface of the molten metal in a predetermined moving pattern, the plasma torch being disposed above the bottomless mold;an electromagnetic stirring device for stirring at least the melt surface of the molten metal by electromagnetic stirring, the electromagnetic stirring device being disposed on a side of the bottomless mold; anda controller, wherein the controller controls the plasma torch and the electromagnetic stirring device;the method comprising:injecting molten metal prepared by melting titanium or a titanium alloy into the bottomless mold having a rectangular cross section;withdrawing the molten metal downward while being solidified; and a torch moving cycle T of 20 sec or more and 40 sec or less, the torch moving cycle T being a time required for the plasma torch to complete a single round of movement in the predetermined moving pattern and calculated by T=4W/(A·Vt), where 2W represents a length of a long side of the slab in a horizontal cross section, A represents the number of the plasma torch, and Vt represents an average moving speed of the plasma torch while moving in the ...

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Номер записи: 84
19-01-2017 дата публикации

COPPER ALLOY MATERIAL AND PRODUCTION METHOD THEREFOR

Номер: US20170016090A1
Автор: Fujito Keisuke, HATA Shohei, KURODA Hiromitsu, TSUJI Takayuki
Принадлежит:

A copper alloy material production method is provided. A copper raw material including not higher than 30 ppm by mass of oxygen is melted to form a molten copper. Not lower than 4 ppm by mass and not higher than 55 ppm by mass of titanium is added to the molten copper. After the adding of the titanium, not lower than 100 ppm by mass and not higher than 7000 ppm by mass of magnesium is added. 1. A copper alloy material production method , comprising:melting a copper raw material including not higher than 30 ppm by mass of oxygen to form a molten copper;adding not lower than 4 ppm by mass and not higher than 55 ppm by mass of titanium to the molten copper; andafter the adding of the titanium, adding not lower than 100 ppm by mass and not higher than 7000 ppm by mass of magnesium.2. The copper alloy material production method according to claim 1 , wherein in the adding of the titanium claim 1 , the titanium not less than the content of the oxygen included in the molten copper is added.3. The copper alloy material production method according to claim 1 , wherein in the adding of the titanium claim 1 , the titanium is added in such a manner that a ratio of the titanium to the oxygen included in the molten copper is 1:1 to 8:1.5. The copper alloy material production method according to claim 1 , further comprising:before the adding of the magnesium, removing an oxide of the titanium formed in the adding of the titanium.6. The copper alloy material production method according to claim 5 , wherein in the removing of the oxide claim 5 , an inert gas is bubbled into the molten copper.7. A copper alloy material claim 5 , consisting of:not higher than 30 ppm by mass of oxygen;not lower than 4 ppm by mass and not higher than 55 ppm by mass of titanium;not lower than 100 ppm by mass and not higher than 7000 ppm by mass of magnesium; andthe balance consisting of copper and inevitable impurities,wherein a titanium oxide is dispersed in a copper parent phase, while the magnesium ...

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Номер записи: 85
19-01-2017 дата публикации

COPPER-NICKEL-ZINC ALLOY CONTAINING SILICON

Номер: US20170016097A1
Автор: Kuhn Hans-Achim, LIEBSCH Rudolf
Принадлежит:

The invention includes a copper-nickel-zinc alloy with the following composition in weight %: Cu 47.0 to 49.0%, Ni 8.0 to 10.0%, Mn 0.2 to 0.6%, Si 0.05 to 0.4%, Pb 1.0 to 1.5%, Fe and/or Co up to 0.8%, the rest being Zn and unavoidable impurities, wherein the total of the Fe content and double the Co content is at least 0.1 weight % and wherein mixing silicides containing nickel, iron and manganese and/or containing nickel, cobalt and manganese are stored as spherical or ellipsoidal particles in a structure consisting of an α- and β-phase. The invention further relates to a method for producing semi-finished products from a copper-nickel-zinc alloy. 3. The copper-nickel-zinc alloy as claimed in claim 1 , characterized in that the ratio of the sum total of the proportions by weight of the elements Ni claim 1 , Co and Mn bound in silicides to the proportion by weight of the silicon bound in silicides is between 2.5 and 5.4. The copper-nickel-zinc alloy as claimed in claim 3 , characterized in that the ratio of the sum total of the proportions by weight of the elements Ni claim 3 , Co and Mn bound in silicides to the proportion by weight of the silicon bound in silicides is between 3 and 4.5.5. The copper-nickel-zinc alloy as claimed in claim 1 , characterized in that the ratio of the sum total of the proportions by weight of the elements Ni and Co bound in silicides to the proportion by weight of the manganese bound in silicides is at least 10.6. The copper-nickel-zinc alloy as claimed in claim 1 , characterized in that the ratio of the proportion by weight of the nickel bound in silicides to the proportion by weight of the cobalt bound in silicides is between 1.5 and 2.5.7. The copper-nickel-zinc alloy as claimed in claim 1 , characterized in that the areal density of the silicides having a particle diameter of at most 2 μm is at least 20 per 5000 μm. This is a divisional of prior U.S. application Ser. No. 14/383,261, which was the national stage of International ...

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Номер записи: 86
17-01-2019 дата публикации

SYSTEM FOR MAKING THIN FLOOR PLATE

Номер: US20190015894A1
Автор: Young Eric
Принадлежит:

A method of making floor plate includes assembling a pair of casting rolls laterally disposed to form a nip, assembling a hot rolling mill downstream of the nip having work rolls with a surface pattern forming the negative of a raised slip-resistant pattern desired in a floor plate, introducing molten metal through at least one metal delivery nozzle to form a casting pool supported on the casting rolls above the nip; counter rotating the casting rolls to form shells on the casting surfaces of the casting rolls to cast metal strip of less than 2.2 mm thickness downwardly from the nip, and delivering the cast metal strip to and through the hot rolling mill to form by the negative of the slip-resistant pattern on the work rolls a raised slip-resistant pattern of between 0.3 and 0.7 mm in height in a floor plate of less than 1.7 mm thickness. 17-. (canceled)8. A system for making a thin floor plate comprising:a pair of casting rolls laterally disposed to form a nip between them and between side dams adapted to maintain a molten metal pool supported above the nip by the casting rolls and to discharge formed strip downwardly through the nip, the casting rolls capable of being counter rotated to form shells on casting surfaces of the casting rolls brought together at the nip to cast metal strip of less than 2.2 mm thickness downwardly from the nip; anda single hot rolling mill downstream of the nip, the single hot rolling mill including a single pair of work rolls, one work roll of the pair of work rolls including a surface pattern forming a negative of a raised slip-resistant pattern desired in a floor plate between 0.3 and 0.7 mm in height, with a delivered floor plate thickness of less than 1.7 mm.9. The system of claim 8 , further comprising a metal delivery system for delivering molten metal to an elongated delivery nozzle disposed in operable relation to the metal delivery system for forming a casting pool supported on the casting roll above the nip.10. The system of ...

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Номер записи: 87
21-01-2021 дата публикации

METHOD FOR MANUFACTURING ALUMINUM ALLOY EXTERIOR MATERIAL FOR SMART DEVICE

Номер: US20210016344A1
Автор: Euh Kwang Jun, Kim Hyoung Wook, Kim Su Hyeon, LEE Yun Soo
Принадлежит:

Provided is a method for manufacturing an aluminum alloy exterior material for smart devices which is formed not by extrusion or die casting but by a strip casting method using a rotating mold, and an aluminum alloy exterior material manufactured by the method. In accordance with an embodiment, the method includes: preparing a molted aluminum alloy; casting the molten aluminum alloy into a sheet shape using a rotating mold to form an aluminum alloy cast sheet; and anodizing the aluminum alloy cast sheet, wherein in the forming of an aluminum alloy cast sheet, X in Equation 1 below may have a value in the range of greater than 0 and equal to or less than 0.15. 1. A method for manufacturing an aluminum alloy exterior material for smart devices , the method comprising:preparing a molted aluminum alloy;casting the molten aluminum alloy into a sheet shape using a rotating mold to form an aluminum alloy cast sheet; andanodizing the aluminum alloy cast sheet, wherein {'br': None, 'i': X', 'W', '+W', '+W', '+W, 'sub': Zn', 'Mg', 'Cu', 'Si, '=()/TC\u2003\u2003'}, 'in the forming of an aluminum alloy cast sheet, X in Equation 1 below has a value in a range of greater than 0 to equal to or less than 0.15.'}{'sub': Zn', 'Mg', 'Cu', 'Si, 'where W+W+W+Wis the total content (wt %) of the zinc (Zn), magnesium (Mg), copper (Cu) and silicon (Si) in the aluminum alloy, and TC is the thermal conductivity (W/m·K) of the rotating mold.'}2. The method of claim 1 , further comprising heat-treating the aluminum alloy cast sheet after performing forming of the aluminum alloy cast sheet.3. The method of claim 2 , wherein the heat-treating comprises performing a solution treatment for 30 minutes to 10 hours at a temperature of 420° C. to 570° C.4. The method of claim 3 , wherein the heat-treating further comprises claim 3 , after performing the solution treatment claim 3 , performing an aging treatment for 1 hour to 30 hours at a temperature of 100° C. to 250° C.5. The method of ...

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Номер записи: 88
16-01-2020 дата публикации

Flat steel semi-finished product, method for producing a component, and use thereof

Номер: US20200017941A1
Автор: Cristina Matthey
Принадлежит: Thyssenkrupp AG, THYSSENKRUPP STEEL EUROPE AG

A semifinished flat steel product (1) includes a first layer (1.1) of a martensitic steel alloy having a tensile strength of >1200 MPa and/or a hardness of >370 HV10, and at least one second layer (1.2, 1.2′) of a soft steel alloy having a tensile strength of <600 MPa and/or a hardness of <190 HV10 which is fully and cohesively bonded to the first layer (1.1).

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Номер записи: 89
22-01-2015 дата публикации

7XXX ALUMINUM ALLOYS, AND METHODS FOR PRODUCING THE SAME

Номер: US20150020930A1
Автор: Kamat Rajeev G., Lin Jen C., Newman John M., Sawtell Ralph R.
Принадлежит:

New 7xxx aluminum alloy bodies and methods of producing the same are disclosed. The new 7xxx aluminum alloy bodies may be produced by preparing the aluminum alloy body for post-solutionizing cold work, cold working by at least 25%, and then thermally treating. The new 7xxx aluminum alloy bodies may realize improved strength and other properties. 1. A method comprising: (i) wherein the aluminum alloy strip includes 2.0-22 wt. % zinc, wherein the zinc is the predominate alloying element of the aluminum alloy strip other than aluminum,', (A) delivering molten aluminum metal comprising the 2.0-22 wt. % zinc, wherein the zinc is the predominate alloying element of the aluminum alloy strip other than aluminum, to a pair of spaced apart rotating casting rolls defining a nip therebetween;', (I) first forming two solid outer regions adjacent surfaces of the casting device rolls;', '(II) second forming a semi-solid inner region containing dendrites of the metal;', '(III) wherein the inner region is located between the two outer concentration regions;', '(IV) wherein the first forming and second forming steps are completed concomitant to one another;', '(V) breaking the dendrites in the inner region at or before the nip; and, '(B) advancing the metal between surfaces of the casting device rolls, wherein the advance comprises, '(C) solidifying the semi-solid inner region to produce the aluminum alloy body comprised of the inner region and the outer regions;, '(ii) wherein the preparing step comprises continuously casting the aluminum alloy strip, the continuously casting step comprising, '(iii) wherein the preparing step comprises solutionizing of the aluminum alloy strip;, '(a) preparing an aluminum alloy strip for post-solutionizing cold work,'}(b) after the preparing step (a), cold working the aluminum alloy strip by at least 25%; and(c) after the cold working step (b), thermally treating the aluminum alloy strip;wherein the cold working and the thermally treating steps are ...

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Номер записи: 90
22-01-2015 дата публикации

NEGATIVE ACTIVE MATERIAL, NEGATIVE ELECTRODE AND LITHIUM BATTERY INCLUDING THE NEGATIVE ACTIVE MATERIAL, AND METHOD OF PREPARING THE NEGATIVE ACTIVE MATERIAL

Номер: US20150021516A1
Автор: Chu Hee-Young, Jeong Chang-Ui, Kim Jae-Hyuk, Kim Young-Ugk, Kwon Seung-Uk, Matulevich Yury, Park Yo-Han, Suh Soon-Sung, Yoon Duk-Hyoung
Принадлежит:

A negative active material, a lithium battery including the negative active material, and a method of preparing the negative active material. The negative active material includes a silicon-based alloy including Si, Al, and Fe. The silicon-based alloy includes an active phase of silicon nanoparticles and an inactive phase of SiAlFeand SiFe in a ratios suitable to improve the lifespan of the lithium battery. 1. A negative active material comprising a silicon-based alloy comprising silicon nanoparticles dispersed in an alloy matrix , the alloy matrix comprising SiAlFeand SiFe , wherein the ratio of the sum of the atomic fractions of Si , Al , and Fe as SiAlFeto the sum of the atomic fractions of Si and Fe as SiFe is about 2 to about 12.2. The negative active material of claim 1 , wherein the ratio of the sum of the atomic fractions of Si claim 1 , Al claim 1 , and Fe as SiAlFeto the sum of the atomic fractions of Si and Fe as SiFe is about 4 to about 10.3. The negative active material of claim 1 , wherein the silicon-based alloy comprises about 40 at % to about 80 at % of Si claim 1 , about 10 at % to about 40 at % of Al claim 1 , and about 5 at % to about 25 at % of Fe claim 1 , and the total sum of atomic fractions of Si claim 1 , Al claim 1 , and Fe is 100 at %.4. The negative active material of claim 1 , wherein in the silicon-based alloy claim 1 , a ratio of the atomic fraction of Al to the atomic fraction of Fe is about 0.7 to about 1.1.5. The negative active material of claim 1 , wherein the silicon-based alloy is a pulverized powder having a D50 of about 0.3 μm to about 10 μm.6. The negative active material of claim 1 , wherein the silicon-based alloy comprises inactive silicon and active silicon claim 1 , the alloy matrix comprising the inactive silicon and the silicon nanoparticles comprising the active silicon.7. The negative active material of claim 6 , wherein in the silicon-based alloy claim 6 , an amount of the active silicon is about 40 at % to about ...

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Номер записи: 91
28-01-2016 дата публикации

TWIN ROLL STRIP CASTING METHOD

Номер: US20160023268A1
Автор: HWANG Suk Kyun, KWEON Oh Seong, Park Cheol Min
Принадлежит:

There is provided a twin roll strip casting method. The twin roll strip casting method includes: continuously producing a strip by forming a molten steel pool using rotating rolls and edge dams contacting ends of the rotating rolls, and supplying molten steel to the molten steel pool; and lifting the edge dams by taking an amount of wear of the edge dams, occurring during casting, into consideration. 1. A twin roll strip casting method comprising:continuously producing a strip by forming a molten steel pool using rotating rolls and edge dams contacting ends of the rotating rolls, and supplying molten steel to the molten steel pool; andlifting the edge dams by taking an amount of wear of the edge dams, occurring during casting, into consideration.2. The twin roll strip casting method of claim 1 , wherein the edge dams are lifted while varying an edge dam lift ratio defined as a ratio of an increased height of the edge dams to the amount of wear of the edge dams.3. The twin roll strip casting method of claim 2 , wherein the edge dam lift ratio comprises a first lift ratio used in a case in which the amount of wear of the edge dams is less than a switch value and a second lift ratio used in a case in which the amount of wear of the edge dams is equal to or greater than the switch ratio claim 2 , and the first lift ratio is less than the second lift ratio.4. The twin roll strip casting method claim 3 , wherein the switch value ranges from 10 mm to 25 mm.5. The twin roll strip casting method of claim 4 , wherein the second lift ratio is 1.1 to 1.5 times as great as the first lift ratio.6. The twin roll strip casting method of claim 2 , wherein the edge dam lift ratio is varied such that slopes formed on surfaces of the edge dams claim 2 , worn-down by contact with the rolls have a continuously varying shape.7. The twin roll strip casting method of claim 2 , wherein the edge dam lift ratio is varied such that slopes formed on surfaces of the edge dams claim 2 , worn-down ...

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Номер записи: 92
21-01-2021 дата публикации

Method for manufacturing bonding wire and manufacturing apparatus thereof

Номер: US20210020598A1
Автор: Mun-Sub SONG
Принадлежит: Individual

A method for manufacturing a bonding wire includes: putting a surface layer metal of a bonding wire in a crucible having a die cooler provided at the lower part thereof and melting the same; putting a main component metal core of the bonding wire in a core guide located at the upper part of the die cooler of the crucible and heating the core guide to the melting point or below of the metal core; transferring the metal core toward the die cooler so as to allow the molten surface layer metal to be injected to the surface of the metal core; and manufacturing a 50 □m to 350 □m bonding wire from the cast wire precursor by using a drawing die.

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Номер записи: 93
25-01-2018 дата публикации

MEASURING METHOD, SYSTEM AND SENSOR FOR A CONTINUOUS CASTING MACHINE

Номер: US20180021849A1
Автор: DE MONTE Stefano, MAZZA Isabella, SPAGNUL Stefano
Принадлежит:

Mould provided with a detection system of the level a liquid metal within a crystallizer of the mould in which the detection system is based on the transmission of at least one detection signal transmitted towards the crystallizer and a phase of reception of at least one received measuring signal dependent on the transmitted detection signal and mould and continuous casting machine provided with said mould. 1. Mould for the production of steelwork semi-finished products by casting a liquid metal within a crystallizer of said mould in which the mould includes a detection system provided with calculation and measuring means for detecting a position of a meniscus or level of said liquid metal within said crystallizer ,wherein said detection system comprises at least one transmitter of a detection signal transmitted towards said crystallizer and at least one receiver of at least one received measuring signal dependent on said transmitted detection signal wherein said transmitter is at least one first ultrasonic element configured as a transmitter of a transmission ultrasonic elastic wave and said receiver is at least one second ultrasonic element configured as a receiver of a received ultrasonic elastic wave, said first ultrasonic element being oriented according to a direction of transmission towards a wall of said crystallizer containing said liquid metal, said first ultrasonic element is oriented according to a direction of transmission such that said at least one transmission ultrasonic elastic wave is inclined according to an angle of incidence Ai with respect to said wall of the crystallizer,characterised in that the ultrasonic elements are located in correspondence of a same side of the mould in such a way that said second ultrasonic element is placed in a spaced position with respect to the position of said first ultrasonic element according to a direction essentially parallel with respect to the longitudinal development of said wall of said crystallizer,and ...

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Номер записи: 94
10-02-2022 дата публикации

Flow Speed Control In Continuous Casting

Номер: US20220040755A1
Автор: Jacobson Nils Peter, Lehman Anders, Sedén Martin, Yang Hongliang
Принадлежит:

An arrangement for controlling flow speed in a mold for continuous casting of metal includes: at least two first front cores with associated first magnetic coils arranged on one side of the mold; at least two second front cores with associated second magnetic coils arranged on an opposite side of the mold in substantial alignment with the first front cores; an external magnetic loop connecting the second front cores to the first front cores, to allow a one-directional magnetic flux to pass through the mold from the first front cores to the second front cores or vice versa; and a control interface enabling independent control of two subsets of the first magnetic coils. 119-. (canceled)20. An arrangement for controlling flow speed in a mold for continuous casting of metal , comprising:at least two first front cores with associated first magnetic coils arranged on one side of the mold;at least two second front cores with associated second magnetic coils arranged on an opposite side of the mold in substantial alignment with the first front cores;an external magnetic loop connecting the second front cores to the first front cores, to allow a one-directional magnetic flux to pass through the mold from the first front cores to the second front cores or vice versa; anda control interface enabling independent control of two subsets of the first magnetic coils,characterized in that the front cores are provided with reconfigurable flux-shaping elements for allowing a spatially non-uniform magnetic flux to pass through the mold.21. The arrangement of claim 20 , wherein the control interface enables independent control of two subsets of the second magnetic coils.22. The arrangement of claim 20 , wherein said subsets of the first or second magnetic coils are differently positioned with respect to a lateral direction of the mold.23. The arrangement of claim 20 , wherein each of said subsets of the first or second magnetic coils includes one or more magnetic coils.24. The ...

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Номер записи: 95
26-01-2017 дата публикации

HIGH-STRENGTH COLD-ROLLED STEEL SHEET WITH EXCELLENT MATERIAL HOMOGENEITY AND PRODUCTION METHOD THEREFOR

Номер: US20170022582A1
Автор: Hasegawa Kohei, Takashima Katsutoshi
Принадлежит: JFE STEEL CORPORATION

A high-strength cold-rolled steel sheet having good ductility, hole expandability, and delayed fracture resistance and being excellent in material homogeneity. The steel sheet has a chemical composition containing, in mass %, C: 0.15 to 0.25%, Si: 1.2 to 2.2%, Mn: 1.7 to 2.5%, P: 0.05% or less, S: 0.005% or less, Al: 0.01 to 0.10%, N: 0.006% or less, Ti: 0.003 to 0.030%, B: 0.0002 to 0.0050%, and Fe and inevitable impurities. The steel sheet has a microstructure that includes ferrite having an average crystal grain diameter of 4 μm or less at a volume fraction of 5 to 20%, retained austenite at a volume fraction of 5% or less, including 0%, and tempered martensite at a volume fraction of 80 to 95%. Additionally, the mean free path of the ferrite is 3.0 to 7.5 μm. 1. A high-strength cold-rolled steel sheet with excellent material homogeneity , the high-strength cold-rolled steel sheet having a chemical composition comprising:C: 0.15 to 0.25%, by mass %;Si: 1.2 to 2.2%, by mass %;Mn: 1.7 to 2.5%, by mass %;P: 0.05% or less, by mass %;S: 0.005% or less, by mass %;Al: 0.01 to 0.10%, by mass %;N: 0.006% or less, by mass %;Ti: 0.003 to 0.030%, and by mass %;B: 0.0002 to 0.0050%, by mass %; andFe and inevitable impurities, the steel sheet has a microstructure including (i) ferrite having an average crystal grain diameter of 4 μm or less at a volume fraction of 5 to 20%, (ii) retained austenite at a volume fraction of 5% or less, including 0%, and (iii) tempered martensite at a volume fraction of 80 to 95%, and', 'the ferrite has a mean free path of 3.0 to 7.5 μm., 'wherein2. The high-strength cold-rolled steel sheet with excellent material homogeneity according to claim 1 , wherein the chemical composition further comprises Nb: 0.05% or less claim 1 , by mass %.3. The high-strength cold-rolled steel sheet with excellent material homogeneity according to claim 1 , wherein the chemical composition further comprises V: 0.01 to 0.30% claim 1 , by mass %.4. The high-strength ...

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Номер записи: 96
24-01-2019 дата публикации

HIGH FLUIDITY IRON ALLOY FORMING PROCESS AND ARTICLES THEREFROM

Номер: US20190022736A1
Автор: Guillen Pedro, MOROZ Nicholas Anton
Принадлежит:

A process of casting an article includes an iron alloy being heated to a pour temperature of between 1460° C. and 1650° C. and a fluidity length of greater than 23 millimeters to form a melt. The melt is poured into a mold and allowed to solidify to the article. The article is then removed from the mold. A process of forging an article is also provided that includes an iron alloy workpiece being heated to a temperature of between 600° C. and 1200° C. The heated workpiece is then placed into a die set and repeatedly struck with a forging die. The workpiece flows into the die cavity in response to the striking. The workpiece is then removed from the die cavity. The resulting articles and the alloy from which such articles are formed are also provided. 1. A process of casting an article comprising:heating an iron alloy to a pour temperature of between 1460° C. and 1650° C. and a fluidity length of greater than 23 millimeters to form a melt;pouring the melt into a mold;allowing the melt to solidify to the article; andremoving the article from the mold.2. A process of forging an article comprising:heating an iron alloy workpiece to a temperature of between 600° C. and 1200° C.;inserting the heated workpiece into a die set;repeatedly striking the workpiece with a forging die;allowing the workpiece flow into the die cavity; andremoving the workpiece from the die cavity.3. The process of wherein the mold has a minimal interior dimension reflected in the article of between 1 and 5 millimeters.4. (canceled)5. (canceled)6. The process of wherein the pour temperature is between 1460° C. and 1650° C.7. The process of wherein the alloy composition is about 90% Fe claim 1 , 0.1-2.0% C claim 1 , 1.5-5% Si claim 1 , 0.1-0.6% Mn claim 1 , 0.1-2% Cu claim 1 , 0.5-5% Ni claim 1 , 0.01-1% Mo claim 1 , with the remainder being trace elements and a liquidus temperature (T) of less than 1515° C.8. The process of wherein Tis 1536-K(% C)-8(% Si)-5(% Mn)-30(% P)-25(% S)-1.7(% Al)-5(% Cu)-1.5 ...

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Номер записи: 97
24-01-2019 дата публикации

TOOLING FOR PRODUCING A METAL PRODUCT BY FEED CASTING

Номер: US20190022744A1
Автор: BALLU Arnaud, BLAIS Soizic, VALENTIN Bernard
Принадлежит: Constellium Issoire

A tooling for producing a metal product by feed casting, comprising a mold comprising a preheater, an ingot mold (), a movable bottom that moves in a main direction X and a transition ring interposed between the preheater and the ingot mold (). The tooling has a clamping ring () transmitting a clamping force (F) to the transition ring () oriented towards the ingot mold (), a holding mechanism that positively locks the clamping ring (), and an axial relief mechanism configured so as to vary between an inactive state in which the holding mechanism exerts said holding force (F) on the clamping ring () such that the clamping ring () exerts said clamping force (F) on the transition ring () and an active state in which the axial relief mechanism resists the action applied by the holding mechanism on the clamping ring in the inactive state. 1. A tooling for manufacturing a metal product by hot top casting , including a mold comprising:a hot top through which the metal in liquid state is poured,{'b': '10', 'an ingot mold () in which solidification of the metal occurs, equipped with a support with integrated cooling,'}{'b': '10', 'a movable base moving in a main direction, parallel to the main axis of the ingot mold (),'}{'b': 11', '10, 'a transition ring () interposed between the hot top and the ingot mold (),'}{'b': 12', '1', '11', '10', '12', '2', '12', '11', '2', '12', '12', '1', '11', '12', '12', '12', '11', '10, 'the tooling being characterized in that it comprises a clamping ring () able to transmit a clamping force (F) to the transition ring () oriented towards the ingot mold () in the main direction (X), a holding mechanism ensuring positive locking of the clamping ring () and able to exert a holding force (F) on the clamping ring () directed towards the transition ring () along the main direction (X), and an axial load-shedding mechanism configured to vary between an inactive state in which the holding mechanism exerts said holding force (F) on the clamping ring () ...

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Номер записи: 98
10-02-2022 дата публикации

Copper alloy tube for heat exchanger with excellent thermal conductivity and breaking strength and method of manufacturing the same

Номер: US20220042154A1
Автор: Chang Ho Oh, Dae Kyong Kim, Do Youl LEE, Do Young Chung, Dong Jun KWAK, Ho Rim CHUNG
Принадлежит: LS Metal Co Ltd

The present disclosure relates to a copper alloy tube for a heat exchanger having excellent breaking strength and a method of manufacturing the same, and more particularly, to a Cu alloy tube having excellent breaking strength and thermal conductivity and suitable for use in a heat exchanger, and a method of manufacturing the same.

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Номер записи: 99
28-01-2021 дата публикации

MOLD EQUIPMENT AND CONTINUOUS CASTING METHOD

Номер: US20210023610A1
Автор: OGA Shintaro, Okada Nobuhiro, TSUKAGUCHI Yuichi
Принадлежит: NIPPON STEEL CORPORATION

This mold equipment is mold equipment provided with a mold, an electromagnetic brake device, and a control device. An immersion nozzle is provided with a pair of discharge holes of molten metal, the electromagnetic brake device is provided with an iron core including a pair of teeth and coils wound around the respective teeth, the coils on one side are connected in series in a first circuit, the coils on the other side are connected in series in a second circuit, and the control device is able to independently control voltage and current applied to each of the first and second circuits for each circuit, detects a drift of a discharge flow between the pair of discharge holes on the basis of the voltage applied to the coils in the first circuit and the voltage applied to the coils in the second circuit, and controls the current flowing through the first circuit and the current flowing through the second circuit on the basis of a detection result. 1. A mold equipment comprising:a mold for continuous casting;an electromagnetic brake device that applies an electromagnetic force in a direction to brake a discharge flow to the discharge flow of molten metal from an immersion nozzle into the mold; anda control device that controls a power supply to the electromagnetic brake device,wherein the immersion nozzle is provided with a pair of discharge holes of the molten metal on both sides in a mold long side direction of the mold,the electromagnetic brake device is installed on an outer side surface of each of a pair of long side mold plates in the mold, and is provided with an iron core including a pair of teeth provided so as to face the long side mold plate on both sides of the immersion nozzle in the mold long side direction, and coils wound around the respective teeth,the coils on one side in the mold long side direction of electromagnetic brake devices are connected in series in a first circuit,the coils on another side in the mold long side direction of the ...

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Номер записи: 100