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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 4646. Отображено 100.
19-07-2012 дата публикации

Hot workability of metal alloys via surface coating

Номер: US20120183708A1
Автор: Ramesh S. Minisandram, Richard L. Kennedy, Robin M. Forbes Jones
Принадлежит: ATI Properties LLC

A method of processing an alloy ingot or other alloy workpiece to reduce thermal cracking may generally comprise depositing a glass material onto at least a portion of a surface of a workpiece, and heating the glass material to form a surface coating on the workpiece that reduces heat loss from the workpiece. The present disclosure also is directed to an alloy workpieces processed according to methods described herein, and to articles of manufacture including or made from alloy workpieces made according to the methods.

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Номер записи: 1
09-08-2012 дата публикации

Apparatus and method for protecting mounted almen strips

Номер: US20120199506A1
Автор: Thomas A. Beach, Walter A. Beach
Принадлежит: HYDRO HONING LABORATORIES Inc D/B/A PEENING TECHNOLOGIES

A protected test strip holder according to the present invention includes a test strip holder onto which a test strip, such as for example an Almen strip, may be mounted using fasteners provided on the test strip holder. A protective covering is form-fitted to the test strip holder and, optionally, to the test strip holder having a test strip mounted thereon. The present invention also comprises a method for protecting and storing a test strip holder that includes providing a test strip holder, forming or molding a protective covering form-fitting to the test strip holder, and placing the protective covering over the test strip holder. The test strip holder may have a test strip mounted thereon prior to molding the form-fitting protective covering.

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Номер записи: 2
08-11-2012 дата публикации

Austenitic stainless steel pipe excellent in steam oxidation resistance and manufacturing method therefor

Номер: US20120279607A1
Автор: Katsuki Tanaka, Masahiro Seto, Mitsuru Yoshizawa, Yoshitaka Nishiyama
Принадлежит: Sumitomo Metal Industries Ltd

There is provided an austenitic stainless steel pipe excellent in steam oxidation resistance. The austenitic stainless steel pipe excellent in steam oxidation resistance contains, by mass percent, 14 to 28% of Cr and 6 to 30% of Ni, and is configured so that a region satisfying the following Formula exists in a metal structure at a depth of 5 to 20 μm from the inner surface of the steel pipe: (α/β)×δ/ε×100≧0.3 where the meanings of symbols in the above Formula are as follows: α: sum total of the number of pixels of digital image in region in which orientation difference of adjacent crystals detected by electron backscattering pattern is 5 to 50 degrees β: the number of total pixels of digital image in region of measurement using electron backscattering pattern ε: analysis pitch width of electron backscattering pattern (μm) δ: grain boundary width (μm).

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Номер записи: 3
15-11-2012 дата публикации

High-strength spring steel

Номер: US20120285585A1
Автор: Nao Yoshihara, Sayaka Nagamatsu, Tomotada Maruo
Принадлежит: Kobe Steel Ltd

A spring steel contains 0.15-0.40% carbon, 1-3.5% silicon, 0.20-2.0% manganese, 0.05-1.20% chromium, at most 0.030% phosphorus, at most 0.02% sulfur, and at least one of the following: 0.005-0.10% titanium, 0.005-0.05% niobium, and at most 0.25% vanadium. The remainder of said spring steel includes iron and unavoidable impurities. The carbon equivalent (Ceq 1 ) of the provided spring steel, as calculated by formula (1), is at most 0.55. (1) Ceq 1 =[C]+0.108×[Si]−0.067×[Mn]+0.024×[Cr]−0.05×[Ni]+0.074×[V]. In the formula (1), each symbol in brackets represents the content (mass %) of the corresponding element.

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Номер записи: 4
28-03-2013 дата публикации

Method and apparatus for surface enhancement

Номер: US20130074561A1
Автор: Daniel A. Woodward, Daniel G. Alberts, Nicholas Cooksey, Thomas J. Butler
Принадлежит: Ormond Llc

Systems and methods for generating beneficial residual stresses in a target material by generating cavitation shock waves through the use of a cavitation intensification conditioner. Shock waves emanate through the target material from collapsing cavitation voids in a liquid jet to generate residual stresses without significantly deforming the surface of the target material. A high pressure liquid is accelerated through a submerged peening nozzle to generate a high-speed liquid cavitating jet that is further intensified and controlled by use of the cavitation intensification conditioner.

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Номер записи: 5
16-05-2013 дата публикации

Spring and manufacture method thereof

Номер: US20130118655A1
Автор: Kosuke Shibairi, Shimpei Kurokawa, Takeshi Suzuki, Yoshiki Ono
Принадлежит: NHK Spring Co Ltd

A spring consists of, by mass %, 0.5 to 0.7% of C, 1.0 to 2.0% of Si, 0.1 to 1.0% of Mn, 0.1 to 1.0% of Cr, not more than 0.035% of P, not more than 0.035% of S, and the balance of Fe and inevitable impurities. The spring has a structure including not less than 65% of bainite and 4 to 13% of residual austenite by area ratio in a cross section. The spring has a compressive residual stress layer in a cross section from a surface to a depth of 0.35 mm to D/4, in which D (mm) is a circle-equivalent diameter of the cross section. The spring has a high hardness layer with greater hardness than a center portion by 50 to 500 HV from a surface to a depth of 0.05 to 0.3 mm.

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Номер записи: 6
16-05-2013 дата публикации

Apparatus and method for imparting selected topographies to aluminum sheet metal

Номер: US20130122327A1
Автор: David E. Coleman, Julie A. Wise, June M. Epp, Neville C. Whittle, Norman J. Panseri, Patricia A. Stewart, Salvador A. Marcilla Gomis, Shen Sheu, Tom J. Kasun
Принадлежит: David E. Coleman, Julie A. Wise, June M. Epp, Neville C. Whittle, Norman J. Panseri, Patricia A. Stewart, Salvador A. Marcilla Gomis, Shen Sheu, Tom J. Kasun

A method for surface treating work rolls to produce isotropic textured aluminum sheet features shot-peening the surface of the working rolls that produce the sheet. The media may be steel balls, such as ball bearings or other media, such as glass or ceramic balls, depending upon the optical properties desired for the aluminum sheet, e.g., in terms of diffuseness or brightness of reflection. The various parameters of shot-peening can be varied to accommodate given properties of the roll, such as hardness and existing surface texture to achieve a given desired surface texture. A sheet surface with target properties and the work roll processing needed to produce it may be generated by computer modeling.

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Номер записи: 7
27-06-2013 дата публикации

METHOD FOR SHOT PEENING

Номер: US20130160510A1
Автор: KOBAYASHI Yuji, Tsuji Toshiya
Принадлежит:

The present invention is to provide a method for shot peening for producing a compressive residual stress that exceeds 60% of the yield strength at 0.2% offset without using stress shot peening. Shot media are peened onto a processed steel that has an amount of retained austenite in a range between 5 to 30%, and any change in the amount of retained austenite is controlled to be in a range of 2 to 30% before and after shot peening to produce the compressive residual stress in the processed steel. 2. The method for shot peening of claim 1 , wherein a change in the amount of retained austenite at the depth where the maximum compressive residual stress is generated is controlled to be in a range of 2 to 30% before and after shot peening to produce a compressive residual stress in the processed steel.3. The method for shot peening of or claim 1 , wherein the processed steel is a gas carburized steel. The present invention relates to a method for shot peening. Specifically, it relates to a method for shot-peening a steel.Conventionally, shot peening has been known to produce compressive residual stresses to improve the fatigue strength of parts made of a steel (see authored by the Society of Shot Peening Technology of Japan; Fatigue of Metals and Shot Peening; published by Gendai Kogaku-sha; 2004). Further, it has been known that increasing the maximum value of compressive residual stresses is very effective in improving the fatigue strength of the parts (see Masahiko Mitsubayashi, Takashi Miyata, and Hideo Aihara; Prediction of Improvement in Fatigue Strength by Shot Peening and Selection of Most Effective Peening Conditions; Transactions of JSME, Vol. 61, No. 586 (June, 1995) pp. 28-34).However, it is also known that the maximum value of compressive residual stresses produced by shot peening is approximately 60% of the yield strength at 0.2% offset (Hideki Okada, Akira Tange, and Kotoji Ando; Relationship among Specimen's Hardness, Residual Stress Distribution and Yield ...

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Номер записи: 8
04-07-2013 дата публикации

Method for making patterns on metal article and the resulting metal article

Номер: US20130171473A1
Автор: Gui-Yun Yang, Po-Feng Ho, Quan Zhou, Xin-Wu Guan
Принадлежит: Fih Hong Kong Ltd, Shenzhen Futaihong Precision Industry Co Ltd

A method for making patterns on a metal article comprises providing a metal substrate having an outer surface. A light-absorbing coating is formed on selected regions of the outer surface to reduce the surface laser reflectivity of the metal substrate. The selected regions cooperatively have a shape of a desired pattern. The selected regions are treated by laser-quenching, thereby hardening the selected regions. The outer surface is sandblasted, enabling the outer surface besides the selected regions to have a greater surface roughness than the selected regions. A metal article made by the method is also provided.

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Номер записи: 9
15-08-2013 дата публикации

Magnesium alloy sheet having improved formability at room temperature, and method for manufacturing same

Номер: US20130209309A1
Автор: Dae Yong Kim, Ji Hoon Kim, Kwang Seok Lee, Sang Woo Kim, Seong Hoon Kang, Yong Nam Kwon, Young Seon Lee
Принадлежит: Korea Institute of Machinery and Materials KIMM

Provided are a magnesium alloy sheet having improved formability at room temperature and a method for manufacturing same. According to one embodiment of the present invention, the method for manufacturing the magnesium alloy sheets having improved formability at room temperature is characterized by comprising a first pretreatment step of applying residual compression stress to the surface the magnesium alloy raw material.

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Номер записи: 10
22-08-2013 дата публикации

SHOT-TREATMENT APPARATUS

Номер: US20130213104A1
Автор: Yamamoto Masatoshi
Принадлежит:

The present invention aims to provide a shot-treatment apparatus which allows a high throughput of workpieces with the least possible idle time while achieving a uniform shot-treatment effect on workpieces. The shot-treatment apparatus of the present invention has a rotatable main table located in the place where both a projection area to be projected upon by the shot from a projecting device and a non-projection area are included. A plurality of satellite tables for placing workpieces are rotatably mounted on the main table Each satellite table has a driven shaft which is in parallel with a main shaft of the main table The shot is projected from the projecting device against the workpiece that is placed on the satellite table The workpiece that is placed on the satellite table is held down by a holding member of a holding assembly The holding member rotates along with the workpiece 1. A shot-treatment apparatus comprising;a projecting device for projecting shot with compressed air through a nozzle against a workpiece;a rotatable main table located in a place where both a projection area to be projected upon by the shot from the projecting device and a non-projection area other than the projection area are included;a plurality of rotatable satellite tables mounted on the main table, wherein each of the satellite tables for placing workpieces has a driven shaft in parallel with a main shaft of the main table;a holding assembly disposed above the projection area of the main table, wherein the holding assembly holds down the workpiece placed on the satellite table with a holding member which is configured to be rotatable along with the workpiece.2. The shot-treatment apparatus of further comprises a rotation-sensing means for detecting the rotation of the holding member.3. The shot-treatment apparatus of or further comprising:a dividing assembly which rotates the main table about the main shaft in a stepwise manner by a specific angle which is predetermined based on ...

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Номер записи: 11
22-08-2013 дата публикации

Method for the production of a one-piece rotor area and one-piece rotor area

Номер: US20130216391A1
Автор: Goetz G. FELDMANN
Принадлежит: Rolls Royce Deutschland Ltd and Co KG

The present invention describes a method for the production of a one-piece rotor area, preferably of a jet engine. The rotor area includes an annular base body and several, circumferentially distributed blade elements extending essentially radially from the base body. Residual stresses are imparted to the blade elements in surface-near areas by way of roller compression using a rolling tool introduced between the blade elements. During roller compression, one each area of a blade element is arranged between areas of the rolling tool, with longitudinal sides of the blade element being simultaneously roller-compressed. According to the present invention, the rolling tool is radially introduced between the blade elements and the surfaces of the blade elements are roller-compressed, thus at least the blade elements having a roller-compressed surface.

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Номер записи: 12
12-09-2013 дата публикации

Method and apparatus for non-contact surface enhancement

Номер: US20130233040A1
Автор: Daniel A. Woodward, Daniel G. Alberts, Nicholas Cooksey, Thomas J. Butler
Принадлежит: Ormond Llc

Systems and methods to generate beneficial residual stresses in a material, clean, strip coatings from, or roughen surfaces by generating cavitation shock waves without damaging the surface of the material. Shock waves emanate through the target material from collapsing cavitation voids in and around a liquid jet to generate residual stresses without impinging the jet against the material, or by impinging the material at shallow angles, and without significantly damaging or deforming the surface of the target material.

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Номер записи: 13
12-09-2013 дата публикации

SHOT PEENING IN COMBINATION WITH AN HEAT TREATMENT AND A COMPONENT

Номер: US20130233451A1
Автор: Ahmad Fathi, Esser Winfried
Принадлежит:

A method to produce a metallic component is described. The method provides that an additional shot peening is performed on at least portion of component in order to obtain a fine grain structure during a following heat treatment in order to yield higher HCF because a finer grain structure is reached. 15-. (canceled)6. A method to produce a new metallic casted component , comprising:performing a first shot peening of the component before performing a heat treatment;performing a heat treatment after the first shot peening; andperforming a second shot peening is after the heat treatment,wherein the heat treatment is a bonding heat treatment and/or an aging heat treatment, andwherein the component is partially coated with a metallic coating and/or ceramic coating before the first shot peening.7. The method according to claim 6 ,wherein only a portion of the component is shot peened.8. The method according to claim 7 ,wherein only a portion of the component outside the coated area is shot peened.9. The method according to claim 6 ,wherein the component is a turbine blade and the shot peened area is the root of the blade.10. The method according to claim 6 ,wherein a fine grained structure is yielded.11. The method according to claim 10 ,wherein a fine grained structure only at the surface is yielded.12. The method according to claim 6 ,wherein the heat treatment is the first heat treatment after coating the metallic component. This application is the US National Stage of International Application No. PCT/EP2011/068219, filed Oct. 19, 2011 and claims the benefit thereof. The International Application claims the benefits of European application No. 10190345.8 EP filed Nov. 8, 2010. All of the applications are incorporated by reference herein in their entirety.The invention relates to shot peening of a component which is heat treated and a component.Turbine blades receive as an additional safety margin the application of a shot peening procedure on the machined blade root. ...

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Номер записи: 14
26-09-2013 дата публикации

METHOD FOR IMPROVING FATIGUE STRENGTH OF CAST IRON MATERIAL

Номер: US20130247633A1
Автор: Hirakawa Kazuhiro, Nozaki Yoshihiko, Taguchi Makoto
Принадлежит: UD TRUCKS CORPORATION

The purpose of the present invention is to provide a method for improving fatigue strength that is capable of improving the fatigue strength of cast iron, specifically spherical graphite cast iron, to the same level as that of carbon steel subjected 10 carburizing and quenching. To this end, this method contains a step for performing first, second and third shot peenings using shot of a prescribed diameter for each on spherical graphite cast iron on which a normalizing heat treatment has been performed at 800-950° C. and tensile strength made to be 850 MPa or more, the spherical graphite cast iron containing the following elements in the following mass percentages: C=2.0-4.0%, Si=1.5-4.5%, Mn=2.0% or less, P=0.08% or less, 8=0.03% or less, Mg=0.02-0.1%, and Cu=1.8-4.0%. 1performing a first shot peening treatment with shots having the hardness of 600 Hv or more and a particle size (φ) of 0.5 to 0.8 mm;performing a second shot peening treatment with shots having the hardness of 600 Hv or more and a particle size (φ) of 0.1 to 0.3 mm; andperforming a third shot peening treatment with shots having the hardness of 600 Hv or more and a particle size φ of 0.1 mm or less.. A method for improving a fatigue strength of a cast iron material, with respect to a spherical graphite cast iron which contains 2.0 to 4.0% C, 1.5 to 4.5% Si, 2.0% or less Mn, 0.08% or less P, 0.03% or less S, 0.02 to 0.1% Mg, and 1.8 to 4.0% Cu, by weight ratio, and is applied normalization heat treated so as to impart the tensile strength of 850 MPa or more, comprising the steps of: The present invention relates to a technology for improving a fatigue strength of a cast iron material, in particular, a spherical graphite cast iron.A conventional automobile transmission gear has been manufactured by carburizing and hardening a steel material after the steel material was gear cut. However, there was a problem of deformation of a member due to heat treatment strain.By contrast, a spherical graphite cast ...

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Номер записи: 15
26-09-2013 дата публикации

METHOD FOR IMPROVING FATIGUE STRENGTH OF CAST IRON MATERIAL

Номер: US20130247634A1
Автор: Hirakawa Kazuhiro, Nozaki Yoshihiko, Taguchi Makoto
Принадлежит: UD TRUCKS CORPORATION

The purpose of the present invention is to provide a method for improving fatigue strength that is capable of improving the fatigue strength of cast iron, specifically spherical graphite cast iron, to the same level as that of carbon steel subjected 10 carburizing and quenching. To this end, this method contains a step for performing first, second and third shot peenings using shot of a prescribed diameter for each on spherical graphite cast iron on which a tempering heat treatment has been performed at 150-300° C. and tensile strength made to be 800 MPa or more, the spherical graphite cast iron containing the following elements in the following mass percentages: C=2.0-4.0%, Si=1.5-4.5%, Mn=2.0% or less, P=0.08% or less, 8=0.03% or less, Mg=0.02-0.1%, and Cu=1.8-4.0%. 1performing a first shot peening treatment with shots having the hardness of 600 Hv or more and a particle size (φ) of 0.5 to 0.8 mm;performing a second shot peening treatment with shots having the hardness of 600 Hv or more and a particle size (φ) of 0.1 to 0.3 mm; andperforming a third shot peening treatment with shots having the hardness of 600 Hv or more and a particle size (φ) of 0.1 mm or less.. A method for improving a fatigue strength of a cast iron material, with respect to a spherical graphite cast iron which contains 2.0 to 4.0% C, 1.5 to 4.5% Si, 2.0% or less Mn, 0.08% or less P, 0.03% or less S, 0.02 to 0.1% Mg, and 1.8 to 4.0% Cu, by weight ratio, and is applied tempering heat treatment so as to be made the tensile strength to be 800 MPa or more, comprising the steps of: The present invention relates to a technology for improving a fatigue strength of a cast iron material, in particular, a spherical graphite cast iron.A conventional automobile transmission gear has been manufactured by carburizing and hardening a steel material after the steel material was gear cut. However, there was a problem of deformation of a member due to heat treatment strain.By contrast, a spherical graphite cast ...

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Номер записи: 16
31-10-2013 дата публикации

Spring having excellent corrosion fatigue strength

Номер: US20130285299A1
Автор: Masami Wakita, Takanori Kuno
Принадлежит: Chuo Hatsujo KK

A spring has a Rockwell hardness of HRC 53 to HRC 56 and a dislocation density ρ (cm −2 ) that satisfies the formula ρ≧1.4×10 11 ×H−6.7×10 12 in the Rockwell hardness range of HRC 53 to HRC 56, in which H is the Rockwell hardness. The spring also has a prior austenite grain size number of 10 or higher.

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Номер записи: 17
07-01-2016 дата публикации

Value stream process for forming vehicle rails from extruded aluminum tubes

Номер: US20160001345A1
Автор: Andrey M. Ilinich, Christopher John May, David John Hill, Peter A. Friedman, S. George Luckey, Jr., Stephen Kernosky
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

A value stream process or method for forming vehicle rails from extruded aluminum tubes includes the steps of extruding an aluminum tube and hydroforming the extruded aluminum tube into a vehicle rail. More specifically, the method includes extruding the aluminum tube, bending the aluminum tube, preforming the aluminum tube, hydroforming the aluminum tube into a vehicle rail, trimming the vehicle rail to length and then artificially aging the rail followed by batch chemical pretreatment. In an alternative embodiment the artificial aging and batch chemical pretreatment processes are performed in reverse order. In either of the embodiments, localized induction annealing to recover formability may be performed between bending and preforming, between preforming and hydroforming or both.

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Номер записи: 18
08-01-2015 дата публикации

Method for manufacturing ferrous material

Номер: US20150007912A1
Автор: Hidetoshi Fujii, Yoshiaki Morisada
Принадлежит: Osaka University NUC

A base material of a ferrous material is heated to an A C1 point, which is a temperature to cause mustenite appearance, or higher, and austenite appears in the base material 1 a and 1 b (S 101 ). An amount of a strain assuming that an M f point, which is a temperature where the base material becomes martensite completely, is decreased to be less than room temperature is introduced into the base material (S 102 ). The all ferrous material becoming martensite on the occasion of cooling the ferrous material to room temperature is prevented. The base material is cooled to room temperature at a cooling rate where a line extrapolated a cooling curve of the base material intersects with a region where martensite is produced on the CCT diagram (S 103 ). Austenite remains in the manufactured ferrous material at room temperature.

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Номер записи: 19
27-01-2022 дата публикации

Steel material

Номер: US20220025493A1
Автор: Takafumi Amata, Yutaka Neishi
Принадлежит: Nippon Steel Corp

Provided is a steel material which can achieve excellent fatigue strength even when a carburized steel component is produced by welding before carburizing treatment. The steel material has a chemical composition containing: in mass %, C: 0.09 to 0.16%, Si: 0.01 to 0.50%, Mn: 0.40 to 0.60%, P: 0.030% or less, S: 0.025% or less, Cr: 0.90 to 2.00%, Mo: 0.10 to 0.40%, Al: 0.005 to 0.030%, Ti: 0.010 to less than 0.050%, Nb: 0.010 to 0.030%, N: 0.0080% or less, O: 0.0030% or less, B: 0.0003 to 0.0030%, Ca: 0.0005 to 0.0050%, and the balance: Fe and impurities, and satisfying Formula (1) to Formula (3) according to the description. In a cross section parallel to an axial direction of the steel material, an amount of Mn sulfide is 70.0 pieces/mm2 or less, and an amount of oxide is 25.0 pieces/mm2 or less.

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Номер записи: 20
10-01-2019 дата публикации

METHOD FOR PRODUCING A COMPONENT AND COMPONENT PRODUCED ACCORDING TO SAID METHOD

Номер: US20190009627A1
Автор: BRONSWICK Philipp, KUHLMANN Sven
Принадлежит:

In order to reduce both the weight and the production costs in the case of vehicle chassis components consisting of at least two parts, a first part is made as a sheet component by press hardening and the second part is produced by a conventional production method, which does not include press hardening. The part produced by press hardening forms a structural component, whereas the other component serves to stiffen the part produced by press hardening. 19-. (canceled)10152367. A method of producing a component ( , ) for a motor vehicle that comprises at least first and second individual parts ( and , and ) which are connected to one another , the method comprising:{'b': 2', '6, 'producing the first individual part (, ), which is a sheet metal part, by press hardening in a non-machining deformation process, and'}{'b': 3', '7, 'producing the second individual part (, ) by a conventional production process without press hardening.'}1137. The method according to claim 10 , further comprising producing the second individual part ( claim 10 , ) claim 10 , which is a sheet metal part claim 10 , by a sheet cold-forming process.122367. The method according to claim 10 , further comprising welding the first and the second individual parts ( and claim 10 , or and ) to one another.1326. The method according to claim 12 , further comprising making at least one of a strength and a hardness of the first individual part ( claim 12 , ) lower in an area of a weld seam than in press-hardened areas.1437. The method according to claim 10 , further comprising producing the second individual part ( claim 10 , ) as a carbon-fiber-reinforced plastic part.152367. The method according to claim 10 , further comprising adhesively bonding the first and the second individual parts ( and claim 10 , and ) to one another.16261537. The method according to claim 10 , further comprising producing the first individual part ( claim 10 , ) claim 10 , which when the component ( claim 10 , ) is in service ...

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Номер записи: 21
11-01-2018 дата публикации

HIGH YIELD STRENGTH STEEL

Номер: US20180010204A1
Автор: ANDERSON Scott T., BALL Andrew T., BRANAGAN Daniel James, Cheng Sheng, Clark Kurtis R., FRERICHS Andrew E., GIDDENS Taylor L., JUSTICE Grant G., Larish Scott T., MEACHAM Brian E., SERGUEEVA Alla V., TEW Logan J., WALLESER Jason K.
Принадлежит:

This disclosure is related to high yield strength steel where yield strength can be increased without significantly affecting ultimate tensile strength (UTS) and in some cases, higher yield strength can be obtained without significant decrease in ultimate tensile strength and total elongation. 1. A method to increase yield strength in a metallic alloy comprising:{'sup': −4', '3, 'a. supplying a metal alloy comprising at least 70 atomic % iron and at least four or more elements selected from Si, Mn, Cr, Ni, Cu or C, melting said alloy, cooling at a rate of 10K/sec to 10K/sec and solidifying to a thickness of >5.0 mm to 500 mm;'}{'sub': 1', '1', '1, 'b. processing said alloy into a first sheet form with thickness from 0.5 to 5.0 mm with the first sheet having a total elongation of X(%), an ultimate tensile strength of Y(MPa), and a yield strength of Z(MPa);'}c. permanently deforming said alloy in the temperature range of 150° C. to 400° C. into a second sheet form exhibiting one of the following tensile property combinations A or B:{'sub': 2', '1, 'claim-text': [{'sub': 2', '1, '(2) ultimate tensile strength Y=Y±100 MPa; and'}, {'sub': 2', '1, '(3) yield strength Z≧Z+100 MPa.'}], 'A. (1) total elongation X=X±7.5%;'}{'sub': 3', '1, 'claim-text': {'sub': 3', '1, '(2) yield strength Z≧Z+200 MPa'}, 'B. (1) ultimate tensile strength Y=Y±100 MPa; and'}2. The method of claim 1 , wherein said alloy contains at least 70 atomic % iron and five or more elements selected from Si claim 1 , Mn claim 1 , Cr claim 1 , Ni claim 1 , Cu or C.31. The method of wherein said alloy contains at least 70 atomic % iron and Si claim 1 , Mn claim 1 , Cr claim 1 , Ni claim 1 , Cu and C.4. The method of wherein said alloy formed in step (b) exhibits Xvalues of 10.0 to 70.0% claim 1 , Yvalues of 900 MPa to 2050 MPa and Zvalues of 200 MPa to 750 MPa.5. The method of wherein said tensile property combination A is as follows: X=2.5% to 77.5% claim 1 , Y=800 MPa to 2150 MPa and Z≧300 MPa.6. The method ...

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Номер записи: 22
11-01-2018 дата публикации

Residual stress evaluation method

Номер: US20180010205A1
Автор: Mayumi Ochi, Naoki Ogawa, Nobuyuki Hori
Принадлежит: Mitsubishi Heavy Industries Ltd

A method of evaluating a residual stress including a condition setting step of setting a processing condition of water jet peening for a processing target; an analysis step of analyzing a jet flow when a fluid is injected from a nozzle model to a processing target model in accordance with the processing condition, and obtaining a void fraction which is a volume fraction of babbles contained in a unit volume of the fluid, and a collapse fraction, which is a volume fraction of the bubbles which collapse in a unit time in the unit volume of the fluid, at each position on a surface of the processing target model; an impact pressure correlation value calculating step of obtaining an impact pressure correlation value, which is a product of the void fraction and the collapse fraction at each position; an experimental value acquisition step of obtaining an impact pressure experimental value.

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Номер записи: 23
15-01-2015 дата публикации

Processes and Apparatus for Surface Modification

Номер: US20150013412A1
Автор: CHEPPE Patrick, Desfontaine Vincent Olivier Jacquey, Haverty Donncha, KENNEDY Brendan
Принадлежит:

The present application relates to processes for changing the composition of surfaces and the application of such processes. The process involves the introduction of a surface augmentation composition within an aerosol formed from a liquid precursor with bombarding particles in an ultrasonic shot peening apparatus. 1. A method of augmenting the composition of at least part of the surface of an article or articles , the method comprising the steps of:a. providing an apparatus that forms an enclosure proximal to at least that portion of the surface(s) to be augmented wherein the apparatus comprises at least one vibrating component,b. providing bombarding particles within the confines of the enclosure,c. providing a surface augmentation material within a liquid precursor, and atomizing the liquid precursor and providing the atomised liquid precursor in the enclosure,d. causing the vibrating component to vibrate at an ultrasonic frequencies such that energy is imparted to the bombarding particles causing the bombarding particles to impact the surface(s) concomitant with the presence of the surface augmentation material.2. A method according to claim 1 , wherein the vibrating component(s) claim 1 , operates with at least one of the following characteristics:i. a vibrating frequency comprised between 15 and 100 kHz,ii. a vibration amplitude between 0 and 300 μm peak to valley,iii. a distance between the vibrating surface and the article is between 1 and 300 mm.3. A method according to claim 1 , wherein at least one of the following applies:a) the bombarding particles have a diameter between 0.1 and 10 mm,{'sup': 3', '3, 'b) the bombarding particles material density between 0.1 g/cmand 25 g/cm'}c) a volume ratio between the bombarding particles and chamber is less than 50%.4. The method of claim 1 , wherein augmenting the surface of the article(s) comprises one or more of the following:incorporating the surface augmentation material into or onto the surfacethe formation of ...

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Номер записи: 24
15-01-2015 дата публикации

Wjp execution method for reactor vessel lid and jigs

Номер: US20150013414A1
Автор: Hideshi Sakashita
Принадлежит: Mitsubishi Heavy Industries Ltd

In a WJP execution method for a reactor vessel lid, WJP is executed on the inner surface of the reactor vessel lid in a state in which an underwater environment is formed on the inner surface of the reactor vessel lid and an aerial environment is formed on the outer surface thereof. In addition, the reactor vessel lid with a waterproof jig attached thereto is arranged in water, the waterproof jig having a cylindrical shape extending to the side of the outer surface of the reactor vessel lid and constituting a vessel with the reactor vessel lid as the bottom portion thereof. Moreover, the reactor vessel lid is arranged on a base installed in the water.

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Номер записи: 25
19-01-2017 дата публикации

STEEL PART AND METHOD OF MANUFACTURING THE SAME

Номер: US20170016083A1
Автор: Matsumoto Kenji
Принадлежит: HONDA MOTOR CO., LTD.

A surface of a steel material cut to a desired shape and carbonitrided is heated by excitation and thereafter repeatedly heated/cooled a predetermined number of times, such that an ultrafine crystal layer is formed immediately under the surface of the steel material and at least a predetermined number of cracks are formed under the formed ultrafine crystal layer, thereby enabling to increase toughness of the surface or immediately thereunder and enhance tenacity and inhibiting growth of cracks. 1. A steel part , comprising:a steel material cut to a desired shape and carbonitrided, whose surface is then repeatedly heated by excitation and cooled a predetermined number of times, such that an ultrafine crystal layer is formed immediately under the surface of the steel material and at least a predetermined number of cracks are formed under the formed ultrafine crystal layer.2. A method for manufacturing a steel part from a steel material , comprising:a cutting step to cut the steel material to machine the material to a desired shape;a carbonitriding step to carbonitride the cut and machined steel material; anda crack forming step to excite and heat a surface of the carbonitrided steel material and thereafter cools, and repeat the heating and cooling a predetermined number of times, thereby forming an ultrafine crystal layer immediately under the surface of the steel material, and forming at least a predetermined number of cracks under the formed ultrafine crystal layer.3. The method according to claim 2 , wherein the crack forming step comprises:a step to mechanically rub the surface of the steel material to heat and then cool the heated surface of the steel material.4. The method according to claim 2 , wherein the crack forming step comprises:a step to bring particles or fluid into collision with the surface of the steel material to heat and then cool the heated surface of the steel material. This invention relates to a steel part and a method of manufacturing the same ...

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Номер записи: 26
18-01-2018 дата публикации

Methods and processes of forming gears

Номер: US20180016650A1
Автор: Bruce D. Hansen
Принадлежит: Sikorsky Aircraft Corp

A method of manufacturing a part is provided. The method includes heating a gear in the presence of carbon to carburize a material of the gear to create a carburized gear, the gear having a plurality of gear teeth and which comprises a selected material. Next, the carburized gear is high pressure gas quenched to drive the carbon into the material of the gear to create a quenched gear. Next, the quenched gear is at least one of cavitation peened and laser peened to create a peened gear. Finally, superfmishing is performed on surfaces of the peened gear.

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Номер записи: 27
26-01-2017 дата публикации

Track shoe having increased service life useful in a track drive system

Номер: US20170021878A9
Автор: Alma Olsen, Claude Pierre Talbot
Принадлежит: Individual

A track shoe for a track drive system, which comprises a shoe base, one or more drive lugs attached to the shoe base, and a wear plate attached to the shoe base. The shoe base and drive lugs may be formed from a prehardened engineering steel, such as MECASTEEL 145. The wear plate may be formed from MECASTEEL 145 or an advanced abrasion-resistant steel, such as Creusabro 8000. The drive lugs may be replaceably attached to the shoe base, preferably by welding. The wear plate may be replaceably attached to the shoe base, preferably by fasteners such as bolts.

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Номер записи: 28
26-01-2017 дата публикации

SEAMLESS STEEL TUBE FOR FUEL INJECTION

Номер: US20170022581A1
Автор: GUNJI Makio, Kawabata Yoshikazu, Nishino Manabu
Принадлежит:

A seamless steel tube has a particular composition and a structure with an average prior γ grain size of 150 μm or less in an axial cross-section after cold drawing and heat treatment. The structure retards the growth of a fatigue crack. The steel tube has a tensile strength TS of 500 MPa or more and good internal pressure fatigue resistance and is suitable for use as a fuel injection tube under high injection pressures. The composition of the steel tube may further contain at least one of Cu, Ni, Cr, Mo, and B; at least one of Ti, Nb, and V; and/or Ca. 14-. (canceled)6. The seamless steel tube according to claim 5 , wherein the composition further comprises claim 5 , by mass claim 5 , at least one of 0.70% or less Cu claim 5 , 1.00% or less Ni claim 5 , 1.20% or less Cr claim 5 , 0.50% or less Mo claim 5 , and 0.0060% or less B.7. The seamless steel tube according to claim 5 , wherein the composition further comprises claim 5 , by mass claim 5 , at least one of 0.20% or less Ti claim 5 , 0.050% or less Nb claim 5 , and 0.20% or less V.8. The seamless steel tube according to claim 6 , wherein the composition further comprises claim 6 , by mass claim 6 , at least one of 0.20% or less Ti claim 6 , 0.050% or less Nb claim 6 , and 0.20% or less V.9. The seamless steel tube according to claim 5 , wherein the composition further comprises claim 5 , by mass claim 5 , 0.0040% or less Ca.10. The seamless steel tube according to claim 6 , wherein the composition further comprises claim 6 , by mass claim 6 , 0.0040% or less Ca.11. The seamless steel tube according to claim 7 , wherein the composition further comprises claim 7 , by mass claim 7 , 0.0040% or less Ca.12. The seamless steel tube according to claim 8 , wherein the composition further comprises claim 8 , by mass claim 8 , 0.0040% or less Ca. This disclosure relates to seamless steel tubes suitable as fuel injection tubes injecting fuel into combustion chambers such as those of diesel engines. In particular, the ...

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Номер записи: 29
25-01-2018 дата публикации

SHOT PEENING TREATMENT FOR CAVITATION EROSION RESISTANCE

Номер: US20180023153A1
Автор: Yuan Wei, Zheng Lili
Принадлежит:

In some examples, a material may be subject to shot peening of a relatively long duration to improve cavitation erosion resistance of the material. For example, the material surface may be shot peened to cause grain reduction and an increase in hardness to a depth of 60 μm or more, while the surface remains relatively smooth. As one example, the method may include treating a surface of austenitic stainless steel by impacting the surface with shot media for a treatment duration of 15 to 40 minutes at a shot peening intensity corresponding to an Almen strip type A intensity of 5A to 10A. 1. A method of treating a surface of austenitic stainless steel to increase resistance to cavitation erosion , the method comprising impacting the surface with shot media for a shot peening duration of 15 to 40 minutes at a shot peening intensity corresponding to an Almen strip type A intensity of 5A to 10A.2. The method as recited in claim 1 , wherein the shot media is cast steel shot having a size range between 0.18 mm to 1.68 mm.3. The method as recited in claim 1 , wherein the shot peening duration is between 20 and 30 minutes.4. The method as recited in claim 3 , wherein the shot peening intensity is in a range from 5A to 7A claim 3 , and the shot media is steel shot having a size range from 0.58 mm to 0.99 mm.5. The method as recited in claim 1 , further comprising polishing the surface to remove 10 to 30 μm of material.6. The method as recited in claim 1 , wherein the austenitic stainless steel includes 18-20% Cr and 2.0-3.0% Mo.7. The method as recited in claim 1 , wherein the treatment provides in an increase in hardness to a depth of at least 60 μm from the surface and a surface roughness of less than 20 μm.8. A method comprising shot peening a surface of a material for a shot peening duration of 15 to 40 minutes at a shot peening intensity corresponding to an Almen strip type A intensity of 5A to 10A claim 1 , wherein:the material has an austenitic crystalline structure, ...

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Номер записи: 30
23-01-2020 дата публикации

METHOD FOR PRODUCTION OF PERFORMANCE ENHANCED METALLIC MATERIALS

Номер: US20200023425A1
Автор: Yousefiani Ali
Принадлежит: The Boeing Company

A metallic material manufactured by a method including steps of (1) subjecting a semifinished metallic billet having at least one of a nanocrystalline microstructure and an ultrafine-grained microstructure to a rotary incremental forming process to form an intermediate wrought metallic billet and (2) subjecting the intermediate wrought metallic billet to a high rate forming process, wherein the high rate forming process includes a high rate forming process average equivalent strain rate, the high rate forming process average equivalent strain rate being at least about 0.1 s−1. 1. A metallic material manufactured by a method comprising:subjecting a semifinished metallic billet comprising at least one of a nanocrystalline microstructure and an ultrafine-grained microstructure to a rotary incremental forming process to form an intermediate wrought metallic billet; andsubjecting said intermediate wrought metallic billet to a high rate forming process, wherein said high rate forming process comprises a high rate forming process average equivalent strain rate, said high rate forming process average equivalent strain rate being at least about 0.1 s−1.2. The metallic material of comprising a refractory metal.3. The metallic material of comprising at least one of aluminum claim 1 , aluminum alloy claim 1 , titanium claim 1 , titanium alloy claim 1 , iron-based alloy claim 1 , nickel claim 1 , nickel alloy claim 1 , cobalt claim 1 , cobalt alloy claim 1 , magnesium claim 1 , magnesium alloy claim 1 , copper claim 1 , copper alloy claim 1 , a precious metal claim 1 , a precious metal alloy claim 1 , zinc claim 1 , zinc alloy claim 1 , zirconium claim 1 , zirconium alloy claim 1 , hafnium claim 1 , hafnium alloy claim 1 , an intermetallic claim 1 , and a metal matrix material.4. The metallic material of comprising an aluminum alloy.5. The metallic material of comprising 6061 aluminum alloy.6. The metallic material of in a form of a rod claim 1 , a sheet claim 1 , a bar claim 1 ...

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Номер записи: 31
24-01-2019 дата публикации

Dual hardness steel article

Номер: US20190024204A1
Автор: Glenn J. Swiatek, Njall Stefansson, Ronald E. Bailey
Принадлежит: ATI Properties LLC

A dual hardness steel article comprises a first air hardenable steel alloy having a first hardness metallurgically bonded to a second air hardenable steel alloy having a second hardness. A method of manufacturing a dual hard steel article comprises providing a first air hardenable steel alloy part comprising a first mating surface and having a first part hardness, and providing a second air hardenable steel alloy part comprising a second mating surface and having a second part hardness. The first air hardenable steel alloy part is metallurgically secured to the second air hardenable steel alloy part to form a metallurgically secured assembly, and the metallurgically secured assembly is hot rolled to provide a metallurgical bond between the first mating surface and the second mating surface.

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Номер записи: 32
04-02-2016 дата публикации

Heat Treat Production Fixture

Номер: US20160032415A1
Автор: Webster Oliver
Принадлежит:

A method for manufacturing a metal structure () for use in a downhole assembly comprises plastically deforming at least a portion of the metal structure (); and heating at least the deformed portion of the metal structure to a temperature below its critical and/or transformation temperature. An assembly for performing the method comprises a production fixture () configured to receive the metal structure (), wherein the production fixture is adapted to undergo heating to a temperature below and/or up to the critical and/or transformation temperature of the metal structure. By heating at least the deformed portion of the metal structure to a temperature below its critical and/or transformation temperature, the metal structure may undergo stress relief, which may help prevent undesirable movement of deformed portion, e.g. collet fingers of a catching apparatus, against the direction of deformation after impact(s) and/or shock(s) from moving objects, in use. 1. A method for manufacturing a metal structure for use in a downhole assembly , the method comprising:plastically deforming at least a portion of the metal structure; andheating at least the deformed portion of the metal structure to a temperature below its critical and/or transformation temperature.2. A method according to claim 1 , comprising providing or arranging the metal structure on a production fixture.3. A method according to claim 2 , wherein the production fixture comprises a mandrel.4. A method according to claim 2 , wherein the production fixture defines a substantially cylindrical outer surface claim 2 , and/or a tapered profile outer surface.5. A method according to claim 2 , comprising plastically deforming at least a portion of the metal structure by forcing the metal structure onto the production fixture.6. A method according to claim 2 , comprising securing and/or fixing the metal structure to the production fixture.7. A method according to claim 6 , comprising securing and/or fixing the metal ...

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Номер записи: 33
31-01-2019 дата публикации

MACHINING SYSTEM, APPARATUS AND METHOD

Номер: US20190030660A1
Автор: Wern Michael J.
Принадлежит:

A method and apparatus for processing a metallic workpiece with defined edges (e.g., a gear) comprises media blasting of the workpiece by directing a first media against exposed surfaces on the workpiece to increase the root strength of the gear, the blasting causing the defined edges to be radiused or mushroomed, ceasing the media blasting, loading the workpiece into a finishing apparatus, and subjecting the workpiece to a finishing process with a second media, the exposed surfaces on the workpiece being subjected to the finishing process to reduce the radiused edges on the workpiece created from the media blasting. The process of moving the workpiece to the spindle-finishing apparatus from the media blasting may be performed automatically by a machine. Once the workpiece has been subjected to the finishing process with the second media, it may be removed from the spindle-finishing machine, washed, and rinsed with rust inhibitor whereby wear properties of the workpiece are enhanced. 120-. (canceled)21. An apparatus for processing a workpiece having one or more defined edges , the one or more defined edges having a cross-sectional shape that includes at least one tip , the apparatus comprising:a media blasting apparatus configured to subject the workpiece to a media blasting process with a first media and forming the tip of the one or more defined edges into a radiused tip having a first width; anda finishing apparatus configured to subject the workpiece to a finishing process after the media blasting process, the finishing process comprising vibrating a second media to wear down the radiused tip such that the width of the radiused tip becomes a second width, wherein the second width is less than the first width.22. The apparatus of claim 21 , wherein the workpiece comprises one or more teeth claim 21 , and wherein the one or more defined edges are located on a tip of the one or more teeth.23. The apparatus of claim 22 , wherein the workpiece is a gear.24. The ...

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Номер записи: 34
31-01-2019 дата публикации

HOLLOW SPRING MEMBER

Номер: US20190030979A1
Автор: TAKEDA Daisuke, UMEZAWA Masahiro
Принадлежит: NHK SPRING CO., LTD.

On an end portion of a hollow rod, which is a material of a hollow coil spring, a terminal sealed portion is formed. The terminal sealed portion has a rotationally symmetric shape in which an axis passing through the center of the rod is a symmetric axis. The terminal sealed portion includes an end wall portion, and a distal-end-center closure portion formed on the axis. In the distal-end-center closure portion, a distal end opening portion of the spin-formed rod is joined together and formed as an integral part. On the axis at the inner surface of the end wall portion, a recess having a rotationally symmetric shape in which the axis is the symmetric axis is formed. A thickness of the recess of the end wall portion is reduced toward the axis. 1. A hollow spring member which is constituted of a hollow rod , and includes a terminal sealed portion at an end portion of the rod ,the terminal sealed portion having a rotationally symmetric shape in which an axis passing through a center of the rod is a symmetric axis, and including:an end wall portion including an end face;a distal-end-center closure portion existing on the axis at a center of the end wall portion; anda recess formed on an inner surface of the end wall portion, and having a rotationally symmetric shape in which the axis is the symmetric axis.2. The hollow spring member of claim 1 , wherein a thickness of the recess of the end wall portion is reduced toward the axis claim 1 , and a center of the recess is located on the axis.3. The hollow spring member of claim 1 , wherein the hollow spring member is constituted of the hollow rod formed into a helical shape claim 1 , and has a shape of a coil spring.4. The hollow spring member of claim 1 , wherein the hollow spring member is constituted of the hollow rod including a torsion portion and an arm portion claim 1 , and has a shape of a vehicle stabilizer.5. The hollow spring member of claim 1 , wherein the hollow spring member is constituted of the hollow rod ...

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Номер записи: 35
08-02-2018 дата публикации

Hammering device for influencing workpieces and associated method

Номер: US20180036842A1
Автор: Alfred Ostertag, Stefan Zenk
Принадлежит: ECOROLL AG WERKZEUGTECHNIK

The invention relates to a hammering device ( 10 ) for influencing the subsurfaces of workpieces ( 14 ) comprising a beating tool ( 16 ) for acting on the workpiece ( 14 ), a beating mechanism ( 18 ) which has a beater ( 20 ) for producing a beating pulse on the beating tool ( 16 ), and a drive ( 32 ) for driving the beating mechanism ( 18 ), wherein the beating mechanism ( 18 ) has at least a second beater ( 20 ) for producing a beating pulse on the beating tool ( 16 ). According to the invention, it is intended for the beating mechanism ( 18 ) to comprise a drive shaft ( 30 ) that extends along a drive axis (A) and a wobble ring ( 28 ) for transforming a rotational movement of the drive shaft ( 30 ) into a translational movement, and the first beater ( 20.1 ) and the second beater ( 20.2 ) to be driven by the wobble ring ( 28 ).

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Номер записи: 36
07-02-2019 дата публикации

MANUFACTURING ULTRA-HIGH STRENGTH LOAD BEARING PARTS USING HIGH STRENGTH/LOW INITIAL YIELD STEELS THROUGH TUBULAR HYDROFORMING PROCESS

Номер: US20190039110A1
Автор: Jia Yueqian, PU Chao, Wang Yu-Wei, Zhu Feng
Принадлежит:

Rather than using a conventional stamping forming process with steels having high ultimate tensile strength and relatively low initial yield, tubular hydroforming techniques are introduced to synergize with BIW part forming, or forming of other load bearing parts. Such steels can have ultimate tensile strengths of greater than 1000 MPa and initial yields of less than 360 MPa In some embodiments, the steels have elongation of at least 40%. Such steels can include retained austenite. 1. A process for forming steels with high ultimate tensile strength and low initial yields comprising the steps of:a. Forming an initial tube blank by selecting a raw tube diameter sufficient to permit stretching of the steel in a later hydroforming step to reach a pre-determined yield strength while keeping induced material thinning within pre-determined failure limits and pre-determined design tolerance and forming an initial tube blank conforming to said diameter;b. Pre-bending said initial tube blank to generate a smooth curvature in a bent tube;c. Hydroforming the bent tube in a mold by filling the bent tube with a pressurized liquid until walls of the bent tube contact the mold to form a part;d. Trimming the formed part.2. The process of wherein the steel contains retained austenite.3. The process of wherein before hydroforming the steel has an ultimate tensile strength of greater than 1000 MPa and an initial yield strength of less than 360 MPa.4. The process of wherein before hydroforming the steel has an ultimate tensile strength of greater than 1150 MPa.5. The process of wherein the tube blank is subject to at least one of preforming or intermediate hydroforming after pre-bending and before hydroforming. This application claims priority to U.S. Provisional Application Ser. No. 62/539,911, entitled “Manufacturing Ultra-High Strength BIW Parts Using Nanosteel® NXG 1200 Through Tubular Hydroforming Process,” filed on Aug. 1, 2017, the disclosure of which is incorporated by reference ...

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Номер записи: 37
24-02-2022 дата публикации

STEEL, PRODUCT MADE OF SAID STEEL, AND MANUFACTURING METHOD THEREOF

Номер: US20220056545A1
Автор: BORDAS Angeline, PERRIN GUERIN Valerie, PINTON Gilles, VALLADE Christian
Принадлежит:

Disclosed is a steel composition including specified ranges of Ni; Mo; Co; Mo+Co+Si+Mn+Cu+W+V+Nb+Zr+Ta+Cr+C; Co+Mo; Ni+Co+Mo; and traces of Al; Ti; N; Si; Mn; C; S; P; B; H; O; Cr; Cu; W; Zr; Ca; Mg; Nb; V; and Ta in specified ranges; the remainder being iron and impurities. The inclusion population, as observed by image analysis over a polished surface measuring 650 mmif hot-formed or hot-rolled; and measuring 800 mmif cold-rolled, does not contain non-metallic inclusions of diameter >10 μm, and, in the case of a hot-rolled sheet, does not contain more than four non-metallic inclusions of diameter 5-10 μm over 100 mm, the observation being performed by image analysis over a polished surface measuring 650 mm. 1. Steel , characterised in that its composition , in percentages by weight is as follows:10.0%≤Ni≤24.5%, preferably 12.0%≤Ni≤24.5%;1.0%≤Mo≤12.0%, preferably 2.5%≤Mo≤9.0%;1.0%≤Co≤25.0%;20.0%≤Mo+Co+Si+Mn+Cu+W+V+Nb+Zr+Ta+Cr+C≤29.0%, preferably 22.0%≤Mo+Co+Si+Mn+Cu+W+V+Nb+Zr+Ta+Cr+C≤29.0%, more preferably 22.5%≤Mo+Co+Si+Mn+Cu+W+V+Nb+Zr+Ta+Cr+C≤29.0%;Co+Mo≥20.0%; preferably Co+Mo≥21.0%; more preferably Co+Mo≥22.0%;Ni+Co+Mo≥29%; preferably Ni+Co+Mo≥41.0%;traces ≤Al≤4.0%, preferably 0.01%≤Al≤1.0%;traces ≤Ti≤0.1%;traces ≤N≤0.0050%;traces ≤Si≤2.0%; preferably 0.04%≤Si≤2.0%;traces ≤Mn≤4.0%;traces ≤C≤0.03%;traces ≤S≤0.0020%, preferably traces ≤S≤0.0010%;traces ≤P≤0.005%;traces ≤B≤0.01%;traces ≤H≤0.0005%;traces ≤O≤0.0025%;traces ≤Cr≤5.0%;traces ≤Cu≤2.0%;traces ≤W≤4.0%;traces ≤Zr≤4.0%;traces ≤Ca≤0.1%;traces ≤Mg≤0.1%;traces ≤Nb≤4.0%;traces ≤V≤4.0%;traces ≤Ta≤4.0%;with the remainder being iron and impurities resulting from the smelting and manufacturing process;{'sup': 2', '2', '2', '2, 'and in that the inclusion population, as observed by means of image analysis over a polished surface measuring 650 mmif the steel is in the form of a component part/work piece that is hot-formed or a hot-rolled sheet; and measuring 800 mmif the steel is in the form of a cold-rolled sheet, ...

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Номер записи: 38
24-02-2022 дата публикации

ULTRA-LOW TEMPERATURE FORMING METHOD FOR ULTRA-THIN CURVED PART OF HIGH-STRENGTH ALUMINUM ALLOY

Номер: US20220056561A1
Автор: Fan Xiaobo, YUAN Shijian
Принадлежит:

The present invention discloses a method for ultra-low temperature forming an ultra-thin curved part of a high-strength aluminum alloy. The method includes the following steps: step 1: selecting a cladding with a suitable thickness according to a wrinkle limit of a sheet; step 2: stacking the sheet and the cladding, then putting into a die, and closing a blank holder; step 3: filling a cavity of a female die with an ultra-low temperature medium to cool the sheet to below −160° C.; step 4: applying a set blank holding force by the blank holder, and enabling a male die to go down to form a thin-walled curved part; and step 5: opening the die and taking out the formed thin-walled curved part. The present invention utilizes the favorable formability of the high-strength aluminum alloy at the ultra-low temperature and the instability resistance of the thick sheet. 1. A method for ultra-low temperature forming an ultra-thin curved part of a high-strength aluminum alloy , comprising the following steps:(1) selecting a cladding with a suitable thickness according to a wrinkle limit of a sheet;(2) stacking the sheet and the cladding, then putting into a die, and closing a blank holder;(3) filling a cavity of a female die with an ultra-low temperature medium to cool the sheet to below −160° C.;(4) applying a set blank holding force by the blank holder, and enabling a male die to go down to form a thin-walled curved part; and(5) opening the die and taking out the formed thin-walled curved part.2. The method for ultra-low temperature forming an ultra-thin curved part of a high-strength aluminum alloy according to claim 1 , wherein the cladding is made of pure aluminum claim 1 , Al—Mg alloy claim 1 , Al—Mg—Si alloy claim 1 , low-carbon steel or stainless steel; a sum of thickness of the cladding and the sheet is greater than a critical wrinkling thickness.3. The method for ultra-low temperature forming an ultra-thin curved part of a high-strength aluminum alloy according to ...

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Номер записи: 39
06-02-2020 дата публикации

Methods and processes of forming gears

Номер: US20200040414A1
Автор: Bruce D. Hansen
Принадлежит: Sikorsky Aircraft Corp

A method of manufacturing a part is provided. The method includes heating a gear in the presence of carbon to carburize a material of the gear to create a carburized gear, the gear having a plurality of gear teeth and which comprises a selected material. Next, the carburized gear is high pressure gas quenched to drive the carbon into the material of the gear to create a quenched gear. Next, the quenched gear is at least one of cavitation peened and laser peened to create a peened gear. Finally, superfinishing is performed on surfaces of the peened gear.

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Номер записи: 40
06-02-2020 дата публикации

ASSEMBLY COMPONENT

Номер: US20200040416A1
Автор: HUMMELSHØJ Thomas Strabo
Принадлежит: EXPANITE TECHNOLOGY A/S

The present invention relates to an assembly component of an alloy based on iron, nickel and/or cobalt containing at least 10% (w/w) chromium, the assembly component having an annular shape with an inner surface and an outer surface and a thickness between the inner surface and the outer surface in the range of 0.1 mm to 5 mm, the alloy having a content of nitrogen in solid solution providing a microhardness in the range of 250 HVto 370 HVat a depth from the surface in the range of 0 μm to 100 μm. The invention also relates to an assembly with the assembly component. 1. An assembly component of an alloy based on iron , nickel and/or cobalt containing at least 10% (w/w) chromium , the assembly component having an annular shape with an inner surface and an outer surface and a thickness between the inner surface and the outer surface in the range of 0.1 mm to 5 mm , the alloy having a content of nitrogen in solid solution providing a microhardness in the range of 250 HVto 370 HVat a depth from the surface in the range of 0 μm to 100 μm.2. The assembly component according to claim 1 , wherein the microhardness is in the range of 280 HVto 320 HVat a depth from the surface in the range of 0 μm to 100 μm.3. The assembly component according to claim 1 , wherein the assembly component has an average microhardness in the range of 280 HVto 320 HVover the thickness of the assembly component as calculated from at least 5 microhardness measurements claim 1 , which at least 5 microhardness measurements deviate with up to 15% from the average hardness.4. The assembly component according to claim 1 , wherein the nitrogen content is in the range of 0.1% (w/w) to 0.8% (w/w) at a depth from the surface in the range of 0 μm to 100 μm.5. The assembly component according to claim 3 , wherein the nitrogen content is in the range of 0.1% (w/w) to 0.8% (w/w) over the thickness of the assembly component.6. The assembly component according to claim 5 , wherein the nitrogen content deviates ...

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Номер записи: 41
13-02-2020 дата публикации

ULTRASONIC ROLLER BURNISHING SYSTEM AND METHOD, AND METHOD FOR MACHINING COMPONENT

Номер: US20200048725A1
Автор: BAO Yingbin, GAO Qing, WICKERT Thomas Edward, WU Yingna
Принадлежит:

An ultrasonic roller burnishing system comprises a roller and a controller. The roller is configured to be pressed against a surface of a workpiece to a pressing depth, roll on the surface at a feed rate, and vibrate at an ultrasonic frequency under a back pressure. The roller is pressed and rolled by a motion unit which is driven by a drive motor. The vibrating of the roller is driven by an ultrasonic vibration unit with an input current inputted thereinto. The controller is configured to adjust at least one of the pressing depth, the back pressure, the input current and the feed rate based on an expected residual compressive stress and a real time output power of the drive motor, to generate a residual compressive stress in the workpiece which is in an expected range predetermined based on the expected residual compressive stress. 1. An ultrasonic roller burnishing system , comprising:a roller, configured to be pressed against a surface of a workpiece to a pressing depth, roll on the surface at a feed rate, and vibrate at an ultrasonic frequency under a back pressure, wherein the roller is pressed and rolled by a motion unit which is driven by a drive motor, and the vibrating of the roller is driven by an ultrasonic vibration unit with an input current inputted thereinto;a controller, configured to adjust at least one of the pressing depth, the back pressure, the input current and the feed rate based on an expected residual compressive stress and a real time output power of the drive motor, to generate a residual compressive stress in the workpiece which is in an expected range predetermined based on the expected residual compressive stress.2. The system according to claim 1 , wherein the controller is configured to calculate at least one of an expected pressing depth claim 1 , an expected back pressure claim 1 , an expected input current and an expected feed rate claim 1 , based on the expected residual compressive stress and the real time output power claim 1 , ...

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Номер записи: 42
22-02-2018 дата публикации

Manufacturing method of precision machine tool bearing with high precision stability

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

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

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Номер записи: 43
05-03-2015 дата публикации

Steel for cold forging/nitriding, steel material for cold forging/nitriding, and cold-forged/nitrided component

Номер: US20150059933A1
Автор: Hideki Imataka, Kosuke Tanaka, Masayuki Horimoto, Yuya Gyotoku
Принадлежит: Nippon Steel and Sumitomo Metal Corp

A steel comprises, by mass percent, C: 0.10 to 0.15%, Si: not less than 0.02% and less than 0.10%, Mn: more than 0.90% and not more than 2.50%, P≦0.030%, S≦0.050%, Cr: 0.80 to 2.0%, V: 0.05 to 0.50%, Al: 0.01 to 0.07%, N≦0.0080%, O≦0.0030%, and one or more selected from Mo, Cu, Ni, Ti, Nb, Zr, Pb, Ca, Bi, Te, Se and Sb, the balance being Fe and impurities. The composition satisfies [35≦Mn/S≦200], [20≦(669.3×log e C−1959.6×log e N−6983.3)×(0.067×Mo+0.147×V)≦80], [140×Cr+125×Al+235×V≧160] and [150≦511×C+33×Mn+56×Cu+15×Ni+36×Cr+5×Mo+134×V≦200].

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Номер записи: 44
10-03-2022 дата публикации

METHOD FOR MANUFACTURING MAGNETOSTRICTIVE TORQUE SENSOR SHAFT

Номер: US20220074010A1
Автор: Fukuda Kota, Nakamura Teruyuki, ONO Junji, SUGIYAMA Yuta
Принадлежит: NSK LTD.

A method for manufacturing a magnetostrictive torque sensor shaft () to which a sensor portion () of a magnetostrictive torque sensor () is to be attached includes: a heat treatment step of subjecting an iron-based shaft member to a carburizing, quenching, and tempering process; a shot peening step of performing shot peening using a steel shot media having a Vickers hardness at least equal to 1100 and at most equal to 1300, at least in a position on the shaft member, after the heat treatment step, to which the sensor portion () is to be attached; and a surface polishing step of subjecting the shaft member after the shot peening to surface polishing. 1. A method for manufacturing a magnetostrictive torque sensor shaft to which a sensor portion of the magnetostrictive torque sensor is to be attached ,the method comprising:heat treatment step of subjecting an iron-based shaft member to a carburizing, quenching, and tempering process;a shot peening step of performing shot peening using a steel shot media having a Vickers hardness at least equal to 1100 and at most equal to 1300, at least in a position on the shaft member, after the heat treatment step, to which the sensor portion is to be attached; anda surface polishing step of subjecting the shaft member after the shot peening to surface polishing.2. The method for manufacturing the magnetostrictive torque sensor shaft according to claim 1 , wherein the surface polishing step is performed in such a manner that an arithmetic average roughness Ra of a surface of the shaft member is not more than 0.3 μm and a maximum height Rz is not more than 3 μm.3. The method for manufacturing the magnetostrictive torque sensor shaft according to claim 1 , wherein the shaft member comprises chromium steel.4. The method for manufacturing the magnetostrictive torque sensor shaft according to claim 1 , wherein the heat treatment step is performed in such a manner that a surface hardness of the shaft member after the heat treatment step ...

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Номер записи: 45
21-02-2019 дата публикации

ROLLER BURNISHING TOOL

Номер: US20190054591A1
Автор: Hahn Karlheinz
Принадлежит:

The invention relates to a roller burnishing tool () having a roller support (), which projects in an advancement direction (V) and on which, in a circumferential direction, at least one burnishing roller () for machining a workpiece surface is provided such that it can rotate about a roller axis (A), wherein the at least one burnishing roller () has a contact surface for coming into contact with the workpiece. According to the invention, the at least one burnishing roller () has a basic cylindrical shape and the at least one burnishing roller () is mounted such that it can be moved in a radial direction (R). 1. A roller burnishing tool comprising a roller support which projects in a feed direction and on which a plurality of substantially cylindrical burnishing rollers for machining a workpiece surface are circumferentially arranged , wherein each of said plurality of burnishing rollers is rotatable about a roller axis , wherein each of said plurality of burnishing rollers has an outer surface for contacting the workpiece surface , wherein each of said plurality of burnishing rollers is mounted so as to be displaceable in a radial direction , wherein the roller support comprises an annular roller cage that rotatably bears said plurality of burnishing rollers , wherein a substantially annular inner roller is disposed in the roller cage , wherein the inner roller has an outer surface , wherein the outer surface of the inner roller interacts with the outer surfaces of said plurality of burnishing rollers , and wherein the inner roller is connected to a drive shaft of the roller burnishing tool so as to transfer driving force.2. The roller burnishing tool according to claim 1 , wherein the roller support has a rotational axis that runs substantially parallel to the roller axis of each of said plurality of burnishing rollers.3. The roller burnishing tool according to claim claim 1 , wherein the inner roller is disposed within the roller cage with a clearance fit.4. The ...

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Номер записи: 46
20-02-2020 дата публикации

APPARATUS AND METHODS FOR SHOT PEENING EVALUATION

Номер: US20200058119A1
Автор: Safai Morteza
Принадлежит:

Apparatus and methods for shot peening evaluation are disclosed herein. An example apparatus for evaluating a surface that has undergone a shot peening process includes a camera to generate first image data of a first portion of the surface. The example apparatus includes a processor to determine an impact coverage value for the first portion based on the first image data and determine an effectiveness of the shot peening process for the surface based on the impact coverage value. 1. An apparatus for evaluating a surface that has undergone a shot peening process , the apparatus comprising:a camera to generate first image data of a first portion of the surface; and determine an impact coverage value for the first portion based on the first image data; and', 'determine an effectiveness of the shot peening process for the surface based on the impact coverage value., 'a processor to2. The apparatus of claim 1 , wherein the processor is to determine the effectiveness by comparing the impact coverage value to a threshold.3. The apparatus of claim 1 , wherein the camera is to generate second image data for a second portion of the surface and the processor is to:merge the first image data and the second image data to generate merged image data;determine the impact coverage value based on the merged image data; anddetermine the effectiveness based on the impact coverage value for the merged image data.4. The apparatus of claim 1 , wherein the image data includes grayscale image data claim 1 , the processor to convert the grayscale image data to binary image data.5. The apparatus of claim 4 , wherein the processor is to determine the impact coverage value based on the binary image data.6. The apparatus of claim 1 , wherein the camera includes a polarization filter.7. The apparatus of claim 1 , further including:an illumination source to emit a light on the surface; anda diffuser to diffuse the light.8. The apparatus of claim 7 , wherein the illumination source is disposed at ...

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Номер записи: 47
28-02-2019 дата публикации

PROCESS FOR FORMING A STAINLESS STEEL WELDMENT RESISTANT TO STRESS CORROSION CRACKING

Номер: US20190062857A1
Автор: Bullard Charles, Singh Krishna P.
Принадлежит:

A process or method for forming a stainless steel weldment comprises steps including rolling a plate to form a cylindrical shell with an open butt joint or seam, welding the butt seam to close the seam, hard rolling the weld seam region including the adjacent heat affected zones in the base material, and peening the weld seam region. The weld seam region is peened in multiple successive and wider passes to progressively produce wider peening strips or regions along the weld lines. The weld may be a full penetration double-V type groove weld with double weld bevels. The welding process may include first forming the exterior weld bevel following by forming the interior weld bevel. The foregoing fabrication process converts residual tensile stress fields on the exterior of the shell weldment to compressive stress fields less susceptible to the adverse effects of stress corrosion cracking. 1. A method for fabricating a shell weldment , the method comprising:providing a cylindrical shell of stainless steel having an open butt seam;welding the butt seam to close the butt seam with a weld, the welding creating a heat affected zone in the shell adjoining the weld;rolling a weld zone collectively comprising the weld and heat affected zone under a compressive force after welding; andpeening the weld zone.2. The method according to claim 1 , wherein the weld zone is peened in multiple passes claim 1 , each of the peening passes being selected to successively and progressively produce wider peened regions on the shell along the weld zone.3. The method according to claim 2 , wherein the weld is a double-V weld formed by first forming an exterior weld bevel following by forming an interior weld bevel to complete the weld.4. The method according to claim 1 , wherein the compressive force in the step of rolling the weld zone is created via a mechanical roller claim 1 , the compressive force having a magnitude such that a nominal contact stress at a roller-to-shell interface is in ...

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Номер записи: 48
28-02-2019 дата публикации

PORTABLE CAVITATION PEENING METHOD AND APPARATUS

Номер: US20190062858A1
Автор: Diep Hali The, Sanders Daniel Gordon, Thoreson Amanda Jean
Принадлежит: The Boeing Company

A method of cavitation peening may include coupling a moveable water source to a portable nozzle, through a flexible conduit. The method may include positioning the nozzle adjacent a treatment surface and discharging a first and second stream of fluid through a first and second channel of the nozzle, with the second channel concentrically positioned around the first channel. The first stream may have a first pressure, and the second stream may have a second pressure, the first pressure being greater than the second pressure and the two streams combining to generate a cloud of cavitation bubbles. 1. An apparatus for cavitation peening , comprising:a fluid source,a first pump device configured to receive a first fluid stream from the fluid source,a second pump device configured to receive a second fluid stream from the fluid source,a nozzle assembly configured to be translated over a stationary treatment area on a work piece, each of the pumps being connected to the nozzle via a flexible conduit, the nozzle being configured to mix fluid received from the first and second pumps to generate a cloud of cavitation bubbles, anda sensor configured to measure a stand-off distance between the nozzle assembly and the stationary treatment area.2. The apparatus of claim 1 , wherein the nozzle assembly includes a handle configured for manual manipulation of the nozzle.3. The apparatus of claim 1 , wherein the first pump device pumps the first fluid stream at a first pressure claim 1 , and the second pump device pumps the second fluid stream at a second pressure claim 1 , the first pressure being higher than the second pressure.4. The apparatus of claim 3 , wherein the first pressure is at least 1000 p.s.i. greater than the second pressure.5. The apparatus of claim 3 , wherein the first pressure is at least 2000 p.s.i. greater than the second pressure.6. The apparatus of claim 1 , wherein the flexible conduits carrying the first and second fluid streams are at least partially ...

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Номер записи: 49
28-02-2019 дата публикации

STEEL, PRODUCT CREATED FROM SAID STEEL, AND MANUFACTURING METHOD THEREOF

Номер: US20190062861A1
Автор: PERRIN GUERIN Valerie
Принадлежит:

Disclosed is a steel whose composition includes specified wt % of: Ni, Mo, Co, Mo+Co+Si+Mn+Cu+W+V+Nb+Zr+Y+Ta+Cr+C+Al+B+Ti+N, Ni+Co+Mo, Al, Ti, N, Si, Mn, C, S, P, B, H, O, Cr, Cu, W, Zr, Ca, Mg, Nb, V, Ta, Y, the remainder being iron and impurities resulting from production. The inclusion population, observed by image analysis on a polished surface of 650 mmif the steel is in the form of a hot-formed part or a hot-rolled sheet and 800 mmif the steel is in the form of a cold-rolled sheet, does not include non-metal inclusions of an equivalent diameter greater than 10 μm. Also disclosed are a product created from the steel, and a manufacturing method. 123-. (canceled)24. Steel , having the following composition in weight percent:10.0%≤Ni≤24.5%;1.0%≤Mo≤12.0%;1.0%≤Co≤18.0%;14.0%≤Mo+Co+Si+Mn+Cu+W+V+Nb+Zr+Y+Ta+Cr+C+Al+B+Ti+N≤29.0%;21.5%≤Ni+Co+Mo≤47.5%;traces≤Al≤4.0%;traces≤Ti≤0.1%;traces≤N≤0.010%;traces≤Si≤4.0%;traces≤Mn≤13.0%;traces≤C≤0.03%;traces≤S≤0.0020%;traces≤P≤0.005%;traces≤B≤0.01%;traces≤H≤0.0005%;traces≤O≤0.03%;traces≤Cr≤5.0%;traces≤Cu≤4%;traces≤W≤6.0%;traces≤Zr≤4.0%;traces≤Ca≤0.1%;traces≤Mg≤0.8%;traces≤Nb≤4.0%;traces≤V≤4.0%;traces≤Ta≤4.0%;traces≤Y≤4.0%;{'sup': 2', '2, 'and the inclusion population observed under image analysis on a polished surface of 650 mmif the steel is in the form of a hot worked part or hot rolled sheet, and 800 mmif the steel is in the form of cold rolled sheet, does not contain non-metallic inclusions having an equivalent diameter larger than 10 μm.'}25. Method for producing a steel product , wherein:{'claim-ref': {'@idref': 'CLM-00024', 'claim 24'}, 'a remelting electrode is prepared in steel having a composition conforming to that in ;'}this electrode is remelted using a single or multiple remelting process to obtain a remelted electrode;the remelted electrode is subjected to at least one hot working at a temperature of between 1050 and 1300° C., to obtain hot worked sheet or hot worked strip;and optionally heat treatment is applied to ...

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Номер записи: 50
27-02-2020 дата публикации

Method for Manufacturing a Complex-Formed Component

Номер: US20200061690A1
Автор: Fröhlich Thomas, Lindner Stefan
Принадлежит:

The present invention relates to a method for manufacturing a complex-formed component () by using austenitic steels in a multi-stage process () where cold forming () and heating () are alternated for at least two multi-stage process () steps. The material during every process step and a component produced has an austenitic microstructure with non-magnetic reversible properties. 1. A method for manufacturing a complex-formed component , comprising subjecting austenitic steels to a multi-stage process where cold forming and heating are alternated for at least two multi-stage process steps , wherein a material during every process step and a component produced has an austenitic microstructure with non-magnetic reversible properties.2. The method according to claim 1 , wherein during heating twins in the microstructure of the used TWIP material are dissolved and during forming the twins in the microstructure of the used TWIP material are rebuilt.3. The method according to claim 1 , wherein an initial thickness of a sheet used for the multi-staged process is less than 3.0 nm.4. The method according to claim 1 , wherein a sum of the carbon and nitrogen in the austenitic steel to be deformed is more than 0.4% weight % claim 1 , but less than 1.2 weight %.5. The method according to claim 1 , wherein the component is in the form of a sheet claim 1 , a tube claim 1 , a profile claim 1 , a wire or a joining rivet.6. The method according to claim 1 , wherein the material used is a stable full-austenitic steel using the TWIP hardening mechanism with a defined stacking fault energy of between 20 and less than or equal to 30 mJ/m.7. The method according to claim 1 , wherein the used material has an initial elongation of Athat is greater than or equal to 30%.8. The method according to claim 1 , wherein the used austenitic TWIP steel has a manganese weight-content of between 10% and less than or equal to 26%.9. The method according to claim 1 , wherein the used austenitic TWIP ...

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Номер записи: 51
08-03-2018 дата публикации

SHOT PEENING TOOLS AND RELATED METHODS

Номер: US20180065229A1
Автор: Blasingame Van, Johnson Albert, Spinner Daniel
Принадлежит: SUPERIOR SHOT PEENING, INC.

A tool for cold-working a metal substrate of a longitudinal bore having a diameter less than about eight inches includes a deflector tip configured to direct accelerated shot having diameters on average not larger than 100 mils (2.54 mm) toward a surface of the metal substrate at an angle between about 70 degrees and about 85 degrees relative to the surface, thereby providing increased compressive stresses in the metal substrate. 1. A tool for cold-working a metal substrate of a longitudinal bore having a diameter less than about eight inches , the tool comprising a deflector tip configured to direct accelerated shot having diameters on average not larger than 100 mils (2.54 mm) toward a surface of the metal substrate at an angle between about 70 degrees and about 85 degrees relative to the surface , thereby providing increased compressive stresses in the metal substrate.2. The tool of claim 1 , further comprising a venturi nozzle having an abrasion resistance of at least 50 HRC and configured to accelerate the shot directed at the surface of the metal substrate.3. The tool of claim 2 , wherein shot is capable of being fed through the venturi nozzle at a flow rate of at least one to six pounds per minute (1.36 kg/min).4. The tool of claim 1 , wherein compressive stresses of at least 15 ksi are provided in the metal substrate beneath the surface up to about 0.04 inches.5. The tool of claim 1 , wherein the deflector tip is configured to distribute the accelerated shot radially outward in a 360-degree pattern.6. The tool of claim 1 , wherein the deflector tip is configured to be rotated 360 degrees to distribute the accelerated shot radially outward in a 360-degree pattern.7. The tool of claim 6 , wherein the deflector tip comprises a substantially smooth radius for deflecting the shot radially outward.8. The tool of claim 1 , wherein peened coverage over the metal surface of at least about one hundred percent (100%) is provided.9. A method of cold-working a metal ...

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Номер записи: 52
29-05-2014 дата публикации

Methods for treating a cast iron workpiece

Номер: US20140143992A1
Автор: Jeff Wang, Xiaochuan XIONG
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Examples of methods for treating a cast iron workpiece are disclosed herein. In one example of the method, a nanocrystallized microstructure at a finish surface of the cast iron workpiece is roller burnished. The roller burnishing reduces roughness of the nanocrystallized microstructure. In another example of the method, a machined, finish surface of the cast iron workpiece is deformed by rubbing the machined, finish surface against a blunt tool to form a nanocrystallized microstructure at the machined, finish surface. The machined, finish surface is cooled simultaneously with the deforming to promote nanocrystallization of the machined, finish surface.

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Номер записи: 53
27-02-2020 дата публикации

Dynamically Impacting Method for Simultaneously Peening and Film-forming on Substrate as Bombarded by metallic Glass Particles

Номер: US20200063226A1
Автор: Chen Kuan-Wei, Jang Jason Shian Ching, Wei Po-Jen
Принадлежит:

A dynamically impacting method comprising simultaneously peening a substrate surface and forming a thin film of metallic glass on the substrate surface for increasing the surface hardness, fatigue resistance, anti-fracture toughness and corrosion resistance of the substrate simultaneously. 1. A dynamically impacting method comprising:A. Preparation of metallic glass particles or liquid metal alloy particles; andB. Bombardment of the metallic glass particles or liquid metal alloy particles as driven by a compressed inert gas against a substrate to harden a surface of the substrate and to form a thin-film of metallic glass or liquid metal alloy for increasing corrosion resistance of the surface of the substrate.2. A method according to claim 1 , wherein said metallic glass particles are made by melting a metallic glass raw material in a vacuum furnace and then quickly cooled and atomized to form metallic glass particles.3. A method according to claim 1 , wherein said bombardment of metallic glass particles on the substrate comprises:a high-pressure bombardment bye bombarding metallic glass particles under a high pressure ranging from 5 bars through 15 bars to harden and smoothen the surface of said substrate; anda low-pressure bombardment by further bombarding the metallic glass particles under a low pressure ranging from 0.1 bars through 5 bars to rapidly superimposedly form thin films of metallic glass on said substrate to form corrosion resistance and polishing surface of said substrate.4. A method according to claim 1 , wherein said metallic glass particles as obtained from said vacuum furnace are collected and classified into a plurality of particle sizes for optional or selective uses. U.S. Pat. No. 8,323,729 to Inoue et al. disclosed a process for producing a metal member comprising: a shot peening treatment including projecting particles onto a surface of a metal material comprising an aluminum alloy using a compressed gas for enabling fatigue properties of ...

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Номер записи: 54
11-03-2021 дата публикации

METHOD FOR QUENCH SEASONING OF IRON/STEEL COOKWARE

Номер: US20210071276A1
Автор: HENRY MARK JAMES
Принадлежит:

The method for quench seasoning multiple units of iron/steel cookware includes the steps of: preheating each cookware unit to a temperature above the smoke point of oil in an oil bath; rapidly plunging the preheated cookware units into the oil bath to completely submerge the cookware units and quickly enough to ensure the temperature of the cookware units remain above oil smoke point; controlling the temperature of the oil bath to a ensure that the temperature of the oil bath does not reach a temperature close to oil smoke point, for example, a temperature within 20 degrees below smoke point, and retrieving the cookware units from the oil bath. 1. A method for quench seasoning multiple units of iron/steel cookware comprising the steps of:preheating each cookware unit to a temperature above the smoke point of oil in an oil bath;rapidly plunging the preheated cookware units into an oil bath to completely submerge the units and quickly enough to ensure the temperature of the cookware units remain above oil smoke point;controlling the temperature of the oil bath to a ensure that the temperature of the oil bath does not reach a temperature too close to oil smoke point; andretrieving the cookware units from the oil bath.2. The method of wherein the step of preheating the cookware units comprises the steps of:heating an oven;placing the cookware units on a conveyor belt; andmoving the cookware units on the conveyor belt through the oven such that the cookware units are heated to a temperature above the smoke point of oil in an oil bath.3. The method of wherein the step of rapidly plunging the preheated cookware units into an oil bath comprises providing a chute extending from the oven to the oil bath such that the cookware units move from the oven to the oil bath.4. The method of further comprising the step of draining excess oil back into the oil after the cookware units are removed from the oil bath.5. The method of further comprising the step of draining excess oil by ...

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Номер записи: 55
29-05-2014 дата публикации

TOOLS FOR ENHANCING SURFACE NANOCRYSTALLIZATION AND METHOD FOR MEASURING A NANOCRYSTALLIZATION EFFECT

Номер: US20140149053A1
Автор: Sun Li, Wang Jeff, XIONG XIAOCHUAN
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A tool for enhancing surface nanocrystallization includes a tool base to removably attach to a machine, a head portion attached to the tool base, and a plurality of blunt pellets. Each blunt pellet i) has a different shape at a respective workpiece-contacting surface to generate a different pressure distribution and depth of indentation during surface nanocrystallization and extends outward from the head portion, or ii) has a same shape at the respective workpiece-contacting surface and extends outward from the head portion. 1. A tool for enhancing surface nanocrystallization , the tool comprising:a tool base to removably attach to a machine;a head portion attached to the tool base; anda plurality of blunt pellets i) each having a different shape at a respective workpiece-contacting surface to generate a different pressure distribution and depth of indentation during surface nanocrystallization and extending outward from the head portion, or ii) each having a same shape at the respective workpiece-contacting surface and extending outward from the head portion.2. The tool as defined in wherein the different shapes at the respective workpiece-contacting surface include a spherical shape claim 1 , a parabolic shape claim 1 , and an ellipsoidal shape.3. The tool as defined in wherein the plurality of blunt pellets are aligned such that at least one of the plurality of blunt pellets follows at least one other of the plurality of blunt pellets in a same process pass.4. The tool as defined in wherein the head portion is spherical claim 1 , and wherein the same shape is selected from the group consisting of a spherical shape claim 1 , a parabolic shape claim 1 , and an ellipsoidal shape.5. The tool as defined in claim 1 , further comprising a coating deposited at least on the workpiece-contacting surface of each of the plurality of blunt pellets claim 1 , the coating selected from the group consisting of diamond like coating (DLC) claim 1 , TiN claim 1 , TiCN claim 1 , ...

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Номер записи: 56
19-03-2015 дата публикации

Control Feedback Loop for Real-time Variable Needle Peen Forming

Номер: US20150075240A1
Автор: James B. Castle, James E. Pillers, John Z. Lin, Lauren K. Lundquist, Mckay A. Kunz, Sebastian Nervi
Принадлежит: Boeing Co

Method and apparatus are provided for processing and changing the physical characteristics of a metal workpiece into a final metal component. Predetermined processing parameters are established for achieving a final metal component. The metal workpiece is positioned securely on a support during the changing of the physical characteristics. Impacts are applied to a surface of the workpiece multiple times for achieving the final metal component while controlling the impacting with the predetermined processing parameters. A sensor is provided for continuously sensing the currently existing physical conditions of the workpiece during impacting. The predetermined processing parameters are changed into adjusted processing parameters and the impacts are changed in reaction to the currently existing physical conditions of the workpiece from the sensing and processing of the workpiece until the final metal component has been achieved.

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Номер записи: 57
07-03-2019 дата публикации

SMART INSTALLATION/PROCESSING SYSTEMS, COMPONENTS, AND METHODS OF OPERATING THE SAME

Номер: US20190070654A1
Автор: Bakken Doug R., Dooley Kevin J., Johnson Timothy Howard, Ross James Ryunoshin
Принадлежит:

A processing system employs a processing tool to process workpieces, for example cold working holes and/or installing expandable members into holes. Sensors sense various aspects of the processing. Information regarding performance of the process and/or materials may be stored, for example a hole-by-hole or a workpiece-by-workpiece basis, allowing validation of processing. Information also allows dynamic operation of the processing tool. Analysis of response relationships (e.g., pressure or force versus position or distance) may provide insights into the process and materials, and/or facilitate the real-time feedback including control, alerts, ordering replacement for consumable components. 116.-. (canceled)17. A method of operating a system to process a number of workpieces , each having at least one hole , with a processing tool , the method comprising:sensing by a number of sensors a number of operational parameters of each of a number of operational cycles of processing respective ones of the holes in the number of workpieces;determining by at least one processor whether at least one of the sensed operational parameters satisfies a respective condition;taking a first action by the at least one processor if the sensed operational parameters satisfies a respective condition;taking a second action by the at least one processor, if the sensed operational parameters does not satisfy the respective condition, the second action different from the first action; andcausing by at least one processor, storing of information to at least one nontransitory storage medium, the information indicative of characteristics of a number of manufacturing operations based on the sensed operational parameters, where the stored information represents a number of aspects of at least one of the processing or the materials and is stored to be retrievable on at least one of a hole-by-hole basis or a workpiece-by-workpiece basis.1817. The method of wherein sensing a number of operational ...

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Номер записи: 58
07-03-2019 дата публикации

Component manufacturing method and component

Номер: US20190071749A1
Автор: Haruka YANO, Kazumi Serizawa
Принадлежит: Toyota Motor Corp

A component manufacturing method includes: disposing, in a fluid, an unprocessed component having a hole that has an opening in an outer surface of the unprocessed component; creating a flow of the fluid such that air bubbles resulting from laser peening performed by irradiating an inner wall of the hole of the unprocessed component with a laser beam in the fluid flow along the hole; setting an irradiation area of the laser beam in an inner surface of the hole; and in the fluid of which the flow has been created, irradiating the irradiation area with the laser beam from the side of the outer surface through the opening.

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Номер записи: 59
16-03-2017 дата публикации

METHOD OF MANUFACTURING BUMPER BACK BEAM FOR VEHICLES

Номер: US20170073788A1
Автор: Cha Dong Eun, Kim Dae Jung, Kim Hyun Gyung, LEE Mun Yong, PARK Si Young, Yoon Jin Young
Принадлежит:

A method of manufacturing a bumper back beam for vehicles is provided. The method includes shaping a planar strip using a pressing process and a planar surface component are formed within a central portion of the strip in a longitudinal direction thereof, and recessed components are formed on opposite sides of the planar surface part, and a first flange is formed on an exterior edge of each recessed component. Further, each of the recessed components are bent vertically around a bending boundary line formed between the planar surface component and the corresponding recessed component and the opposite first flanges contact the planar surface component. Additionally, the edges of the opposite first flanges are welded to the planar surface component and the back beam has a pair of closed section components defined by the planar surface component and the recessed components. 1. A method of manufacturing a bumper back beam for vehicles , comprising:shaping a planar strip using a pressing process, a planar surface component is formed in a central portion of the strip in a longitudinal direction thereof, recessed components each of which extend in the longitudinal direction and protrudes downward are formed on opposite sides of the planar surface part, and a first flange having a planar shape is formed on an exterior edge of each of the recessed components;bending each of the opposite recessed components vertically around a bending boundary line formed between the planar surface component and the corresponding recessed component and the opposite first contacts an upper surface of the planar surface part; andwelding, to the planar surface part, edges of the opposite first flanges that contact the upper surface of the planar surface component and the bumper back beam has a pair of closed section components defined by the planar surface component and the opposite recessed components.2. The method according to claim 1 , wherein:the shaping includes forming, the first flanges ...

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Номер записи: 60
26-03-2015 дата публикации

Method for improving durability of exhaust pipe, and exhaust gas purification apparatus

Номер: US20150082776A1
Автор: Jouji HAGIWARA, Kazuhiro Hirakawa, Norihiro Fujisawa, Yoshihiko Nozaki
Принадлежит: UD Trucks Corp

In an exhaust gas purification apparatus or other apparatuses that are supplied with ammonia generated from a urea aqueous solution and causes selective reduction and purification of nitride oxides, a shot peening treatment is applied to a welded portion of its exhaust pipe which is made of a ferritic stainless steel plate and through which exhaust gas containing ammonia and hydrogen passes. By shot peening the welded portion of the exhaust pipe, a tensile residual stress in the welded portion of the exhaust pipe can be replaced with a compressive residual stress, and further the diameter of metal crystal grains in the welded portion can be reduced. In this way, the durability of the exhaust pipe can be improved.

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Номер записи: 61
14-03-2019 дата публикации

SURFACE TREATMENT METHOD FOR METAL PRODUCT AND METAL PRODUCT

Номер: US20190076987A1
Автор: ISHIBASH Shozo, Kondo Yusuke, MASE Keiji
Принадлежит:

A surface treatment method capable of continuously forming a uniform nanocrystalline structure along the surface of a metal product regardless of whether the metal product is hard or soft. A substantially spherical spray powder that has a median diameter of 1-20 μm and a fall velocity in the air of 10 sec/m or more is sprayed onto a metal product at a spray pressure of 0.05-0.5 MPa. Thus, even when the metal product is made of a soft material, it is possible to form a uniform continuous nanocrystalline structure layer in which nanocrystals are micronized to an average crystal grain size of not more than 300 nm, preferably not more than 100 nm, without forming a laminar worked structure, impart a high compression residual stress of from about −180 MPa up to the order of −1200 MPa, and strengthen the surface of the metal product. 1. A method for surface treatment of a metal article comprising:ejecting substantially spherical ejection particles having a median diameter d50 of from 1 μm to 20 μm and a falling time through air of not less than 10 sec/m against a metal article at an ejection pressure of from 0.05 MPa to 0.5 MPa;forming a nano-crystal structure layer continuously along a surface of the metal article in a zone to a prescribed depth from the surface of metal article by uniform micronization to nano-crystals having an average crystal grain diameter of not greater than 300 nm; andimparting compressive residual stress to the surface of the metal article.2. The method for surface treatment of the metal article according to claim 1 , wherein the ejection velocity of the ejection particles is not less than 80 m/sec.3. The method for surface treatment of the metal article according to claim 1 , wherein the material of the metal article is either aluminum or an aluminum alloy claim 1 , and the crystal grain diameter of the nano-crystal structure layer is micronized to a crystal grain diameter of not greater than 100 nm.4. The method for surface treatment of the ...

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Номер записи: 62
14-03-2019 дата публикации

STEEL COMPONENT, GEAR COMPONENT, AND PRODUCING METHOD FOR STEEL COMPONENT

Номер: US20190078171A1
Автор: KOYAMA Tatsuya, Kubota Manabu, MATSUZAKA Keisuke, Miyanishi Kei, Obayashi Koji, OKADA Kazuaki, SAKAKIBARA Masashi
Принадлежит:

In this steel component, the concentration of C in a surface layer is 0.85 mass % or more to 1.2 mass % or less, which is higher than the concentration of C in a starting material steel, the surface layer has a volume ratio of a retained-austenite structure higher than 0% and lower than 10%, the remainder of the surface layer is a martensitic structure, the area fraction of grain boundary carbides in the surface layer is lower than 2%, a layer inside the surface layer is higher than the surface layer in a volume ratio of a retained-austenite structure, and in the layer inside the surface layer, the remainder is a martensitic structure. 1. A steel component that is made of starting material steel comprising , as chemical components:C (carbon): 0.05 mass % or more to 0.30 mass % or less;Si (silicon): 1.0 mass % or more to 3.0 mass % or less;Mn (manganese): 0.1 mass % or more to 3.0 mass % or less;P (phosphorus): 0.03 mass % or less;S (sulfur): 0.001 mass % or more to 0.150 mass % or less;Cr (chromium): 0.01 mass % or more to 0.20 mass % or less;Al (aluminum): 0.01 mass % or more to 0.05 mass % or less;N (nitrogen): 0.003 mass % or more to 0.030 mass % or less; andFe, trace amounts of other alloy components as optional components, and unavoidable impurities: a balance, whereina concentration of C in a surface layer of the steel component is 0.85 mass % or more to 1.2 mass % or less that is higher than a concentration of C in the starting material steel,the surface layer has a volume ratio of a retained-austenite structure of higher than 0% and lower than 10%, a remainder of the surface layer is a martensitic structure, and an area fraction of grain boundary carbides in the surface layer is lower than 2%, anda layer inside the surface layer has a volume ratio of a retained-austenite structure higher than the volume ratio of the retained-austenite structure in the surface layer, and in the layer inside the surface layer, a remainder is a martensitic structure.2. The ...

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Номер записи: 63
24-03-2016 дата публикации

SYSTEM FOR AND METHOD OF PERFORMING LASER SHOCK PEENING ON A TARGET WITH A FLUID FLOW PATH SANDWICHED BETWEEN A TRANSPARENT TO LASER LIGHT SOLID MEDIUM AND THE TARGET

Номер: US20160083815A1
Автор: GLASER Daniel, POLESE Claudia
Принадлежит:

The invention is concerned with a system for performing Laser Shock Peeing on a target (). The system includes a device () for generating and transmitting a laser pulse to the target () and a fluid source for supplying a fluid into a fluid flow path arranged between an inlet () and an outlet (). A solid medium (), which is transparent to incident laser light (), is located in the laser path so as to allow the laser pulse to pass through it. In use, the fluid flow path is sandwiched between the solid medium () and the target () during the laser shock peening process so that the fluid is in direct contact with the solid medium () and the target (), thereby eliminating any air-fluid interface in the travel path of the laser pulse. The fluid is also supplied into the fluid flow path having a constant thickness such that a second shock event through cavitation in the fluid layer occurs upon the collapse of a plasmalvapour bubble generated after the laser pulse striking the target. The invention also concerns a method of performing Laser Shock Peeing using the system in accordance with the invention and, in particular, the use of the first bubble oscillation period to determine the amount of energy being delivered to the target (). The monitoring of the energy being delivered to the target () provides for process diagnostics during the LSP procedure. 116.-. (canceled)17. A process diagnostic method for a Laser Shock Peening process performed on a target , the method including the following steps:providing a device for generating and transmitting a laser pulse to the target;positioning the target in the laser path so that a surface of the target is impacted by the laser pulse;locating a solid medium in the laser path which is transparent to incident laser light to allow the laser pulse to pass through it;supplying a fluid into a fluid flow path arranged between the solid medium and the contact surface of the target so that the fluid is in direct contact with the solid ...

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Номер записи: 64
31-03-2022 дата публикации

BORON STEEL HIGH-PRESSURE CARTRIDGE CASE

Номер: US20220097124A1
Автор: Swank Brian
Принадлежит:

A boron steel high pressure cartridge case and method of manufacturing the same is provided. The method includes cold forming a cartridge case into a drawn blank or a tubular component; annealing the cartridge case using a belt furnace, flame furnace, induction furnace, or a batch furnace; performing a machine ejector slot and trim on the cartridge case; forming the shoulder and neck of the cartridge case; performing a heat treatment of the cartridge case; and tempering the cartridge case. The cartridge case is fabricated of boron steel including ≤1.0% boron. 1. A method comprising:cold forming a cartridge case into a drawn blank or a tubular component, wherein the cartridge case is fabricated of boron steel;annealing the cartridge case using a belt furnace, flame furnace, induction furnace, or a batch furnace;performing a machine ejector slot and trim on the cartridge case;forming the shoulder and neck of the cartridge case;performing a heat treatment of the cartridge case; andtempering the cartridge case.2. The method of claim 1 , wherein the cartridge case includes a phosphorus and polymer coating.3. The method of claim 1 , wherein the boron steel is spherodized annealed at finished size (SAFS).4. The method of claim 1 , wherein the annealing is configured to provide stress relief.5. The method of claim 1 , wherein the annealing occurs at a temperature from between 900° F. and 1100° F. for 10 minutes to 15 minutes.6. The method of claim 1 , wherein the heat treatment occurs at a temperature between 1600° F. and 1650° F. for 25 minutes to 40 minutes.7. The method of claim 1 , wherein the tempering occurs at a temperature between 575° F. and 625° F. for two hours.8. The method of claim 1 , further comprising:filling an interior volume of the cartridge case with a propellant.9. The method of claim 8 , further comprising:after firing the cartridge case from a weapon, re-filling the interior volume of the cartridge case with additional propellant.10. A cartridge case ...

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Номер записи: 65
19-06-2014 дата публикации

Surface treatment of a metal part

Номер: US20140166160A1
Автор: Emmanuel Dransart, Joan Samuel, Michel Baron, Teddy Muller, Tony Prezeau
Принадлежит: Winoa SA

A process for the surface treatment of a metal part comprises: exposing a surface ( 1 ) of the metal part to a stream of substantially spherical particles, so that any portion of said surface receives said particles along several primary incidences, the primary incidences of the particles on a portion of the surface being essentially distributed in a cone or a conical film which has an outer half apex angle between 10° and 45°, until a surface layer ( 3 ) of nanostructures having an average thickness of several tens of microns is obtained, the particles having a diameter of less than 2 mm and greater than 0.1 mm and being projected at a speed between 40 m/s and 100 m/s. A thermochemical treatment is then applied, in particular a low-temperature treatment of the nitriding type or a high-temperature treatment of the low-pressure carbonitriding type.

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Номер записи: 66
19-06-2014 дата публикации

Surface Contouring of a Weld Cap and Adjacent Base Metal Using Ultrasonic Impact Treatment

Номер: US20140169863A1
Автор: Abston, Hanes Taylor, II Samuel B., Sharman David John
Принадлежит:

A method for forming a smooth interface between a weld cap and an adjacent base metal utilizing ultrasonic impact treatment. The method improves the geometric profile of a weld while imparting a compressive residual stress layer on the weld metal and base metal thereby alleviating the tensile residual stresses imparted to the metals during welding. The contouring process does not remove material, as in grinding, but plastically deforms the surface being treated producing a densified surface, in turn providing a smooth weld cap and base metal surface finish without the loss of base or weld metal thickness. 1. A method for modifying a weld seam including a weld metal , a base metal and a first weld metal to base metal interface , wherein the weld metal forms a weld cap produced by one or more cap weld passes , the method comprising imparting a desired contour to the weld seam by introducing pulses of ultrasonic wave energy into the weld seam through periodic ultrasonic mechanical impulse impacts.2. The method according to wherein the periodic ultrasonic mechanical impulse impacts are introduced to the weld seam by a tool including one or more ultrasonically movable impacting elements.3. The method according to further comprising texturing the weld cap by performing a first roughing pass along the weld seam whereby the one or more ultrasonically movable impacting elements are applied to the weld metal and moved along a length of the weld seam in a first orbital pattern.4. The method according to wherein the first orbital pattern is essentially centered along a longitudinal axis of the weld seam.5. The method according to further comprising texturing the weld cap and the first weld metal to base metal interface by performing a second roughing pass whereby the one or more ultrasonically movable impacting elements are applied to the weld metal claim 3 , the base metal and the first weld metal to base metal interface and moved along a length of the weld seam in a second ...

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Номер записи: 67
30-03-2017 дата публикации

CORROSION AND CRACKING RESISTANT HIGH MANGANESE AUSTENITIC STEELS CONTAINING PASSIVATING ELEMENTS

Номер: US20170088910A1
Автор: Jin Hyun Woo, LING Shiun, Ma Ning
Принадлежит: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY

Improved steel compositions and methods of making the same are provided. The present disclosure provides advantageous corrosion and/or cracking resistant steel. More particularly, the present disclosure provides high manganese (Mn) steel compositions having enhanced corrosion and/or cracking resistance, and methods for fabricating high manganese steel compositions having enhanced corrosion and/or cracking resistance. Methods for fabricating high manganese steel compositions (e.g., via passivation) having enhanced corrosion and/or cracking resistance are also provided. 1. A method for fabricating a ferrous based component comprising the steps of:a. providing a composition having from 8 to 30 weight % manganese, from 11 to 30 weight % chromium, and the balance iron;b. melting the composition in a controlled environment to produce a liquid alloy steel composition;c. cooling the liquid alloy steel composition to form an alloy steel composition;d. hot deforming the alloy steel composition;e. re-heating the alloy steel composition for a pre-determined time period;f. cooling the alloy steel composition; andg. Cold deforming the alloy steel composition.2. The method for fabricating a ferrous based component of claim 1 , wherein step b) includes melting the composition at 1600° C. for 30 minutes.3. The method for fabricating a ferrous based component of claim 1 , wherein step c) includes cooling the liquid alloy steel composition to ambient temperature to form the alloy steel composition.4. The method for fabricating a ferrous based component of claim 1 , wherein step d) includes hot deforming the alloy steel composition at or above 800° C.5. The method for fabricating a ferrous based component of claim 1 , wherein step e) includes re-heating the alloy steel composition at or above 1000° C. for one hour.6. The method for fabricating a ferrous based component of claim 1 , wherein step e) includes re-heating the alloy steel composition at or above 1200° C. for one hour.7. The ...

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Номер записи: 68
07-04-2016 дата публикации

Heat-resistant cold rolled ferritic stainless steel sheet, hot rolled ferritic stainless steel sheet for cold rolling raw material, and methods for producing same

Номер: US20160097114A1
Автор: Fumio Fudanoki, Junichi Hamada, Naoto Ono, Tadashi Komori, Toshio Tanoue, Yoshiharu Inoue, Yuji Koyama
Принадлежит: Nippon Steel and Sumikin Stainless Steel Corp

A heat-resistant cold rolled ferritic stainless steel sheet containing, in mass %, 0.02% or less of C, 0.1% to 1.0% of Si, greater than 0.6% to 1.5% of Mn, 0.01% to 0.05% of P, 0.0001% to 0.0100% of S, 13.0% to 20.0% of Cr, 0.1% to 3.0% of Mo, 0.005% to 0.20% of Ti, 0.3% to 1.0% of Nb, 0.0002% to 0.0050% of B, 0.005% to 0.50% of Al, 0.02% or less of N, with the balance being Fe and inevitable impurities, in which {111}-oriented grains are present at an area ratio of 20% or greater in a region from a surface layer to t/4 (t is a sheet thickness), {111}-oriented grains are present at an area ratio of 40% or greater in a region from t/4 to t/2, and {011}-oriented grains are present at an area ratio of 15% or less in the entire region in a thickness direction.

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Номер записи: 69
28-03-2019 дата публикации

Systems and methods for treating an engine flange

Номер: US20190091753A1
Автор: James R. Midgley, Jonathan Lemoine, Michael J. Schober
Принадлежит: United Technologies Corp

A method may comprise providing an M-flange of a gas turbine engine, wherein the M-flange may comprise a bolt hole therethrough defined by a bolt hole circumference between an inner diameter and an outer diameter of the M-flange; heating a mandrel; inserting the heated mandrel into the bolt hole such that an outer edge of the heated mandrel contacts the bolt hole circumference; and plastically deforming the bolt hole circumference to strengthen the bolt hole circumference in response to the applying the heated mandrel, producing a plastically deformed bolt hole.

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Номер записи: 70
12-05-2022 дата публикации

Superaustenitic Material

Номер: US20220145436A1
Автор: FLUCH Rainer, KEPLINGER Andreas, VICHYTIL Clemens
Принадлежит:

A superaustenitic material is provided for use in chemical plant construction, maritime conditions, oilfield or gas field technology. The material resists corrosion, in particular corrosion in mediums with high chloride concentrations or in sulfuric acid conditions. 4. The superaustenitic material according to claim 1 ,whereinthe material is produced by a method comprising secondary metallurgical processing of the molten metal, casting into blocks, hot forming, optional cold forming, and optional further mechanical processing.5. The superaustenitic material according to claim 1 ,wherein{'sub': 'p0.2', 'the material has a yield strength Rin excess of 500 MPA.'}6. The superaustenitic material according to claim 1 ,wherein{'sub': 'v', 'the material has a notched bar impact work at room temperature in the longitudinal direction Ain excess of 300 J.'}7. The superaustenitic material according to claim 1 ,whereinafter the cold deformation, the material is fully austenitic.8. The superaustenitic material according to claim 1 ,wherein themanganese is present at about 0.5% to about 4.0% by weight of the alloy.9. The superaustenitic material according to claim 1 ,wherein thechromium is present at about 24% to about 29.8% by weight of the alloy.10. The superaustenitic material according to claim 1 ,wherein themolybdenum is present at about 2.5% to about 4.5% by weight of the alloy.11. The superaustenitic material according to claim 1 ,wherein thenickel is present at about 12% to about 18% by weight of the alloy.12. The superaustenitic material according to claim 1 ,wherein thenitrogen is present at about 0.50% to about 0.85% by weight of the alloy.13. The superaustenitic material according to claim 1 ,wherein thecobalt is present at less than about 1% by weight of the alloy.14. The superaustenitic material according to claim 1 ,wherein thecopper is present at about 1% to about 4% by weight of the alloy.15. The superaustenitic material according to claim 1 ,wherein thetungsten ...

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Номер записи: 71
12-04-2018 дата публикации

METHOD FOR FORMING A PIN BORE

Номер: US20180100464A1
Автор: Imai Akihiro, ISHIWATA Masato, OIWA Chikara, OSAWA Katsuyuki
Принадлежит:

A pin bore is formed on a piston of the internal combustion engine, wherein the piston is connected with a connecting rod through a piston pin, and includes pin bosses through which the pin bore is formed for receiving the piston pin. The piston is casted from aluminum silicon alloy. At least the piston center side portion of the pin bore is formed from the taper hole such that the piston center side is large. Dimple process is applied on the inner surface of the pin bore, wherein the recesses by the dimple process are a lubrication oil reservoir. Also, the first phase silicon crystal in the piston matrix is minimized by the dimple process for forming the minimized layer on the inner surface of the pin bore. 1. A method for forming a pin bore on a piston of the internal combustion engine , the piston being connected with connecting rod through a piston pin , and being provided with pin bosses through which pin bore are formed for receiving the piston pin ,wherein the piston is casted from aluminum silicon alloy,at least the piston center side portion of the pin bore is formed from the taper hole, the piston center side being large,dimple process is applied on the inner surface of the pin bore, the recesses by the dimple process being a lubrication oil reservoir,further the first phase silicon crystal in the piston matrix is minimized by the dimple process for forming the minimized layer on the inner surface of the pin bore.2. A method according to claim 1 , wherein the ring engaging groove and its neighborhood are prevented from said dimple process by a mask means directly installed thereon.3. A method according to claim 1 , wherein the ring engaging groove and its neighborhood are prevented from said dimple process by a shield member having small openings smaller than the pin bore claim 1 , through said openings the spherical particles being ejected in the oblique direction.4. A method for forming a pin bore on a piston of the internal combustion engine claim 1 , ...

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Номер записи: 72
29-04-2021 дата публикации

METHOD FOR TREATING AND PHOSPHATIZING METAL BOARD WITHOUT USING ACID

Номер: US20210123113A1
Автор: KUO TSAI-MING, LIAO Kao-Hsiung, LIAO Ping-Yuan, LIAO TAI-AN
Принадлежит:

A method for treating and phosphatizing a metal board without using acid includes the following steps: performing a degreasing step to remove grease and dirt from a surface of the metal board with a degreasing agent; performing a blast-peening step by blasting and peening polygon blast-peening granules on the metal board through a centrifugal impeller to remove an oxidized layer; performing a washing step to clean remaining powders from the metal board after the blast-peening step; performing a phosphatizing step to form a protective phosphate coating on the metal board; performing another washing step to wash off remaining phosphatizing agents from the metal board; performing a rustproofing step to apply a rustproofing agent on the metal board; and performing a drying step to dry the metal board. 1. A method for treating and phosphatizing a metal board without using acid , comprising:performing a degreasing step, wherein a degreasing agent is provided to remove grease and dirt from a surface of the metal board;performing a blast-peening step by blasting and peening polygon blast-peening granules on the surface of the metal board through centrifugal impellers to remove an oxidized layer;performing a washing step to wash the surface of the metal board, so as to remove powders generated from the blast-peening step;performing a phosphatizing step to form a phosphate coating on the surface of the metal board, so as to provide protection;performing another washing step to wash off remaining phosphatizing agents from the metal board;performing a rustproofing step to apply a rustproofing agent on the metal board; andperforming a drying step to dry the metal board.2. The method according to claim 1 , wherein the blast-peening step includes providing a plurality of centrifugal impellers claim 1 , the plurality of centrifugal impellers being arranged symmetrically at an upper surface and a lower surface of the metal board claim 1 , respectively claim 1 , and symmetrically ...

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Номер записи: 73
09-06-2022 дата публикации

NEEDLE-PEENING METHOD

Номер: US20220177988A1
Автор: Shiozaki Tsuyoshi, YAMAGUCHI Naoki
Принадлежит:

A needle-peening method of peening a weld toe of a welded joint for welding and joining two pieces of sheet metal using a peening pin includes vibrating one or a plurality of the peening pins in a center axis direction; rotating the one peening pin about a single rotation axis parallel to the center axis while the center axis of the one peening pin is offset from the rotation axis, when using the one peening pin; rotating the plurality of the peening pins about the rotation axis, when using the plurality of the peening pins; and moving the one or plurality of the peening pins along the welding direction to peen the weld toe, wherein a radius of curvature of a cross section perpendicular to a welding direction at a distal end part of the peening pin is equal to or larger than 0.05 mm and smaller than 1.00 mm. 13-. (canceled)4. A needle-peening method of peening a weld toe of a welded joint for welding and joining two pieces of sheet metal by using a peening pin ,the method comprising:vibrating one or a plurality of the peening pins in a center axis direction;rotating the one peening pin about a single rotation axis parallel to the center axis while the center axis of the one peening pin is offset from the rotation axis, when using the one peening pin;rotating the plurality of the peening pins about the rotation axis, when using the plurality of the peening pins; andmoving the one or the plurality of the peening pins along the welding direction to peen the weld toe, whereina radius of curvature of a cross section perpendicular to a welding direction at a distal end part of the peening pin is equal to or larger than 0.05 mm and smaller than 1.00 mm.5. The needle-peening method according to claim 4 , wherein the plurality of the peening pins are arranged in a radial direction centered on the rotation axis.6. The needle-peening method according to claim 4 , wherein the plurality of the peening pins are arranged in a circumferential direction centered on the rotation axis ...

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Номер записи: 74
27-04-2017 дата публикации

Components made of a steel alloy and method for producing high-strength components

Номер: US20170114426A1
Автор: Uwe Diekmann
Принадлежит: Comtes Fht As, Matplus GmbH

The invention concerns a component made of a steel alloy comprising iron and as alloying element copper, in particular consisting of (in wt % in relation to the total alloy, wherein the sum of all constituents equals 100 wt %) iron≧96, carbon 0.04 to 0.12, copper 0.5 to 2.0, manganese+silicon+chromium+nickel 0.5 to 2.5, titanium 0 to 0.1, boron 0 to 0.005, and typical unavoidable impurities. In the production of semi-finished goods and of components, a combination of cold working and annealing treatment below the recrystallization temperature is used in order to thus obtain advantageous properties with regard to strength and ductility.

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Номер записи: 75
13-05-2021 дата публикации

SURFACE MATERIAL OF MOLDING SURFACE OF MOLD AND METHOD FOR SURFACE TREATMENT OF MOLDING SURFACE OF SAID MOLD

Номер: US20210138692A1
Автор: MIYASAKA Yoshio
Принадлежит:

Surface material of a mold molding surface and surface treatment method. A molding surface of material including metal and in which the molding surface reaches 50° C. or higher during molding is subjected to rapid thermal processing by injecting a substantially spherical shot with a hardness equal to or greater than the surface hardness of the mold and a size of #220 (JIS R6001-1973) or smaller at an injection pressure of 0.2 MPa or more and bombarding the surface with the shot, causing the temperature to rise locally and instantaneously at a bombarded portion to refine the surface structure of the surface and to form numerous smooth arc-shaped indentations on the entire surface of the surface. Then, powder including titanium having size of #100 or smaller is injected at an injection pressure of 0.2 MPa or more to form a coating of titanium oxide on the surface of the surface. 1. A surface material of a molding surface of a mold comprising:a micronized surface structure on at least the molding surface of the mold made from a metal, or a substance including a metal, for which the molding surface reaches 50° C. or hotter during molding;innumerable smooth circular arc shaped depressions lacking pointed protrusions formed on an entire surface of the molding surface; anda titanium oxide coating film formed on a surface of the molding surface,2. The surface material of the molding surface of wherein the metal is a metal susceptible to corrosion.3. The surface material of the molding surface of wherein the mold is a mold employed for molding a food product claim 1 , a thermoplastic resin claim 1 , a thermoset resin claim 1 , a natural rubber claim 1 , or a synthetic rubber.4. The surface material of the molding surface of wherein the mold is a mold employed for molding a resin in which the molding surface reaches from 100° C. to 400° C. during molding through contact with molten resin or the like or through heating the mold itself.5. A method for surface treatment of a ...

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Номер записи: 76
05-05-2016 дата публикации

SPRING STEEL, SPRING, AND MANUFACTURING METHOD OF SPRING

Номер: US20160122843A1
Автор: Kuno Takanori
Принадлежит:

A spring steel contains, in terms of mass %, C: 0.35% or more and 0.55% or less, Si: 1.60% or more and 3.00% or less, Mn: 0.20% or more and 1.00% or less, Cr: 0.10% or more and 1.50% or less, Ni: 0.05% or more and 0.30% or less, and Cu: 0.05% or more and 1.00% or less, and substantially does not contain V, the remainder being Fe and unavoidable impurities. 1. A spring steel containing , in terms of mass % , C: 0.35% or more and 0.55% or less , Si: 1.60% or more and 3.00% or less , Mn: 0.20% or more and 1.00% or less , Cr: 0.10% or more and 1.50% or less , Ni: 0.05% or more and 0.30% or less , and Cu: 0.05% or more and 1.00% or less , and substantially does not contain V ,the remainder being Fe and unavoidable impurities.2. The spring steel according to claim 1 , wherein Ni is 0.18% or more in terms of mass %.3. The spring steel according to claim 1 , wherein Ni is 0.18% or more and 0.25% or less in terms of mass %.4. The spring steel according to claim 1 , wherein Mn is 0.45% or more and 0.65% or less in terms of mass %.5. The spring steel according to claim 1 , wherein Cu is 0.20% or more and 0.30% or less in terms of mass %.6. The spring steel according to claim 1 , wherein Ti is 0.030% or more and 0.100% or less in terms of mass %.7. The spring steel according to claim 1 , wherein B is 0.0010% or more and 0.0050% or less in terms of mass %.8. The spring steel according to claim 1 , wherein Cu is 0.10% or more and 0.50% or less and Ni is 0.18% or more and less than 0.30% in terms of mass %.9. The spring steel according to claim 1 , wherein Cu is 0.20% or more and 0.30% or less and Ni is 0.18% or more and 0.25% or less in terms of mass %.10. A spring manufactured using the spring steel according to .11. A method for manufacturing a spring claim 1 , comprising:forming a spring steel into a shape of a spring, whereinthe spring steel comprises, in terms of mass %, C: 0.35% or more and 0.55% or less, Si: 1.60% or more and 3.00% or less, Mn: 0.20% or more and 1.00% or ...

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Номер записи: 77
04-05-2017 дата публикации

Apparatus for producing compressive residual stress in balls

Номер: US20170120418A1
Автор: Bryan McCoy, John Roth, Nathan HIPWELL, Ron Radovich
Принадлежит: SKF AB

An apparatus for imparting compressive residual stress to at least a surface portion of a first plurality of balls includes a first body having a first surface, the first surface including a smooth contact portion, the smooth contact portion being substantially flat or convex and having a surface hardness greater than or equal to the initial surface hardness of the balls. The apparatus also includes a second body having a second surface, the first surface overlying the second surface, and at least one drive operably connected to the first body or to the second body and configured to move one of the first and second bodies relative to the other body at a substantially fixed distance, the at least one drive also being configured to move the first body toward the second body with a force or to move the second body toward the first body with the force.

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Номер записи: 78
25-08-2022 дата публикации

Processing method of npr steel rebar rod

Номер: US20220266394A1
Автор: Hongchao Li, Hongyan Guo, Manchao He, Min Xia
Принадлежит: Individual

A processing method of NPR steel rebar rod is disclosed. The NPR steel rebar is cold processed and has a yield strength of 800˜950 MPa, a tensile strength of 900˜1100 MPa, and a percentage elongation at maximum force of not less than 10˜40%. The processing method comprises the following steps: a I-shaped placing step L20, an uncoiling step L30, a flattening step L40, a butt welding step L50, a sandblasting step L60, a straightening step L70, a pointing step L80, a hydraulic head-pushing step L90, a cold drawn spiral ribbing step L10, a straight forward continuous wire drawing and traction step L11, a pre-straightening step L12, a fine straightening step L13, and a cutting-off step L14. The processing method can meet the automatic intelligent production requirements of NPR steel rebar, cold rolled spiral NPR steel rebar, and pre-stressed NPR steel rebar.

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Номер записи: 79
25-08-2022 дата публикации

Method for Marking Workpieces and Workpiece

Номер: US20220266617A1
Автор: Hãrtling Thomas, Heymann Manuela, Mai Björn Erik, Zeh Christoph
Принадлежит:

In an embodiment a method includes providing a workpiece, attaching a marking to the workpiece such that the marking is integrally bonded to the workpiece, wherein attaching the marking includes applying at least one raw material for the marking, heating the workpiece with the at least one raw material such that the marking is formed from the at least one raw material and performing a surface treatment of the workpiece at least in an area with the marking, wherein performing the surface treatment includes shot peening, sand blasting or material-removing etching against which the marking is resistant to, wherein the marking remains readable on the workpiece at least until after performing the surface treatment, and wherein the marking has, in at least a part of a near ultraviolet, a visible and/or a near-infrared spectral range relative to the workpiece, at least one of a degree of reflection difference, a reflectance difference or an albedo difference of at least 10 percentage points. 114.-. (canceled)15. A method comprising:providing a workpiece;attaching a marking to the workpiece such that the marking is integrally bonded to the workpiece, wherein attaching comprises applying at least one raw material for the marking;heating the workpiece with the at least one raw material such that the marking is formed from the at least one raw material; andperforming a surface treatment of the workpiece at least in an area with the marking,wherein performing the surface treatment comprises shot peening, sand blasting or material-removing etching against which the marking is resistant to,wherein the marking remains readable on the workpiece at least until after performing the surface treatment,wherein the marking has, in at least a part of a near ultraviolet, a visible and/or a near-infrared spectral range relative to the workpiece, at least one of a degree of reflection difference, a reflectance difference or an albedo difference of at least 10 percentage points,wherein the ...

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Номер записи: 80
16-04-2020 дата публикации

ALLOY STEEL IN WHICH CARBURIZATION IS PREVENTED BY PROCESSING LOAD AND METHOD OF MANUFACTURING THE SAME

Номер: US20200115787A1
Автор: Hwang Jae-Yoon, Kang Min-Woo, Kim Hyun-Kyu, Park Jae-Hong
Принадлежит:

Provided herein is an alloy steel in which carburization is prevented by a processing load, the alloy steel including: about 0.13 to 0.25 wt % of carbon (C), about 0.6 to 1.5 wt % of silicon (Si), about 0.6 to 1.5 wt % of manganese (Mn), about 1.5 to 3.0 wt % of chromium (Cr), about 0.01 to 0.1 wt % of niobium (Nb), about 0.01 to 0.1 wt % of aluminum (Al), about 0.05 to 0.5 wt % of vanadium (V), the balance iron (F), and impurities, based on the total weight of the alloy steel. 1. An alloy steel in which carburization is prevented by a processing load , the alloy steel comprising:about 0.13 to 0.25 wt % of carbon (C),about 0.6 to 1.5 wt % of silicon (Si),about 0.6 to 1.5 wt % of manganese (Mn),about 1.5 to 3.0 wt % of chromium (Cr),about 0.01 to 0.1 wt % of niobium (Nb),about 0.01 to 0.1 wt % of aluminum (Al),about 0.05 to 0.5 wt % of vanadium (V), 'impurities,', 'the balance iron (F), and'}based on the total weight of the alloy steel.2. The alloy steel of claim 1 , wherein X is a value calculated by the following Equation 1:{'br': None, 'X=wt % of Si+wt % of ½×Mn+wt % of 2×Cr\u2003\u2003[Equation 1]'}wherein the value of X is 4.9 to 6.5 wt %.3. The alloy steel of claim 1 , wherein a surface of the alloy steel comprises an oxide film formed by a processing load.4. The alloy steel of claim 1 , wherein the surface structure of the alloy steel comprises a low-carbon martensite structure.5. The alloy steel of claim 4 , wherein the surface structure comprises about 0.4 wt % or less of carbon.617-. (canceled) The present application claims priority to Korean Patent Application No. 10-2017-0001881, filed on Jan. 5, 2017, the entire contents of which is incorporated herein for all purposes by this reference.The present invention relates to an alloy steel in which carburization is prevented, and more particularly, to an alloy steel in which carburization is prevented by a processing load and a method of manufacturing the same, which are capable of solving a brittleness ...

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Номер записи: 81
31-07-2014 дата публикации

System and Method for Improving a Workpiece

Номер: US20140208861A1
Автор: David Bockmiller, Ron Woods, Ryan T. Ehinger
Принадлежит: BELL HELICOPTER TEXTRON INC

A method of modifying a workpiece includes providing a workpiece, determining a load stress profile associated with a load condition, the load stress profile comprising a load stress greater than a material stress limit of the workpiece, determining a residual stress profile, the residual stress profile comprising a residual stress less than the material stress limit of the workpiece, and providing the workpiece with the residual stress profile, wherein a sum of the load stress and the residual stress is less than the material stress limit of the workpiece.

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Номер записи: 82
12-05-2016 дата публикации

Post Machining Multi-Step Material Working Treatment of Fluid End Housing

Номер: US20160130679A1
Автор: George H. Blume, William J. Cober
Принадлежит: Individual

A method for post machining treatment of the interior surfaces of the access, suction, and discharge bores within each fluid chamber of the fluid end housing of a plunger pump that includes a three (3) step cold and hot working process. The treatment processes include a first shot peening of selected sections of said interior surfaces of each fluid chamber; a quench-polish-quench process whereby an anticorrosion nitride surface layer is added to the interior surfaces of each fluid chamber; and a second shot peening of the selected sections of the interior surfaces of each fluid chamber.

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Номер записи: 83
10-05-2018 дата публикации

MARTENSITIC STAINLESS STEEL, METHOD FOR THE PRODUCTION OF A SEMI-FINISHED PRODUCT FROM SAID STEEL, AND CUTTING TOOL PRODUCED FROM THE SEMI-FINISHED PRODUCT

Номер: US20180127858A1
Автор: Chassagne Francis, Haegeli Françoise
Принадлежит:

Martensitic stainless steel, characterized in that its composition consists of, in percentages by weight: 0.10%≤C≤0.45%; traces≤Mn≤1.0%; traces≤Si≤1.0%; traces≤S≤0.01%; traces≤P≤0.04%; 15.0%≤Cr≤18.%; traces≤Ni≤0.50%; traces≤Mo≤0.50%; traces≤Cu≤0.50%; traces≤V≤0.50%; traces≤Nb≤0.03%; traces≤Ti≤0.03%; traces≤Zr≤0.03%; traces≤Al≤0.010%; traces≤O≤0.0080%; traces≤Pb≤0.02%; traces≤Bi≤0.02%; traces≤Sn≤0.02%; 0.10%≤N≤0.20%; C+N≥0.25%; Cr+16N−5C≥16.0%; preferably 17Cr+500C+500N≤570%; 19-. (canceled)10. A martensitic stainless steel , characterized in that its composition consists of , in weight percentages:0.10%≤C≤0.45%;traces≤Mn≤1.0%;traces≤Si≤1.0%;traces≤S≤0.01%;traces≤P≤0.04%;15.0%≤Cr≤18.0%;traces≤Ni≤0.50%;traces≤Mo≤0.50%;traces≤Cu≤0.50%;traces≤V≤0.50%;traces≤Nb≤0.03%;traces≤Ti≤0.03%;traces≤Zr≤0.03%;traces≤Al≤0.010%;traces≤O≤0.0080%;traces≤Pb≤0.02%;traces≤Bi≤0.02%;traces≤Sn≤0.02%;0.10%≤N≤0.20%;C+N≥0.25%;Cr+16N−5C≥16.0%;the rest being iron and impurities resulting from the melting.11. The steel according to claim 10 , wherein its microstructure includes at least 75% martensite.12. The steel according to claim 10 , wherein 0.20%≤C≤0.38%.13. The steel according to claim 12 , wherein 0.20%≤C≤0.35%.14. The steel according to claim 12 , wherein 0.30%≤C≤0.35%.15. The steel according to claim 10 , wherein traces≤Mn≤0.6%.16. The steel according to claim 10 , wherein traces≤S≤0.005%.17. The steel according to claim 10 , wherein 15.0%≤Cr≤17.0%.18. The steel according to claim 17 , wherein 15.2%≤Cr≤17.0%.19. The steel according to claim 18 , wherein 15.5%≤Cr≤16.0%20. The steel according to claim 10 , wherein traces≤Mo≤0.01%.21. The steel according to claim 20 , wherein traces≤Mo≤0.05%.22. The steel according to claim 10 , wherein traces≤Cu≤0.3%.23. The steel according to claim 10 , wherein traces≤V≤0.2%.24. The steel according to claim 10 , wherein 0.15%≤N≤0.20%.25. The steel according to claim 10 , wherein C+N≥0.30%.26. The steel according to claim 25 , wherein C+N≥0.45%.27. The ...

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Номер записи: 84
21-05-2015 дата публикации

Deformation correcting device

Номер: US20150137433A1
Автор: Kunio Kamo
Принадлежит: NTN Corp

A deformation correcting device to correct a deformation occurring in a ring shaped article, which has been heated, while the heated ring shaped article is cooled, includes a support table, on which the ring shaped article in a heated condition is placed; a pair of receiving rolls; a press roll provided in opposition to the pair of the receiving rolls with the ring shaped article intervening therebetween; a press roll drive mechanism for driving the press roll between an advanced position, at which the press roll is urged against the outer peripheral surface of the ring shaped article, and a retracted position, at which the press roll is separated away from the outer peripheral surface of the ring shaped article; and a press roll rotating mechanism for rotating the press roll then urged against the ring shaped article by the press roll drive mechanism.

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Номер записи: 85
02-05-2019 дата публикации

METHOD OF MANUFACTURING A SUSPENSION COIL SPRING

Номер: US20190126706A1
Автор: OKADA Hideki, TANGE Akira
Принадлежит: NHK SPRING CO., LTD.

A method of manufacturing a suspension coil spring includes forming first shot peening indentations on a surface of a wire by projecting first shots toward the wire and forming a compressive residual stress portion to which a compressive residual stress is imparted from the surface of the wire to a first depth, and projecting ball shots as second shots toward a lower end turn portion by an ultrasonic apparatus. A size of each ball shot is larger than a size of each first shot. The method includes forming second shot peening indentations on a surface of the lower end turn portion, and a deep residual stress portion in the lower end turn portion, a compressive residual stress of the deep residual stress portion imparted from the surface of the wire to a second depth that is deeper than the first depth. 1. A method of manufacturing a suspension coil spring , the suspension coil spring including a lower end turn portion which is less than one turn from a lower end of a wire formed into a helical shape , and an upper end turn portion which is less than one turn from an upper end of the wire , the method comprising:a primary shot peening step comprising forming first shot peening indentations on a surface of the wire by projecting first shots toward the wire and forming a compressive residual stress portion to which a compressive residual stress is imparted from the surface of the wire to a first depth; and projecting ball shots as second shots toward the lower end turn portion by an ultrasonic apparatus, wherein a size of each of the ball shots is larger than a size of each of the first shots, and', 'forming, by the projection of the ball shots, second shot peening indentations on a surface of the lower end turn portion, and a deep residual stress portion in the lower end turn portion, a compressive residual stress of the deep residual stress portion being imparted from the surface of the wire to a second depth that is deeper than the first depth., 'an ultrasonic shot ...

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Номер записи: 86
23-04-2020 дата публикации

DEVICE AND METHOD FOR TREATING A METAL PART

Номер: US20200122296A1
Автор: BESSON Laurianne, DANG Nathalie, MORANCAIS Amélie, SOK Christian
Принадлежит:

A device for treating a metal part having an outer surface, includes a chamber, a vibration module including: a generator for generating an electric signal at ultrasonic frequency, a converter for converting the electric signal into a mechanical vibration, the mechanical vibration being transmitted to a sonotrode, the sonotrode positioned in the chamber facing the outer surface of the metal part, projectiles positioned inside the chamber for impacting against the outer surface of the metal part, the projectiles being moved by the vibration of the sonotrode and including a plurality of abrasive media which, when moved by the vibration of the sonotrode, introduce residual compressive stresses and improve the surface condition of the metal part. 2. The device for treating a metal part according to claim 1 , further comprising a suction system sucking up residues of the metal part and residues of projectiles derived from the impact of said projectiles with each other and on the outer surface of the metal part.3. The device for treating a metal part according to claim 2 , further comprising a filter only allowing the passage of residues of the metal part and residues of projectiles from the enclosure to the suction system.4. The device for treating a metal part according to claim 1 , wherein the abrasive media have a thickness comprised in the interval [0.8 mm claim 1 , 10 mm] claim 1 ,5. The device for treating a metal part according to claim 1 , wherein at least one abrasive medium of the plurality of abrasive media comprises a base made of one of the following materials:plastic,ceramic,organic.6. The device for treating a metal part according to claim 1 , wherein at least one abrasive medium of the plurality of abrasive media comprises an abrasive charge having a hardness comprised in the interval [8 Mohs claim 1 , 10 Mohs].7. The device for treating a metal part according to claim 6 , wherein the abrasive charge is constituted of at least one of the following ...

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Номер записи: 87
19-05-2016 дата публикации

LASER PROCESSING APPARATUS AND LASER PROCESSING METHOD

Номер: US20160138127A1
Автор: CHIDA ltaru, ICHIKAWA Hiroya, NOMURA Kota, SHIIHARA Katsunori
Принадлежит: KABUSHIKI KAISHA TOSHIBA

One embodiment of the laser processing apparatus is for surface treatment by supplying liquid to a surface of the target member and irradiating pulsed laser light to the surface of the target member via the liquid. The apparatus includes a laser oscillator and a liquid supply. The laser oscillator irradiates the laser light to the surface through the liquid via an optical window. The liquid supply is configured to supply the liquid to the surface of the target member via a flow path passing on an outer surface of the optical window. When the liquid is in contact with a laser light emission surface of the optical window, the laser light emission surface transmits the laser light. When the liquid is not in contact with the laser light emission surface, the laser light emission surface reflects the laser light. 1. A laser processing apparatus for surface treatment of a target member by supplying liquid to a surface of the target member and irradiating pulsed laser light to the surface via the liquid , the apparatus comprising:a laser oscillator configured to irradiate the laser light to the surface through the liquid via an optical window; anda liquid supply configured to supply the liquid to the surface via a flow path passing on an outer surface of the optical window, whereinwhen the liquid is in contact with a laser light emission surface of the optical window, the laser light emission surface transmits the laser light, andwhen the liquid is not in contact with the laser light emission surface, the laser light emission surface reflects the laser light.2. The laser processing apparatus according to claim 1 , further comprising a beam dump to which the laser light reflected by the laser light emission surface is guided.3. The laser processing apparatus according to claim 2 , wherein the beam dump is constituted by an energy detector configured to measure energy of the laser light.4. The laser processing apparatus according to claim 1 , further comprising:a laser light ...

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Номер записи: 88
17-05-2018 дата публикации

METHOD OF REVERSING SURFACE STRESS ON A COATED COMPONENT

Номер: US20180133851A1
Автор: CHOI Jinkyu
Принадлежит:

A method of reversing stresses in a component includes cold working a substrate creating a first stress level in the component; and applying a material to the substrate after cold working, the material inducing a second stress level that cancels the first stress level. 1. A method of reversing stresses in a component comprising:cold working a substrate creating a first stress level in the component; andapplying a material to the substrate after cold working, the material inducing a second stress level that cancels the first stress level.2. The method of claim 1 , wherein cold working the substrate includes surface peening the substrate.3. The method of claim 2 , wherein peening the substrate comprises one of a glass bead peening process claim 2 , a laser peening process claim 2 , and a cavitation peening process.4. The method of claim 1 , wherein applying the material creates a thermal gradient between the substrate and the material.5. The method of claim 4 , wherein applying the material to the substrate includes at least one of a cold spray deposition (CSD) process claim 4 , and a thermal spray process.6. The method of claim 1 , wherein applying material to the substrate comprises an additive manufacturing process.7. The method of claim 1 , further comprising: removing a portion of the substrate to form a repair zone.8. The method of claim 7 , wherein cold working the substrate includes cold working the repair zone.9. The method of claim 8 , wherein applying the material to the substrate includes replacing the portion of the material at the repair zone.10. The method of claim 9 , wherein replacing the portion of the material includes one of a cold spray deposition process and a thermal spray process.11. A gearbox housing formed by the method of .12. A gearbox housing repaired by the method of .13. An airframe component formed by the method of .14. An airframe component repaired by the method of . This US non-provisional application claims priority to U.S. Ser. No. ...

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Номер записи: 89
28-05-2015 дата публикации

Plastic working method of metals and plastic working apparatus

Номер: US20150143861A1
Автор: Koichi Sato, Masaaki Mizumura, Masahiro Kubo, Tohru Yoshida
Принадлежит: Nippon Steel and Sumitomo Metal Corp

Provided is a plastic working method of steel including austenite, the method including: analyzing a strain ratio βx of an estimated breaking point which is specified during plastic deformation of the steel; heating a steel such that a local temperature T local is within a temperature range indicated by the following expression 1, when T βx represents a strain-induced-transformation-maximum-ductility-temperature in the unit of ° C. for the strain ratio βx, σL βx represents the standard deviation of a fitted curve of critical equivalent strain which depends on the strain ratio βx on a lower temperature side than T βx , σH βx represents the standard deviation of a fitted curve of critical equivalent strain which depends on the strain ratio βx on a higher temperature side than T βx , and T local represents a local temperature in the unit of ° C. of the estimated breaking point; and plastically deforming the steel after heating: T βx −2×σ L βx ≦T local ≦T βx +1.25×σ H βx   (Expression 1).

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Номер записи: 90
08-09-2022 дата публикации

Shot peening method

Номер: US20220281071A1
Автор: Yuji Kobayashi
Принадлежит: Sintokogio Ltd

A shot peening method includes performing first shot peening for applying residual stress to a surface of an object formed of a metal material at a first depth, and performing second shot peening for applying residual stress to the surface of the object at a second depth deeper than the first depth after the first shot peening.

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Номер записи: 91
09-05-2019 дата публикации

Copper-nickel-tin alloy, method for the production and use thereof

Номер: US20190136357A1
Автор: Kai Weber
Принадлежит: Wieland Werke AG

The invention relates to a high-strength copper-nickel-tin alloy with excellent castability, hot workability and cold workability, high resistance to abrasive wear, adhesive wear and fretting wear and improved resistance to corrosion and stress relaxation stability, consisting of (in weight %): 2.0-10.0% Ni, 2.0-10.0% Sn, 0.01-1.0% Fe, 0.01-0.8% Mg, 0.01-2.5% Zn, 0.01-1.5% Si, 0.002-0.45% B, 0.004-0.3% P, selectively up to a maximum of 2.0% Co, selectively up to a maximum of 0.25% Pb, the residue being copper and unavoidable impurities, characterised in that—the ratio Si/B of the element contents in wt. % of the elements silicon and boron is a minimum 0.4 and a maximum 8; such that the copper-nickel-tin alloy has Si-containing and B-containing phases and phases of the systems Ni—Si—B, Ni—B, Fe—B, Ni—P, Fe—P, Mg—P, Ni—Si, Mg—Si and other Fe-containing phases and Mg-containing phases which significantly improve the processing properties and use properties of the alloy. The invention also relates to a casting variant and a further-processed variant of the high-strength copper-nickel-tin alloy, to a production method, and to the use of the alloy.

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Номер записи: 92
26-05-2016 дата публикации

TITANIUM ALUMINIDE APPLICATION PROCESS AND ARTICLE WITH TITANIUM ALUMINIDE SURFACE

Номер: US20160145728A1
Автор: AMANCHERLA Sundar, Anand Krishnamurthy, CALLA Eklayva, Schaeffer Jon Conrad
Принадлежит: GENERAL ELECTRIC COMPANY

A titanium aluminide application process and article with a titanium aluminide surface are disclosed. The process includes cold spraying titanium aluminide onto an article within a treatment region to form a titanium aluminide surface. The titanium aluminide surface includes a refined gamma/alpha2 structure and/or the titanium aluminide is cold sprayed from a solid feedstock of a pre-alloyed powder. 1. A turbine component , comprising a substrate and a titanium aluminide surface layer bonded to the substrate , the titanium aluminide surface layer of the turbine component including a gamma/alpha2 structure having a grain size of between about 5 nanometers and about 100 microns , wherein the titanium aluminide surface layer is formed from a solid feedstock and retains phases and microstructures present in the solid feedstock.2. The turbine component of claim 1 , wherein the titanium aluminide surface layer has no equiaxed grains.3. The turbine component of claim 1 , wherein the titanium aluminide surface layer is devoid of duplex structure.4. The turbine component of claim 1 , wherein the titanium aluminide surface layer is devoid of polycrystalline lamellar structure.5. The turbine component of claim 1 , wherein the titanium aluminide surface layer has anisotropy.6. The turbine component of claim 1 , wherein the titanium aluminide surface layer is within a cold spray treatment region.7. The turbine component of claim 1 , wherein the titanium aluminide surface layer has a composition claim 1 , by weight claim 1 , including about 45% titanium and about 50% aluminum.8. The turbine component of claim 1 , wherein the titanium aluminide surface layer has a composition including AlTi.9. The turbine component of claim 1 , wherein the titanium aluminide surface layer has a composition including AlTi.10. The turbine component of claim 1 , wherein the titanium aluminide surface layer is directly bonded to the substrate.11. A turbine component claim 1 , comprising a substrate ...

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Номер записи: 93
04-06-2015 дата публикации

Shot peening method

Номер: US20150151404A1
Автор: Akinori Matsui, Yuji Kobayashi
Принадлежит: Sintokogio Ltd

First, it is determined in a determination step by a determination unit whether there is a nitrided layer on a surface of a water-cooled hole of a mold, by using an eddy current sensor. Next, in a shot step, when it is determined in the determination step that there is no nitrided layer, the surface of the water-cooled hole of the mold is shot-peened under a shot condition set according to a base material of the mold, and when it is determined in the determination step that there is the nitrided layer, the surface of the water-cooled hole of the mold is shot-peened under a shot condition which maintains a state where there is the nitrided layer.

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Номер записи: 94
04-06-2015 дата публикации

Methods And Apparatus For Stress Relief Using Multiple Energy Sources

Номер: US20150152515A1
Автор: Walker Donna Murray
Принадлежит:

Methods are presented for modifying a physical property of a structure, such as reducing or relieving remaining internal stress, in which two or more energy types are concurrently applied to the structure to change the physical property of interest in an accelerated fashion. A first energy type, such as heat, is applied according to time values and operational settings derived from a first order rate relationship for the first energy type and from a first order rate relationship for a second energy type. The second energy type, such as vibration or other time-varying energy form, is applied concurrently for the time value. Methods are also provided for determining operational settings for concurrent application of multiple energy types to a structure. 132-. (canceled)33. A method for changing a physical property of a metal or metallic alloy manufactured part , comprising:performing a first energy process by providing a first energy to the manufactured part, according to a first operational setting;performing a second energy process by providing a second energy to the manufactured part, according to a second operational setting;wherein the first and second energy processes are performed concurrently to provide energy above an activation energy for the material of the manufactured part; andwherein at least one of the first or second operational settings and the time value are selected according to a desired value of the physical property and according to a first order rate relationship that relates concurrent application of the first and second energy to the manufactured part and the physical property of the manufactured part,whereby a temporal acceleration of the change in the desired value of the physical property occurs.34. The method of claim 33 , wherein the first energy is a heat energy that is provided to the manufactured part at or below a temperature to avoid melting the manufactured part.35. The method of claim 33 , wherein the second energy is oscillatory. ...

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Номер записи: 95
02-06-2016 дата публикации

Hot-rolled steel sheet having excellent workability and anti-aging properties and method for manufacturing same

Номер: US20160153064A1
Автор: Jai-lk KIM, Jong-Hwa Kim
Принадлежит: Posco Co Ltd

The present invention relates to a hot-rolled steel sheet applied as a material for home appliances, vehicles, or the like and, more specifically, to a hot-rolled steel sheet having excellent workability and anti-aging properties and a method for manufacturing the same. To this end, the present invention uses ultra-low carbon Al-killed steel so as to optimize the alloying elements thereof and the manufacturing conditions, thereby providing hot-rolled steel sheets having both excellent workability and anti-aging properties.

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Номер записи: 96
16-05-2019 дата публикации

PEENING POSITION CONTROL DEVICE OF ULTRASOUND INNER WALL PEENING SYSTEM

Номер: US20190143471A1
Автор: JUNG Sunghwan
Принадлежит: Industry-Academic Cooperation Foundation, Dankook University

A peening position control apparatus, includes: an ultrasonic wave generation unit generating ultrasonic waves; an ultrasonic wave radiation unit disposed to contact the ultrasonic wave generation unit, the ultrasonic wave radiation unit receiving an ultrasonic medium transmitting the ultrasonic waves therethrough; and an insert member configured to be inserted into a treatment object disposed inside the ultrasonic wave radiation unit. 1. A peening position control apparatus , comprising:an ultrasonic wave generation unit generating ultrasonic waves;an ultrasonic wave radiation unit disposed to contact the ultrasonic wave generation unit, the ultrasonic wave radiation unit receiving an ultrasonic medium transmitting the ultrasonic waves therethrough; andan insert member configured to be inserted into a treatment object disposed inside the ultrasonic wave radiation unit,wherein the insert member is inserted into the treatment object from one side of the treatment object; the ultrasonic waves generated by the ultrasonic wave generation unit are transmitted through the ultrasonic medium from the other side of the treatment object; the ultrasonic waves transmitted through the ultrasonic medium are reflected from a surface of the insert member located inside the treatment object to be converted into a standing wave inside the ultrasonic medium such that an inner wall of the treatment object is peened by the standing wave; and peening points on the inner wall of the treatment object are adjusted according to a degree of insertion of the insert member.2. The peening position control apparatus according to claim 1 , wherein the peening points correspond to pressure antinodes of the standing wave.3. The peening position control apparatus according to claim 2 , wherein the inner wall of the treatment object is peened by cavitation at points corresponding to the pressure antinodes.4. The peening position control apparatus according to claim 1 , wherein the surface of the ...

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Номер записи: 97
17-06-2021 дата публикации

METHOD AND APPARATUS FOR MANUFACTURING A PART USING SUCCESSIVE DEPOSITION OF LAYERS

Номер: US20210178485A1
Автор: BADREDDINE Jawad, Comu Daniel, Dessoly Vincent
Принадлежит: SAFRAN

A method for manufacturing at least one portion of a part using successive deposition of layers, involving the steps of: a) depositing a first layer of a molten metal on a substrate such that a first metal strip is formed on the substrate; b) depositing a second layer of a molten metal on the first strip such that a second metal strip is formed on the first strip; and c) repeating steps a) and then b) for each new metal layer to be deposited on a preceding strip until the at least one portion of the part has been formed. The method may further include step d) compressing the formed bead after performing n instances of step c), n being greater than or equal to 1. The step of compressing the formed bead may be performed before the complete cooling of said bead. 1. A method for manufacturing at least a portion of a part by successive depositions of layers , comprising the following steps:a) depositing a first layer of molten metal on a substrate, so as to form a first metallic bead on the substrate,b) depositing a second layer of molten metal on said first bead, so as to form a second metallic bead on said first bead, andc) repeating steps a) and then b) for each new metallic layer to be deposited on top of the previous bead, until the formation of said at least one portion of the part,d) compressing, after performing n instances of step c), n being greater than or equal to 1, the formed bead, wherein the step of compressing the formed bead is performed before the complete cooling of said bead.2. The method of claim 1 , wherein the step of compressing the formed bead is performed when the material of said bead is at a temperature of more than 30° C.3. The method of claim 1 , wherein the step of compressing the formed bead is performed by projecting a flow of gas onto said bead.4. The method aof claim 1 , wherein the step of compressing the formed bead is performed by shot peening said bead.5. The method of claim 4 , wherein shot peening is performed with particles of a ...

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Номер записи: 98
08-06-2017 дата публикации

Hot clamping method and clamping cooling apparatus

Номер: US20170157698A1
Автор: Young Hoon JANG
Принадлежит: Hyundai Motor Co

A hot clamping method includes: blanking to cut a material; cold-working to cool down the cut material to produce a product having a shape of a completed product; heating the cooled product in a heating furnace; and clamping cooling to set the heated product in a clamp to clamp it so that it is in contact with the clamp to be cooled down.

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Номер записи: 99
08-06-2017 дата публикации

DEEP ROLLING TOOL FOR BLADE FATIGUE LIFE ENHANCEMENT

Номер: US20170157736A1
Автор: Gray Eric D., Hawkes Justin R., Kountanya Raja, Liou Joe J., Zadrozny Gary Paul
Принадлежит:

A device and methods are provided for deep rolling. In one embodiment, a deep rolling tool for applying compressive stress with rolling elements includes a fork having a base section and a plurality of fork arms, each fork arm extends outwardly from the base section and the fork arms are separated from one another to form an opening. The deep rolling tool may also include rolling elements, wherein each rolling element is mounted at the distal end of a fork arm, and the rolling elements are configured to apply a compressive stress to articles received by the deep rolling tool. 1. A deep rolling tool for applying compressive stress , the deep rolling tool comprising:a first fork arm and a second fork arm each extending outwardly from a base section, wherein the first fork arm and the second fork arm are separated from one another to form an opening;a first rolling element rotatably secured to a distal end of the first fork arm;a second rolling element rotatably secured to a distal end of the second fork arm;wherein the first fork arm and the second fork arm are configured to locate the first rolling element and the second rolling element in a facing spaced relationship with respect to each other; andwherein the first rolling element and the second rolling element are configured to apply a compressive stress to an article received in the opening, wherein the first rolling element and the second rolling element each have a crowned roller, the crowned roller having a minor radius for contacting the article received by the rolling tool, and a major diameter adapted to provide a load capacity.2. The deep rolling tool of claim 1 , wherein the deep rolling tool is configured to apply residual stress to the article and the article is at least one of a turbine blade claim 1 , a compressor blade claim 1 , a fan blade claim 1 , a bladed disk claim 1 , a bladed element and a metal object.3. The deep rolling tool of claim 1 , wherein the compressive stress improves at least one of ...

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Номер записи: 100