公开(公告)号：US11473158B2

公开(公告)日：2022-10-18

申请号：US16808975

申请日：2020-03-04

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Yu Takanezawa ,  Osamu Yamashita

IPC分类号： C21D1/34 ,  C22C45/00

摘要： A method for manufacturing a nanocrystalline alloy ribbon piece with high productivity is provided. The method according to the present disclosure is a method for manufacturing an alloy ribbon piece obtained by crystallizing an amorphous alloy ribbon piece, and includes: preparing the amorphous alloy ribbon piece; sequentially heating the ribbon piece from one end to an intermediate position toward another end to a temperature range equal to or more than a crystallization starting temperature, and stopping the heating when heating the ribbon piece up to the intermediate position; and sequentially heating the ribbon piece from the other end to a position immediately before the intermediate position to the temperature range. In the sequentially heating the ribbon piece from the other end, the ribbon piece is heated up to the position immediately before the intermediate position after the heating is stopped in sequentially heating the ribbon piece from the one end.

公开(公告)号：US11318561B1

公开(公告)日：2022-05-03

申请号：US16006917

申请日：2018-06-13

申请人： Government of the United States, as Represented by the Secretary of the Air Force

发明人： Steven B Fairchild ,  Daniel P Gortat ,  William O'Neill ,  Martin R Sparkes

IPC分类号： B23K26/354 ,  C21D1/34 ,  C22F1/00

摘要： A method for reducing outgassing from a metal surface comprises applying energy from an energy source to the metal surface sufficient to melt the metal surface; and allowing the metal surface to re-solidify, wherein the re-solidified metal surface comprises larger grains and fewer grain boundaries, reducing outgassing sites for a trapped gas. Applying energy from an energy source is performed in a raster scan pattern. Adjacent passes in the raster scan pattern overlap sufficiently to melt the entire metal surface. The energy source is a laser, such as a CW Yb fiber laser. A spot size and applied energy of the laser energy source applied to the metal surface is sufficient to melt the entire metal surface (appropriate for the absorption and reflection characteristics of the treated material). The application of energy from an energy source releases at least some of a gas trapped in the metal. The trapped gas is atomic hydrogen. The metal surface comprises an electrode of a high power system device. The metal surface is in one of a high-vacuum environment and a vacuum electronic device. The metal surface comprises at least one of steel, stainless steel, nickel, and copper.

公开(公告)号：US11248276B2

公开(公告)日：2022-02-15

申请号：US16611880

申请日：2018-12-27

申请人： IRONOVATION MATERIALS TECHNOLOGY CO., LTD.

发明人： Hongliang Yi ,  Zhiyuan Chang ,  Zhaoyuan Liu ,  Dapeng Yang ,  Xiaochuan Xiong

IPC分类号： C21D9/46 ,  B21D22/02 ,  B32B15/01 ,  C21D1/34 ,  C21D6/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28 ,  C22C38/32

摘要： The present invention relates to a hot stamped component, a precoated steel sheet used for hot stamping, and a hot stamping process. The hot stamped component of the present invention is provided with a coating of aluminium or an aluminium alloy on at least one surface of the base steel, the coating is produced by interdiffusion between the base steel and a precoating of aluminium or aluminium alloy, and the coating has a thickness of 6 to 26 μm.

公开(公告)号：US20220033928A1

公开(公告)日：2022-02-03

申请号：US17506076

申请日：2021-10-20

申请人： JFE Steel Corporation

发明人： Goki Yamada ,  Yoshimitsu Harada ,  Takahiro Takatsu ,  Yukihiro Matsubara ,  Yuta Tamura

IPC分类号： C21D9/46 ,  C22C38/02 ,  C21D1/34 ,  C21D8/12 ,  C23G1/08 ,  C21D9/60 ,  C22C38/00 ,  C21D1/82 ,  C21D9/62 ,  C21D9/00

摘要： Provided is a hot-band annealing method comprising subjecting a Si-containing hot rolled steel sheet, having an oxidized scale formed on a surface of the steel sheet by hot rolling, to hot-band annealing with a hot-band annealing equipment provided with a heating zone, a soaking zone, a cooling zone, and a rapid heating device at an upstream side of the heating zone and/or in an inlet side of the heating zone, wherein the hot rolled steel sheet is heated by not lower than 50° C. at a heating rate of not less than 15° C./s by using the rapid heating device to improve a descaling property. Also, provided is a descaling method characterized by subjecting the Si-containing hot rolled steel sheet, after the hot-band annealing, to descaling only by pickling without requiring mechanical descaling or heating the steel sheet in the pickling process.

公开(公告)号：US20220016683A1

公开(公告)日：2022-01-20

申请号：US17296883

申请日：2019-08-08

申请人： POSCO

发明人： Youn-Hee Kang ,  Ki Soo Kim ,  Chang Ho Moon ,  Gil-Ho Song ,  Jong Youn Park ,  Eun-Ho Lee

IPC分类号： B21D5/00 ,  B21D37/16 ,  C21D1/34 ,  C21D11/00

摘要： The present disclosure relates to a local heat treatment system and a cold forming method using the same. The local heat treatment system includes a heating device configured to locally heat only a plastic deformation occurrence portion of a blank material to a predetermined temperature, a moving device configured to move the heating device to a position of a local heating region of the blank material, and a controller configured to control the heating device and the moving device.

公开(公告)号：US11219937B2

公开(公告)日：2022-01-11

申请号：US16099411

申请日：2017-08-08

申请人： AUTOTECH ENGINEERING S.L.

发明人： Manuel Lopez Lage ,  Jordi Castilla Moreno ,  Daniel Merino Fernandez ,  Oliver Straube

IPC分类号： B21D22/02 ,  C21D9/46 ,  C21D1/18 ,  B21D37/16 ,  C21D1/34 ,  C21D9/00 ,  C21D1/673

摘要： Centering systems for centering blanks outputted from a furnace in a hot stamping line are provided, the centering system comprising a centering table and a heating system for heating one or more selected zones of the blank while arranged on the centering table. Also provided are methods for manufacturing steel components having hard zones and soft zones, wherein the soft zones are of less mechanical strength than the hard zones. The methods comprise heating a steel blank in a furnace, centering the heated blank on a centering table arranged downstream from the furnace, heating one or more selected zones of the heated blank while the blank is on the centering table, wherein the selected zones are the zones of the blank which are destined to form the hard zones; transferring the blank to a press tool to hot forming the blank, and quenching the selected zones of the blank destined to form the hard zones.

公开(公告)号：US11135674B2

公开(公告)日：2021-10-05

申请号：US16313785

申请日：2017-06-26

申请人： KAWASAKI JUKOGYO KABUSHIKI KAISHA

发明人： Ryoji Ohashi ,  Yoshitaka Muramatsu ,  Masahiro Miyake ,  Takuya Fukuda

IPC分类号： B23K20/00 ,  B23K20/12 ,  C21D1/18 ,  C21D1/34 ,  C21D9/50

摘要： A method of performing friction stir spot welding of a plurality of steel plates, includes the steps of: friction stirring a spot welding portion of the plurality of steel plates by pressing a tool against the spot welding portion while rotating the tool, to plasticize the spot welding portion by friction heat; cooling the spot welding portion to cause martensitic transformation to occur in the spot welding portion, after the step of friction stirring the spot welding portion; and tempering the spot welding portion by the friction heat by re-pressing the tool against the spot welding portion while rotating the tool, after the step of cooling the spot welding portion.

公开(公告)号：US11066715B2

公开(公告)日：2021-07-20

申请号：US16086705

申请日：2017-03-06

申请人： Mitsubishi Hitachi Power Systems, Ltd.

发明人： Yuichi Shimizu ,  Tatsuya Furukawa ,  Ryuichi Matsubara ,  Kenji Sato

IPC分类号： C21D3/06 ,  C21D9/00 ,  F01D25/10 ,  F01D9/02 ,  F01K21/06 ,  F01K13/02 ,  F01D25/00 ,  C21D1/34 ,  F01D5/12

摘要： A dehydrogenation processing method for a turbine blade of a steam turbine. The method includes a step of heating the turbine blade by suppling heating steam into a casing of the steam turbine after a steam turbine plant is stopped. The heating steam supplied to the casing has a temperature that is higher than steam passing through the turbine blade during operation of the steam turbine plant. The method further includes repeating the process of supplying the heating steam into the casing a multiple of times.

公开(公告)号：US11047017B2

公开(公告)日：2021-06-29

申请号：US15953163

申请日：2018-04-13

申请人： G.C. Laser Systems, Inc.

发明人： Bartosz Andrzej Dajnowski

IPC分类号： C21D1/34 ,  B23K26/00 ,  B23K26/36 ,  B23K26/352 ,  B23K26/073 ,  B23K26/066 ,  B23K26/082 ,  B23K26/06 ,  B08B7/00 ,  B23K26/361 ,  B23K101/34

摘要： Laser ablation devices that utilize beam profiling assemblies to clean and process surfaces are described herein. A method includes directing a laser beam in a geometrical pattern at an arcuate surface of a cylindrical target, blocking a portion of the laser beam to prevent a portion of the geometrical pattern from contacting the cylindrical target, and rotating the cylindrical target as the laser beam contacts the arcuate surface so as to ablate the cylindrical target.

公开(公告)号：US10954577B2

公开(公告)日：2021-03-23

申请号：US15389556

申请日：2016-12-23

申请人： Benteler Automobiltechnik GmbH

发明人： Georg Frost ,  Martin Hesselmann ,  Markus Kettler ,  Christoph Nitschke

IPC分类号： B21D43/05 ,  C21D9/46 ,  C21D9/48 ,  C21D9/00 ,  C21D1/18 ,  B21D22/02 ,  C21D1/34 ,  C21D1/673 ,  C21D8/00

摘要： A hot-forming line and a method for operating the hot-forming line is disclosed having a temperature-control station and a hot-forming and press-hardening tool. A linear conveyor system for conveying the metal blank or the formed steel-sheet products, respectively, through the hot-forming line is provided.