公开(公告)号：US11344941B2

公开(公告)日：2022-05-31

申请号：US14233617

申请日：2012-07-18

Applicant: Takayuki Yamano ,  Jiro Iwaya ,  Noriyuki Jimbo ,  Tatsuya Asai ,  Naoki Mizuta

Inventor： Takayuki Yamano ,  Jiro Iwaya ,  Noriyuki Jimbo ,  Tatsuya Asai ,  Naoki Mizuta

IPC: B21D22/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/28 ,  C22C38/34 ,  C22C38/38 ,  C22C38/42 ,  C22C38/50 ,  C22C38/54 ,  C22C38/30 ,  C21D1/673 ,  B21D22/20 ,  C22C38/58 ,  C21D8/02 ,  C22C38/32

Abstract: In a method for obtaining a hot-press-formed steel member, a steel sheet containing 0.10-0.30 mass % of C, 1.0-2.5 mass % of Si, 1.0-3.0 mass % of Si and Al in total, and 1.5-3.0 mass % of Mn is heated at a heating temperature of not less than the Ac3 transformation point. The steel sheet is hot-press formed for one or more times. The starting temperature of the hot pressing is not more than the heating temperature but not less than the Ms point. The average cooling rate from (Ms point−150)° C. to 40° C. is 5° C./s or less. The hot-press-formed steel member has high strength, high tensile elongation, high bendability, excellent deformation characteristics at the time of collision crush, and excellent delayed fracture resistance.

公开(公告)号：US20220161308A1

公开(公告)日：2022-05-26

申请号：US17456618

申请日：2021-11-26

Applicant: Dalian University of Technology

Inventor： Xiaobo FAN ,  Shijian YUAN

IPC: B21D22/02 ,  B21D22/20 ,  B21D37/16

Abstract: Disclosed is an ultra-low temperature medium pressure forming method for complex curved-shaped components. The method includes steps of distributing a blank by die closing preforming and forming the complex curved-shaped components by ultra-low temperature medium pressurization, comprising: placing a plate on a female die and tightly pressing the plate by a blank holder; driving a male die to move downwards to make the plate distribute the blank in advance in a large-area mode, thus forming a prefabricated plate blank; filling a cavity with an ultra-low temperature medium to make the prefabricated plate blank be gradually attached to a molded surface of a female die cavity under the pressure action of the ultra-low temperature medium, and thereby forming the complex curved-shaped component; and removing the male die blank holder and taking out the formed complex curved-shaped component.

公开(公告)号：US11260445B2

公开(公告)日：2022-03-01

申请号：US16659122

申请日：2019-10-21

Applicant: EKL Machine Company

Inventor： William Hibbs ,  Daniel Livezey ,  Jeffrey Schenk ,  Daniel Menno ,  Edward Lydon

IPC: B21D51/26 ,  B21D24/00 ,  B21D22/20 ,  B21D28/08

Abstract: Embodiments provide a tooling station for forming containers that includes a blank and draw punch configured to blank off a portion of stock from a stock element and draw the portion of stock to form a cup. The blank and draw punch includes a blank and draw punch curved edge disposed between a blank and draw punch inner circumferential wall and a blank and draw punch proximal surface. The blank and draw punch curved edge has a radius of curvature that varies along its circumference. The tooling station also includes a draw-redraw die configured to redraw the cup to form a can having a flange. The draw redraw die includes a draw-redraw die curved edge disposed between a draw-redraw die inner circumferential wall and a draw-redraw die proximal surface. The draw-redraw die curved edge has a radius of curvature that varies along its circumference.

公开(公告)号：US11161163B2

公开(公告)日：2021-11-02

申请号：US16795796

申请日：2020-02-20

Applicant: NIPPON STEEL CORPORATION

Inventor： Masahiro Kubo ,  Yoshiaki Nakazawa ,  Hiroshi Yoshida

IPC: B32B3/00 ,  B21D22/20 ,  C21D9/48 ,  C22C38/14 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C21D8/02

Abstract: The method includes treating a metal sheet having a bcc structure and a surface satisfying conditions (a) or (b), molding the metal sheet to cause plane strain tensile deformation and biaxial tensile deformation, and allowing at least one part of the metal sheet to have a sheet thickness decrease rate of from 10% to 30%. Condition (a): an area fraction of crystal grains having a crystal orientation of 15° or less relative to a (001) plane parallel to a surface of the metal sheet is from 0.20 to 0.35. Condition (b): the area fraction of crystal grains having a crystal orientation of 15° or less relative to a (001) plane parallel to a surface of the metal sheet is 0.45 or less, the average crystal grain size thereof is 15 μm or less. The molded product satisfies conditions (a) or (b).

公开(公告)号：US11135633B2

公开(公告)日：2021-10-05

申请号：US16313451

申请日：2017-06-26

Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION

Inventor： Yasuharu Tanaka ,  Toshimitsu Aso ,  Takashi Miyagi ,  Misao Ogawa ,  Shinobu Yamamoto ,  Keita Ikegami

IPC: B21D22/26 ,  B21D24/04 ,  B21D24/12 ,  B21D22/20 ,  B21D5/00 ,  B21D5/04 ,  B21D5/06 ,  B21D25/04

Abstract: A method or apparatus to produce an L-shaped pressed component includes, where a portion of a blank, having tensile strength of 1180 MPa or more, is held in a state of being clamped by a blank holder and a die, and a portion of the blank, to be formed into a top plate is held in a state of being clamped by a pad and a punch; the second step where a vertical wall, a concave ridge and a flange on the inner side of a curved portion are formed by, bend forming with a bending die, forming one, two or more material inflow promoting portion; and the third step where the die is moved in a direction toward a side where the blank holder is disposed to form a vertical wall, a concave ridge, and a flange on the outer side of the curved portion by draw forming.

公开(公告)号：US11131037B2

公开(公告)日：2021-09-28

申请号：US16046458

申请日：2018-07-26

Applicant: Frank Hirschmann ,  Kathrin Eckhard ,  Bernhard Kernig ,  Gernot Nitzsche ,  Henk-Jan Brinkman

Inventor： Frank Hirschmann ,  Kathrin Eckhard ,  Bernhard Kernig ,  Gernot Nitzsche ,  Henk-Jan Brinkman

IPC: C25F3/04 ,  B21D22/20 ,  C23C22/78 ,  B21D53/88 ,  C22F1/04

Abstract: The invention relates to a strip or sheet consisting of an aluminium alloy having a unilateral or bilateral surface structure prepared for a forming process, in particular it relates to a strip or sheet for formed motor vehicle components. The object of providing an aluminium alloy strip or sheet having a surface structure prepared for a forming process, which is easy to produce and has improved tribological characteristics in respect of a subsequent forming process, is achieved for a strip or sheet consisting of an aluminium alloy in that the strip or sheet has on one side or on both sides a surface with depressions as lubricant pockets which are produced using an electrochemical graining process.

公开(公告)号：US11118242B2

公开(公告)日：2021-09-14

申请号：US15807645

申请日：2017-11-09

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Eiichi Ota ,  Yasuhiro Yogo ,  Tomoaki Ihara ,  Shinobu Okuma

IPC: C21D9/48 ,  C21D1/22 ,  B21D22/20 ,  B21D22/02 ,  C21D1/673

Abstract: A hot-press molding method of the present disclosure includes a first heating process in which a steel plate is heated and the entire steel plate becomes austenite, a first cooling process in which a cooling rate of the steel plate after the first heating process is partially changed, a first region which is a part of the steel plate is transformed into martensite, and a second region other than the first region remains as austenite, a second heating process in which the entire steel plate is reheated and the first region becomes tempered martensite, and a second cooling process in which the entire steel plate after the second heating process is cooled. At least one of the first cooling process and the second cooling process is performed during a molding process in which the steel plate is press-molded on a molding die.

公开(公告)号：US11026339B2

公开(公告)日：2021-06-01

申请号：US15522429

申请日：2015-10-20

Applicant: Robert Bosch GmbH

Inventor： Klaus Eppel ,  Michael Schermann ,  Reiner Ramsayer ,  Wolfgang Glueck

IPC: H05K5/06 ,  B21D22/20 ,  B23K9/032 ,  H05K5/04 ,  B23K101/36 ,  H05K5/00

Abstract: A method for producing a housing for electronics in which the housing is formed by a first housing element and a second housing element and in which the housing elements are composed of aluminum or an aluminum alloy. The method further includes connecting the housing elements to one another by welding so that the housing elements are held tightly together. The method also includes producing at least one of the housing elements by a die casting method in which gas that is created in the die-casting method is evacuated from the housing element by helium gas.

公开(公告)号：US10994783B2

公开(公告)日：2021-05-04

申请号：US15880464

申请日：2018-01-25

Applicant: AUTOTECH ENGINEERING S.L. ,  HONDA MOTOR CO., LTD.

Inventor： Christophe Cazes ,  Gregory Gatard ,  Martin Jonsson ,  Atsushi Hasegawa ,  Yusuke Miura

IPC: B62D21/15 ,  B21D22/20 ,  C21D9/00 ,  B21D35/00 ,  B62D29/00 ,  B21D22/02 ,  B21D47/00 ,  B21D53/88 ,  C21D11/00 ,  C21D1/673

Abstract: A metal piece having at least two areas of lower mechanical strength than the body of the piece, said pieces being respectively arranged on one side and the other of a longitudinal central section (PM) of said piece and alternatively located in two locations separated longitudinally along the piece, the areas of lower mechanical strength than the body of the piece being formed by local control of the stamping temperature during a stamping process of the piece, notably a process comprising steps including heating the piece to a temperature range suitable for obtaining an austenitic stage, then stamping this piece in a stamping tool suitable for defining different temperatures in the different areas of the stamped piece, for example by virtue of the voids formed in the stamping tool or by local reheating of the stamping tool.

公开(公告)号：US10994320B2

公开(公告)日：2021-05-04

申请号：US16135833

申请日：2018-09-19

Applicant: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

Inventor： Christoph Zeh ,  Thomas Härtling

IPC: B21C51/00 ,  B05D3/02 ,  B05D3/00 ,  B21D22/20 ,  B21D22/00 ,  B21D22/02 ,  B05D7/16 ,  B05D7/26 ,  B41M1/28 ,  B41K99/00

Abstract: In an embodiment, a workpiece includes a hot-formed metal body and a marking, wherein the marking comprises a phosphor and/or pigments which are at least partly arranged on the metal body and which exhibit a reflection behavior and/or a reflectance behavior and/or an albedo behavior deviating from the metal body.