公开(公告)号：US20230084149A1

公开(公告)日：2023-03-16

申请号：US17552176

申请日：2021-12-15

申请人： DALIAN UNIVERSITY OF TECHNOLOGY

发明人： Haihui ZHU ,  Hang YUAN ,  Zhubin HE ,  Shijian YUAN

IPC分类号： B21D22/20

摘要： A forming method of a deep cavity thin-walled metal component with extremely small fillet radius is provided. In the forming method of a deep cavity thin-walled metal component with extremely small fillet radius, a global cavity is formed by deep drawing by means of a rigid die, an extremely small fillet is formed by means of a extrusion/pushing die, so that the deep drawing process is independent of the extremely small fillet forming process, and the problems of wrinkling, cracking and the like in the process of forming the two simultaneously are avoided. Thus, the problem that the extremely small fillet is difficult or impossible to form can be solved.

公开(公告)号：US20220395887A1

公开(公告)日：2022-12-15

申请号：US17836346

申请日：2022-06-09

申请人： Adval Tech Holding AG

发明人： Matthias COMMON ,  Urs GRAF ,  Jürg SPIELER

IPC分类号： B21D51/24 ,  B21D22/20

摘要： Method for producing an aerosol dome having a dome region with an upwardly adjoining rolled rim arranged at an upper passage opening and with a downwardly adjoining flange region with an everted portion. An intermediate stage is prepared in one or more stages from a lacquer-coated blank (R), the intermediate stage having the upper passage opening, followed downwardly by a neck portion, then followed by the dome region, which is followed by an encircling straight flange. The intermediate stage is processed in a processing stage (S9) in which only the everted portion is formed.

公开(公告)号：US11504757B2

公开(公告)日：2022-11-22

申请号：US16179954

申请日：2018-11-04

申请人： Hyundai Motor Company ,  Kia Motors Corporation

发明人： Youn-Il Jung

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

摘要： An apparatus for forming an aluminum plate is provided. The apparatus includes an upper die that has a bottom surface that corresponds to a top shape of a product shape to be formed and descends by a press to press the aluminum plate. The apparatus also includes a lower die that has an upper surface that corresponds to a bottom shape of the product shape and an electrode unit that is inserted into the lower die and is exposed on the upper surface of the lower die to apply a current to a bent portion of the product shape.

公开(公告)号：US11449646B2

公开(公告)日：2022-09-20

申请号：US16671311

申请日：2019-11-01

申请人： Hexagon Manufacturing Intelligence Canada Limited

发明人： Victor Apanovitch ,  Stefan Martin Walter Huhn ,  Yongguo Wu ,  Derek Edward George Peeling ,  Dong Zhao

IPC分类号： G06F30/00 ,  B23P15/24 ,  B21D22/20 ,  G06F30/15 ,  G06F30/17 ,  G05B19/4093 ,  G06F113/24

摘要： A method is provided for the creation of an addendum for use in the design and production of sheet metal formed components, which method uses a sectionless approach. In a preferred approach, elevation curve (EC) lines are established relating to the component (ECc) and binder (ECb), and it is these lines which are used to design the addendum. Additional EC lines (EC1, EC2, EC3, etc.) can be added to modify or optimize the addendum design. The spaces between the EC lines are filled using various parameterized filling techniques so as to provide the addendum design. Optimization of the addendum can be achieved by modification of the various EC lines, so as to modify or control the various design parameters, in accordance with various quality or design criteria. A more rapid, and less complicated approach to addendum design is provided.

公开(公告)号：US11447838B2

公开(公告)日：2022-09-20

申请号：US16072681

申请日：2017-01-25

申请人： SCHWARTZ GMBH

发明人： Frank Wilden ,  Andreas Reinartz ,  Jörg Winkel

IPC分类号： C21D1/673 ,  C21D9/00 ,  C22C38/04 ,  C22C38/00 ,  C21D9/48 ,  B21D24/16 ,  B21D22/20 ,  B62D25/04 ,  B23P9/00

摘要： The invention relates to a method and to a device for heat treating a metal component. The method comprises at least the following steps: a) heating the component; b) setting a temperature difference between at least one first sub-region and at least one second sub-region of the component; c) at least partially forming and/or cooling the component in a press hardening tool; and d) mechanically post-processing the at least one first sub-region of the component.

公开(公告)号：US11377709B2

公开(公告)日：2022-07-05

申请号：US16616602

申请日：2018-03-30

申请人： JFE STEEL CORPORATION

发明人： Katsutoshi Takashima ,  Takashi Kobayashi ,  Yoshimasa Funakawa ,  Seiji Nakajima

IPC分类号： B32B15/00 ,  C21D9/46 ,  B21D22/20 ,  B21K29/00 ,  B32B15/01 ,  C21D1/18 ,  C21D6/00 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/08 ,  C22C38/16 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C23C2/06 ,  C23C2/12 ,  C23C2/40 ,  C25D3/22 ,  C25D3/54 ,  C25D3/56

摘要： Disclosed is a hot-pressed member that can exhibit very high tensile strength after hot pressing, excellent delayed fracture resistance, and high tensile shear stress after resistance spot welding by properly adjusting its chemical composition and its microstructure such that at least 20 Nb-based precipitates having a grain size of less than 0.10 μm are present on average per 100 μm2 of a cross section parallel to a thickness direction of the member, a prior austenite average grain size is 8 μm or less, an average aspect ratio of prior austenite grains is 2.5 or less, and a volume fraction of martensite is 90% or more, and such that a standard deviation of Vickers hardness measured every 200 μm on a surface of the member is 40 or less.

公开(公告)号：US11344941B2

公开(公告)日：2022-05-31

申请号：US14233617

申请日：2012-07-18

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

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

IPC分类号： 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

摘要： 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

申请人： Dalian University of Technology

发明人： Xiaobo FAN ,  Shijian YUAN

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

摘要： 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

申请人： EKL Machine Company

发明人： William Hibbs ,  Daniel Livezey ,  Jeffrey Schenk ,  Daniel Menno ,  Edward Lydon

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

摘要： 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

申请人： NIPPON STEEL CORPORATION

发明人： Masahiro Kubo ,  Yoshiaki Nakazawa ,  Hiroshi Yoshida

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

摘要： 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).