公开(公告)号：US20230311191A1

公开(公告)日：2023-10-05

申请号：US18042280

申请日：2020-11-20

Applicant: G-TEKT CORPORATION

Inventor： Hiroki ITOI ,  Katsuhito AMAGASA

IPC: B21D37/16 ,  B21D22/20

CPC classification number: B21D37/16 ,  B21D22/20

Abstract: A die press-forms a tailor welded blank (12A) in a heated state, the tailor welded blank being formed by welding a first plate portion (34) made of a first metal plate material and a second plate portion (35) made of a second metal plate material thicker than the first metal plate material while making the first plate portion and the second plate portion abut against each other. The die includes a refrigerant passage through which a refrigerant flows, and at least one refrigerant ejection path (64) having one end connected to the refrigerant passage and the other end opening to a forming surface of the die (lower die 13). The die includes a first forming surface (51), and a second forming surface (52), farther apart from a forming surface of another die than the first forming surface (51), for forming a step (53) together with the first forming surface (51). The other end of the at least one refrigerant ejection path (64) opens near the step (53) on the second forming surface (52) between the first forming surface (51) and the second forming surface (52). It is possible to provide a die for hot press forming, which can perform quenching even for the step portion of the metal plate material and increase hardness.

公开(公告)号：US11702562B2

公开(公告)日：2023-07-18

申请号：US17534720

申请日：2021-11-24

Applicant: PPG Industries Ohio, Inc.

Inventor： Huy Lai ,  Kris M. Kazik ,  Keri Veres

IPC: C09D167/00 ,  C09D167/02 ,  C08G63/91 ,  B05D7/14 ,  B21D22/20 ,  B21D51/26 ,  B65D1/16 ,  B65D23/02

CPC classification number: C09D167/00 ,  B05D7/14 ,  B21D22/201 ,  B21D51/26 ,  B65D1/165 ,  B65D23/02 ,  C08G63/916 ,  C09D167/02 ,  C09D167/02 ,  C08K5/092

Abstract: A coating composition includes: (a) 60 to 90 percent by weight of an active hydrogen-containing polyester having a number average molecular weight of at least 23,000, an acid value below 5 and a hydroxyl value below 10, (b) 0.1 to 10 percent by weight of a polyanhydride, and (c) 5 to 30 percent by weight of a curing agent reactive with the active hydrogens associated with (a) and (b), the percentages being based on weight of resin solids of the coating composition, where the reaction product of the coating composition forms a single coating without including a thermoplastic polymer. The coating composition is useful in coating food and beverage containers, particularly 2-piece cans formed by drawing and redrawing (DRD).

公开(公告)号：US20230150009A1

公开(公告)日：2023-05-18

申请号：US17996868

申请日：2021-04-23

Applicant: TATA STEEL IJMUIDEN B.V.

Inventor： Alexander JIMMINK ,  Joris JONKER ,  Lukas Johannes BEERS

IPC: B21D51/26 ,  B21D22/28 ,  B21D22/20

CPC classification number: B21D51/26 ,  B21D22/286 ,  B21D22/203

Abstract: A method and apparatus for producing two-piece can bodies by drawing and ironing a laminated metal sheet, and more particularly to a processing method which prevents abrasion damage or scuffing of the laminate layer on the can body during its ironing, and a drawn and ironed two-piece can body produced thereby.

公开(公告)号：US20230150002A1

公开(公告)日：2023-05-18

申请号：US17914990

申请日：2020-12-01

Applicant: JFE STEEL CORPORATION

Inventor： Yusuke FUJII ,  Masaki URABE

IPC: B21D22/26 ,  B21D22/20

CPC classification number: B21D22/26 ,  B21D22/201

Abstract: A press forming method includes: press forming a press formed product including a top portion, a side wall portion continuous from the top portion through a punch shoulder portion, and a flange portion continuous from the side wall portion through a die shoulder portion, the press formed product including a curved portion that is concave and curved in a top view; and increasing a bending radius of the punch shoulder portion in the curved portion from a center of a curve toward an end side of the curve.

公开(公告)号：US20230084149A1

公开(公告)日：2023-03-16

申请号：US17552176

申请日：2021-12-15

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Haihui ZHU ,  Hang YUAN ,  Zhubin HE ,  Shijian YUAN

IPC: B21D22/20

Abstract: 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

Applicant: Adval Tech Holding AG

Inventor： Matthias COMMON ,  Urs GRAF ,  Jürg SPIELER

IPC: B21D51/24 ,  B21D22/20

Abstract: 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

Applicant: Hyundai Motor Company ,  Kia Motors Corporation

Inventor： Youn-Il Jung

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

Abstract: 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

Applicant: Hexagon Manufacturing Intelligence Canada Limited

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

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

Abstract: 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

Applicant: SCHWARTZ GMBH

Inventor： Frank Wilden ,  Andreas Reinartz ,  Jörg Winkel

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

Abstract: 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

Applicant: JFE STEEL CORPORATION

Inventor： Katsutoshi Takashima ,  Takashi Kobayashi ,  Yoshimasa Funakawa ,  Seiji Nakajima

IPC: 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

Abstract: 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.