公开(公告)号：US10227673B2

公开(公告)日：2019-03-12

申请号：US15236810

申请日：2016-08-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Hartmut Baumgart ,  Ronald Sanders

IPC: C21D9/46 ,  C25D3/56 ,  C25D5/50 ,  C21D1/06 ,  C21D8/02 ,  C22C18/00 ,  C25D5/48 ,  C21D8/12 ,  C21D1/673 ,  C25D7/06

Abstract: A method for creating a formed steel part from a steel sheet is provided. The steel sheet is heated to austenitization temperature. The steel sheet is formed with simultaneous cooling-down. A manganese-rich surface layer of the formed steel sheet is removed.

公开(公告)号：US10137942B2

公开(公告)日：2018-11-27

申请号：US15422630

申请日：2017-02-02

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ronald Sanders ,  Wolfgang Eberlein ,  Maurice Dietz ,  Hartmut Baumgart

IPC: B62D29/00 ,  B62D25/12 ,  B62D27/02 ,  B62D29/04 ,  B62D43/06 ,  B21C37/00 ,  B62D25/00 ,  B62D25/10 ,  B62D43/10 ,  C21D6/00

Abstract: A workpiece includes a plurality of knots and webs, which are formed in one piece, of a sheet metal, in particular a steel plate. Each web extends between two openings from one knot to another knot, and at least three webs meet at each knot. A plurality of the webs has a cross section, which includes at least one hardened and one unhardened area.

公开(公告)号：US20170225720A1

公开(公告)日：2017-08-10

申请号：US15422630

申请日：2017-02-02

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ronald Sanders ,  Wolfgang Eberlein ,  Maurice Dietz ,  Hartmut Baumgart

IPC: B62D29/00 ,  B62D29/04 ,  B62D27/02 ,  B62D25/12 ,  B62D43/06

CPC classification number: B62D29/005 ,  B21C37/00 ,  B60Y2304/03 ,  B60Y2410/121 ,  B60Y2410/124 ,  B62D25/00 ,  B62D25/105 ,  B62D25/12 ,  B62D27/026 ,  B62D29/007 ,  B62D29/008 ,  B62D29/04 ,  B62D43/06 ,  B62D43/10 ,  C21D6/00 ,  C21D9/50 ,  C21D2221/00

Abstract: A workpiece includes a plurality of knots and webs, which are formed in one piece, of a sheet metal, in particular a steel plate. Each web extends between two openings from one knot to another knot, and at least three webs meet at each knot. A plurality of the webs has a cross section, which includes at least one hardened and one unhardened area.