公开(公告)号：US11794280B2

公开(公告)日：2023-10-24

申请号：US17725813

申请日：2022-04-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mingfeng Shi ,  Sarah Tedesco ,  Qi Lu ,  Jason J. Coryell ,  Jianfeng Wang

IPC: C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/02 ,  C22C38/04 ,  B23K26/26 ,  C21D9/50 ,  C22C38/48 ,  C21D6/00 ,  B21D22/02

CPC classification number: B23K26/26 ,  B21D22/022 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D9/50 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C21D2211/001

Abstract: A hot formed joined blank includes a first metal blank having an ultimate tensile strength of ≥about 1300 MPa to ≤about 2000 MPa and defining a first surface, a second metal blank having an ultimate tensile strength of ≥about 400 MPa to ≤about 1200 MPa and defining a second coated surface having a coating disposed thereon. The coating includes aluminum and silicon or in alternative variations, zinc. A third surface of the second metal blank is joined to the first surface of the first metal blank to form the hot formed joined blank. A weld nugget is disposed along a boundary between the first and second metal blanks that is configured to join the first and second metal blanks, where the weld nugget optionally includes less than or equal to about 1.5 weight percent aluminum or a microstructure comprising austenite and delta-ferrite.

公开(公告)号：US20250066868A1

公开(公告)日：2025-02-27

申请号：US18468256

申请日：2023-09-15

Applicant: GM Global Technology Operations LLC

Inventor： Sarah Tedesco ,  Mingfeng Shi ,  Jianfeng Wang ,  Zhou Wang ,  Jason J. Coryell ,  Jiachen Pang ,  Zhen Chen ,  Shane Michael Anderson ,  Daniel Baker

IPC: C21D1/42 ,  C21D6/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18

Abstract: A method to achieve variable properties of a component using a coating free press hardened steel comprises: transferring a blank of a coating free press hardened steel (CFPHS) material having base blank properties into a heating unit having multiple induction heating coils; heating the blank within the heating unit to create a modified blank having differing modified blank properties throughout the modified blank compared to base blank properties; moving the modified blank out of the heating unit into a die; and forming a shaped part by operation of the die creating a finished CFPHS part.

公开(公告)号：US20240139875A1

公开(公告)日：2024-05-02

申请号：US18049660

申请日：2022-10-26

Applicant: GM Global Technology Operations LLC

Inventor： Jason J. Coryell ,  Mingfeng Shi ,  Sarah Tedesco ,  Jatinder Paul Singh

IPC: B23K26/24 ,  B21D28/26 ,  B23K26/322

CPC classification number: B23K26/24 ,  B21D28/26 ,  B23K26/322 ,  B23K2101/185

Abstract: A method of assembling a vehicle component, a system for assembling a vehicle component, and a vehicle component assembly. A blank is formed from a steel sheet, wherein the steel sheet includes a coating on a surface. The coating is removed from a first interface surface of the blank and the blank is stamped either prior to or after removing the coating. The first dynamic interface surface is arranged relative to a second interface surface and thermally joined to form a joint.