US 11,781,197 B2
Stamped components with reduced hot-forming cycle time
Qi Lu, Shanghai (CN); Congjie Wang, Shanghai (CN); Jianfeng Wang, Jiangsu (CN); Zhisong Chai, Shanghai (CN); and Wei Xu, Liaoning (CN)
Assigned to GM Global Technology Operations LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Aug. 17, 2022, as Appl. No. 17/889,807.
Claims priority of application No. 202210106684.8 (CN), filed on Jan. 28, 2022.
Prior Publication US 2023/0243012 A1, Aug. 3, 2023
Int. Cl. C21D 9/46 (2006.01); C22C 38/18 (2006.01); C22C 38/04 (2006.01); C22C 38/02 (2006.01); C21D 8/02 (2006.01); C21D 6/00 (2006.01); B21D 22/02 (2006.01)
CPC C21D 9/46 (2013.01) [B21D 22/022 (2013.01); C21D 6/002 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 8/0205 (2013.01); C21D 8/0247 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/18 (2013.01); C21D 2211/001 (2013.01); C21D 2211/008 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of forming a component, the method comprising:
providing a work-piece blank from a formable material, wherein the work-piece blank includes at least one section having a surface roughness greater than 1 μm configured to facilitate radiation of thermal energy therefrom when the work-piece blank is heated;
austenitizing the work-piece blank via heating the work-piece blank at a predetermined temperature for a predetermined amount of time to achieve an austenite microstructure in the at least one section and forestall oxidation of the work-piece blank;
transferring the austenitized work-piece blank into a forming press;
forming the component via the forming press from the austenitized work-piece blank;
quenching the component formed from the austenitized work-piece blank; and
cooling the component formed from the austenitized work-piece blank.