公开(公告)号：US20220025473A1

公开(公告)日：2022-01-27

申请号：US17021386

申请日：2020-09-15

Applicant: NORTHEASTERN UNIVERSITY

Inventor： Haijun LI ,  Yi HAN ,  Tianliang FU ,  Jiadong LI ,  Yong LI ,  Zhaodong WANG

IPC: C21D8/02 ,  B24C1/10 ,  C23G1/00

Abstract: An on-line solution heat treatment process for austenitic stainless steel plates is disclosed, which comprises continuous casting billet heating, high pressure water dephosphorization, rough rolling, finish rolling, softening process, ultra fast cooling, straightening, cutting to length, shot peening, pickling. The process of the present invention makes full use of the residual rolling temperature, without the need of reheating steel plates from the room temperature to the solid solution temperature. Compared with the conventional steel plate rolling process, the process needs to perform the softening process on the steel plates after rolling to ensure that the deformed austenite is fully softened before cooling. After the softening process, ultra fast cooling is performed to cool the steel plates from above 800° C. to below 430° C. so as to prevent intergranular chromium depletion caused by a large amount of precipitation of high chromium carbides from affecting the stain resistance of stainless steel.