US 12,091,736 B2
Spinning process of magnesium alloy wheel hub
Lixin Huang, Qinhuangdao (CN); Zuo Xu, Qinhuangdao (CN); Meng Li, Qinhuangdao (CN); Shiwen Xu, Qinhuangdao (CN); Liguang Xie, Qinhuangdao (CN); and Lijun Zhang, Qinhuangdao (CN)
Assigned to CITIC Dicastal Co., Ltd., Qinhuangdao (CN)
Filed by CITIC Dicastal Co., Ltd., Qinhuangdao (CN)
Filed on Jan. 14, 2022, as Appl. No. 17/576,276.
Claims priority of application No. 202111031593.4 (CN), filed on Sep. 3, 2021.
Prior Publication US 2023/0080640 A1, Mar. 16, 2023
Int. Cl. C22F 1/06 (2006.01); B21J 1/06 (2006.01)
CPC C22F 1/06 (2013.01) [B21J 1/06 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A spinning process of a magnesium alloy wheel hub, wherein the spinning process comprises the following steps:
Step 1, heating a magnesium alloy bar at 350-430° C. and keeping the temperature for 20 minutes;
Step 2, initially forging and forming on the bar under a forging press, wherein the forging down-pressing speed is 6-15 mm/s;
Step 3, finally forging and forming on the bar under a forging press to obtain a final forged magnesium alloy blank, wherein the forging down-pressing speed is 5-8 mm/s;
Step 4, stress relief annealing on the final forged magnesium alloy blank, the stress relief annealing temperature is 300-350° C., and the holding time of the stress relief annealing is 6-8 h;
Step 5, solution treatment on the annealed magnesium alloy blank, the solution treatment temperature is 390-420° C., and the holding time of the solution treatment is 16-24 h;
Step 6, taking out the blank after solution treatment and directly spinning by a spinning machine;
Step 7, aging treatment.