US 11,745,252 B2
Method of producing a magnesium alloy wheel hub
Lixin Huang, Qinhuangdao (CN); Zuo Xu, Qinhuangdao (CN); Decai Kong, Qinhuangdao (CN); Jingru Shen, Qinhuangdao (CN); Meng Li, Qinhuangdao (CN); Tieqiang Chen, Qinhuangdao (CN); and Qingzhu 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. 17/576,220.
Claims priority of application No. 202110723588.3 (CN), filed on Jun. 29, 2021.
Prior Publication US 2022/0410252 A1, Dec. 29, 2022
Int. Cl. B21K 1/40 (2006.01); B21J 1/06 (2006.01)
CPC B21K 1/40 (2013.01) [B21J 1/06 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method of producing a magnesium alloy wheel hub, wherein the method comprises the following steps:
Step 1, heating a magnesium alloy bar to a temperature in a range of 350-430° C. for 20 minutes;
Step 2, initially forging the bar under a forging press at a forging speed of 6-15 mm/s;
Step 3, finally forging the bar under the forging press at a forging speed of 5-8 mm/s;
Step 4, performing microstructure test and material property test on a final forged blank to obtain layered material property distribution in a thickness direction of the final forged blank;
step 5, according to the layered material property distribution in the thickness direction of the final forged blank obtained in step 4, selecting a part of the final forged blank in the thickness direction that meets requirements to make a magnesium alloy wheel hub, and making the magnesium alloy wheel hub with the selected part by machining and cutting off a part of the final forged blank in the thickness direction that does not meet the requirements.