公开(公告)号：US11118254B2

公开(公告)日：2021-09-14

申请号：US16127581

申请日：2018-09-11

Applicant: CITIC Dicastal CO., LTD.

Inventor： Zuo Xu ,  Guoyuan Xiong ,  Honglei Liu ,  Hongfeng Liu ,  Rui Wang ,  Changhai Li

IPC: C22F1/04 ,  C22F1/00

Abstract: A thermal treatment method for an A356 aluminum alloy cast-spun wheel is provided. The thermal treatment method is characterized by including the steps of: 1) heating an aluminum alloy wheel cast-spun piece to 540-550° C.; 2) preserving the heat of the aluminum alloy wheel cast-spun piece for 275-285 minutes at the temperature of 540-550° C.; 3) quenching the aluminum alloy wheel cast-spun piece in water of 70-90° C. for 180 seconds; 4) heating the aluminum alloy wheel cast-spun piece to 150-160° C.; 5) preserving the heat of the aluminum alloy wheel cast-spun piece for 175-185 minutes at 150-160° C.; and 6) cooling the aluminum alloy wheel cast-spun piece in air to room temperature.