In order to solve the problems of cracking caused by poor plasticity and large spring-back affecting dimensional precision during cold stamping of high aluminum alloy sheet, a novel technology named hot forming and quenching integrated process has been developed. The technology combined hot forming and quenching together in one operation where the sheet is rapidly transferred to the forming die after solution treatment and then in-die quenching is performed and the strength is finally improved by aging treatment. In this paper, firstly latest developments in hot stamping process for aluminum alloy sheet are summarized, and then some research achievements of hot stamping process experiments are introduced, which formability of hot stamping and solid solution aging strengthening are described in details. At last some progresses about the hot stamping die technology are presented from the view of the friction mechanism and interfacial heat transfer.
王义林,刘勇,耿会程,张宜生. 高强铝合金热冲压成形技术研究进展[J]. 航空制造技术, 2019, 62(16): 22-35.
WANG Yilin, LIU Yong, GENG Huicheng, ZHANG Yisheng. Research Progresses of Hot Stamping Technology for High Strength Aluminum Alloy Sheet. Aeronautical Manufacturing Technology, 2019, 62(16): 22-35.