超高强钢热成形淬火阶段的工艺参数优化  

Optimization of quenching parameters of ultrahigh strength steel in hot stamping process

作　　者：谷诤巍[1] 吕萌萌[1] 赵立辉[1] 徐虹[1] 李欣[1] 陆冠含 

机构地区：[1]吉林大学材料科学与工程学院,长春130022

出　　处：《吉林大学学报（工学版）》2016年第3期853-858,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：工信部高档数控机床与基础制造装备科技重大专项项目(2009ZX04014-072-01);吉林省科技发展计划项目(20130102021JC)

摘　　要：以汽车用超高强钢22MnB5为研究对象,开发了一种压力可调的热成形淬火装置,采用二步染色金相分析技术及材料性能试验等对热成形淬火阶段工艺参数进行优化。结果表明:对于2mm厚22MnB5,当以室温下的水为冷却介质时,热成形淬火阶段板料发生完全马氏体转变的临界压力为0.3 MPa;实际生产中,2mm厚22MnB5热成形淬火阶段的最佳压力为1.0 MPa以上;板料从800℃开始冷却时,最佳的保压时间为8s。An adjustable pressure apparatus for hot stamping quenching was developed,and ultrahigh strength steel 22MnB5 applied for automobile is tested in the apparatus.The two-stage color tint etching procedure for microstructure analysis and material property experiments were used for the optimization of the hot stamping quenching parameters.Results show that the critical pressure for 2mm 22MnB5 in quenching is 0.3 MPa when the coolant is water in room temperature.Besides,the optimum pressure range in actual production for 2mm 22MnB5 in quenching is over 1.0MPa,and the best holding time is 8swhen the blank is cooled from 800 ℃.

关 键 词：材料合成与加工工艺 22MnB5 热成形 淬火 

分 类 号：TG306[金属学及工艺—金属压力加工]