Non-uniform Contact and Friction Sensitivity on Formability of Boron Steel in Hot Stamping Process

摘要：

　　Hot stamping parts made of boron steel have been widely used in automotive industry.In forming process of a hot-stamped vehicle bumper, non-uniform contact and friction between the boron steel and tools caused the bumper groove sidewalls excessive thinning or crack.Increasing stamping speed could improve the non-uniformity of blank temperature field and reduce the temperature difference.Influence of the stamping speed and the friction on the forming quality were studied by numerical simulation.The results showed that increasing the stamping speed within a certain range or using reasonable lubrication could reduce the thickness reduction of the sidewall.A bumper without cracking was obtained with a high stamping speed of 300 mm/s and a certain lubrication method.

关键词： non-uniform contact friction hot stamping numerical simulation stamping speed

作者: Yong Liu Zhongxiang Gui Zhigao Huang Yilin Wang Yisheng Zhang

作者单位: State Key Laboratory of Material Processing and Die & Mould Technology,Huazhong University of Science and Technology,Wuhan 430074,P.R.China

会议类型: 国际会议

会议名称: 2014 International Conference on Hot Stamping of UHSS(2014高强度钢热冲压成形国际会议)

会议地点: 重庆

会议语种:英文

页码: 205-208

在线出版日期: 2014-08-21（万方平台首次上网日期，不代表论文的发表时间）