The Process Optimization to Prevent the Local Wrinkles of Hot Stamping Parts and the Design of Tools

摘要：

　　during the process of hot stamping, due to the deformations of sheet metals are mainly bending and shallow drawing, as well as to prevent the temperature strikingly drop caused by the local contact of sheet metal and die, the hot stamping tool usually does not set up blank-holder.And this leads to the occurrence of local wrinkles in some types of hot stamping parts, which affect the quality of the parts.Through the hot stamping tool design and process test of a cars B pillar, it discovered that the local wrinkle in the parts big end is more severe.As a result the program was modified by taking advantage of the forming principle of the counter punch to improve the design of upper tool (die), which eliminated the local wrinkle in the big end and improved the contact cooling efficiency, consequently ensured the hot forming parts quality and reduced the production rhythm.

关键词： hot stamping the control of local wrinkles numerical modeling the B pillar of vehicles the design of tools

作者: Shaoli Sun Zijian Wang Xiaochun Yao Yilin Wang Yisheng Zhang

作者单位: State Key Laboratory of Material Processing and Die & Mold Technology,Huazhong University of Science Dongguan Hot-stamping Technology Co.,Ltd.,Dongguan 523475,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: 217-220

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）