Transactions of Materials and Heat Treatment

Title：Investigation for process parameters of U-shaped part hot stamping based on numerical simulation

Authors： Wang Rongji Feng Xiaoxin Zhang Liqiang Lou Kuan

Unit： Central South University of Forestry and Technology Hunan University

KeyWords： U-shaped part hot stamping numerical simulation orthogonal experimental design process parameters

ClassificationCode：TG306

year,vol(issue):pagenumber：2014,39(5):29-35

Abstract：

The temperature distribution after packing process is essential to structure and performance of high-strength steel hot stamping parts. In the case of U-shaped parts, the finite element model of hot stamping was established. And the influences of process parameters including initial forming temperature of blank, stamping speed, holding time and frictional coefficient on the maximum temperature difference of U-shaped parts after packing process were discussed by orthogonal experiment based on numerical simulation. The result shows that holding time is the most significant factor for the maximum temperature difference of U-shaped parts after packing process, and extending holding time can reduce the maximum temperature difference of U-shaped parts after packing process significantly. Initial forming temperature of blank is the second, while stamping speed and frictional coefficient have little influence. And the optimal process parameters combination was obtained. Based on the simulation, the U-shaped parts hot stamping test was done. The simulation and test results coincide basically with the same variation trend, and the validity and reliability of numerical simulation were verified.

Funds：

湖南省教育厅科研基金资助项目(13B145)；中南林业科技大学大学生研究性学习和创新性实验计划项目

王荣吉（1971-），男，博士，副教授

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