Transactions of Materials and Heat Treatment

Title：Influence of forming speed on friction property of B340/590DP in sheet metal forming

Authors： LIU Qian LI Jian-jun FU Xiu-juan HUANG Liang

Unit： State Key Laboratory of Materials Processing and Die & Mould Technology Huazhong University of Science and Technology Wuhan 430074 China

KeyWords： sheet metal forming forming speed friction property

ClassificationCode：TG30

year,vol(issue):pagenumber：2012,37(5):27-30

Abstract：

Based on servo press technology and flat sliding tensile friction test, the influence of forming speed on friction property and the frictional mechanism of B340/590DP in sheet metal forming were studied. Test results show that the smaller initial forming speed is at the beginning, the smaller initial frictional force is; the frictional force changes sharply when forming speed changes instantly, and then tends to be stable; the more discrepancy of the forming speed between former stage and later stage is, the more greatly the frictional force changes. Consequently, the less initial forming speed was chosen to decrease the frictional force in favor of plastic flow in order to obtain the good forming performance, and then the more succeeding forming speed was chosen to obtain high efficiency.

Funds：

国家自然科学基金资助项目（50975108，51105042）；国家科技重大专项资助课题(2011ZX04016051)

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