Transactions of Materials and Heat Treatment

Title：Structural optimization of hot forging die for car backplane

Authors： Wang Yuxiao Li Xia Sun Libin Fu Ke

Unit： Shanghai University of Engineering Science Shanghai JD Chukyo Forging & Stamping Co. Ltd.

KeyWords： car backplane hot forging die Deform numerical simulation structural optimization

ClassificationCode：

year,vol(issue):pagenumber：2014,39(7):121-125

Abstract：

As the hot forging die cavity of car backplane is deep and narrow,the cooling of forgings is fast in manufacturing process，and the fracture failure，mandril wear and demolding hardly etc. which are easily occurred in die，and the corresponding reasons were analyzed by simulating the original forging die using Deform.The reasons are as follows：complicated car backplane, deep and narrow die cavity make the die have bigger stress and tend to fracture；unreasonable position of mandril hole makes the mandril tend to wear and demold hardly. The stress of preforging die and final forging die are respectively decreased by 200 and 120 MPa by optimizing forming surface structure of die, adjusting mandril hole position and improving process.The die life is raised from around 40 products at trail time to more than 3705 ones. Production efficiency is raised and demolding is more easy.

Funds：

上海市高校与上海中小企业产学合作项目（12QY20）；联盟计划难题招标专项资助项目（LM201275）；上海工程技术大学研究生科研创新资助项目(13KY0518)

王宇晓（1990-），男，硕士研究生

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