Transactions of Materials and Heat Treatment

Title：Structure improvement of cold extruding die

Authors： ZHENG Hui1 2 YU Jiang3 LIAO Li-ping3(1.School of Aerospace Engineering Shenyang Institute of Aeronautical Engineering Shenyang 110034 China 2.State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110004 China 3.Shenyang Airplane

Unit：

KeyWords： cold extruding die tryout die service life of die

ClassificationCode：TG375.41

year,vol(issue):pagenumber：2007,32(5):92-93

Abstract：

In view of the forming process difficulty of the high precision part,the problems of the present cold extruding die,such as big flash and low service life were analyzed.A practical improving measure about the die structure was put forward.The die structure was changed from the integral structure to the separation structure,which means that the orientation part and the die part were separated.Then the problems of the inconvenient handling of surface roughness on the two sides and at the bottom of the die and the flash were resolved and the die service life was improved.The tryout shows that the product has high surface quality and the dimensional accuracy meets the requirements.Through the actual production verification,the service life of the cold extruding die is greatly extended from 12 to 100 pieces.

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Reference：

[1]虞传宝.冷冲压及塑料成形工艺与模具设计资料[M].北京:中国标准出版社,1993.
[2]郑大中.模具结构图册[M].北京:机械工业出版社,1995.
[3]王孝培.冲压手册[M].北京:轻工业出版社,1988.

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