Transactions of Materials and Heat Treatment

Title：Numerical analysis of warm plastic forming for non-symmetrical axostyle part

Authors： XU Xin-cheng1 ZHAO Zhong-hua2 ZHANG Shui-zhong2(1.Centre of Practice and Training Shanghai University of Engineering Science Shanghai 201620 China 2.School of Material Engineering Shanghai University of Engineering Science Shanghai 201620 China)

Unit：

KeyWords： warm plastic forming FVM non-symmetrical axostyle part

ClassificationCode：TG376

year,vol(issue):pagenumber：2009,34(4):28-31

Abstract：

The main problem of non-symmetrical axostyle spring core-bar forming is that the eccentricity peachy surface and the head bulge can not fill contentedly.And then,it is difficult for designer to design mould correctly.The forming temperature and equipment tonnage are other difficulties to be decided.In general,the designer's experiences and many mould experimentations are needed to solve these questions.Finite volume method was used to simulate the forming process of spring core-bar.The results show that abnormity radial flange which sets on the top part of eccentricity peachy surface can remarkably retard the metal flow and fully fill it.Increasing the radius of punch near the inner pocket,the head bulge can be fully filled also.The streamline analysis of metal flowing shows that pre-forming wedge on the bottom of part is suitable.The distributing temperature in the part and forming force,which could make certain the forming temperature and select equipment were also analyzed.The comparison between simulation and experimentation result shows that they are accorded with each other.

Funds：

上海市教委科技基金资助项目(04NB14)

Reference：

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