Transactions of Materials and Heat Treatment

Title：Stampingforging compound forming process of step hole

Authors： Yang Cheng Liang Fan Yang Xinyi Xie Xiaodong Piao Yongri

Unit： Xi′an University of Architecture and Technology Guangdong Hehe Construction Hardware Manufacturing Co. Ltd.

KeyWords： step hole stampingforging compound forming onestep stampingforging method forgingstamping method stampingforgingstamping method finite element method

ClassificationCode：TG316

year,vol(issue):pagenumber：2018,43(10):22-29

Abstract：

In order to obtain step hole, based on the stampingforging compound forming technology, three kinds of forming methods for step hole were put forward, namely, onestep stampingforging method, forgingstamping method and stampingforgingstamping method, and their strokeload curve, equivalent stress and strain distribution and material flow law were obtained by finite element simulation respectively. The results show that when the step hole is produced by the stampingforgingstamping method, the maximum load is 85818N, which is 20% smaller than that produced by the onestep stampingforging method and 16% smaller than that produced by the forgingstamping method. The deformation is more uniform under the equivalent stress range of 350-1120 MPa, the material outward flow displacement in the upper right angle of the step hole is 0.3 mm, and the width of workpiece increases 0.3 mm, which are smaller than these produced by the onestep stampingforging method and the forgingstamping method. Thus, according to the simulation results, the forming experiment is conducted by the stampingforgingstamping method, and the step hole with qualified size and uniform deformation is obtained.

Funds：

陕西省教育厅专项（16JK1462）；陕西省耐磨材料工程技术研究中心专项（2016NMZX07）

杨程（1976-），男，博士，副教授，E-mail：yang.cheng@stu.xjtu.edu.cn

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