Transactions of Materials and Heat Treatment

Title：Simulation analysis on 304 austenite stainless steel for new extrusion mold

Authors： Duan Hongyan Wang Liwen Sun Xiuqing

Unit： Lanzhou University of Technology

KeyWords： equal channel angular pressing extrusion mold 304 austenite stainless steel load curve equivalent stress equivalent strain

ClassificationCode：TG376

year,vol(issue):pagenumber：2020,45(2):159-166

Abstract：

Three dimensional finite element simulation of 304 austenite stainless steel was conducted by using three kinds of new equal channel angular pressing molds and combining with the existing research on equal channel angular pressing, and the change of load curve and the distributions of equivalent stress and equivalent strain in the extrusion process were studied. The results show that the change of extrusion mode does not affect the load of punch. At the same time, compared with the equivalent stress and equivalent strain of mold under three different extrusion modes, it is found that the equivalent stress value of equal channel angular pressing mold with rotating 90° is the smallest to obtain the smallest probability of hair drawing at the rotation angle, the mold damage is the smallest, and the equivalent strain value is maximum to cause the refinement effect. Finally, the strain point tracking diagram is drawn by means of point tracking to expound intuitively the equal channel angular pressing mold with rotating 90° process to have more practical value, which also provides theoretical support for the development of practical equal channel angular pressing mold design in the future.

Funds：

地区科学基金项目资助(51665028)

段红燕（1978-），女，博士，副教授，E-mail：duanhy@lut.cn；通讯作者：王丽文（1990-), 男，硕士研究生，E-mail：872835656@qq.com

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