Transactions of Materials and Heat Treatment

Title：New deep drawing method for titanium alloy high square box parts

Authors： Li Tao Yuan Qinfeng Wang Yihua

Unit： Zhejiang Shenji Taiye Industry Co. Ltd.

KeyWords： deep drawing high square box part die punch strength stress strain fracture

ClassificationCode：TP391.7

year,vol(issue):pagenumber：2022,47(5):116-120

Abstract：

In order to solve the problems of low forming efficiency and high production cost for high square box parts，a new forming process of conical and square combined die forming process was proposed. The deep drawing process of high square box part for sheet metal was simulated by using Qform2D/3D and V7 in the traditional radial die and the new process of conical and square combined die respectively，and the specification of force and the stress-strain state were studied according to the M-K instability criterion and Hill48 criterion damage evaluation. For the deep drawing of high square box part, the analysis results show that the average stress of deep drawing with the traditional radial die is 10% larger than that with the conical and square combined die, and the average strain with the conical and square combined die is 16% smaller than that with the radial die at the maximum deformation position. The deformation uniform is improved by the new forming process. Meanwhile，when the blank holder is used in the combined die of sheet, the combined die with only one conical section and one square section is needed to form a high square box part in one step，and under the condition without blank holder，the high square box part can be formed by the combined die with two conical sections and one square section in one step. Thus,the above research results create conditions for eliminate the intermediate annealing process in the deep drawing process for similar parts and realize automatic production line.

Funds：

作者简介：李涛（1970-），男，学士，工程师，E-mail：doudou060119@qq.com

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