Transactions of Materials and Heat Treatment

Title：Research and optimization on cold forming process for vehicle flange connected part

Authors：

Unit：

KeyWords： flange connected part cold upsetting extrusion load orthogonal test Deform-3D

ClassificationCode：TG386.1

year,vol(issue):pagenumber：2021,46(6):106-111

Abstract：

For a vehicle flange connected part, a multi-station forming process of drawing, punching, flanging and cold upsetting extrusion was proposed based on the structure, and the cold upsetting extrusion station was simulated and analyzed by the finite element software Deform-3D. Then, three schemes of blanks with different structures were designed, and based on the numerical simulation results, the best forming scheme was obtained, that is, the taper blank was used. Furthermore, in order to obtain the optimal process parameters of cold upsetting extrusion, taking the minimum value of load for upper punch, fixed block and die as the optimization objectives, four factors and three levels orthogonal test table on die fillet radius, friction coefficient, upsetting extrusion speed and fixed block fillet radius were established, and the key degree of each test factor was analyzed by combining finite element method. The optimal upsetting extrusion process parameters of the flange connected part were obtained by range analysis with the die fillet radius of 8 mm, the friction coefficient of 0.1, the upsetting extrusion speed of 30 mm·s-1, and the fixed block fillet radius of 6 mm. Finally, through the actual trial production, the flange connected parts that meet the requirements were obtained, and the feasibility of the scheme was verified.

Funds：

邱尚磊（1985-），男，学士，讲师 E-mail：2703637338@qq.com

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