Transactions of Materials and Heat Treatment

Title：A kind of combined mold on improving material utilization rate for long shaft steering knuckle forgings

Authors： Chen Tianfu Qu Zhiyuan Zhou Jie Wu Jianxiang Wang Xi Wang Guowen Peng Haijun

Unit： Hubei Tri-ring Forging Co. Ltd. Chongqing University Chongqing Jiepin Technology Co. Ltd.

KeyWords： long shaft steering knuckle combined mold resistance wall billet positioning vertical forging process

ClassificationCode：TG31

year,vol(issue):pagenumber：2022,47(8):185-192

Abstract：

Aiming at the problems of difficult filling in the shaft of forgings and low material utilization rate in the vertical forging process for long shaft steering knuckle forgings, for a long shaft steering knuckle forgings, a new combined mold was proposed. In this mold，the billet was pre-separated in the upsetting process so that the projection of billet after upsetting fell into the cavity of billet-making mold, the billet-making and pre-forging molds adept a combined structure of resistance wall to improve the filling capacity of billet shaft, and the positioning structure of billet-making and final forging molds was designed to improve the positioning accuracy of billet. Combined with numerical simulation analysis technology, the forming performance of the new combined mold was simulated and analyzed, and the production test verified the feasibility of the new combined mold. The results show that the material weight is reduced from 47.7 kg to 42.9 kg by using the new combined mold, and the material utilization rate reaches 91%, which is 8% higher than the mold structure before optimization.

Funds：

国家自然科学基金资助项目（52075058）

作者简介：陈天赋（1976-），男，学士，高级工程师，E-mail：13871600196@139.com；通信作者：彭海军（1992-），男，硕士，助理工程师，E-mail：1342550938@qq.com

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