Transactions of Materials and Heat Treatment

Title：Plastic forming simulation calculation of upsetting and punching for steel ingot

Authors： Su Fang1 2 Wang Yong1 2 Xue Feng1

Unit： 1.Technology Center Taiyuan Heavy Industry Co. Ltd. 2. Technology Center TZ (Tianjin) Binhai Heavy Machinery Co. Ltd.

KeyWords： plastic forming upsetting punching rigid-viscoplastic finite element forging temperature

ClassificationCode：TG375；TG306

year,vol(issue):pagenumber：2024,49(8):6-12

Abstract：

In order to simulate the plastic forming process of upsetting and punching for 42CrMo steel ingot with the weight of 5×104 kg accurately, the treatment methods of geometric similarity condition, mechanical similarity condition, physical similarity condition and friction condition for plastic deformation in finite element forming simulation were discussed, and the main factors affecting the simulation calculation of plastic forming such as anvil speed, material autologous characteristic, deformation time, temperature and friction condition were summarized. Then, the proper calculation element, material characteristic parameters, friction treatment method and heat exchange coefficient of 42CrMo steel ingot in the simulation of upsetting and punching process were proposed and verified by the existing press of 20 MN. Furthermore, the upsetting and punching process of 5×104 kg steel ingot formed by one fire with the forming forces of 200, 250 and 300 MN were simulated respectively, and the simulation results of upsetting and punching under different forming forces were listed. The results obtain the correlation of billet forming state with forming force and forming time, which provides the technical support for the design and manufacture of press.

Funds：

天津市科技领军（培育）企业认定及支持项目(20YDLZGX00290)；天津市“项目+团队”重点培养专项（XC202050）

作者简介：苏芳(1985-)，女，硕士，高级工程师 E-mail：sufang@tz.com.cn

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