Transactions of Materials and Heat Treatment

Title：Forming process of curved revolving parts

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ClassificationCode：TG312

year,vol(issue):pagenumber：2021,46(3):131-137

Abstract：

The mechanical analysis of the forming process for curved revolving parts was carried out，and a calculating formula suitable for the necking forming force of large cone parts was obtained. Then, according to the critical instability pressure, the structural parameters were optimized to obtain the best generatrix radius and reverse bending radius of necking die, and the orthogonal test was conducted by the obtained optimal radiuses. Furthermore, the three process parameters including extrusion temperature, extrusion speed and friction coefficient of extrusion process were optimized, and the optimum parameters were obtained. Finally, in order to verify the accuracy of the theoretical data, it was verified by physical test. The results show that when the extrusion temperature is 460 ℃, the extrusion speed is 5 mm·s-1, and the friction coefficient is 0.2, the minimum forming load of part is 4013 kN, and the errors between simulation and theoretical results is less than 10%, which shows the feasibility of forming scheme and provides theoretical support for the future formation of such parts.

Funds：

山西省自然科学基金资助项目（201801D121106）

高畅（1995-），女，硕士研究生 E-mail：gaochang0827@163.com 通讯作者：李国俊（1969-），男，硕士，教授级高工 E-mail：liguojun@126.com

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