Transactions of Materials and Heat Treatment

Title：Hot gas hydro-forging process of combined camshaft

Authors： Zhang Chuangchuang Li Hang Chu Guannan

Unit： Harbin Institute of Technology(Weihai) Harbin Institute of Technology-Weihai Innovation Park Co. Ltd.

KeyWords： combined camshaft hot gas hydro-forging static torsion strength internal pressure axial feeding amount

ClassificationCode：TG39

year,vol(issue):pagenumber：2021,46(4):0-0

Abstract：

For the technical status of difficulty in forming the combined camshaft, a process scheme of forming the combined camshaft by hot gas hydro-forging was put forward. The hot gas hydro-forging process of combined camshaft was numerically simulated by finite element software ABAQUS, and the influence laws of inclination of cam end face, inclined length of insert, forming temperature, internal pressure and unilateral axial feeding amount on the forming quality were studied. The results show that when the inclination of cam end face decreases and the inclined length of insert increases, it is beneficial to the filling of outer wall for shaft tube and cam, and the filling effect is the best when the forming temperature is 850 ℃. With the increasing of internal pressure and axial feeding amount, it is beneficial to fill the outer wall of shaft tube and cam, and the inner wall of shaft tube is also fold. The experimental results prove the feasibility of hot gas hydro-forging process and the correctness of numerical analysis by design tooling, and the static torsion strength of combined camshaft formed by the hot gas hydro-forging process completely conforms to the requirements of camshaft.

Funds：

国家基金委航天联合基金重点项目(U1937205)；国家自然科学基金面上项目 (51475121)；山东省重大科技创新工程（2019TSLH0103）

张闯闯(1997- )，男，硕士研究生 E-mail：15634350564@163.com 通讯作者：初冠南(1979- )，男，博士，教授 E-mail：chuguannan@hit.edu.cn

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