Transactions of Materials and Heat Treatment

Title：Influence of mold loading mode on closed forging process for transmission spiral bevel gear

Authors： Xu Wei Wan Yi Sha Xinmei

Unit： 1. School of Mechanical and Electrical Engineering Sanjiang University 2. School of Environmental Science Nanjing Xiaozhuang University

KeyWords： closed forging loading mode spiral bevel gear metal flow temperature mold load

ClassificationCode：TG315.2

year,vol(issue):pagenumber：2022,47(6):75-80

Abstract：

There are usually multiple moving molds in closed forging. Therefore, the loading mode between moving molds is one of the important factors affecting forgings quality. In closed forging process of spiral bevel gears, there were defects such as low mold life and insufficient filling of forgings. For this problem, a moving mold was added on the basis of original mold structure, and the closed forging process of spiral bevel gear was modeled and simulated by finite element software Deform-3D. Furthermore, the influences of four loading schemes of upper and lower punches on forgings quality and mold were studied, and the flow and filling law of material, the temperature distribution law of forgings and the variation law of mold load were analyzed respectively. The results show that the forgings with good quality can be obtained by adopting the improved mold structure, and the defects of insufficient filling can be eliminated. Meanwhile, the forgings with better quality and mold with longer life can be obtained by adopting the third loading scheme.

Funds：

江苏省高等学校自然科学研究项目（19KJB460006，17KJB460011）；三江学院机械与电气工程学院“136工程”科研项目（21SJJD001）

徐伟（1982-），男，学士，高级实验师 E-mail：xu_wei@sju.edu.cn 通信作者：万轶（1982-），女，博士，副教授 E-mail：yiwan@njxzc.edu.cn

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