Transactions of Materials and Heat Treatment

Title：Crack analysis and process optimization of T-shaped arm forgings

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ClassificationCode：TG316.3

year,vol(issue):pagenumber：2020,45(1):15-21

Abstract：

To solve the crack problem near the end of straight hole for T-shaped arm forgings in actual production, the corresponding temperature field, equivalent strain field and velocity field were analyzed by numerical simulation, and it was believed that the high flow velocity with large gradient of material near the end of straight hole might be the main reason to crack. According to this, two improved schemes of the flash structure design with resistance groove and the forging die design of two-cavity were proposed. The results show that adding the resistance groove could effectively reduce the flow velocity of material for bridge flash at the end of straight hole, but it could not change the increasing trend of flow velocity. The process design of die with two-cavity could change the flow pattern of metal at the end of straight hole, improve the flow uniformity in the dangerous area and achieve a relatively homogeneous temperature field. The actual process experiment will be arranged in the future to carry out verification work.

Funds：

工业强基工程项目（TC180A3Y1/18）

作者简介：蔡佰煊(1996-)，男，硕士研究生 E-mail：caibaixuan@sjtu.edu.cn 通讯作者：胡成亮(1980-)，男，博士，研究员 E-mail：clhu@sjtu.edu.cn

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