Transactions of Materials and Heat Treatment

Title：Optimization on die structure with high efficient and uniform heat transfer for creep aging of large tank wall panels

Authors： Wang Jianguang1 Gong Jixiang1 Li Xiaokai1 Hu Lan1 Zhang Song1 Wang Zili2 Yang Youliang2 Xu Lingzhi2 Zhan Lihua2

Unit： 1. Shanghai Aerospace Equipment Manufacturing Co. Ltd. 2. Light Alloy Research Institute Central South University

KeyWords： creep aging forming die temperature field tank wall pands temerature uniformity

ClassificationCode：TG76

year,vol(issue):pagenumber：2022,47(9):196-202

Abstract：

The heating with high-efficiency and uniformity of die surface has an important influence on the forming efficiency and forming accuracy of creep aging for tank wall panels. Therefore, for the frame die of tank wall panels, the temperature field of die for wall panels during creep aging process was simulated by software Fluent, and according to the data of die temperature field and the verification result of strength, the die structure was optimized in order to improve the high-efficiency and uniformity of die surface heating. The results show that before the optimization of die structure, the temperature field of die presents a stepped distribution, the maximum temperature difference in die surface position is 25 ℃, there is the slowest heating area (SHA), and the die weight is 2414.5 kg. However, after the optimization of die structure, under the condition that the equivalent stress and overall deformation are within a safe range, the heating rate of die is significantly increased, the maximum temperature difference in die surface position is reduced to 15 ℃ with a decrease of 40%, the temperature distribution is more uniform, the slowest heating area disappears, and at the same time, the die weight is decreased by 17%. Thus, this research work provides theoretical support for the optimal design on die with high-efficient and uniform heat transfer for creep aging.

Funds：

上海市技术带头人计划（21XD1431800）

王建光（1986-），男，硕士，高工 E-mail：501204510@qq.com 通信作者：湛利华（1976-），女，博士，教授 E-mail：yjs-cast@csu.edu.cn

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