Transactions of Materials and Heat Treatment

Title：Robust design optimization on wall thickness deviation for power spinning based on satisfaction function

Authors： Yang Feng Li Rui Zhu Lijian Zhang Jian Zhao Yidong Du Changlin

Unit： Shanghai Xinli Power Equipment Research Institute

KeyWords： power spinning satisfaction function wall thickness deviation response surface 30Cr3 high strength steel

ClassificationCode：TG376

year,vol(issue):pagenumber：2021,46(2):130-135

Abstract：

In order to improve the stability of forming quality for power spinning cylinder and obtain a spinning cylinder with the more stable overall dimensional accuracy, the power spinning was numerically simulated by finite element software Simufact.forming. Then, taking 30Cr3 high strength steel as the spinning material, the optimized process parameters were thinning ratio, feeding rate and axial offset, and the optimization target was the wall thickness deviation of spinning cylinder. Furthermore, the traditional double response surface was improved by introducing entropy weight theory, and a better satisfaction function was designed for the robust optimization design on the wall thickness deviation of power spinning cylinder. Finally, the GRG method was applied to solve the satisfaction function to obtain the power spinning optimization parameters with the stable wall thickness. The results show that when the thinning ratio is 57.8%, the feeding rate is 1.232 mm·s-1, and the axial offset is 3.57 mm, the average deviation value of wall thickness for spinning cylinder is 0.051 mm, the standard deviation is 0.0172 mm, and the satisfaction function value is 0.8218. At this time, the wall thickness of spinning cylinder is closer to the nominal value, and the overall wall thickness is more uniform. Through the test verification of finite element simulation, the relative error is smaller, the reliability performance is good, and it has great guiding significance for spinning process.

Funds：

杨锋（1993-），男，硕士，助理工程师，E-mail：122297706@qq.com

Reference：

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