Transactions of Materials and Heat Treatment

Title：Application of Vague set in ironing process parameter optimization of C15 stainless steel

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ClassificationCode：TG376

year,vol(issue):pagenumber：2023,48(1):115-120

Abstract：

Finite element simulation of ironing process for C15 stainless steel was carried out in Simufat. forming software. Taking ironing rate, concave mold cone angle and ironing speed as the process parameter variables, L9(33) orthogonal experiment with three factors and three levels was designed. Taking ironing force, residual stress and wall thickness springback amount as the evaluation indexes of forming quality, the variation coefficient method was adopted to objective weight distribution of three evaluation indexes. The Vague set was introduced to the orthogonal test results for multi-objective optimization, the optimal combination of process parameters and the influence order of each process parameter on the comprehensive evaluation index were obtained. The results show that when the ironing rate is 42%, the concave mold cone angle is 9° and the ironing speed is 10 mm·s-1, the forming quality of C15 stainless steel ironing workpiece is higher. The influence order of process factors on comprehensive forming quality for ironing parts is as follows: ironing speed > ironing rate >concave mold cone angle. The maximum relative error (wall thickness springback amount) of the simulation and test results is not more than 7. 61%. The simulation results have good reliability, which can provide theoretical guidance for practical production.

Funds：

国家自然科学基金优秀青年科学基金资助项目(51422404); 山西省高等学校科技创新项目(2020L0683); 山西省高等学校教学改革创新项目(J20221165); 吕梁市重点研发项目(2021GXYF-2-60)

作者简介: 张辰锐(1988-), 男, 博士, 讲师 E-mail: zhangchenrui@ llu. edu. cn 通信作者: 李　辉(1985-), 男, 博士, 副教授 E-mail: 453943175@ qq. com

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