Stretch bending defect control of L-section SUS301L stainless-steel components with variable contour curvatures
作者机构：Department of Materials Science and EngineeringJilin UniversityChangchun 130022JilinChina Roll Forging Research InstituteJilin UniversityChangchun 130022JilinChina
出 版 物：《Journal of Iron and Steel Research International》 (J. Iron Steel Res. Int.)
年 卷 期：2019年第26卷第12期
页 面：1376-1384页
核心收录：
学科分类：08[工学] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）]
基 金：the National Natural Science Foundation of China(51101072) Technology Development Program of Jilin Province(20150307015GX and 20160204058GX)
主 题：Stretch bending L-section Variable contour curvature Stainless-steel profile Defect control
摘 要：The stretch bending of L-section variable-curvature SUS301L stainless-steel roof bending beams for metro vehicles was numerically *** causes of defects such as wrinkling,section distortion,and poor contour accuracy were analysed,and the corresponding control methods were *** simulation results demonstrated that wrinkling in the small-arc segment could be eliminated by setting the die clearance and adjusting the elongation *** to the sidewall shrinkage of the profile in the process of stretch bending,the die groove depth was correspondingly *** section of the profile was effectively supported by the bottom of the die groove,and the section distortion could be *** was the main reason for the poor contour accuracy,which could be compensated by modifying the die surface based on the springback *** the above defect control methods,forming experiments were performed on a new type of stretch bending die with variable die clearance and groove depth developed in this ***,high-quality components were obtained,which verified the efficacy of the defect control methods.
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