汽车车架用高强度钢板最小弯曲半径及冲压回弹规律研究  

Research on Minimum Bending Radius and Stamping Springback Law of High Strength Steel Plate for Automobile Frame

作　　者：李炳新 伍卫凯 张道达 陈汪林 LI Bingxin;WU Weikai;ZHANG Daoda;CHEN Wanglin(School of Electromechanical Engineering,Guangdong University of Technology,Guangzhou 510006,China;Jiangxi Academy of Mechanical Science,Nanchang 330002,China)

机构地区：[1]广东工业大学机电工程学院,广东广州510006 [2]江西省机械科学研究所,江西南昌330002

出　　处：《材料研究与应用》2022年第2期282-285,共4页Materials Research and Application

基　　金：广东省重点领域研发计划项目(2020B010185001);江西省科技厅重点研发技术项目(20212BBE53044);江西省科技厅计划项目(20202BBEL53025);南昌市模具表面处理与加工制造技术重点实验项目(2021-NCZDSY-003);江西省教育厅科学技术项目(GJJ161465)。

摘　　要：为解决QP-700新型高强度钢板在车架冲压成型过程中极易产生回弹而影响成型精度的问题,对比研究了在冲压成型过程中不同厚度的高强度钢板回弹和失效的情况。研究结果表明,QP-700新型高强度钢板回弹量随板材的厚度增加而减小,随弯曲半径的增加而增大。推导出QP-700高强度钢板最小弯曲半径的经验公式r_(min)=1.7t+4.6,该钢板最小相对弯曲半径为2.2。综上所述,通过冲裁试验可为高强度钢板的冲压成型提供理论指导。The QP-700 high-strength steel plate is prone to rebound during the stamping and forming process of the frame,which affects the forming accuracy.In order to solve the problem,a large number of experimental methods were used to stamp and form high-strength steel plates with different thicknesses,the rebound and failure of the samples were analyzed.The study shows that the rebound of QP-700 new highstrength steel plate decreases with the increase of plate thickness and increases with the increase of bending radius;the empirical formula for the minimum bending radius of QP-700 high-strength steel plate is derived as r_(min)=1.7t+4.6,the minimum relative bending radius of the steel plate is 2.2.It is shown that the stamping forming of high-strength steel plate provides theoretical guidance.

关 键 词：高强度钢板 弯曲半径 回弹 冲压 失效 

分 类 号：TG142.41[一般工业技术—材料科学与工程]