Q345GJB高强钢拉延弯曲回弹激光扫描测试分析  

Laser scanning test and SA prediction for drawing bending rebound of Q345GJB structural steel

作　　者：徐勇光 XU Yongguang(College of Automotive and Mechanical Engineering,Zhoukou Vocational and Technical College,Zhoukou 466000,Henan China)

机构地区：[1]周口职业技术学院汽车与机电工程学院,河南周口466000

出　　处：《锻压装备与制造技术》2024年第5期88-90,共3页China Metalforming Equipment & Manufacturing Technology

摘　　要：针对高强钢成形中的弯曲回弹问题,构建Draw-bending弯曲回弹测试平台,采用激光扫描方式对比不同圆辊半径和张紧力条件下Q345GJB高强钢回弹测试结果。研究结果表明:当弯曲半径保持不变时,提高张紧力后回弹角减小;当张紧力保持恒定时,随着弯曲半径增加回弹角持续减小。张紧力提高后形成了更小圆辊弯曲半径的结果,特征部位厚度和截面半径都呈现降低的变化趋势。该研究有助于提高成形工艺效率,为后续参数优化奠定一定的理论基础。With the high load operation of the mechanical transmission system,the performance of high-strength steel has been put forward to better requirements,and its flexural resilience is one of the factors that cannot be ignored in the processing process.The Draw-bending bending springback test platform was constructed and the springback test results of Q345GJB high strength steel under different roll radius and tensioning force were compared by laser scanning method.The results show that when the bending radius remains unchanged,the rebound Angle decreases with increasing the tension force.When the tension force remains constant,the rebound Angle decreases continuously with the increase of bending radius.With the increase of tensioning force,the bending radius of the roller is smaller,and the thickness and section radius of the characteristic parts show a decreasing trend.The research is helpful to improve the working efficiency of bending machine in the field of forging and laying a certain theoretical basis for the subsequent parameter optimization.

关 键 词：Q345GJB高强钢 弯曲 回弹 张紧力 屈服准则 激光扫描 

分 类 号：TB125[理学—工程力学] TG386.32[理学—力学]