摘要
以S355J2W钢作为试验材料,在不同电流密度下进行材料的自阻加热成形试验,以确定最佳的自阻加热电流密度。利用MSC. Marc有限元模拟软件对转向架盖板自阻加热时的温度场进行模拟,确定最佳加热方式,并进行转向架盖板的成形试验。通过对比室温成形工艺与自阻加热成形工艺,结果表明,与室温成形工艺相比,通过自阻加热成形工艺可显著减小零件回弹,提高零件的成形性能,同时消除冷成形带来的诸多组织缺陷。其中成形件的抗拉强度最大可提高13. 7%,伸长率最大可提高23. 7%,从而改善S355J2W钢转向架盖板的成形质量。
S355J2W steel was used as the test material,and the self-resistance heating forming test was carried out under different current densities to determine the optimal self-resistance heating current density. The MSC. Marc finite element simulation software was used to simulate the temperature field of the bogie cover during self-resistance heating,the optimal heating method was determined and the forming test of the bogie cover was carried out. By comparing the process of room temperature forming with that of self-resistance heating forming,the results show that compared with the room temperature forming process,the self-resistance heating forming process can significantly reduce the springback of parts,improve the forming performance of parts,and eliminate microstructure defects caused by cold forming. The tensile strength of the formed parts can be increased by 13. 7% and the elongation can be increased by 23. 7%,so as to improve the forming quality of the S355J2W steel bogie cover.
作者
何广忠
吴越
梁继业
王国峰
张靖轩
HE Guang-zhong;WU Yue;LIANG Ji-ye;WANG Guo-feng;ZHANG Jing-xuan(China Zhongche Changchun Bus Track Co.,Ltd.,Changchun 130000,China;State Key Laboratory for Precision Hot Precision of Metals,Harbin Institute of Technology,Harbin 150001,China)
出处
《塑性工程学报》
CAS
CSCD
北大核心
2020年第2期29-36,共8页
Journal of Plasticity Engineering
基金
国家自然科学基金资助项目(51875122)。
关键词
S355J2W钢
自阻加热成形
有限元模拟
回弹
质量分析
S355J2W steel
self-resistive heating forming
finite element simulation
springback
quality analysis
