摘要
ER70S-6焊丝钢盘条在精拉过程中出现断裂,对盘条进行了微观组织观察。结果表明:盘条拉拔断裂是由于拉拔过程中异常组织不能与珠光体+铁素体组织协同变形导致裂纹产生,继而扩展断裂。通过控制连铸过程中的成分偏析以及优化轧制过程中的控轧控冷工艺,异常组织得到了有效控制。
ER70S-6 welding wire rod broke during the fine drawing process. The microstructure of the wire rod was observed. The results showed that the drawing fracture of wire rod was caused by the abnormal microstructure, which could not deform synergistically with the pearlite + ferrite microstructure in the drawing process. Therefore, the cracks propagated and the fracture was caused. By controlling the segregation of components in the continuous casting process and optimizing the controlled rolling and controlled cooling process in the rolling process, the abnormal microstructure had been effectively decreased.
作者
曹磊
郭峰
纪文杰
CAO Lei;GUO Feng;JI Wenjie(Steel Rolling Mill,Jiangsu YongGang Group Co.,Ltd.,Zhangjiagang 215628,China;R&D Department,Jiangsu YongGang Group Co.,Ltd.,Zhangjiagang 215628,China)
出处
《物理测试》
CAS
2022年第6期46-50,共5页
Physics Examination and Testing
关键词
ER70S-6
焊丝钢
拉拔断裂
成分偏析
异常组织
ER70S-6
welding wire steel
drawing fracture
component segregation
abnormal microstructure
