ER70S-6盘条拉拔断裂分析  

Analysis on Fracture during ER70S-6 Wire Rod Drawing

作　　者：王晓华[1] 关玉佐[1] 孙孝男 张利红 

机构地区：[1]唐钢技术中心 [2]唐钢金恒公司 [3]唐山煤气公司

出　　处：《天津冶金》2002年第6期26-27,共2页Tianjin Metallurgy

摘　　要：对ER70S-6气保焊丝钢在拉拔过程中的断裂问题进行分析。通过对化学成分、力学性能、金相组织、夹杂物与表面缺陷、晶粒度的检验,认为断裂是由于成分不稳定、冷速过快、吐丝温度高及夹杂物造成的。The fracture during ER70S-6 wire rod drawing of gas shield welding wire steel is analysed. The testing of chemical composition, mechanical property,microstructure,inclusion content and surface defect and grain fineness shows the fracture is resulted from the changing of composition,cooling speed,loop laying temperation and inclusion content.

关 键 词：ER70S-6盘条 气保焊丝钢 铁素体 晶粒度 夹杂物 拉拔 断裂 

分 类 号：TG356[金属学及工艺—金属压力加工]