ER50-6焊丝镀铜表面发黑原因分析及改进  

Cause analysis and improvement of blackening on copper plating surface of ER50-6 welding wire

作　　者：蒋艳菊 Jiang Yanju(Benxi Beiying Iron and Steel(Group)Co.,Ltd.,Benxi 117017,China)

机构地区：[1]本溪北营钢铁(集团)股份有限公司

出　　处：《金属制品》2019年第6期16-19,共4页Metal Products

摘　　要：针对某批次ER50-6焊丝镀铜后部分表面发黑的问题,利用光学显微镜和扫描电镜及能谱仪分析正常试样和缺陷试样微观结构与元素组成,得出表面发黑是薄氧化铁皮机械除鳞未除净造成的。通过减少铸坯在炉时间及严格控制加热温度、提高除鳞水压力、微调吐丝温度等措施可显著改善缺陷产生。For the problem of blackening part of ER50-6 wire after copper plating,the microstructure and elemental composition of normal and defect samples were analyzed by optical microscope and SEM and energy spectrometer.The conclusion is that the blackening is caused by the mechanical descaling of thin iron oxide scale.By reducing the billet in furnace time,strictly controlling heating temperature,increasing descaling water pressure,fine-tuning spinning temperature and other measures can significantly reduce the occurrence of defects.

关 键 词：ER50-6 焊丝 镀铜 氧化铁皮 机械除鳞 

分 类 号：TG422.3[金属学及工艺—焊接]