摘要
通过总结分析ER70S-6焊丝钢存在的质量问题,提出了有针对性的优化改进措施,重点对ER70S-6焊丝钢的化学成分范围、气体氮含量、尺寸精度、显微组织等关键指标严格控制,攻关后C、Si、Mn、N含量内控达标率提高,尺寸偏差C级精度得到改善,而且消除了混晶异常组织。用户拉拔使用结果表明,优化后的焊丝钢质量得到进一步的提高,可满足用户拉拔速度28 m/s以上高速拉拔的要求。
The targeted optimization and improvement measures are proposed by summarizing and analyzing the existing quality problems of ER70S-6 welding wire steel.The emphasis is strictly controlling such key indicators as chemical composition range,gaseous nitrogen content,dimensional accuracy and microstructure of ER70S-6 welding wire steel.After tackling the problems,rates of reaching the standard for internal control of C,Si,Mn,and N contents are improved,class C accuracy of dimensional deviation is improved as well as abnormal duplex grain structure is eliminated.The drawing results of users showed that the quality of optimized welding wire steel were further improved,which could meet the requirements of high speed drawing with drawing speed of over 28 m/s.
作者
赵晓敏
罗海炯
王刚
李学东
白彬亨
Zhao Xiao-min;Luo Hai-jiong;Wang Gang;Li Xue-dong;Bai Bin-heng(Technical Center of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China;Manufacturing Dept.of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China)
出处
《包钢科技》
2024年第1期65-69,共5页
Science & Technology of Baotou Steel
关键词
ER70S-6焊丝钢
氮含量
尺寸精度
高速拉拔
ER70S-6 welding wire steel
nitrogen content
dimensional accuracy
high speed drawing
