高线生产Q235线材拉断堆钢原因分析

Causes Analysis on Q235 Wire Rod Break During High Speed Rolling

通过高温塑性测定、金相检验及扫描电镜分析,对高线生产Q235线材期间拉断事故进行分析。结果表明,是由于连铸坯卷渣割裂基体造成的,建议更换保护渣后问题得到解决。

The Q235 wire rod break during high speed wire rolling was analysed by means of metallographical examination,electron microscope observation and SEM.The results indicate that the cause of the trouble is casting powder engulfed into the steel resulting in matrix cut apart.The problem is solved after replacing the casting powder.