HRB400破料原因分析

Cause Analysis of HRB400 Breaking

盘螺生产过程中经常会出现破料现象,为分析其产生原因,采用化学分析、宏微观检验等方法进行了分析。结果表明,横截面裂纹附近存在脱碳、晶粒长大现象且在裂纹中有氧化物存在。另外,在破料起始位置存在较多Si、Ca、Na、Al、Mg等保护渣成分。

In order to analyze the causes of the broken materials,the methods of chemical analysis,macro and micro inspection are used.The results show that decarburization,grain growth and oxide exist in the cracks.In addition,there are more Si,Ca,Na,Al,Mg and other components in the starting position of the breaker.