AM3锚链钢开裂原因分析  

Causes Analysis on Cracking of Anchor Chain Steel AM3

作　　者：李道辉 

机构地区：[1]科技质量部

出　　处：《南钢科技与管理》2015年第1期16-18,共3页NISCO Technology and Management

摘　　要：通过对AM3锚链钢进行裂纹形貌、金相组织与夹杂物及低倍的检验和分析,结果表明,锚链的开裂是由于连铸方坯中的细小热应力裂纹造成的,带细小热应力裂纹的方坯经过加热炉较高温度长时间保温,导致空气中的氧沿细小裂纹渗入到基体内部,从而造成轧制后出现宏观裂纹。By testing and analyzing the morphology,metallographic structure,inclusion and low magnitude of cracking,the result showed that fine thermal stress cracks in continuous casting billet cause cracking of anchor chain steel. The billets with fine thermal stress crack were in BF high temperature for a long time,which has led to oxygen in air penetrating the inner along fine crack. Macroscopic crack appeared after rolling.

关 键 词：AM3锚链钢 裂纹 检验分析 

分 类 号：TG146.21[一般工业技术—材料科学与工程]