球磨机ZGMn13衬板的失效分析  

Failure Analysis of ZGMn13 Liner Used in Ball Mill

作　　者：钱建国[1] 

机构地区：[1]陕西工业职业技术学院材料工程学院,陕西咸阳712000

出　　处：《铸造技术》2012年第6期680-681,共2页Foundry Technology

摘　　要：采用化学成分分析、金相检验等方法,对高锰钢衬板在使用中的碎裂进行分析。分析表明,衬板中存在严重的疏松,晶界上有大量未溶块状碳化物并析出针状碳化物以及球状氧化物;热处理工艺不当、铸造疏松以及非金属夹杂物的超标是导致球磨机衬板早期失效的主要原因,并提出了改进措施。The fragmentation of high-manganese steel liner in use was analyzed by chemical composition analysis, metallographic examination and other methods. The results show that the severe loose exists in the liner, large amount of undissolved massive carbides exist in grain boundary and the needle-like carbides and globular oxides precipitate in the microstructure. The main cause of early failure of the liner is the improper heat treatment, casting loose and non-metallic inclusions. An improved method is put forward.

关 键 词：球磨机衬板 铸造缩松 非金属夹杂物 碳化物 

分 类 号：TQ172.63[化学工程—水泥工业]