9Cr2Mo钢转向辊调质开裂原因分析  

Analysis on Cracking Reason of Deflector Roller of 9Cr2Mo Steel after Quenching and Tempering

作　　者：陈清 刘慧峰[2] 

机构地区：[1]常州宝菱重工机械有限公司,常州213019 [2]宝钢集团常州轧辊制造公司,常州213019

出　　处：《理化检验（物理分册）》2012年第3期185-186,206,共3页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：通过化学成分分析、宏观和微观检验对9Cr2Mo钢辊身近端部纵向开裂的原因进行了分析。结果表明:材料化学成分超标、内裂纹的存在、原始组织晶粒粗细差异都对裂纹的形成产生了直接影响。最后根据分析结果制订了改进措施。The longitudinal cracking at the end of 9Cr2Mo steel deflector roller was analyzed by means of chemical composition analysis, macro and micro examination. The results showed that the main reasons included carbon and silicon content exceeded the standard limit of 9Cr2Mo steel, internal crack and the different size of origi- nal grain existed. At last improvement measures for the deflector roller is made based on the analysis results.

关 键 词：9CR2MO钢 转向辊 开裂 热处理 

分 类 号：TG157[金属学及工艺—热处理]