34CrMo4气瓶钢表面裂纹原因分析  

Analysis of Suface Cracks on Gas Cylinder of 34CrMo4 Steel

作　　者：陈容[1] 吴安术[1] 赵骏[1] 陈义[1] 

机构地区：[1]攀钢集团研究院有限公司钒钛资源综合利用国家重点实验室,四川攀枝花617000

出　　处：《物理测试》2013年第2期53-55,共3页Physics Examination and Testing

摘　　要：采用金相、扫描电镜等分析了34CrMo4气瓶钢表面裂纹的形貌特征和产生原因,结果表明:表面裂纹是瓶体表面在淬火介质中冷却不均匀而形成的淬火裂纹。采用等温淬火或压缩气体淬火,可以降低淬火应力,能有效地减少表面裂纹的产生。The surface cracks of 34CrMo4 steel gas cylinder were studied by microstructure observation and electron microscopy analysis to reveal the characteristics and causes of crack.The results show that the surface cracking was quenching crack caused by uneven cooling in the quenchant.It is effective to reduce queching strees,thus reducing suface cracks by austempering or compressed air quenching.

关 键 词：气瓶钢 淬火裂纹 冷却不均 

分 类 号：TG142.15[一般工业技术—材料科学与工程]