高碳铬轴承钢加工件内部孔洞原因分析  

Cause analysis of internal hole in high carbon chromium bearing steel workpiece

作　　者：周苑 彭磊 陈廷军 Zhou Yuan;Peng Lei;Chen Tingjun(Zenith Steel Group Co.,Ltd.,Changzhou 213011,China)

机构地区：[1]中天钢铁集团有限公司,江苏常州213011

出　　处：《金属制品》2022年第5期50-52,共3页Metal Products

摘　　要：φ75 mm高碳铬轴承钢在加工过程中发现试样内部存在孔洞,通过宏观检验化学成分分析、金相检验及电镜分析等方法对内部孔洞原因进行分析。结果表明,高碳铬轴承钢加工试样孔洞缺陷可能为铸坯中的气孔缺陷轧制后遗留,并经后续加工拓展形成。Holes were found in sample of diameter 75 mm high carbon chromium bearing steel during processing.The causes of internal holes were analyzed by means of macro examination,chemical composition analysis,metallographic examination and electron microscope analysis.The results show that the hole defect of processed sample of high carbon chromium bearing steel may be the pore defect in billet left over after rolling and expanded by subsequent processing.

关 键 词：高碳铬轴承钢 内部孔洞 气孔缺陷 化学成分 

分 类 号：TG142[一般工业技术—材料科学与工程]