轴承外圈端面磁痕分析
Heat Treatment Technology and Equipment（2018）
Abstract
磁粉探伤工序发现轴承外圈端面存在大量的短磁痕,采用低倍检查、金相检验、断口扫描电镜观察等方法对磁痕缺陷产生的原因进行了分析及确认.结果表明:磁痕处存在孔洞缺陷,经检测同批次原材料棒料试样,发现了孔洞缺陷;该孔洞不同于过烧所致的孔洞,依据孔洞形貌特点,应为原材料显微孔隙.因此原材料显微孔隙导致了磁痕的形成.
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