摘要
铁路轴承内圈小端在淬火后出现锥度,此现象与内圈的壁厚有关。对比各种不同壁厚的内圈淬火后的变化情况,对于GCr20Ni2MoA钢,当内圈内径与小端厚度之比≥15:1且内圈小端厚度≤8 mm时,相变应力将大于材料本身的屈服强度,导致小端锥度发生变形。
Taper appears at the small end of railway bearing inner ring after quenching,it is related to the wall thickness of inner ring.Through contrasting in the change of different thickness of inner rings after quenching,the phase transformation stress will more than the yield strength metarial for GCr20Ni2 MoA steel,when the ratio of inner diameter and thickness is ≥15：1 and thickness of small end of inner ring is≤8 mm,and taper deformation occurs at the small end of inner ring.
出处
《热处理技术与装备》
2014年第5期16-18,共3页
Heat Treatment Technology and Equipment
关键词
薄壁
内圈
变形
thin-wall
inner ring
deformation
