| 进口E52100轴承钢盐浴热处理、磨削后表面出现凹坑原因分析 |
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| 引用本文： | 孟安发,薛亚军,戴彤孚.进口E52100轴承钢盐浴热处理、磨削后表面出现凹坑原因分析[J].理化检验(物理分册),2011(4):257-260. |
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| 作者姓名： | 孟安发 薛亚军 戴彤孚 |
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| 作者单位： | 南京金联安冶金机电有限公司;南京工程学院材料学院材料实验中心;南京工业大学电光源材料研究所; |
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| 摘 要： | 由美国进口牌号为E52100、线径为φ1.6mm的轴承钢盘圆,加工成小型精密轴承零件,经中性盐浴热处理并在圆端面磨削到成品要求后,被磨削的表面出现了极细小的黑色凹坑,凹坑数量及位置无规律可循。经光学显微镜和扫描电镜观察及X射线能谱分析后发现,在E52100轴承钢材料基体内部存在着大小不等、形状各异、位置不确定的异常组织颗粒,这些颗粒均含有较高含量的氧元素,为氧化物夹杂;在磨削过程中,这些硬而脆的氧化物颗粒极易从基体中剥落而出现凹坑;这些非金属氧化物夹杂是轴承钢材料中原有的,与盐浴热处理无关。
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| 关 键 词： | E521000轴承钢 盐浴热处理 磨削 表面凹坑 氧化物夹杂 |
Cause Analysis on Surface Pits of Imported E52100 Bearing Steel after Salt Bath Heat Treatment and Grinding |
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| MENG An-fa,XUE Ya-jun,DAI Tong-fu.Cause Analysis on Surface Pits of Imported E52100 Bearing Steel after Salt Bath Heat Treatment and Grinding[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2011(4):257-260. |
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| Authors: | MENG An-fa XUE Ya-jun DAI Tong-fu |
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| Affiliation: | MENG An-fa~1,XUE Ya-jun~2,DAI Tong-fu~3 (1.Nanjing Jinlian'an Mechano-electronic & Metallurgical Co.,Ltd.,Nanjing 210032,China,2.Center of Material Testing,Department of Material,Nanjing Technical College,Nanjing 211167,3.Research Institute of Materials for Electric Light Source,Nanjing University of Technology,Nanjing 210015,China) |
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| Abstract: | Little black surface pits were found on the surface of minor precision bearing parts which made of E52100 bearing steel disk with diameter of 1.6 mm and imported from USA after neutral salt bath heal treatment and finishing mill,and there was no regularity for number and position of the surface pits.Formation reason for the pits was studied by means of optical microscope,scanning electron microscope and X-ray energy dispersive spectrometer.The results show that there were many abnormal granular particles wi... |
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| Keywords: | E52100 bearing steel salt bath heat treatment grinding surface pit oxide inclusion |
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