| GCr15轴承钢冷拔开裂原因分析 |
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| 引用本文： | 罗国华,范植金,许竹桃,张友登. GCr15轴承钢冷拔开裂原因分析[J]. 武钢技术, 2011, 49(4): 24-26 |
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| 作者姓名： | 罗国华 范植金 许竹桃 张友登 |
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| 作者单位： | 武钢研究院,湖北武汉,430080 |
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| 摘 要： | 采用化学分析、金相观察等方法对冷拔GCr15轴承钢开裂原因进行分析。结果表明,烘烤温度过高,钢材表层产生片状珠光体,使得拉拔变形极不均匀,表层金属流动不均匀产生的附加拉应力超过金属强度极限,造成轴承钢冷拔开裂。
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| 关 键 词： | GCr15轴承钢 冷拔 裂纹 火焰烘烤 |
Analysis of cold drawing crack of GCr15 bearing steel |
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| LUO Guo-hua,FAN Zhi-jin,XU Zhu-tao,ZHANG You-deng. Analysis of cold drawing crack of GCr15 bearing steel[J]. Wisco Technology, 2011, 49(4): 24-26 |
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| Authors: | LUO Guo-hua FAN Zhi-jin XU Zhu-tao ZHANG You-deng |
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| Affiliation: | LUO Guo-hua,FAN Zhi-jin,XU Zhu-tao,ZHANG You-deng (Research and development center of WISCO,Wuhan 430080,China) |
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| Abstract: | The cause of crack of cold-drawing GCr15 bearing steel was analyzed by chemistry analysis and metallurgical microscope.The result shows that over high baking temperature results in formation of lamellar pearlite leading to non-uniformity of drawing deformation and furthermore the adjunctive tensile stress arising from non-uniform flow of the surface metal exceeds the limit of the strength of the metal.They are the primary causes to the cold drawing crack of the bearing steel. |
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| Keywords: | GCr15 bearing steel cold drawing crack flame baking |
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