| GCr15钢旋压轧辊表面失效原因分析 |
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| 引用本文： | 乐庸志,钱国钢. GCr15钢旋压轧辊表面失效原因分析[J]. 理化检验(物理分册), 2011, 0(8): 531-533 |
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| 作者姓名： | 乐庸志 钱国钢 |
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| 作者单位： | [1]北京科技大学,北京100083 [2]湖北新冶钢有限公司,黄石435001 |
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| 摘 要： | 通过宏观分析、化学成分分析、硬度测试、金相检验、断口分析以及能谱分析等方法对某批GCr15钢旋压轧辊的早期表面崩裂剥落失效原因进行了分析。结果表明:由于旋压轧辊钢材中的碳化物发生了偏聚,呈链状和长条状分布,增加了轧辊的脆性,降低了轧辊的疲劳寿命,从而导致轧辊在使用一轮后就在受力最大区域出现了表面崩裂剥落现象,发生接触疲劳失效。
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| 关 键 词： | GCr15钢 轧辊 表面崩裂剥落 碳化物偏聚 失效分析 |
Surface Failure Reason Analysis on GCr15 Steel Spinning Rollers |
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| YUE Yong-zhi,QIAN Guo-gang. Surface Failure Reason Analysis on GCr15 Steel Spinning Rollers[J]. Physical Testing and Chemical Analysis Part A:Physical Testing, 2011, 0(8): 531-533 |
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| Authors: | YUE Yong-zhi QIAN Guo-gang |
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| Affiliation: | 1.Beijing Technology University,Beijing 100083,China;2.Hubei Xinyegang Steel Co.,Ltd.,Huangshi 435001,China) |
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| Abstract: | By means of macro observation,chemical compositions analysis,hardness testing,metallographic examination,fracture analysis and energy spectrum analysis,early surface cleft spalling failure reason of a batch of GCr15 steel spinning roller was analyzed.The results show that carbide in material of the roller gathered and distributed in formation of chain-type and strip-type,which increased brittleness of the roller and lowered its fatigue life.So surface cleft spalling failure happened at the maximum stress zone only after a round use,and resulted in the contact fatigue failure of the roller. |
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| Keywords: | GCr15 steel roller surface cleft spalling carbide gathering failure analysis |
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