| BM50型风扫磨机主齿轮失效分析 |
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| 引用本文： | 王剑华,熊大民,杨宁,杜焰,孙勇.BM50型风扫磨机主齿轮失效分析[J].理化检验(物理分册),2004,40(7):351-353. |
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| 作者姓名： | 王剑华 熊大民 杨宁 杜焰 孙勇 |
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| 作者单位： | 昆明理工大学,云南省新材料制备与加工重点实验室,昆明,650093 |
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| 摘 要： | BM50型大力神风扫磨机在正常操作务件下主齿轮(材质为4340钢)出现早期失效，一齿断裂脱落，另有17齿开裂。采用化学成分分析、金相检验、扫描电镜观察以覆硬度测试方法，对断裂齿轮进行了失效分析，结果表明，失效齿轮属于疲劳断裂；引起断裂的直接原因是位于齿轮啮合面硬化层底部的堆积夹杂物，所用材料存在严重的冶金质量缺陷。
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| 关 键 词： | 齿轮 断裂 失效分析 |
| 文章编号： | 1001-4012(2004)07-0351-03 |
FAILURE ANALYSIS ON MAIN GEAR FOR BM50 GRINDING MACHINE |
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| WANG Jian-hua,XONG Da-ming,YANG Ning,DU Yang,ersity of Science and Technology,Kunming ,China.FAILURE ANALYSIS ON MAIN GEAR FOR BM50 GRINDING MACHINE[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2004,40(7):351-353. |
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| Authors: | WANG Jian-hua XONG Da-ming YANG Ning DU Yang ersity of Science and Technology Kunming China |
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| Affiliation: | WANG Jian-hua,XONG Da-ming,YANG Ning,DU Yang,ersity of Science and Technology,Kunming 650093,China) |
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| Abstract: | In this paper the main gear of an early failed BM50 grounding machine was examined by means of metallography, scanning electron microscopy and hardness test. The results showed that the gear is made of steel 4340, and failed by fatigue failure. The inclusion is main reason to cause the fracture of the main gear. |
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| Keywords: | Gear Fracture Failure analysis |
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