| 40Cr钢机油泵轴断裂分析 |
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| 引用本文： | 张学彬,廖振华,蒋月娟,徐金富. 40Cr钢机油泵轴断裂分析[J]. 理化检验(物理分册), 2010, 0(4): 257-258,262 |
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| 作者姓名： | 张学彬 廖振华 蒋月娟 徐金富 |
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| 作者单位： | 宁波市产品质量监督检验研究院;宁波工程学院; |
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| 摘 要： | 采用化学成分分析、断口分析、硬度测试及金相检验等方法,对某汽车机油泵轴的断裂原因进行了分析。结果表明:该泵轴的断裂为早期疲劳断裂,造成疲劳断裂的主要原因是未按要求对泵轴进行调质处理,致使材料的力学性能未达到设计要求,疲劳强度降低。
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| 关 键 词： | 泵轴 疲劳断裂 40Cr钢 调质处理 |
Fracture Analysis of 40Cr Steel Oil Pump Shaft |
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| ZHANG Xue-bin,LIAO Zhen-hua,JIANG Yue-juan,XU Jin-fu. Fracture Analysis of 40Cr Steel Oil Pump Shaft[J]. Physical Testing and Chemical Analysis Part A:Physical Testing, 2010, 0(4): 257-258,262 |
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| Authors: | ZHANG Xue-bin LIAO Zhen-hua JIANG Yue-juan XU Jin-fu |
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| Affiliation: | 1.Ningbo Academy of Supervision and Inspection for Product/a>;Ningbo 315041/a>;China/a>;2.Ningbo University of Technology/a>;Ningbo 315016/a>;China |
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| Abstract: | The fracture of an engine oil pump shaft was investigated by means of chemical compositions analysis,macro-fracture analysis,hardness test and microstructure examination.The results show that the fracture of the pump shaft was early fatigue fracture.The main cause for the fatigue fracture resulted from no quenching and tempering treatment,which led the mechanical property of the material could not meet with the design requirement and fatigue strength of the pump shaft decreased. |
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| Keywords: | pump shaft fatigue fracture 40Cr steel quenching and tempering treatment |
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