| 55CrSi钢气门弹簧断裂原因分析 |
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| 引用本文： | 孟凡西,闫行义.55CrSi钢气门弹簧断裂原因分析[J].理化检验(物理分册),2009(7):446-447. |
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| 作者姓名： | 孟凡西 闫行义 |
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| 作者单位： | 郑州煤矿机械集团有限责任公司;郑州大学材料科学工程学院; |
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| 摘 要： | 采用化学成分分析、金相检验和硬度测试等方法对Ф3．6mm55CrSi钢气门弹簧在台架试验中的断裂原因进行分析。结果表明：由于钢丝表面存在的脆性非金属夹杂物，导致气门弹簧在试验时出现早期疲劳断裂。
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| 关 键 词： | 气门弹簧 夹杂物 疲劳断裂 |
Fracture Reason Analysis of 55CrSi Steel Valve Spring |
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| MENG Fan-xi,YAN Xing-yi.Fracture Reason Analysis of 55CrSi Steel Valve Spring[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2009(7):446-447. |
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| Authors: | MENG Fan-xi YAN Xing-yi |
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| Affiliation: | 1.Zhengzhou Coal Mining Machinery Group Co.Ltd.;Zhengzhou 450013;China;2.School of Material Science and Engineering;Zhengzhou University;Zhengzhou 450001;China |
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| Abstract: | The fracture reason of 43. 6 mm 55CrSi steel valve spring in dais experiment was analyzed by means of chemical composition analysis, metallographic examination and hardness testing. The results showed that the brittleness nonmetallic inclusion on the steel wire surface led to early fatigue fracture. |
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| Keywords: | valve spring inclusion fatigue fracture |
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