| 重卡汽车齿轮开裂失效分析 |
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| 引用本文： | 曹颖,韩克甲,刘露. 重卡汽车齿轮开裂失效分析[J]. 热处理技术与装备, 2014, 0(3): 54-56 |
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| 作者姓名： | 曹颖 韩克甲 刘露 |
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| 作者单位： | 淄博市新材料研究所,山东淄博255040 |
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| 摘 要： | 某重卡汽车齿轮在使用过程中发生开裂。采用宏观、微观检验、化学成分分析及硬度检验等方法,对失效齿轮进行了分析。结果表明齿轮热处理不当造成组织不合格,存在大量铁素体,有效硬化层偏低,致使齿轮强度不高,无法承载设计载荷,最终使齿轮破裂。
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| 关 键 词： | 未溶铁素体 有效硬化层 齿轮 |
Failure Analysis on Cracking of Gear for Heavy Truck |
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| CAO Ying,HAN Ke-jia,LIU Lu. Failure Analysis on Cracking of Gear for Heavy Truck[J]. Heat Treatment Technology and Equipment, 2014, 0(3): 54-56 |
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| Authors: | CAO Ying HAN Ke-jia LIU Lu |
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| Affiliation: | ( New Material Inst Zibo City,Zibo Shandong 255040, China) |
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| Abstract: | The gear of a heavy truck occurred cracking during use. The failure gear was analyzed by macroscopic and microscopic test, chemistry composition analysis, hardness test etc. The results showed that improper heat treatment for gear caused the microstructure unqualifical,in which exist plenty of ferrite. The effective hardening layer is lower, which made the strength of gear be weaker. So gear can not bear the design load, and cracked at last . |
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| Keywords: | undissolved ferrite effective hardening layer gear |
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