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| 20CrMo 齿轮失效分析 |
| Failure Analysis of 20CrMo Gear |
| Received:October 10, 2014 Revised:January 10, 2015 |
| DOI：10.3969/j.issn.1674-6457.2015.01.015 |
| 中文关键词: 齿轮 白亮层 失效分析 |
| 英文关键词: gear white shining layer failure analysis |
| 基金项目: |
| Author Name | Affiliation | | LI Di-fan | 1. Southwest Institute of Technical Engineering, Chongqing 400039, China
2. Chongqing Engineering Research Center for Environmental Corrosion and Protection, Chongqing 400039, China | | WANG Xiao-hui | 1. Southwest Institute of Technical Engineering, Chongqing 400039, China
2. Chongqing Engineering Research Center for Environmental Corrosion and Protection, Chongqing 400039, China | | FU Zhao-xu | 1. Southwest Institute of Technical Engineering, Chongqing 400039, China
2. Chongqing Engineering Research Center for Environmental Corrosion and Protection, Chongqing 400039, China | | WANG Chang-peng | 1. Southwest Institute of Technical Engineering, Chongqing 400039, China
2. Chongqing Engineering Research Center for Environmental Corrosion and Protection, Chongqing 400039, China | | MEI Hua-sheng | 1. Southwest Institute of Technical Engineering, Chongqing 400039, China
2. Chongqing Engineering Research Center for Environmental Corrosion and Protection, Chongqing 400039, China |
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| 中文摘要: |
| 目的 某厂生产的20CrMo 齿轮在使用不久后,发现凹坑缺陷后失效,需寻找失效原因。方法 通过应用金相组织分析、硬度分析和能谱分析等方法,对该齿轮的失效原因进行了分析。结果 试验后分析结果表明,齿轮次表面存在的白亮层组织破坏了材料的连续性,是其失效的主要原因。结论 建议改进热处理工艺,保证组织的均匀性,并选用成分均匀的钢材,以避免失效。 |
| 英文摘要: |
| Failure occurred in the 20CrMo gear produced by a certain manufacture shortly after using, with pit defects found. The aim of the study was to find the cause for the failure. The failure cause for the gear was analyzed by the examination of metallographic microstructure, the hardness analysis and the energy spectrum analysis. The analysis results after the test showed that the white shiningt layer on the subsurface of the gear which destroyed the continuity of the material was the main cause for the failure. It was suggested to improve the heat-treating process to ensure the uniformity of the microstructure, and to select the steel with uniform ingredients. |
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