| 挖掘机轴销断裂失效分析 |
| |
| 引用本文： | 朱晓红,章之衡.挖掘机轴销断裂失效分析[J].热处理,2013(5):73-75. |
| |
| 作者姓名： | 朱晓红 章之衡 |
| |
| 作者单位： | [1]无锡市产品质量监督检验中心,江苏无锡214101 [2]江苏省芙蓉模具材料科技有限公司,江苏宜兴214206 [3]宜兴市芙蓉特种钢厂,江苏宜兴214206 |
| |
| 摘 要： | 直径80 mm的45钢轴销，经过调质、中频淬火和回火处理，在使用了1393 h时发生断裂。化学成分分析、断口分析、金相检验和硬度试验结果表明，轴销的断裂是由中频淬火后的回火不充分及磨削工艺不当所致。
|
| 关 键 词： | 回火 二次淬火 磨削裂纹 扭转疲劳 |
Failure Analysis on Excavator Axle Pin |
| |
| ZHU Xiaohong,ZHANG Zhiheng.Failure Analysis on Excavator Axle Pin[J].Heat Treatment,2013(5):73-75. |
| |
| Authors: | ZHU Xiaohong ZHANG Zhiheng |
| |
| Affiliation: | 1. Wuxi Institute of Supervision ＆ Testing on Product Quality, Wuxi 214101, Jiangsu China; 2. Furong Die Materials Science and Technology Co., Ltd. of Jiangsu Province, Yixing 214206, Jiangsu China; 3. Furong Special Steel Factory of Yixing City, Yixing 214206, Jiangsu China) |
| |
| Abstract: | 80-mm-diam 45 steel axle pin, subjected to quenching and subsequent tempering, and mid-frequency hardening and subsequent tempering, has fractured when utilized up to 1393 h. The chemical composition analysis, fracture analysis, metallographic examination and hardness test were performed to reveal the cause of axle pin cracking. The results indicate that the early fracture of axle pin arises from grinding cracks derived from unsufficient tempering subsequent to mid-frequency hardening and improper grinding practice. |
| |
| Keywords: | tempering double quenching grinding crack torsional fatigue |
| 本文献已被 维普 等数据库收录！ |
|
