江汉大学学报（自然科学版）Issue(3)：229-233,5.DOI:10.16389/j.cnki.cn42-1737/n.2015.03.007
卷筒小行星齿轮断裂失效分析
Fracture Analysis of Reel Asteroid Gear
张彦文 1许竹桃 1张友登 1陶勇2
作者信息
- 1. 武汉钢铁公司 武钢研究院，湖北 武汉 430080
- 2. 武汉钢铁公司 武钢质检中心，湖北 武汉 430080
- 折叠
摘要
Abstract
A tooth of reel asteroid gear fractured abnormally during operation. In order to find out how it occurred ,fracture of the gear were analysed by macroscopical observation and microscopical examination. The results showed that the gear failure was multiple origins fatigue fracture ,and cracks were also found at the dedendum of most other teeth of the gear. There were bainite and ferrite in gear base material , which showed the quenching cooling rate was too slow. Surface quenching was uneven. All of these problems lead to the decrease of the gear comprehensive mechanical properties. Some fatigue crack origins occured at the dedendum of teeth under the circulation work stress and stress concentration and the cracks expanded ,finally caused the gear fracture.关键词
疲劳断裂/淬火/贝氏体/淬硬层Key words
fatigue fracture/quench/bainite/hardening zone分类
矿业与冶金引用本文复制引用
张彦文,许竹桃,张友登,陶勇..卷筒小行星齿轮断裂失效分析[J].江汉大学学报（自然科学版）,2015,(3):229-233,5.
