| 主汽门操纵座弹簧的断裂失效分析 |
| |
| 引用本文： | 董汉武,高岩,郑志军.主汽门操纵座弹簧的断裂失效分析[J].机械工程材料,2007,31(1):60-62. |
| |
| 作者姓名： | 董汉武 高岩 郑志军 |
| |
| 作者单位： | 华南理工大学机械工程学院,广东广州,510640;华南理工大学机械工程学院,广东广州,510640;华南理工大学机械工程学院,广东广州,510640 |
| |
| 摘 要： | 对某电厂汽轮机主汽门操纵座弹簧的断裂失效进行了分析.结果表明:弹簧材料化学成分及组织都符合国家标准;导致其早期疲劳断裂的主要原因是弹簧表面的腐蚀坑;腐蚀坑是在弹簧使用前的放置过程中形成的;改善弹簧放置环境和缩短放置时间可以避免腐蚀坑的产生.
|
| 关 键 词： | 弹簧 疲劳 腐蚀 |
| 文章编号： | 1000-3738（2007）01-0060-03 |
| 修稿时间： | 2005-12-122006-03-10 |
Failure Analysis of a Spring in Manipulating Pedestal of Main Throttle Valve in a Power Plant |
| |
| DONG Han-wu,GAO Yan,ZHENG Zhi-jun.Failure Analysis of a Spring in Manipulating Pedestal of Main Throttle Valve in a Power Plant[J].Materials For Mechanical Engineering,2007,31(1):60-62. |
| |
| Authors: | DONG Han-wu GAO Yan ZHENG Zhi-jun |
| |
| Affiliation: | South China University of Technology, Guangzhou 510640, China |
| |
| Abstract: | The fracture of a spring in manipulating pedestal of a main throttle valve used for steam turbine was studied. Both of composition and microstructure are qualified for the national criterion. The fracture mechanism of the spring is fatigue fracture. The main reason of the early fatigue fracture arose from the surface corrosion of the spring, which occurred during the placement before use. This problem cab be solved by improving the placement environment and shortening the placing time. |
| |
| Keywords: | spring fatigue corrosion |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
