Crack failure of gears used in generating electricity equipment by wind power

被引：6
|
作者：
Xu, Xiao-lei [1 ]
Yu, Zhi-wei [1 ]
Gao, Yu-ming [1 ]
Wang, Tie-nan [1 ]
机构：
[1] Dalian Maritime Univ, Electromech & Mat Engn Coll, Dalian 116026, Peoples R China
来源：
ENGINEERING FAILURE ANALYSIS | 2008年 / 15卷 / 07期
关键词：
gear; once instantaneous cracking; inclusion clusters; failure analysis;
D O I：
10.1016/j.engfailanal.2007.10.014
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A failure investigation had been conducted on the two failed gears which were used in generating electricity equipment by wind power. Fractography investigation on the cracked teeth indicates that the crack origins are about 3 mm from the groove and exhibits point-like features. The cracking nature of the two gears attributes to the once instantaneous cracking. Metallurgical analysis indicates that cracking of the teeth occurred during the carburization-quenching process. The presence of a number of inclusion clusters consisting of Al2O2 complex inclusions in the crack origin zones is mainly responsible for cracking of the gears. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：938 / 945
页数：8
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