摘要
针对660MW汽轮机低压缸末级、次末级焊接隔板静叶角焊缝裂纹情况,从铸件时效应力,焊缝内原始缺陷等方面进行了原因分析,并介绍了包括裂纹挖除、补焊、焊后检查的补焊处理工艺。
This paper analyzes the cracks in the stationary blades fillet weld on diaphragm of 660 MW steam turbine low pressure cylinder from the aspect of casting ageing-stress and original weld defects,etc.,and adopts appropriate repaired welding process,which is proved to be successful in practice.
出处
《河北电力技术》
2009年第5期34-34,47,共2页
Hebei Electric Power
关键词
汽轮机
隔板静叶
焊缝
结构应力
残余应力
steam turbine
stationary
blades on diaphragm weld
structure stress
residual stress
