摘要
电站锅炉集箱管座角焊缝位置经常发现裂纹缺陷,部分接管甚至出现泄漏.为避免类似问题的出现,在对该部位角焊缝进行现场勘测及关键部位应力测试的基础上,对管座角焊缝的焊接结构进行了数值计算.探讨了其裂纹产生的原因,分析了内部未焊透缺陷对角焊缝结构安全性的影响.结果表明,所提出的角焊缝缺陷安全性分析方法是可行的及正确的,为电厂焊接结构的安全检修提供了科学的依据.
Crack defect is often found in tube filled weld on power boiler set box,which usually causes pipe leakage. In order to avoid this defect,numerical simulation of the tube filled weld was carried out. In this paper,causes of crack were discussed and the influence of the incomplete fusion defection was studied. Then the validity of security analysis method for tube filled weld was proved,and the scientific basis was provided for the overhaul of the power station.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2013年第10期83-86,117,共4页
Transactions of The China Welding Institution
基金
浙江省质量技术监督系统科研项目(20110106)
质检公益性行业科研专项(201210019)
关键词
电站锅炉
角焊缝
应力测试
安全性分析
数值计算
power boiler
fillet weld
stress test
defects assessment
numerical simulation
