压力容器2016，Vol.33Issue(6)：8-11,32,5.DOI:10.3969/j.issn.1001-4837.2016.06.002
CAP1400核电站接管和安全端焊接变形与残余应力研究
Investigation on Welding Deformation and Residual Stress for Nozzle Safe-End Welded Joints of CAP1400 Nuclear Power Plant
摘要
Abstract
Welding deformation and residual stress was studied for the mockup of the nozzle safe-end weld joint of CAP1400 nuclear power plant.It is showed that welding deformation occurs mainly in the welding initial stage.When the thickness of the deposited metal was a quarter of the joint,the amount of deforma-tion was about 3 mm,while 4.5 mm when the nozzle safe-end joint welding was completed.Both the cir-cumferential and axial welding residual stress are tensile stress through the whole welding joint.Max weld-ing residual stress is located in the heat affected zone.It is showed the max residual stress is mainly oc-curred near the fusion line between butt welds and buttering,as high as 500 MPa.关键词
CAP1400核电站/接管和安全端/焊接变形/残余应力Key words
CAP1400 nuclear power plant/nozzle safe-end/welding deformation/residual stress分类
机械制造引用本文复制引用
谷雨,张俊宝,余燕..CAP1400核电站接管和安全端焊接变形与残余应力研究[J].压力容器,2016,33(6):8-11,32,5.基金项目
国家重大专项资助项目 （）
