电焊机2017，Vol.47Issue(8)：87-92,6.DOI:10.7512/j.issn.1001-2303.2017.08.17
CAP1400核电站钢制安全壳焊后热处理
Post weld heat treatment process of containment vessel for CAP1400 nuclear power plant
摘要
Abstract
The weld range specified for post weld heat treatment(PWHT) was determined based on the related requirement of ASME Section Ⅲ,Division l,Subsection NE,and especially on the structural style and material requirement.Considering the features of the construction,furnace heat treatment applies to joint between penetration sleeve and reinforcement plates.Local PWHT shall be used for longitudinal weld,circumferential weld,as well as the joint between reinforcement plates and CV ring weld.To avoid welding distortion,adopted the method of heating symmetrically for single or multiple longitudinal weld,and segment heating for circumferential weld as well as reinforcement p late weld in equipment hatch.The width of the heating zone,the width and thickness of the insulating zone are determined by experiments,to ensure all temperate temperature of 595 ℃ ～ 620 ℃,meeting design requirements.关键词
CAP1400/钢制安全壳/焊后热处理/局部加热Key words
CAP1400/containment vessel/post weld heat treatment/local heat分类
矿业与冶金引用本文复制引用
董永志,胡广泽,晏桂珍,修延飞..CAP1400核电站钢制安全壳焊后热处理[J].电焊机,2017,47(8):87-92,6.基金项目
国家重大专项资助项目(2017ZX06002007) （2017ZX06002007）
