碳钢管道焊后热处理要求分析
Analysis of Post-weld Heat Treatment Requirements for Carbon Steel Pipes
王贵斌1
作者信息
- 1. 中石化南京工程有限公司,江苏 南京 210049
- 折叠
摘要
碳钢是可焊接性较好的钢种,选择适当的焊接材料和工艺,焊接接头不易产生淬硬组织或冷裂纹.分析了碳钢管道的焊接及预热要求、焊后热处理规定,以及免除焊后热处理的条件.认为在应力腐蚀工况条件下,为避免发生腐蚀破裂,全壁厚范围内的碳钢管道焊后应进行热处理.
Abstract
Carbon steel is a type of steel with good weldability.If appropriate welding consumables and procedures are selected,the welding joints are not prone to hardened structures or cold cracks.The welding and preheating requirements,post-weld heat treatment requirements,and conditions for ex-emption from post-weld heat treatment of carbon steel pipes are analyzed.It is concluded that in order to avoid corrosion cracking under stress corrosion conditions,carbon steel pipes within the full wall thickness range should be heat treated after welding.
关键词
碳钢管道/焊接/预热/焊后热处理/应力腐蚀/硬度Key words
carbon steel pipe/welding/preheating/post-weld heat treatment/stress corrosion/hardness引用本文复制引用
出版年
2024
NETL
NSTL
万方数据