金属加工（热加工）Issue(5)：63-70,8.
深水导管架S420高强钢焊缝金属扩散氢来源及关键影响因素分析
Analysis of diffusion hydrogen source and key influencing factors of deep-water jacket S420 high strength steel weld metal
武晓刚 1王金生 1马丽 1毕晓健 1李黎霞1
作者信息
- 1. 海洋石油工程股份有限公司 天津 300452
- 折叠
摘要
Abstract
The delayed crack of S420 high strength steel in deep-water jacket is very harmful to the strength and safety of jacket structure because of its concealment.Therefore,it is necessary to strictly control the weld quality of jacket structure.The diffusion hydrogen content in weld metal is one of the main causes of delayed cracks.In order to study the influence of construction environment factors(ambient temperature,humidity,wind speed and welding material exposure time)and process parameters(welding heat input and preheating temperature)on the diffusion hydrogen content of weld metal during the welding process of S420 high strength steel for deep-water jacket,this paper used flux-cored wire gas shielded welding(FCAW-G)and submerged arc welding(SAW)processes to test the diffusion hydrogen content of S420 high strength steel in different simulated environments.The internal relationship between the source of diffusion hydrogen during construction and the actual construction combination conditions and the diffusion hydrogen content of weld metal was studied.By analyzing the source and key influencing factors of diffusion hydrogen in the weld metal of S420 high strength steel for deep-water jacket,effective preventive measures were proposed from the perspective of reducing diffusion hydrogen content to reduce the probability of delayed cracks in deep-water jacket welding.关键词
深水导管架/S420高强钢/环境要素/焊接工艺/扩散氢Key words
deep-water jacket/S420 high strength steel/environmental factors/welding process/diffusion hydrogen引用本文复制引用
武晓刚,王金生,马丽,毕晓健,李黎霞..深水导管架S420高强钢焊缝金属扩散氢来源及关键影响因素分析[J].金属加工（热加工）,2025,(5):63-70,8.
