压力容器2017，Vol.34Issue(4)：26-31,6.DOI:10.3969/j.issn.1001-4837.2017.04.005
天然气管道在役焊接热影响区t8/5影响因素研究
Influence of In-service Welding Parameters on the t8/5 of Gas Pipeline
摘要
Abstract
The effect of the different factors on t8/5 of heat affected zone was simulated by the SYSWELD for the in-service welding of the natural gas pipeline.Based on heat source model which was verified by the experiment,the influence of the wall thickness,the flow rate and pressure of the gas,ambient temperature,welding line energy on the t8/5 was studied.The results show that the t8/5increased with welding line energy,preheating temperature and environmental temperature increasing;the pipe wall thickness,gas velocity,pressure and t8/5 negative correlation;and with the increase of welding speed,t8/5 decreased first and then increased.关键词
在役焊接/数值模拟/天然气管道/冷却速度/冷裂纹Key words
in-service welding/numerical simulation/gas pipeline/cooling rate/cold cracking分类
机械制造引用本文复制引用
夏国发,姜修才,汤海平,魏秦文..天然气管道在役焊接热影响区t8/5影响因素研究[J].压力容器,2017,34(4):26-31,6.基金项目
国家重点研发计划(2016YFC0802100) （2016YFC0802100）
