| LNG储罐用9%Ni钢焊接性研究 |
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| 引用本文： | 尹长华,张峰.LNG储罐用9%Ni钢焊接性研究[J].焊管,2010,33(8):14-18. |
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| 作者姓名： | 尹长华 张峰 |
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| 作者单位： | (中国石油天然气管道科学研究院，河北 廊坊 065000） |
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| 摘 要： | 结合9%Ni钢的SHCCT图、斜Y坡口对接裂纹试验结果及焊接接头热影响区性能测试结果，提出板厚22.1mm的9%Ni钢在环境湿度≤90%RH和环境温度≥-10℃情况下采用NiCrMo合金系焊条/焊丝焊接时，为获得优质焊接接头推荐的工艺措施和线能量为:预热温度控制在75℃左右，层间温度≤100℃，焊接线能量为15～20kJ/cm。
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| 关 键 词： | LNG储罐 9%Ni钢 焊接性 焊接热影响区 |
Weldability Research of 9%Ni Steel for LNG Tank |
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| YIN Zhang-hua,ZHANG Feng.Weldability Research of 9%Ni Steel for LNG Tank[J].Welded Pipe and Tube,2010,33(8):14-18. |
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| Authors: | YIN Zhang-hua ZHANG Feng |
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| Affiliation: | （Pipeline Research Institute of CNPC，Langfang 065000，Hebei，China） |
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| Abstract: | In this paper,combined with SHCCT chart of 9%Ni steel,Y-groove crack test and HAZ performacne test results of welding joints.it pointed out,when the environment temperature is higher than 10 ℃ and the environment humidity is lower than 90%,adopting NiCrMo alloyed electrode/wire,the following recommended processes and liner energy were used in order to obtain high quality welding joints： controlling preheat temperature is at about 75 ℃,interpass temperature is less than 100 ℃,welding liner energy is as 15~20 kJ/cm. |
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| Keywords: | LNG tank 9%Ni steel weldability HAZ |
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