Properties of Φ1 422 mm×21.4 mm X80M SAWH Pipe
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摘要: 分析X80M钢级Φ1 422 mm×21.4 mm螺旋缝埋弧焊管的化学成分、力学性能、组织结构和几何尺寸；研究了壁厚对X80M钢级焊管热影响区硬度的影响。分析认为：X80M钢级Φ1 422 mm×21.4 mm焊管的合金元素范围比Φ1 219 mm×18.4 mm焊管明显缩窄，力学性能相比Q/SYGD 0503.2有较大的富余量，韧性良好，残余应力较低，管端几何尺寸控制良好，但热影响区存在一定程度的软化。后续应关注壁厚增加带来的大壁厚焊管热影响区软化和焊接接头低强匹配等问题。Abstract: Analyzed here in the paper are the main aspects of the Φ1 422 mm×21.4 mm X80M SAWH pipe,including the chemical composition,the mechanical properties,the microstructure and the geometric dimensions,etc. Also studied is the effect by the wall thickness on the HAZ hardness of the pipe. It is regarded via the analysis that compared with the Φ1 219 mm×18.4 mm weld pipe,the alloy element range of the Φ1 422 mm×21.4 mm X80M SAWH pipe is obviously less wide,and compared with the requirements as specified under Standard Q/SYGD 0503.2,the mechanical properties of the X80M pipe have rather large margin. The pipe also features good toughness,low residual stress,and well controlled pipe-end dimensions;however there exists certain degree of HAZ softening. It is suggested to pay attention in the follow-up process to the issues like how the wall thickness increase affects HAZ softening of the heavy-wall weld pipe and the weld joint low strength-mating.
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Keywords:
- SAWH pipe /
- Sino-Russia-East Natural Gas Pipeline /
- St. G X80M /
- property /
- HAZ /
- softening
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期刊类型引用(3)
1. 何小东，张永青，HAN David，陈越峰，杨耀彬. Nb含量对X70钢级直缝埋弧焊管组织及强韧性的影响. 钢管. 2024(01): 29-34 . 
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2. 王洋，王猛，李建一，刘晶晶，孙志刚，谷海龙，陈楠. X80M钢级螺旋缝焊管对头性能分析. 钢管. 2024(01): 64-68 . 本站查看
3. 张晨鹏，胡涛，王天法，阮希然，周书亮，李建一. 超大厚径比螺旋缝埋弧焊管的研制. 钢管. 2023(04): 26-29 . 本站查看
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