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异种钢管件焊接常出现在气田产建过程中,特别是在天然气处理厂、集气站及集气支干线建设过程中,由于化学成分、物理性能、冶金成分等的相异性,使得异种钢管焊接性变差,焊口质量变差,在焊接工艺和焊接材料的选择上变得更为苛刻。为满足规定的设计要求,通过分析异种钢管的焊接性,从焊接方法、材料、参数、坡口形式等的选择上综述了异种钢管焊接工艺,并以近几年施工中遇到的异种钢管焊接实例,具体叙述了其焊接工艺及操作要点。
Different types of steel pipe fittings often appear in the gas field production process, especially in the natural gas processing plants, gas gathering stations and gas gathering branch of the main line of construction, due to chemical composition, physical properties, metallurgical composition of the dissimilarity, making dissimilar steel pipe welding Deterioration of the sex, poor weld quality, in the welding process and the choice of welding materials become more demanding. In order to meet the specified design requirements, the welding process of dissimilar steel pipes is analyzed. The welding process of dissimilar steel pipes is summarized from the selection of welding methods, materials, parameters and groove forms. In the last few years, , Specifically described the welding process and operation points.