CRC EVANS全自动焊技术在西气东输二线管道工程中的应用

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作者单位:: 中国石油天然气管道局第三工程分公司,河南中牟 451450
China Petroleum Pipeline Bureau No.3 Engineering Company, Zhongmu 451450, China

关键词:: 长输管道;全自动焊接技术;应用
ong-distance pipeline;fully automatic welding technology;application

摘要:: 根据西气东输二线焊接施工的经验,从钢管级配、坡口加工、管口预热、焊接材料、焊接工艺参数、焊接电弧穿透力、送丝速度、特殊坡口组对的焊接以及焊工的操作技能等方面总结了CRC EVANS全自动焊施工技术的要点及其要求,介绍了施工现场应用情况,并对CRC EVANS全自动焊进行了效益分析。现场施工实践证明,CRC EVANS全自动焊效率大约是手工焊接的10~12倍,日平均焊接70~80道焊口,焊接合格率达98.89%。
Based on the experience of welding construction in the Second West to East Gas TransmissionPipeline Project, this paper summarizes the key construction points and requirements of CRC EVANS fullyautomatic welding technology regarding steel pipe gradation, bevel machining, pipe end preheating, weldingmaterials, welding process parameters, penetrability of welding arc, wire feeding velocity, butt welding of spe-cial groove and welding personnel operation skill, describes field application of the welding method and ana-lyzes its benefits. The practice indicates that the efficiency of CRC EVANS fully automatic welding is 10-12times higher than that of manual welding, the quantity of daily average welds is 7080, welding qualified rateis 98.89%.

2009,5(5): 29-32 收稿日期：2008-10-6

分类号：TE973.3

作者简介：李远智(1968-),男，山东即墨人，1996年毕业于河南大学.从事石油天然气管道工程施工工作。