摘要
为了掌握油气管道环焊缝用熔化极气体保护焊(GMAW)焊丝的性能,为现场焊接焊材选用提供指导,对国内外几种气保实心焊丝形成的管道环焊缝的强度、韧性进行了试验研究。试验采用50%Ar+50%CO_(2)混合气体的GMAW方法,在31.8 mm厚的L485管线钢板上进行。试验结果表明,国产的GMAW焊丝在合适的工艺条件下,具有较高的强度和韧性,可用于高强度管线钢管道环缝的焊接。
To master the performance of GMAW eletrodes for oil&gas pipeline girth welding and provide guidance for the selection of welding materials,the strength and toughness of girth weld formed by several kinds of gas shielded solid welding wires at home and abroad were studied.The test was carried out on 31.8 mm thick L485 pipeline steel plate by GMAW process of 50%Ar+50%CO_(2) mixed gas.The test results show that the domestic GMAW electrodes has high strength and toughness under suitable process conditions,which can be used for girth welding of high strength pipeline steel pipe.
作者
李为卫
杨耀彬
何小东
王正卿
LI Weiwei;YANG Yaobin;HE Xiaodong;WANG Zhengqing(State Key Laboratory for Performance and Structural Safety of Petroleum Tubular Goods and Equipment Materials,CNPC Tubular Goods Research Institute,Xi′an,Shaanxi 710077,China;Sichuan Branch of China Classification Society Certification Company,Chengdu,Sichuan 610065,China)
出处
《石油管材与仪器》
2021年第2期62-64,共3页
Petroleum Tubular Goods & Instruments
基金
国家重点研发计划课题“L485高应变海洋管道环焊材料及工艺技术”(编号:2018YFC0310305)
中油股份有限公司课题“天然气管道环焊缝修复用B型套筒维抢修关键技术及换管焊接工艺优化研究”(编号:2019E-23-0501)。
关键词
GMAW
焊丝
管道环焊缝
强韧性
GMAW
electrode
pipeline girth weld
strength and tougness
