CAJ | 학술논문

针对X80高强管线钢及相关焊接技术规范要求，应用自主研发的八焊炬内焊机及自保护药芯焊丝自动焊机进行管道全位置焊接试验，并进行焊接接头力学性能测试。确定了合理的坡口形式、焊丝型号及与之匹配的焊接参数，制定了“内焊机根焊+管道自保护药芯焊丝自动焊填充、盖面焊”的焊接工艺。试验结果证明，焊接工艺制定合理，操作简单，效率高，其焊接接头的各项性能指标均满足X80钢级管道工程焊接规范及国家相关标准要求。
침대X80고강관선강급상관한접기술규범요구，응용자주연발적팔한거내한궤급자보호약심한사자동한궤진행관도전위치한접시험，병진행한접접두역학성능측시。학정료합리적파구형식、한사형호급여지필배적한접삼수，제정료“내한궤근한+관도자보호약심한사자동한전충、개면한”적한접공예。시험결과증명，한접공예제정합리，조작간단，효솔고，기한접접두적각항성능지표균만족X80강급관도공정한접규범급국가상관표준요구。
Aiming at the X80 high strength pipeline steel and related welding technical specification requirements,it adopted independent development eight welding torch internal welder and self-shielded flux-cored wire automatic welder to carry out pipeline all-position welding test,and conducted mechanical properties testing of welded joints. It determined reasonable groove type,welding wire type and matching welding parameters,and formulated welding technology internal welding machine for root welding+self-shielded flux-cored wire automatic welding for fill and cover welding. The test results proved that the welding process is reasonable,simple operation,and high efficiency,the various performance indicators of welded joints all meet the X80 steel grade pipeline engineering welding specification and relevant national standards.