摘要
金属粉芯焊丝是药芯焊丝和实芯焊丝的混合物,具有熔敷速度较高、易于调节合金成分、狭小的根焊方便、焊接飞溅量少、熔渣量少等特点;RMD技术是由软件控制的,对短路过渡作出精确控制的一种技术。针对国内长输管道全位置根焊施工焊接技术现状,选用金属粉芯焊丝+RMD技术,制定焊接工艺方案,进行焊接工艺试验,成功实现了管道全位置根部半自动焊接。试验结果表明,焊接过程熔池稳定,易在根部产生高质量熔深,焊逢两侧熔合良好,可形成高质量的焊缝。
Metal powder-cored wire is a mixture of flux-cored wire and solid wire,which character is high deposition rate,less welding spatter and slag, access to narrow root welds, adjusting metal component easily.RMD technology exactly controls short circuiting transfer with software.This paper explains the reason of choosing the technology of metal powder-cored wire and RMD by analyze the status quo of all-position root welding technology of long-distance pipeline aboard and establishes welding process scheme, carries on welding process tests and succeeds in semi-automatic root welding of pipeline.The result of tests shows that molten pool is stable during welding, high quality penetration in root easily obtains and both sides of weld melts well to form good weld.
出处
《电焊机》
北大核心
2009年第3期86-88,共3页
Electric Welding Machine
关键词
金属粉芯焊丝
RMD
管道全位置
半自动根焊
metal powder-cored wire
RMD
all-position weld of pipeline
semi-automatic root welding
作者简介
黄军平（1967-），男，陕西临潼人，高级工程师，主要从事焊接技术管理工作。
