手工+半自动焊焊接质量控制

The welding quality control of SMAW+FCAW

结合西气东输二线管道工程中的手工+半自动焊接工艺方案,从低氢焊条上向焊的根焊施工、根焊清根操作,药芯自保护焊工艺热焊操作、填充焊及盖面等全部工艺,详细介绍了操作目的、技术要领、注意事项,对保证管线的焊接质量,防止产生焊接缺陷具有重要的指导作用。

In accordance with the SMAW＋FCAW welding process used on the Second West-East Gas Transmission Pipeline Project, this paper introduces the root pass upward welding with low-hydrogen sticks, root welding cleaning procedures, hot pass welding ,fill and gap with self-shielded flux-core,and the purpose of the operations,technical key points which plays a significant role in preventing welding defects to guarantee the welding quality of pipelines.