碳钢管道全位置自动TIG焊

摘要

以20# 碳钢管φ88.9×4.5管-管对接焊接为例,简述碳钢管道全位置自动TIG焊的焊接工艺和操作要点.主要包括:工作条件；坡口型式的选择和加工；组对工艺参数和要求；焊接试验前的准备；分析主要工艺参数对焊缝成形的影响；根据全位置焊接过程中的受力特点,合理划分焊接区间,通过试验优化焊接工艺参数；最后按照标准进行一系列检查和试验,形成成熟的焊接工艺.%Taking 20# carbon steel pipe φ 88.9×4.5 tube-tube butt welding for example, this paper briefly discusses all-positionautomatic TIG welding process and operation parameters,mainly including working conditions;groove type selection and processing;fitting up process parameters and requirements; pre-preparation of welding test; analysis of key process parameters' impact on weldjoint reasonable division of welding section according to the characteristics of force in all-position welding process; optimizationwelding process parameters and the formation of mature welding process through series of inspection and testing according to thestandard.