Study on the equipment and techniques for automatic pipeline welding in mountain area

ZHANG Feng; LIU Xiaowen; XU Xinxin; ZHANG Yi; NIU Lianshan

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Study on the equipment and techniques for automatic pipeline welding in mountain area
Vol. 48, Issue 2, Pages: 37-41(2018)
DOI：

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ZHANG Feng, LIU Xiaowen, XU Xinxin, et al. Study on the equipment and techniques for automatic pipeline welding in mountain area. [J]. 48(2):37-41(2018)
DOI：

ZHANG Feng, LIU Xiaowen, XU Xinxin, et al. Study on the equipment and techniques for automatic pipeline welding in mountain area. [J]. 48(2):37-41(2018) DOI：

摘要

大坡度条件下管道焊接施工是大口径长输管道敷设过程中的难点,传统的焊接方法施工效率低,同时易于出现气孔、夹渣、未熔合等缺陷。通过设备和工艺的改进,实现了纵向坡度30°下的管道自动焊施工。分析山区自动焊的技术难点,介绍了一种为山区自动焊施工设计的设备及工艺。焊接试验结果表明,这种焊接设备及焊接方法能够适应30°坡度条件下管道的组对焊接,在保证焊接质量的同时大大提高了焊接效率。

Abstract

It is a difficult issue during large diameter long distance pipeline laying process to implement pipeline welding construction under the condition of steep slope. Traditional welding method is of low construction efficiency;meanwhile defects like porosity,slag inclusion & incomplete fusion are prone to be found. Automatic pipeline welding under the condition of 30° longitudinal grade is achieved through improvements in equipment and process parameters. This article analyzes technical difficult points of automatic welding in mountain area and introduces an equipment and techniques designed for automatic pipeline welding in mountain area.Welding test was taken through which it is showed that the welding equipment and welding method is able to adapt to welding under the condition of 30°longitudinal grade. Welding quality is guaranteed while welding efficiency is raised by a big margin.