长输管道下向焊自动化焊接技术

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摘要：随着焊接设备和技术的不断发展，自动化焊接技术运用越来越广泛，对于材料、规格相对单一的长输管道，更有利于发展自动焊。开展新引进的长输管道内焊机、外焊机的工艺研究，总结了下向焊自动化焊接技术。所获得的焊接接头性能满足标准要求，将该焊接工艺在实际项目施工中进行运用，取得了很好的焊接效果。

关键词：长输管道；自动焊；内焊机；下向焊

Automatic welding technology

for downward welding of long-distance pipelines

DU Changsen

Shanghai Installation Engineering Group Co.， Ltd.， Shanghai 200080， China

Abstract： With the continuous development of welding equipment and technology， the application of automated welding technology is becoming increasingly widespread. For long-distance pipelines with relatively single materials and specifications， it is more conducive to the development of automatic welding. This article summarizes the downward welding automation welding technology based on the process research of newly introduced long-distance pipeline internal and external welding machines. The obtained welding joint performance meets the standard requirements， and this welding process has been applied in actual project construction， achieving good welding results.

Keywords： long distance pipeline; automatic welding; internal welding machine; downward welding

1 序言

随着中国经济快速发展，以及对石油、天然气消费需求量的不断增长，油气长输管道工程建设逐步向高钢级、大口径、高压力方向发展。（剩余2767字）