Study on the appearance and internal quality guarantee of welds in CO<sub>2</sub> gas shielded welding for 45° tilt fixed large diameter pipes

DAI Nengwu

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Study on the appearance and internal quality guarantee of welds in CO₂ gas shielded welding for 45° tilt fixed large diameter pipes
Vol. 48, Issue 2, Pages: 92-94(2018)
DOI：

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DAI Nengwu. Study on the appearance and internal quality guarantee of welds in CO₂ gas shielded welding for 45° tilt fixed large diameter pipes. [J]. 48(2):92-94(2018)
DOI：

DAI Nengwu. Study on the appearance and internal quality guarantee of welds in CO₂ gas shielded welding for 45° tilt fixed large diameter pipes. [J]. 48(2):92-94(2018) DOI：

摘要

针对CO,2,焊气保焊药芯焊丝管管对接45°固定的焊缝外观成形与焊缝内部质量的关系进行试验研究,摸索出一套完整的工艺操作方法。着重介绍焊缝成形和焊缝内部质量之间的重要关系,多层多道焊接的每一层焊缝成形都会直接影响到焊缝的内部质量,焊接操作时通过控制焊缝成形来提高焊缝外观质量和X射线探伤的合格率水平,在培训教学和生产实践中起到指导作用。

Abstract

Aimming at CO,2, gas shielded welding flux cored wire pipe butt weld fixed 45 degree appearance and internal quality of weld forming is studied,worked out a complete set of process operating methods. Focuses on the important relationship between the internal quality of weld forming and weld seam forming,each layer of the multilayer weld will directly affect the internal quality of weld,welding operation by controlling welding to improve the qualified rate of weld appearance quality and X ray detection,play a guiding role in the training of teaching and practice.