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ASM Handbook

Welding Fundamentals and Processes

Edited by
T. Lienert
T. Lienert
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;
T. Siewert
T. Siewert
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;
S. Babu
S. Babu
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;
V. Acoff
V. Acoff
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ASM International
Volume
6A
ISBN electronic:
978-1-62708-174-0
Publication date:
2011
Book Chapter

Gas Tungsten Arc Welding with Penetration-Enhancing Compounds

By
Ian D. Harris
Ian D. Harris
Edison Welding Institute
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Published:
2011
Page range:
355 - 358
Publication history
September 05, 2011

Abstract

This article describes compounds developed to enhance the penetration of the gas tungsten arc welding (GTAW) process. Penetration-enhanced GTAW processes have been referred to variously as Flux TIG, A-TIG, and GTAW with a penetration-enhancing compound (PEC). In all cases, the process uses a material that is not a flux but rather an oxide or mixture of oxides. The productivity of traditional GTAW is limited for many applications because of low deposition rates, shallow penetration (typically 3 mm, or ? in.), or inconsistent penetration. Penetration-enhanced GTAW processes can increases weld penetration by as much as 300% and reduces heat-to-heat variation in penetration and distortion.

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Ian D. Harris, 2011. "Gas Tungsten Arc Welding with Penetration-Enhancing Compounds", Welding Fundamentals and Processes, T. Lienert, T. Siewert, S. Babu, V. Acoff

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