JWJ > Volume 32(5); 2014 > Article
Journal of Welding and Joining 2014 October;32(5) :456-461.
Published online October 30, 2014.
Welding Characteristics of A-TIG Using Various Compositions of Active Fluxes
Bong-Hun Kim*, Yong-Soo Gong*
*Dept. of Mechanical Engineering, Graduate school, Daegu University, Gyeongsan 712-714, Korea
Correspondence: Bong-Hun Kim  Email: bhkim@daegu.ac.kr
  Published online October 30, 2014
ABSTRACT
Conventional TIG(C-TIG) welding process guarantees higher quality weldment when compared with other processes. However, C-TIG with inherent low penetration shows disadvantages in productivity, especially for thick-walled structure. To overcome these handicaps, active-flux TIG(A-TIG) welding has been introduced and studied widely in a motivation to improve both quality and productivity. Present study made a focus on optimum combination of oxide components to enhance arc contraction and penetration. Results indicated that arc contraction inducing enhancement of penetration could be possible when composition of active fluxes was well matched with base metal.
Keywords: A-TIG(Active Flux TIG) | C-TIG(Conventional TIG) | Arc contraction | Non-metallic oxide | Active flux
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