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JWJ > Volume 37(4); 2019 > Article
Journal of Welding and Joining 2019 August;37(4) :347-356.
Published online August 23, 2019.
doi:https://doi.org/10.5781/JWJ.2019.37.4.9
A Study on Spatter Tracking Algorithm for a Vertical GMA Welding Process
Tae-Jong Yun1  , Min-Ho Park2  , Won-Bin Oh1  , Bo-Ram Lee1  , Ill-Soo KIm1 
1Dept. of Mechanical Engineering, Mokpo Univ., Mokpo, 58554, Korea
2Research Institute of Medium & Small Shipbuilding, Yeongam, 58457, Korea
Correspondence: Ill-Soo KIm  Email: ilsookim@mokpo.ac.kr
Received April 15, 2019  Revised May 7, 2019  Accepted June 25, 2019  Published online August 23, 2019
ABSTRACT
GMA (Gas Metal Arc) welding has the advantage of no slag formation and is becoming the most suitable technology for automated welding. Recently, robot welding and machine welding have been replaced by GMA welding. However, welding spatter has always been a problem with GMA welding, especially GMA welding using CO2 gas as a shielding gas. Therefore, it is necessary to minimize the occurrence of spatter. In this paper, the spatter generation process was analyzed and the amount of generated spatters was minimized by controlling the unstable waveform of the current. In addition, we developed a spatter tracking algorithm to confirm the effect of spatter reduction.
Keywords: Gas metal arc | Spatter | Spatter tracking algorithm | Welding automation
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