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http://dx.doi.org/10.5781/KWJS.2012.30.2.158

Effect of Welding Condition and Roller on Weldability of Al Coated Steel Sheet using Plasma Arc Welding  

Lee, Tae-Woo (School of Materials Science of Engineering, Pusan National University)
Park, Cheol-Ho (School of Materials Science of Engineering, Pusan National University)
Kang, Nam-Hyun (School of Materials Science of Engineering, Pusan National University)
Kim, Myung-Duk (Department of washing machine, LG electronics Inc)
Publication Information
Journal of Welding and Joining / v.30, no.2, 2012 , pp. 54-58 More about this Journal
Abstract
Al-coated steel sheets with excellent heat and corrosion resistance are widely used in various applications. In welding of thin plate, some defects such as unmelted zone and metal-through occur easily in the beginning and ending of welding line. In the study, the welding defects in Al-coated steel sheets were investigated with respect to plasma arc current, height between Cu block and base metals, and using a roller to align the height of the base metal. Full penetration and voids free welds were obtained with a plasma arc current 52A and weld speed 2.3m/min. An unmelted zone increased and Ericshen rate decreased as the height between Cu block and base metal increased from 0 to 0.6mm. Using a roller moving ahead of the plasma arc, the length of unmelted zone decreased from 1.7mm to 0.5mm.
Keywords
Plasma arc weding; Al-coated steel sheet; Ericshen test;
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