Technology on Arc Welding Machine of Aluminum by Digital Control

LEE, Chang-Je; KIM, Yu-Chan; KIM, Jong-Do

doi:2013.31.1.26

J Weld Join > Volume 31(1); 2013 > Article

Special Issue

Journal of KWJS 2013;31(1):26-32.
DOI: https://doi.org/10.5781/KWJS.2013.31.1.26 Published online June 4, 2013.

Technology on Arc Welding Machine of Aluminum by Digital Control

Chang-Je LEE, Yu-Chan KIM, Jong-Do KIM

Correspondence: Chang-Je LEE,
Email: lab@bestfa.co.kr

Abstract

Recently, welding technology of nonferrous metals which were difficult to implement by arc welder has become available through digitalization of arc welding machine. Among them, the welding quality improvement of aluminum welding is very noticeable. These results increase the arc stability by controlling arc current and voltage waveform precisely, and control wire feed speed by synchronizing with arc current which the feed rate of filler wire is controlled by a precise motor control of servomotor and not by a simple constant speed feeding. Not only through the hardware digitalization of arc welding machine but also through advance of software of arc welding, it became possible to implement a certain level of welding quality by a simple operation. These led to CMT welding process implementation which requires low heat input than current arc welding and highly increased the applicability of the aluminum welding.

Key Words: Aluminum, Digital, Arc stability, Inverter, Synergic line, CMT