Abstract:
Gas Metal Arc Welding (GMAW) is a welding process that joining two
or more part into one piece and an arc between the continuous electrode. In
Gas Metal Arc Welding (GMAW) process, voltage selection has a main factor
for defect occur. Voltage is very important and therefore any changes in
voltage or current affect the arc transfer characteristics and resultant weld
quality. The effects of different voltage on welding defect in low carbon steel
that having the 10mm thickness of base metal by using the gas metal arc
welding are investigated. The different voltage was chosen in this study as 18V,
20V, and 24V and every voltages have four different specimen. The defect
were test for each specimen after the welding process trough non destructive
testing (NDT) by using Visual Inspection (VT) and Dye Penetrant Inspection
(DPI) and the effect of it it was studied. The findings also identified the 20V has
a great potential to produce stronger weldment compared to the others, this
affects the mode of transfer, shape of the arc, weld penetration and
temperature distribution within the arc.
