PREGUIDED MIG WELDING OF DIFFRENTIAL METAL RING

Abstract

The motivation behind the idea was the need to decrease spatter and eliminate incomplete fusion defects. The pulsed arc
process incorporated the benefits of axial spray transfer — clean, spatter-free welds having excellent fusion with lower
heat input. The lower average current provided by GMAW-P allowed for out-of-position welding capability with
improved weld quality, when compared with short-circuits transfer. The GMAW process is flexible in its ability to
provide sound welds for a very wide base material type and thickness range. Central to the application of GMAW is a
basic understanding of the interplay between several essential variables:
• The thickness range of the base material to be welded will dictate the electrode diameter, and the useable current
range.
• The shielding gas selection will influence the selection of the mode of metal transfer, and will have a definite effect on
the finished weld profile. Gas Metal Arc Welding (GMAW) process is leading in the development in arc welding process
which is higher productivity and good in quality. In this study, the effects of different parameters on welding penetration
measurement in mild steel that having the 6mm thickness of base metal by using the robotic gas metal arc welding are
investigated. As a result, it obvious that increasing the parameters value of welding current increased the value of depth
of penetration. Other than that, arc voltage and welding speed is another factor that influenced the value of depth of
penetration.