Automated robotic welding systems have received a
great deal of attention, since they are highly appropriate
both to increase production rate and quality and to decrease
cost and production time for a desired product.
In order to obtain them, a complete control over the relevant
process parameters to get the required bead geometry
and which is also based on weldability is
indispensable. According to the results obtained from
robotic GMA welding applied to Erdemir 6842 steel
sheets having 2.5 mm thickness:
(1) The depth of penetration increases linearly with
increasing welding current between 95 and 115 A
and the average penetration rise was measured as
0.0225 mm for each 1 A current increment.
(2) In addition to welding current, arc voltage also
increases the penetration value by 0.02–0.12 mm
for 22–26 V, respectively. However, its effect is
not as much as welding currents.
(3) When the welding speed was taken as a parameter,
the deepest penetration was obtained in 60 cm/min
one. The penetration values increases from 0.03 to
0.08 mm between 40 and 60 cm/min. Its value
decreases after this top point.