This is a research study to find out the effectiveness of robots welding, gas welding wire AWS A5 type cover.18 ER 70S-6, which effect to steel SS400 steel S45C grades and grade intended to study the performance of the tasks from the type of electrical flow. Voltage and welding head movement, which is a factor in the trial. 10 x 15 cm size in steel sheet thickness 6 mm connection head is connected by a perpendicular to steel sheets
. Experimental results for the physical characteristics of the samples from the digital microscope represents a comparison of weld flow and surface differences. 30 cm per minute and the voltage of the electricity at 20 volts by both types of steel sheet with thickness 6 mm is equal to the force output has been changed from 90-200 ampere, showed that welds steel SS400 grades. 90-160 ampere, high grade steel and S45C electricity since 90-200 ampere, consistency of welding. The size of the effect of deep penetration welds trial digital microscope can be seen that the melting of the wire connecting steel S45C grades. SS400, because Roy prunes found less that