This research studies the factors that appropriate welding steel SS400 grade with mechanical arms, gas welding, CO2 generation Kawasaki RA10N objective is to study the factors that are suitable to weld steel grade SS 400. With a mechanical arm for welding gas CO2 model Kawasaki RA10N, size, thickness 3 mm seamless welding of steel plates, 2 plates with width 3 cm long, 10 cm in order to find out the rate of fast torch suitable for welding. To change the speed of torch that 15, 20 and 25 cm per minute are contributing factors is the potential difference that 15, 20 and 25 volts electrical currents starting at 80 amperes 10 amperes rise until 180 amperes measure results by comparing the characteristic Prin.Ayachueam physical test mechanical property toughness by impact test The results of this study found that the characteristics of the welding torch speed, 15, 20, 25 cm per minute. Voltage 20 Volt electric current in the range of 100-140 amperes, welding with welding. When put to the test with the test toughness properties with shock showed fast rate most appropriate welding head is 15 cm per minute. Voltage 20 volt electricity 100 Ampere, which resembles the weld ductility, the most by an average energy-absorbing material will hold even when impacted until breaking the highest located at 20.7 joules.
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