International Journal of Manufacturing Engineering / 2014 / Article / Tab 2

Research Article

Optimization of Fusion Zone Grain Size, Hardness, and Ultimate Tensile Strength of Pulsed Current Microplasma Arc Welded AISI 304L Sheets Using Genetic Algorithm

Table 2

Welding conditions.

Power sourceSecheron Microplasma Arc Machine (Model: PLASMAFIX 50E)
PolarityDCEN
Mode of operationPulse mode
Electrode2% thoriated tungsten electrode
Electrode diameter1 mm
Plasma gasArgon and hydrogen
Plasma gas flow rate6 Lpm
Shielding gasArgon
Shielding gas flow rate0.4 Lpm
Purging gasArgon
Purging gas flow rate0.4 Lpm
Copper nozzle diameter1 mm
Nozzle to plate distance1 mm
Welding speed260 mm/min
Torch positionVertical
Operation typeAutomatic