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 source Secheron Microplasma Arc Machine (Model: PLASMAFIX 50E) Polarity DCEN Mode of operation Pulse mode Electrode 2% thoriated tungsten electrode Electrode diameter 1 mm Plasma gas Argon and hydrogen Plasma gas flow rate 6 Lpm Shielding gas Argon Shielding gas flow rate 0.4 Lpm Purging gas Argon Purging gas flow rate 0.4 Lpm Copper nozzle diameter 1 mm Nozzle to plate distance 1 mm Welding speed 260 mm/min Torch position Vertical Operation type Automatic
