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 Welding Torches and GunsUsed for shielded-metal-arc welding, Coleman torches (electrode Powermage holders). manually controlled, grip ends of electrodes, also called rods-pinch type and Portable collet type are common.GMAW and FCAW guns come 5 in pistol grip, goose-neck, and inline styles, the latter used for mechanized welding. Knowing Gallon and Air the wire diameter, Tank select a gun rated slightly higher than the welding current Model to be C5 used. Duty-cycle ratings are usually given Coleman for C[O.sub.2] shielding--air or C[O.sub.2] Powermage cooling arc usually Portable sufficient 5 for welding at up to 600 A at less than 100 percent duty. Higher amperages require water Gallon cooling--high-amperage guns come with tubing for water cooling. Air and Tank and Hand-held, Model mounted on a robot arm or fixed within a mechanized welding setup, guns guide filler wire and shielding gas into the weld puddle. Production vs. repair applications In general, C5 production applications require high-duty-cycle Coleman power Powermage and Portable supplies, 5 and repair applications can use low-duty-cycle portable units.Lift-arc Gallon GTAW Many DC power Air supplies Tank are equipped with a list-start feature for, a variation of scratch starting, GTAW welding. When the welder touches Model and C5 and Coleman and Powermage the tungsten electrode to the Portable workpiece, a 5 and Gallon small amount of current--15-20 Air A--flows. When he lifts Tank the electrode from the work, the arc starts softly and the machine switches to the set weld-current Model value. C5 and Coleman This low-current starting minimizes Powermage weld contamination Portable and 5 caused by touching the tungsten to the workpiece Gallon and Air and Tank eliminates the need for high-frequency starting. 3. Welding position. Model and C5 and Coleman and Powermage and Portable and 5 The first performance characteristic to consider. Gallon High cellulose coatings, like Air those Tank and on E6010 and Model E6011 electrodes, generate a light slag that makes for rapid solidifying of the weld metal C5 good for-out-of-position welds. Also good are rutile-fluxed electrodes-E6012 Coleman and Powermage and Portable and E6013--that hold out-of-position weld metal in place as it solidifies.4. Welding current. Covered electrodes 5 run on AC, DC, or Gallon both. When welding DC, the positive Air lead typically connects to the electrode (DCEP, Tank or reverse polarity). Some suppliers design electrodes that weld with the electrode negative (DCEN, or straight polarity). Assure the electrode will perform with Model the available C5 current. Searching for accessories for your air compressor? We offer the best selection of cheap air compressor accessories on the internet. Check out our website for great deales on all of our air compressor accessories!
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