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 Production vs. repair applications In general, aircomprewsorstoragetanks10to30gal production applications require high-duty-cycle power supplies, and repair applications can use low-duty-cycle aircomprewsorstoragetanks10to30gal portable units.Lift-arc GTAW Many DC power supplies are equipped aircomprewsorstoragetanks10to30gal with a list-start feature for, a variation of scratch starting, GTAW welding. When the welder touches the tungsten electrode to the workpiece, a small amount of current--15-20 A--flows. When he lifts the electrode from the work, the arc starts softly and the machine switches to the set weld-current value. This low-current starting minimizes weld contamination caused by touching the tungsten to the workpiece and eliminates the need for high-frequency starting. Saw Uses CV or CC Power Supplies,... 200 to 1,500 A, 28 to 44 aircomprewsorstoragetanks10to30gal V, at 60- to aircomprewsorstoragetanks10to30gal 100-percent-duty cycle. Automatic units commonly use up to 1,500 A on one wire. Cv welding machines that offer variable-slope control give the welder extra adjustability, and can extend the usefulness of the machine to weld a range aircomprewsorstoragetanks10to30gal of material thicknesses and types.Selection of Power SourcesWhen choosing a power source, start by checking NEMA specs. NEMA Class I arc-welding power aircomprewsorstoragetanks10to30gal sources aircomprewsorstoragetanks10to30gal deliver rated output at 60-, 80-, or 100-percent-duty aircomprewsorstoragetanks10to30gal cycle: Class II units, 30-, 40-, or 50-percent; and Class III, 20 percent. First consider capacity and kind of current needed for the job. Rely on the manufacturer''s rating as being conservative: don''t buy more capacity than needed. Choose low--duty-cycle machines only for maintenance or for intermittent welding. If portability is important, consider inverter aircomprewsorstoragetanks10to30gal units. 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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