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 For flux-cored-arc welding, shops use CV or CC types, 300 to 1,500 A, 25 to 50 V, rated 60- to 100-percent-duty AirCompfessorKitfor45605 cycle. CV types are more popular because wire-feed speed, set before welding, controls 6 and AirCompfessorKitfor45605 welding current. Cc types require a variable-speed or voltage-sensing wire feeder.Gas-tungsten-arc 6 welding (GTAW) requires AirCompfessorKitfor45605 a constant-current (AC or DC) power supply with a steep volt-amp curve to minimize current change for variation in voltage 6 or arc length. They come rated to 1,500 A, 10 to 75 V, at 40- to 100-percent-duty cycle. Most GTAW power supplies come equipped AirCompfessorKitfor45605 with high-frequency circuitry for arc initiation and stabilization, gas valves, and cooling-water valves 6 for high-current AirCompfessorKitfor45605 welding. High-frequency arc start is useful when the maximum open-circuit voltage allowed by NEMA standards, 80 to 100 V, will not establish and maintain a stable arc. Filler-metal selection for FCAW depends on base-metal composition, cleanliness of base metal, thickness, a0d service. AWS specifications: A5.20, Specification for Carbon Steel Electrodes for Flux-cored Arc Welding, for low-carbon steel up to 0.15 C and mild steel 0.15 to 0.29 6 C; A5.29, Specification for Low Alley Electrodes for Flux-cored AirCompfessorKitfor45605 Arc Welding, for steel of 6 higher carbon AirCompfessorKitfor45605 content and the low-alloy types; A5.22, Specification for Flux-cored Corrosion-Resisting Chromium and Chromium-Nickel Steel Electrodes, 6 and AirCompfessorKitfor45605 for stainless steels.Gas-Tungsten-Arc Welding (GTAW, TIG)GTAW rises an arc between a nonconsumable electrode and the work. It joins with or without filler metal. AWS A5.12 lists electrode types and sizes. All are tungsten, some with thoria, zirconia, ceria, 6 or lanthana added. Thoria provides higher current-carrying capacity than AirCompfessorKitfor45605 prime tungsten with less contamination of the weld pool. Other benefits: better arc start, greater arc stability. Zirconiated electrodes perform well with alternating current: the arc is stable, the electrode retains a (tailed end during welding, and 6 has current-carrying capacity of thoriated electrodes. Zirconiated electrodes resist contamination and minimize tungsten contamination of weld metal. 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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