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 For flux-cored-arc welding, shops use CV or CC airtznk types, 300 to 1,500 A, 25 to 50 V, rated airtznk 60- to 100-percent-duty cycle. CV types are more popular because wire-feed speed, airtznk set before welding, controls welding current. Cc types require a variable-speed or voltage-sensing wire feeder.Gas-tungsten-arc welding (GTAW) requires a constant-current (AC or DC) power supply with a steep volt-amp curve to minimize current change for variation airtznk in voltage 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 with high-frequency circuitry for arc initiation and stabilization, airtznk gas valves, and cooling-water valves for high-current welding. High-frequency arc start is useful when the maximum open-circuit voltage allowed by NEMA standards, airtznk 80 to 100 V, will not establish and maintain a stable arc. Features and OptionsPower supplies are capable to "talk to each other," useful when a company" wants to input the same welding procedures into several machines airtznk at once or monitor the welding consistency and performance of several machines from a single location-through serial-data communications. Fabricators can take some of their machines and connect them to airtznk a personal computer to monitor performance, and download welding parameters to the machines from it memory card for fast setup. High-end machines will calculate the pounds of weld wire used per machine. The machine can also be prepped to constantly monitor and average the welding current and voltage used, so that fabricators can set limits on the machine airtznk and track how many times welding parameters fell in or out airtznk of these limits. 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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