These will work fine, especially if you’re only doing small cuts on hobby projects, but additional, higher quality air filters are still recommended. 3 types of filter 50500 Plasma Air Filterīasic: most plasma cutters will come with a basic air filter. Moisture in the pipes will come out in your torch and cause your consumables to burn up faster, resulting in bad cuts, which is something you’d like to avoid.ĭepending on which model machine you have, your air dryer/filter can be found inside the machine or at the back of the machine. These machines will still need a power supply, however.Īn air dryer or filter is essential for keeping contaminants like moisture and dust particles out of the machine’s air lines. If you’re looking for more portability, some machines come with built-in air compressors, like the RAZOR CUT 40 AIR Plasma Cutter. You don’t want to run out of air before you’ve finished your cut. When purchasing a compressor, make sure to get one that can deliver 70–120psi and has an airflow/intake volume rating that is greater than your plasma cutters. The need for an air compressor means they’re not very portable because you need to be connected to the compressor and a power supply. The bad news is that UNIMIG doesn’t supply air compressors, so you’ll have to purchase one separately from your local hardware store. The good news is that an air compressor attaches to the back of a plasma cutter in the same way a gas tank connects to the back of a welder. Unlike welding machines, every Australian market plasma cutter you can buy is made to work on compressed air only, including UNIMIG machines. In comparison, oxy cutting will only work on metals that contain iron, as it works through chemical reactions, such as oxidisation (it’s like a sped-up version of rusting) instead. Plasma can cut through anything electrically conductive steel, stainless steel and aluminium are all fair game. Plasma cutting (plasma arc cutting), therefore, is a melting process that uses plasma and an outside power source to create an electric arc between the electrode and the metal being cut to melt and eject it from the cut. It’s formed when compressed air or compressed gases (like nitrogen or argon) make contact with the electrode (which is inside the torch) and ionise to create plasma. Plasma is a super-heated column of gas (and the fourth state of matter).
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