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Plasma cutting is the fastest cutting process on carbon steel, aluminum, or stainless steel.
Plasma is defined in Websters as a ”collection of charged particles ... containing about equal numbers of positive ions and electrons and exhibiting some properties of a gas but differing from a gas in being a good conductor of electricity ...”.
Under water plasma cutting is nothing new - it was first done in the mid 1970's. But it still has many advantages that lead many fabricators, steel service centers, and manufacturers to prefer it over dry cutting. An "Air Curtain" or "Bubble Muffler" is used to create a pocket of air around the front end of the torch, shielding the arc from the water. But not every thickness of every material can be cut under water. So what are the limits, and what happens if you push them?
There are a lot of things that can cause problems with plasma torch consumable life, and troubleshooting a problem can be complicated and time consuming. So we’ve put together a list of common things that you can look for if you are having problems, or if you just want to make sure you are getting the most from your CNC plasma system.
This is a question often asked by fabricators and steel service centers looking into the purchase of a new machine: should they buy a plasma cutting machine or an oxy-fuel burning machine? Another question frequently posed: should I cut this part with oxy-fuel or with plasma? Of course, this debate is limited only to those who only work with mild steel, since oxy-fuel won’t cut stainless or aluminum plate.