![]() The plasma itself conducts electrical current. ![]() This reaction creates a stream of directed plasma, approximately 30,000 F and moving at 20,000 feet per second that reduces metal to molten slag. As the inert gas passes through the channel, the spark heats the gas until it reaches the fourth state of matter. A powerful spark is generated between the electrode and the metal. When you apply power to the negative electrode, and you touch the tip of the nozzle to the grounded metal (or a pilot arc touches), the connection creates a circuit. In the center of this channel, you’ll find a negatively charged electrode. Plasma cutters work by sending a pressurized “gas” (in our case compressed air), through a small channel.
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