About Plasma Welding
Plasma is the name given to a high temperature stream of partial lyionizedgasflowing at nearsonicvelocity. It is a mixture of neutralatoms, free electrons that have disassociated from the gasatoms and positively charged gas ions
Plasma welding is similar to TIG welding. The difference is that in plasma welding, the Arc is sharply constricted by a cooled gas nozzle through which a flow of plasma gas misdirected.
Plasma is a hot, ionized gas consisting of approximately equalnumbers of positively charged ions and negativel ycharged electrons. The characteristics of plasma are significantly different from those of ordinary neutralgases, which is why it is considered a distinct fourth state of matter.
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