PLASMA TORCH ELECTRODE STRUCTURE

摘要

An electrode structure is composed of a gas passage containing a cathode ending in a cathode tip adjacent one end of the passage and has an anode electrode adjacent to the other end of the passage. A restriction is formed within the passage between the cathode and anode electrode to restrict the cross sectional area of the passage an accelerate the flow of gas from the cathode toward the anode and thereby increase the arc length and permit a reduced amperage to voltage (A/V) ratio for a given power input to the structure.