FIELD: electricity.
SUBSTANCE: invention relates to an electrode device for plasma torches. In an electrode holder or in a holding element to accommodate the emission insert of an electrode, there is a recess or channel open on one side in the direction of the workpiece. Between the hollow space formed by the recess or channel and the emission insert, and the environment there is at least one pressure equalisation passage and / or a temporarily acting pressure equalisation passage passing through the emission insert and / or between a portion of the outer surface of the lining of the emission insert and the inner wall of the recess or channel. In accordance with another version, between the hollow space formed by the recess or channel and a retaining element and the environment there is at least one pressure equalisation passage and / or a temporarily acting pressure equalisation passage passing through the retaining element and / or between a portion of the outer surface of the lining of the retaining element and the inner wall of the recess or channel.
EFFECT: electrode is characterised by reliability and operational safety with good thermal and electrical conductivity.
40 cl, 13 dwg
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