FIELD: equipment for welding tubular wire carcasses of metalloplastics tubes, net filters. SUBSTANCE: roller electrode of head is in the form of rotor with welding ring rigidly secured to it; roller electrode is mounted with possibility of rotation on stator. Rotor is in the form of disc with radial ducts and annular lid fluid-tightly mounted on end of disc. Rotor and disc restrict evaporation cavity filled with porous material. Welding ring is mounted on outer generatrix of disc. Outside of roller head spring unit is mounted on axle rigidly secured to stator. Cooling system provides possibility for draining cooling medium to atmosphere. EFFECT: improved simplified design of roller head providing its enhanced reliability and repairability, increased useful life period. 1 dwg
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