FIELD: welding in atmosphere of protective gases moving in longitudinal direction. SUBSTANCE: electrode 10 is located in body 1 of welding head and is anchored with the use of electrode collet 5. Electrode collet 5 is installed in central hole of collet holder 3. Tubular clamping core 7 with slots in end facing article is put in through hole of collet holder. Electrode 10 can be taken upwards from collet holder 3 together with clamping core 7. Core is mounted in collet holder with clearance to feed protective gas. EFFECT: simplified design of gear. 2 cl, 1 dwg
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