| 摘要 |
FIELD: gas-shield welding process with use of non-consumable electrode, namely torches for such welding. ^ SUBSTANCE: torch includes body of collet chuck holder. Said body has cylindrical surface near its working end and it is welded to electrically conducting gas conduit. Collet chuck is mounted in body for securing non-consumable electrode. Nozzle has cylindrical surface passing to cone surface and then again passing to cylindrical surface near its working end. Asbestos-cement insulator is arranged on surface of body of collet chuck holder; brass sleeve is put onto said insulator. Insulator is fixed to body by means of pressure ring-splitter having cylindrical surface passing to cone surface with radial openings. ^ EFFECT: possibility for making small-size torch for welding butts of metallic structures in hard-to-reach places of installation zone. ^ 2 dwg |
