FIELD: metallurgy.
SUBSTANCE: torch has regulated header for atmosphere air supply to near wall zone of the nozzle. Simultaneously to the zone of porous insert of the torch the natural gas (propane) is delivered. Shape of the torch insert is close to ogival ensuring the laminar flow, as one of the conditions of the torch nozzle and arc reliable protection.
EFFECT: assurance of automatic regulation of pre-set process of shielding gas burning, assurance of stable optimal temperature conditions in the nozzle zone and for arc due to use as the shielding gas the products of natural gas diffusion combustion at atmosphere pressure in the welding torch with tungsten electrode, besides, due to the combustion products of the combustible gas the metal heating prior to welding or welded joint tempering after welding are possible.
3 dwg
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RU2484933C1 |
