FIELD: mechanical engineering; welding facilities. SUBSTANCE: invention can be used for welding metal structures. Grid or gauze with clearance coefficient of 0.480- 0.554 and diameter of holes in grid or gauze D=(0.73-0.78)L where L is center-to-center distance of holes is installed in main part of torch nozzle being essentially a ring cylindrical channel. EFFECT: reduced consumption of shielding gas, improved gas shielding in zone of welding by forming laminar flow of gases. 4 dwg
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