GAS NOZZLE FOR A WELDING TORCH, WELDING TORCH, AND CLEANING DEVICE FOR A WELDING TORCH

The invention relates to a gas nozzle (2) and to a welding torch (1) equipped with said gas nozzle (2), a nozzle assembly (3) and with a contact tube (4) that have a artificially produced patina layer (8) for the purpose of reducing the adhesion of welding spatters at least on a partial area of the surface thereof. The invention also relates to a cleaning device for welding torches (1) having a brush (7) provided with bristles (9). These bristles are made of a very soft elastic material, preferably plastic, and abrasive grains (11) are embedded in said bristles.