LIQUID FUEL WELDING TORCH Russian patent published in 1998 - IPC

FIELD: flame machining; may be used in welding, building up and heating of articles with use of liquid fuel in metal working industry and construction. SUBSTANCE: torch has body with regulating valves, connecting pipes, sprayer, nozzle and additional nozzle secured to head of exterior surface of the first nozzle, with protrusion at flame outlet with respect to internal through a value of one-two diameters of its outlet hole. Internal surface of its cylindrical inlet part is made rough, for instance, by thread cutting. Sprayer is attached to torch head and provided with channels for separate supply of combustible mixture to internal nozzle and to slot between internal and external nozzles and in zone of fuel supply to tail of sprayer, bushing of porous material is installed on it. EFFECT: provision of heat concentration required for welding of article. 2 cl, 2 dwg