APPARATUS FOR GAS-FLAME TREATMENT OF METALS Russian patent published in 2003 - IPC

FIELD: processes and equipment for gas-flame treatment of metals, possibly manual and automatic welding, soldering and cutting of metals. SUBSTANCE: trunk with ducts for supplying combustible gas, oxygen for cutting and oxygen for combustion is connected respectively with tubes for feeding combustible gas, oxygen for cutting and oxygen for combustion. Changeable nozzle is made with possibility of mounting in head and it has adaptor with cone like mixing chamber and rod with cone stem arranged in cone like mixing chamber. Mixer is arranged concentrically on rod and it has openings for mixing gases and openings communicating with said openings for mixing gases and designed for feeding combustible gas and oxygen for combustion connected with tubes for feeding respectively combustible gas and oxygen for combustion. Openings for mixing gases are communicated with cone like mixing chamber of adaptor. Cone stem of rod is in the form of swirler with helical surface. Changeable nozzle for gas cutting has rod with central duct for supplying oxygen connected with respective tube. Changeable nozzle for leveling and straightening has changeable tip in the form of sleeve with partition having through holes. Enlarged portion of mixing chamber of nozzle is turned to side of changeable tip. EFFECT: enhanced operational reliability and safety of apparatus due to protection against recoils and explosion proofness, improved gasodynamic operational parameters and repairability. 5 cl, 7 dwg