OXYGEN CUTTING TORCH FOR STEEL Russian patent published in 1998 - IPC

FIELD: shipbuilding, mechanical engineering, civil engineering; pattern cutting of thin sheet steel. SUBSTANCE: inner and outer nozzles are connected to head. Sleeve is installed with clearance on outer nozzle. Space for delivering air-water mixture to cutting zone is formed between sleeve and nozzle. Space changes into narrowing slot at outlet. Generatrix of cone of sleeve inner surface is tilted to axis of cutting torch at angle of 20-40 degrees. EFFECT: improved quality of pattern-cut blanks, reduced labour input. 2 dwg