Oxy-gas torch for short duration operational periods - has gas nozzle screwed adjustably into oxygen nozzle; and in specified dimensional ratios

摘要

The oxy-gas torch for short operations comprises a gas nozzle (1) screwed (3) into a concentric oxygen nozzle unit (2). Axial distance between the nozzles is variable; settings are maintained by a locknut (4). Setting range for the axial gap (x) between gas nozzle outlet and oxygen nozzle parallal portion inlet is 1-3 mm. Oxygen nozzle convergence angle (alpha) lies between 80 deg. and 160 deg.; length (1) of its parallel portion between 0 and 1.2 mm. Gas- and oxygen nozzle dias (d1, d2) are in a ratio of between 1:1.5 and 1:3. Usable range of gas to oxygen ratios is from.