Universal high speed flame spraying burner

摘要

Universal high speed flame spraying burner in which gas and/or liquid fuel together with oxidation gas, pressurised air and/or oxygen are fed through the back section (5) of the burner, the water cooled firing chamber (15), the water cooled expansion nozzle (6) and then into the centre of the hypersonic flame beam. The additive material in wire, rod or powder form can be fed into the burner either from the back axially into the expansion nozzle or radially via two opposite channels (14) into the centre of the expansion chamber. Pref. the radial feed channels are held in place by a tightening nut (10) between the flange (40) of the outer water cover (12) and the flange ring (9) on the outer screw socket (8). The expansion chamber is stepped at the position (16) where the feed channels enter the chamber. At this position the expansion chamber has a cylindrical band (20) and the connection between band and channel (14) is surrounded by a water seal O-ring (21).