NOZZLE FOR LASER PROCESSING Russian patent published in 1995 - IPC

FIELD: laser surfacing. SUBSTANCE: nozzle has a casing and an insertion installed in it. The insertion has a central hole to pass laser beam. The insertion is installed in the casing with circular gap to feed powder like materials through it into process area from pipe branch, installed perpendicular to nozzle axis. In so doing insertion cut is apart from casing cut by distance equal to 0.1 to 0.7 nozzle diameter. The pipe branch is installed in the upper part of the casing and serves to feed protective gas. Laser beam is directed to the process area through the opening in the casing of the nozzle and the opening in the insertion. The powder like material is feed through the pipe branch into circular cavity between the casing and the insertion, in so doing the beam is immovable, and the piece in process and the material to be used for surfacing are displaced. EFFECT: highly accurate and productive surfacing. 2 cl, 1 dwg