LASERSCHNEIDDUESE, SCHNEIDKOPF MIT EINER SOLCHEN DUESE UND VERWENDUNG BEIM LASERSCHNEIDVERFAHREN.

摘要

The invention relates to a laser cutting nozzle comprising at least two subsequent coaxial sections, the inside diameter of the first section decreasing from its inlet diameter to its outlet diameter and being devoid of a sharp corner, the inner envelope being tangent at its outlet to a cylinder having a diameter d, the second section being cylindrical and having a diameter D and a length l, the ratio D/d being between 1.1 and 1.3 and the ratio l/d being between 0.35 and 1. It relates to a laser cutting head comprising this nozzle and to a laser cutting method employing these elements.