Procedure and installation cutting / laser welding

Installation (1) cutting / laser welding comprising a laser head (2) capable of releasing a laser beam (6) for generating a molten bath (74), said installation also comprising a deenfriamiento device (21) said laser head, said cooling device (21) comprising at least one devortice tube (50) fed with gas, said vortex tube (50) providing at least one output of cold gas (54) quecomunica with said laser head (2 ) such that the cold gas is introduced inside this head laserpara cooling this, and at least one hot gas outlet (56), characterized in that eldispositivo cooling (21) comprises a plurality of vortex tubes (50) are fed gascomprimido.