Laser cutting nozzle, cutting head comprising said nozzle and la

Details Laser cutting nozzle, cutting head comprising said nozzle and la Laser cutting nozzle, cutting head comprising said nozzle and la

1989-01-26

1990-04-03

Kastler, S.

Metallurgical apparatus

Means for cutting solid metal with heat, e.g., blowpipes

21912167, B23K 2614

Patent

active

049134051

ABSTRACT:
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.

REFERENCES:
patent: 4618758 (1986-10-01), Gilli et al.
patent: 4728771 (1988-03-01), Sartorio
patent: 4780592 (1988-10-01), Rothe et al.

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