Nozzle Function On Fiber Laser Cutting Machine

Influence of the Nozzle on the Quality of Cutting and Selection of the Nozzle

1) Relationship of the nozzle and the quality of cutting: The quality of cutting can be affected by the deformation of the nozzle or the residue on the nozzle. Therefore, the nozzle should be carefully placed and should not be collided. Residue on the nozzle should be timely cleaned. High precision is required during manufacturing the nozzle, if the cutting quality is poor because of the poor quality of nozzle, please timely replace the nozzle.

2) Selection of the nozzle.

In general, when the nozzle diameter is small, the airflow speed is fast, the nozzle has a strong ability to remove the molten material, suitable for cutting the thin plate, and the fine cutting surface can be obtained; when the nozzle diameter is large, the airflow speed is slow, the nozzle has a poor ability to remove the molten material, suitable for slowly cutting the thick plate. If the nozzle with a large aperture is used to rapidly cut the thin plate, the residue generated may splash up, causing damage to the protective glasses.

In addition, the nozzle is also divided into two types, i.e. a composite type and a single-layer type (see the figure below). Generally speaking, the composite nozzle is used to cut carbon steel, and the single-layer nozzle is used to cut stainless steel.