M6 Single Laser Nozzle For Three-Dimensional 3D Lazer Cutting Machine

General laser cutting nozzles are divided into single and double layers.
Single-layer nozzles are used for melting and cutting, nitrogen is used as auxiliary gas, it is used to cut stainless steel, aluminum alloy, brass, etc.
Double-layer nozzles are generally used for oxidative cutting, using oxygen as an auxiliary gas, usually used for cutting carbon steel.

Single-layer: Melt cutting; Nitrogen; Stainless steel, Aluminum 1. 4-3.0mm
Double layer: Oxidative cutting; Oxygen; Carbon steel;1.5-3.0mm

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When the nozzle diameter is different, the cutting quality of the fiber laser cutting machine will have the following effects:
The nozzles have different diameters, such as φ1.0mm, φ1.5mm, φ2.0mm, φ2.5mm, φ3.0mm. At present, the nozzle aperture usually uses two sizes: φ1.5mm and φ2mm.

1.Sheet thickness below 3mm
The diameter of the copper nozzle is φ1.5mm, which is more suitable for the plate below 3mm, and the cutting surface is thinner. If you use a copper nozzle with a diameter of φ2mm, the cutting surface will be thicker and the corners will melt easily.

2.Sheet thickness above 3mm
When cutting plates with a thickness of more than 3mm, due to the high cutting power, the heat dissipation time is longer, and the cutting time is relatively increased. If a copper nozzle with a diameter of φ1.5mm is used, the gas diffusion area is small and unstable in use, but it can be basically used. However, if a copper nozzle with a diameter of φ2mm is used, the gas diffusion area is large, the gas flow rate is slow, and the cutting is stable.

3.Sheet thickness above10mm
The copper nozzle with a diameter of φ2.5mm can only be used for cutting 10mm or thicker plates.
In short, the size of the nozzle seriously affects the cutting quality and perforation quality. Currently, laser cutting uses nozzles with φ1.5mm and φ2mm apertures.