How to choose the nozzle for laser cutting head
Options can be selected from the following aspects:
Processing requirements: The single-layer nozzle used in laser equipment is mainly used for nitrogen cutting of stainless steel and aluminum plates; The double-layer nozzle is mainly used for oxygen cutting of carbon steel.
Material: There are two commonly used materials for nozzles – copper and brass. Copper has better conductivity and thermal conductivity than brass.
Size: The aperture size of the nozzle determines the gas flow rate and the shape of the gas field. Generally, when cutting thin plates below 3mm, it is recommended to use a nozzle with a diameter of 1mm, while for cutting plates above 3mm, it is recommended to use a nozzle with a diameter of 1.5mm. For cutting plates above 10mm, it is recommended to use a nozzle with a diameter of 2mm or more.
Processing accuracy: A good laser nozzle should have a concentricity of 0.03mm, and nozzles with a size of 1.0mm or less should have a concentricity of 0.02mm. High precision concentricity nozzles can not only reduce the initial debugging during the processing, but also effectively avoid high-energy laser hitting the inner wall of the laser head, thereby avoiding damage to the laser head.
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