The nozzle of the laser cutting machine can assist the rapid ejection of gas, and it can control the area and size of gas diffusion, which will affect the cutting quality of the laser cutting machine.
The user selects the nozzle size according to the thickness of the cut metal sheet.
The diameter of the nozzle determines the shape of the gas flow, gas diffusion area, and gas flow rate into the incision, which is very important for the cutting quality.
Generally, when a laser cutting machine is apply to cut a thin plate of less than 3mm, it is recommend to use a nozzle with a diameter of 1.5mm, and a thickness of more than 3mm is recommend to select a nozzle with a diameter of 2mm. For cutting metal plates of more than 10mm, generally select the nozzle with a diameter of 3mm or more is.
In theory, the thicker the plate, the larger the nozzle should be used, the greater the setting pressure of the proportional valve, the greater the flow rate, and ensure the pressure to cut the normal section effect.