China cut fiber laser Cutting MachineFocus on sharing knowledge and products in the field of laser cutting machinesThe choice of nozzle is an important part of the cutting process of laser cutting machine. How to choose the nozzle of fiber laser cutting machine with different power?Sheet tube laser cutting machineDuring the laser cutting process, the laser head nozzle collects the capacitance signal and transmits it to the signal processor through the ceramic ring, so as to keep the distance tracking of the laser head to the workpiece during the cutting process of the laser pipe cutting machine, and guide the gas to pass through the workpiece smoothly. , Speed up the cutting speed, take away the slag to protect the inner lens of the laser head.The nozzle types are generally divided into single and double layers. Single layer nozzles are suitable for melting and cutting. Nitrogen is commonly used as auxiliary gas, usually used for cutting stainless steel, aluminum alloy, etc.; double-layer nozzles are used for oxidation cutting, and oxygen is used as auxiliary gas. Carbon Steel Cutting.Nozzle size selection: The size of the nozzle diameter determines the shape of the air flow entering the incision, the gas diffusion area, and the gas flow rate, which in turn affects the removal of melt and the stability of cutting. The air flow entering the incision is large, the speed is fast, and the position of the workpiece in the air flow is appropriate, the stronger the spraying ability to remove the molten material. The user selects the nozzle size according to the laser power used and the thickness of the metal sheet to be cut. Theoretically, the thicker the sheet, the larger the nozzle should be used, the larger the proportional valve setting pressure, the larger the flow, and the pressure can be ensured to cut the effect of normal section.Different power nozzle options for metal laser cutting machine:Laser power≤6000wFor cutting carbon steel, the nozzle diameter is generally double-layer S1.0-5.0E;For cutting stainless steel, use common specification WPCT single-layer nozzle;Laser power≥6000wCutting carbon steel, 10-25mm carbon steel bright surface cutting, the diameter of the cutting nozzle is generally double-layer high-speed E-type S1.2~1.8E; the single-layer fan diameter is generally D1.2-1.8;For cutting stainless steel, use common specification WPCT single-layer nozzle.