During the laser cutting process, the nozzle of the laser cutting head 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 cutting head to the workpiece during the cutting process, and guide the gas to pass through the workpiece smoothly. in the nozzle outlet is attached near a high pressure, to accelerate the cutting speed, slag away, protective laser cutting machine within the external optical path intact.
Nozzle type: Laser cutting nozzle into a single layer and a double nozzle, single nozzle for melting the cut, i.e. with nitrogen as an auxiliary gas the gas is usually used for cutting stainless steel, aluminum, brass and the like; double nozzle for ships oxide of cutting, i.e., using an oxygen gas as an auxiliary gas, typically used for cutting steel.
Nozzle size selection: The nozzle diameter determines the shape of the air flow entering the incision, the gas diffusion area, and the gas flow rate, which 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 aperture selected: laser cutting machine power ≤6000w when cutting carbon steel, the nozzle size hole diameter is generally double 1.0-5.0; cut stainless steel, use an ordinary standard single nozzle; laser cutting machine power ≥6000w, cutting steel, 10-25 mm bright steel cutting surface, the cutting nozzle size selected hole diameter is generally 1.2 to 1.8 for the double-speed ; single fan diameter is generally used in 1.2 to 1.8 ; cutting of stainless steel, use an ordinary standard single nozzle.
