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What effect does the mister nozzle have on the cutting effect
The mister nozzle of the cutting head is installed at the front end of the processing head, which can help control the flow rate and velocity of the auxiliary gas, thus affecting the quality of the laser cutting machine. Do you know how much different mister nozzle types will affect the finished product? Do you know what common mister nozzles are currently on the market? And do you know how to filter them?
Once the slit is formed, the material is removed from the near vertical cut front (thin melt layer), where the laser energy is absorbed by the base material during the cutting process. The gasification of the heated material, the bottom spray slag, the heat conduction and melting of the material will cause the loss and loss of heat in the cutting process, so in order to meet the processing efficiency, laser power, process parameters, the selection of the optical ratio of the cutting head and the mister nozzle becomes particularly important.
When the cutting speed is slow, it will cause excessive heat deposition on both sides of the slit, resulting in rough fringe and even burning phenomenon. The mister nozzle plays a very important role in laser cutting, and its main purpose is to release the auxiliary gas to the surface of the cutting material and the slit, so that the molten and vaporized base material generated in the cutting process is discharged, leaving a clean incision.
If the mister nozzle is not designed and maintained properly, the processing accuracy is not enough, it will cause the flow rate of the gas to weaken, and the direction of the air flow will become unstable, which will affect the removal of the material during the cutting process * and eventually lead to the cutting effect is not ideal. There are two main mister nozzle designs: "low speed mister nozzle" (gas flow is less than the speed of sound) and "high speed mister nozzle" (gas flow is close to the speed of sound). The factors that affect the performance of the mister nozzle are the air pressure of the cutting head cavity, the mister nozzle diameter, the internal shape of the mister nozzle and the shape of the mister nozzle outlet.
The high-speed mister nozzle works on the same principle as the exhaust gas of rocket and jet engines, accelerating the gas entering the mister nozzle, so the high-speed mister nozzle can produce better results for the cutting of viscous materials.
If the ordinary low-speed mister nozzle is used, the air pressure on the workpiece surface will fluctuate greatly with the change of cutting height, resulting in unsatisfactory cutting effect.
I believe that through the above introduction, as well as the comparison of the two mister nozzles, you should understand how to correctly select the mister nozzle, without affecting the effect of cutting the finished product.
Once the slit is formed, the material is removed from the near vertical cut front (thin melt layer), where the laser energy is absorbed by the base material during the cutting process. The gasification of the heated material, the bottom spray slag, the heat conduction and melting of the material will cause the loss and loss of heat in the cutting process, so in order to meet the processing efficiency, laser power, process parameters, the selection of the optical ratio of the cutting head and the mister nozzle becomes particularly important.
When the cutting speed is slow, it will cause excessive heat deposition on both sides of the slit, resulting in rough fringe and even burning phenomenon. The mister nozzle plays a very important role in laser cutting, and its main purpose is to release the auxiliary gas to the surface of the cutting material and the slit, so that the molten and vaporized base material generated in the cutting process is discharged, leaving a clean incision.
If the mister nozzle is not designed and maintained properly, the processing accuracy is not enough, it will cause the flow rate of the gas to weaken, and the direction of the air flow will become unstable, which will affect the removal of the material during the cutting process * and eventually lead to the cutting effect is not ideal. There are two main mister nozzle designs: "low speed mister nozzle" (gas flow is less than the speed of sound) and "high speed mister nozzle" (gas flow is close to the speed of sound). The factors that affect the performance of the mister nozzle are the air pressure of the cutting head cavity, the mister nozzle diameter, the internal shape of the mister nozzle and the shape of the mister nozzle outlet.
Why choose a high-speed mister nozzle?
Some materials such as stainless steel and aluminum alloy are difficult to ensure that the bottom of the cutting section is completely free of burrs, because their molten metal has a strong viscosity, so it is not easy to be removed in the case of low air flow rate, and re-solidified at the bottom of the section to form burrs.The high-speed mister nozzle works on the same principle as the exhaust gas of rocket and jet engines, accelerating the gas entering the mister nozzle, so the high-speed mister nozzle can produce better results for the cutting of viscous materials.
If the ordinary low-speed mister nozzle is used, the air pressure on the workpiece surface will fluctuate greatly with the change of cutting height, resulting in unsatisfactory cutting effect.
I believe that through the above introduction, as well as the comparison of the two mister nozzles, you should understand how to correctly select the mister nozzle, without affecting the effect of cutting the finished product.