6 Key point To make bright surface when do high power laser cutting
1.Cutting speed adjustment of high power laser cutting:
Compared with normal cutting, high-power cutting speed will be greatly improved, but the appropriate cutting speed is more important, which will directly affect the product cutting effect.
If the cutting speed is too fast, the burning will be incomplete and the workpiece will not be cut through. If the cutting speed is too slow, it will cause excessive burning. Therefore, when debugging high-power bright surface cutting, we will pay attention to and measure whether the section is normal or cut Try to increase the speed while not being transparent.
2.Nozzle height adjustment of high power laser cutting:
Bright surface cutting has higher requirements for the propagation of the beam, the purity of oxygen, and the direction of gas flow, and the height of the nozzle will directly affect the changes of these three points, so we need to appropriately adjust the height of the nozzle during high power cutting. The lower the nozzle height is, the closer it is to the plate surface, the higher the beam propagation quality, the higher the oxygen purity, and the smaller the gas flow direction, so the lower the nozzle height is, the better the cutting process is without affecting the induction.
3.Cutting pressure adjustment:
When adjusting the pressure of oxygen, we must pay attention to the pressure. Of course, we should also pay attention to the control range of the proportional valve: Generally, the closer to the minimum control range of the proportional valve, the brighter the cut section, but in order to ensure the stability of the effect when cutting carbon steel plates with the same thickness and different quality, we will It is best to increase the proportion based on the cross-section air pressure.
4.Cutting power adjustment of high power laser cutting :
The principle of cutting air pressure, the energy we use in cutting different plate thickness is also different. Law: As the thickness of the plate increases, the energy required also increases.
5.Focus size adjustment of high power laser cutting :
After the fiber laser is launched, the light beam focused on the nozzle mouth through diffusion is diameter, and the nozzle we use for bright surface cutting is relatively small, plus external factors, if our focus is adjusted too large, it will cause the light spot to be incident On the cutting nozzle, the cutting nozzle is directly damaged and the airflow direction is changed, which affects the cutting quality.Excessive focus adjustment may also cause the nozzle to become hot, affect the follow-up induction, and cause unstable cutting. Therefore, we should exclude the external factors, and then find the maximum focus value that the nozzle size can withstand, and then adjust it.
6.Choice of nozzle size of high power laser cutting :
Bright surface cutting requires very high airflow. In theory, the angle of airflow and spot diameter is one of the most direct factors that can affect the cutting surface of bright surface. Because the included angle of the beam diameter is generally small, in order to match it, the size of the included angle of the airflow needs to be controlled within a smaller range. Therefore, in general, we choose smaller nozzles for bright surface cutting, and to a certain extent, the smaller the nozzle, the brighter the cut section and the better the effect.
IN the end:
The technical skills to make high power laser cutting ,to make bright surface cutting technology are mainly focused on the following six points: cutting speed, nozzle height, cutting pressure, cutting power, cutting focus and nozzle size. Use proper speed, lower nozzle height, smaller cutting pressure, power suitable for plate thickness, suitable focus, smaller
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