Losses are inevitable in any machine, including metal laser cutting machines. Over time, users may experience decreased cutting speed and accuracy.
It is a common misconception that a decrease in laser power is the sole cause of these problems. However, there are several factors that can contribute to a decline in laser cutting machine power, not just problems with the laser itself.
The following is an analysis of the reasons for the power decline of fiber laser cutting machines.
Focus position
The position of the focus plays a crucial role in determining the accuracy of laser cutting, particularly with regard to the diameter of the focus spot.
To achieve accurate cutting, it is ideal to have a small focus spot diameter. This creates a narrow gap, which is crucial for achieving high-precision cuts.
The size of the focus point diameter is directly proportional to the focal depth of the focusing lens. The smaller the focal depth of the lens, the smaller the diameter of the focus point.
Distance between nozzle and workpiece
The distance between the nozzle and the workpiece also contributes to the power reduction of a fiber laser cutting machine.
If the distance is too great, it will result in wastage of kinetic energy. On the other hand, if the distance is too close, it will have a negative impact on the dispersion capacity of the cutting products.
The optimal distance between the nozzle and the workpiece is 0.8 mm. To accommodate workpieces with uneven surfaces, the fiber laser cutting machine can be adjusted accordingly during operation.
It is important to maintain consistency in the height of the nozzle and part during the cutting process.
Cut speed
Cutting speed has a significant impact on the power of fiber laser cutting equipment.
The power of the fiber laser cutting machine is directly proportional to the cutting speed.
Furthermore, the cutting quality is related to the quality of the laser beam and the characteristics of the laser beam focusing system. The size of the focused laser beam has a significant effect on the quality of the laser cut.
Auxiliary gas
The size and pressure of the auxiliary gas also have an impact on the power of the fiber laser cutting machine.
It is preferable to use compressed air or inert gas as auxiliary gas.
When processing thicker materials or cutting at a slower speed, it is necessary to reduce the air pressure appropriately. Cutting with lower air pressure can prevent ice from forming on the cutting edge.
Laser power
If all other factors are ruled out, a decrease in laser power can be considered.
Like any other piece of equipment, the components of a metal laser cutting machine will inevitably wear out over time.
The laser is the central and most important component of the metal laser cutting machine. Its power will naturally decrease with prolonged use.
In addition to the factors mentioned above, the performance, size and thickness of the processed materials can also affect the power reduction of the fiber laser cutting machine.
