The choice of the appropriate cutting speed for the metal laser cutting machine is also very important. The best cutting speed range can be selected according to the equipment description or determined by experiment. Due to the different thickness of the material, the material is different, and the melting point is high and low , The thermal conductivity and the surface tension after melting, the cutting speed also changes accordingly. The influence of the cutting speed on the cutting quality:
 

1. Properly increasing the cutting speed can improve the quality of the cut, that is, the cut is slightly narrower, the surface of the cut is flatter, and the deformation can be reduced.

2. The cutting speed is too fast so that the cutting line energy is lower than the required value. The jet in the cutting seam cannot quickly blow off the molten cutting melt immediately, forming a large amount of back drag, which is accompanied by the incision hanging Slag, and the quality of the cut surface is reduced.

3. When the cutting speed is too low, because the cutting location is the anode of the plasma arc, in order to maintain the stability of the arc itself, the anode spot or anode area must find a place to conduct current near the slit closest to the arc, and it will More heat is transferred to the radial direction of the jet, so that the incision becomes wider. The molten material on both sides of the incision gathers and solidifies at the bottom edge, forming a slag that is not easy to clean, and the upper edge of the incision is heated and melted to form a rounded corner. .

4. When the speed is extremely low, the arc will even go out due to the wide incision.
 

To sum up, the good cutting quality and cutting speed of the metal laser cutting machine are inseparable. This requires us to carefully grasp in the actual operation, find the best balance point of speed and quality, and let the equipment play Maximum value!