As we all know, speed and quality are often inversely proportional. The pursuit of speed will reduce the quality to a certain extent, and the pursuit of quality will affect the speed. Then, what impact does the cutting speed of metal laser cutting machine have on the cutting quality? Let’s take a look:
It is also important to select the appropriate cutting speed for metal laser cutting machine when cutting. The optimal cutting speed range can be selected according to the equipment description or determined by test. Due to the influence of different material thickness, material quality, melting point, thermal conductivity and surface tension after melting, the cutting speed also changes accordingly. The influence of cutting speed on cutting quality is as follows:
1. Properly increasing the cutting speed can improve the quality of the cut, that is, the cut is slightly narrower, the cut surface is smoother, and the deformation can be reduced
2. If the cutting speed is too fast, the linear energy of cutting will be lower than the required value. The jet in the kerf cannot blow off the melted cutting melt immediately to form a large amount of drag. With the slag hanging on the kerf, the surface quality of the kerf will decline
3. When the cutting speed is too low, because the cutting place 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 conductive current place near the cutting seam closest to the arc, and at the same time, it will transfer more heat to the radial direction of the jet. As a result, the notch will become wider, and the molten materials on both sides of the notch will gather and solidify at the bottom edge, forming slag that is difficult to clean, and the upper edge of the notch will form a fillet due to excessive heating and melting
4. When the speed is extremely low, the arc may even extinguish due to the too wide notch
To sum up, good cutting quality and cutting speed of metal laser cutting machine are inseparable, which requires us to carefully grasp in the actual operation, find the best balance point between speed and quality, and let the equipment give full play to its value!
