At that time when the portable CNC cutting machine was carrying out laser cutting work, if you have looked carefully, you firmly believe that we can see more or less that there is a deep connection between the laser cutting speed effect of the handheld laser cutting machine, so when you use the portable CNC cutting machine in the future, do not think that there is no relationship between the cutting speed and the cutting effect. What relevance.
In metal processing, many metal materials, no matter what kind of hardness it is, can be cut by portable CNC cutting machine. In the laser cutting process of the portable numerical control cutting machine, the auxiliary steam body suitable for the material to be cut is added. During steel cutting, oxygen is used as the auxiliary material to generate exothermic chemical reaction oxidation between steam and molten metal, and at the same time, it helps blow away the slag in the slit. For cutting polypropylene, compressed air is used, and inert gas is used for cutting cotton, paper and other flammable materials. The auxiliary vapor entering the nozzle can also cool the focus lens, prevent smoke from entering the lens base to pollute the lens and cause the lens to overheat.
In my opinion, the selection of laser cutting rate of CNC machine tool hand-held laser cutting machine is also very important. The best range of laser cutting rate can be determined according to the selection of machine and equipment or by experiments. Because of the thin thickness of raw materials, different materials, high and low melting point, thermal conductivity size and interface tension after melting, the laser cutting rate also changes relatively.
The main features of the portable CNC cutting machine are as follows:
The quality of the incision can be improved by increasing the cutting speed moderately, that is to say, the incision becomes narrower slightly, the surface of the incision is smoother, and the deformation can be reduced at the same time.
The cutting speed is too fast to make the cutting linear energy lower than the required value. The jet in the cutting seam can not blow off the molten cutting melt immediately and form a large amount of drag. Along with the slag hanging on the incision, the surface quality of the incision decreases.
When the laser cutting speed is too low, because the laser cutting place is anodized by low-temperature plasma arc, in order to maintain the stability of the arc itself, the black spot of anodizing or anodizing area must look for the conductive current area around the slit near the arc, in addition, it will send a large amount of heat to the axial direction of the water jet, so that the incision is widened, and the melted materials on both sides of the incision are at the bottom. The edge agglomerates and solidifies to form the slag which is not easy to clean, and the upper edge of the incision is filleted due to too much heating and melting.
When the speed is very low, the arc will even go out because the incision is too wide. Thus, good cutting quality and cutting speed are inseparable.
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