Many people pay attention to the cutting speed and cutting quality when using a portable cutting machine for cutting operations. They think that this is a direct reflection of the quality of a cutting machine. Let ’s take a look:
The cutting speed range of the portable CNC cutting machine can be selected according to the equipment description or determined experimentally. Because of the thickness of the material, different materials, high and low melting points, thermal conductivity, and surface tension after melting, the cutting speed is also corresponding. Variety. When the cutting speed is too low, because the cutting place is the anode of the plasma arc, in order to maintain the chaos of the arc itself, the anode freckles or the anode area must find a place for conducting current around the slit closest to the arc, and at the same time it will direct the path of the jet. More heat is transferred to the incision, so the incision is widened, and the melted material on both sides of the incision will be extracted and solidified at the bottom edge, forming slag that is not easy to clean, and the upper edge of the incision will be rounded due to excessive heating and melting.
It can be seen that good cutting quality and cutting speed are inseparable. When the speed is low, the arc may even extinguish because the cut is too wide.
The cutting range of the portable CNC cutting machine mainly manifests: a moderate improvement in cutting speed can improve the quality of the cut, that is, the cut is slightly narrower, the cut surface is more flat, and at the same time, deformation can be reduced. The cutting speed is too fast so that the line energy of the cutting is lower than The required value is that the jet in the slit cannot quickly blow away the molten cutting melt immediately to form a large back drag. With the dross following the incision, the quality of the incision surface declines.