How to make the processing surface of the laser cutting machine smoother?

In fact, there are a lot of skills to use a laser cutting machine. If you do not use it in the normal way during the application process, it is basically difficult to guarantee its stable operation. If you want to get its work efficiency If you want to improve, you need to apply a lot of skills in the process of use, as follows:

The kerf width of the arc cutting of the laser cutting machine is 1.5~2 times wider than that of the oxygen-acetylene cutting. As the plate thickness increases, the kerf width also increases. For stainless steel or aluminum with a plate thickness of 25mm or less, low-current plasma arc cutting can be used. The flatness of the incision is very high. Especially for the plate with a thickness of 8mm or less, small edges and corners can be cut, even without processing. Weld directly, which is difficult to obtain with high current plasma arc cutting. This provides convenience for cutting irregular curves and cutting irregular holes in thin plates.

The flatness of the cutting surface refers to the distance between the highest point and the lowest point on the cutting surface of the measured part, and the distance between two parallel lines in the direction of the inclination of the cutting surface. When the CNC cutting machine uses high-energy ion arc cutting, in order to ensure the consistency of its cut width, it is necessary to comprehensively analyze and consider various parameters. This involves the material of the cutting material, the content ratio of various metals, and the grasp of the height of the cutting torch during the cutting process. Under normal circumstances, there is a molten layer about 0.25~3.80mm thick on the surface of the plasma arc incision, but the chemical composition of the incision surface has not changed.

Laser cutting machine uses the plasma arc to penetrate the material surface to achieve the cutting effect. The plasma arc often cuts more metal from the upper part of the incision and the lower part, so that the end face of the incision is slightly inclined. The upper edge is generally square, but sometimes slightly rounded. shape. It may result in the distance between the two cutting surfaces on the upper edge of the incision caused by the cutting beam. When the upper edge of the incision is melted, the distance between the two cutting surfaces immediately below the melted layer is abnormal.

For example, when cutting aluminum alloy containing Mg5%, although there is a 0.25mm thick molten layer, the composition has not changed and no oxides appear. If the cut surface is used for welding directly, a dense weld can also be obtained. When cutting stainless steel, because the heated zone quickly passes the critical temperature of 649°C, chromium carbide will not precipitate along the grain boundaries. Therefore, cutting stainless steel with plasma arc will not affect its corrosion resistance.

According to the above method, the laser cutting machine can be used well. Generally, there is no need to worry about the unevenness of the processed surface afterwards.

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