After you use the laser cutting machine to cut the metal, is there a black surface or edge phenomenon? It is mainly caused by the high temperature and oxidation caused by laser cutting.

Why does the laser cutting machine turn black after cutting?

1.Surface treatment: the treatment method of the material surface will also affect the result of laser cutting. For example, if there are impurities such as oil and flash on the surface, they will be baked to form coke when the laser cuts, resulting in black spots on the surface.

2.Material composition: An important factor leading to laser cutting black is the composition of the material. When the laser energy is absorbed, most of the energy is converted into heat, if the material composition contains easily oxidized materials, such as iron, steel and other metals, or wood containing cellulose, it will produce oxidation reaction, resulting in black spots on the surface.

What should I do if the laser cutting machine turns black after cutting? 

1.Improve the material surface treatment method: before laser cutting, the surface of the material is properly treated, which can effectively avoid black spots on the surface of the material. For example, the use of treatment measures such as oil removal and flash removal can make the surface of the material smoother, thereby avoiding the generation of black spots.

2.Reduce the laser power: if the laser power is too high, it will lead to too much heat on the surface of the material, which causes the oxidation reaction of the material, resulting in black spots on the surface. Therefore, the appropriate reduction of laser power is one of the important means to avoid blackening.