Laser cutting machine USES high power density laser beam to illuminate the material, so that the material is heated to the state of melting or vaporizing very quickly.Laser processing has high efficiency, high energy density and flexibility, no matter from the accuracy, speed or efficiency, is the only choice of all walks of life.

When the laser is absorbed and transformed into heat energy by the processed material, the surface of the material will change with different power density. As the temperature increases, the material will undergo phase transition, melting, vaporization and other state changes. Different states and changes have a great impact on the absorption of the laser.

Many sheet metal processing customers in the purchase of fiber laser cutting machine, will ask whether the fiber laser cutting can cut aluminum, copper and other high anti - material problems.In fact, a few years ago, optical fiber laser cutting machine can cut aluminum plate, after repeated attempts to innovate, cutting the quality of high-reflective materials is also getting higher.

Method 1: judging by laser output wavelength

For different output wavelength laser;Different materials exhibit different absorption rates (high or low).

Method 2: judging by surface structure

The smoother the surface of the material, the lower the absorption rate of the laser.If smooth enough (even stainless steel), for laser processing is also high.

Method 3: judging by resistivity

Generally speaking, the smaller the resistivity of the material, the lower the absorption rate of the laser (high inverse).The higher the resistivity, the higher the absorption rate.

Method 4: judge the surface state

Material surface temperature (solid, liquid), the same laser absorption rate is different (high or not).Generally speaking, the higher the temperature or the liquid surface, the higher the absorption rate of the laser.The absorption rate of a cold or solid state is usually lower than that of a liquid state.