A long time ago, laser cutting machines were able to cut aluminum plates. At that time, workers painted the aluminum plates with ink (it is said that the aluminum plate has a high reflective coefficient and is afraid of reflecting the laser). During the cutting process, the parameters of the laser are very difficult to adjust. At that time, only aluminum sheets with a thickness of 1 mm could be cut. After accumulating experience, the incision of the aluminum plate is also very smooth and there is no slag.
Aluminum plate has always been a difficult problem for us in laser cutting, because aluminum plate is a highly reflective material, its absorption rate of laser is low, and laser cutting aluminum plate is difficult, but because of its wide processing requirements, we have to think about how to use laser quickly and safely. of cutting aluminum sheets. Highly reflective materials such as copper plates and aluminum plates can be cut by laser equipment.
In fact, there are still many highly reflective materials such as aluminum. Because laser equipment is really sensitive to returning light, it may run unstable or damage the laser lens during processing, and it requires a higher power laser, which greatly shortens the time. the life of the laser. So, don’t we use a laser cutting machine? Of course not! There are some situations that need to be paid attention to during the processing of aluminum sheets. Aluminum is not resistant to high temperature, and burrs are prone to occur during cutting. The processing technology needs to be patiently debugged. At the same time, pay attention to the speed. If the cutting speed is too fast, it is easy to cause burrs during cutting, and too slow cutting speed may cause cracks near the cutting edge, which will also affect the cutting quality.
Laser cutting aluminum plate also depends on the power of the laser generator. The maximum thickness of 6000W can be cut to 16mm, and the thickness of 4500W can be cut to 12mm, but the processing cost is only high, because it is a highly reflective material, and laser cutting is made by focusing The high-power density laser beam irradiates the workpiece, so that the irradiated material rapidly melts, vaporizes, ablates or reaches the ignition point, and at the same time, the molten material is blown away by the high-speed airflow coaxial with the beam, so as to realize the cutting of the workpiece.
Is The Cut Surface Of Light-Cut Aluminum Sheet As Smooth As Cutting Other Materials?
The incision of the aluminum plate is also smooth. The aluminum plate is only a highly reflective material, which requires a large laser generator. The cutting gas, like other materials, is cut with nitrogen gas, which will not cause the surface to be uneven.
Aluminum plate using laser cutting features:
- Thin cutting seam: The cutting seam of laser cutting aluminum plate is generally 0.1mm-0.2mm
- The cutting surface is smooth: the cutting surface of the laser-cut aluminum plate has no burrs and no slag.
- Small thermal deformation: The laser processing of laser processing has thin slits, high speed and concentrated energy, so the heat transmitted to the material to be cut is small, and the deformation of the material is also very small.
- Material saving: laser processing adopts computer programming, laser equipment can cut different shapes of aluminum plate processing parts, improve the material utilization rate of aluminum plates, and save a lot of material costs.
- The thickness of the aluminum plate that can be cut mainly depends on the power of the laser generator. Generally, the maximum thickness of 6000W can be cut to 16mm, and the thickness of 4500W can be cut to 12mm.
Precautions for laser cutting aluminum plate: Aluminum plate is a highly reflective material, which will cause great damage to the laser, so use it as little as possible. It is recommended that the aluminum plate below 6 mm can be processed by CNC punching machine, and the aluminum plate above 6 mm can be processed by water cutting.
