Laser cutting machine has been widely used in the sheet metal processing industry, because of its high efficiency, good quality of finished products, flexible processing and other advantages, it has been increasingly favored by the sheet metal processing industry. However, when some customers use the laser cutting machine, they cut out a lot of burrs on the workpiece. Many people think that the quality of the laser cutting machine is a problem. Is this the case?
Not really. In the process of sheet metal processing, the parameter settings of the laser cutting machine, gas purity, etc. will affect the processing quality. Using appropriate and qualified gas, preparing the machine, adjusting the parameters, the workpiece will not appear burrs.
Cause 1: auxiliary gas
Burrs are actually excessive residue particles on the surface of metal materials. When the laser cutting machine is processing the workpiece, the laser beam shines on the workpiece surface, and the energy generated will vaporize the workpiece surface to achieve the purpose of cutting. When cutting, auxiliary gas will be used to quickly blow off the slag on the metal surface, making the cutting section smooth and burr free. Different auxiliary gases shall be used for cutting different materials. If the gas is impure or the flow is low due to insufficient pressure, the slag will not be blown clean and burrs will be formed.
Reason 2: Equipment parameters
Another reason is the setting of device parameters, such as incorrect upper and lower positions of laser focus.
Summary:
If the workpiece has burrs, it can be checked from the following aspects:
1. Whether the cutting gas is not pure enough. If not, replace the high-quality cutting auxiliary gas.
2. Whether the laser focus position is correct, focus position test shall be conducted, and adjustment shall be made according to the offset of focus.
3. If the output power of the laser is enough, check whether the laser works normally. If it works normally, observe whether the output value of the laser control button is correct, and adjust it accordingly.
4. The wire cutting speed of the cutting machine is too slow, so it is necessary to increase the wire speed during operation.
5. The machine is unstable due to the long running time of the machine tool, so it needs to be shut down and restarted to let the machine have a rest.