The laser cutting machines or the laser engravers are equipments that use high technology. The cutting capacities, ie the thicknesses of the metal sheets that can be worked depend basically on the type of material and the power of the laser to be used.
The main feature of Laser cutting is that the material removed is very small, less than 10%, which gives the Laser a high precision and high cutting speed, especially in thin thicknesses.
It works seamlessly with a CAD / CAM system, in which a detailed design is developed and used as guidance in the material that will be done. This process does not require the development of matrices and, moreover, is fast and efficient.
How a co2 laser engraver works?
In the laser cutting process, a device called a blower (a type of turbine) rotates at 900hz and circulates CO2 (carbon dioxide) (hence it is called co2 laser engraver) inside a chamber where there are two electrodes connected to a high voltage source. These two electrodes create an electric field that increases the energy of the gas (CO2) inside the chamber and because of this increase, the electrons of the atoms that form the CO2 become excited and change of orbital level, turning to more external levels.
In order for the cut to be made, a high-power generator produces a radius that is taken to the cutting head, which directs the laser beam through an optical path (through adjustable mirrors). The ray, which until then had low energy density, passes through a focus lens that adjusts the intensity and size of the beam. When it reaches the head of the laser machine, light is concentrated through lenses at a single point, this direction of laser light, occurring in a diameter less than 0.25mm.
More details into its functionality
The focused beam of the fiber laser cutting machinehas a high energy density and is directed to the material to be machined. This is how the cut is done. The energy density of the beam is so great that it “melts” the material in the cut line. In a few milliseconds the laser cutting machine does the work. The system allows complex projects, full of detail and difficult angles, to be perfectly executed.
What kind of materials can be processed?
One of the main advantages of this process is its extreme versatility in processing different materials. The most commonly used are:
- Carbon Steel
- Galvanized Steel
- Stainless Steel
- Aluminum and alloys
- Plastics and Acrylics
- Rubber and Composites
- Paper, Leather and Fabrics
- Glass and Quartz
How does the Laser Cut process occur?
With the understanding that Laser promotes the melting and evaporation of materials in very localized regions, it can be concluded that a high speed, high speed continuous cutting process will only occur when adding to this powerful energy beam A gas jet, which is obviously compatible with the material being processed. This gas is known as Service Gas, Process Gas or Cut Gas and has the ability to expel the particles from the material, as if it were “paving the way for cutting”. The most commonly used Gases are Oxygen and Nitrogen, making the laser engraver machine a good option.…