Views: 35 Author: Site Editor Publish Time: 10-12-2021 Origin: Site
Laser drilling is the earliest practical laser processing technology, and it is also one of the main application areas of laser processing. The use of traditional processing methods for materials with high hardness and high melting point can no longer meet certain process requirements. The hole diameter produced by the traditional process is large and rough, and it needs to be used for secondary micro-hole processing. But laser drilling is not difficult to achieve. What are the characteristics and advantages of the laser drilling technology of the laser cutting machine? Leapion laser shares are as follows:
Laser drilling technology uses high-power density laser beams to irradiate the processed material, so that the material is quickly heated to the vaporization temperature and evaporates to form holes. Punching is to use a focusing mirror to focus the laser beam on the surface of the metal material to melt it, and at the same time use the compressed gas coaxial with the laser beam to blow away the melted material, and make the laser beam and the material move relative to each other along a certain track, thus forming Cut seams of a certain shape.
1. The laser has good coherence, and the optical system can focus it into a light spot with a very small diameter (less than 1 micron), which is equivalent to a "micro drill" used for drilling.
2. The brightness of the laser is very high. The laser energy density (average energy per square centimeter area) at the focused focus will be very high. The laser output from a common laser can generate energy as high as 109 Joules/cm2. It is enough to melt and vaporize the material, leaving a small hole in the material, just like the one drilled with a drill.
3. Use many light pulses per second (also called high repetition rate laser pulse) as a "drill bit", and the quality of the small holes punched out is better than that of a single light pulse or a few light pulses per second. good.
4. To make the punched holes of high quality, you also need to pay attention to the selection of the laser focus position.
For thicker materials, the focal point of the laser beam should be located inside the workpiece. If the material is thinner, the focal point of the laser beam should be placed above the surface of the workpiece. This arrangement will make the punched holes basically the same size up and down, and no "bucket-shaped" holes will appear.
5. Use a laser to drill the material. The quality of the drilled small holes is not only very good, especially when a large number of the same small holes are drilled, it can also ensure that the size and shape of the multiple small holes are uniform, and the drilling speed is fast. efficient.
1. The precision of laser drilling is very fine:
Laser cutting machine can process small holes: 1.00mm~3.00mm; secondary small holes: 0.40mm~1.00mm; super small holes: 0.1mm~0.40mm; micro holes: 0.01mm~0.10mm; secondary micro holes 0.001~0.01mm ; Ultra-micropore: <0.001mm.
2. Laser drilling without consumables: Laser drilling has little effect on the heat of the workpiece, and there is basically no thermal deformation of the workpiece, so as to avoid the collapse of the material when the material is punched and cut. In addition, the laser head will not contact the surface of the material, and there will be no scratches to damage the workpiece, and the workpiece is guaranteed not to be scratched. The use of laser drilling can almost achieve zero consumables.
3. Almost unlimited perforated materials
The laser beam of laser drilling is highly concentrated in space and time, which can reduce the diameter of the spot to the micron level to obtain a high power density, and can perform laser drilling on almost any material. For example, steel plate microporous mesh, stainless steel microporous mesh, aluminum alloy plate microporous mesh, cemented carbide, etc. can be used for micro-hole drilling, no matter what the hardness, it can be used for non-deformation laser drilling.
In addition, laser drilling is not affected by the shape of the material, because the flexibility of laser drilling is good, all can be processed by laser drilling machine for arbitrary graphics, and other profiles can also be punched.
4. The laser drilling speed is fast, and the drilling surface is smooth and free of burrs. Generally, laser drilling does not require secondary processing, which improves production efficiency and reduces production costs.
For other information and professional consultation on laser cutting machines, please pay attention to Leapion Laser.
