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Laser drilling technology

Superwave Laser Technology Co.,Ltd | Updated: Mar 19, 2018


Laser drilling technology.


1. Process.
The first step is to learn more about drilling materials and drilling requirements.
The second step is to simulate the experiment and test.
The third step is to design convenient and efficient jig.
Step 4: program design.
The fifth step is to implement effective drilling and necessary testing.
2. Main parameters affecting hole quality.
The process of laser perforation is an extremely complex thermal physical process of laser and material interaction. Therefore, there are many factors affecting the quality of laser drilling. In order to obtain high quality holes, the parameters that affect the quality of punching hole should be analyzed and understood according to the general principle and characteristics of laser drilling. These parameters include the energy of the laser pulse, the pulse width, the defocus, the repetition rate of the pulse laser, and the properties of the processed materials.
3. Auxiliary technology.


In order to improve the accuracy of laser drilling, sometimes need to adopt some auxiliary process procedure and process measures, including: (1) a positive pressure on the surface of workpiece, or with a low pressure on the opposite side of the workpiece, can help remove vaporized material during the process of punching and increases the liquid discharge. (2) install a photodetector in the safe position under the workpiece to detect the penetration of the workpiece in time. (3) use liquid film or platinum to cover the workpiece to reduce the taper of the hole and prevent the liquid from splashing. (4) in order to prevent the melt accumulation in the hole in time, the vaporization temperature can be lower than the material melting temperature of the processed material into the back of the processed workpiece. (5) use laser as the processing tool to make pores in the workpiece and then achieve the desired accuracy with other methods. At present, it is generally used for machining of emery, using punch and wire to finish machining, chemical etching and so on.


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