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What is the technical principle of laser cleaning machine

Time: 2020-09-23 17:00 Reading: one hundred and seventy-six second

Laser cleaning can be used not only to clean organic pollutants, but also to clean inorganic substances, including metal corrosion, metal particles, dust and so on. Here's how it works Laser cleaning machine What is the technical principle of.

It is based on the laser pulse and the laser induced laser beam cleaning process. Its physical principle can be summarized as follows:

1. The laser beam is absorbed by the contaminated layer on the surface to be treated.

2. The energy density of laser can be adjusted to make the dirt expand when heated. When the expansion force of the dirt is greater than the adsorption force of the dirt on the substrate, the dirt will leave the surface of the object.

The light pulse width must be short enough to avoid heat accumulation that can damage the treated surface.

4. The divergence angle of the laser beam is small and the direction is good. The laser beam can be integrated into different diameter facula through the concentrating system.

5. The absorption of high energy forms a rapidly expanding plasma (highly ionized unstable gas) and produces shock wave.

Each laser pulse removes a certain thickness of contaminated layer. If the contamination layer is thick, multiple pulses are needed for cleaning. The number of pulses required to clean the surface depends on the degree of surface contamination. An important result of the two thresholds is the self-control of cleaning. If the energy density is higher than the first threshold, the contamination will be removed until the substrate material is reached. However, because the energy density is lower than the failure threshold of the substrate material, the substrate will not be damaged.

The above is the technical principle of laser cleaning machine. Compared with traditional cleaning methods such as mechanical friction cleaning and chemical corrosion cleaning, laser cleaning has obvious advantages. It has the advantages of high efficiency, fast speed, low cost, small heat and mechanical load on the substrate, no damage to the operator's health, easy to realize automatic control in the cleaning process, and remote remote control cleaning. Therefore, laser cleaning technology will gradually replace part of the traditional cleaning methods in the future.



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