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The Principle Of Laser Cleaning Machine

The Principle Of Laser Cleaning Machine

2020-12-09

 The laser cleaning process relies on the characteristics of the light pulse generated by the laser, based on the photophysical reaction caused by the interaction between the high-intensity beam, the short-pulse laser, and the pollution layer. Metal Rust removal mini portable fiber laser cleaning machine. The physical principles can be summarized as follows:

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a) The light beam emitted by the laser is absorbed by the contamination layer on the surface to be treated.


b) Absorption of large energy forms a rapidly expanding plasma (a highly ionized unstable gas), which generates shock waves.


c) The shock wave turns pollutants into fragments and is rejected.


d) The light pulse width must be short enough to avoid heat accumulation that damages the processed surface.


e) Experiments show that when there is oxide on the metal surface, plasma is generated on the metal surface.


Plasma is only generated when the energy density is higher than the threshold, which depends on the contamination layer or oxide layer being removed. This threshold effect is very important for effective cleaning while ensuring the safety of the base material. There is a second threshold for the appearance of plasma. If the energy density exceeds this threshold, the base material will be destroyed. In order to perform effective cleaning under the premise of ensuring the safety of the base material, the laser parameters must be adjusted according to the situation so that the energy density of the light pulse is strictly between two thresholds.


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