Traditional cleaning methods in industrial manufacturing include chemical cleaning, dry ice cleaning, sandblasting, mechanical grinding, ultrasonic cleaning, etc. Laser cleaning technology was introduced and applied as early as the 1980s, but until now, most industrial cleaning methods still use traditional methods. With the enhancement of national environmental awareness in recent years and the improvement of users' requirements for product cleaning effects and speed, laser cleaning has gradually entered the market.
The principle of laser cleaning machine can be divided into three parts: gasification decomposition, crushing and peeling, and vibration ejection.
The principle of laser cleaning is to use a high-energy-density laser beam to irradiate and clean the workpiece. Because its action time is extremely short, it can instantly generate a large acceleration blasting impact force, so that the pollutant particles are separated from the adsorption on the surface of the substrate. Because the pulse width of the laser beam is very small, under the repeated impact of the pulse, the substrate will produce ultrasonic vibration, thereby generating an impact to break the pollutant particles and eject them from the surface of the substrate.
Laser cleaning machines are mainly designed for metal materials, and the most common metal cleaning is to remove rust. The chemical composition and absorption rate of rust and the substrate are different. After rust absorbs laser energy, its temperature rises and gasifies and decomposes. After chemical blasting, physical vibration ejects dust to achieve the effect of cleaning rust.