In industrial cleaning, traditional cleaning has various cleaning methods, mostly using chemical agents and mechanical methods for cleaning.

There are mainly mechanical cleaning method, chemical cleaning method and ultrasonic cleaning method. At present, these three cleaning methods dominate the cleaning market in my country, but their application is greatly restricted under the requirements of environmental protection and high precision.

The mechanical cleaning method cannot meet the cleaning requirements of high cleanliness, and it is easy to damage the surface of the workpiece to be cleaned.

Chemical cleaning methods are easy to cause environmental pollution, and the cleanliness obtained is also very limited. Especially when the dirt composition is complex, multiple cleaning agents must be used for repeated cleaning to meet the requirements of surface cleanliness.

Although the ultrasonic cleaning method has a good cleaning effect, it is powerless to clean the sub-micron dirt particles. The size of the cleaning tank limits the scope and complexity of the processed parts, and the drying of the workpiece after cleaning is also a big problem.

Due to the increasing awareness of people's environmental protection and safety, and the stricter requirements of national environmental protection regulations, the types of chemicals that can be used in industrial production cleaning will become less and less.

In this case, laser cleaning technology is gradually replacing traditional cleaning technology due to its incomparable advantages with traditional cleaning technology.

Laser cleaning has the characteristics of no grinding, non-contact, no thermal effect and suitable for objects of various materials, and is considered to be the most reliable and effective solution.

The principle of laser cleaning:

The laser irradiation on the surface of the object to be cleaned can produce at least three effects:

(1) Thermal expansion effect

That is, using the difference in the absorption coefficient of the laser energy of a certain wavelength between the substrate and the surface pollutants, the substrate material and the surface pollutants absorb energy and generate thermal expansion. When the expansion force of the dirt is greater than the adsorption force of the dirt on the substrate, the dirt will be separated from the object surface;

(2) Photolysis or phase transition of molecules

The laser can achieve a high concentration of energy in time and space, and the focused laser beam can generate a high temperature of several thousand degrees or even tens of thousands of degrees near the focus, causing the dirt to evaporate, vaporize or decompose instantly;

(3) Vibration of laser pulse

The surface to be cleaned is irradiated with a high-frequency pulsed laser, and the laser beam can generate ultrasonic waves on the solid surface to generate mechanical resonance to vibrate and fragment the dirt layer or condensate.

Advantages of laser cleaning:

1. Greener

There is no need to use any chemicals and cleaning solutions, and the cleaned waste is basically solid powder, which is small in size, easy to store, recyclable, has no photochemical reaction, and will not cause pollution.

2. Good effect

Laser cleaning is non-abrasive, non-contact, and non-thermal, and will not produce mechanical force on the object to be cleaned, will not damage the surface of the object, will not damage the substrate, and will not produce secondary pollution.

3. Easy to control

The laser can be transmitted through the optical fiber and cooperate with the robot to realize long-distance operation. It can clean the complex parts that are difficult to reach by traditional methods. This feature also makes the safety of operators more secure in some dangerous places.

4. Wide range of uses

Laser cleaning can remove various types of contaminants on the surface of various materials, achieving a cleanliness that cannot be achieved by conventional cleaning. Furthermore, contaminants on the surface of the material can be selectively cleaned without damaging the surface of the material.

5. Low cost

The initial investment of the laser cleaning device is high, but it can be used stably for a long time, with a service life of up to 10 years, low operating cost, high speed, high efficiency, time saving, and a quick return on investment. In the long run, the cost is higher than that of traditional cleaning methods. lower.

Laser cleaner is a new type of cleaning equipment based on laser cleaning technology. Simple operation, easy installation, control and automation; no damage, no consumables, safety and environmental protection, stable system, mainly used in surface paint removal and paint removal.

Laser cleaning machine are used for surface paint removal and paint removal, surface oil, stain, dirt cleaning, surface coating, coating removal, welding surface spray surface pretreatment, stone statue surface dust and attachment removal, and rubber mold residue cleaning.