laser cleaning

1. Principle of operation

Laser cleaning technology refers to the use of high-frequency high-energy laser pulse irradiation of the surface of the workpiece, the coating layer can be instantly absorbed by the focused laser energy, so that the surface of the oil, rust spots or coatings to occur instantaneous evaporation or stripping, high-speed and effective removal of the surface adhesion or surface coating of the cleaning method, and the role of a very short time of the laser pulse in the appropriate parameters will not harm the metal substrate.

Laser cleaning is a new technology based on the interaction effect between laser and material, different from the traditional mechanical cleaning method, chemical cleaning method and ultrasonic cleaning method (wet cleaning process), it does not require any ozone-depleting CFC organic solvents, non-polluting, noiseless, harmless to human body and the environment, is a kind of “green” cleaning technology. It is a “green” cleaning technology.

2. the choice of light source

2.1 Laser light intensity distribution

Single-mode lasers have finer cores, better beam quality than multimode, Gaussian distribution of energy distribution, the highest energy density in the middle, the three-dimensional diagram is a sharp round peak-like

Multi-mode laser core compared to the thick, beam quality compared to single-mode to be poorer, an inverted cup, from the edge of the steep energy distribution compared to single-mode spot average, three-dimensional image of the degree of severity of point of view, multi-mode than single-mode steep a lot.

2.2 Spot Comparison

Gaussian light has a high energy density at the center and low energy density at the edges, so it is easy to cause the energy density at the center to be greater than the damage threshold of the substrate, which is easy to damage the substrate. And the edge is lower than the cleaning threshold of the pollutant, resulting in the edge of the pollutant is not removed.

The center and edge of flat-top light have the same energy density, so it can better solve the problem of Gaussian beam generation and cause less damage to the substrate.

2.3 Model selection

Different modes have different application scenarios, according to the actual application scenarios, select the appropriate laser light source, our company has in-depth research in this area, and developed a special light source for non-metallic and metal laser cleaning, for different applications can be customized program design and development.

3. the field of application

1. metal surface rust removal, paint removal treatment.

2. oil, stain, dirt cleaning;

3. plating, coating cleaning;

4. precision rubber, plastic mold residue cleaning;

5. welding surface cleaning before and after welding, pretreatment of spraying surface;

6. statue surface dust and adhesion removal.

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Technical Advantages

Laser cleaning can replace manual mechanical cleaning, chemical cleaning, sandblasting cleaning, ultrasonic cleaning, dry ice cleaning and other traditional cleaning methods. Sunnyever laser cleaning has many advantages over traditional cleaning methods.