Ultrasonic cleaning is the use of ultrasonic generator cross-frequency signal, through the transducer converted into cross-frequency mechanical oscillation and spread to the medium, that is, in the form of "bubbles" in the cleaning solution, resulting in rupture phenomenon. When the "cavitation" reaches the moment when the surface of the washed object breaks, the impact force of far more than 1000 atmospheric pressures is generated, resulting in the dirt in the surface, holes and gaps of the object being dispersed, broken and peeled off, so that the object can achieve purification and cleaning.

Laser cleaning technology refers to the use of high energy laser beam to irradiate the surface of the workpiece, so that the surface of the dirt, rust or coating instantaneous evaporation or stripping, high-speed and effective removal of the object surface attachment or surface coating, so as to achieve a clean process. It is a new technology based on the interaction effect of laser with matter.

The difference between laser cleaning and ultrasonic cleaning is that the laser cleaning operation is very convenient, generally hand-held cleaning can be done without any medium, the surface of the object can be cleaned directly, for large area cleaning and precision parts cleaning effect is very good, the working temperature is -5℃ ~ 50℃, and ultrasonic needs to add cleaning agent, the higher the power density of ultrasonic, the stronger the cavitation effect The faster the speed, the better the cleaning effect, but for objects with very high precision surface finish, the use of long-term high power density cleaning will cause cavitation and corrosion on the surface of the object. Ultrasonic cleaning workpiece size is small, can not remove submicron particle pollution, can not remove coating, etc., these laser cleaning is not a problem.

Laser cleaning features:

1. no grinding, non-contact cleaning, to avoid secondary pollution;

2. high cleaning precision, strong controllability;

3. no consumables, strong environmental protection;

4. laser cleaning can remove different types and different thicknesses of attachments on the surface of various materials;

5. easy to control, power can be, can be hand-held or with the robot to achieve automatic cleaning;

6. high cleaning efficiency, save time;

7. the system is stable, long life;

8. one-time input, economic efficiency.

Modern high-end manufacturing cleaning fields such as aerospace, rail transit, automotive manufacturing and mold industry, etc., have long existed difficult to clean, high precision requirements, slow work efficiency and other pain points, the market demand has also spawned higher industry requirements for laser cleaning industry.

For example, the quality of the mold directly affects the quality of the tire. The surface of the tire mold will have carved patterns or other patterns, and the mold is often used in a high temperature and high humidity environment, so there will be a lot of rubber or other residues remaining in the carved groove, when accumulated to a certain degree, it will affect the shape of the mold and eventually lead to the production of defective products, so it is particularly important to keep the tire mold clean Important.

The traditional cleaning process has the use of ultrasonic cleaning machines, ultrasonic cleaning will have a negative impact on the production of molds, because the process is time-consuming and some molds need to be disassembled during cleaning. In addition, this process can only be used on cooled molds. Only after the mold is cooled, cleaned and reheated can the production of the new round be restarted, which is time-consuming and labor-intensive. Laser cleaning mold is mainly to use the principle of laser cleaning to remove the dirt on the surface of the mold and the residue during production, which is a physical cleaning, efficient environmental protection and pollution-free, and the cleaning effect is good; The traditional cleaning process cleaning mold methods are diverse: sandblasting, dry ice, grinding, chemical scrubbing, etc., the cleaning environment is not good, may produce unnecessary damage. Replacing the original ultrasonic cleaning with laser cleaning will reduce the cost of use by more than 50%, and can greatly improve the qualified rate of comprehensive products.

Compared with traditional cleaning methods such as ultrasonic cleaning and chemical corrosion cleaning, laser cleaning has obvious advantages: it is efficient, fast, low cost, small thermal load and mechanical load on the substrate, and non-damage cleaning; Do not harm the health of the operator; The cleaning process is easy to achieve automatic control, remote control cleaning and so on. Shenzhen Shuidi Laser specializes in laser cleaning business, is the head enterprise in the field of laser cleaning in China, and has accumulated a lot of experience in tire mold cleaning. Now government agencies pay more attention to environmental protection, many traditional cleaning processes are gradually being replaced, laser cleaning will become the mainstream of industrial cleaning, the prospect can be expected!