Main reasons:
1. Improper selection of laser wavelength: The main reason for low efficiency of laser paint removal is the selection of the wrong laser wavelength. For example, the absorption rate of paint by laser with a wavelength of 1064nm is extremely low, resulting in low cleaning efficiency.
2. Incorrect equipment parameter settings: The laser cleaning machine needs to set reasonable parameters according to factors such as the material, shape and dirt type of the object during the cleaning process. If the parameters of the laser cleaning machine are not set correctly, such as power, frequency, spot size, etc., it will also affect the cleaning effect.
3. Inaccurate focus position: The laser focus deviates from the working surface, and the energy cannot be concentrated, affecting the cleaning efficiency.
4. Equipment failure: Problems such as laser module failure to emit light and galvanometer failure will lead to poor cleaning effect.
5. Specificity of the cleaning target surface: Some objects may have special materials or coatings on the surface, which have certain limitations on the effect of laser cleaning. For example, some metal surfaces may have oxide layers or grease, which need to be pre-treated by other methods before laser cleaning.
6. Cleaning speed is too fast or too slow: Too fast will lead to incomplete cleaning, too slow may cause overheating of materials and damage to the substrate.
7. Improper maintenance of laser equipment: The optical system in the equipment, such as lenses or lenses, is dirty, which will affect the laser output and cause the cleaning effect to deteriorate.
For the above reasons, the following solutions can be adopted:
1.Choose the appropriate laser wavelength: Choose the appropriate laser wavelength according to the cleaning object. For example, for paint, a laser with a wavelength of 7-9 microns should be selected.
2.Adjust equipment parameters: Adjust the power, frequency, spot size and other parameters of the laser cleaning machine according to the cleaning needs to ensure that the equipment operates in the best condition.
3. Adjust the focal length so that the laser focus is accurately aligned with the area to be cleaned and ensure that the laser energy is concentrated on the surface.
4.Inspect and maintain the equipment: Regularly check key components such as laser modules and galvanometers to ensure their normal operation. If a fault is found, repair or replace it in time.
5. It is recommended to understand the particularity of the target surface before cleaning and choose a suitable cleaning method.
6. Optimize the cleaning speed according to the different materials and contaminants to achieve the cleaning effect while protecting the substrate.
7. Clean the optical components of the equipment regularly to ensure stable laser energy output and maintain the cleaning effect.
Through the above methods, the cleaning effect of the laser cleaning machine can be effectively improved to ensure the cleaning quality and efficiency.
Post time: Nov-04-2024
