Surface Defects Cleaning
Surface defects are those small semiconductors that appear on the surface of a material due to different kinds of processes. They can have a variety of shapes including circles, dots, and spots. These types of defects are usually caused by crystalline growth, crack closures, air bubbles, small particles, oxidation, electroplating, and even contamination from petroleum based solvents and organic acids.
These defects can be removed by a variety of techniques, depending on the surface and the type of defect. The following techniques are commonly used in the industry to remove surface defects:
1. Non-abrasive cleaning solution: It is beneficial to clean the surface by using a chemical solution that is not abrasive. This way, surface scratches that can be caused by abrasive cleaning solutions can be avoided. Common non-abrasive solutions include surface active agents, detergents, and solvents.
2. Diamond grinding: Diamond grinding is a very effective method for eliminating surface defects. It is done by using power equipment and diamond dust, which smoothens the surface. This method is most effective for obtaining perfect optical qualities and is used for polishing purposes.
3. Hand Grinding: Hand grinding is also an effective way of removing surface defects, but it is a time-consuming process. It requires the use of abrasive materials and tools to effectively remove surface defects.
4. Sandblasting: Sandblasting is another effective way of eliminating surface defects. It is done by spraying a specific type of abrasive material at high pressure onto the surface. It is useful for cleaning especially stubborn defects.
5. Laser cleaning: Laser cleaning is becoming increasingly popular these days as it is a very effective method for eliminating surface defects. It is done by using a laser beam that vaporizes the surface defects, causing them to disappear.
These methods are used to effectively clean and eliminate surface defects, resulting in an impeccable finish. The nature of the surface and the type of defects determine the best and most effective method that should be used to clean the surface. It is important to consider the advantages and disadvantages of each method in order to choose the most appropriate one for the job.
