Optical films are ubiquitous in our lives, from precision and optical pvd coating machine , display equipment to optical film applications in daily life; for example, glasses, digital cameras, various household appliances, or anti-counterfeiting on banknotes technology, can be called an extension of the application of optical film technology. Optical coating technology has spread to all aspects of people's lives, so optical pvd coating machines are also a topic of great concern to everyone. Today, the editor of Huicheng Vacuum will introduce to you how to clean and maintain the optical pvd coating machine during normal operation, hoping to let you know more about the optical pvd coating machine.

First of all, let's introduce the cleaning problem of the optical pvd coating machine: after the equipment is used for a week, because the coating material is not only coated on the surface of the workpiece, but also is non-directional, and the lining plate in the studio is coated, and the thicker the coating, the thicker the coating is. The thickness of the film is due to the loose organization and winding, which absorbs a large amount of gas, causing the pvd coating machine to pump more and more slowly. At this time, the studio and the lining board should be cleaned. If there are unnecessary parts to be removed, they can be cleaned with sandpaper. The lining board can be soaked in an aqueous solution of hydrofluoric acid. The ratio of hydrofluoric acid and water depends on the length of soaking time and the The principle of not hurting the lining.
        Therefore, the lining board must be dried with moisture before installation. Before drying, the moisture of the lining board should be wiped off as much as possible. After cleaning the work frame and other components with sandpaper, all the dust in the vacuum chamber needs to be cleaned up. This can be cleaned with a vacuum cleaner. When the liner is finally installed, both the vacuum chamber and the liner need to be wiped clean with alcohol. If an electron gun and an ion source are used to assist the coating, cleaning may be difficult, and methods such as sandblasting can be used to clean.
 
So how should the optical pvd coating machine be maintained? This needs to be maintained in three aspects
        1. Regularly replace the diffusion pump oil. The diffusion pump oil is used for a period of time, about two months. Due to the long-term high temperature environment, although the diffusion pump is only activated when the vacuum is relatively high, the residual oxygen and other components still cause it to be separated from the diffusion pump oil. Reaction, the diffusion pump oil may also crack at high temperature, which will reduce its quality and prolong the pumping time. Should be replaced when we feel it has been extended too far
        2. Vacuum pump. Mechanical pump oil and maintenance pump oil are used for two months, and the oil quality will change. Because the oil may be sucked into water, impurities and other reasons, the viscosity of the used oil will deteriorate and the vacuum will drop, so it needs to be replaced. If it is a new equipment, it should be replaced in the first half month of use, because during the running-in period, the oil contains a lot of running-in iron powder, which will aggravate the wear and tear.
        3. Clean and hygienic. Regularly keep the equipment and its surrounding environment hygienic, keep the inside and outside of the equipment clean, organize the surrounding environment of the equipment in an orderly manner, and have a good working environment to ensure safety.
 
       After reading some of the above introductions, have you learned something about the usual cleaning and maintenance of the optical pvd coating machine? Later, I will provide you with more knowledge about the optical pvd coating machine, such as the operation principle and usage skills of the optical pvd coating machine, etc. , I hope to help you master more knowledge about optical pvd coating machine.