Vacuum metalizing involves putting metals in a vacuum chamber to form a metalized layer. Aluminum is most preferred during vacuum metalizing. This technique is used to coat metals on surfaces of different objects. Metalizing serves as decorative, functional or protective purposes. To vaporize the coating metal, resistance heating, plasma heating or electron beam can be used. Reflective telescopes are made by vacuum metallization where aluminum deposits are used to make large mirrors. It is important to eliminate air in the vacuum chamber to avoid discolouration when metals are heat at high temperatures. If the temperatures are not correct, the metal will vaporize well. The distance which metal travels needs to be increased.
Toys and jewelry are decorated using vacuum metalizing which makes them glow and become highly reflective. Plastic or metal is used as the base material. Mechanical buffing is not used to make the surface smooth. Metal has an outside part that is coated which is referred as the front face. To prevent damage of the front face, it is covered with a transparent vanish. Second surface coating is the part that is used on the back of the transparent plastic like on dashboards. The benefit of the exposed plastic is that it offers protection. Aluminum is mostly proffered because it is a good conductor of heat, reflects well and is known to be stable in air. By adding color on the topcoat vanish it can appear like gold or copper. Apart from aluminum,copper, silver, gold, chromium and cadmium are also used. Metalizing of large surfaces is done through an uninterrupted process.
Coating can be done on one or both sides once the material is rolled over in a vacuum chamber. It is important to have large volumes of aluminum for evaporation. Most recently, vacuum metalizing has been widened to include thick films. The coatings on the thick films are resistant to rust. EMI shielding, RFI shielding, ESD shielding and heat shielding are done through vacuum metalizing. They are cost effective and environmentally friendly compared to other shielding processes. EMI/RFI shielding can be used in different industries like, telecommunication, electronics, medical, military and many other industries. Recycling of metalized plastics is possible. Oxidation of the aluminum coating takes place immediately it is exposed to air in the vacuum chamber. The electrical sensitivity won’t change after initial exposure.
Plastic and ornaments can last for a long time without getting damaged. You can easily get to know about vacuum metalizing service providers by just viewing sites on the internet. Every company must have a profile. This providers experience will give you insight on the company’s capabilities. Read the reviews from different clients to know which companies are legit and which are fraud. The service provider should be flexible with the clients requirements. To understand vacuum metalizing better you can always talk to the experts.