What does Vacuum Metalizing Entail
Vacuum metalizing involves putting metals in a vacuum chamber to form a metalized layer. The procedure is mostly done on aluminum. This technique is used to coat metals on surfaces of different objects. Metalizing serves as decorative, functional or protective purposes. Resistance heating, plasma heating or electron beam are used to vaporize the coating metal. Vacuum metalizing is used to deposit aluminum on big glass mirrors of reflecting telescopes. When choosing proper vacuum level you have to first eliminate air in the chamber to avoid discolouration that may occur when heating metals at high temperature. If the temperatures are not correct, the metal will vaporize well. The distance which metal travels needs to be increased.
Vacuum metalizing can be used for decorating toys and jewelry to give them a metallic sheen that is highly reflective. The base material can either be plastic or metal. The surface is first made smooth without mechanical buffing to give it stunning reflection. 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. Transparent plastic that is used to cover the back of a dashboard is referred as second surface coating. 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.
The material is mounted in vacuum chamber and unrolled for coating of one side or either side. 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. Industries like telecommunication, electronics, medical and military use EMI/RFI shielding. Recycling of metalized plastics is possible. When aluminum coating is put in the vacuum chamber it is immediately oxidized. The electrical sensitivity won’t change after initial exposure.
Vacuum metalizing ensure ornaments and plastics are durable. If you are not sure where to get the best vacuum metalizing service providers, you can view different sites on the internet. Take a close look at the company’s profile. The capabilities and experience will all be in the company’s profile. 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. You can always talk to the service providers and get to know all about vacuum metalizing.