What does Vacuum Metalizing Entail
Vacuum metalizing involves putting metals in a vacuum chamber to form a metalized layer. Aluminum is most preferred during vacuum metalizing. Vacuum metalizing has many uses such as EMI coating, vapor barriers, metallic finishes, reflective coating and many others. 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. The first step in vacuum metalizing is to choose the right vacuum level. For the metal to vaporize you have to set the right temperatures. 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. The original material is either plastic or metal. The surface needs be made smooth to give it a good finish. The outside part of coated metal is called the front face. This part is covered with a transparent vanish to prevent it from wear and tear. Transparent plastic that is used to cover the back of a dashboard is referred as second surface coating. The exposed plastic part ensures no damage of the important parts. 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. A continuous process is used to metalize large surfaces.
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. Vacuum metalizing has been expanded to include thick films. The coatings on the thick films are resistant to rust. EMI shielding, RFI shielding, ESD shielding and heat shielding are achieved by vacuum metalizing. These shielding processes are cost effective and environmentally friendly. 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.
To ensure plastics and jewelry last for a long time vacuum metalizing is important because of the metallic shine. 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 experience of the providers will give knowledge and insight about the company’s performance. Read different reviews from clients and check the ratings. The service provider should be flexible with the clients requirements. For any further information it is good to contact the service providers.