What does Vacuum Metalizing Entail
Thermal evaporation involves heating of metals in a vacuum chamber to form desired metal layer. Aluminum is most preferred during vacuum metalizing. This technique is used to coat metals on surfaces of different objects. Vacuum metalizing can either be for protective, functional or decorative purposes. To vaporize the coating metal various heating systems are used. 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. The temperatures must be at the right standard for the metal to vaporize. Lastly there is need to increase the distance which metal travels through space.
Vacuum metalizing can be used for decorating toys and jewelry to give them a metallic sheen that is highly reflective. The original material is either plastic or metal. 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. This part is covered with a transparent vanish to prevent it from wear and tear. Second surface coating is the part that is used on the back of the transparent plastic like on dashboards. The exposed plastic part ensures no damage of the important parts. Aluminum is mostly used because of its conductivity, reflectivity and it is stable in air. Adding color to the topcoat can make different colors of ornaments from red, blue, pink and many others. 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. For vacuum mechanization to be successful there needs to be large volumes of aluminum. Most recently, vacuum metalizing has been widened to include thick films. These coatings are corrosion resistant. 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. All metalized plastics can be reused. When aluminum coating is put in the vacuum chamber it is immediately oxidized. Constant exposure will not change electrical sensitivity.
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. Every company must have a profile. This providers experience will give you insight on the company’s capabilities. Read different reviews from clients and check the ratings. The service provider should be flexible with the clients requirements. To understand vacuum metalizing better you can always talk to the experts.