Benefits of Vacuum Metalizing
Thermal evaporation involves heating of metals in a vacuum chamber to form desired metal layer. This process 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. To vaporize the coating metal, resistance heating, plasma heating or electron beam can be used. 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. 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. Plastic or metal is used as the base material. The surface is first made smooth without mechanical buffing to give it stunning reflection. The outside part of coated metal is called the front face. To prevent damage of the front face, it is covered with a transparent vanish. The part that covers the back of transparent plastic is called second surface coating. The advantage with second surface coating is that the use of plastic as the exposed part. 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. Other metals can also be used to make different ornaments. Large surfaces can be metalized through a continuous 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. 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. Onlime marketing has made it possible for vacuum metalizing service providers to advertise their services. Every company must have a 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. Many vacuum metalizing companies are flexible to meet the demands of different clients. You can always talk to the service providers and get to know all about vacuum metalizing.