真空电镀及工艺流程(Vacuumplatingandprocess)

真空电镀及工艺流程（Vacuum plating and process）真空电镀及工艺流程(Vacuum plating and process)

Vacuum plating and process

Source: the full update training date: 2011 09 month 22 hits: 216 Vacuum evaporation is heated in a high vacuum condition of the metal, melting, evaporation, cooling after forming a metal film on plastic surface. The commonly used metal is aluminum and other low melting point metal.

A method for heating metal: the heat generated by the resistance,

but also the use of electron beam.

In the implementation of evaporation of plastic products, in order

to ensure that the metal cooling heat emitted by the resin to deformation, must adjust the evaporation time. In addition, the metal or alloy melting point, boiling point is too high is not suitable for evaporation.

The plating metal and plated plastic products in the vacuum chamber, using certain methods of heating the plating material, the metal evaporation or sublimation, metal vapor encountered plastic surface cold condensed into a metal film.

Under vacuum conditions can reduce the evaporation of materials in atomic and molecular collision to plastic products and other molecules, reduce the chemical reactivity of the molecules in a gas and steam

source between materials (such as oxidation), thus providing the film

density, purity, deposition rate and adhesion. Usually the vacuum evaporation film for indoor

pressure equal to or less than 10-2Pa, the evaporation source and

the plated film products and high quality requirements of the occasion, requires a lower pressure (10-5Pa).

The coating thickness is 0.04-0.1um, too thin, too thick, low reflectivity; poor adhesion, easy to fall off. The thickness of 0.04 reflectivity is 90%, vacuum ion plating, and vacuum coating. Vacuum plating practice now is a more popular approach, strong sense of products made out of metal and relatively high brightness. Other coating method, low cost, little pollution to the environment, is now widely used in various industries.

Vacuum plating has a wide range of application, such as ABS, ABS+PC material, PC material products. At the same time because of its complex process, environment and equipment requirement is high, the price of water than electroplating expensive. This article provides a brief introduction to the process of product surface cleaning -- "to" - "-- electrostatic primer spray baking primer. Vacuum coating, spray paint, baking finish packing." -- "

The general practice is in the vacuum plating material to spray a layer of primer, and then electroplating. Because the material is plastic, residual air bubbles, the injection of organic gases, and when placed in the inhalation of moisture in the air. In addition, because the plastic surface is not smooth, direct plating of the workpiece