The influencing factors on the quality of the vacuum coating machine coating

The influencing factors on the quality of the vacuum coating machine coating

Should often clean vacuum chamber, vacuum environment to maintain the health: vacuum health health is first cavity gas. The cavity gas should have enough purity and stability. The second is cavity body health. Cavity should keep the corresponding cleanliness. There can be no dust, waste metal scraps. Because of the metal vapour and gas ionization can make cavity adhesion dirt, should keep clear of in time. Otherwise, accumulate over a long period will be more difficult to remove. Only guarantee the vacuum health can guarantee the quality of coating.
The stability of the gas flow: only the stable flow to maintain the stability of cavity environment, to ensure stable temperature, the thermal stress in the film by uniform stability, ensure effective membrane adhesion strength.
  The stability of the vacuum, vacuum degree to produce a great impact on the various types of production process. The coating process is no exception. Such as material in vacuum, the boiling point is lower than in the atmosphere, under the condition of vacuum can lower the temperature of the material needed for a large amount of evaporation, and in the vacuum coating interior coating material can be evaporated at lower temperatures. Corresponding less oxygen in low vacuum area, the possibility of oxidation was greatly decreases, and vacuum coating can get high purity has the practical value of the coating layer. So the stability of the vacuum degree can effectively guarantee the experiment parameters, ensure the quality of coating.
   Circulating water cooling in time (mainly pump can work properly) : an effective cooling circulating water is also a stable experimental conditions and the experimental parameters. The main equipment is pump. So in determining the water tank filled with water under the premise of enough to ensure the normal work of the pump.