What is the reason of vacuum instability of aluminizing machine?

Causes of vacuum instability of aluminizing machine;

1, the coated articles are not thoroughly cleaned, and there are cleaning agents and water residues on the surface;

2. The potential of coated products; .

3, adjust the temperature of the evaporation source, not too low or too high;

4. There are too many impurities in aluminum source, and the general purity is greater than 4 9s or 59s；;

5. The surface temperature of the coated article is unreasonable, and the temperature is too high or too low;

6. Vacuum diffusion pump should change oil;

7. If the electron beam evaporates, adjust the electron beam bombardment position;

8. The vacuum degree of vacuum coating machine is not up to standard.

Extension of knowledge points:

Vacuum aluminizing is to heat and melt aluminum metal until it evaporates in vacuum, and aluminum atoms condense on the surface of polymer materials to form an extremely thin aluminum layer.