How does the embossing aluminium plate get rid of oxidation

- Sep 27, 2017 -

Measures to prevent oxidation of embossed aluminum plates:

1. The degreasing process, use absorbent cotton to wipe wet solvent, after removal of oil pollution, again with a clean cotton cloth is wiped a few times. Commonly used solvents include trichloroethylene, ethyl acetate, acetone, butanone, gasoline and so on.

2. Skim the following solution after chemical treatment: 3-3.5 ammonium hydrogen fluoride, 20-26 chrome oxide, sodium phosphate 2-2.5, 50 to 60 of sulfuric acid, boric acid, 0.4 to 0.6, 1000 in 25 to 40 ° C water dipping 4.5-6 min, the washing and drying. In this way, high bonding strength, processing within 4 h after cementing, applicable to epoxy resin and epoxy - butadiene-acrylonitrile rubber bonding.

3. In the following after degreasing solution for anodized: 22 g/l in sulfuric acid under the dc intensity of 1-1.5 A/dm2 impregnated 10-15 min, again in saturated potassium dichromate solution, in 95-100 ° C under dipping 5 to 20 min, and then washed, dry. After processing, the metal surface with high activity, more easily polluted by dust, moisture, etc. Again so after processing of metal rubber surface should be done as fast as possible.

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