How to do the passivation of the Aluminum housing?

In our daily life, we often see many Precision Machining Parts like electronic products are using Aluminum housing, which is made of Aluminum alloy materials, and the passivation treatment of Aluminum housing can be applied to all Aluminum and Aluminum alloy surface corrosion resistance.  The surface oxidation resistance of the passivated aluminum housing is increased by more than 5 to 10 times.  So how to do the passivation of the aluminum housing?

Passivation of Aluminum housing:  
Degreasing ----- rinse with flowing water ---- passivation ---- rinse with flowing water ---- dry packing  
1, degreasing: refers to the use of aluminum cleaning agent will be aluminum alloy housing surface oil stains, stains, impurities, dust and other impurities clean, and then with flowing water to clean the cleaning agent on the surface of the workpiece.  
2. Passivation treatment: Soak the cleaned aluminum alloy housing in the aluminum passivation solution at room temperature for 3 minutes.  When the time is up, take out the workpiece and clean it with cleaning.  
3, the aluminum alloy housing has been passivated after cleaning, drying packaging can be.  
The above passivation treatment of aluminum housing is to share here, passivation treatment is a way of processing aluminum housing, this process can greatly improve the corrosion resistance of aluminum alloy housing, prolong the service life of aluminum housing.

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