Generally,  Aluminum alloy prototype are able to do surface treatment that chemical oxidation, sand blasting, coloring, chemical polishing, spraying, powder spraying,  passivation and so on; The details of process technic as follows:

 (1) Chemical oxidation

The aluminium product and aluminium alloy of chemical oxidation processing equipment have the following characteristics:  easy operation, high production efficiency,  save electricity, wide range of suitability ,There is no limited on size and shape of the parts etc.  The process according to a nature of the solution including  two categories: alkaline oxidation and acid oxidation. 

Sandblasting can remove paint, rust, and residue from oxidation from materials quickly and efficiently. Sandblasting can also be used to change the condition of a metal's surface, such as through removing scratches or casting marks. Sandblasting as a cleaning method has been widely used for over a hundred years. 

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