Surface treatment of magnesium alloy die casting

    Magnesium alloy pressure casting surface generally need to pretreatment (cleaning, degreasing, pickling), coating, spray coating (paint, spray, plating metal) and so on. The surface treatment of magnesium alloy die casting usually refers to the coating process, its main function is to form a protective coating on the surface of die casting and the adhesion of the coating is good with paint plastic or metal. At present, in the field of magnesium alloy die casting is mainly used in wet surface treatment method, that is the surface treatment method using treatment solution. The existing surface treatment technology is not the same, according to the film forming conditions, the surface treatment technology of magnesium alloy die casting can be divided into two types: chemical film and anodic oxidation film.

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