The invention discloses a method for surface treatment of an
aluminium alloy and a product of the
aluminium alloy. The method comprises the steps of
punching the
aluminium alloy into a required shape; conducting mechanical
polishing on the
aluminium alloy which is subjected to punch forming; conducting
degreasing treatment on the
aluminium alloy which is subjected to mechanical
polishing in a
degreasing agent; placing the
aluminium alloy which is subjected to
degreasing treatment into an acid liquor tank for first-time
anodic oxidation; placing the aluminium alloy which is subjected to first-time
anodic oxidation into dye for dying, and conducting hole sealing treatment after dying; conducting
screen printing on the surface of the aluminium alloy which is subjected to dying and hole sealing treatment with photosensitive ink, and conducting
exposure, developing and photocuring treatment; conducting oxidation film removing treatment on the printed aluminium alloy in an alkaline solution; conducting
sand blasting treatment on the treated product of the aluminium alloy; conducting second-time
anodic oxidation on the product of the aluminium alloy, which is subjected to
sand blasting treatment, and conducting hole sealing treatment on the product which is subjected to second-time anodic oxidation; and removing the photosensitive ink from the surface of the product of the aluminium alloy. The product of the aluminium alloy is processed by the method.