Brush plating technology of aluminium alloy

Abstract

The invention discloses a brush plating technology of aluminum alloy. The technology comprises the following steps: polishing the surface, which will be subjected to brush plating, of an aluminum alloy by abrasive paper to remove the oxide scales; then carrying out cathode electrolysis under a voltage of 10-15 V for 10 to 20 seconds to remove the oil, washing the aluminum alloy by water; performing anode activation by using an activating liquid under a voltage of 12-16 V for 8 to 12 seconds to turn the surface of aluminum alloy into a dark grey color, washing the aluminum alloy by water, wiping the surface to be plated by an alkaline cooper plating solution in the absence of electricity; carrying out copper pre-plating through brush plating under a voltage of 8-10 V for 1 to 2 minutes, washing the aluminum alloy by water; carrying out tin plating through brush plating under a voltage of 8-12 V for 0.5 to 3 minutes, and washing the aluminum alloy by water to finish the brush plating. The technology has the advantages of simple steps and easy operation and control. The voltage and time of brush plating can be reasonably controlled to guarantee the quality of brush plating, the combination between the coating and the substrate is good, bubbling is not easy to happen, thus the corrosion on aluminum alloy is effectively prevented, and the technology is very practical.

Description

[0001] technical field [0002] The invention belongs to the technical field of aluminum alloy processing, and in particular relates to a brush plating process of aluminum alloy. [0003] Background technique [0004] Aluminum and its alloys exist in aluminum alloys in several different forms due to the addition of different alloying elements. Such as: enter the lattice of aluminum in the form of solid solution; appear in the aluminum alloy in the form of microscopic particles of the element itself or in the form of intermetallic compound particles composed of aluminum or other alloying elements. Therefore, different aluminum alloys require different pre-treatment and pre-plating processes, and it is difficult to find a general pre-treatment and pre-plating process. [0005] Contents of the invention [0006] In order to overcome the above-mentioned technical problems existing in the prior art, the object of the present invention is to provide a brush plating process fo...

AI Technical Summary

Problems solved by technology

Therefore, different aluminum alloys require different pre-treatment and pre-plating processes, and it is difficult to find a general pre-treatment and pre-plating process.