Process method for plating cadmium on aluminum bronze part

Abstract

The invention discloses a process method for plating cadmium on an aluminum bronze part. In the steps of the process method for plating the cadmium on the aluminum bronze part, an ultrasonic oil removal mode is additionally adopted, through the ultrasonic oil removal mode, oil on the surface and in a pore cavity of the part can be well removed, and meanwhile a machine body is not corroded. Through the improvement on the pretreatment mode, the problems that surface corrosion exists after the aluminum bronze part is plated with the cadmium, and the surface condition is poor due to an imperfect oil removal mode and an imperfect protecting mode can be completely solved.

Description

technical field [0001] The invention relates to the technical field of cadmium plating, in particular to a process method for plating cadmium on aluminum bronze parts. Background technique [0002] Cadmium metal is a slightly silvery white softer metal that is easy to forge and roll into shapes. Its chemical properties are similar to zinc, and a layer of basic carbonate oxide film can be formed on the surface in humid air. This oxide film can protect cadmium from further corrosion. [0003] Aluminum bronze has high strength and good wear resistance, so it is often used in relatively high-strength screws, nuts, copper sleeves, sealing rings and wear-resistant parts on products. In addition, the hardness of aluminum bronze can be improved after quenching and tempering, and it has good high temperature corrosion resistance and oxidation resistance. It has good corrosion resistance in the atmosphere, fresh water and sea water, so this material is now widely used in the world. ...

AI Technical Summary

Problems solved by technology

In the process of cadmium plating, common processes such as cyanide cadmium plating process can be directly used for electroplating cadmium, but the quality of the film layer is often found to be unqualified. important

[0005] Due to the high content of aluminum and copper in aluminum bronze parts, and the great difference in the chemical activities of aluminum and copper metal elements, common chemical degreasing methods, whether using acid or alkali, will corrode the metal of the body; Solvents, when cleaned by ordinary methods, cannot be removed from the cavity of parts with complex shapes

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