Zinc-nickel alloy electroplating process for metal surface

Abstract

The invention discloses a zinc-nickel alloy electroplating process for a metal surface, and relates to the technical field of electroplating, wherein the zinc-nickel alloy electroplating process comprises the steps of raw material inspection, chemical oil removal, primary water washing, electrochemical oil removal, secondary water washing, polishing, pickling, hanging, zinc-nickel alloy electroplating, quaternary water washing, drying and detection packaging. The chemical oil removal comprises the steps of treating grease on the surface of a metal component by alkali liquor with saponificationeffect to remove saponifiable grease; primary water washing comprises the steps of washing the metal component subjected to oil removal in the step S2 by flowing hot water flow. According to the zinc-nickel alloy electroplating process, based on the original process, the stirring device is additionally arranged, on one hand, the uniformity and speed of mass transfer in electroplating can be improved, on the other hand, the problem that the thickness of a plating layer is easily increased in a high-current area can be prevented; in addition, the electroplating process of the zinc-nickel alloyelectroplating process is simple, the electroplating effect of the metal surface is improved, and the electroplating cost is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of electroplating, in particular to an electroplating zinc-nickel alloy process for metal surfaces. Background technique [0002] Electroplating is the process of plating a thin layer of other metals or alloys on the surface of certain metals using the principle of electrolysis. Such as rust), improve wear resistance, electrical conductivity, reflectivity, corrosion resistance (copper sulfate, etc.) and enhance aesthetics, and the electroplating zinc-nickel alloy process refers to electroplating a layer of zinc-nickel alloy on the surface of the metal, after electroplating Zinc-nickel alloy metal components have the advantages of excellent corrosion resistance, excellent thermal fatigue resistance and low hydrogen embrittlement. [0003] However, the current electroplating zinc-nickel alloy process is not only cumbersome, but also the thickness of the electroplated layer is uneven after the metal components...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a zinc-nickel alloy electroplating process for metal surfaces, which can effectively solve the current zinc-nickel alloy electroplating process proposed in the background technology. Not only the process is cumbersome, but also the metal After the component is electroplated with zinc-nickel alloy, the thickness of the electroplating layer is uneven, which reduces the electroplating effect of the metal component and increases the cost of electroplating. In addition, in the process of electroplating zinc-nickel alloy, the existing technology lacks a stirring device for the electroplating solution. Stirring treatment, which affects the mass transfer process in electroplating, and it is easy to increase the thickness of the coating in the high current area