Process method for improving electroplating corrosion resistance

Abstract

The invention relates to the technical field of electroplating corrosion resistance, in particular to a process method for improving electroplating corrosion resistance. The method comprises the following steps of: performing electrolytic degreasing on a workpiece; performing acid pickling and rust removal on the workpiece after overflow water washing; performing alkaline electrolysis oil removal on the workpiece subjected to overflow water washing; performing acid electrolysis on the workpiece subjected to overflow water washing; performing semi-bright nickel plating on the workpiece subjected to overflow water washing; performing full-bright nickel plating on the workpiece plated with the semi-bright nickel; performing chromium plating on the workpiece subjected to overflow water washing; and performing electrolytic passivation on the workpiece subjected to overflow water washing through an electrolytic protective agent, so that the electroplated workpiece is obtained. After nickel and chromium are electroplated on the workpiece, the electrolytic protective agent is added for electrolysis and electrolytic passivation protection of a chromium plating layer, so that the corrosion resistance is improved, and the service life of the workpiece product is effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion electroplating, in particular to a process method for improving anti-corrosion electroplating. Background technique [0002] With the continuous development of electroplating technology and the increasing functional requirements of consumers, in the existing nickel and chromium plating processes, the electroplating products are inconsistent in the electroplating process due to their high and low potential differences and positive and side current efficiencies. The thickness of the coating is uneven, which reduces its corrosion resistance. Nickel and chromium-plated products usually only pass the 24-hour level 7 standard under neutral salt spray test conditions. The products are prone to rust during use, which cannot meet customer needs. Use requirements in different environments (such as: relatively humid kitchen, bathroom, etc.). Contents of the invention [0003] The purpose of the pre...

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Problems solved by technology

[0002] With the continuous development of electroplating technology and the increasing functional requirements of consumers, in the existing nickel and chromium plating processes, the electroplating products are inconsistent in the electroplating process due to their high and low potential differences and positive and side current efficiencies. The thickness of the coating is uneven, which reduces its corrosion resistance. Nickel and chromium-plated products usually only pass the 24-hour level 7 standard under neutral salt spray test conditions. The products are prone to rust during use, which cannot meet customer needs. Use requirements in different environments (such as: relatively humid kitchen, bathroom, etc.)

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