An alkaline galvanized high-purity electroplating solution electroplating pool

Abstract

The invention relates to an electroplating tank for alkaline zinc-plated electroplating liquid high in purity. The electroplating tank comprises a main electroplating tank body, a zinc dissolving tank body connected with the main electroplating tank body through a filtering machine, and an electrolysis cathode vertically arranged on the side wall of the zinc dissolving tank body. The electroplating tank has the advantages that the concentration of zinc ions in the plating liquid can be controlled flexibly by adjusting the height of a telescopic pull rod and controlling the number of zinc balls immersed in the liquid, and therefore the stability of the plating liquid is ensured; the electrolysis cathode in the zinc dissolving tank body can effectively remove metal ion impurities in the electroplating liquid, and therefore the purity of the plating liquid is ensured; the electrolysis cathode is an oval mesh-like roller, the peripheral space is large, and therefore high potential impurities can be effectively removed; a middle ring can remove metal ions like galvanized iron, an inner ring can remove copper ions, in this way, the impurities are classified and removed, and the process of removing the impurities can be more effective; energizing current of the electrolysis cathode is low, and therefore the impurities can be removed without influencing electroplating.

Description

technical field [0001] The invention relates to an alkaline galvanizing electroplating pool, in particular to an alkaline galvanizing high-purity electroplating solution electroplating pool. Background technique [0002] Electro-galvanizing is also called cold-dip galvanizing. The workpiece is placed in the electrolyte, and the electroplated metal is precipitated and deposited on the workpiece to form a coating. The coating is thinner than hot-dip galvanizing, generally 4-12 microns, and the quality of the coating is The most important link is that in the process of electroplating, due to factors such as fast speed, uneven current distribution, and weak dispersion ability of the electroplating solution, the thickness of the coating on each part of the product will be uneven, and the corrosion resistance of the coating mainly depends on Coating thickness and exposure environment, the harsher the service conditions, the thicker the coating is required, and the corrosion resist...

AI Technical Summary

Problems solved by technology

[0003] Traditional alkaline galvanizing directly uses zinc plate as the anode. When the number of anodes is too small, it is easy to be passivated and insoluble. When the number of anodes is too large, the concentration of zinc in the solution will increase, and after the anode is dissolved and shortened, the conductivity will be affected. These Both will affect the stability of the plating solution, and due to the influence of time, many impurity ions will be produced, such as cadmium, lead, copper, iron and other metal ions. The longer the time, the higher the concentration of impurity ions, which will affect the product quality.

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