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Electroplating solution, preparation method thereof and galvanization technique utilizing electroplating solution

A technology of electroplating solution and solution, applied in the field of galvanizing process, can solve the problems that cannot be widely used, current efficiency, equalizing ability and deep plating ability cannot be compared, and achieves improvement of deep plating ability and improved uniform plating ability. , the effect of improving the current efficiency

Active Publication Date: 2013-04-03
江西博泉化学有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this alkaline cyanide-free galvanizing process is inferior to alkaline cyanide galvanizing in terms of current efficiency, throwing power and deep plating ability. There is also a certain gap in comparison, which makes this alkaline cyanide-free galvanizing unable to be widely used

Method used

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  • Electroplating solution, preparation method thereof and galvanization technique utilizing electroplating solution
  • Electroplating solution, preparation method thereof and galvanization technique utilizing electroplating solution
  • Electroplating solution, preparation method thereof and galvanization technique utilizing electroplating solution

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Embodiment Construction

[0027] The present invention will be described in further detail below by way of examples.

[0028] Thoroughly clean the electroplating tank, zinc dissolving tank and filter element. The electroplating bath may be an electroplating bath made of polypropylene or polyvinyl chloride resin material. If the electroplating tank and zinc dissolving tank are old tanks, they need to be thoroughly cleaned before use. If they are new tanks, they need to be soaked in 10% warm sodium hydroxide solution before use.

[0029] First of all, it is equipped with a zinc melting tank. Add 2 / 3 of pure water to the zinc dissolving tank, add sodium carbonate to the concentration in Table 1, and slowly add NaOH under stirring. At this time, temporarily add an air duct to help dissolve and prevent NaOH from accumulating at the bottom of the tank and agglomerating. At this time, the solution will release heat, and the temperature of the solution needs to be monitored, and the temperature should not ex...

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Abstract

The invention discloses an electroplating solution which mainly comprises an aqueous solution consists of the following substances: zinc, sodium hydroxide, sodium carbonate, a regulating agent, a plating bath solution, a secondary brightener and a bright-throwing power additive. According to the invention, some additives are added into the electroplating solution to adjust the proper zinc ion concentration and the current density, so that the electroplating solution has perfect throwing power; therefore, the electroplating solution has rather good current efficiency, throwing power and covering power. Thus a coating made of the electroplating solution has a better physical property and is more shiny, more full, more uniform and more exquisite with strong binding capability. The invention also discloses a preparation method of the electroplating solution and a galvanization technique using the electroplating solution.

Description

technical field [0001] The invention relates to a solution for electroplating surface treatment of metal workpieces, a preparation method of the solution and a galvanizing process using the solution. Background technique [0002] The most widely involved electroplating processes in my country are galvanizing, copper, nickel, and chromium, of which galvanizing accounts for 45-50%. [0003] In the galvanizing process, alkaline galvanizing is the most widely used. It has the advantages of low cost, simple plating solution composition, easy wastewater treatment, good bonding force between the coating and the substrate, fine and bright, good toughness, and good durability after passivation treatment. Corrosion and decoration and other advantages. Alkaline galvanizing can be divided into cyanide galvanizing and cyanide-free galvanizing. The plating solution of cyanide galvanizing contains highly toxic cyanide, and the discharged wastewater and waste gas seriously pollute the envi...

Claims

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Application Information

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IPC IPC(8): C25D3/22
Inventor 舒平杜腾辉陈湘国
Owner 江西博泉化学有限公司
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