Potassium chloride-type galvanizing plating solution and its preparation method

A potassium chloride-type, electroplating solution technology, applied in the field of electroplating solution, can solve the problems of poor brightness and brittleness, etc., and achieve the effects of good ductility of the coating, good positioning of the coating, and good stability of the plating solution

Inactive Publication Date: 2012-08-01
TIANJIN JUXING ELECTROPLATING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Many acidic galvanizing brighteners have been developed in China. With different brighteners, there is no big difference in the brightness of the coating. In order to improve the brightness of the galvanized layer and the quality of the coating, a bright acid galvanizing brightener has

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1

[0028] A potassium chloride type zinc plating bath, the solvent is water, and its components are:

[0029] Zinc chloride 70g / L

[0030] Potassium chloride 200g / L

[0031] Boric acid 35g / L

[0032] Softener 8mL / L

[0033] Brightener 0.3mL / L

[0034] The appropriate amount of regulator is 5mL / L.

[0035] Wherein, the softener includes benzalacetone, sodium benzoate and niacin;

[0036] The brightener includes o-chlorobenzaldehyde;

[0037] The regulator includes boric acid, methanol, and sodium benzoate.

Example Embodiment

[0038] Example 2

[0039] According to the components described in Example 1, the electroplating solution was prepared:

[0040] (1) Clean the galvanizing tank and add 1 / 3 of the water;

[0041] (2) Add the formula amount of potassium chloride to the water until all potassium chloride is dissolved, and then dissolve the formula amount of zinc chloride and boric acid in sequence;

[0042] (3) After stirring evenly, cool to room temperature and take the plating solution for analysis. If the concentration is not within the specified range, it must be adjusted before adding additives;

[0043] (4) Turn on the filter to start the cycle, electrolyze the plating solution with a small current density of 0.1-0.15ASD for 4-12 hours, until the color of the plating layer in the low current density area changes from black to light gray, and add the required amount of softener, bright Dissolve and stir all the reagents and regulators.

[0044] The electroplating solution prepared according to the abo...

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PUM

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Abstract

Belonging to the field of plating solutions, the invention relates to a potassium chloride-type galvanizing plating solution and its preparation method. With water as the solvent, the plating solution of the invention is composed of the following components: zinc chloride at a concentration of 50-80g/L, potassium chloride at a concentration of 180-280g/L, boric acid at a concentration of 30-40g/L, a softening agent at a concentration of 6-10mL/L, a brightener at a concentration of 0.1-0.4mL/L, and a proper amount of a conditioning agent. The plating solution prepared by the method of the invention is characterized by fast lightening speed, good leveling, high temperature resistance, and fewer decomposition products.

Description

technical field [0001] The invention relates to the field of electroplating solutions, in particular to a potassium chloride type galvanized electroplating solution and a preparation method thereof. Background technique [0002] Many acidic galvanizing brighteners have been developed in China. With different brighteners, there is no big difference in the brightness of the coating. In order to improve the brightness of the galvanized layer and the quality of the coating, a bright acid galvanizing brightener has been developed. The brightener is mainly It consists of a main brightener, a carrier brightener and an auxiliary brightener. At present, some of the brighteners used in China have good coating brightness, but are prone to brittleness, and some coatings are relatively soft, but the brightness is not good. Contents of the invention [0003] The invention provides a potassium chloride type galvanized electroplating solution with fast light emitting speed, good leveling ...

Claims

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Application Information

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IPC IPC(8): C25D3/22
Inventor 吴忠桥谢永喜
Owner TIANJIN JUXING ELECTROPLATING
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