Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Potassium chloride acidic galvanizing electroplating solution and application thereof

An acid galvanizing and electroplating solution technology, applied in the field of metal corrosion protection and surface treatment, can solve the problems of decreased dispersion ability of the plating solution, poor electrical conductivity, increased electric energy expenditure, etc., and achieve excellent positioning and filling performance, current density Wide range, the effect of reducing chloride ion concentration

Active Publication Date: 2021-01-05
武汉奥邦表面技术有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And if want to reduce the content of chloride ion in the potassium chloride galvanizing waste water, must reduce the total chlorine of the chloride ion content in the electroplating bath namely potassium chloride and zinc chloride, but after reducing the chloride ion concentration, can cause plating bath The dispersing ability is obviously reduced, and it will also cause failures such as low current efficiency, poor conductivity, dark coating, and blackening of the low area, and there will be problems such as voltage increase and energy consumption under the same electroplating current conditions, and the reduction of chloride consumption, but increases the expenditure of electric energy, the loss outweighs the gain

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Potassium chloride acidic galvanizing electroplating solution and application thereof
  • Potassium chloride acidic galvanizing electroplating solution and application thereof
  • Potassium chloride acidic galvanizing electroplating solution and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: the preparation of electroplating solution base liquid

[0041] In the electroplating tank, add 40L of water, then slowly add 3.5kg of zinc chloride and 1.5kg of potassium chloride under strong stirring conditions, and stir until the solids are completely dissolved; take another 20L of deionized water, heat it to 90°C, and Slowly pour 3kg of boric acid into deionized water while stirring, and stir until all the solids are dissolved to obtain a boric acid solution; then pour the boric acid solution into the electroplating tank and mix evenly; pH value, use 10wt.% hydrochloric acid or 10wt.% potassium hydroxide to adjust the electroplating solution to a suitable pH value to obtain the electroplating solution base solution, which can be used for trial plating after electrolysis with a small current.

Embodiment 2

[0042] Embodiment 2: prepare brightener I

[0043] Add 30kg of Gulbert cetyl alcohol polyoxyethylene ether (21) sodium chloropropanesulfonate into the stirring tank, raise the temperature to 40°C, start stirring, then add 15kg of benzylidene acetone, and the benzylidene acetone is in the process of heating up and stirring Will gradually melt and dissolve, continue to stir until the above materials are mixed evenly, then add 55kg of deionized water to the stirring tank, continue to keep warm and stir until a uniform solution is formed, and then discharge after cooling down to room temperature to obtain 100kg of brightener I.

Embodiment 3

[0044] Embodiment 3: prepare brightener II

[0045] The preparation method is the same as in Example 2, and the difference is that the feeding amount of each component is: 25kg Gulbert cetyl alcohol polyoxyethylene ether (15) sodium chloropropanesulfonate, 15kg benzylidene acetone and 60kg deionized water, Obtain 100kg brightener II.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a potassium chloride acidic galvanizing electroplating solution. The potassium chloride acidic galvanizing electroplating solution contains 120 to 150 g / L of KCl, 30 to 40 g / Lof ZnCl2, 25 to 30 g / L of H3BO3, 0.1 to 0.5 mL / L of a brightening agent, 20 to 30 mL / L of a softening agent and 6 to 12 mL / L of an auxiliary agent; in the brightening agent, Guerbet alcohol polyoxyethylene ether halogenated propanesulfonate accounts for 20 wt.%-30 wt.%, and benzalacetone accounts for 10 wt.%-25 wt.%; and the softening agent contains 5 wt.%-10 wt.% of 2,2', 4'-trihydroxy chalcone,10 wt.%-20 wt.% of beta-naphthol polyether sulfonate, 1 wt.%-3 wt.% of nicotinoylurea derivatives, 5 wt.%-10 wt.% of EN 16-80 and 1 wt.%-3 wt.% of sodium benzoate. According to the potassium chlorideacidic galvanizing electroplating solution, the concentrations of main salt and conducting salt in the electroplating solution are greatly reduced, the concentration of chloride ions in wastewater isgreatly reduced, the characteristics of high current efficiency, wide current density range, fine crystallization, excellent dispersion and the like of a traditional potassium salt galvanizing process can still be kept, and excellent leveling and moving performance is shown; and the electroplating solution has the advantages of being low in consumption of the main salt and the conductive salt, saving raw material cost, preventing bath voltage from being increased during electroplating under the same current and avoiding additional increase of the energy expenditure, thereby being suitable forrack plating and barrel plating.

Description

technical field [0001] The invention belongs to the field of metal corrosion protection and surface treatment, and in particular relates to a potassium chloride acidic galvanizing electroplating solution and application thereof. Background technique [0002] With the sharp increase in demand for water resources, water pollution is becoming more and more serious, and people are paying more and more attention to water pollution treatment technology. The removal technology of COD, BOD, nitrogen, phosphorus, heavy metals and other pollutants has been greatly improved. However, in actual production, the content of chloride ions in electroplating wastewater, especially chloride galvanizing wastewater, is the most difficult problem to solve. Since chloride ions in electroplating wastewater are not used by microorganisms, there are relatively few removal technologies , A large amount of chloride enters the environment, which will cause serious harm to the environment and organisms. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/22
CPCC25D3/22
Inventor 吕明威吕志蒋晟张厚
Owner 武汉奥邦表面技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products