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Nicochrome electroplating liquid

A nickel-chromium alloy and electroplating solution technology, applied in the field of electroplating solution, can solve the problems of thick plating and thick plating adhesion, uneven distribution and composition of plating, incomplete cathode discharge, etc. The management is easy to grasp and the effect of promoting the application value is good

Inactive Publication Date: 2015-10-28
WUXI QIAOYANG MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carrying out nickel-chromium alloy plating on the basis of trivalent chromium plating solution has many deficiencies, such as Cr 3+ and Ni 2+ It is not completely clear in which form of ligand to discharge at the cathode, Cr 3+ Hydroxyl bridge compounds are formed near the cathode, which causes a large amount of hydrogen evolution in the cathode, resulting in low current efficiency and rough coating; and the stability of the plating solution, the prevention and control of pollution, the uneven distribution and composition of the coating, the thickness of the coating and the binding force of the thick coating. problems etc. are flawed

Method used

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  • Nicochrome electroplating liquid
  • Nicochrome electroplating liquid
  • Nicochrome electroplating liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The nickel-chromium alloy electroplating solution of the present embodiment comprises the component of following concentration:

[0017]

[0018] The configuration process of the electroplating solution in this embodiment is as follows: accurately take each raw material, first boil the sodium iodate for 15-20 minutes for later use, then put other raw materials in a 1-liter container in turn, add 800 ml of water and heat to 80-90 ° C to stir and dissolve, continue After stirring for 5 minutes, cool down, and finally add boiling sodium iodate solution, add water to dilute to 1 liter, stir evenly, control the temperature at 60-70°C, and test plating for 1 hour.

[0019] The process conditions when electroplating with the electroplating solution of this embodiment are: temperature 60 ~ 70 ℃, cathode current density 3A / dm 2 , the anode is a 50×100mm nickel plate, the cathode is a 25×50mm copper sheet, hang plating for 10min.

Embodiment 2

[0021] The nickel-chromium alloy electroplating solution of the present embodiment comprises the component of following concentration:

[0022]

[0023] Refer to Example 1 for the configuration of the electroplating solution and the electroplating process in this embodiment.

Embodiment 3

[0025] The nickel-chromium alloy electroplating solution of the present embodiment comprises the component of following concentration:

[0026]

[0027]

[0028] Refer to Example 1 for the configuration of the electroplating solution and the electroplating process in this embodiment.

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Abstract

The invention relates to nicochrome electroplating liquid which comprises the following components by concentration: 40-50 g / L of nickel chloride, 60-70 g / L of chromium sulfate, 25-30 g / L of lactic acid, 50-60 g / L of ammonium sulfate, 45-55 g / L of potassium sulphate, 20-30 g / L of sodium iodate, 3-4.5 g / L of saccharin and the balance of water. Based on the formula, the nicochrome electroplating liquid is stable in performance and small in environmental pollution.

Description

technical field [0001] The invention relates to an electroplating solution, in particular to a nickel-chromium alloy electroplating solution, belonging to the field of electroplating. Background technique [0002] Electroplated nickel-chromium alloy has attracted people's attention for its excellent coating performance, such as corrosion resistance, wear resistance and good decorative effect of the coating. The application range is extremely wide, and some coatings can replace chrome-plated products, especially depositing a layer of nickel-chromium alloy on the surface of metal materials, which can improve the corrosion resistance of the substrate, thereby reducing the amount of stainless steel and saving chromium resources. [0003] The electroplating nickel-chromium alloy technology in the early years used hexavalent chromium plating solution. Because hexavalent chromium is a highly toxic and carcinogenic pollutant, the rapid development of this technology has been hindere...

Claims

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Application Information

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IPC IPC(8): C25D3/56
Inventor 沈秋
Owner WUXI QIAOYANG MACHINERY MFG
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