Electroplating solution for electroplating decorative trivalent chromium on surface of electronic product

An electronic product and decorative technology, applied in the field of electroplating decorative trivalent chromium plating solution on the surface of electronic products, can solve the problems of inability to use irregular workpieces and inner wall deposition of pipe fittings, poor stability of the plating solution, and narrow operating conditions, etc. Achieving the effect of good coverage, stable plating solution and beautiful appearance

Inactive Publication Date: 2014-05-21
WUXI SANZHOU COLD ROLLED SILICON STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Vapor deposition technology has the advantages of low pollution and uniform deposition, but its high cost and poor coverage ability cannot be used for the deposition of irregular workpieces and inner walls of pipe fittings, and it is not conducive to large-scale industrial production
Electrodeposited alloy instead of chromium coating mainly includes Zn-Sn-Co, Ni-P, Ni-W and other ternary alloys. This method has little pollution, but the stability of the plating solution is poor and the operating conditions are narrow.
In contrast, the toxicity of the deco

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A plating solution for electroplating decorative trivalent chromium on the surface of electronic products, the composition of the plating solution is: chromium chloride 86g / L, urea 78g / L, ammonium bromide 52g / L, sodium chloride 40g / L, Boric acid 12g / L, methanol 170ml / L, formic acid 80ml / L, sodium dodecylsulfonate 0.04g / L, ferric chloride 8g / L, and the balance is water.

Embodiment 2

[0017] A plating solution for electroplating decorative trivalent chromium on the surface of electronic products, the composition of the plating solution is: chromium chloride 90g / L, urea 74g / L, ammonium bromide 56g / L, sodium chloride 36g / L, Boric acid 14g / L, methanol 160ml / L, formic acid 100ml / L, sodium dodecylsulfonate 0.03g / L, ferric chloride 10g / L, and the balance is water.

Embodiment 3

[0019] A plating solution for electroplating decorative trivalent chromium on the surface of electronic products, the composition of the plating solution is: chromium chloride 87g / L, urea 77g / L, ammonium bromide 53g / L, sodium chloride 39g / L, Boric acid 12.5g / L, methanol 167ml / L, formic acid 85ml / L, sodium dodecylsulfonate 0.037g / L, ferric chloride 8.5g / L, and the balance is water.

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PUM

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Abstract

The invention discloses an electroplating solution for electroplating decorative trivalent chromium on the surface of an electronic product. The electroplating solution consists of the following components: 86-90g/L of chromium chloride, 74-78g/L of urea, 52-56g/L of ammonium bromide, 36-40g/L of sodium chloride, 12-14g/L of boric acid, 160-170ml/L of methanol, 80-100ml/L of formic acid, 0.03-0.04g/L of sodium dodecyl sulfate, 8-10g/L of iron chloride and the balance of water.

Description

technical field [0001] The invention relates to the technical field of electroplating, in particular to a plating solution for electroplating decorative trivalent chromium on the surface of electronic products. Background technique [0002] Decorative chrome coating has become one of the most widely used decorative coatings in the industry due to its good gloss and corrosion resistance. However, for a long time, the traditional hexavalent chromium electroplating process has many insurmountable shortcomings, such as poor dispersion and coverage, low current efficiency, high electroplating temperature, serious pollution to people and the environment during the electroplating process, and difficult post-treatment of the plating solution. During the hexavalent chromium electrodeposition process, waste water and waste gas contain a large amount of hexavalent chromium, which causes great pollution to the environment, and can cause human kidney failure, heart failure, leukemia, and...

Claims

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Application Information

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IPC IPC(8): C25D3/06
Inventor 刘茂见
Owner WUXI SANZHOU COLD ROLLED SILICON STEEL
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