Plating solution formula and electroplating method for electroplating thick palladium on stainless steel

A technology of stainless steel and plating solution, which is applied in the field of metal surface treatment, can solve the problems of unreported electroplating palladium solution and difficult control of process parameters, and achieve the effect of not easy to crack, stable palladium plating solution and improved performance

Inactive Publication Date: 2016-03-16
佛山市宝惠不锈钢有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electroplating palladium solution disclosed in the patent document CN101348928B can plate a layer of dense palladium on the surface of the brass substrate at high speed, but its process parameters are difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Bind the stainless steel parts with copper wires, put the parts into the chemical degreasing solution (the chemical degreasing solution contains 10g / L sodium carbonate, 22g / L sodium phosphate and 1g / L emulsifier OP-10), and use Ultrasonic cleaning, the ultrasonic power is adjusted according to the actual situation, the cleaning time is 10min, and then the parts are soaked in hot water for 60S;

[0026] Put the parts into the pickling solution (the pickling solution contains 50mL / L sulfuric acid) for 10S, and then wash it in flowing deionized water for 15S;

[0027] Put stainless steel into the nickel electroplating solution (the nickel electroplating solution contains 190g / L of nickel sulfate, 45g / L of nickel chloride, 21g / L of magnesium sulfate, and 20g / L of boric acid) for nickel plating, and the current density is 2A / dm 2 , the bath temperature is 25°C, the electroplating time is 3min, after electroplating, rinse with flowing deionized water for 10S;

[0028] Put ...

Embodiment 2

[0032] Bind the stainless steel parts with copper wires, put the parts into the chemical degreasing solution (the chemical degreasing solution contains 15g / L sodium carbonate, 26g / L sodium phosphate and 2g / L emulsifier OP-10), and use Ultrasonic cleaning, the ultrasonic power is adjusted according to the actual situation, the cleaning time is 10min, and then the parts are soaked in hot water for 60S;

[0033] Put the parts into the pickling solution (the pickling solution contains 80mL / L sulfuric acid) for 10S, and then wash it in flowing deionized water for 15S;

[0034] Put stainless steel into the nickel electroplating solution (the nickel electroplating solution contains 200g / L of nickel sulfate, 50g / L of nickel chloride, 23g / L of magnesium sulfate, and 22g / L of boric acid) for nickel plating, and the current density is 2A / dm 2 , the bath temperature is 25°C, the electroplating time is 3min, after electroplating, rinse with flowing deionized water for 10S;

[0035] Put ...

Embodiment 3

[0039] Bind the stainless steel parts with copper wires, put the parts into the chemical degreasing solution (the chemical degreasing solution contains 18g / L sodium carbonate, 25g / L sodium phosphate and 3g / L emulsifier OP-10), and use Ultrasonic cleaning, the ultrasonic power is adjusted according to the actual situation, the cleaning time is 10min, and then the parts are soaked in hot water for 60S;

[0040] Put the parts into the pickling solution (the pickling solution contains 90mL / L sulfuric acid) for 10S, and then wash it in flowing deionized water for 15S;

[0041] Put stainless steel into the nickel electroplating solution (the nickel electroplating solution contains 230g / L of nickel sulfate, 55g / L of nickel chloride and 27g / L of magnesium sulfate, and 25g / L of boric acid) for nickel plating, and the current density is 2A / dm 2 , the bath temperature is 25°C, the electroplating time is 3min, after electroplating, rinse with flowing deionized water for 10S;

[0042] P...

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PUM

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Abstract

The invention discloses a plating solution formula and an electroplating method for electroplating thick palladium on stainless steel. According to the plating solution formula, a plating solution comprises 20-30 g/L of tetraammine dichloropalladium, 80-100 g/L of ammonium chloride, 2-4 g/L of sodium ethylenediamine diacetate and 8-12 g/L of alanine. According to the plating solution formula and the electroplating method for electroplating the thick palladium on the stainless steel, the white appearance of the stainless steel is maintained by electroplating the thick palladium on the stainless steel. Nickel plating and copper plating are carried out before electroplating of the stainless steel, so that the performance of a thick plated palladium layer on the stainless steel is improved, the thick plated palladium layer is not prone to generation of cracks, and the palladium plating solution is stable.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, and in particular relates to a plating solution formula and an electroplating method for electroplating thick palladium on stainless steel. Background technique [0002] Thick palladium coating has more superior properties than palladium-nickel alloy coating, such as bright and white color, no sensitive reaction to skin, suitable for all kinds of jewelry. The coating also has low porosity and excellent corrosion resistance. At the same time, the coating is hard and wear-resistant without losing its softness, so it is suitable for surface plating of watch cases, straps, leather buckles and jewelry. [0003] As the electroplating palladium solution, the palladium plating solution described in the patent document CN1289716C can be cited, which contains soluble palladium salt, sulfamic acid or its salt, and the like. A needle-like crystal-like palladium plating layer can be formed on...

Claims

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Application Information

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IPC IPC(8): C25D3/50C25D5/12C25D3/12C25D3/38
CPCC25D3/12C25D3/38C25D3/50C25D5/12
Inventor 杨富国张玉红杨飞
Owner 佛山市宝惠不锈钢有限公司
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