Nickel-cobalt alloy electroplating technique

An electroplating process, nickel-cobalt alloy technology, applied in the field of nickel-cobalt alloy electroplating process, can solve the problems of high cost, low production efficiency, environmental pollution, etc., and achieve improved neutral salt spray resistance, improved efficiency, and enhanced wear resistance Effect

Inactive Publication Date: 2015-11-18
太仓市金鹿电镀有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a pretreatment process not only has low production efficiency and high cost, but also causes environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A nickel-cobalt alloy electroplating process, comprising the steps:

[0026] (1) Degreasing and derusting: Put the workpiece to be electroplated into the drum, which is equipped with 1 / 2 volume of degreasing and derusting water bath. The degreasing and derusting water bath contains: Accelerator NS2.5g / L, diffusing agent DN1.5g / L, penetrating agent JFC2g / L, sawdust 4g / L, sodium polyacrylate 500001.2g / L, 69wt% nitric acid 20g / L, sodium lauryl sulfate 2g / L, sodium chloride 4g / L, rosin powder 2.5g / L, soak at room temperature for 25min, then wash at a speed of 60r / min for 30min to achieve the purpose of oil and rust removal;

[0027] (2) Ultrasonic cleaning: After degreasing and derusting, the workpiece is ultrasonically treated in an aqueous ethanol solution with an ultrasonic volume fraction of 20% at 40°C for 1-2min, and the ultrasonic frequency is 45Hz; after cleaning, re-inject clean water in the same ultrasonic Wash twice under low conditions, and finally blow dry; ...

Embodiment 2

[0033] A nickel-cobalt alloy electroplating process, comprising the steps:

[0034] (1) Degreasing and derusting: Put the workpiece to be electroplated into the drum, which is equipped with 1 / 2 volume of degreasing and derusting water bath. The degreasing and derusting water bath contains: Accelerator NS3g / L , diffusing agent DN2g / L, penetrating agent JFC2.5g / L, sawdust 4.5g / L, sodium polyacrylate 500001.4g / L, 69wt% nitric acid 25g / L, sodium lauryl sulfate 2.5g / L, sodium chloride 4.5g / L, 3g / L rosin powder, soak at room temperature for 30min, then wash at 80r / min for 45min to achieve the purpose of oil and rust removal;

[0035] (2) Ultrasonic cleaning: After degreasing and derusting, the workpiece is subjected to ultrasonic treatment for 1-2 minutes in an ethanol aqueous solution with an ultrasonic volume fraction of 25% at 40°C, and the ultrasonic frequency is 45Hz; after cleaning, re-inject clean water in the same ultrasonic Wash twice under low conditions, and finally blow...

Embodiment 3

[0041] A nickel-cobalt alloy electroplating process, comprising the steps:

[0042] (1) Degreasing and derusting: Put the workpiece to be electroplated into the drum, which is equipped with 1 / 2 volume of degreasing and derusting water bath. The degreasing and derusting water bath contains: Accelerator NS3.5g / L, diffusing agent DN2.5g / L, penetrating agent JFC3g / L, sawdust 5g / L, sodium polyacrylate 600001.6g / L, 69wt% nitric acid 30g / L, sodium lauryl sulfate 3g / L, sodium chloride 5g / L, rosin powder 3.5g / L, soak at room temperature for 35min, then wash at 100r / min for 60min to achieve the purpose of oil and rust removal;

[0043] (2) Ultrasonic cleaning: After degreasing and rust removal, the workpiece is ultrasonically treated in an ethanol aqueous solution with an ultrasonic volume fraction of 30% at 40°C for 1-2min, and the ultrasonic frequency is 45Hz; after cleaning, re-inject clean water in the same ultrasonic Wash twice under low conditions, and finally blow dry;

[0044...

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Abstract

The invention discloses a nickel-cobalt alloy electroplating technique which comprises the following steps: deoiling and derusting, ultrasonic cleaning, electroplating, dehydrogenation, water repelling treatment, water washing and blow-drying. The technique integrates the deoiling and derusting steps, thereby saving the procedure, lowering the cost and enhancing the efficiency. The ultrasonic cleaning step is added, so that the overall pretreatment is efficient, environment-friendly and pollution-free. In the electroplating process, the pH value of the electroplating solution is 3 or so which is weakly acidic, and the current density is 110 A / dm<2>, so the wear resistance of the electroplating coating is greatly enhanced in the specific electroplating solution; under the condition that the friction rotation speed is 15000 r / min, the reduction quantity is less than 0.02 mu m, and the coating hardness is increased; and when the pulse period is 24ms, the maximum coating hardness is 609HV which is 1.5 times of the conventional nickel-cobalt coating, the surface is smooth, and the average grain size is 14nm or so.

Description

technical field [0001] The invention relates to a nickel-cobalt alloy electroplating process, which belongs to the technical field of electroplating. Background technique [0002] Electroplating is the process of obtaining a metal deposit on a solid surface by electrochemical methods. As an important means of traditional surface engineering, electroplating technology has long been used to provide a corrosion-resistant protective layer and a decorative decorative layer for the surface of the workpiece; or to change the surface properties of the base material to obtain metal or Alloy overlay. Due to the development of aerospace and nuclear material engineering industries and electronic information industries, electroplating methods have been used to prepare different types of new composite materials, including particle-dispersed metal composite materials, short fibers, long fiber winding, whisker-reinforced materials, Layered composite materials and optical composite mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/56
Inventor 支建明
Owner 太仓市金鹿电镀有限公司
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