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Zinc-magnesium alloy electroplating technology

A technology of alloy electroplating and process, applied in the field of zinc-magnesium alloy electroplating process, can solve the problems of high cost, low production efficiency, environmental pollution, etc., and achieve the effects of improving efficiency, saving procedures, improving air tightness and corrosion resistance

Inactive Publication Date: 2015-11-11
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 zinc-magnesium 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 zinc-magnesium 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 blo...

Embodiment 3

[0041] A zinc-magnesium 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;

[004...

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Abstract

The invention discloses a zinc-magnesium alloy electroplating technology. The technology includes the following steps of oil and dust removing, ultrasonic cleaning, electroplating, hydrogen removing, hydrophobic treatment, washing and drying. According to the technology, the process of removing oil and the process of removing dust are combined into one, so that the processes are omitted, cost is reduced and efficiency is improved. In the electroplating process, additives such as SDMBA-Cl, polyethylene glycol and lauryl sodium sulfate are added in electroplating liquid, so that the deposition effect in the electroplating process is good, the self-corrosion current of an ultimate electroplated layer in a 3.5% sodium chloride solution is lowered, and the corrosion resistance is enhanced. Finally, the zinc-magnesium alloy electroplating technology is good in deposition effect, high in pretreatment efficiency and environmentally friendly.

Description

technical field [0001] The invention relates to a zinc-magnesium 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 means. 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 materi...

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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