Non-cyanogen high-density copper plating solution and Aluminium alloy wheel hub electroplating technique using same

A technology of aluminum alloy wheel hub and copper electroplating solution, which is applied in the field of cyanide-free high-density copper electroplating solution and aluminum alloy wheel hub electroplating process using the plating solution, which can solve the problems of easy foaming, poor coverage in low current density areas, and rising costs and other issues, to achieve the effect of low cost, cost reduction, and simple wastewater treatment

Active Publication Date: 2007-10-31
GUANGZHOU SANFU NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The above-mentioned pre-nickel plating process has the following problems: one is the cost problem. Due to the skyrocketing price of metal nickel, the cost of using the pre-nickel plating process has increased significantly; the other is the use of the pre-nickel plating process, which has poor coverage in low current density areas The low current density area of ​​the wheel shape is prone to foaming

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Wherein, the composition of the cylinder opener is copper sulfate, and the copper ion content is 15g / L; the composition of the accelerator is sodium ethylenediamine tetramethylene phosphonate and potassium tartrate, and its concentration is 250g / L and 60g / L respectively; The composition of the additive is 2-mercaptobenzothiazole with a concentration of 0.3 g / L.

[0046]Adopt the aluminum alloy wheel hub electroplating process of above-mentioned cyanide-free high-density copper plating solution, it comprises the following steps:

[0047] 1) pre-plating treatment;

[0048] 2) Zinc precipitation twice;

[0049] 3) Pre-plating of cyanide-free high-density copper, put the aluminum alloy wheel hub after two times of galvanization into the cyanide-free high-density copper plating solution, wherein the cyanide-free high-density copper plating solution adopts the formula in the above table for electroplating treatment;

[0050] The operating conditions during electropla...

Embodiment 2

[0086] Wherein, the composition of opening agent is cupric chloride, and copper ion content is 20g / L; The composition of accelerator is hydroxyethylidene diphosphonic acid and sodium citrate, and its concentration is respectively 500g / L and 30g / L; Additive The ingredient is 2-mercaptobenzimidazole with a concentration of 0.08g / L.

[0087] Adopt the aluminum alloy wheel hub electroplating process of above-mentioned cyanide-free high-density copper plating solution, it comprises the following steps:

[0088] 1) pre-plating treatment;

[0089] 2) Zinc precipitation twice;

[0090] 3) Pre-plating of cyanide-free high-density copper, put the aluminum alloy wheel hub after two times of galvanization into the cyanide-free high-density copper plating solution, wherein the cyanide-free high-density copper plating solution adopts the formula in the above table for electroplating treatment;

[0091] The operating conditions during electroplating are:

[0092] The pH of the plat...

Embodiment 3

[0115] Among them, the composition of the cylinder opener is basic copper carbonate, and the copper ion content is 16g / L; the composition of the accelerator is aminotrimethylphosphonic acid and sodium gluconate, and its concentration is 400g / L and 50g / L respectively; The ingredients are 2-mercaptobenzimidazole and polyethyleneimine, the concentrations of which are 0.2g / L and 0.1g / L, respectively.

[0116] Adopt the aluminum alloy wheel hub electroplating process of above-mentioned cyanide-free high-density copper plating solution, it comprises the following steps:

[0117] 1) pre-plating treatment;

[0118] 2) Zinc precipitation twice;

[0119] 3) Pre-plating of cyanide-free high-density copper, put the aluminum alloy wheel hub after two times of galvanization into the cyanide-free high-density copper plating solution, wherein the cyanide-free high-density copper plating solution adopts the formula in the above table for electroplating treatment;

[0120] The operatin...

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PUM

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Abstract

The invention discloses a high density copper electroplating liquid without cyanogen and aluminum alloy boss electroplating craft, which is characterized by the following: allocating 250-400ml/l high density copper opening jar agent without cyanogen, 80-120 ml/l high density copper accelerant without cyanogen, 0-5 ml/l high density copper additive without cyanogen and surplus as water; adjusting pH value at 9. 2-10. 0; getting the electroplating liquid; adding following steps between twice depositing zinc step and acid bright coppering step; pre-coating the high density copper without cyanogen; petting the aluminum alloy boss into high density coppering liquid without cyanogen; electroplating; thick-plating; putting the aluminum alloy boss into thick coating liquid; proceeding thick electroplating. This craft can decrease cost and modify electroplating quality.

Description

technical field [0001] The invention relates to a cyanide-free high-density copper electroplating solution and an aluminum alloy wheel hub electroplating process using the plating solution, in particular to a process with a lower cost than nickel plating, without cyanide and strong complexing agent, and simple wastewater treatment The cyanide-free high-density copper electroplating solution and aluminum wheels use this plating solution to replace the pre-nickel electroplating process. This process is a new electroplating process for aluminum alloy wheels that can reduce costs and help improve the quality of electroplating and is environmentally friendly. Background technique [0002] At present, aluminum alloy wheels have gradually replaced steel wheels due to their light weight, good thermal conductivity, and good processability. Due to the complexity of its shape, the aluminum alloy wheel has very high requirements on the electroplating process. The traditional pre-plating...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/38
Inventor 詹益腾谢祥云
Owner GUANGZHOU SANFU NEW MATERIALS TECH
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