Chemical-deposition nickel-plating method

A process method, the technology of electroless nickel plating, applied in the field of chemical treatment of the surface of metal materials, can solve the problems of acid and alkali corrosion resistance, poor wear resistance and pressure resistance, inconvenience, service life, product hardness, etc., to achieve enhanced Hardness, improvement of product quality, and high alkali corrosion resistance

Inactive Publication Date: 2006-08-09
赖源清 +1
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Problems solved by technology

Although this method is relatively simple in process and low in cost, its product has poor acid and alkali corrosion resistance, wear resistance and pressure resistance, and its service life and product hardness are difficult to meet the increasingly higher requirements of the market.
[0004] In summary, the electroless nickel plating process of the prior art clearly has inconvenience and defects in actual use, so it is necessary to improve

Method used

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  • Chemical-deposition nickel-plating method

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Embodiment Construction

[0028] The electroless nickel plating process of the present invention mainly refers to nickel plating on an aluminum substrate, and generally includes steps such as degreasing-water washing-zinc replacement-water washing-zinc replacement-water washing-electroless nickel plating-water washing-drying, as shown in Figure 1 As shown, and can be subdivided into 27 processes, it is currently the most advanced nickel deposition process in China.

[0029] The first process: ultrasonic degreasing. Using mechanical vibration, the dead corners of the workpiece and the oil and debris in the cracks can be cleaned more effectively.

[0030] The second process: alkaline degreasing. Further remove the oil on the surface of the workpiece, and gradually remove the oxide film on the surface of the aluminum.

[0031] The third process: washing. Make the oil stain on the surface of the workpiece cleaner, and at the same time separate the thick liquid between the tanks, and thoroughly clean the...

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Abstract

This invention discloses a method for Ni plating by chemical deposition including: oil elimination, washing, Zn replacement, washing, Zn replacement, washing, Ni chemical-plating, washing and drying. This invention applies an advanced and simple Ni-chemical deposition method, combines a method of high and low NiP and Zn-dip to operate them independently so as to replace the traditional Ni-plating and the continous process method.

Description

technical field [0001] The invention relates to the field of chemical treatment on the surface of metal materials, in particular to an electroless nickel plating process on an aluminum substrate. Background technique [0002] Electroless nickel plating is also called electroless nickel plating. As the name implies, it is a surface treatment method that attaches metal ions to the plated object without electrolysis. Because it does not need electrolysis, there is no problem of high and low current differences, so the thickness of the entire coating is quite uniform, which reduces the processing procedures and costs of components a lot, so it has gradually replaced nickel plating. . Electroless nickel plating first deposits a layer of nickel on the catalytically active collective surface immersed in the plating bath, so that the reaction continues and gradually forms a protective layer of metal phosphorus-nickel alloy. Due to the existence of phosphorus, the lubricity of this...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/32
Inventor 赖源清徐春波
Owner 赖源清
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