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Method for aluminum alloy electroplating powder cloud nickel composite coating

A composite coating and aluminum alloy technology, applied in coatings, electrolytic coatings, etc., can solve the problems of poor surface corrosion resistance, large consumption of electroplating materials, and high discharge of electroplating wastewater, so as to shorten production time and simplify the electroplating process , The effect of electroplating process optimization

Inactive Publication Date: 2017-10-17
合锋卫浴(厦门)有限公司
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Problems solved by technology

It has the following disadvantages: the electroplating process is cumbersome, the production time of product electroplating is long, the production efficiency is low, the consumption of electroplating materials is large, the production cost is higher, the discharge of electroplating wastewater is high, it is not conducive to energy saving and emission reduction, and the corrosion resistance of the product surface is poor. Product lifespan is low

Method used

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  • Method for aluminum alloy electroplating powder cloud nickel composite coating

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Embodiment Construction

[0037] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

[0038] see figure 1 , an aluminum alloy electroplating powder mist nickel composite coating structure, comprising an aluminum alloy substrate 1 and a composite coating, the composite coating includes a replacement zinc coating 2, a bottom nickel coating 3 and a powder mist nickel coating 4; the surface of the aluminum alloy substrate 1 The composite coatings are made according to the following coating sequence: replacement zinc coating 2, bottom nickel coating 3, powder mist nickel coating 4, which are composited by electroplating.

[0039] A method for aluminum alloy electroplating powder mist nickel composite coating, comprising the following steps:

[0040] (1) Pre-treatment of electroplating; including the following steps:

[0041] 1) Hot water degreasing and degreasing: The composition of the hot water degreasing and degreasing tank liquid i...

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Abstract

The invention discloses a method for aluminum alloy electroplating powder mist nickel composite coating, comprising the following steps: (1) electroplating pretreatment; (2) zinc replacement; (3) electroplating bottom nickel; (4) electroplating powder mist nickel. The design of the aluminum alloy electroplating powder mist nickel composite coating is reasonable, which simplifies the electroplating process, shortens the production time of product electroplating, and improves production efficiency; reduces the consumption of electroplating materials, saves production costs, reduces the discharge of electroplating wastewater, and is more environmentally friendly; the electroplating process is more environmentally friendly. Optimization; the surface of the product has strong corrosion resistance and prolongs the service life of the product.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a method for electroplating powder mist nickel composite coatings on aluminum alloys. Background technique [0002] At present, the coating structure of aluminum alloy electroplating powder mist nickel products is: aluminum alloy substrate + replacement zinc coating + bottom nickel coating + pyrophosphate copper coating + copper sulfate coating + semi-gloss nickel coating + full-gloss nickel coating. It has the following disadvantages: the electroplating process is cumbersome, the product electroplating production time is long, the production efficiency is low, the consumption of electroplating materials is large, the production cost is higher, the discharge of electroplating wastewater is high, it is not conducive to energy saving and emission reduction, and the corrosion resistance of the product surface is poor. Product lifespan is low. Therefore, the present invention provi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/14C25D3/12C25D15/00
CPCC25D5/14C25D3/12C25D15/00
Inventor 李明龙
Owner 合锋卫浴(厦门)有限公司
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