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Composition for electroplating acid washing and electroplating method using the composition

A technology of composition and electroplating acid, which is applied in the field of electroplating of rare earth alloys, can solve the problems of poor adhesion of the coating and achieve excellent adhesion

Inactive Publication Date: 2010-11-03
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcoming of the poor coating adhesion of rare earth alloys in the prior art, provide a kind of electroplating pickling composition that can improve the coating adhesion of rare earth alloys and the electroplating method of the rare earth alloy using the composition

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This example illustrates the composition of the present invention and the rare earth alloy electroplating process using the composition.

[0032] [Plating process]

[0033] Polishing→wax removal→water washing→oil removal→water washing→soaking in pickling solution→water washing→soaking in alkaline solution→water washing→pre-plating→water washing→functional plating→water washing→decorative plating→water washing→passivation→water washing→drying →Get electroplating products

[0034] [Conditions for each step]

[0035] Polishing: use a polishing machine (Dongguan Tailai Machinery Factory, model CC-A108) to mechanically polish the surface of the rare earth alloy.

[0036] Wax removal: add 3 liters of wax removal solution (produced by Shangma Science and Technology Co., Ltd.) in an ultrasonic cleaning machine (manufacturer: Sanyuan Ultrasonic Equipment Co., Ltd.; Ultrasonic vibration at ℃ for 5 minutes.

[0037] Degreasing: add 3 liters of degreasing solution (manufactured...

Embodiment 2

[0049] Electroplating was carried out according to the method of Example 1, except that the pickling solution contained 8 grams of acetic acid, 15 grams of sodium acetate, 5 grams of hexamethylenetetramine, and 1000 grams of deionized water.

Embodiment 3

[0051] Electroplating was carried out according to the method of Example 1, except that the pickling solution contained 15 grams of acetic acid, 25 grams of sodium acetate, 6 grams of hexamethylenetetramine, and 1000 grams of deionized water.

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PUM

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Abstract

Disclosed is a combination used in galvanization acid pickling. The combination comprises organic acid with carbon atom number of 1 to 10, alkali metal salt of the organic acid, and an acid pickling anticorrosion agent, wherein, the acid pickling anticorrosion agent adopts hexamethylene tetramine and / or 4-methylpyridine. A rare earth alloy treated with the galvanization method has excellent adhesion force, in addition, the ware resistance of a plating layer of a rare earth alloy galvanized product manufactured through the method is obviously better than the galvanized product manufactured through the prior art. For example, the wear resistance of the rare earth alloy galvanized product manufactured through the method is above 2700 cycles, and the wear resistance of the galvanized product manufactured through the prior art is only 1500 cycles.

Description

technical field [0001] The invention relates to a composition for electroplating and pickling and an electroplating method using the composition, in particular to a composition for electroplating and pickling and an electroplating method for a rare earth alloy using the composition. Background technique [0002] As a typical metal element, rare earth elements are abundant in the earth's crust, and their metal activity is second only to alkali metals and alkaline earth metals. Through compositional design of rare earth elements, rare earth alloys with high strength, compact structure, good plasticity and die-castability can be obtained. Rare earth alloys are widely used in traditional industrial fields such as metallurgy, petroleum, glass, ceramics, agriculture, textiles and leather. However, the active chemical activity of rare earth alloys makes them easily corroded, which restricts the development and application of rare earth alloys. Therefore, surface treatment of rare ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/06C23G1/10C25D5/34C25D5/10C25D5/24
Inventor 李金儡杨进波陈梁
Owner BYD CO LTD