Method and solution for electrogalvanizing surface of zinc alloy workpiece comprising blind hole

A workpiece surface and zinc alloy technology, which is applied in the field of zinc alloy workpiece surface electroplating solution containing blind holes, can solve the problems of poor corrosion resistance and achieve the effect of good bonding force and complete coating

A workpiece surface and zinc alloy technology, which is applied in the field of zinc alloy workpiece surface electroplating solution containing blind holes, can solve the problems of poor corrosion resistance and achieve the effect of good bonding force and complete coating

CN101634041AInactive Publication Date: 2010-01-27NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
1 Cites 9 Cited by

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0017] A zinc alloy with a mass fraction of 60% is used as the matrix. The acidic chloride electroplating zinc solution is: zinc chloride 70g / L, potassium chloride 200g / L, boric acid 30g / L, acridine 2g / L, dioctyl sodium sulfosuccinate 0.05g / L, brightener is Hangzhou Aoye Technology Industrial Co., Ltd. provides ZINC ACK series, including brightener ACK-130ml / L, ACK-22ml / L, solution temperature 30℃, cathode current density 3A / dm 2 , pH value = 5.3, electroplating time 50min. The resulting coating has good compactness, good deep plating property, good gloss and good corrosion resistance. With other ingredients being the same,

Embodiment 2

[0019] A zinc alloy with a mass fraction of 70% is used as the substrate. The acidic chloride electroplating zinc solution is: zinc chloride 70g / L, potassium chloride 200g / L, boric acid 30g / L, acridine 1.5g / L, diisosuccinic acid Sodium octyl sulfonate 0.1g / L, brightener ZINC ACK series provided by Hangzhou Aoye Technology Industrial Co., Ltd., among which brightener ACK-130ml / L, ACK-22ml / L, solution temperature 30 ℃, cathode current density 3A / dm 2 , pH value = 5.3, electroplating time 45min. The resulting coating has good compactness, good deep plating property, good gloss and good corrosion resistance.

Embodiment 3

[0021] The zinc alloy with a mass fraction of 80% is used as the matrix acidic chloride electroplating zinc solution is: zinc chloride 70g / L, potassium chloride 2000g / L, boric acid 30g / L, acridine 1g / L, diisooctyl succinate Sodium sulfonate 0.15g / L, brightener ZINCACK series provided by Hangzhou Aoye Technology Industrial Co., Ltd., among which brightener ACK-130ml / L, ACK-22ml / L, solution temperature 30 ℃, cathode current density 3A / dm 2 , pH value = 5.3, electroplating time 40min. The resulting coating has good compactness, good deep plating property, good gloss and good corrosion resistance.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method and solution for electrogalvanizing the surface of a zinc alloy workpiece comprising a blind hole. The method orderly comprises the steps of cleaning, activating, electrogalvanizing, reactivating and passivating the surface of the zinc alloy workpiece. The electrogalvanizing solution is characterized in that: the solution contains the following components per liter: 0.5 to 2 g of acridine, 0.05 to 0.2 g of dioctyl sodium sulfosuccinate, and the balance of common acidic galvanizing components. The electrogalvanizing solution adjusts the pH value to between 5.0 and 6.0 when the electrogalvanizing is performed, the temperature of the solution is kept between 20 and 30 DEG C, and the cathode current density is between 1 and 3 A / dm<3>. The method and the solution have the advantages that: the electrogalvanizing solution has little corrosion to the matrix of a zinc alloy after a corrosion inhibitor is added; and the throwing power of the blind hole is high after a wetting agent is added into the electrogalvanizing solution; a finally obtained electrogalvanized layer has good binding force, good the throwing power, and good compactness and corrosion resistance; and the efficiency is improved.

Description

technical field [0001] The invention relates to a solution and a method for electrogalvanizing the surface of a zinc alloy workpiece containing blind holes, and belongs to the field of material surface treatment. Background technique [0002] Due to its cheap price, low melting point, and especially good die-casting process performance, zinc alloy has been widely used in the manufacture of small hardware accessories. Some zinc alloy workpieces contain small-sized blind holes, which take a long time to process, and some wetting agents need to be added during the process. Moreover, the appearance of zinc alloy die castings is gray and white, and there are various defects on the surface, such as: ash, shrinkage cavities, etc. Therefore, without surface treatment, its usability and decoration are very poor. A common surface treatment method is electroplating. However, zinc alloys are relatively lively and have poor corrosion resistance, especially in acidic solutions. For exam...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
27 Jan 2010
Publication
CN101634041A
IPC
C25D3/22
Inventors
宋振纶; 沈素峰