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Cyanide-free copper-zinc-tin and zinc electroplating technology

A kind of zinc electroplating and process technology, applied in the field of cyanide-free copper-zinc-tin alloy zinc electroplating process

Inactive Publication Date: 2019-06-04
李达
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, a single electroplating can no longer meet the requirements of customers. The current plastic products need to be electroplated with multiple zinc species at the same time to meet the needs of the product; however, due to the respective characteristics of various zinc species, it is often difficult to electroplate several zinc species on the workpiece at the same time. accomplish

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] A kind of cyanide-free copper-zinc-tin alloy zinc electroplating process, the concrete steps of this process are as follows:

[0062] (1) discharge the workpiece;

[0063] (2) Remove oil and dirt on the surface of the workpiece;

[0064] (3) Neutralize the alkaline substances on the surface of the workpiece and perform surface activation;

[0065] (4) electroplating copper;

[0066] (5) electro-galvanized;

[0067] (6) electroplating tin;

[0068] (7) neutralize and wash with water;

[0069] (8) air-drying, drying;

[0070] (9) Receive materials.

[0071]Step (2) described in the present embodiment removes oil stain and dirt on workpiece surface, carries out according to following procedures:

[0072] (A1) Put workpiece into solution A and carry out ultrasonic degreasing, the mass percentage of each component in solution A is: 5 parts of electroplating surfactant, 35 parts of sodium hydroxide, 55 parts of tap water; Ultrasonic degreasing time 600S;

[0073] (A2)...

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PUM

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Abstract

The invention discloses a cyanide-free copper-zinc-tin and zinc electroplating technology. The cyanide-free copper-zinc-tin and zinc electroplating technology comprises the following specific steps that 1, a workpiece is discharged; 2, surface oil contamination and dirt of the workpiece are removed; 3, workpiece surface alkaline matter is neutralized and surface activation is carried out; 4, electrocoppering is carried out; 5, electrogalvanizing is carried out; 6, electrotinning is carried out; 7, neutralization and washing are carried out; 8, air drying and drying are carried out; and 9, materials are put away. According to the cyanide-free copper-zinc-tin and zinc electroplating technology, reasonable working procedure is adopted, continuous electroplating of copper, zinc and tin is realized, zinc genus copper, zinc and tin are simultaneously on the workpiece, and requirements of clients are met.

Description

technical field [0001] The invention relates to an electroplating process, in particular to a cyanide-free copper-zinc-tin alloy zinc electroplating process. Background technique [0002] Plastic electroplating products have the advantages of light weight, good corrosion resistance, easy molding and zinc organic solvent resistance, light resistance, zinc luster, thermal conductivity, electrical conductivity, electromagnetic shielding, and easy welding. They are widely used in automobiles and motorcycles. Widely used in industries such as automobiles, hardware, electronics, and communications. [0003] At present, a single electroplating can no longer meet the requirements of customers. The current plastic products need to be electroplated with multiple zinc species at the same time to meet the needs of the product; however, due to the respective characteristics of various zinc species, it is often difficult to electroplate several zinc species on the workpiece at the same ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/10
Inventor 李娜
Owner 李达
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