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Production method of silver-plated conductor for producing highly sophisticated products for aviation and aerospace

A technology of cutting-edge products and production methods, which is applied in the production field of silver-plated conductors to achieve the effect of bright and lasting color, good compactness and good aging resistance.

Inactive Publication Date: 2011-11-16
铜陵金力铜材有限公司
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AI Technical Summary

Problems solved by technology

In recent years, some cyanide-free silver plating processes have been used in industrial production, and there are more cyanide-free silver plating processes in research and development, but there is still a certain gap between the stability of these cyanide plating solutions and the performance of the coating compared with cyanide silver plating.

Method used

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Embodiment Construction

[0015] A kind of production method of the used silver-plated conductor of aviation, aerospace high-end products of the present invention is characterized in that it comprises following production steps:

[0016] (1) To prepare nickel salt, make a solution of 250-300g / L with reagent-grade NiSO4·7H2O and heat it to 50-60°C, then slowly add the calculated solution A while stirring until the solution just becomes clear , and then continue to stir for 0.5h, then let it stand for 24h, and finally use vacuum filtration to remove sulfate radicals (tested with BaCl2 solution), you can get SO-free 4 2- active nickel salt;

[0017] (2) Prepare plating solution, prepare pre-plating silver solution, KCN70-80g / L, KAg(CN) 2 , 5-7g / L, mixed to make pre-silvering solution; to prepare silver-plated nickel alloy, KAg(CN) 2 , 30-80g / L, KCN10-30g / L, K 2 CO 3 10-20g / L, CdSO 4 0.2-0.3g / L, saccharin 0.1-0.2g / L; complexing agent 100-150g / L; nickel salt 5-10g / L; potassium selenite 1-2g / L, PH13-14...

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Abstract

The invention discloses a production method of a silver-plated conductor for producing highly sophisticated products for aviation and aerospace. The production method is characterized by comprising the following production steps: firstly preparing a nickel salt, then preparing a plating solution, insulating a copper or copper alloy conductor, chemically degreasing, washing with water, chemically derusting and polishing, washing with water, carrying out weak etching, washing with water twice, placing into the plating solution for nickel pre-plating, recovering, washing with water, removing the film, washing with water twice, carrying out silver pre-plating and silver plating, recovering, washing with water twice, passivating, washing with water, and drying to obtain the silver-plated conductor. The coating of the silver-plated conductor has the advantages of uniform thickness, high purity, good density, high corrosion resistance and everlasting luster and whiteness; and the silver-plated conductor can be used for highly sophisticated products in aviation, aerospace and other fields.

Description

technical field [0001] The invention relates to a production method of a silver-plated conductor. Background technique [0002] The most widely used silver plating process is still the cyanide silver plating process. Because this process has wide applicability, it can be used from ordinary silver plating to high-speed electroforming silver plating, and the coating performance is relatively good. In recent years, some cyanide-free silver plating processes have been used in industrial production, and there are more cyanide-free silver plating processes in research and development, but there is still a certain gap between the stability of these cyanide plating solutions and the performance of the coating compared with cyanide silver plating. . The development of a new process that can replace cyanide silver plating is still an important topic in the field of electroplating technology. Contents of the invention [0003] The purpose of the present invention is to provide a l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/46
CPCC25D3/12C25D3/46C25D3/562C25D3/64C25D5/12C25D5/14C25D5/627
Inventor 罗双月
Owner 铜陵金力铜材有限公司
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