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Brush plating method of aluminium alloy conductor surface silver layer

An aluminum alloy conductor and brush plating technology is applied in the field of high-voltage power equipment manufacturing. low cost effect

Active Publication Date: 2009-06-10
CHINA XD ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary electroplating adopts the tank plating process, which requires a plating tank and an assembly line. The equipment required for the implementation of tank plating is complex in structure, large in size, large in floor space, and high in cost
[0003] For small-sized aluminum alloy conductors, it is more convenient to use the slot plating process; for large-volume or long-length aluminum alloy conductors, it is inconvenient to use the slot plating process; for aluminum alloy conductors that only require partial coating, it is inconvenient to use the slot plating process. And waste raw materials, especially expensive silver

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Using the brush plating method of the present invention to prepare the silver layer on the aluminum alloy conductor surface, the specific process steps are as follows:

[0027] (1) Wipe the surface of the aluminum alloy conductor with a scouring pad to remove the surface oxide layer and expose the metal layer, and then rinse it with water;

[0028] (2) Brush galvanized layer: At an ambient temperature of 15-20℃, first configure the galvanizing bath, the weight-volume ratio formula is: sodium hydroxide NaOH 300g / L, zinc oxide ZnO 60g / L, iron chloride FeCl 3 0.5g / L, potassium sodium tartrate KNaC 4 H 4 O 6 ·4H 2 O 15g / L, the rest is pure water; then, use a galvanizing pen to dip the galvanizing solution to brush the zinc, rinse with water after brushing, and then dip a cotton swab into a nitric acid solution with a weight-to-volume ratio of 550g / L. After dezincing, dip the galvanizing pen into the galvanizing solution to brush the zinc again, and rinse with water after brushi...

Embodiment 2

[0032] Using the brush plating method of the present invention to prepare the silver layer on the aluminum alloy conductor surface, the specific process steps are as follows:

[0033] (1) Wipe the surface of the aluminum alloy conductor with a scouring pad to remove the surface oxide layer and expose the metal layer, and then rinse it with water;

[0034] (2) Brush galvanized layer: At an ambient temperature of 25~28℃, first configure the zinc plating solution, the weight-volume ratio formula is: sodium hydroxide NaOH 400g / L, zinc oxide ZnO 80g / L, iron chloride FeCl 3 1.0g / L, potassium sodium tartrate KNaC 4 H 4 O 6 ·4H 2 O 20g / L, the rest is pure water; then, dip the galvanizing solution with a galvanizing pen to brush the zinc, rinse with water after brushing, and then dip a cotton swab with a nitric acid solution with a weight-to-volume ratio of 550g / L. After dezincing, dip the galvanizing pen into the galvanizing solution to brush the zinc again, and rinse with water after bru...

Embodiment 3

[0038] Using the brush plating method of the present invention to prepare a silver layer on the surface of an aluminum alloy conductor, the specific process steps are as follows:

[0039] (1) Wipe the surface of the aluminum alloy conductor with a scouring pad to remove the surface oxide layer and expose the metal layer, and then rinse it with water;

[0040] (2) Brush galvanized layer: at an ambient temperature of 28℃, first configure the zinc plating solution, the weight-volume ratio formula is: sodium hydroxide NaOH 500g / L, zinc oxide ZnO 100g / L, iron chloride FeCl 3 1.5g / L, potassium sodium tartrate KNaC 4 H 4 O 6 ·4H 2 O 25g / L, the rest is pure water; then, dip the galvanizing solution with a galvanizing pen to brush the zinc once, rinse with water after brushing, and then dip a cotton swab into a nitric acid solution with a weight-to-volume ratio of 550g / L After dezincing, dip the galvanizing pen into the galvanizing solution to brush the zinc again, and rinse with water aft...

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PUM

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Abstract

The invention relates to the field of manufacturing the high voltage power equipment, and particularly discloses a brush plating method for a silver layer on the surface of an aluminum alloy conductor. The method comprises the following steps: 1, the surface of the aluminum alloy conductor is wiped and washed; 2, at a temperature of between 15 and 28 DEG C, first-time zinc brushing, zinc deplating and second-time zinc brushing are performed; 3, at a temperature of between 25 and 38 DEG C, a brushing copper plating pen is dipped with plating copper liquid for copper brushing, wherein the current density of a contact surface between the brushing copper plating pen and the aluminum alloy conductor is between 3 and 6A; and 4, at a temperature of between 15 and 38 DEG C, a brushing silver plating pen is dipped with pre-plating silver liquid for silver pre-brushing, after washing, the brushing silver plating pen is dipped with plating silver liquid for silver brushing, wherein the current density of a contact surface between the brushing silver plating pen and the aluminum alloy conductor is between 2 and 6A, and finally the aluminum alloy conductor is washed.

Description

Technical field [0001] The invention relates to the field of high-voltage power equipment manufacturing, in particular to a brush plating method for a silver layer on the surface of an aluminum alloy conductor. Background technique [0002] In the manufacture of high-voltage power equipment, a large number of aluminum alloy conductors are used. Aluminum alloy conductors generally need to be plated with silver locally, which are mainly used to reduce surface contact resistance and improve the conductivity of electrical components and electrical connectors. Ordinary electroplating uses a bath plating process, which requires a plating bath and an assembly line. The equipment required for the implementation of bath plating has a complex structure, large volume, large area, and high cost. [0003] For aluminum alloy conductors with a small volume, slot plating is more convenient; for aluminum alloy conductors with large volumes or long lengths, it is inconvenient to use slot plating; ...

Claims

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Application Information

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IPC IPC(8): C25D5/04C25D5/30C25D3/46C25D5/44
Inventor 马利民
Owner CHINA XD ELECTRIC CO LTD
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