Copper plating process of aluminum wire material

A technology of wire rod and copper plating, applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc., can solve the problems of complex process, high cost, expensive price, etc., and achieve simple production process, low production cost and low price cheap effect

Inactive Publication Date: 2009-04-29
JIANGSU JIACHENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As we all know, copper wire has good electrical conductivity, but the price is more expensive; while aluminum wire is cheaper, but its electrical conductivity is not as good as copper wire; copper-clad aluminum wire is between the two, and its price and electrical conductivity are relatively moderate.
Traditional copper-clad aluminum wires are wrapped

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0014] Embodiment one:

[0015] The copper plating process of aluminum wire rod of the present invention, its steps are:

[0016] 1) Degreasing: put the aluminum wire rod with a diameter of 1.5 mm into the degreasing pool containing 600 liters of phosphate, 12 kg of carbonate and an appropriate amount of degreasing and film removing additives plus water at a temperature of 30 ° C. , remove the oil on the surface of the aluminum wire, then take the aluminum wire out of the degreasing tank, and rinse it with water at a temperature above 20°C;

[0017] 2) Pickling: Put the degreased aluminum wire into a pickling tank containing 250 liters of solution prepared by adding 50 liters of nitric acid, 12.5 liters of hydrofluoric acid and an appropriate amount of buffer with water. flushing;

[0018] 3) One-time galvanizing: Put the pickled aluminum wire into a pool containing 800 liters of solution prepared by adding 80kg of sodium hydroxide, 16kg of zinc oxide and an appropriate amou...

Example Embodiment

[0024] Embodiment two:

[0025] The copper plating process of aluminum wire rod of the present invention, its steps are:

[0026] 1) Degreasing: Put the aluminum wire with a diameter of 3 mm into the degreasing pool containing 600 liters of solution prepared by adding 30 kg of phosphate, 48 kg of carbonate, and an appropriate amount of degreasing and film removal additive with water, and the temperature is 80 ° C. , remove the oil on the surface of the aluminum wire, then take the aluminum wire out of the degreasing tank, and rinse it with water at a temperature above 40 °C;

[0027] 2) Pickling: Put the degreased aluminum wire into a pickling tank containing 250 liters of solution prepared by adding 125 liters of nitric acid, 37.5 liters of hydrofluoric acid and an appropriate amount of buffer with water. flushing;

[0028] 3) One-time galvanizing: Put the pickled aluminum wire into a pool containing 800 liters of solution prepared by adding 400kg of sodium hydroxide, 96kg ...

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Abstract

The invention discloses a copper plating process for aluminum wires, which is low in cost and capable of producing copper-coated aluminum wires in various specifications. The process comprises the following steps of subjecting the aluminum wires to alkali washing, washing, acid washing, washing, primary zinc dipping, washing, zinc removal, washing, secondary zinc dipping, washing, nickel plating, washing, copper plating, hot-water washing and drying in turn. The copper plating process has the advantages that the process can produce the copper-coated aluminum wires in various specifications, is simple in production process, adopts no cyanide, is simple in treatment for wastewater and waste steam, and is low in production cost, thereby ensuring the lower price of the copper-coated aluminum wires.

Description

technical field [0001] The invention relates to a copper plating process for aluminum wires in the electroplating industry. Background technique [0002] As we all know, copper wire has good electrical conductivity, but its price is more expensive; while aluminum wire is cheaper, but its electrical conductivity is not as good as copper wire; copper-clad aluminum wire is in between, and its price and electrical conductivity are relatively moderate. Traditional copper-clad aluminum wires are wrapped by a cladding machine. This process is more complicated and costly, and the cladding machine can only coat aluminum wires with a thicker diameter (8-12mm), but not Aluminum wire with a thinner diameter (1-2mm), and the tensile strength of the finished wire drawn by the copper plating process is significantly higher than that obtained by the cladding process. Contents of the invention [0003] A technical problem to be solved by the present invention is to provide a low-cost copp...

Claims

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Application Information

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IPC IPC(8): C23F17/00C23G1/24C23G1/04C23G1/12C23C10/20C25D3/12C25D3/38
Inventor 钱国平
Owner JIANGSU JIACHENG TECH
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