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Reciprocating production process of electroplated copper-clad aluminum

A production process, a round-trip technology, applied in the field of metallurgy, can solve the problems of waste of resources, difficult to control, low copper content, etc., and achieve the effect of small improvement, significant optimization effect, and improved bonding strength.

Active Publication Date: 2020-10-16
ZHEJIANG PUJIANG BAICHUAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the difficulty in controlling the copper content in the current copper-clad aluminum alloy wire within an appropriate range, the copper content is too high when the copper layer is prepared by the cladding welding method. Waste of resources has been produced, and when direct plating electroplating or technical solutions such as CN102324276B are used to prepare copper layers, there are problems such as low copper content and poor performance. The invention provides a production of reciprocating electroplating copper-clad aluminum craft

Method used

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  • Reciprocating production process of electroplated copper-clad aluminum
  • Reciprocating production process of electroplated copper-clad aluminum
  • Reciprocating production process of electroplated copper-clad aluminum

Examples

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Effect test

Embodiment 1

[0079] A production process for reciprocating electroplating copper-clad aluminum, comprising:

[0080] 1) Multi-stage alkali cleaning: the temperature is controlled at 60°C, and the aluminum base material is subjected to three times of alkali cleaning, and the alkali cleaning is carried out by countercurrent rinsing;

[0081] After the multi-stage alkali washing, the aluminum base material is washed with water, and the washing process is followed by a deionized water rinse and a deionized water countercurrent rinse; the lye contains 30g / L sodium hydroxide and 15g / L sodium phosphate, and the solvent is water;

[0082] 2) Zinc-precipitating treatment: Carry out zinc-precipitating twice on the cleaned aluminum material, during the zinc-precipitating process, the zinc-precipitating liquid is used as the aluminum alloy cyanide-free zinc-precipitating agent;

[0083] The zinc-precipitating process includes: sending the cleaned aluminum material into the zinc-precipitating tank, and...

Embodiment 2

[0097] A production process for reciprocating electroplating copper-clad aluminum, comprising:

[0098] 1) Multi-stage alkali cleaning: the temperature is controlled at 80°C, and the aluminum base material is subjected to three times of alkali cleaning, and the alkali cleaning is carried out by countercurrent rinsing;

[0099] After the multi-stage alkali washing, the aluminum base material is washed with water. The washing process is followed by a deionized water rinse and a deionized water countercurrent rinse; the alkali solution contains 25g / L of sodium hydroxide and 12.5g / L of sodium phosphate, and the solvent is water;

[0100] 2) Zinc-precipitating treatment: Carry out zinc-precipitating twice on the cleaned aluminum material, during the zinc-precipitating process, the zinc-precipitating liquid is used as the aluminum alloy cyanide-free zinc-precipitating agent;

[0101] The zinc precipitation is as follows: the cleaned aluminum material is sent to the zinc precipitatio...

Embodiment 3

[0115] A production process for reciprocating electroplating copper-clad aluminum, comprising:

[0116] 1) Multi-stage alkali cleaning: the temperature is controlled at 80°C, and the aluminum base material is subjected to three times of alkali cleaning, and the alkali cleaning is carried out by countercurrent rinsing;

[0117] After the multi-stage alkali washing, the aluminum base material is washed with water. The washing process is followed by a deionized water rinse and a deionized water countercurrent rinse; the alkali solution contains 25g / L of sodium hydroxide and 12.5g / L of sodium phosphate, and the solvent is water;

[0118] 2) Zinc-precipitating treatment: Carry out zinc-precipitating twice on the cleaned aluminum material, during the zinc-precipitating process, the zinc-precipitating liquid is used as the aluminum alloy cyanide-free zinc-precipitating agent;

[0119] Said zinc precipitation is: put the cleaned aluminum into the zinc precipitation tank, control the t...

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Abstract

The invention belongs to the field of metallurgy, and particularly relates to a reciprocating production process of electroplated copper-clad aluminum. The reciprocating production process comprises the following steps that multi-section alkali washing is carried out, specifically, alkali washing is carried out on an aluminum base material at least two times to obtain a cleaned aluminum material;zinc precipitation treatment is carried out, specifically, zinc precipitation is carried out on the cleaned aluminum material at least two times; layered copper plating is carried out, specifically, copper plating is carried out on the aluminum material subjected to zinc precipitation treatment a plurality of times, wherein the copper plating at least comprises three procedures of pre-plating, primary thick plating and main thick plating; and post-treatment is carried out, wherein the post-treatment comprises primary passivation, continuous drawing, flaw detection, annealing and post-passivation take-up. The reciprocating production process of electroplated copper-clad aluminum increases copper content in copper-clad aluminum wires, improves the signal transmission performance of the wholewires, improves the bonding strength between copper layers and base material aluminum cores, improves the oxidation resistance of the wires, and prolongs the service life.

Description

technical field [0001] The invention belongs to the field of metallurgy, in particular to a reciprocating production process for electroplating copper-clad aluminum. Background technique [0002] Copper-clad aluminum wire is made of aluminum rod as the core wire, concentrically covered with copper layer, and produced through drawing, annealing and other processes. Because the high-frequency signal current is mainly concentrated on the surface of the conductor when it passes through the conductor, resulting in a "skin effect", but the current transmitted in the core of the conductor is very small. For example, the cable TV signal is transmitted on the surface of the copper layer above 0.008mm, and the copper clad The aluminum inner conductor can fully meet the signal transmission requirements, and its signal transmission characteristics are consistent with copper wires of the same diameter. According to the principle of "skin effect", the copper-clad aluminum conductor is us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D7/06C25D5/10C25D5/44C25D3/38
CPCC25D7/0607C25D5/10C25D5/44C25D3/38Y02P10/20
Inventor 张荣良潘秋丽江又平楼新天朱晓军宋玲利江南
Owner ZHEJIANG PUJIANG BAICHUAN IND
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