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Copper-clad aluminum-magnesium bimetallic wire production process

A technology of copper-clad aluminum-magnesium and production process, which is applied in the direction of cable/conductor manufacturing, electrical components, circuits, etc., can solve the problems of difficult control of copper interface structure, environmental hazards, and recycling, so as to improve the production operation environment and improve the quality of finished products. rate, solve the effect of broken wire

Inactive Publication Date: 2017-02-22
HANGZHOU ZHENDA HARDWARE MACHINERY
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Problems solved by technology

Generally speaking, the current conventional electroplating process mainly has the following technical problems: 2. The interface structure of copper and aluminum is difficult to control; 1. Environmental hazards caused by cyanide pre-copper plating and other processes; 3. Hydrogen embrittlement of products; 4. Treatment The removal of impurity metal ions in the medium and the recycling of the plating solution after treatment

Method used

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  • Copper-clad aluminum-magnesium bimetallic wire production process

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Embodiment Construction

[0019] The copper-clad aluminum-magnesium bimetallic wire production process comprises the following steps:

[0020] A. Surface pretreatment: The aluminum-magnesium alloy material is degreased and descaled to remove the oxide film on the surface of the aluminum-magnesium alloy material. First use degreasing agent to degrease the surface of aluminum-magnesium alloy material, and then use acid etching descaling treatment solution to remove the oxide film on the surface of aluminum-magnesium alloy material. The acid etching and descaling treatment solution includes the following components: HNO with a concentration of 68% 3 Solution: 500-600ml / L; H 3 PO 4 : 300-350ml / L; inorganic ammonium salt: 10-15g / L; organic amine-containing compound 15-25g / L; surfactant: 5-10g / L; the balance is water.

[0021] B. Zinc pretreatment: The aluminum-magnesium alloy material with the surface oxide film removed is subjected to zinc-precipitation treatment, so that a dense and uniform zinc-based ...

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Abstract

The invention relates to the technical field of metal conductor processing, in particular to a production process of a copper coated aluminum-magnesium bimetallic conductor, solving the technical problems of unreasonable prior art and the like. The production process comprises the following steps of: A, surface preprocessing; B, zinc deposit preprocessing; C, cyanogens-free nickel preplating; D, silicate copper plating; and E, postprocessing. The production process of the copper coated aluminum-magnesium bimetallic conductor has the advantages that: 1, the surface activity of an aluminum-magnesium alloy is better regulated, operation quality in a subsequence electroplating process and stability in a drawing process are ensured; 2, the problem of broken wires of electroplating intermediate products in a subsequent drawing process is solved, yield of final products is increased; and 3, electroplating is carried out by adopting a pulse modulation power supply, a microstructure of electrocrystallization copper is improved, compactness of a copper coating is improved, and hydrogen evolution side reaction is inhibited.

Description

technical field [0001] The invention relates to the technical field of metal wire processing, in particular to a production process of a copper-clad aluminum-magnesium bimetallic wire. Background technique [0002] The development of the wire and cable industry is inseparable from conductive materials such as copper and aluminum. Copper has good electrical properties and is a traditional conductive material. The amount of copper used in wires and cables accounts for 60-70% of the national copper consumption. However, the lack of copper resources and the continuous increase in market prices have prompted the cable industry to actively seek alternative materials. Copper-clad aluminum-magnesium bimetallic wire is a bimetallic wire with a certain thickness of pure copper concentrically coated on an aluminum-magnesium alloy core wire. Under the premise of ensuring the performance, it not only has the excellent electrical conductivity of copper, but also has the characteristics o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00
Inventor 张正良
Owner HANGZHOU ZHENDA HARDWARE MACHINERY
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