Preparation process of a copper-zinc-aluminum three-layer composite conductive wire row

A preparation process, copper-zinc-aluminum technology, applied in cable/conductor manufacturing, circuits, electrical components, etc., can solve the problems of reduced bonding strength, fast cooling speed, and easy interface embrittlement, etc. The effect of high dimensional accuracy and grain structure refinement

Active Publication Date: 2017-04-05
SUZHOU CHUANGHAO NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages of core-filled continuous casting copper-clad aluminum billets are consistent cooling and relatively uniform interface layer thickness, but this method requires a complex crimping mechanism to achieve continuous production, and the equipment is complex and inconvenient to operate and maintain. It is difficult to realize automatic production
[0010] Especially when copper and aluminum are combined by this method, the aluminum is in the liquid phase. Since the temperature of the aluminum liquid is relatively high, exceeding the eutectic temperature (549°C) of the copper-aluminum binary alloy, it is easy to form an intermetallic compound θ phase (with CuAl2 as the matrix solid solution), this phase has high strength, high hardness, and poor plasticity, which makes the interface prone to embrittlement. At the same time, due to the fast cooling rate, brittle phases of various intermetallic compounds are prone to appear at the interface of the copper-clad aluminum flat row, resulting in Copper and aluminum are delaminated during rolling, and the bonding strength is reduced

Method used

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  • Preparation process of a copper-zinc-aluminum three-layer composite conductive wire row
  • Preparation process of a copper-zinc-aluminum three-layer composite conductive wire row

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A copper-zinc-aluminum three-layer composite conductive wire row with a size of 30mm×8mm was prepared.

[0036] Concrete steps of the present invention are as follows:

[0037] Step 1: Clean the annealed copper tube to remove oil and oxides on the surface of the inner and outer tubes until the bright metal substrate is exposed. The diameter of the copper tube is 50mm, the wall thickness is 8mm, and the length of a single tube blank is 4m;

[0038] Step 2: Then put the copper pipe into a tank filled with liquid zinc, and perform hot-dip galvanizing on the inner and outer surfaces. The galvanizing temperature is 480 ° C, and the thickness of the galvanized layer is 40 μm;

[0039] Step 3: After galvanizing, insert the aluminum tube treated on the surface of the inner and outer tubes into the copper tube after hot-dip galvanizing. The diameter of the aluminum tube is 32mm, the wall thickness is 3mm, the length of the tube blank is 4m, and the galvanized The gap between th...

Embodiment 2

[0043] Prepare a copper-zinc-aluminum three-layer composite conductive wire row with a size of 50mm×10mm.

[0044] Concrete steps of the present invention are as follows:

[0045] Step 1: Clean the annealed copper tube to remove oil and oxides on the surface of the inner and outer tubes until the bright metal substrate is exposed. The diameter of the copper tube is 60mm, the wall thickness is 10mm, and the length of the tube blank is 5m;

[0046] Step 2: Then put the copper pipe into a tank filled with liquid zinc, and perform hot-dip galvanizing on the inner and outer surfaces. The galvanizing temperature is 500 ° C, and the thickness of the galvanized layer is 60 μm;

[0047] Step 3: After galvanizing, insert the aluminum tube treated on the surface of the inner and outer tubes into the copper tube after hot-dip galvanizing. The diameter of the aluminum tube is 38mm, the wall thickness is 4mm, the length of the tube blank is 5m, and the galvanized The gap between the copper...

Embodiment 3

[0051] A copper-zinc-aluminum three-layer composite conductive wire row with a size of 80mm×10mm is prepared.

[0052] Concrete steps of the present invention are as follows:

[0053] Step 1: Clean the annealed copper tube to remove oil and oxides on the surface of the inner and outer tubes until the bright metal substrate is exposed. The diameter of the copper tube is 90mm, the wall thickness is 15mm, and the length of a single tube blank is 6m;

[0054] Step 2: Then put the copper pipe into a tank filled with liquid zinc, and perform hot-dip galvanizing on the inner and outer surfaces. The galvanizing temperature is 500 ° C, and the thickness of the galvanized layer is 100 μm;

[0055] Step 3: After galvanizing, insert the aluminum tube treated on the surface of the inner and outer tubes into the copper tube after hot-dip galvanizing. The diameter of the aluminum tube is 57mm, the wall thickness is 4mm, the length of the tube blank is 6m, and the The gap between the copper ...

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Abstract

The invention discloses a preparation technology of a copper-zinc-aluminum three-layer composite conductive wire bank. The technology comprises the following steps of: (1) cleaning a copper tube; (2) galvanizing the copper tube; (3) carrying out rolling by a three-roll planetary rolling mill after an aluminum tube is inserted to obtain a copper-zinc-aluminum three-layer composite tube blank; (4) inserting an aluminum bar and drawing the copper-zinc-aluminum three-layer composite tube blank and the aluminum bar by a tube drawing machine until the copper-zinc-aluminum three-layer composite tube blank and the aluminum bar are laminated to obtain a composite rough blank; and (5) carrying out online heating on the composite rough blank through an induction coil, and directly rolling the rectangular copper-zinc-aluminum three-layer composite conductive wire bank through a two-direction rolling mill. According to the prepared composite conductive wire bank, the surface quality is good; no brittle phase is generated among three metals; the strength of the joint surface is high; the stratification phenomenon is avoided after rolling; and the used production equipment is simple, high in flexibility and low in cost.

Description

technical field [0001] The invention relates to the field of composite material preparation, in particular to a preparation process of a copper-zinc-aluminum three-layer composite conductive wire row. Background technique [0002] Conductive copper bar is a high-current conductive product, suitable for high-voltage and low-voltage electrical appliances, switch contacts, power distribution equipment, busway and other electrical engineering, and also widely used in metal smelting, electrochemical plating, chemical caustic soda and other super-high-current electrolytic smelting projects. The conductive copper bar has the advantages of low resistivity and large bendability. The cross-section is a rectangular or chamfered (rounded) rectangular long conductor, which plays the role of transmitting current and connecting electrical equipment in the circuit. [0003] In power transmission, the conductive copper bar is the conductor that connects the current-carrying branch circuits i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00H01B5/02
CPCH01B5/02H01B13/00
Inventor 梁贺穆开洪
Owner SUZHOU CHUANGHAO NEW MATERIAL TECH CO LTD
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