CN105869702A - Copper-clad aluminum composite wire - Google Patents

Abstract

The invention discloses a copper-clad aluminum composite wire, and by means of the composite wire, copper consumption can be reduced, and copper can be tightly combined with an aluminum wire. The copper-clad aluminum composite wire structurally comprises the aluminum wire, and the aluminum wire is sequentially electroplated with a middle metal layer and a copper layer from inside to outside; the thickness of the copper layer is t1, the proportion is Rho1, the thickness of the middle metal layer is t2, the proportion is Rho2, the radius of the aluminum wire is R, the proportion is Rho3, the copper-clad aluminum composite wire meets the formula (the formula can be seen in the specification). Due to the fact that the aluminum wire in the copper-clad aluminum composite wire serves as a conductor, meanwhile the weight of the aluminum wire can be well borne, therefore no extra bearing steel wire is needed to be laid when a cable is erected, and the copper-clad aluminum composite wire is quite convenient and fast to use.

Description

Cuprum-cladding-aluminium composite wire

Technical field

The present invention relates to a kind of metal compound wire for communications, refer more particularly to a kind of copper cover aluminum Composite wire.

Background technology

At present, traditional cuprum-cladding-aluminium composite wire, is that copper strips is directly coated on the aluminum steel as heart yearn or aluminium On magnesium alloy bar/wire rod, and use argon arc welding that copper strips seam is welded, then, through multi-pass draw dial and Become.It is known that copper differs bigger with the mechanical performance of aluminium, although have passed through many more than 80% draft Passage drawing, copper strips and heart yearn are also unable to reach the close degree of metallurgical binding；And, for repeatedly drawing Smoothly, copper strips needs enough thickness, it is generally the case that copper accounts for the mass percent of described composite wire Content, generally more than 25%, which adds the consumption of copper, thus adds production cost, reduce The competitiveness of product.

Summary of the invention

The technical problem to be solved is: provide a kind of consumption that can reduce copper and can make copper with The compact cuprum-cladding-aluminium composite wire of aluminium matter wire rod.

For solving above-mentioned technical problem, the cuprum-cladding-aluminium composite wire that the present invention uses, including: aluminium matter wire rod, This aluminium matter wire rod from-inner-to-outer electroplates intermediate metal layer and layers of copper successively；

If: the thickness of layers of copper is t₁, proportion is ρ₁, the thickness of intermediate metal layer is t₂, proportion is ρ₂, aluminium matter The radius of wire rod is R, and proportion is ρ₃, then:

$t_2=R\×\sqrt{1+\frac{K_1\×{\mathrm{\ρ}}_3}{(1-K_1)\×{\mathrm{\ρ}}_2}}-R,K_1\≤0.07;$

$t_1=\sqrt{{(R+t_2)}^2+K_2\frac{{\mathrm{\ρ}}_3}{{\mathrm{\ρ}}_1}{R}^2}-R-t_2,0.07\≤K_2\≤0.15;$

Wherein, the unit of proportion is gram/cubic centimeter, and the unit of thickness and radius is millimeter.

As a kind of preferred version, in described cuprum-cladding-aluminium composite wire, described aluminium matter wire rod is aluminum steel, The mass percentage content of aluminium is more than 99.5%.

As a kind of preferred version, in described cuprum-cladding-aluminium composite wire, described intermediate metal layer is nickel Layer or zinc layers.

As a kind of preferred version, in described cuprum-cladding-aluminium composite wire, the quality of copper in described layers of copper Degree is more than 99.9%.

The invention has the beneficial effects as follows: the present invention is by electroplating intermediate metal layer, again electricity outside aluminium matter wire rod Copper coating, forms cuprum-cladding-aluminium composite wire of the present invention, thus by intermediate metal layer by copper Closely it is wrapped on aluminium matter wire rod, reaches the close degree of metallurgical binding, but also greatly reduce The consumption of copper, reduces the manufacturing cost of product.

Accompanying drawing explanation

Fig. 1 is the structural representation of cuprum-cladding-aluminium composite wire of the present invention.

Reference in Fig. 1 is: 1, aluminum steel, 2, intermediate metal layer, 3, layers of copper；t₁For layers of copper 3 Thickness, t₂For the thickness of intermediate metal layer 2, R is the radius of aluminum steel 1.

Detailed description of the invention

Below in conjunction with the accompanying drawings, the specific embodiments of cuprum-cladding-aluminium composite wire of the present invention is described in detail:

As it is shown in figure 1, cuprum-cladding-aluminium composite wire of the present invention, including: as the quality of aluminium matter wire rod Degree aluminum steel 1 more than 99.5%, this aluminum steel 1 from-inner-to-outer is electroplate with nickel dam successively or zinc layers is made The layers of copper 3 more than 99.9% for intermediate metal layer 2 and mass percentage content；

If: the thickness of layers of copper 3 is t₁, proportion is ρ₁, the thickness of intermediate metal layer 2 is t₂, proportion is ρ₂, The radius of aluminum steel 1 is R, and proportion is ρ₃, then:

$t_2=R\×\sqrt{1+\frac{K_1\×{\mathrm{\ρ}}_3}{(1-K_1)\×{\mathrm{\ρ}}_2}}-R,K_1\≤0.07;$

$t_1=\sqrt{{(R+t_2)}^2+K_2\frac{{\mathrm{\ρ}}_3}{{\mathrm{\ρ}}_1}{R}^2}-R-t_2,0.07\≤K_2\≤0.15;$

Wherein, the unit of proportion is gram/cubic centimeter, and the unit of thickness and radius is millimeter.

Cuprum-cladding-aluminium composite wire of the present invention, its electric parameter is fully achieved standard-required, can be widely It is applied in the communications field.

In sum, only presently preferred embodiments of the present invention, not it is used for limiting the model that the present invention implements Enclose, all equivalent variations made according to the shape described in scope of the invention as claimed, structure, feature and spirit With modification, all should be included in scope of the presently claimed invention.

Claims (4)

1. cuprum-cladding-aluminium composite wire, including: aluminium matter wire rod, it is characterised in that: described aluminium matter wire rod is from interior Intermediate metal layer and layers of copper is electroplated successively outside and；

If: the thickness of layers of copper is t₁, proportion is ρ₁, the thickness of intermediate metal layer is t₂, proportion is ρ₂, aluminium matter The radius of wire rod is R, and proportion is ρ₃, then:

$t_2=R\×\sqrt{1+\frac{K_1\×{\mathrm{\ρ}}_3}{(1-K_1)\×{\mathrm{\ρ}}_2}}-R,K_1\≤0.07;$

$t_1=\sqrt{{(R+t_2)}^2+K_2\frac{{\mathrm{\ρ}}_3}{{\mathrm{\ρ}}_1}{R}^2}-R-t_2,0.07\≤K_2\≤0.15;$

Wherein, the unit of proportion is gram/cubic centimeter, and the unit of thickness and radius is millimeter.

Cuprum-cladding-aluminium composite wire the most according to claim 1, it is characterised in that: described aluminium matter wire rod For aluminum steel, the mass percentage content of aluminium is more than 99.5%.

Cuprum-cladding-aluminium composite wire the most according to claim 1, it is characterised in that: described intermetallic metal Layer is nickel dam or zinc layers.

4. according to the cuprum-cladding-aluminium composite wire described in claim 1,2 or 3, it is characterised in that: described In layers of copper, the mass percentage content of copper is more than 99.9%.