CN2107701U - Multi-layer metal electricity conducting wire material - Google Patents

Abstract

The utility model discloses multi-layer metal electricity conducting wire material which adopts aluminum or aluminum alloy as an inner core. Electricity conducting wire material made of oxygen-free copper or hypoxia copper is coated outside the multi-layer metal electricity conducting wire material. Graphite material is used for separating the copper and the aluminum. Graphite material can prevent the copper and the aluminum from producing copper-aluminum alloy caused by the contact for a long time. The long-term stability of the electricity conducting wire material can be ensured. The range of application is phi 0.05 mm-phi 55 mm and specially an electromagnetic wire with phi 0.05 mm-phi 1 mm is more suitable.

Description

Multi-layer metal electricity conducting wire material

The utility model relates to a kind of multiple layer metal electric wire, particularly multiple layer metal electromagnetic wire, winding displacement, special-shaped line and enamelled wire thereof.

Existing metallic conduction wire rod is to be processed by fine copper or fine aluminium substantially, and the fine copper wire weight is big, costs an arm and a leg.Oxidation, embrittlement etc. when using for a long time, the fine aluminium lead easily take place.Though once reported the copper-plated lead of aluminium, also, make the electric conductivity variation because the long meeting of its time forms albronze, lead becomes fragile and does not form commodity.

The purpose of this utility model provides a kind of light-duty multiple layer metal electric wire, can keep excellent conducting performance, has long-time stability again.

The utility model is realized with following means, that is: by up-drawing method or flat oxygen-free copper pipe that method produces or the hypoxemia copper pipe of drawing as skin, or anaerobic, hypoxemia copper strips are rolled into copper pipe as skin, with the graphite medium as separator, and with aluminum or aluminum alloy as heart yearn, form the multiple layer metal electric wire.

Can also be with the method that applies, the method for coating is silver-plated again at the copper skin, bag lacquer, plastic etc., to satisfy the needs of different occasions.

This multiple layer metal electric wire had both had the advantage of fine copper lead, is easy to connect, and good conductivity, non-oxidizability is strong, has aluminum conductor light weight, advantage that price is low again.Especially under the high-frequency work state, because kelvin effect exists, the increase slightly of heart yearn resistance and all-in resistance can not bring what influence, moreover the multiple layer metal of this multiple layer metal electric wire has the multilayer kelvin effect, and its electric conductivity is better than fine copper lead.

With the Shanghai innovation 120w of electrical machinery plant electromechanical testing is example:

	Standard	Pure copper wire	Recombination line
				Starting current times	≤6	3.58	3.35
Super dynamic torque multiple	≥2.2	2.74	2.40
				Efficient	≥60	60	60.79
Temperature rise	≤75℃	33.3℃	36.7℃

Referring to accompanying drawing, further specify the utility model.1. be the heart yearn that fine aluminium or aluminium alloy are made; 2. be the graphitized mesophase buffer layer; 3. be anaerobic or hypoxemia copper pipe; 4. be polyester insulating lacquer or plastics.

The utility model can be made of following technology; Method 1 applies the graphitized mesophase medium with the aluminum or aluminum alloy line, in this aluminum or aluminum alloy line feeding copper pipe; Method 2 has applied the copper pipe of graphite medium with drawing the suction inwall on the liquid aluminum or aluminum alloy, and utilizes gravity that the aluminum or aluminum alloy liquid in the pipe is full of therebetween.Method 3 applies the graphitized mesophase medium with the aluminum or aluminum alloy line and hypoxemia or oxygen-free copper stripe is coated again, through repeatedly drawing.The composite material that said method 1 or method 2, method 3 are produced is processed into the electric wire in various cross sections through rolling or drawing process again.This electric wire can again can coating or coated with silver, lacquer or plastic layer according to the purposes needs.The various material thicknesses of being produced of multiple layer metal electric wire are: the core radius that fine aluminium or aluminium alloy are made is the 30-90% of lead radius, and the thickness of graphite buffer layer accounts for the 1-10% of lead radius; The thickness of anaerobic, hypoxemia copper accounts for the 8-70% of lead radius.The diameter of wire scope is: φ 0.05mm-φ 55mm.

Claims (4)

1, a kind of multiple layer metal electric wire is characterized in that comprising following multilayer material, and by the heart yearn that fine aluminium or aluminium alloy are made, its radius is the 30-90% of described wire rod radius;

Be formed on the outer graphite dielectric layer of above-mentioned heart yearn, its thickness is the 1-10% of described wire rod radius;

Be formed on above-mentioned dielectric layer outer anaerobic or hypoxemia copper layer, its thickness is the 8-70% of described wire rod radius;

Described diameter of wire is less than or equal to 55mm more than or equal to 0.05mm.

2,, it is characterized in that this wire rod is electromagnetic wire, flat cable or shaped wire according to the described multiple layer metal electric wire of claim 1.

3, according to claim 1 or 2 described multiple layer metal electric wires, it is characterized in that further being coated with silver-coated layer at its skin.

4,, it is characterized in that its outer further coating or coating lacquer or plastic insulating layer according to claim 1 or 2 described multiple layer metal electric wires.

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