Carbon nano tube reinforced aluminum alloy core aluminum stranded wire and preparation method thereof

A technology of carbon nanotubes and aluminum cored wire, which is applied in the direction of metal/alloy conductors, cable/conductor manufacturing, power cables, etc., can solve the restrictions on the popularization and application of carbon fiber composite aluminum cored wires, the application constraints of heat-resistant aluminum alloy wires, Transportation, construction and maintenance are inconvenient to achieve the effect of reducing construction and operation and maintenance costs, reducing the amount of steel used, and facilitating transportation

Active Publication Date: 2014-03-12
STATE GRID CORP OF CHINA +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The aluminum stranded wire with carbon fiber composite core is based on the characteristics of light weight, high strength and heat resistance of the carbon fiber composite core. , the carbon fiber composite core is a non-magnetic material that does not produce hysteresis loss and thermal effects, thus reducing power loss; however, because the manufacturing technology of the carbon fiber composite core has been monopolized by foreign countries for a long time, the price is expensive, and its toughness is poor. It is extremely inconvenient in the maintenance process, thus limiting the popularization and application of carbon fiber composite cored aluminum stranded wire
[0006] The heat-resistant aluminum alloy wire mainly has excellent heat resistance characteristics due to the addition of metal elements such as zirconium, which can greatly increase the working temperature of the wire, thereby achieving the purpose of increasing the capacity of the line; however, due to the presence of metal elements such as zirconium, its electrical conductivity The rate is low, and as the operating temperature of the wire increases, the resistance increases and the line loss increases accordingly. At the same time, it is easy to cause oxidation or even damage to the connecting fittings. It is necessary to design and process corresponding new heat-resistant fittings to connect with it. In addition, heat-resistant The sag of the aluminum alloy wire is large when it runs at high temperature, and the height of the tower needs to be increased to match it, which restricts the application of the heat-resistant aluminum alloy wire

Method used

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  • Carbon nano tube reinforced aluminum alloy core aluminum stranded wire and preparation method thereof
  • Carbon nano tube reinforced aluminum alloy core aluminum stranded wire and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1) Weigh the ingredients needed to prepare carbon nanotube reinforced aluminum alloy materials according to the following weight percentages for later use: 4% carbon nanotubes, 0.4% magnesium, 0.7% manganese, 0.1% chromium, 0.01% nickel, 0.1% titanium, copper 0.01%, other unavoidable impurities ≤ 0.01%, the balance is aluminum;

[0024] 2) Put the above ingredients into a ball mill, add paraffin for ball milling, add 0.5ml of paraffin per gram of carbon nanotube reinforced aluminum alloy material ingredients, ball milling time 12h, speed 600r / min, ball to material mass ratio 15:1, The mass ratio of large and small balls is 1:3 to obtain ball milled powder;

[0025] 3) The ball-milled powder obtained in step 2) was vacuum hot-pressed at a temperature of 590°C and a pressure of 10T for 15 hours to prepare a carbon nanotube-strengthened aluminum alloy blank;

[0026] 4) Heating the blank obtained in step 3) at 560°C, and then hot-extruding it at a pressure of 15T to obtai...

Embodiment 2

[0030] 1) The ingredients needed to prepare carbon nanotube reinforced aluminum alloy materials are weighed according to the following weight percentages for later use: carbon nanotubes 5%, magnesium 0.6%, manganese 0.4%, chromium 0.08%, nickel 0.01%, titanium 0.09%, copper 0.01%, other unavoidable impurities ≤ 0.01%, the balance is aluminum.

[0031] 2) Put the above ingredients into a ball mill, add polyethylene glycol for ball milling, add 0.4ml polyethylene glycol per gram of carbon nanotube reinforced aluminum alloy material ingredients, ball milling time 12h, speed 600r / min, ball material quality The ratio is 20:1, the mass ratio of large and small balls is 1:2, and the ball milled powder is obtained;

[0032] 3) The ball-milled powder obtained in step 2) was vacuum hot-pressed at a temperature of 600°C and a pressure of 12T for 10 hours to prepare a carbon nanotube-strengthened aluminum alloy blank;

[0033] 4) Heating the billet obtained in step 3) at 520°C, and then ...

Embodiment 3

[0037] 1) The ingredients needed to prepare carbon nanotube reinforced aluminum alloy materials are weighed according to the following weight percentages for later use: carbon nanotubes 5%, magnesium 0.8%, manganese 0.5%, chromium 0.08%, nickel 0.01%, titanium 0.08%, copper 0.01%, other unavoidable impurities ≤ 0.01%, the balance is aluminum.

[0038]2) Put the above ingredients into a ball mill, add polyvinyl alcohol for ball milling, add 0.6ml of polyvinyl alcohol per gram of carbon nanotube reinforced aluminum alloy material composition, ball milling time 8h, speed 800r / min, ball material mass ratio is 25:1, the mass ratio of large and small balls is 1:3, and the ball mill powder is obtained;

[0039] 3) The ball-milled powder obtained in step 2) was vacuum hot-pressed at a temperature of 610°C and a pressure of 8T for 12 hours to prepare a carbon nanotube-strengthened aluminum alloy blank;

[0040] 4) Heating the blank obtained in step 3) at 550°C, and then hot-extruding ...

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Abstract

The invention discloses a carbon nano tube reinforced aluminum alloy core aluminum stranded wire and a preparation method thereof. A core layer of the carbon nano tube reinforced aluminum alloy core aluminum stranded wire is made of a carbon nano tube reinforced aluminum alloy material which is composed of, by weight, 1-8% of carbon nano tubes, 0.1-1% of magnesium, 0.1-1% of manganese, smaller than or equal to 0.1% of chromium, smaller than or equal to 0.1% of titanium, smaller than or equal to 0.1% of copper, smaller than or equal to 0.01% of impurities and the rest aluminum. A light-weight high-strength carbon nano tube modified alumium alloy material is prepared through nano-modification technology, enabled to reach the level of steel in strength while to be one third of steel in density and taken as a load-bearing core material, and a hard aluminum wire is stranded on an outer layer to prepare the aluminum stranded wire. The carbon nano tube reinforced aluminum alloy core aluminum stranded wire and the preparation method thereof have the advantages that the aluminum stranded wire is light in weight, small in resistance, nonmagnetic and small in sag, loss of a power transmission line can be substantially reduced, electric energy can be saved, transmission capacity can be improved, height of a power transmission tower can be reduced, steel consumption can be reduced, and the objectives of energy conservation and capacity improvement can be achieved.

Description

technical field [0001] The invention relates to a wire for power transmission, in particular to a carbon nanotube reinforced aluminum alloy cored aluminum stranded wire and a preparation method thereof. Background technique [0002] my country has a vast territory, and power generation resources are mainly concentrated in the western region, while the economically developed regions, that is, the main power consumption areas are located in the east. In order to meet the high-load power demand in economically developed areas, long-distance and large-capacity power transmission must be carried out. Due to the long transmission lines and large line losses, the annual power loss on transmission lines in our country is very alarming. As of 2012, the length of 110 kV and above transmission lines across the country has reached 1.07 million kilometers. Calculated according to the loss rate of 6.5% of power grid transmission lines in 2012, the power loss of my country's transmission ...

Claims

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Application Information

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IPC IPC(8): H01B5/10H01B1/02H01B9/00H01B13/02C22C21/00C22C21/06
Inventor 王利民穆广祺董勇军陈胜男何卫汤超
Owner STATE GRID CORP OF CHINA
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