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High-conductive heat-resistant aluminium alloy conductor and preparation method thereof

An aluminum alloy wire, high conductivity technology, applied in the direction of metal/alloy conductors, root rods/rods/wires/strip conductors, etc., can solve the problem of reducing the conductivity of aluminum alloys, reducing the heat resistance of aluminum alloys, and affecting heat-resistant aluminum alloys Transmission efficiency and other issues, to achieve the effect of high strength, high conductivity

Inactive Publication Date: 2011-04-20
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Since the various elements contained in the aluminum alloy reduce the conductivity of the aluminum alloy, to improve the conductivity of the aluminum alloy, it is necessary to reduce the content of the elements contained in the aluminum alloy (including alloying elements and impurity elements), alloying elements The reduction of Zr content will lead to the reduction of heat resistance of aluminum alloy, thus affecting the power transmission efficiency of heat resistant aluminum alloy

Method used

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  • High-conductive heat-resistant aluminium alloy conductor and preparation method thereof
  • High-conductive heat-resistant aluminium alloy conductor and preparation method thereof
  • High-conductive heat-resistant aluminium alloy conductor and preparation method thereof

Examples

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Effect test

Embodiment 1

[0026] figure 1 It is a flow chart of the preparation of high-conductivity heat-resistant aluminum alloy wire, as shown in the figure, it is prepared according to the following steps:

[0027] 1. Preparation of master alloy: Take the preparation of Al-Zr alloy as an example to illustrate the preparation of master alloy. Metal Zr and 4N pure Al are weighed according to the proportion relationship that the Zr mass percentage content is 1%-3%. Put the weighed metal Zr into the feeding bin of the vacuum furnace, and then put 4N pure aluminum into the melting crucible of the vacuum furnace. After evacuating to 10-3Pa, backfill high-purity argon to the slight positive pressure in the vacuum furnace, and start to melt 4N pure aluminum. After the pure aluminum is melted, metal Zr is added to the aluminum melt through the feeding mechanism, and the metal Zr After the molten aluminum is melted and evenly mixed with the aluminum melt, the molten aluminum is poured into a high-purity mo...

Embodiment 2

[0037] Quote the alloy composition of Example 2 in Table 1, prepare according to the following steps:

[0038] 1. Prepare master alloy: prepare master alloy with the method of embodiment 1.

[0039] 2. Preparation of pure aluminum smelting and "boration" treatment: put 99.7% of the required pure aluminum into the melting furnace for smelting. Once the aluminum liquid appears in the melting furnace, add a conventional covering agent to prevent the aluminum liquid from oxidizing and absorbing gas. After the aluminum ingot is completely melted, raise the temperature to 880-900°C and keep it at this temperature for 30 minutes, then cool down the molten aluminum to 720°C, and remove the covering agent. Then add the weighed Al-B master alloy into the molten aluminum, and carry out "boration" treatment on the molten aluminum. After the Al-B intermediate is cleared, re-add the covering agent and raise the temperature of the aluminum liquid to 850°C and keep it warm for 40 minutes. T...

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Abstract

The invention provides a high-conductive heat-resistant aluminium alloy conductor and a preparation method thereof. The aluminium alloy conductor comprises the following chemical components by weight percent: 0.1-0.3% of Zr, 0.02-0.2% of Y, 0.01-0.15% of Sc and the balance of Al and other inevitable impurity elements, wherein the total amount of the other inevitable impurity elements is not more than 0.15%. The aluminium alloy conductor is prepared by the following steps: aluminium ingot fusion, boronizing, refining, alloying, secondary refining, direct water-cooling and continuous casting, annealing, drawing, stabilizing and the like. In the preparation method, the impurity content of the aluminium ingot is strictly controlled by the boronizing and the secondary refining, the conductivity of an aluminium alloyrond bar is ensured; through the stabilization treatment of a single aluminium alloy line, the conductivity of the heat-resistant aluminium alloy conductor is further improved, and the obdurability and twisting performance of the heat-resistant aluminium alloy conductor are regulated, so that the prepared aluminium alloy conductor has the characteristics of high conductivity and heat resistance, thereby meeting the requirements of industry on the performance of the aluminium alloy conductor and especially being suitable for manufacturing high-conductive heat-resistant cables.

Description

technical field [0001] The invention relates to an aluminum alloy wire, in particular to an aluminum alloy wire with high electrical conductivity and heat resistance and a preparation method thereof. Background technique [0002] The heat-resistant aluminum alloy wire is divided into two types according to the conductivity, namely 58% IACS and 60% IACS. The heat-resistant aluminum alloy with 58% IACS conductivity adds Zr to the aluminum, and the heat-resistant aluminum alloy with 60% IACS conductivity Yttrium (Y) is also added to the aluminum, and the two alloys can be used for a long time at 150°C, and their strength residual rate is ≥90%. [0003] The conductivity of the heat-resistant aluminum alloy wire widely used at present is 60% IACS, compared with the conductivity of 61% IACS of the electrical aluminum wire in the commonly used steel cored aluminum stranded wire, the line loss is increased by about 1.5%, which is This kind of energy loss is irreparable and is contra...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/02C22F1/04H01B1/02H01B5/02
Inventor 蔡元华何健平张济山
Owner UNIV OF SCI & TECH BEIJING
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