High-strength, high-conductivity and heat-resisting aluminum alloy bus and production method thereof

A high-conductivity, aluminum-alloy technology, applied in the direction of metal/alloy conductors, rods/rods/wires/strip conductors, etc., can solve the problems that aluminum alloy materials cannot achieve high strength, high conductivity, heat resistance, etc.

Inactive Publication Date: 2013-03-20
BAOTOU JI TAI RARE EARTH ALUMINUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The country that studies more aluminum and aluminum alloy busbar materials is Japan, which has developed a batch of high-strength heat-resistant aluminum alloy materials. However, most researchers only conduct research on the composition of aluminum and aluminum alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A high-strength, high-conductivity, heat-resistant aluminum alloy bus bar, the chemical composition of which is:

[0032] Magnesium Mg 0.58%, silicon Si 0.46%, copper Cu 1.22%, zirconium Zr0.14%, rare earth lanthanum La 0.102%, iron Fe0.15%, manganese Mn<0.01%, copper Cu / magnesium Mg ratio is 2.10, balance For aluminum Al.

[0033] The preparation method of a high-strength, high-conductivity, heat-resistant aluminum alloy busbar is as follows:

[0034] 1. Melt the aluminum ingot or molten aluminum for remelting at 750°C and keep it warm;

[0035] 2. Add aluminum-silicon, aluminum-copper, and aluminum-zirconium master alloys at a temperature of 740°C according to the above-mentioned aluminum alloy mass percentage content to melt them all, and stir until the melt is uniform;

[0036] 3. Keep warm at 740°C and pass in nitrogen and argon mixed gas for refining (N 2 / Ar volume ratio: 3 / 1), the ventilation pressure is controlled at 3 atmospheres, and the ventilation flow i...

Embodiment 2

[0048] A high-strength, high-conductivity, heat-resistant aluminum alloy busbar, the chemical composition of which is:

[0049] Magnesium Mg 0.76%, silicon Si 0.58%, copper Cu 1.56%, zirconium Zr 0.18%, rare earth La 0.19%, iron Fe 0.22%, manganese Mn<0.01%, copper Cu / magnesium Mg ratio is 2.05, the rest is aluminum Al.

[0050] The preparation method of a high-strength, high-conductivity, heat-resistant aluminum alloy busbar is as follows:

[0051] 1. Melt the aluminum ingot or molten aluminum for remelting at 745°C and keep it warm;

[0052] 2. Add aluminum-silicon, aluminum-copper, and aluminum-zirconium master alloys at a temperature of 738°C according to the above-mentioned aluminum alloy mass percentage content to melt them all, and stir until the melt is uniform;

[0053] 3. Keep warm at 740°C and pass in nitrogen and argon mixed gas for refining (N 2 / Ar volume ratio: 3 / 1), the ventilation pressure is controlled at 3 atmospheres, and the ventilation flow is controll...

Embodiment 3

[0065] A high-strength, high-conductivity, heat-resistant aluminum alloy bus bar, the chemical composition of which is:

[0066] Magnesium Mg 0.88%, silicon Si 0.72%, copper Cu 1.76%, zirconium Zr0.22%, rare earth La 0.26%, iron Fe0.24%, manganese Mn<0.01%, copper Cu / magnesium Mg ratio is 2.00, the rest is aluminum Al.

[0067] The preparation method of a high-strength, high-conductivity, heat-resistant aluminum alloy busbar is as follows:

[0068] 1. Melt the aluminum ingot or molten aluminum for remelting at 738°C and keep it warm;

[0069] 2. Add aluminum-silicon, aluminum-copper, and aluminum-zirconium master alloys at a temperature of 735°C according to the above-mentioned aluminum alloy mass percentage content to melt them all, and stir until the melt is uniform;

[0070] 3. Keep warm at 740°C and pass in nitrogen and argon mixed gas for refining (N 2 / Ar volume ratio: 3 / 1), the ventilation pressure is controlled at 3 atmospheres, and the ventilation flow is controlle...

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Abstract

The invention discloses a high-strength, high-conductivity and heat-resisting aluminum alloy bus and a production method thereof. The high-strength, high-conductivity and heat-resisting aluminum alloy bus comprises the following components in percentage by mass: 0.4-1.1 percent of magnesium (Mg), 0.3-0.9 percent of silicon (Si), 0.85-2.1 percent of copper (Cu), 0.03-0.3 percent of zirconium (Zr), 0.05-0.38 percent of rare earth (La), less than 0.4 percent of Ferrum (Fe), less than 0.01 percent of manganese (Mn) and the balance of aluminum (Al), wherein the ratio of Cu to Mg is 1.9-2.3. The production method comprises the steps of: uniformly annealing a cast ingot obtained through smelting and casting for 10-20h at a temperature of 470-550 DEG C, furnace-cooling; controlling the temperature of the cast ingot to be 480-540 DEG C for thermally deforming, wherein the final temperature of the thermal deformation is not less than 380 DEG C, the total deformation rate of the thermal deformation reaches 80-94 percent; then carrying out cold deformation on a thermally deformed blank at the total deformation rate of 80-90 percent; annealing the deformed product, wherein the annealing temperature is 330-350 DEG C, the insulation time is 2h; carrying out solution treatment for 1-3h at a temperature of 490-525 DEG C; and carrying out artificial ageing treatment for 24-36h at a temperature of 175-200 DEG C.

Description

technical field [0001] The invention relates to a production method of a high-strength, high-conductivity, heat-resistant aluminum alloy bus bar material, which belongs to the technical field of nonferrous metals. Background technique [0002] Bus bars are generally used for the connection of voltage distribution devices at all levels in substations, as well as the connection of electrical equipment such as transformers and corresponding power distribution devices. Most of them use bare or twisted wires with rectangular or circular cross-sections. and transmit electricity. In order to achieve high conductivity, the busbar is mostly made of high conductivity copper (copper bar) and aluminum materials. [0003] At present, most of the busbar materials used in China are soft aluminum, soft aluminum alloy, hard aluminum and hard aluminum alloy. According to the national standard (GB / T5585.2-2005 aluminum and aluminum alloy bus bars), the DC resistivity of soft aluminum and sof...

Claims

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Application Information

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IPC IPC(8): C22C21/12C22C1/02C22F1/057C21D8/06H01B1/02H01B5/02
Inventor 菅少霆刘春兰李志刚高平刘子瑜邸建辉李鹏张登峰周丽郭在在李淑利
Owner BAOTOU JI TAI RARE EARTH ALUMINUM CO LTD
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