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A high-strength aluminum-magnesium-silicon-calcium conductive aluminum alloy and its preparation method

An aluminum-magnesium-silicon-calcium and aluminum alloy technology is applied in the field of conductive aluminum alloy processing and preparation, which can solve the problems of low strength and limited application, and achieve the effects of increased strength, low cost, and easy industrial production.

Active Publication Date: 2021-12-21
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the problem of the aluminum-magnesium-silicon alloy wires currently used in industry is that the electrical conductivity is slightly higher, but the strength is low, and the two are contradictory, which greatly limits its application in the field of long-distance power transmission.

Method used

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  • A high-strength aluminum-magnesium-silicon-calcium conductive aluminum alloy and its preparation method
  • A high-strength aluminum-magnesium-silicon-calcium conductive aluminum alloy and its preparation method
  • A high-strength aluminum-magnesium-silicon-calcium conductive aluminum alloy and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The mass percentage of each element in the high-strength aluminum-magnesium-silicon-calcium conductive aluminum alloy is Mg 0.59%, Si 0.54%, Ca 0.253%, the balance is Al, and the impurity content is ≤ 0.1%. The preparation method includes the following steps:

[0037] (1) Smelting cast alloy

[0038] The preparation of this alloy is completed in a crucible resistance furnace and under the protection of argon by ordinary gravity casting method:

[0039] ① Put the weighed and polished 472.82g Al block (purity above 99.8%), 22.5g Al-12Si master alloy, 4.68g Mg-10Al-27Ca eutectic master alloy together with the weighed covering agent and refining agent Dry in a drying oven.

[0040] ②Material brushing: Put the graphite crucible into a resistance furnace to heat, and start brushing when the temperature reaches 400°C, and evenly and firmly attach the prepared coating to the inner wall of the crucible, brushing at least three times.

[0041] ③Feeding: After the brushing is co...

Embodiment 2

[0058] The mass percentage of each element in the high-strength aluminum-magnesium-silicon-calcium conductive aluminum alloy is Mg 0.59%, Si 0.50%, Ca 0.253%, the balance is Al, and the impurity content is ≤ 0.1%. The preparation method includes the following steps:

[0059] (1) Smelting cast alloy

[0060] The preparation of this alloy is completed in a crucible resistance furnace and under the protection of argon by ordinary gravity casting method:

[0061] ① Put the weighed and polished 474.49g Al block (purity above 99.8%), 20.83g Al-12Si master alloy, 4.68g Mg-10Al-27Ca eutectic master alloy together with the weighed covering agent and refining agent Dry in a drying oven.

[0062] ②Material brushing: Put the graphite crucible into a resistance furnace to heat, and start brushing when the temperature reaches 400°C, and evenly and firmly attach the prepared coating to the inner wall of the crucible, brushing at least three times.

[0063] ③Feeding: After the brushing is c...

Embodiment 3

[0080] The mass percentage of each element in the high-strength aluminum-magnesium-silicon-calcium conductive aluminum alloy is Mg 0.59%, Si 0.9%, Ca 0.253%, the balance is Al, and the impurity content is ≤ 0.1%. The preparation method includes the following steps:

[0081] (1) Smelting cast alloy

[0082] The preparation of this alloy is completed in a crucible resistance furnace and under the protection of argon by ordinary gravity casting method:

[0083] ① Put the weighed and polished 457.82g Al block (purity above 99.8%), 37.5g Al-12Si master alloy, 4.68g Mg-10Al-27Ca eutectic master alloy together with the weighed covering agent and refining agent Dry in a drying oven.

[0084] ②Material brushing: Put the graphite crucible into a resistance furnace to heat, and start brushing when the temperature reaches 400°C, and evenly and firmly attach the prepared coating to the inner wall of the crucible, brushing at least three times.

[0085] ③Feeding: After the brushing is com...

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Abstract

The invention discloses a high-strength aluminum-magnesium-silicon-calcium conductive aluminum alloy and a preparation method thereof. The mass percentage of each element in the high-strength aluminum-magnesium-silicon-calcium conductive aluminum alloy is 0.59-0.9% of Mg, 0.5-0.9% of Si, 0.253-0.386% of Ca, the balance is Al, and the impurity content is ≤0.1%. (purity is more than 99.8%), Al-12Si master alloy, Mg-10Al-27Ca eutectic master alloy are raw materials, adopt common gravity casting method to smelt and prepare as-cast Al-Mg-Si-Ca alloy; Through solid solution, water After quenching and pre-aging treatment, two passes of cold rolling and hot rolling are carried out by controlling the reduction, and finally aging treatment is carried out to produce a high-strength aluminum-magnesium-silicon-calcium conductive aluminum alloy. The high-strength aluminum-magnesium-silicon-calcium conductive aluminum alloy prepared by this method has greatly improved its mechanical properties under relatively high electrical conductivity, and expanded its application in the field of power transmission.

Description

technical field [0001] The invention relates to the technical field of processing and preparation of conductive aluminum alloys, in particular to a high-strength aluminum-magnesium-silicon-calcium conductive aluminum alloy and a preparation method thereof. Background technique [0002] With the continuous development of my country's economy, the demand for electricity in various industries is increasing year by year, and there is an urgent need for a wire material with light weight, high conductivity, and high strength. 6xxx series aluminum-magnesium-silicon alloys are often used as overhead transmission wires because of their electrical conductivity, high specific strength, good corrosion resistance and long service life. At present, traditional processes are often used to prepare aluminum-magnesium-silicon alloy wires in industry, including solution treatment, water quenching after solution, cold drawing and artificial aging. The aluminum-magnesium-silicon alloy prepared ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/08C22C21/02C22C1/03C22F1/05C22F1/047C22F1/043C21D1/18C21D8/02
CPCC22C21/08C22C21/02C22C1/026C22C1/03C22F1/05C22F1/047C22F1/043C22F1/002C21D8/0226C21D8/0236C21D8/0263C21D8/0247
Inventor 边丽萍郑毅薛峰平梁伟赵兴国田丰
Owner TAIYUAN UNIV OF TECH
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