Production method of high-conductivity aluminium alloy sections

A technology of aluminum alloy profiles and high electrical conductivity, which is applied in the field of aluminum alloy preparation, can solve the problems of material electrical conductivity, low mechanical properties, microstructure defects, etc., and achieve the effect of improving strength, good electrical conductivity, and high strength

Inactive Publication Date: 2014-12-17
SHANDONG YUHANG SPECIAL ALLOY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The conductive rail is an important power transmission part of subways and high-speed trains. Its main function is to transmit current, so it requires good electrical conductivity. At present, the most used alloy is 6060-T6 alloy. In view of the fact that 6063T6 aluminum alloy has few main strengthening elements, the alloy Simple, so the strengthening effect is not good, the m

Method used

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  • Production method of high-conductivity aluminium alloy sections

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1

[0023] Si is 0.40%%, Fe is 0.10%%, Cu is 0.05%%, Mn is 0.05%%, Mg is 0.50%%, Zn is ≤0.10%, Ti is ≤0.10%, Cr is ≤0.10%, single impurity≤0.05%, total impurity≤0.15%, the rest is Al;

[0024] The technical parameters of extrusion are: die temperature 455°C, ingot temperature 470°C, extrusion barrel temperature 420°C, extrusion speed 3±0.5m / min.

[0025] Online quenching, quenching temperature 420±5℃, quenching speed 300℃ / min;

[0026] Use strong wind and fog to cool down.

[0027] The tensile elongation is 1.5%.

[0028] The aging temperature is 195℃, the metal is kept for 12 hours, and the aging furnace is released.

Example Embodiment

[0029] Example 2

[0030] Si is 0.45%, Fe is 0.15%, Cu is 0.07%, Mn is 0.07%, Mg is 0.53%, Zn is ≤0.10%, Ti is ≤0.10%, and Cr is ≤0.10% , Single impurity≤0.05%, total impurity≤0.15%, the rest is Al;

[0031] The mold temperature is 480℃, the ingot temperature is 490℃, the extrusion barrel temperature is 460℃, and the extrusion speed is 3.5±0.5m / min.

[0032] Online quenching, the quenching temperature is 435±5℃, and the quenching speed is 315℃ / min.

[0033] Use strong wind and fog to cool down.

[0034] The tensile elongation is 1.5%.

[0035] The aging temperature is 195℃, the metal is kept for 12 hours, and the aging furnace is released.

Example Embodiment

[0036] Example 3

[0037] Si is 0.45%, Fe is 0.15%, Cu is 0.07%, Mn is 0.07%, Mg is 0.53%, Zn is ≤0.10%, Ti is ≤0.10%, and Cr is ≤0.10% , Single impurity≤0.05%, total impurity≤0.15%, the rest is Al;

[0038] The mold temperature is 485℃, the ingot temperature is 490℃, the extrusion cylinder temperature is 470℃, and the extrusion speed is 3.6±0.5m / min.

[0039] Online quenching, the quenching temperature is 435±5℃, and the quenching speed is 315℃ / min.

[0040] Use strong wind and fog to cool down.

[0041] The tensile elongation is 1.5%.

[0042] The aging temperature is 195℃, the metal is kept for 12 hours, and the aging furnace is released.

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Abstract

The invention relates to a preparation process of aluminium alloy, in particular to a production method of high-conductivity aluminium alloy sections. The production method of the high-conductivity aluminium alloy sections is implemented by the following steps of ingot casting of cast aluminium alloy, on-line quenching, cooling, stretching, aging treating, sectional material sampling, checking, harding of section materials and packaging. The production method of the high-conductivity aluminium alloy sections has the beneficial effects that through adding a small number of Cu and coordinating the on-line quenching process with appropriate temperature, the strength of the alloy is greatly improved; the extrusion process is controlled, the extrusion temperature, the extrusion speed, the mold temperature and the ingot casting temperature are reasonably controlled, strong wind fog cooling and appropriate aging temperature and aging time are coordinated, so that the alloy has higher strength, and meanwhile has favorable electrical conductivity.

Description

technical field [0001] The present invention relates to the preparation technology of aluminum alloy, more specifically will be a kind of production method of high electric conductivity aluminum alloy profile. Background technique [0002] The conductive rail is an important power transmission part of subways and high-speed trains. Its main function is to transmit current, so it requires good electrical conductivity. At present, the most used alloy is 6060-T6 alloy. In view of the fact that 6063T6 aluminum alloy has few main strengthening elements, the alloy Simple, so the strengthening effect is not good, the mechanical properties are not high, and the impurities in the material will cause defects in the microstructure, which will affect the electrical conductivity of the material. Therefore, it is necessary to control the composition and the extrusion process as well as online quenching and heat treatment. The process is adjusted so that the strength and conductivity of th...

Claims

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Application Information

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IPC IPC(8): B23P15/20C22F1/047C22C21/06
CPCB21C37/00C22C21/06C22F1/047
Inventor 王明星王明亮王呈刚张建忠
Owner SHANDONG YUHANG SPECIAL ALLOY EQUIP
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