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Al‑fe‑cu‑mg‑cr aluminum alloy and aluminum alloy cables for coal mine cables

A technology of al-fe-cu-mg-cr and aluminum alloy, which is applied in the field of Al-Fe-Cu-Mg-Cr series aluminum alloy and aluminum alloy cable for coal mine cables, can solve the problem of mechanical performance and resistance of ordinary aluminum core cables. Poor corrosion performance, unable to meet the bending performance of cables used in coal mines, high electrical conductivity and high mechanical strength of cable conductors, etc., to reduce the sensitivity of stress corrosion cracking, improve mechanical strength and tensile properties, improve high temperature creep performance and fatigue resistance.

Active Publication Date: 2017-09-08
安徽中青欣意铝合金电缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, ordinary aluminum core cables have problems of poor mechanical properties and corrosion resistance, and cannot meet the requirements of good bending performance for frequent movement of cables used in coal mines; nor can they meet the requirements of the harsh environment of cables used in coal mines on the conductivity and conductivity of cable conductors. High mechanical strength requirements

Method used

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  • Al‑fe‑cu‑mg‑cr aluminum alloy and aluminum alloy cables for coal mine cables
  • Al‑fe‑cu‑mg‑cr aluminum alloy and aluminum alloy cables for coal mine cables
  • Al‑fe‑cu‑mg‑cr aluminum alloy and aluminum alloy cables for coal mine cables

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A kind of Al-Fe-Cu-Mg-Cr series aluminum alloy for coal mine cable, the components and the weight percent of each component are as follows (total weight: 1T):

[0048]

[0049] The method for preparing an aluminum alloy wire core by using the above-mentioned aluminum alloy material, the specific steps are as follows:

[0050] a. Casting molten aluminum alloys to obtain casting materials: adding the above-mentioned aluminum alloy components according to the above ratios, performing a melting process at 700°C, and then casting at 650°C to obtain ingots;

[0051] b. Solid solution treating the ingot obtained in step a for 3 hours within the range of 500°C, and then rapidly quenching in cooling water at 50°C;

[0052] c. Aging the ingot obtained in step b for 6 hours at 150°C, then raising the temperature to 350°C, and rolling it into an alloy rod;

[0053] d. Within the range of 280°C, the alloy rod rolled in step c is subjected to drawing treatment, so that the cross-...

Embodiment 2

[0061] An aluminum alloy for coal mine cables, the components and the weight percentages of each component are as follows (total weight: 1T):

[0062]

[0063] In the above aluminum alloy materials, a certain amount of Si is added, and Mg interacts with Si to form a MgSi strengthening phase, increase the recrystallization temperature and change the aging behavior, so that the recrystallization grains of the product can be further refined, the strength and toughness can be improved, and the plasticity can be improved. , The corrosion resistance is improved, the yield strength and elongation of the aluminum alloy are increased, the reprocessing of the aluminum alloy product is avoided, the production efficiency is improved, and the production cost is reduced.

[0064] The method for preparing an aluminum alloy wire core by using the above-mentioned aluminum alloy material, the specific steps are as follows:

[0065] a. Casting molten aluminum alloys to obtain casting material...

Embodiment 3

[0074] An aluminum alloy for coal mine cables, the components and the weight percentages of each component are as follows (total weight: 1T):

[0075]

[0076] In the above-mentioned aluminum alloy materials, it is preferable to add a certain amount of B and rare earth elements. B, as an aluminum alloy component, can improve the properties of the alloy, especially the electrical properties and elongation properties, and ensure the performance of the alloy through a reasonable ratio of each component. .

[0077] Rare earth elements can not only significantly improve the electrical properties of the alloy, but also have the effect of improving the fatigue resistance and bending performance of the alloy, prolonging the service life of the cable. Wherein, the rare earth element RE includes Ce, La and Pr, wherein the content of Ce and La accounts for 50% of the total content of the rare earth element.

[0078] The method for preparing an aluminum alloy wire core by using the ab...

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Abstract

The invention discloses an Al-Fe-Cu-Mg-Cr series aluminum alloy for cables for coal mines and an aluminum alloy cable. The aluminum alloy contains the ingredients in percentage by weight: 0.2-1.1% of Fe, 0.01-0.4% of Cu, 0.001-0.4% of Mg, 0.005-0.2% of Cr, 0-0.1% of Si, 0-0.2% of B and the balance of Al and impurities. The aluminum alloy cable is produced through enabling the aluminum alloy to be subjected to the processes of melting, casting and rolling, so as to obtain aluminum alloy rods, then, carrying out drawing, stranding and softening, so as to form aluminum alloy wire cores, and then, carrying out extruded insulation, cabling and extruded sheathing or armoring on the conductor wire cores. The Al-Fe-Cu-Mg-Cr series aluminum alloy for the cables for the coal mines, disclosed by the invention, has the characteristics of high strength, high conductivity, good bending property and the like; the aluminum alloy cable produced from the aluminum alloy can meet the requirements on the properties of the cable in the field of the coal mines.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloys, and in particular relates to an Al-Fe-Cu-Mg-Cr series aluminum alloy and an aluminum alloy cable for coal mine cables. Background technique [0002] Coal mine cables are high-tech products in the cable industry. Due to the complex environment, harsh working conditions, frequent movement, and short service life of cables used in coal mines, the area where gas accumulates is very dangerous. Abrasion resistance and resistance to external tensile properties are very high. [0003] Most of the cables on the market now use copper cores as conductors. However, as copper resources become increasingly tight and scarce, the demand for wires using other materials instead of copper core wires is increasing. Among metal materials, aluminum has good electrical conductivity, light weight, and low price. At the same time, people's awareness of environmental protection has strengthened in recent years,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C21/06C22C21/08C22C21/16H01B1/02H01B13/00
CPCC22C21/00H01B1/023H01B13/00
Inventor 林泽民
Owner 安徽中青欣意铝合金电缆有限公司
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