Al-Fe-Cu-Mg-Zr series aluminum alloy for cables for coal mines and aluminum alloy cable

A technology of al-fe-cu-mg-zr and aluminum alloy, which is applied in the field of Al-Fe-Cu-Mg-Zr series aluminum alloy and aluminum alloy cable for coal mine cables, can solve the problem that the electrical conductivity and mechanical strength cannot meet the requirements Coal mine cables, poor mechanical properties and corrosion resistance, etc., to improve mechanical strength and tensile properties, improve yield strength and elongation, and modify fatigue resistance bending properties

Active Publication Date: 2015-01-21
林泽民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, aluminum core cables have been developed. However, ordinary aluminum core cables have defects such as poor mechanical properties and corrosion resistance, and do not have good bending properties to meet the frequent movement of coal mine cables; and according to the harsh conditions of coal mine cables The environment has high requirements on the conductivity and mechanical strength of the cable conductor, but the conductivity and mechanical strength of the existing ordinary aluminum core cables cannot meet the requirements of coal mine cables

Method used

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  • Al-Fe-Cu-Mg-Zr series aluminum alloy for cables for coal mines and aluminum alloy cable
  • Al-Fe-Cu-Mg-Zr series aluminum alloy for cables for coal mines and aluminum alloy cable
  • Al-Fe-Cu-Mg-Zr series aluminum alloy for cables for coal mines and aluminum alloy cable

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preparation example Construction

[0035] In the present invention, the preparation method of the aluminum alloy conductor wire core used in the aluminum alloy cable for coal mine comprises the following steps:

[0036] a. Obtain casting materials by casting molten aluminum alloys: add the aluminum alloy components mentioned in the present invention in proportion, carry out the smelting process at 700-800°C, and then cast at 650-680°C to obtain cast ingot;

[0037] b. Solid solution treating the ingot obtained in step a for 2-6 hours in the range of 460-550°C, and then rapidly quenching in cooling water at 20-100°C;

[0038] c. aging the ingot obtained in step b for 6-10 hours in the range of 150-250°C, then heating up to 300-400°C, and rolling it into an alloy rod;

[0039] d. In the range of 280-300 ° C, the alloy rod rolled in step c is subjected to drawing treatment, so that the cross-sectional area is reduced to 50-60% of the cross-sectional area of ​​the alloy rod in step c, and an aluminum alloy wire is...

Embodiment 1

[0045] A kind of Al-Fe-Cu-Mg-Zr series aluminum alloy for coal mine cable, the components and the weight percent of each component are as follows (total weight: 1T):

[0046]

[0047] In the above-mentioned aluminum alloy materials, it is preferable to add a certain amount of B. As an aluminum alloy component, B can improve the performance of the alloy, especially the electrical performance and elongation performance, and the performance of the alloy can be guaranteed through a reasonable ratio of each component.

[0048] The method for preparing an aluminum alloy conductor core by using the above-mentioned aluminum alloy material, the specific steps are as follows:

[0049] 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;

[0050] b. Solid solution treating the ingot obtained in step a for 3 hou...

Embodiment 2

[0062] An aluminum alloy for coal mine cables, the components and the weight percentages of each component are as follows (total weight: 1T):

[0063]

[0064] In the above aluminum alloy materials, a certain amount of Si and rare earth elements are added, Mg and Si interact to form a MgSi strengthening phase, increase the recrystallization temperature and change the aging behavior, so that the recrystallized grains of the product can be further refined, and the strength and toughness can be improved. Improvement, plasticity and corrosion resistance are improved, yield strength and elongation of aluminum alloy are increased, reprocessing of aluminum alloy products is avoided, production efficiency is improved, and production cost is reduced.

[0065] 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...

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Abstract

The invention discloses an Al-Fe-Cu-Mg-Zr 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, 0.01-0.4% of Mg, 0.001-0.2% of Zr, 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 conductor wire cores, and then, carrying out extruded insulation, cabling and extruded sheathing or armoring on the conductor wire cores. The Al-Fe-Cu-Mg-Zr 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 relates to the technical field of coal mine cables, in particular to an Al-Fe-Cu-Mg-Zr series aluminum alloy and an aluminum alloy cable for coal mine cables. Background technique [0002] 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. Therefore, cables for coal mines are products with high technical content in the cable industry. [0003] Ordinary cables use copper core conductors. With the over-exploitation of copper resources, copper resources are becoming increasingly tense and on the verge of scarcity. Therefore, it is necessary to use other materials to replace copper core conductors to meet market demand. Among metal materials, aluminum has the characteristics of good electrical conductivity, light weight, and low price...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C21/06C22C21/08C22C21/16H01B1/02H01B7/04H01B13/00
Inventor 林泽民
Owner 林泽民
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