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Al-Fe-Cu-Mg-Ag aluminum alloy for coal cables, aluminum alloy cable and preparation method thereof

An al-fe-cu-mg-ag, aluminum alloy technology, applied in the direction of cable/conductor manufacturing, flexible cables, metal/alloy conductors, etc., can solve the problems of poor mechanical properties and corrosion resistance, electrical conductivity and mechanical The strength performance cannot meet the problems of coal mine cables, etc., to achieve the effect of improving yield strength and elongation, improving age hardening characteristics, and improving fatigue resistance

Inactive 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-Ag aluminum alloy for coal cables, aluminum alloy cable and preparation method thereof
  • Al-Fe-Cu-Mg-Ag aluminum alloy for coal cables, aluminum alloy cable and preparation method thereof
  • Al-Fe-Cu-Mg-Ag aluminum alloy for coal cables, aluminum alloy cable and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] An aluminum alloy for coal mine cables, the components and the weight percentages of each component are as follows (total weight: 1T):

[0041]

[0042] Wherein, the rare earth element RE includes Ce, La and Er, wherein the content of Ce and La accounts for 60% of the total content of the rare earth element.

[0043] The method for making Al-Fe-Cu-Mg-Ag aluminum alloy cables for coal mine cables by using the above-mentioned aluminum alloys, the processing technology includes the following steps:

[0044] a. Obtain casting material by casting the above-mentioned aluminum alloy: add the aluminum alloy components mentioned in the present invention in proportion, carry out the smelting process at a temperature of 700°C, and then cast at a temperature of 650°C to obtain an ingot ;

[0045] b. The ingot obtained in step a is solution treated at 500° C. for 4 hours, and then rapidly quenched in cooling water at 30° C.;

[0046] c. aging the ingot obtained in step b for 7 ...

Embodiment 2

[0056]

[0057] 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.

[0058] The method for making Al-Fe-Cu-Mg-Ag aluminum alloy cables for coal mine cables by using the above-mentioned aluminum alloys, the processing technology includes the following steps:

[0059] a. The casting material is obtained by casting the above-mentioned aluminum alloy: add the aluminum alloy components mentioned in the present invention in proportion, carry out the melting process at a temperature of 800°C, and then cast at a temperature of 680°C to obtain an ingot ;

[0060] b. Solid solution treating the ingot obtained in step a for 6 hours at 460°C, and th...

Embodiment 3

[0070]

[0071] Wherein, the rare earth element RE includes Ce, La and Er, wherein the content of Ce and La accounts for 60% of the total content of the rare earth element.

[0072] The method for making Al-Fe-Cu-Mg-Ag aluminum alloy cables for coal mine cables by using the above-mentioned aluminum alloys, the processing technology includes the following steps:

[0073] a. The casting material is obtained by casting the above-mentioned aluminum alloy: add the aluminum alloy components mentioned in the present invention in proportion, carry out the melting process at a temperature of 750°C, and then cast at a temperature of 650°C to obtain an ingot ;

[0074] b. Solid solution treating the ingot obtained in step a for 2 hours at 550°C, and then rapidly quenching in cooling water at 100°C;

[0075] c. aging the cast ingot obtained in step b for 10 hours at 200°C, and then raising the temperature to 300°C and rolling it into an alloy rod;

[0076] d. Under the temperature co...

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Abstract

The invention discloses Al-Fe-Cu-Mg-Ag aluminum alloy for coal cables. The aluminum alloy comprises the following components in percentage by weight: 0.2-1.1% of Fe, 0.01-0.4% of Cu, 0.01-0.4% of Mg, 0.001-0.1% of Ag, 0-0.1% of Si, 0-0.2% of B and the balance of Al and impurities, wherein the electrical resistivity of the aluminum alloy is no greater than 0.028264ohm.mm<2> / m, the breakage elongation of the aluminum alloy is no less than 10%, and the fatigue bending times of the aluminum alloy at 90 degrees is greater than or equal to 30; the aluminum alloy material is smelted, cast and rolled, thereby obtaining an aluminum alloy rod; the aluminum alloy rod is pulled, bunch-stranded and softened, thereby obtaining an aluminum alloy cable core; the cable core is subjected to extruded insulation, cabling and extruded sheathing or armoring, thereby obtaining an aluminum ally cable. The prepared aluminum ally cable has the characteristics of high strength, high conductivity, good bending property and the like, and the requirements of the coal field on the property of cables can be met.

Description

technical field [0001] The invention relates to the technical field of coal mine cables, in particular to an Al-Fe-Cu-Mg-Ag 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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IPC IPC(8): C22C21/00C22C21/16C22C21/08C22C21/06C22F1/04C22F1/047C22F1/057H01B1/02H01B7/04H01B13/00
CPCC22C21/00C22C21/06C22C21/08C22C21/16C22F1/04C22F1/047C22F1/057H01B1/023H01B7/04H01B13/012
Inventor 林泽民
Owner 林泽民
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