Aluminum alloy lead with lanthanon yttric and preparation method thereof

A technology of rare earth elements and aluminum alloys, which is applied in the manufacture of cables/conductors, metal/alloy conductors, circuits, etc., can solve the problems of unsatisfactory complex natural conditions, rain, snow, freezing and long-distance cross-sea wiring, etc., so as to improve the strength and Thermal stability, reduced pinhole rate, and excellent overall performance

Active Publication Date: 2009-11-25
HUNAN XIANGNENG ELECTRIC WORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, a variety of conductive aluminum alloy cables have been developed, but they still cannot meet the needs of complex natural conditions, rain, snow and ice, and long-distance cross-sea wiring, and their performance still needs to be further improved.

Method used

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  • Aluminum alloy lead with lanthanon yttric and preparation method thereof
  • Aluminum alloy lead with lanthanon yttric and preparation method thereof
  • Aluminum alloy lead with lanthanon yttric and preparation method thereof

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Embodiment 1

[0022] Embodiment 1: get No. 2 technical pure aluminum 100 kilograms, it contains aluminum 99.7%, iron 0.10%, silicon 0.04%, gallium 0.01%; No. 2 commercial pure magnesium 1 kilogram; Aluminum-silicon intermediate alloy (10% Si) 5 kg; 1.5 kg of aluminum-yttrium master alloy (14% Y); put the rising raw material into a box-type resistance furnace for smelting in batches, first put the prepared aluminum material into the crucible, heat and melt it with a resistance furnace, and wait for the pure aluminum After complete melting, add dry KCl+NaCl (mass percentage 1:1) solvent to cover (both prevent oxidation and adsorption slagging and refining). When the temperature of the molten aluminum reaches 700°C, the aluminum-silicon master alloy is added, and after the aluminum-silicon master alloy is melted, pure magnesium is added and pressed into the bottom of the molten pool. Then add the Al-Y master alloy at 700 ° C, and use hexachloroethane (C 2 Cl 6 ) Degassing agent degassing, st...

Embodiment 2

[0023] Embodiment 2: 100 kilograms of No. 2 industrial pure aluminum, 1 kilogram of No. 2 industrial pure magnesium; 4.17 kilograms of aluminum-silicon master alloy (12% Si); 2.1 kilograms of aluminum-yttrium master alloy (12% Y); Put the aluminum material into the crucible, heat and melt it with a resistance furnace, add the dried MgCl+NaCl+KCl (1:1:1) solvent to cover after the pure aluminum is completely melted, and then add pure magnesium, silicon-aluminum alloy and silicon-yttrium alloys. The melted aluminum alloy melt is cast at 700-710° C. into an aluminum ingot with a diameter of 50 mm. The 50mm ingot is homogenized at 450°C / 10 hours in a resistance furnace, and then directly extruded into a 14mm screw, which is drawn into a 3-8mm cable wire on a 100-ton cold drawing machine, and then in the frame Coil on the winding machine. The coiled cables are subjected to aging treatment at 250°C / 4 hours in an electric field aging furnace with an electric field strength of 12kV / ...

Embodiment 3

[0024] Embodiment 3: 100 kilograms of No. 2 industrial pure aluminum, 1 kilogram of No. 2 industrial pure magnesium; 3.57 kilograms of aluminum-silicon master alloy (14% Si); 2.8 kilograms of aluminum-yttrium master alloy (10% Y); Put the aluminum material into the crucible, heat and melt it with a resistance furnace, and then add the dried KCl+MgCl after the pure aluminum is completely melted 2 +BaCl 2 +CaF 2 (40:40:5:15) solvent covering, then add pure magnesium, silicon-aluminum alloy and silicon-yttrium alloy. . The melted aluminum alloy melt is cast at 700-710° C. into an aluminum ingot with a diameter of 50 mm. The 50mm ingot is homogenized at 450°C / 10 hours in a resistance furnace, and then directly extruded into a 14mm screw, which is drawn into a 3-8mm cable wire on a 100-ton cold drawing machine, and then in the frame Coil on the winding machine. The coiled cables are subjected to aging treatment at 150°C / 10 hours in an electric field aging furnace with an elect...

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Abstract

The invention discloses an aluminum alloy lead with lanthanon yttric and preparation method thereof. The specific component and weight percentage of the invention are Si0.5%-0.7%, Mg0.6%-0.9%, Fe 0.1%-0.2%, Y 0.2%-0.8%, Al residue. The preparation method is following: preparing the elements according to the alloy design to prepare aluminum alloy wire material via melting, casting, homogenization, extrusion and wire drawing, preparing the cables via winding to obtain the aluminum alloy lead with great intensity and conduction via the electric field time effect heat treatment. The aluminum alloy lead with high intensity of the invention adds the lanthanon yttric to purify the melting body and reduce the silicon quantity in the alloy further enhance the conductive rate of the melting on the one hand; on another hand to thin the crystal grain and enhance intensity of the alloy wire; the generatrix intending intensity is 260MPa and the conductive rate can achieve 57% IACS.

Description

technical field [0001] The invention relates to the technical field of manufacturing aluminum conductor cable materials, in particular to a high-strength and high-conductivity aluminum alloy cable containing rare earth element yttrium and a preparation method thereof. Background technique [0002] In the field of power transmission, aluminum is light, cheap, and has good conductivity, high specific strength, and good wear resistance, so it occupies a dominant position in the field of electrical engineering. On overhead transmission lines, especially on ultra-high voltage lines and large-span lines, aluminum alloy cables have always been the main material of overhead transmission cables. Among them, Al-Mg-Si alloy has excellent mechanical properties and physical properties. The United States, Japan and other countries have applied such cables to high-voltage transmission lines, such as 6201 and 6101, which are widely used. The alloy can precipitate dispersed coherent and sem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B5/02H01B1/02H01B13/00C22C21/02C22C21/08C22C21/00C22C1/02C22F1/04C22F1/043C22F1/047
Inventor 易丹青陈海兵王斌孙顺平王先周曾红波
Owner HUNAN XIANGNENG ELECTRIC WORKS
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