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Preparation method for high-conductivity heat-resistant aluminium alloy conductor

An aluminum alloy conductor, high conductivity technology, applied in the direction of metal/alloy conductors, conductors, conductive materials, etc., can solve the problems of low smoothness of extruded products, improve output and quality, reduce manufacturing costs, and high degree of process continuity Effect

Active Publication Date: 2016-06-15
江苏和拓铝线有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High-performance aluminum-zirconium heat-resistant alloy wires are prepared by rheological extrusion, and their strength can reach 224MPa. The extrusion product has low smoothness, low strength and electrical conductivity

Method used

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  • Preparation method for high-conductivity heat-resistant aluminium alloy conductor
  • Preparation method for high-conductivity heat-resistant aluminium alloy conductor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, 1 continuous casting aluminum wire rod; 2 guide wheel; 3 extrusion wheel; 4 extrusion wheel cooling; 5 boot seat; 6 groove sealing tile; Cooling control; 11-drying; 12-ECAE formed aluminum alloy rod; 13-hydraulic cylinder; 14-rotating shaft

[0027] The process method of the present invention is mainly through batching, smelting, alloying, melt purification, continuous casting and casting of aluminum wire ingots, ECAE dynamic pre-aging to prepare aluminum alloy conductive rods, continuous stretching of aluminum alloy wires, final artificial aging of wire rods, etc. process is realized. figure 2 It is a flow chart of the continuous ECAE dynamic aging forming pre-aging heat treatment process. The continuous casting aluminum wire rod 1 enters into the annular groove of the extrusion wheel 3 and the groove formed by the groove sealing tile 6 through the guide wheel 2. While the extrusion wheel 3 rotates clockwise, the extrusion wheel cools 4 an...

Embodiment 2

[0036] In the first step, after heating and melting 1855kg of 99.7% industrial pure aluminum (Wt, Fe≦0.13%, Si≦0.0.08%) in a heating furnace, at a temperature of 740-760°C, the molten pure aluminum Add 160kg of Al-10%Zr master alloy and 22kg of Al-10%Er master alloy to the melt, stir the melt after adding master alloy, when the melt temperature is 740~760℃, add AL-B master alloy, Carry out boride treatment on the aluminum melt to remove Cr, Mn, V and Ti four elements in the aluminum melt that seriously reduce the conductivity of the aluminum alloy, and allow it to react for 10 to 20 minutes;

[0037] The second step is to carry out evolutionary treatments such as degassing, impurity removal, slag removal, and covering on the melt: when the temperature of the aluminum melt reaches 755°C after boridation, use high-purity nitrogen as a carrier, and use a powder-spraying refining tank to treat the aluminum The melt is subjected to powder spraying and refining. Add 1.2kg of C2Cl6 a...

Embodiment 3

[0043] In the first step, after heating and melting 1800kg of 99.7% industrial pure aluminum (Wt, Fe≦0.13%, Si≦0.0.08%) in a heating furnace, at a temperature of 740-760°C, the molten pure aluminum Add 240kg of Al-10%Zr master alloy and 22kg of Al-Er master alloy to the melt, stir the melt after adding master alloy, when the melt temperature is 740~760℃, add AL-B master alloy, The melt is subjected to boriding treatment to remove Cr, Mn, V, and Ti four elements in the aluminum melt that seriously reduce the electrical conductivity of the aluminum alloy, and allow it to react for 20 minutes;

[0044] The second step is to carry out evolutionary treatments such as degassing, impurity removal, slag removal, and covering on the melt: when the temperature of the aluminum melt reaches 740°C after boridation, use high-purity nitrogen as a carrier, and use a powder-spraying refining tank to treat the aluminum The melt is refined by powder spraying, and the homogeneous mixed powder of ...

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Abstract

The invention discloses a preparation method for a high-conductivity heat-resistant aluminium alloy conductor, and relates to a preparation method for an alloy conductor. The method comprises the following processes: step 1, heating and melting commercially pure aluminium (containing Wt, not greater than 0.13% of Fe and not greater than 0.08% of Si) with a purity of greater than 99.7% in a heating furnace, and then adding Al-Zr intermediate alloy and Al-Er intermediate alloy in the melted pure aluminium melt; step 2, carrying out degassing, impurity removal, slagging-off, covering and other evolution treatments on the melt; step 3, discharging the melt subjected to heat insulation and standing from a heat-insulation furnace by virtue of a flow groove, and enabling the aluminium melt to sequentially flow through an online degassing system and a ceramic filtering system which are connected to the rear through the flow groove; step 4, carrying out 4-6 passes of continuous ECAE forming on an aluminium wire ingot obtained through continuous casting forming; and step 5, taking the aluminium alloy rod formed through the 4-6 passes of ECAE forming and with a diameter of 8.5-12mm as a raw material, and automatically rolling the aluminium alloy rod into a coil on a wire drawing machine. The method is a method for preparation of a high-strength high-conductivity heat-resistant aluminium alloy conductive wire, and continuous ECAE dynamic age forming, for obtaining a high-performance aluminium alloy conductive wire.

Description

technical field [0001] The invention relates to a preparation method of an alloy conductor, in particular to a preparation method of a high-conductivity heat-resistant aluminum alloy conductor. Background technique [0002] my country has a vast territory and unbalanced development. The west is rich in resources and the industry is backward; the east coast is rich in industry and scarce in resources, especially power resources. The strategic deployment of national power transmission from west to east, north-south mutual supply, and national networking, in the construction of the power grid, the requirements for overhead transmission wires are also getting higher and higher, and the construction of long-distance, large-capacity, and long-span new transmission lines Must do, "Made in China 2025" technology roadmap for 10 key technical areas: Power transmission and transformation projects need to build 1100KV UHV DC engineering complete sets of equipment demonstration applicati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/03C22C1/06C22F1/04H01B1/02
CPCC22C1/026C22C1/03C22C1/06C22C21/00C22F1/04H01B1/023
Inventor 周天国杨明学张雪飞
Owner 江苏和拓铝线有限公司
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