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Light high-conductivity and heat-resistant aluminum conductor and preparation method thereof

A heat-resistant aluminum, high-conductivity technology, applied in conductors, conductive materials, conductive materials, etc., can solve the problem of undisclosed alloy density, strength and heat resistance parameters, continuous casting and rolling process parameters, etc., to improve the casting structure and processing. performance, short production process, and the effect of eliminating component segregation

Active Publication Date: 2016-07-06
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Publication number is the patent of CN103498083A, and disclosed composition is 0.01~0.2wt.%Er, 0~0.3%wt.Zr, 0~0.2wt.%B, from the parameter of its embodiment description, contains Er, Zr, The electrical conductivity of the embodiment of B is only 60% IACS, and the electrical conductivity of the embodiment containing only one or both of Er and Zr elements is only 58% IACS, and the parameters of alloy density, strength and heat resistance are not disclosed And the process parameters of continuous casting and rolling

Method used

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  • Light high-conductivity and heat-resistant aluminum conductor and preparation method thereof
  • Light high-conductivity and heat-resistant aluminum conductor and preparation method thereof
  • Light high-conductivity and heat-resistant aluminum conductor and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0056] Using industrial pure aluminum ingots with a purity greater than 99.7%, Al-11.34% Zr master alloy and Al-4.7% Er master alloy as raw materials, first melt industrial pure aluminum at 760°C, then add Al-Zr and Al-Er master alloys After the intermediate alloy is completely melted and stirred evenly, the Zr, Er, and Al alloy melts are subjected to rapid component analysis in front of the furnace, and the alloy melts are lowered to 730°C for heat preservation, and then according to the total amount of impurity elements Ti and V in the alloy melts, 2 times the content and the mass percentage of B in the alloy, add Al-2.5% B master alloy for refining, so that the mass percentage of each element is: B is 0.035wt.%, Zr is 0.1wt.%, Er is 0.21wt. %, the sum of Ti, V, Cr, Mn and other impurity elements is 0.001wt.%, and Al is the balance. Stirring, standing still, slag removal, and water-cooled casting are then carried out in sequence. The bad material was kept at 480°C for 10 ho...

Embodiment 2

[0059]Using industrial pure aluminum ingots with a purity greater than 99.7%, Al-11.34% Zr and Al-4.7% Er master alloys as raw materials, melt industrial pure aluminum at 760°C, add Al-Zr, Al-Er master alloys, and wait for the intermediate After the alloy is completely melted and stirred, the Zr, Er, and Al alloy melts are subjected to rapid component analysis before the furnace, and the alloy melt is lowered to 730°C for heat preservation, and then the total content of impurity elements Ti and V in the alloy melt is 3.5 times And the mass percentage of B in the alloy, adding Al-2.5% B master alloy for refining, so that the mass percentage of each element is: B is 0.05wt.%, Zr is 0.1wt.%, Er is 0.21wt.%, Ti, The sum of V, Cr, Mn and other impurity elements is 0.001wt.%, and Al is the balance. Stirring, standing still, slag removal, and water-cooled casting are then carried out in sequence. The bad material was kept at 490°C for 8 hours and cooled in the furnace, and then hot-...

Embodiment 3

[0062] Using industrial pure aluminum ingots with a purity greater than 99.7%, Al-11.34% Zr master alloy and Al-4.7% Er master alloy as raw materials, after melting industrial pure aluminum at 760°C, adding Al-Zr and Al-Er master alloys, After the intermediate alloy is completely melted and stirred, the Zr, Er, and Al alloy melts are subjected to rapid component analysis in front of the furnace, and the alloy melt is lowered to 730°C for heat preservation, and then the total content of impurity elements Ti and V in the alloy melt is determined 5 times and the mass percentage of B in the alloy, after adding Al-2.5% B master alloy for refining, the mass percentage of each element is: B is 0.06wt.%, Zr is 0.2wt.%, Er is 0.4wt.%, Ti , V, Cr, Mn and other impurity elements total 0.001wt.%, Al is the balance. Stirring, standing still, slag removal, and water-cooled casting are then carried out in sequence. The billet was kept at 500°C for 1 hour and cooled in the furnace, and then ...

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Abstract

The invention discloses a light high-conductivity and heat-resistant aluminum conductor and a preparation method thereof. The aluminum conductor is composed of, by weight, 0.035-0.06% of B, 0.1-0.2% of Zr, 0.1-0.3% of Er, inevitable impurities and the balance Al. The technological process comprises the steps of smelting, on-the-spot fast component analyzing, refining, rapid cooling casting, blank annealing, extruding and drawing. The added B element has the refining and modifying effects and mainly has the effect of promoting supersaturated solid solutions containing Zr and Er to separate out Al3(Er and Zr) ternary composite phases; the Al3(Er and Zr) composite phases are nano particles which are coherent with a matrix and have shell-core structures, are dispersed in the aluminum matrix and can greatly improve the electricity conductivity and the heat resistance of the aluminum conductor; the density of obtained monofilaments is smaller than or equal to 2.71 g / cm<3>, the electricity conductivity of the monofilaments is greater than or equal to 62%IACS, the short-time heat-resistance temperature of the monofilaments reaches 230 DEG C, the long-term heat-resistance temperature of the monofilaments reaches 210 DEG C, and the tensile strength of the monofilaments is greater than or equal to 165 MPa; the economic benefits are remarkable, the energy is greatly saved, and the environmental friendliness is high.

Description

technical field [0001] The invention relates to a light-weight high-conductivity heat-resistant aluminum wire and a preparation method thereof, belonging to the technical field of electrical materials. technical background [0002] According to the strategic deployment of energy interconnection, my country's power grid will realize "power transmission from west to east, mutual supply between north and south, and national networking". The transmission line is far away, the transmission capacity is large, and the natural environment is complex. The tight corridor resources put forward higher requirements for transmission wires, which must not only have high electrical conductivity, but also have good heat resistance and anti-sag characteristics. Therefore, the development of an aluminum wire with high conductivity, good heat resistance and low density has become a technical problem that needs to be solved urgently in the industry. [0003] The free electrons in the metal under...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/03C22F1/04H01B1/02
CPCC22C1/026C22C1/03C22C21/00C22F1/04H01B1/023H01B1/02
Inventor 李红英宾杰高兆和
Owner CENT SOUTH UNIV
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