A light-weight high-conductivity heat-resistant aluminum wire and its preparation method

Active Publication Date: 2017-06-23
CENT SOUTH UNIV
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  • Abstract
  • Description
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  • 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

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  • A light-weight high-conductivity heat-resistant aluminum wire and its preparation method
  • A light-weight high-conductivity heat-resistant aluminum wire and its preparation method
  • A light-weight high-conductivity heat-resistant aluminum wire and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0057] 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 before the furnace, and the alloy melts are lowered to 730°C for heat preservation. 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 hours and cooled in the furnace, and then hot-extruded at 420°C. The extrusion ratio was 89.7, a...

Embodiment 2

[0060]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

[0063] 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

A light-weight high-conductivity and heat-resistant aluminum wire and its preparation method, the material components include B: 0.035-0.06wt.%, 0.1-0.2wt.% Zr, 0.1-0.3wt.% Er, unavoidable impurities and the balance Al , The technological process is smelting, rapid component analysis before the furnace, refining, rapid cooling casting, billet annealing, extrusion, and drawing. In addition to refining and modifying, the B element added in the invention mainly plays the role of promoting the precipitation of Al3(Er, Zr) ternary composite phase in the supersaturated solid solution containing Zr and Er. The Al3(Er, Zr) composite phase is nanoparticles coherent with the matrix and having a core-shell structure, dispersed in the aluminum matrix, and can greatly improve the electrical conductivity and heat resistance of the aluminum wire. The monofilament density obtained is less than or equal to 2.71g / cm3, the electrical conductivity at 20°C is greater than or equal to 62% IACS, the short-term heat-resistant temperature is as high as 230°C, the long-term heat-resistant temperature is as high as 210°C, and the tensile strength is greater than or equal to 165MPa. The economic benefits and the significance of energy saving and environmental protection.

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. [0002] technical background [0003] 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. [0004] The free electrons in the met...

Claims

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Application Information

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Patent Type & Authority Patents(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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