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Technical method for improving performance of round aluminum rod by adding B and RE elements

A process method and technology of round aluminum rods are applied in the field of materials, which can solve the problems of low quality of aluminum conductors and power loss, and achieve the effects of improving mechanical properties and electrical conductivity.

Inactive Publication Date: 2016-04-06
刘小会
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

About 400,000 tons of aluminum are used as electrical conductors in my country every year. For a long time, due to the low quality of aluminum conductors, huge losses of electrical energy have been caused in the process of power transmission.

Method used

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  • Technical method for improving performance of round aluminum rod by adding B and RE elements
  • Technical method for improving performance of round aluminum rod by adding B and RE elements
  • Technical method for improving performance of round aluminum rod by adding B and RE elements

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Embodiment Construction

[0012] A process method for adding B and RE elements to improve the performance of round aluminum rods, comprising the following steps:

[0013] (1) Ingredients: Al99.80% electrolytic aluminum liquid, Al-RE master alloy and Al-B master alloy, the chemical composition of the master alloy is as follows: Al-RE-w(RE) is 10%~12% (La accounts for 3 / 5, Ce accounts for 2 / 5), w(Si)<0.25%, w(Fe)<0.25%, the balance is Al; in Al-B, w(B) is 3%~3.35%, and the balance is Al;

[0014] (2) Smelting and casting: Add Al-RE and Al-B master alloys to molten aluminum at 780 to 800 degrees, refining, standing, degassing, filtering, and casting into round aluminum rods.

[0015] The continuous casting and rolling method adopted in the step (2).

[0016] Argon refining is used in the step (2).

[0017] Using the above-mentioned process method of adding B and RE elements to improve the performance of round aluminum rods, the influence of RE on the tensile strength of round aluminum rods can be obtai...

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Abstract

The invention provides a technical method for improving the performance of a round aluminum rod by adding B and RE elements. Al-RE and Al-B intermediate alloys are added into molten aluminum at the temperature of 780-800 DEG C, refining, standing, degassing and filtering are conducted, and the round aluminum rod is formed in a casting mode. The added misch metal RE ranges from 0.05% to 0.2% by weight and added misch metal B ranges from 0.01% to 0.045% by weight, the mechanical performance and electrical performance of the round aluminum rod can be obviously improved, the specific resistance of the round aluminum rod can be decreased to (2.72-2.76)*10-8 [omega].m, and the specific resistance, strength, plasticity and other comprehensive technical indexes of the round aluminum rod are remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a process method for improving the performance of round aluminum rods by adding B and RE elements. Background technique [0002] Round aluminum rods are the main raw materials for the production of electric power and communication aluminum cables. In order to adapt to the development of the electric power and electrical industry, in recent years, the country has put forward higher requirements on the performance of aluminum conductors (aluminum busbars, round aluminum rods, wires and cables, etc.). At present, my country's national standard stipulates that the resistivity of round aluminum rods is 2.801x10 -8 Ω.m, the international IEC standard stipulates that the index is 2.785x10 -8 Ω.m. At present, the products produced by a considerable number of manufacturers in our country do not meet these two standards. About 400,000 tons of aluminum are used as electrica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C21/00
Inventor 刘小会
Owner 刘小会
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