High-strength and high-conductivity aluminum rod material and production method

A production method and conductivity technology, which is applied to high-strength conductivity aluminum rod materials and production fields, can solve the problems of mutual constraints between aluminum resistivity and strength, reduced safety and reliability of wires, and increased raw material costs, so as to avoid annealing Effect, low cost, effect of reducing energy consumption

Inactive Publication Date: 2019-01-18
特变电工山东鲁能泰山电缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Various methods have been adopted in the industry to reduce the resistivity of aluminum conductors, but the resistivity and strength of aluminum are generally mutually restricted
For example: changing the microstructure of aluminum by annealing can increase the conductivity of aluminum from 61%IACS to above 63%IACS, but the state of aluminum changes from hard to soft, resulting in a great decrease in its strength. 160~200MPa is reduced to 60~95MPa, so that the overall breaking force of the conductor with the same cross-section is reduced by 25%~30%, and the safety and reliability of the conductor are greatly reduced, so it is not suitable for overhead laying applications; High-quality high-purity aluminum ingots are used to produce high-conductivity aluminum wire, but the increase in the purity of raw materials will inevitably lead to an increase in the cost of raw materials, making the price of high-conductivity wires much higher than the cost of ordinary wires

Method used

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  • High-strength and high-conductivity aluminum rod material and production method

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Experimental program
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Effect test

Embodiment 1

[0030] refer to figure 1 as shown,

[0031] Follow the steps below to produce aluminum rods

[0032] Put 99.70% aluminum ingots into the melting furnace, transfer to the holding furnace, adjust the temperature to maintain 740 °C, add aluminum-boron alloy, aluminum rare earth alloy, aluminum-iron alloy; adjust the mass ratio of elements to iron 0.17%, silicon 0.035%, boron 0.03%, lanthanum 0.08%, manganese, titanium, chromium and vanadium are controlled below 0.01%, adding refining agent for refining; stirring for 30 minutes, keeping the temperature at 740°C for 30 minutes; 0.6kg / cm2, the temperature is 750°C; after purification, it is filtered through a 40-mesh ceramic filter plate, passed through a large upper and lower ladle, and enters the casting machine in a horizontal casting mode, passes through a continuous rolling mill, and is cooled by a climbing rod to form a circle and close the rod; the casting temperature is 690 °C, the rolling temperature is 460 °C, and the cl...

Embodiment 2

[0034] Follow the steps below to produce aluminum rods

[0035] Put 99.70% aluminum ingots into the melting furnace, transfer to the holding furnace, adjust the temperature to maintain 750 ℃, add aluminum-boron alloy, lanthanide aluminum rare earth alloy, aluminum-iron alloy; adjust iron 0.19%, silicon 0.04%, boron 0.05%, lanthanum 0.1% Manganese, titanium, chromium and vanadium are controlled below 0.01%, adding refining agent for refining; stirring for 35 minutes, keeping the temperature at 750°C and standing for 40 minutes; after standing, the molten aluminum flows into the online degassing purification furnace, and the pressure of nitrogen in the purification tank is 0.7kg / cm2, the temperature is 760°C; after purification, it is filtered through a 40-mesh ceramic filter plate, passed through a large upper and lower ladle, and enters the casting machine in a horizontal casting mode, passes through a continuous rolling mill, and is cooled by climbing rods to form a circle an...

Embodiment 1

[0036] The aluminum rod material produced in embodiment 1 and embodiment 2 is through inspection, and the results are as follows:

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Abstract

The invention discloses a high-strength and high-conductivity aluminum rod material and a production method. The aluminum rod material comprises the following alloy components in percentage by weight:0.16-0.19% of iron, 0.03-0.45% of silicon, 0.02-0.05% of boron, 0.02-0.2% of lanthanum, less than 0.01% of manganese chrome vanadium titanium, and the balance of aluminum, wherein the ratio of iron to silicon is controlled to 3.5-6. According to the produced high-strength and high-conductivity aluminum rod material, the main performance indexes meet the requirements of GB/T3954, namely, the tensile strength is 140 MPa or higher, the conductivity is 62.5% IACS, and the single-coil aluminum bar strength deviation is 4 MPa; the tensile strength of a large-section conductor aluminum wire producedthrough the aluminum bar is not less than 180 MPa, and the tensile strength difference is not greater than 20 MPa, the conductivity is 62.5% IACS; unnecessary energy consumption in an ultrahigh voltage power transmission process is eliminated.

Description

technical field [0001] The invention relates to the technical field of aluminum wire production, and more specifically relates to a high-strength electrical conductivity aluminum rod material and a production method. Background technique [0002] As we all know, the higher the resistance of the wire, the greater the loss on the wire. According to relevant reports, the annual power loss of my country's power grid transmission lines is more than 8.0% of the transmitted power, and about 400 to 600 billion kWh of electric energy is wasted on the line as heat. How to reduce the large line loss faced by traditional wires, improve the efficiency of power transmission, and achieve energy-saving, environmentally friendly and economical operation is a problem that the majority of wire manufacturers need to think about. The main factors affecting the resistance of the wire are the conductivity of the conductor and the cross-sectional area of ​​the wire. With the rapid development o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C1/03C22C1/06
CPCC22C1/026C22C1/03C22C1/06C22C21/02
Inventor 臧德峰王淑娟王洪祥张宗军陈建孟李启肖成龙史会平张青
Owner 特变电工山东鲁能泰山电缆有限公司
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