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Moderate-intensity aluminum alloy material and preparation method thereof

A medium-strength aluminum alloy and raw material technology, applied in the field of metallurgical materials, can solve the problems of high cost investment, tight line and corridor, long construction period, etc., and achieve the effect of improving quality, low cost and convenient procurement

Inactive Publication Date: 2016-11-16
JIANGSU HENGTONG ELECTRICAL SPECIAL WIRE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the capacity expansion and reconstruction project, if the reconstruction of the entire line requires land requisition and channel cutting, this will lead to excessive investment, long construction period, and tight corridors

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A medium-strength aluminum alloy material, by weight percentage, contains the following components: Fe: 0.15%, Si: 0.35%, Mg: 0.42%, Cu: 0.05%, B: 0.01%, Ti: 0.005%, rare earth elements : 0.05%, Al: 98.1%, impurity content <0.1%, the rare earth elements are lanthanum and cerium, and the mass ratio of lanthanum to cerium is 2:1.

[0058] The specific method steps of the medium-strength aluminum alloy material preparation method are as follows:

[0059] S1: Raw material selection and smelting: inspect the raw materials, put 98.30% pure aluminum into the aluminum melting furnace for smelting, and control the temperature of the molten aluminum in the furnace to ≤760℃;

[0060] S2: Analysis of the composition of molten aluminum: transfer the molten aluminum or electrolytic raw aluminum to the holding furnace, stir evenly, and sample with a direct reading spectrometer for rapid analysis to detect Al, Fe, B, Si, Mg, La, The content of Ce, Cu, Ti;

[0061] S3: Alloying treatment: Calc...

Embodiment 2

[0082] A medium-strength aluminum alloy material, by weight percentage, contains the following components: Fe: 0.45%, Si: 0.55%, Mg: 0.62%, Cu: 0.40%, B: 0.03%, Ti: 0.02%, rare earth elements : 0.15%, Al 98.90%, impurity content 0.01%, the rare earth elements are lanthanum and cerium, and the mass ratio of lanthanum to cerium is 2:1.

[0083] The specific method steps of the medium-strength aluminum alloy material preparation method are as follows:

[0084] S1: Raw material selection and smelting: inspect the raw materials, put the purity greater than 99.30% into the aluminum melting furnace for smelting, and control the temperature of the molten aluminum in the furnace to 700°C;

[0085] S2: Analysis of the composition of molten aluminum: transfer the molten aluminum or electrolytic raw aluminum to the holding furnace, stir evenly, and sample with a direct reading spectrometer for rapid analysis to detect Al, Fe, B, Si, Mg, La, The content of Ce, Cu, Ti;

[0086] S3: Alloying treatm...

Embodiment 3

[0106] A medium-strength aluminum alloy material, by weight percentage, contains the following components: Fe: 0.25%, Si: 0.45%, Mg: 0.52%, Cu: 0.15%, B: 0.015%, Ti: 0.0082%, rare earth elements :0.09%, Al 98.20%, impurity content <0.1%, the rare earth elements are lanthanum and cerium, and the mass ratio of lanthanum to cerium is 2:1.

[0107] The specific method steps of the medium-strength aluminum alloy material preparation method are as follows:

[0108] S1: Raw material selection and smelting: inspect the raw materials, put the purity greater than 99.80% into the aluminum melting furnace for smelting, and control the temperature of the molten aluminum in the furnace to 500°C;

[0109] S2: Analysis of the composition of molten aluminum: transfer the molten aluminum or electrolytic raw aluminum to the holding furnace, stir evenly, and sample with a direct reading spectrometer for rapid analysis to detect Al, Fe, B, Si, Mg, La, The content of Ce, Cu, Ti;

[0110] S3: Alloying trea...

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Abstract

The invention discloses a medium-strength aluminum alloy material, which comprises the following components by weight percentage: Fe: 0.15-0.45%, Si: 0.35-0.55%, Mg: 0.42-0.62%, Cu: 0.05-0.40%, B: 0.01‑0.03%, Ti: 0.005‑0.02%, rare earth elements: 0.05‑0.15%, Al: 98.1‑98.9%, impurity content <0.1%, the rare earth elements are lanthanum and cerium, and the mass of lanthanum and cerium The ratio is 2:1; and the preparation method is disclosed. The invention mainly improves the quality of the aluminum billet by optimizing the design of raw materials and using them reasonably. According to the characteristics of the chemical composition of industrial aluminum ingots, aluminum master alloys are reasonably designed and selected. At the same time, through the control of smelting, refining, casting, rolling and other processes, aluminum alloy rods with tensile strength and electrical conductivity meeting the requirements of medium strength can be produced. The tensile strength of the aluminum alloy material prepared by the invention can reach 290-310Mpa at 2.00-3.00mm, 275-295Mpa at 3.00-4.00mm, and 255-275Mpa at 4.00-5.00mm. The elongation rate of this monofilament is more than 3.0%, and the resistivity is less than 30.247nΩ.m.

Description

Technical field [0001] The invention belongs to the field of metallurgical materials, relates to an aluminum alloy material, and specifically discloses a medium-strength aluminum alloy material and a preparation method thereof. Background technique [0002] With the sustained and rapid development of my country's national economy, the demand for electricity has also increased sharply. Transmission lines are required to develop in the direction of large current and ultra-high voltage, which requires an increase in the transmission capacity of wires. As my country continues to strengthen the construction of the power transmission grid, the continuous extension of the Three Gorges Transmission Project, the transmission of power from the west to the east, the mutual supply of north and south, the national interconnection, and the transformation of old lines that have been in operation for decades, the country urgently needs to build a The most reliable, safest and energy-saving power...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/03C22F1/04C22C21/08C22F1/047
CPCC22C21/00C22C1/026C22C1/03C22C21/08C22F1/04C22F1/047
Inventor 蔺亚强张营军马军张娟芳
Owner JIANGSU HENGTONG ELECTRICAL SPECIAL WIRE CO LTD
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