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A preparation method of aluminum alloy extruded material for subway rigid suspension busbar

A technology of aluminum alloy and extruded material, which is applied in the field of preparation of aluminum alloy extruded material, can solve problems such as insufficient corrosion resistance of aluminum alloy extruded material, achieve excellent mechanical properties, prolong service life, and improve mechanical properties

Active Publication Date: 2021-06-29
FUJIAN MINFA ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, in view of the above content, the present invention provides a method for preparing aluminum alloy extrusions used for subway rigid suspension busbars to solve the problem of insufficient corrosion resistance of aluminum alloy extrusions in the prior art

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  • A preparation method of aluminum alloy extruded material for subway rigid suspension busbar

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Embodiment 1

[0024] A method for preparing an aluminum alloy extruded material used for subway rigid suspension busbars, the mass fractions of the elements in the aluminum alloy extruded material are respectively: 0.65% Mg, 0.6% Si, 0.15% Zn, 0.03% Fe , 0.06% Cu, 0.06% Mn, 0.02% Cr, 0.01% Zr, 0.02% La, 0.03% Sc, 0.015% Y, and the balance is Al. The preparation method comprises the following steps:

[0025] (1) Melting and casting: heat up the melting furnace to 725°C, add aluminum ingots and fast-melting silicon, stir and remove slag, add other components after the aluminum ingots are completely melted, and pass nitrogen and refining agents for refining after all the furnace materials are melted , refined for 25 minutes, and sampled and analyzed after slag removal, if the composition is qualified, then stand for 30 minutes, then cast into aluminum rods, and then homogenize the cast rods for 15 hours, and the temperature is controlled at 515°C; if the composition is unqualified , continue t...

Embodiment 2

[0031] A method for preparing an aluminum alloy extruded material used for subway rigid suspension busbars, the mass fractions of each element in the aluminum alloy extruded material are: 0.7% Mg, 0.7% Si, 0.1% Zn, 0.04% Fe , 0.07% Cu, 0.05% Mn, 0.01% Cr, 0.03% Zr, 0.04% La, 0.02% Sc, 0.025% Y, and the balance is Al. The preparation method comprises the following steps:

[0032] (1) Melting and casting: heat up the melting furnace to 735°C, add aluminum ingots and fast-melting silicon, stir and remove slag, add other components after the aluminum ingots are completely melted, and pass nitrogen and refining agents for refining after all the furnace materials are melted , refined for 28 minutes, and sampled and analyzed after slag removal, if the composition is qualified, then stand for 35 minutes, then cast into aluminum rods, and then homogenize the cast rods after casting for 12 hours, and the temperature is controlled at 525°C; if the composition is unqualified , continue to...

Embodiment 3

[0038] A method for preparing an aluminum alloy extruded material used for subway rigid suspension bus bars, the mass fractions of the elements in the aluminum alloy extruded material are respectively: 0.8% Mg, 0.75% Si, 0.12% Zn, 0.02% Fe , 0.08% Cu, 0.04% Mn, 0.03% Cr, 0.02% Zr, 0.03% La, 0.01% Sc, 0.02% Y, and the balance is Al. The preparation method comprises the following steps:

[0039] (1) Melting and casting: heat up the melting furnace to 745°C, add aluminum ingots and fast-melting silicon, stir and remove slag, add other components after the aluminum ingots are completely melted, and pass nitrogen and refining agents for refining after the furnace materials are completely melted , refined for 30 minutes, and sampled and analyzed after slag removal, if the composition is qualified, then stand for 40 minutes, then cast into aluminum rods, and then homogenize the cast rods for 10 hours, and the temperature is controlled at 535 °C; if the composition is unqualified , co...

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Abstract

The invention relates to the technical field of aluminum profiles, and provides a method for preparing an aluminum alloy extruded material used for subway rigid suspension bus bars. The mass fractions of each element in the aluminum alloy extruded material are: 0.65-0.8% Mg, 0.6-0.75% %Si, 0.1‑0.15% Zn, 0.02‑0.04% Fe, 0.06‑0.08% Cu, 0.04‑0.06% Mn, 0.01‑0.03% Cr, 0.01‑0.03% Zr, 0.02‑0.04% La, 0.01‑0.03% Sc , 0.015-0.025% Y, and the balance is Al. The preparation method includes melting and casting, extrusion, quenching, aging treatment, anodic oxidation, electrophoresis treatment and spraying anti-corrosion coating. The prepared aluminum alloy extrusion has excellent tensile strength, The yield strength and good corrosion resistance can meet the requirements of the subway rigid suspension busbar for aluminum alloy extrusions.

Description

technical field [0001] The invention relates to the technical field of aluminum profiles, in particular to a method for preparing an aluminum alloy extruded material used for a subway rigid suspension busbar. Background technique [0002] The rigid suspension busbar system is a power supply method for urban rail transit in which the contact wire is clamped in the busbar, and the locomotive takes the current from the top of the track through the pantograph. The system is used for the power supply of subway tunnels. It has a series of characteristics and advantages such as high safety and reliability, few parts, simple and convenient installation, low maintenance and repair costs, and saving civil construction investment. It has significant economic and social benefits. There is a row of power supply equipment on the top of the subway tunnel, which runs through the entire subway tunnel. It is called a busbar. The busbar is an aluminum alloy extruded material with a π-shaped cr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C21/08C22C1/02C22F1/043C22F1/047C22F1/05C25D11/08C25D13/06C09D163/00C09D5/08C09D7/65C09D7/61C09D7/63C09D133/04C09D5/44
CPCC08L2205/03C09D5/08C09D5/4411C09D163/00C22C1/026C22C21/02C22C21/08C22F1/043C22F1/047C22F1/05C25D11/08C25D13/04C09D7/61C09D7/63C09D7/65C09D7/70C08L83/04C08L27/16C08K5/54C08K7/00C08K3/40C08K3/36
Inventor 黄长远陈敏
Owner FUJIAN MINFA ALUMINUM
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