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A kind of aluminum alloy for extrusion and preparation method thereof

A technology of aluminum alloy and master alloy, which is applied in the direction of manufacturing tools, heat treatment equipment, furnaces, etc., can solve problems such as poor fluidity and ductility, poor toughness of aluminum alloy materials, and poor organizational continuity, so as to eliminate the interference of impurities and realize Corrosion resistance, effect of improving extrusion fluidity

Active Publication Date: 2022-07-08
JIANGSU HENGTONG ELECTRICAL SPECIAL WIRE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing aluminum alloy materials have poor fluidity and ductility, and wall breakage often occurs when extruding thin-walled products, resulting in cost losses
In addition, there are still problems such as poor structural continuity, poor corrosion resistance, and coarse grains leading to poor toughness of aluminum alloy materials.

Method used

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  • A kind of aluminum alloy for extrusion and preparation method thereof
  • A kind of aluminum alloy for extrusion and preparation method thereof
  • A kind of aluminum alloy for extrusion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The components of the aluminum alloy for extrusion and the mass percentage of each component are: Si 0.18%, Fe 0.23%, Mn 2.23%, Zn 0.14%, Er 0.05%, Ti 0.02%, Be 0.06%, V 0.015%, The rest are Al and unavoidable impurities, and the total amount of impurities does not exceed 0.015%.

[0035] The preparation method of aluminum alloy for extrusion comprises the following steps:

[0036] S1: Put the Al99.70 remelted aluminum ingot into the smelting furnace, heat and melt, keep at 795℃, add a refining agent to the solution, and use high-purity nitrogen with a purity of ≥99.999% for a refining, refining time 45min, static After 45 minutes, the molten aluminum was put into the holding furnace.

[0037] S2: Alloy the molten aluminum in a holding furnace, set the temperature to 795°C, add aluminum-iron alloy, aluminum-manganese alloy, aluminum-zinc alloy, aluminum-erbium alloy, aluminum-titanium alloy, aluminum-beryllium alloy, aluminum-vanadium alloy, and use electromagnetic St...

Embodiment 2

[0044] The composition of the aluminum alloy for extrusion and the mass percentage of each composition are: Si 0.1%, Fe 0.16%, Mn 1.8%, Zn 0.18%, Er 0.06%, Ti 0.015%, Be 0.08%, V 0.02%, the rest For Al and unavoidable impurities, the total amount of impurities does not exceed 0.015%.

[0045] The preparation method of aluminum alloy for extrusion comprises the following steps:

[0046] S1: Put the remelted aluminum ingot of Al99.70 into the smelting furnace, heat and melt it, keep it at 780℃, add a refining agent to the solution, and use high-purity nitrogen with a purity of ≥99.999% for a refining, refining time 40min, static After 45 minutes, the molten aluminum was put into the holding furnace.

[0047] S2: Alloy the liquid aluminum in a holding furnace, set the temperature to 780°C, add aluminum-iron alloy, aluminum-manganese alloy, aluminum-zinc alloy, aluminum-erbium alloy, aluminum-titanium alloy, aluminum-beryllium alloy, aluminum-vanadium alloy, use electromagnetic ...

Embodiment 3

[0054] The components of the aluminum alloy for extrusion and the mass percentage of each component are: Si 0.2%, Fe 0.2%, Mn 2%, Zn 0.05%, Er 0.03%, Ti 0.04%, Be 0.04%, V 0.01%, The rest are Al and unavoidable impurities, and the total amount of impurities does not exceed 0.015%.

[0055] The preparation method of aluminum alloy for extrusion comprises the following steps:

[0056] S1: Put the remelted aluminum ingot of Al99.70 into the smelting furnace, heat and melt it, keep it at 800 °C, add a refining agent to the solution, and use high-purity nitrogen with a purity of ≥99.999% for a refining, refining time 40min, static After 45 minutes, the molten aluminum was put into the holding furnace.

[0057] S2: Alloy the liquid aluminum in a holding furnace, set the temperature to 800 °C, add aluminum-iron alloy, aluminum-manganese alloy, aluminum-zinc alloy, aluminum-erbium alloy, aluminum-titanium alloy, aluminum-beryllium alloy, aluminum-vanadium alloy, and use electromagnet...

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Abstract

The invention relates to an aluminum alloy for extrusion. The components and the mass percentages of the components are: Si 0.1-0.2%, Fe 0.15-0.25%, Mn 1.8-2.4%, Zn 0.05-0.18%, Er 0.03-% 0.06%, Ti 0.008‑0.04%, Be 0.04‑0.08%, V 0.01‑0.02%, the rest are Al and unavoidable impurities, the total amount of impurities does not exceed 0.015%, after smelting, alloying, refining, aluminum liquid online It is prepared by process steps such as treatment, continuous casting, continuous rolling, cooling and rewinding, and annealing treatment. The aluminum alloy of the present invention is significantly improved in corrosion resistance, material strength, fluidity and organizational continuity, the pressure bearing capacity of the produced extruded material is significantly improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to the field of aluminum alloy die-casting processing, in particular to an aluminum alloy for extrusion and a preparation method thereof. Background technique [0002] Aluminum alloy extrusion products are widely used in automobiles, aircrafts, home appliances and other fields. In the process of continuous extrusion of aluminum alloys to make condensing flat tubes, the processing cost due to mold loss accounts for 30% of the total cost, and the average production of 3.5 tons of extrusion products. The press die will be damaged to varying degrees, and a new die will need to be replaced. Therefore, how to prolong the life of the extrusion die has become an urgent problem to be solved. Existing aluminum alloy materials have poor fluidity and ductility, and often break the wall when extruding thin-walled products, resulting in cost loss. In addition, there are still problems such as poor organizational continuity, poor corrosion res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/03C22C1/06C22B9/10C22B21/06C21D9/00C22F1/04
CPCC22C21/00C22C1/026C22C1/03C22C1/06C22B9/10C22B21/066C22F1/04C21D9/0075
Inventor 赵立洋张桓乔恒段妍彤张军金榕章安楠
Owner JIANGSU HENGTONG ELECTRICAL SPECIAL WIRE CO LTD
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