Aluminum alloy for extrusion and preparation method thereof

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

Active Publication Date: 2021-12-28
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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  • Aluminum alloy for extrusion and preparation method thereof
  • Aluminum alloy for extrusion and preparation method thereof
  • Aluminum alloy for extrusion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The components of aluminum alloy for extrusion and the mass percentage of each component are: Si 0.18%, Fe 0.23%, Mn2.23%, Zn 0.14%, Er 0.05%, Ti 0.02%, Be 0.06%, V 0.015%, The rest is Al and unavoidable impurities, the total amount of which is not more than 0.015%.

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

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

[0037] S2: Alloy the molten aluminum in the holding furnace, set the temperature at 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 electromagnet...

Embodiment 2

[0044] The components of the aluminum alloy for extrusion and the mass percentage of each component 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 Al and unavoidable impurities, the total amount of impurities is not more than 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 it to melt, keep it warm at 780°C, add refining agent to the melt, and use high-purity nitrogen with a purity ≥ 99.999% for a refining, refining time 40min, static After standing for 45 minutes, put the molten aluminum into the holding furnace.

[0047] S2: Alloy the molten aluminum in the holding furnace, set the temperature at 780°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 electromagn...

Embodiment 3

[0054] The components of 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 is Al and unavoidable impurities, the total amount of which is not more than 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 it to melt, keep it warm at 800°C, add refining agent to the melt, and use high-purity nitrogen with a purity ≥ 99.999% for a refining, refining time 40min, static After standing for 45 minutes, put the molten aluminum into the holding furnace.

[0057] S2: Alloy the molten aluminum in the holding furnace, set the temperature at 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 electromagnetic Stir...

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Abstract

The invention relates to an aluminum alloy for extrusion. The aluminum alloy comprises the following components of, in percentage by mass, 0.1%-0.2% of Si, 0.15%-0.25% of Fe, 1.8%-2.4% of Mn, 0.05%-0.18% of Zn, 0.03%-0.06% of Er, 0.008%-0.04% of Ti, 0.04%-0.08% of Be, 0.01%-0.02% of V and the balance of Al and inevitable impurities, and the total amount of the impurities is not more than 0.015%. The aluminum alloy is prepared through the technological steps of smelting, alloying, refining, molten aluminum online treatment, continuous casting, continuous rolling, cooling and take-up, annealing treatment and the like. The aluminum alloy is remarkably improved in the aspects of corrosion resistance, material strength, fluidity and structure continuity, the pressure bearing capacity of a prepared extrusion material is remarkably 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, airplanes, home appliances and other fields. In the process of continuous extrusion of aluminum alloy to produce condensing flat tubes, the processing cost due to die loss accounts for 30% of the total cost, and the average production of 3.5 tons of extruded products There will be different degrees of damage to the compression mold, and a new mold needs to be replaced. Therefore, how to extend the life of the extrusion die has become an urgent problem to be solved. 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 also problems such as poor structural continuity, poo...

Claims

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Application Information

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Patent Type & Authority Applications(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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