High-silicon and high-copper aluminum alloy and preparation method thereof

A technology of aluminum alloy and aluminum alloy ingot casting, which is applied in the field of aluminum alloy to achieve the effect of high mechanical properties, uniform internal structure and elimination of internal stress

Active Publication Date: 2014-03-05
SOUTHWEST ALUMINUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The production process of aluminum alloys in the prior art generally includes ingot preparation, extrusion, solution treatment and overaging, but the Y430 aluminum alloy prepared according to the above method still cannot meet the above performance requirements. Therefore, the present invention proposes a High-silicon and high-copper aluminum alloy with similar composition to Y430 and preparation method thereof

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  • High-silicon and high-copper aluminum alloy and preparation method thereof
  • High-silicon and high-copper aluminum alloy and preparation method thereof
  • High-silicon and high-copper aluminum alloy and preparation method thereof

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preparation example Construction

[0033] The present invention also provides a method for preparing a high-silicon and high-copper aluminum alloy, comprising the following steps:

[0034] Cast aluminum alloy ingots with the following composition: 9wt%-11wt% Si, 6.5-8.0wt% Cu, 0.5-1.0wt% Mg, 0.5wt% Fe, 0.3wt% Mn, 0.2wt% Cr , the Zn of 0.2wt%, the Ti of 0.2wt%, the aluminum of balance;

[0035] hot extruding the aluminum alloy ingot;

[0036] Quenching the hot-extruded aluminum alloy ingot at a temperature of 480°C to 510°C;

[0037] The quenched aluminum alloy ingot is subjected to aging treatment, and the temperature of the aging treatment is 155-200°C.

[0038] According to the present invention, an aluminum alloy ingot is first cast, and the method for preparing the aluminum alloy ingot is not particularly limited in the present invention, and it can be a method well known to those skilled in the art.

[0039] After the aluminum alloy ingot is prepared, the aluminum alloy ingot is hot-extruded to make the...

Embodiment 1

[0045] An 800-ton induction furnace is used to cast aluminum alloy ingots. The composition of the aluminum alloy ingots is: 9wt% Si, 6.5wt% Cu, 0.5wt% Mg, 0.5wt% Fe, 0.3wt% Mn, 0.2wt% % Cr, 0.2wt% Zn, 0.2wt% Ti and the rest of the aluminum;

[0046]The aluminum alloy ingot is extruded in an 800-ton extrusion machine. The extrusion temperature is 390°C, the extrusion coefficient is 44.94, and the extrusion speed is 1.0m / min. The aluminum alloy ingot is extruded into a specification of EL4465 aluminum alloy profiles, such as figure 1 as shown, figure 1 It is the appearance and size drawing of EL4465 aluminum alloy profile;

[0047] Place the extruded aluminum alloy profiles in a salt bath furnace for quenching at a temperature of 490°C for 20 minutes;

[0048] The quenched aluminum alloy is stretched and straightened, and the head of the stretched and straightened aluminum alloy profile is cut to 400mm, and the tail is cut to 1m to sample, and then cut into two evenly; after ...

Embodiment 2

[0050] An 800-ton induction furnace is used to cast aluminum alloy ingots. The composition of the aluminum alloy ingots is: 11wt% Si, 7wt% Cu, 0.6wt% Mg, 0.5wt% Fe, 0.3wt% Mn, 0.2wt% The Cr of 0.2wt%, the Zn of 0.2wt%, the Ti of 0.2wt% and the aluminum of balance;

[0051] The aluminum alloy ingot is extruded in an 800-ton extrusion machine. The extrusion temperature is 400°C, the extrusion coefficient is 44.94, and the extrusion speed is 0.8m / min. The aluminum alloy ingot is extruded into a specification of EL4465 aluminum alloy profiles, such as figure 1 as shown, figure 1 It is the appearance and size drawing of EL4465 aluminum alloy profile;

[0052] Place the extruded aluminum alloy profiles in an air furnace for quenching at a temperature of 490°C for 30 minutes;

[0053] The quenched aluminum alloy is stretched and straightened, and the head of the stretched and straightened aluminum alloy profile is cut to 400mm, and the tail is cut to 1m to sample, and then cut int...

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Abstract

The invention provides a high-silicon and high-copper aluminum alloy, which comprises 9 to 11 weight percent of Si, 6.5 to 8.0 weight percent of Cu, 0.5 to 1.0 weight percent of Mg, 0.5 weight percent of Fe, 0.3 weight percent of Mn, 0.2 weight percent of Cr, 0.2 weight percent of Zn, 0.2 weight percent of Ti and the balance of aluminum. The invention also provides a preparation method for the high-silicon and high-copper aluminum alloy. The method comprises the following steps of preparing an aluminum alloy ingot, performing hot extrusion on the prepared aluminum alloy ingot to obtain an aluminum alloy profile, quenching the aluminum alloy profile, and performing aging treatment on the quenched aluminum alloy profile. According to the high-silicon and high-copper aluminum alloy and the preparation method thereof, proper temperature for quenching treatment and aging treatment is selected, so that the strength and toughness of the prepared aluminum alloy profile are well matched, and production requirements are met.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a high-silicon, high-copper aluminum alloy and a preparation method thereof. Background technique [0002] Aluminum alloy is a general term for alloys based on aluminum. The main alloying elements are copper, silicon, magnesium, zinc or manganese, and the secondary alloying elements are nickel, iron, titanium, chromium or lithium. According to the different metal elements contained in aluminum alloys, aluminum alloy plates can be roughly divided into 8 categories, 1 series is industrial pure aluminum, 2 series is aluminum copper alloy aluminum plate, 3 series is aluminum manganese alloy aluminum plate, 4 series is aluminum silicon Alloy aluminum plate, 5 series is aluminum magnesium alloy aluminum plate, 6 series is aluminum magnesium silicon alloy aluminum plate, 7 series is aluminum zinc alloy aluminum plate, 8 series is aluminum and other elements. Y430 high-silicon a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22F1/043
Inventor 冉林果
Owner SOUTHWEST ALUMINUM GRP
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