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Aluminum alloy for high-flux continuous casting and rolling narrow crystallizing temperature interval and preparation technology thereof

A technology of continuous casting and rolling, crystallization temperature, applied in the field of aluminum alloy manufacturing, which can solve problems such as poor casting fluidity, segregation, and large crystallization temperature range of 5052 aluminum alloy

Active Publication Date: 2018-10-02
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, high-throughput continuous casting and rolling can be used to produce 5052 aluminum alloy sheets, but due to the large crystallization temperature range of 5052 aluminum alloy, the casting fluidity is poor, and defects such as segregation and porosity will occur. These defects have a strong "hereditary" , which directly affects the performance of the final product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The invention provides an aluminum alloy used in high-throughput continuous casting and rolling with a narrow crystallization temperature range. The components and weight percentages of the components included in the aluminum alloy are as follows: Mg: 2.0%, Cr: 0.45%, Si: 0.15%, Cu: 0.02%, Mn: 0.06%, Ti: 0.016%, Fe: 0.14%, the balance is Al, and the product of this ratio is recorded as M1;

[0032] The preparation process of the aluminum alloy used in high-throughput continuous casting and rolling with a narrow crystallization temperature range mainly includes a smelting process, a casting process and a rolling process;

[0033] The first step melting process

[0034] After cleaning the furnace, add electrolytic aluminum solution;

[0035] When all the furnace materials are melted, the slag removal should be carried out in time within the temperature control range of the melt. Before the slag removal, the solvent must be evenly sprinkled into the furnace. The tempe...

Embodiment 2

[0051] The invention provides an aluminum alloy used in high-throughput continuous casting and rolling with a narrow crystallization temperature range. The components and weight percentages of the components included in the aluminum alloy are as follows: Mg: 2.2%, Cr: 0.25%, Si: 0.15%, Cu: 0.03%, Mn: 0.05%, Ti: 0.019%, Fe: 0.17%, the balance is Al, and the product with this ratio is recorded as M2.

[0052] The preparation method of this embodiment is the same as that of Example 1.

[0053] The sample is thermally analyzed by a NETZSCH DSC 404C thermal analyzer. The temperature range is 25°C-700°C, and the heating rate is 10°C / min; The test and crystallization temperature interval size analysis, the results are shown in Table 2.

Embodiment 3

[0055] The invention provides an aluminum alloy used in high-throughput continuous casting and rolling with a narrow crystallization temperature range. The components and weight percentages of the components included in the aluminum alloy are as follows: Mg: 2.5%, Cr: 0.35%, Si: 0.15%, Cu: 0.03%, Mn: 0.06%, Ti: 0.018%, Fe: 0.15%, the balance is Al, and the product of this proportion is recorded as M3.

[0056] The preparation method of this embodiment is the same as that of Example 1.

[0057] The sample is thermally analyzed by a NETZSCH DSC 404C thermal analyzer. The temperature range is 25°C-700°C, and the heating rate is 10°C / min; The test and crystallization temperature interval size analysis, the results are shown in Table 2.

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PUM

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Abstract

The invention provides an aluminum alloy for a high-flux continuous casting and rolling narrow crystallizing temperature interval and a preparation technology thereof. The aluminum alloy comprises thefollowing components in percentage by weight: 1.8-2.5% of Mg, 0.25-0.45% of Cr, 0.15-0.40% of Si, 0.01-0.1% of Cu, 0.01-0.1% of Mn, 0.01-0.05% of Ti, 0-0.35% of Fe, and the balance Al. With the adoption of the aluminum alloy and the preparation technology, the problem of casting defects such as that an existing 5052 aluminum alloy is easily subjected to segregation due to large crystallizing temperature interval while being used for high-flux continuous casting and rolling production can be solved.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy manufacturing, and in particular relates to an aluminum alloy used in high-throughput continuous casting and rolling with a narrow crystallization temperature range and a preparation process thereof. Background technique [0002] Aluminum alloys are widely used due to their high strength, good candle resistance and excellent high temperature plasticity. Among them, 5052 aluminum alloy is one of the most widely used products in the Al-Mg series. It has the advantages of medium and high strength, good fatigue resistance and welding performance, good resistance to marine atmospheric corrosion and excellent low temperature stability, etc., 5052 Alloy plates are widely used in aircraft, vehicles, ships, instruments, containers and other products. According to GB / T3190-2008 "Chemical Composition of Deformed Aluminum and Aluminum Alloys" national standard: 5052 aluminum alloy mainly includes the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C1/02C22C1/06B22D11/11B22D11/119B22D11/117C22F1/047B21B1/46
CPCB21B1/463B22D11/11B22D11/117B22D11/119C22C1/026C22C1/06C22C21/08C22F1/047
Inventor 关绍康卢广玺康飞祥王利国朱世杰任晨星王剑锋
Owner ZHENGZHOU UNIV