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Preparation method of continuous cast-rolled aluminum alloy material

A technology of aluminum alloy and aluminum alloy melt, which is applied in the direction of ventilation arrangement, etc., can solve problems such as improper composition ratio, low strength of finished product, and influence on service life, so as to solve the problems of coarse structure, increase yield rate, and increase tensile strength Effect

Active Publication Date: 2020-11-27
包头常铝北方铝业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the continuous casting and rolling aluminum alloy materials for louvers in the prior art, due to improper composition ratio of raw materials in the preparation process, as well as improper processes such as smelting, casting and rolling, resulting in low strength of the finished product and affecting the service life

Method used

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Examples

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Effect test

preparation example Construction

[0026] The preparation method of the continuous casting and rolling aluminum alloy material of the present invention comprises the following steps:

[0027] (1) Proportioning the raw materials of the aluminum alloy material according to the composition and weight percentage, the raw materials include 0.4-0.6% by weight of Fe, 0.5-0.8% by weight of Si, 0.2-0.4% by weight of Mn, 0.2-0.3% by weight % by weight of Cu, 0.6-0.8% by weight of Mg, 0-0.1% by weight of Zn, 0-0.05% by weight of Ti, 0.005-0.008% by weight of B and 0.06-0.08% by weight of rare earth elements, the balance being aluminum , wherein the rare earth element is Yb and / or Lu;

[0028] (2) Melting the proportioned raw materials at 715-735°C for 1-3 hours, followed by refining, slag removal, online degassing and filtration;

[0029] (3) Continuously casting the aluminum alloy melt obtained in step (2) at a casting rate of 600-800mm / min at 660-680°C to obtain a cast-rolled coil with a thickness of 5-7mm;

[0030] (...

Embodiment 1

[0046] (1) Proportioning the raw materials of the aluminum alloy material according to the composition and weight percentage, the raw materials include 0.45% by weight of Fe, 0.7% by weight of Si, 0.25% by weight of Mn, 0.25% by weight of Cu, 0.75% by weight Mg, 0.05% by weight of Zn, 0.025% by weight of Ti, 0.006% by weight of B and 0.07% by weight of rare earth elements, and the balance is aluminum, wherein the rare earth elements are a mixture of Yb and Lu;

[0047] (2) Melting the proportioned raw materials at 725°C for 2 hours, then refining at 700°C for 2 hours, removing slag, degassing online, and filtering with an 80-mesh ceramic filter;

[0048] (3) Continuously cast and roll the aluminum alloy melt obtained in step (2) at a casting rate of 680mm / min at 670°C to obtain a cast-rolled coil with a thickness of 6mm;

[0049] (4) cooling the cast-rolled coil obtained in step (3) to 45° C. for cold rolling to obtain a cold-rolled aluminum coil with a thickness of 1.5 mm;

...

Embodiment 2

[0053] (1) Proportioning the raw materials of the aluminum alloy material according to the composition and weight percentage, the raw materials include 0.6% by weight of Fe, 0.5% by weight of Si, 0.4% by weight of Mn, 0.2% by weight of Cu, 0.65% by weight Mg, 0.09% by weight of Zn, 0.05% by weight of Ti, 0.008% by weight of B and 0.06% by weight of rare earth elements, the balance is aluminum, wherein the rare earth element is Yb;

[0054] (2) Melting the proportioned raw materials at 715°C for 3 hours, then refining at 720°C for 1 hour, removing slag, degassing online, and filtering with a 50-mesh ceramic filter;

[0055] (3) Continuous casting and rolling of the aluminum alloy melt obtained in step (2) at a casting rate of 600 mm / min at 660° C. to obtain a cast-rolling coil with a thickness of 5 mm;

[0056] (4) cooling the cast-rolled coil obtained in step (3) to 35° C. for cold rolling to obtain a cold-rolled aluminum coil with a thickness of 2 mm;

[0057] (5) performing...

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Abstract

The invention relates to the technical field of aluminum alloy material preparation, and discloses a preparation method of a continuous cast-rolled aluminum alloy material. The method comprises the following steps of (1) proportioning raw materials of the aluminum alloy material; (2) smelting the raw material at 715-735 DEG C for 1-3 hours, and then refining, slagging off, degassing on line and filtering; (3) carrying out continuous cast rolling on the aluminum alloy melt at the cast rolling rate of 600-800 mm / min at the temperature of 660-680 DEG C, thereby obtaining a cast-rolled coil with the thickness of 5-7 mm; (4) cooling the cast-rolled coil to 35-55 DEG C for cold rolling; (5) carrying out intermediate cooling on the cold-rolled aluminum coil at the temperature of 220-250 DEG C after being trimmed, and heat preservation is conducted for 5-10 h; and (6) cold-rolling the aluminum coil into an aluminum material with the thickness of 0.1-0.15 mm, and straightening, correcting and cutting the aluminum material into a finished product. According to the method disclosed by the invention, the components and the content of the raw material of the aluminum alloy material are optimized, and an intermediate annealing mode is adopted, so that the aluminum alloy material finished product has excellent tensile strength.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy preparation, in particular to a preparation method of continuous casting and rolling aluminum alloy. Background technique [0002] Aluminum alloy shutters are deeply loved by consumers because of their beautiful appearance, good ventilation and shading properties, and waterproof, moisture-proof, and mildew-proof. However, the continuous casting and rolling aluminum alloy materials for louvers in the prior art, due to improper composition ratio of raw materials in the preparation process, as well as improper processes such as smelting, casting and rolling, lead to low strength of the finished product and affect the service life. Contents of the invention [0003] The purpose of the present invention is to overcome the problems existing in the prior art and provide a method for preparing continuous casting and rolling aluminum alloy materials. The method optimizes the composition and conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C21/08C22C1/02C22C1/06C22F1/043C22F1/047C22F1/05E06B7/08
CPCC22C1/026C22C1/06C22C21/02C22C21/08C22F1/043C22F1/047C22F1/05E06B7/08
Inventor 张海平吕兵辉叶普庆
Owner 包头常铝北方铝业有限责任公司
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