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Aluminum alloy and preparation method thereof

A technology for aluminum alloy and aluminum alloy products, applied in the field of aluminum alloy manufacturing, can solve the problems of high tendency of casting mold mucous membrane, bad defects of aluminum alloy products, large energy consumption, etc. Mechanical strength, good uniformity

Active Publication Date: 2014-11-05
FUJIAN KINRUI HIGH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in this ordinary die-casting method, the material temperature of the general raw materials needs to be very high, which consumes a lot of energy, increases the production cost, and the solidification speed is relatively slow. , and the life of the mold is short, not only the aluminum alloy products prepared in this way have bad defects, the pass rate is low

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  • Aluminum alloy and preparation method thereof
  • Aluminum alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation method of aluminum alloy is as follows:

[0027] (A) Injecting the first aluminum liquid with a pressure of 0.6 MPa and a temperature of 630°C into a cooling mold with a temperature of 10°C for cooling and molding, and the cooling time is 7s to form a first semi-solid blank;

[0028] (B) Turning the first semi-solid blank to remove the scale on the surface, then putting it into the second aluminum liquid at 650°C for stirring to obtain the second semi-solid slurry;

[0029] (C) sending the second semi-solid slurry into the injection chamber for injection molding to obtain an aluminum alloy product.

Embodiment 2

[0031] The preparation method of aluminum alloy is as follows:

[0032] (A) The first aluminum liquid with a pressure of 0.8MPa and a temperature of 650°C is injected into a cooling model with a cooling medium of 25°C circulating cooling water using a light cylinder for cooling and molding, and the advancing speed of the electronic control valve is 200mm / s , the flow rate of the first aluminum liquid is 6L / s, and the cooling time in the cooling model is 13s to form the first semi-solid billet;

[0033] (B) Turning the first semi-solid billet to remove the 0.5mm scale on the surface, the turning rate is 600rad / min, and then the NC equipment is automatically inserted into the second aluminum liquid at 680°C and stirred for 10s to obtain The second semi-solid slurry, wherein the stirring rate is 600rad / min, and the quality of the first semi-solid blank is 2.5% of the total mass of the target product aluminum alloy product;

[0034] (C) sending the second semi-solid slurry into t...

Embodiment 3

[0036] The preparation method of aluminum alloy is as follows:

[0037] (A) The first aluminum liquid with a pressure of 0.7MPa and a temperature of 640°C is injected into a cooling model with a cooling medium of 10°C circulating cooling water using a light cylinder for cooling and molding. The propulsion rate of the light cylinder is 250mm / s, The flow rate of the first aluminum liquid is 8.5L / s, and the cooling time in the cooling model is 13s to form the first semi-solid billet;

[0038] (B) Turn the first semi-solid billet to remove the 0.8mm oxide scale on the surface, the turning rate is 800rad / min, then put it into the second aluminum liquid at 650°C and stir for 20s to obtain the second semi-solid Slurry, wherein the stirring rate is 800rad / min and eccentric stirring is adopted, the eccentric distance is 0.2mm, and the quality of the first semi-solid blank is 3% of the total mass of the target aluminum alloy product;

[0039] (C) sending the second semi-solid slurry in...

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Abstract

The invention relates to the field of aluminum alloy manufacturing, and particularly relates to an aluminum alloy and a preparation method thereof. The preparation method of the aluminum alloy comprises the following steps: (A) injecting first molten aluminum with a pressure of 0.6-0.8 MPa and a temperature of 630-650 DEG C into a cooling model at a temperature of 10-25 DEG C to cool, so that a first semisolid blank is formed; (B) after the first semisolid blank is turned, putting the obtained substance into second molten aluminum at a temperature of 650-680 DEG C to stir, so that second semisolid slurry is obtained; and (C) feeding the second semisolid slurry into an injection chamber, so that a product is obtained. Compared with common die casting methods in the prior art, the preparation method of the aluminum alloy disclosed by the invention can obtain fine grain structures without the addition of a grain refiner, and structures of columnar crystals and oversize dendrites in traditional casting are eliminated, so that products are uniform in grain and better in effect, and the moulding temperature of the products is about 100 DEG C lower than the temperature of common die casting materials.

Description

technical field [0001] The invention relates to the field of aluminum alloy manufacturing, in particular to an aluminum alloy and a preparation method thereof. Background technique [0002] Now, many aluminum alloy products adopt the production process of ordinary die-casting or casting, that is, the metal is smelted into a liquid that meets certain requirements and poured into the die-casting mold model. The process of castings (parts or blanks). [0003] However, in this ordinary die-casting method, the material temperature of the general raw materials needs to be very high, which consumes a lot of energy, increases the production cost, and the solidification speed is relatively slow. , and the life-span of the mold is short, not only the aluminum alloy products prepared in this way have bad defects, and the qualified rate is low. Contents of the invention [0004] The object of the present invention is to provide an aluminum alloy and a preparation method thereof, so ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02B22D17/00
Inventor 张卫红莫专
Owner FUJIAN KINRUI HIGH TECH CO LTD
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