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Preparation method of aluminum-silicon alloy

A technology of aluminum-silicon alloy and aluminum liquid, which is applied in the field of metal smelting technology, can solve the problems of easy growth, uneven distribution of silicon, long melting time, etc.

Inactive Publication Date: 2014-05-07
CITIC DICASTAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the aluminum liquid produced in this way, the temperature of the aluminum liquid is higher than 850°C, and the melting time is long. After the silicon is dissolved in the aluminum liquid, it is easy to grow up, resulting in a coarse silicon phase; because the stirring is not sufficiently uniform, the distribution of silicon dissolved in the aluminum liquid Uneven, easy to cause local silicon segregation

Method used

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  • Preparation method of aluminum-silicon alloy
  • Preparation method of aluminum-silicon alloy
  • Preparation method of aluminum-silicon alloy

Examples

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Effect test

Embodiment 1

[0014] Example 1: Heat bulk silicon to 1330°C to melt it into silicon liquid, control the temperature of aluminum liquid at 769°C, and mix silicon liquid and aluminum liquid under a protective atmosphere of high-purity nitrogen.

Embodiment 2

[0015] Example 2: Heat bulk silicon to 1360°C to melt it into silicon liquid, control the temperature of aluminum liquid at 767°C, and mix silicon liquid and aluminum liquid under a protective atmosphere of high-purity argon.

Embodiment 3

[0016] Example 3: Heat bulk silicon to 1390°C to melt it into silicon liquid, control the temperature of aluminum liquid at 765°C, and mix silicon liquid and aluminum liquid under a protective atmosphere of high-purity nitrogen.

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Abstract

The invention discloses a preparation method of an aluminum-silicon alloy. The preparation method comprises the steps: heating blocky silicon to 1300-1400 DEG C to ensure that the blocky silicon is melted to molten silicon, controlling the temperature of the molten silicon to 760-770 DEG C, and mixing the molten silicon with molten aluminum under a high-purity nitrogen or argon protection atmosphere to prepare molten aluminum-silicon alloy. The prepared molten aluminum-silicon alloy is thin and uniform in silicon phase and uniform in distribution. Silicon is remarkably refined, and crystalline grains are smaller.

Description

technical field [0001] The invention relates to a metal smelting process, in particular to a method for preparing an aluminum-silicon alloy. Background technique [0002] In the traditional aluminum-silicon alloy production, block silicon is usually placed at the bottom of the furnace, and aluminum ingots are piled on top of it, then heated and melted, and stirred to fully dissolve the silicon into the molten aluminum to achieve the required composition. For the aluminum liquid produced in this way, the temperature of the aluminum liquid is high, greater than 850 ° C, and the melting time is long. After the silicon is dissolved in the aluminum liquid, it is easy to grow up, resulting in a coarse silicon phase; because the stirring is not sufficient and uniform, the silicon dissolved in the aluminum liquid is distributed. Uneven, easy to cause local silicon segregation. Contents of the invention [0003] The object of the present invention is to provide an aluminum-silicon...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C21/02
Inventor 吴群虎白帮伟王立生秦鹏阿拉腾王永宁朱志华李昌海其他发明人请求不公开姓名
Owner CITIC DICASTAL
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