Preparation method of aluminum-phosphorus alloy for hypereutectic aluminum-silicon modification

An aluminum-phosphorus alloy and hypereutectic technology, which is applied in the field of preparation of aluminum-phosphorus alloys for hypereutectic aluminum-silicon modification, can solve the problem of no preparation method and the like, and achieve the effects of good refining effect, simple operation and easy realization.

Active Publication Date: 2019-01-29
LIAONING UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these phosphorus-containing master alloys are easy to prepare, for hypereutectic aluminum-silicon alloys with limited Cu, Ni, Zr and other elements, these phosphorus-containing master alloys cannot be used for modification.
Therefore, seeking a high-efficiency and clean master alloy is already a future development trend and market demand. People have been looking forward to the appearance of aluminum-phosphorus alloys, but so far there is still no preparation method

Method used

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  • Preparation method of aluminum-phosphorus alloy for hypereutectic aluminum-silicon modification
  • Preparation method of aluminum-phosphorus alloy for hypereutectic aluminum-silicon modification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Melt 198.5g of industrial pure aluminum and adjust the temperature of molten aluminum to 1400°C;

[0021] (2) Wrap 12g of aluminum phosphide particles with 1.5g of aluminum foil and press them into molten aluminum. 3.03% of mass;

[0022] (3) After the aluminum phosphide is dissolved in the molten aluminum, keep it warm for 2 minutes, and pour the aluminum-phosphorus alloy liquid into the metal tank made of steel plate.

[0023] According to the above operations, an aluminum-phosphorus alloy with a phosphorus content of 3.03% can be obtained.

Embodiment 2

[0025] (1) Melt 198g of industrial pure aluminum and adjust the temperature of the molten aluminum to 1800°C;

[0026] (2) 24g of aluminum phosphide particles are wrapped together with 2g of aluminum foil, pressed into molten aluminum with a quartz tube, and the content of phosphorus accounts for 5.73% of the total mass of the molten aluminum;

[0027] (3) After the aluminum phosphide is dissolved in the molten aluminum, keep it warm for 6 minutes, and pour the aluminum-phosphorus alloy liquid into the metal tank made of steel plate.

[0028] According to the above operations, an aluminum-phosphorus alloy with a phosphorus content of 5.73% can be obtained.

Embodiment 3

[0030] (1) Melt 200g of industrial pure aluminum and adjust the temperature of the molten aluminum to 1400°C;

[0031] (2) 4g of aluminum phosphide particles to be added are wrapped together with aluminum foil, and pressed into molten aluminum with a quartz tube, and the content of phosphorus accounts for 1.05% of the total mass of the molten aluminum;

[0032] (3) After the aluminum phosphide is dissolved in the molten aluminum, keep it warm for 2 minutes, and pour the aluminum-phosphorus alloy liquid into the metal tank made of steel plate.

[0033] According to the above operations, an aluminum-phosphorus alloy with a phosphorus content of 1.05% can be obtained.

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Abstract

The invention discloses a preparation method of an aluminum-phosphorus alloy for hypereutectic aluminum-silicon modification. The preparation method comprises the following steps that (1) the industrial pure aluminum is molten, and the temperature of the molten aluminum is adjusted to 1400 DEG C to 2000 DEG C; (2) the aluminum phosphide particles are pressed into molten aluminum, and the content of phosphorus in the aluminum phosphide accounts for 1-10% of the total mass of the molten aluminum; (3) aluminum phosphide is pressed into molten aluminum, and preserving heat for 2-10 minutes, the phosphorus-containing aluminum melt is obtained; and the phosphorus-containing aluminum melt is poured into a metal groove made by the steel plate to prepare the aluminum-phosphorus alloy sheet. The preparation method has the advantages of being simple in process and easy to operate, and can be used as the hypereutectic aluminum-silicon alloy to refine the primary modifier, the primary crystal silicon refining effect is good, and pollution to the environment is avoided.

Description

technical field [0001] The invention belongs to a preparation method of an intermediate alloy, in particular to a preparation method of an aluminum-phosphorus alloy for hypereutectic aluminum-silicon modification. Background technique [0002] Hypereutectic aluminum-silicon alloy has the characteristics of low density, high hardness, wear resistance, high temperature resistance, and low thermal expansion coefficient. It is most suitable for manufacturing high-performance automotive engine cylinders, pistons and other parts. However, the coarse primary silicon in the tissue leads to almost zero elongation, which cannot meet the requirements of the parts. For this reason, people try to change the shape of primary silicon while refining primary silicon to improve its toughness, thus developing new technologies such as metamorphic treatment. Among many modification methods, phosphorus modification treatment is the most effective and stable method for refining primary silicon. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/04C22C1/03C22C1/02C22C21/00
CPCC22C1/026C22C1/03C22C21/00C22C21/04
Inventor 李青春陈淑英岳旭东常国威
Owner LIAONING UNIVERSITY OF TECHNOLOGY
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