Method for preparing alumium-phosphorus alloy

A technology of phosphorus-iron alloy and alloy, which is applied in the field of preparation of aluminum-phosphorus alloy, can solve the problems of high production cost and complex process, and achieve the effect of less addition, simple process and high phosphorus content

Active Publication Date: 2013-06-12
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the production of this phosphorus-silicon alloy requires phosphorus to be introduced into

Method used

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  • Method for preparing alumium-phosphorus alloy

Examples

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Comparison scheme
Effect test

Embodiment 1

[0016] (1) Weigh the raw materials according to the mass percentage of 96.0% industrial pure aluminum and 4.0% ferro-phosphorus alloy. The mass percentage of the chemical composition contained in ferro-phosphorus alloy is: phosphorus 25.0; manganese 1.5; titanium 1.5; silicon 1.0; the rest is iron;

[0017] (2) Melt the industrial pure aluminum to 850°C in the smelting furnace, add the ferro-phosphorus alloy, and stir thoroughly for 5 minutes until the reaction is complete;

[0018] (3) Introduce the melt after the above reaction to figure 1 In the holding furnace 1 of the filtering device shown, the melt is allowed to stand and filter, the AlP particles are blocked by the ceramic filter plate 4 and left in the holding furnace 1, and the aluminum-iron alloy liquid is obtained through the aluminum-iron alloy liquid outlet 6; the holding furnace 1 The melt in the alloy is directly cast to form an aluminum-phosphorus alloy; the aluminum-iron alloy liquid is directly cast to form an al...

Embodiment 2

[0021] (1) Weigh the raw materials according to the mass percentage of 93.0% of industrial pure aluminum and 7.0% of ferro-phosphorus alloy. The mass percentage of chemical composition contained in ferro-phosphorus alloy is: phosphorus 28.0; manganese 1.0; titanium 1.0; silicon 1.0; the rest is iron;

[0022] (2) Melt the industrial pure aluminum to 1000°C in the smelting furnace, add the phosphorus-iron alloy, and stir well for 15 minutes until the reaction is complete;

[0023] (3) Introduce the melt after the above reaction to figure 1 In the holding furnace 1 of the filtering device shown, the melt is allowed to stand and filter, the AlP particles are blocked by the ceramic filter plate 4 and left in the holding furnace 1, the aluminum-iron alloy liquid is obtained from the aluminum-iron alloy liquid outlet 6; the holding furnace 1 The melt in the aluminum alloy is directly casted to form an aluminum-phosphorus alloy; the aluminum-iron alloy liquid is directly casted to form an...

Embodiment 3

[0026] (1) Weigh the raw materials according to the mass percentages of 90.0% industrial pure aluminum and 10.0% ferro-phosphorus alloy. The mass percentages of the chemical components contained in ferro-phosphorus alloy are: phosphorus 30.0; manganese 2.0; titanium 2.0; silicon 1.5; the rest is iron;

[0027] (2) Melt the industrial pure aluminum to 1150℃ in the smelting furnace, add the phosphorus-iron alloy, and fully stir for 30 minutes until the reaction is complete;

[0028] (3) Introduce the melt after the above reaction to figure 1 In the holding furnace 1 of the filtering device shown, the melt is allowed to stand and filter, the AlP particles are blocked by the ceramic filter plate 4 and left in the holding furnace 1. The aluminum-iron alloy liquid is obtained from the aluminum-iron alloy liquid outlet 6; the holding furnace 1 The melt is directly cast to form an aluminum-phosphorus alloy; the aluminum-iron alloy liquid is directly cast to form an aluminum-iron alloy by-p...

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Abstract

The invention belongs to the metal material field and relates to a method for preparing an alumium-phosphorus alloy, wherein the method is used for refining primary silicon in an alumium-silicon series alloy. The method comprises the following steps of: taking commercial-purity aluminum and a ferrophosphorus alloy as raw materials; firstly, melting the commercial-purity aluminum within the range of 850-1150 DEG C, adding the ferrophosphorus alloy to the melt and stirring till complete reaction, so that iron phosphide in the ferrophosphorus alloy reacts with alumium to form high-melting point AlP particles, wherein iron is dissolved in the alumium melt in atomic state; secondly, introducing the reacted melt to a heat preserving furnace 1 of a filter device, and after standing and filtering of the melt, performing casting molding of the melt at the upper part of a filter plate 4 to obtain the alumium-phosphorus alloy, and taking the melt at the lower part as alumium-iron alloy by-product. The prepared alumium-phosphorus alloy has an excellent refining effect. The process method provided by the invention employs conventional smelting equipment, and is low in cost, simple and convenient for operation and suitable for large-scale production.

Description

Technical field [0001] The invention belongs to the field of metal materials, and particularly relates to a preparation method of an aluminum-phosphorus alloy used for refining primary silicon in eutectic and hypereutectic aluminum-silicon alloys. Background technique [0002] Eutectic and hypereutectic aluminum-silicon alloys need to refine the primary silicon before use. At present, the industry generally achieves the refinement of primary crystal silicon by adding phosphorus to the aluminum melt (also known as modification treatment). The main phosphorus-containing modifiers used are: red phosphorus, copper-phosphorus, aluminum-phosphorus and Silicon-phosphorus alloy, etc. Red phosphorus has a low ignition point (240℃), and it will generate a large amount of toxic P when added to the melt 2 O 5 Gas seriously pollutes the environment. The copper-phosphorus alloy has a relatively high density, and is easy to precipitate and segregate in a static furnace, and the modification e...

Claims

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Application Information

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IPC IPC(8): C22C1/03C22C21/00
Inventor 刘相法高通孙谦谦
Owner SHANDONG UNIV
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