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Anti-degradation aluminum-silicon alloy refiner, as well as preparation method and application thereof

A refiner, aluminum-silicon system technology, applied in the field of alloy refiner, can solve problems such as degradation

Inactive Publication Date: 2018-11-06
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has been found through practice that these refiners all have serious degradation after being in the melt for more than 1 hour

Method used

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  • Anti-degradation aluminum-silicon alloy refiner, as well as preparation method and application thereof
  • Anti-degradation aluminum-silicon alloy refiner, as well as preparation method and application thereof
  • Anti-degradation aluminum-silicon alloy refiner, as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0163] (1) An Al-V-B refiner for aluminum-silicon alloy, prepared from 99.99% industrial pure aluminum, 99.9% industrial pure vanadium and 99.9% industrial pure boron, wherein the weight of pure vanadium The percentage is 2%, the percentage by weight of pure boron is 2%, and the balance is industrial pure aluminum. First, calculate and weigh the raw materials according to the weight percentages of aluminum, vanadium and boron described in the aluminum-silicon alloy refiner. Next, the prepared aluminum, vanadium and boron are evenly mixed, and then the evenly mixed raw materials are wrapped in aluminum foil. Then the mixed and packaged raw materials are placed in the crucible of the arc melting furnace, and melted under vacuum conditions at a melting temperature of 1800°C. The sample was repeatedly smelted 3 times, and the smelting time was 5 minutes each time. After the melted Al-2%V-2%B alloy is cooled, it is taken out and put into a corundum crucible, and the corundum cruc...

Embodiment 2

[0167] (1) Ingredients

[0168] The raw materials are industrial pure aluminum, industrial pure vanadium and industrial pure boron. According to the mass percentages of aluminum, vanadium and boron described in the aluminum-silicon alloy refiner, the raw materials are calculated and weighed, wherein aluminum is 20%, vanadium is 40%, Boron 40%;

[0169] (2) Melting

[0170] The aluminum, vanadium and boron prepared in step (1) are uniformly mixed, and then the uniformly mixed raw materials are wrapped in aluminum foil. Then put the packaged raw materials in the crucible of the electric arc melting furnace, and melt them under vacuum conditions at a melting temperature of 1800°C. The sample was repeatedly smelted 3 times, and the smelting time was 5 minutes each time. Then cool down with the furnace.

[0171] (3) Solidification

[0172] After the master alloy obtained in the step (2) is cooled to room temperature, the oxide skin on the surface is removed, and an anti-degene...

Embodiment 3

[0177] (1) Ingredients

[0178] The raw materials are industrial pure aluminum, industrial pure vanadium and industrial pure boron. According to the mass percentages of aluminum, vanadium and boron described in the aluminum-silicon alloy refiner, the raw materials are calculated and weighed, wherein aluminum is 99.8%, vanadium is 0.1%, Boron 0.1%;

[0179] (2) Melting

[0180] The aluminum, vanadium and boron prepared in step (1) are uniformly mixed, and then the uniformly mixed raw materials are wrapped in aluminum foil. Then put the packaged raw materials in the crucible of the electric arc melting furnace, and melt them under vacuum conditions at a melting temperature of 1500°C. The sample was repeatedly smelted 3 times, and the smelting time was 5 minutes each time. Then cool down with the furnace.

[0181] (3) Solidification

[0182] After the master alloy obtained in the step (2) is cooled to room temperature, the oxide skin on the surface is removed, and an anti-de...

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Abstract

The invention discloses an anti-degradation aluminum-silicon alloy refiner, as well as a preparation method and application of the aluminum-silicon alloy refiner. The refiner is an intermediate alloyprepared from three elements in percentage by mass: 20 to 99.8 percent of aluminum, 0.1 to 40 percent of vanadium and 0.1 to 40 percent of boron. The preparation method comprises the step of smeltingand solidifying two or three components from the aluminum, the vanadium, the boron, an aluminum-vanadium alloy, boron salt and vanadium salt, and obtaining the anti-degradation aluminum-silicon alloyrefiner. The aluminum-silicon alloy refiner prepared through the invention cannot be degraded within three hours, so that the degradation time is remarkably postponed; the aluminum-silicon alloy refiner can be applied industrially, has important theoretical significances and practical application values, and is particularly applicable to an aluminum-silicon alloy with the silicon content being larger than 4 percent by weight of Si. According to the preparation method of the aluminum-silicon alloy refiner, the process is simple, and the raw materials are easy to get. The aluminum-silicon alloyrefiner prepared through the invention has a favorable refining effect.

Description

technical field [0001] The invention discloses an anti-degeneration aluminum-silicon alloy refiner, a preparation method and application thereof, and belongs to the technical field of alloy refiners. Background technique [0002] Grain refinement is currently the only strengthening method that can guarantee an increase in strength without reducing plastic properties. Since the preparation of almost all metals undergoes at least one solidification process, and the solidification process, as the front-end process of metal processing, plays a very important role in the structure and properties of metals. After research, it is found that solidification fine grain can not only improve the mechanical properties, but also reduce solidification defects. Therefore, it is of great practical significance to achieve grain refinement during the solidification of metals. Adding a refiner to molten metal has been extensively researched and paid attention to because of its simple operatio...

Claims

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Application Information

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IPC IPC(8): C22C1/06C22C1/03C22C21/02
CPCC22C1/02C22C1/026C22C1/03C22C1/06C22C21/00C22C21/02C22C30/00
Inventor 张云虎叶春洋王鼎璞申延平宋长江郑红星翟启杰
Owner SHANGHAI UNIV
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