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Preparation method of aluminum-titanium-boracium mater alloy

An intermediate alloy, aluminum titanium boron technology, applied in the field of metallurgy, can solve the problems of low production efficiency, high reaction temperature, not very ideal, etc., and achieve the effect of good product quality, simple operation and stable reaction

Inactive Publication Date: 2015-04-01
SHENZHEN YUANSIDACHENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore obviously the energy consumption of this method is high, and production efficiency is low
On this basis, someone (such as patent 93112079.9) replaces B with alkali metal fluoride salt and pure titanium particles 2 o 3 and TiO 2 , but the cost of pure titanium is relatively high, which is not ideal
The high-temperature self-propagating method is to mix Al, Ti powder and B powder at high temperature to directly react to synthesize the master alloy, which not only has high reaction temperature but also high cost

Method used

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  • Preparation method of aluminum-titanium-boracium mater alloy
  • Preparation method of aluminum-titanium-boracium mater alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Weigh raw materials: Al powder is industrial grade, sulfate is anhydrous calcium sulfate (CaSO 4 ), sulfate can not only provide heat, but also has a slagging effect, TiO 2 and B powder are analytically pure, and the slagging agent is selected as CaF 2 ; Raw material mass percentage is as follows:

[0025] Al CaSO 4 TiO 2 B CaF 2 60 30 5.5 0.5 4

[0026] 2. Mixing: Put the raw materials into the mixer and mix evenly, the number of times is 3 times;

[0027] 3. Loading: put the mixed raw materials into the mold cavity, and slightly compact the raw materials;

[0028] 4. Ignition: Sprinkle the igniting agent on the raw material and ignite it with a torch;

[0029] 5. Cooling: After the metal flowing into the forming mold from the reaction mold is cooled naturally, the Al-Ti-B alloy is taken out.

Embodiment 2

[0031] 1. Weigh raw materials: Al powder is industrial grade, sulfate is anhydrous calcium sulfate (CaSO 4 ), sulfate can not only provide heat, but also has a slagging effect, TiO 2 and B powder are analytically pure, and the slagging agent is selected as CaF 2 ; Raw material mass percentage is as follows:

[0032] Al CaSO 4 TiO 2 B CaF 2 50 35 8 2 5

[0033] 2. Mixing: Put the raw materials into the mixer and mix evenly, the number of times is 3 times;

[0034] 3. Loading: put the mixed raw materials into the cavity of the mold, and slightly compact the raw materials;

[0035] 4. Ignition: Sprinkle the igniting agent on the raw material and ignite it with a torch;

[0036] 5. Cooling: After the metal flowing into the forming mold from the reaction mold is cooled naturally, the Al-Ti-B alloy is taken out.

Embodiment 3

[0038] 1. Weigh raw materials: Al powder is industrial grade, sulfate is anhydrous calcium sulfate (CaSO 4 ), sulfate can not only provide heat, but also has a slagging effect, TiO 2 and B powder are analytically pure, and the slagging agent is selected as CaF 2 ; Raw material mass percentage is as follows:

[0039] Al CaSO 4 TiO 2 B CaF 2 70 25.8 1 0.2 3

[0040] 2. Mixing: Put the raw materials into the mixer and mix evenly, the number of times is 3 times;

[0041] 3. Loading: put the mixed raw materials into the cavity of the mold, and slightly compact the raw materials;

[0042] 4. Ignition: Sprinkle the igniting agent on the raw material and ignite it with a torch;

[0043] 5. Cooling: After the metal flowing into the forming mold from the reaction mold is cooled naturally, the Al-Ti-B alloy is taken out.

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Abstract

The invention discloses a preparation method of aluminum-titanium-boracium mater alloy. The aluminum-titanium-boracium mater alloy is prepared from the following raw materials in mass ratio: 50-70 percent of Al, 25-40 percent of CaSO425, 1-9 percent of TiO2, 0.2-4 percent of B and 3-5 percent of CaF2. The method comprises the following steps that the raw materials are uniformly stirred; the uniformly mixed materials are placed into a reaction cavity of graphite, an igniter is spread into the reaction cavity, and the materials are compacted and ignited; and liquid metal flows into a forming model from a small hole below the reaction cavity at a high temperature to prepare the aluminum-titanium-boracium mater alloy. According to the preparation method disclosed by the invention, thermit reaction of aluminum and calcium sulfate and thermit reaction of the aluminum and titanium oxide are applied, and Ti which is a product of the thermit reactions and redundant Al powder and B powder in the raw materials form the aluminum-titanium-boracium mater alloy; and as large equipment (such as electrolyzers and smelting furnaces), the external energy and the like are not needed, the production cost is greatly lowered, the technological time is shortened, and an aluminum-titanium-boracium mater alloy refiner with high quality is obtained.

Description

technical field [0001] The invention relates to a preparation method of an aluminum-titanium-boron master alloy, belonging to the technical field of metallurgy. Background technique [0002] Due to its excellent performance, aluminum alloys are widely used in various fields in actual production and life. Aluminum alloys can be divided into cast aluminum alloys and wrought aluminum alloys, and wrought aluminum alloys can be divided into heat-treated and non-heat-treated wrought aluminum alloys. In order to obtain excellent comprehensive mechanical properties of cast aluminum alloy and non-heat-treated strengthened deformed aluminum alloy, it is necessary to obtain a fine and uniform equiaxed grain structure. There are three main methods of grain refinement for aluminum alloys: (1) controlling the cooling rate of metal solidification; (2) mechanical physical refinement; (3) chemical refinement, that is, adding a grain refiner. By far the most effective and easiest method of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C21/00
Inventor 张国栋胡玉华杨辉张建强
Owner SHENZHEN YUANSIDACHENG TECH
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