Aluminum-titanium-boron alloy and preparation method thereof

A technology of aluminum-titanium-boron and alloy, which is applied in the field of aluminum-titanium-boron alloy and its preparation, can solve the problems of difficult control of reaction temperature, reduction of the amount of particle raw materials added, and high price of raw materials, so as to reduce processing energy consumption and production cost, Avoid intermediate recycling process, the effect of quality improvement

Inactive Publication Date: 2019-08-30
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the fluoride salt reaction method, both titanium and boron come from fluorine-containing compounds, so a large amount of fluorine-containing compounds are used as raw materials, resulting in the release of a large amount of fluoride fumes during the preparation process, which pollutes the environment and has a certain impact on health. ; In addition, the generated fluoride has a certain corrosion on the furnace lining, and is mixed in the aluminum-titanium-boron alloy, which deteriorates the performance of the alloy
The melt element mixing method is to prepare aluminum-titanium-boron alloy by reacting sponge titanium, alkali metal of boron and aluminum melt. This method can reduce the amount of particle raw materials added, reduce the volatilization of fluorine salt and the decrease of melt temperature. However, there are more borides in the prepared alloy, and the effective particle TiB 2 Less, unsatisfactory refinement effect and high cost
The self-propagating high-temperature synthesis method is to add aluminum, titanium, and boron elemental powder compacts to the aluminum melt to obtain an aluminum-titanium-boron alloy. The alloy obtained by this method has high purity, but the reaction temperature is not easy to control, and the price of raw materials Expensive, not easy to use in actual production

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  • Aluminum-titanium-boron alloy and preparation method thereof
  • Aluminum-titanium-boron alloy and preparation method thereof
  • Aluminum-titanium-boron alloy and preparation method thereof

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preparation example Construction

[0025] The preparation method of the aluminum-titanium-boron alloy provided by the present invention, compared with the preparation of the aluminum-titanium-boron alloy by the fluorine salt method of potassium fluoroborate and potassium fluorotitanate, can greatly reduce the addition of fluorine salt by using titanium chips instead of potassium fluorotitanate The amount of fluoride in the preparation process is significantly reduced, reducing pollution, and the obtained alloy is relatively pure, and the quality is relatively improved; The advantage of reducing the amount of fluorine salt particles added is that the prepared Al-Ti-B alloy is relatively pure; compared with the Al-Ti-B alloy prepared by self-propagating high-temperature synthesis method, the preparation process is simple, the source of raw materials is wide and the price is cheap.

[0026] Therefore, in the present invention, by melting the titanium chips together with the mixture of potassium fluoroborate and sod...

Embodiment 1

[0044] This embodiment is a method for preparing an aluminum-titanium-boron alloy. The method is to prepare an Al-5%Ti-1%B alloy by using a mixture of aluminum, titanium chips, potassium fluoroborate and sodium fluoride. The specific steps are as follows:

[0045] Firstly, the titanium chips produced by machining (pure titanium chips containing only titanium elements) are crushed on a crusher, and after the titanium chips are crushed into a flake structure with a maximum size of less than 5mm, the dirt on the surface of the titanium chips is removed with an organic solvent-ethanol. Remove, weigh 6kg of titanium scraps after drying and pack the titanium scraps into bags with 0.1mm thick aluminum foil, each bag contains 0.5kg of titanium scraps;

[0046] Weigh 12kg of potassium fluoroborate and 0.12kg of sodium fluoride, dry them at 80°C for 30 minutes, mix them evenly, and pack them into bags with 0.1mm thick aluminum foil, 0.505kg per bag;

[0047] After melting 100kg of pure ...

Embodiment 2

[0055] The present embodiment is a method for preparing an aluminum-titanium-boron alloy. The method is to prepare an Al-3%Ti-1%B alloy by using a mixture of aluminum, titanium chips, potassium fluoroborate and sodium fluoride. The specific steps are as follows:

[0056] Firstly, the titanium chips produced by machining (pure titanium chips containing only titanium elements) are crushed on a crusher, and after the titanium chips are crushed into a flake structure with a maximum size of less than 5mm, the dirt on the surface of the titanium chips is removed with an organic solvent-ethanol. Remove, weigh 4kg of titanium scraps after drying and pack them into bags with 0.05mm thick aluminum foil, each bag contains 0.4kg of titanium scraps;

[0057] Weigh 14kg of potassium fluoroborate and 0.14kg of sodium fluoride, dry them at 80°C for 30 minutes, mix them evenly, and pack them into bags with 0.05mm aluminum foil, 0.505kg per bag;

[0058] After melting 100kg of pure aluminum in ...

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Abstract

The invention provides an aluminum titanic boron alloy and a preparation method thereof, and belongs to the field of alloy manufacturing. The preparation method of the aluminum titanic boron alloy comprises the steps that titanium scrap bagged through aluminum foil and a mixture of potassium fluoborate and sodium fluoride bagged through aluminum foil are melted in molten aluminum; and then castingis performed to obtain the aluminum titanic boron alloy. By adopting the preparation method, the titanium scrap can be effectively utilized, the problems that in the prior art, production of the aluminum titanic boron alloy pollutes the environment, the cost is high, and alloy segregation occurs can be relieved, and the effects that environment pollution is reduced, the cost is lowered, and the quality of the aluminum titanic boron alloy is improved are achieved.

Description

technical field [0001] The invention relates to the technical field of alloy manufacturing, in particular to an aluminum-titanium-boron alloy and a preparation method thereof. Background technique [0002] Titanium and its alloys are widely used in the fields of aviation, aerospace, ships, automobiles, chemicals, and medicine due to their excellent characteristics such as low density, high specific strength, strong corrosion resistance, and non-toxic and harmless. Due to the unique processing characteristics of titanium products, the finished product rate is generally about 50% in the production and processing process, and a large amount of titanium shavings will be generated during mechanical processing, so it is necessary to recycle titanium shavings. At present, the recycling of titanium scrap generally adopts special titanium scrap recycling equipment or recovers titanium scrap based on existing equipment. The former has high equipment cost and low utilization rate; the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C1/06
Inventor 胡茂良刘怡乐许红雨王晔吉泽升
Owner HARBIN UNIV OF SCI & TECH
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