A kind of preparation method of aluminum-titanium-boron alloy rod

A technology of aluminum-titanium-boron and alloy rods, which is applied in the field of preparation of aluminum-titanium-boron alloy rods, can solve the problem of inconvenient use of powdery refiners, the inability to meet the semi-continuous casting and continuous casting and rolling production of pure aluminum and aluminum alloys, and no Involving aluminum-titanium-boron alloy rods and other issues, to achieve the effect of small size, fine grain structure, and avoid trachoma

Active Publication Date: 2017-05-10
GUANGDONG INST OF NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Although the above-mentioned patents all involve the preparation of refiner alloy powder by atomization method, none of them involve the preparation of aluminum-titanium-boron alloy rods, and the use of powdered refiner is very inconvenient and cannot meet the semi-continuous requirements of pure aluminum and aluminum alloys. The needs of casting and continuous casting and rolling production

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  • A kind of preparation method of aluminum-titanium-boron alloy rod

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Embodiment 1

[0035] The aluminum-titanium-boron alloy rod with 5% Ti element content and 1% B element content is prepared by adopting the present invention. The main equipment is an intermediate frequency induction melting furnace, an atomizing powder mill, a vibration screening machine, a cold isostatic press and a horizontal type Extruder, the preparation method is as follows:

[0036] Step 1: Heat and melt the aluminum ingot in an intermediate frequency induction furnace and increase the temperature to 875°C, then add 25% potassium fluorotitanate and 11.5% potassium fluoroborate to the aluminum ingot. After stirring for 80 minutes, remove the surface of the alloy liquid Dross to obtain aluminum titanium boron alloy liquid;

[0037] The second step: transfer the aluminum-titanium-boron alloy liquid to the atomizing powder mill, and atomize the aluminum-titanium-boron alloy liquid into powder under the protection of nitrogen, the atomization temperature is 810℃, and the atomization nitrogen pr...

Embodiment 2

[0051] The aluminum-titanium-boron alloy rod with a Ti element content of 4.5% and a B element content of 0.8% is prepared by adopting the present invention. The main equipment is an intermediate frequency induction melting furnace, an atomizing powder mill, a vibration screening machine, a cold isostatic press and a horizontal type Extruder, the preparation method is as follows:

[0052] Step 1: Heat and melt the aluminum ingot in an intermediate frequency induction furnace and increase the temperature to 850℃, then add 22.5% potassium fluorotitanate and 9.2% potassium fluoroborate, stirring for 60 minutes, remove the surface of the alloy liquid Dross to obtain aluminum titanium boron alloy liquid;

[0053] Step 2: Transfer the aluminum-titanium-boron alloy liquid to the atomizing powder mill, and atomize the aluminum-titanium-boron alloy liquid into powder under the protection of nitrogen, the atomization temperature is 800℃, and the atomization nitrogen pressure is 2MPa;

[0054]...

Embodiment 3

[0060] The aluminum-titanium-boron alloy rod with a Ti element content of 5.5% and a B element content of 1.2% is prepared by adopting the present invention. The main equipment is an intermediate frequency induction melting furnace, an atomizing powder mill, a vibration screening machine, a cold isostatic press and a horizontal type Extruder, the preparation method is as follows:

[0061] The first step: heat and melt the aluminum ingot in an intermediate frequency induction furnace and raise the temperature to 900℃, then add 27.5% potassium fluorotitanate and 13.7% potassium fluoroborate, stirring for 90 minutes, remove the surface of the alloy liquid Dross to obtain aluminum titanium boron alloy liquid;

[0062] The second step: transfer the aluminum-titanium-boron alloy liquid to the atomizing powder mill, and atomize the aluminum-titanium-boron alloy liquid into powder under the protection of nitrogen, the atomization temperature is 820℃, and the pressure of the atomized nitrog...

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Abstract

The invention discloses a manufacturing method of an aluminum, titanium and boron alloy rod and belongs to the field of refiner material manufacturing. The method is characterized in that the aluminum, titanium and boron alloy rod is formed by aluminum, titanium and boron alloy powder in an extrusion mode. The method includes the following steps that aluminum, titanium and boron alloy liquid is prepared and atomized into powder, the aluminum, titanium and boron alloy powder is screened, cold isostatic pressing is performed on the aluminum, titanium and boron alloy powder so that preformed blanks can be formed, vacuum degasing and heating are performed on the preformed blanks, and the preformed blanks are extruded to form the aluminum, titanium and boron alloy rod. According to the method, the aluminum, titanium and boron alloy rod is manufactured in a powder hot extrusion method, and the problems that the TiAl3 phase size of a traditional continuous casting aluminum, titanium and boron alloy rod is large and TiB2 particles aggregate are solved. The TiAl3 phase size of the aluminum, titanium and boron alloy rod manufactured with the method is small and TiB2 particles are evenly distributed, and higher grain refinement capacity is achieved.

Description

Technical field [0001] The invention belongs to the field of preparation of refiner materials, and specifically relates to a preparation method of an aluminum titanium boron alloy rod. Background technique [0002] Aluminum titanium boron alloy rod is an indispensable refiner in the production of pure aluminum and aluminum alloy semi-continuous casting and continuous casting and rolling. The method of use is to continuously add the aluminum titanium boron alloy rod to pure aluminum and aluminum alloy through an automatic rod feeding machine In the launders of semi-continuous casting and continuous casting, refine the crystal grains of pure aluminum and aluminum alloy semi-continuous ingots and continuous cast-rolled slabs, and improve the shaping and processing performance of ingots and slabs. [0003] The existing aluminum-titanium-boron alloy rods are mainly produced by continuous casting and rolling technology, that is, the aluminum-titanium-boron alloy liquid is directly contin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/20B22F9/08
Inventor 郑开宏王顺成宋东福农登甘春雷
Owner GUANGDONG INST OF NEW MATERIALS
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