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Preparation method of high-quality aluminum-titanium-boron alloy rods

A technology of aluminum-titanium-boron and alloy rods, which is applied in the field of preparation of high-quality aluminum-titanium-boron alloy rods, can solve problems such as poor refinement ability of aluminum alloys, aggregation of particles, and coarse particles, so as to achieve uniform distribution, grain refinement, small particle effect

Active Publication Date: 2018-04-10
河北晶宝新金属有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention proposes a method for preparing a high-quality aluminum-titanium-boron alloy rod, which solves the problem of continuous casting and rolling aluminum-titanium-boron alloy rod TiAl in the prior art. 3 Coarse particles, TiB 2 Particle aggregation and slag inclusions are serious, and the technical problems of poor refining ability in aluminum alloys

Method used

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  • Preparation method of high-quality aluminum-titanium-boron alloy rods
  • Preparation method of high-quality aluminum-titanium-boron alloy rods
  • Preparation method of high-quality aluminum-titanium-boron alloy rods

Examples

Experimental program
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Effect test

Embodiment 1

[0036] (1) Batching and mixing: Weigh 120 parts of potassium fluoroborate, 250 parts of potassium fluorotitanate and 8 parts of diffusing agent according to parts by weight, and add the three into a mixer and mix for 30 minutes to make a fluoride salt mixture;

[0037] (2) The first step of alloying: Weigh the aluminum ingot according to the weight, put the aluminum ingot into the frequency conversion induction furnace and heat it to 700°C, add 8 parts of refining agent to the aluminum liquid to refine the aluminum liquid, turn on the mechanical mixer and A frequency conversion induction furnace uses a feeder to uniformly add 42% fluorine salt mixture to the aluminum liquid of the frequency conversion induction furnace, and after stirring for 60 minutes, an aluminum titanium boron alloy liquid is obtained;

[0038] (3) The second step of alloying: turn on the frequency conversion induction furnace and make it in the stirring frequency band (positive and square frequency bands: ...

Embodiment 2

[0043] (1) Batching and mixing: Weigh 140 parts of potassium fluoroborate, 280 parts of potassium fluorotitanate and 13 parts of diffusing agent according to parts by weight, and add the three into a mixer and mix for 30 minutes to make a fluoride salt mixture;

[0044] (2) The first step of alloying: Weigh the aluminum ingot according to the weight, put the aluminum ingot into the frequency conversion induction furnace and heat it to 780°C, add 12 parts of refining agent to the aluminum liquid to refine the aluminum liquid, turn on the mechanical mixer and A frequency conversion induction furnace uses a feeder to uniformly add 56% fluorine salt mixture to the aluminum liquid of the frequency conversion induction furnace, and after stirring for 90 minutes, an aluminum titanium boron alloy liquid is obtained;

[0045] (3) The second step of alloying: turn on the frequency conversion induction furnace and make it in the stirring frequency band (positive and square frequency bands...

Embodiment 3

[0050] (1) Batching and mixing: Weigh 130 parts of potassium fluoroborate, 265 parts of potassium fluorotitanate and 10 parts of diffusing agent according to parts by weight, add the three into the mixer and mix for 30 minutes to make a fluoride salt mixture;

[0051] (2) The first step of alloying: Weigh the aluminum ingot according to the weight, put the aluminum ingot into the frequency conversion induction furnace and heat it to 745°C, add 10 parts of refining agent to the aluminum liquid to refine the aluminum liquid, turn on the mechanical mixer and A frequency conversion induction furnace uses a feeder to uniformly add 50% fluorine salt mixture to the aluminum liquid of the frequency conversion induction furnace, and after stirring for 75 minutes, an aluminum titanium boron alloy liquid is obtained;

[0052] (3) The second step of alloying: turn on the frequency conversion induction furnace and make it in the stirring frequency band (positive and square frequency bands: ...

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Abstract

The invention provides a preparation method of high-quality aluminum-titanium-boron alloy rods and belongs to preparation of refiners. The method is characterized by producing aluminum-titanium-boronalloys through cooperation of a frequency-variable induction electric furnace and a medium-frequency induction electric furnace, refining aluminum liquid before charging, adding a mixture of villiaumite and a diffusion agent, taking the mixture as a nucleating agent of TiAl3 and TiB2 mass points in the alloying process, wherein the TiAl3 and TiB2 mass points formed after completing alloying are fine and are more uniformly distributed; the formation of rod shape of the TiAl3 mass points and the aggregation of the TiB2 mass points are eliminated; the diffusion agent is added into the villiaumitemixture, so that the aggregation of the TiAl3 and TiB2 mass points is effectively controlled; the alloying process is equipped with mechanical stirring, so that the enlargement of the TiAl3 and TiB2mass points is effectively prevented; the separation and purification effect of villiaumite slag and alloys can be improved; through check analysis, the TiAl3 and TiB2 mass points in the produced products are fine, are uniform and dispersive in distribution and are extremely low in slag content; the problems that the TiAl3 mass points in the continuously cast and rolled aluminum-titanium-boron alloy rods in the current market are thick and big, the TiB2 mass points are aggregated, the content of the slag in the alloys is high, and the aluminum-titanium-boron alloy rods are poor in refining capacity in the aluminum alloys are effectively solved.

Description

technical field [0001] The invention belongs to the technical field of preparation of aluminum-titanium-boron alloy rods, and relates to a preparation method of high-quality aluminum-titanium-boron alloy rods. Background technique [0002] Aluminum and aluminum alloy refinement treatment can reduce alloy segregation and improve alloy mechanical properties. Since the Swedes proposed to use the feeder to continuously add the filamentous refiner to the launder of the melt outside the furnace in 1969, the online addition of the grain refiner has been widely used. Al-Ti-B alloy rod is currently the most widely used grain refiner in the aluminum industry in the world. However, the continuous casting and rolling aluminum-titanium-boron alloy rod TiAl is currently on the market. 3 Coarse particles, TiB 2 Particle aggregation and slag inclusion are serious, and the refining ability in aluminum alloy is poor. Contents of the invention [0003] The invention proposes a method for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/02C22C1/06
CPCC22C1/026C22C1/06C22C21/003
Inventor 郭成海范铁林王全龙陈致宝
Owner 河北晶宝新金属有限公司
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