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A kind of aluminum titanium boron carbon zirconium rare earth refining agent, its preparation method and application

An aluminum-titanium-boron-carbon and refiner technology, applied in the field of alloys, can solve the problems of uneven structure of aluminum master alloy grain refiner, many inclusions in the alloy, short aging time, etc., to reduce TiB2 aggregation, The effect of low content of impurity elements and long duration of refinement

Active Publication Date: 2018-06-01
NANJING YUNKAI ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the defects of uneven structure, long refining time, short aging time and too many inclusions in the alloy in the prior art, the present invention provides an aluminum titanium boron carbon zirconium rare earth refiner Agents, their preparation methods and their applications

Method used

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  • A kind of aluminum titanium boron carbon zirconium rare earth refining agent, its preparation method and application
  • A kind of aluminum titanium boron carbon zirconium rare earth refining agent, its preparation method and application

Examples

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Embodiment 1

[0032] The manufacture method of aluminum titanium boron carbon zirconium rare earth grain refiner (Al-Ti5-B0.2-C0.1-Zr0.1-Re1) comprises the following steps connected in sequence:

[0033] 1) Mix potassium fluotitanate, potassium fluoborate, potassium fluozirconate, and graphite recarburizer at a speed of 50 rpm for 15 minutes;

[0034] 2) melting the aluminum ingot;

[0035] 3) After the aluminum ingot is completely melted, add the material obtained in step 1) into the molten aluminum for a reaction at a temperature of 800°C, and the reaction time is 25 minutes;

[0036] 4) After the reaction finishes, scoop off the slag;

[0037] 5) Add a solvent of 2% of the mass of the aluminum ingot for stirring and degassing refining, blow the solvent into the alloy liquid with argon to carry out refining and degassing, the refining time is 22 minutes, the argon pressure is 0.2Mpa, the stirring speed is 350rpm, and the stirring time is 22 minutes. The temperature is 820°C, and the sol...

Embodiment 2

[0045] The manufacturing method of the aluminum titanium boron carbon zirconium rare earth grain refiner comprises the following steps connected in sequence:

[0046] 1) Potassium fluotitanate, potassium fluoborate, potassium fluozirconate, and graphite recarburizer were mixed at a speed of 55 rpm for 20 minutes;

[0047] 2) melting the aluminum ingot;

[0048] 3) After the aluminum ingot is completely melted, add the material obtained in step 1) into the molten aluminum for a reaction at a temperature of 850°C, and the reaction time is 30 minutes;

[0049] 4) After the reaction finishes, scoop off the slag;

[0050] 5) Add a solvent of 2% of the mass of the aluminum ingot for stirring and degassing refining, blow the solvent into the alloy liquid with argon to carry out refining and degassing, the refining time is 25 minutes, the argon pressure is 0.3Mpa, the stirring speed is 400rpm, and the stirring time is 25 minutes. The temperature is 850°C, and the solvent is a mixtur...

Embodiment 3

[0058] The manufacturing method of the aluminum titanium boron carbon zirconium rare earth grain refiner comprises the following steps connected in sequence:

[0059] 1) Mix potassium fluotitanate, potassium fluoborate, potassium fluozirconate, and graphite recarburizer at a speed of 50 rpm for 10 minutes;

[0060] 2) melting the aluminum ingot;

[0061] 3) After the aluminum ingot is completely melted, add the material obtained in step 1) into the molten aluminum for a reaction at a temperature of 750°C, and the reaction time is 20 minutes;

[0062] 4) After the reaction finishes, scoop off the slag;

[0063] 5) Add a solvent of 2% of the mass of the aluminum ingot for stirring and degassing refining, blow the solvent into the alloy liquid with argon to carry out refining and degassing, the refining time is 20 minutes, the argon pressure is 0.1Mpa, the stirring speed is 300rpm, and the stirring time is 20 minutes. The temperature is 800°C, and the solvent is a mixture of po...

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Abstract

The invention discloses an aluminum titanium boron carbon zirconium rare earth refiner, a preparation method and application thereof. The aluminum titanium boron carbon zirconium rare earth refiner comprises the following components by mass percent: 3% to 5% of titanium, 0.3% to 0.5% of boron, 0.08% to 0.15% of carbon, 0.08% to 0.22% of zirconium, 0.8% to 1.2% of rare earth, 0.10% or less of impurity Fe, 0.03% or less of impurity V, 0.08% or less of impurity Si and 0.15% or less of other impurities, and the balance being aluminum, wherein the content of each of the other single impurity elements is smaller than 0.03%. According to the aluminum titanium boron carbon zirconium rare earth refiner, through control of the reasonable addition amount of the zirconium element and preparation conditions, cylindrical objects and needle-shaped objects of TiAl3 are effectively decreased, TiB2 aggregation is reduced, generated harmful Al4C3 phases are decreased, size and distribution problems of TiAl3 phase particles are solved, the internal air content of an alloy is decreased, the refining time of the obtained refiner is short (10s), and the refining duration is long (larger than 12 h).

Description

technical field [0001] The invention relates to an aluminum-titanium-boron-carbon-zirconium rare earth refiner, a preparation method and application thereof, belonging to the field of alloys. Background technique [0002] With the development of society, the market has put forward higher requirements for the metallurgical structure, composition and performance of aluminum alloy products. The aluminum processing industry needs to produce aluminum alloy products with qualified metallurgical quality, uniform composition and excellent performance. [0003] The types of grain refiners for aluminum master alloys produced by traditional techniques include: aluminum titanium boron, aluminum titanium carbon, aluminum titanium boron carbon rare earth, etc. At present, the preparation of grain refiners for aluminum master alloys is prone to problems such as large agglomeration of TiB2 particles, uneven distribution of TiAl3, long refining time, short aging time, and too many inclusions...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C21/00C22C1/06
CPCC22C1/026C22C1/03C22C1/06C22C21/00
Inventor 徐正祥葛庆琪葛红星
Owner NANJING YUNKAI ALLOY CO LTD
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