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Method for refining pure aluminum with TiX ceramic particles

A technology of ceramic particles and pure aluminum, which is applied in the field of TiX ceramic particles to refine pure aluminum, can solve the problems of high cost, complicated preparation, difficulty in controlling the number of nucleation particles and particle size, and achieve the effect of performance improvement

Inactive Publication Date: 2019-04-26
SHANGLUO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for refining pure aluminum with TiX ceramic particles, which solves the problems of complex preparation, high cost, and difficulty in controlling the number of nucleation particles and particle size in the existing methods

Method used

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  • Method for refining pure aluminum with TiX ceramic particles
  • Method for refining pure aluminum with TiX ceramic particles

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Step 1. Weigh tungsten carbide balls and TiC powder according to the ball-to-material ratio of 10:1, put the two into a tetrafluoroethylene ball mill tank, then add an appropriate amount of alcohol as a dispersant, pre-vacuumize and fill a certain amount of amount of argon. Put the ball mill jar in a planetary high-energy ball mill, and perform high-energy ball milling at a speed of 400r / min for 5 hours to obtain a ceramic powder with a slightly larger particle size and irregular shape;

[0036]Step 2, disperse the TiC ceramic powder after high-energy ball milling in an appropriate amount of alcohol, and place it in an ultrasonic device for ultrasonic vibration for 10 minutes. Afterwards, filter and dry the powder and soak it in 10% dilute HCl for 18 minutes. On the one hand, the oxide skin on the surface of the TiX powder can be removed, and on the other hand, the powder can be activated;

[0037] Step 3, adding 0.4wt.% Mg powder to the TiX ceramic particle powder aft...

Embodiment 2

[0041] Step 1, weigh tungsten carbide grinding balls and TiB according to the ball-to-material ratio of 30:1 2 powder, put the two into a tetrafluoroethylene ball mill jar, then add an appropriate amount of alcohol as a dispersant, pre-evacuate and fill with a certain amount of argon. Put the ball mill jar in a planetary high-energy ball mill, and perform high-energy ball milling at a speed of 600r / min for 1 hour to obtain ceramic powders with fine particle size and irregular shape;

[0042] Step 2, the TiB after the above-mentioned high-energy ball milling 2 The ceramic powder was dispersed in an appropriate amount of alcohol and placed in an ultrasonic device for ultrasonic vibration for 20 min. Afterwards, filter and dry the powder and soak it in 15% dilute HCl for 20 minutes. On the one hand, the oxide skin on the surface of the TiX powder can be removed, and on the other hand, the powder can be activated;

[0043] Step 3, the activated TiB 2 Add 0.3wt.% Mg powder to th...

Embodiment 3

[0047] Step 1. Weigh tungsten carbide balls and TiN powder according to the ball-to-material ratio of 40:1, put the two into a tetrafluoroethylene ball mill tank, then add an appropriate amount of alcohol as a dispersant, pre-vacuumize and fill with a certain amount of amount of argon. Put the ball mill jar in a planetary high-energy ball mill, and perform high-energy ball milling at a speed of 500r / min for 8 hours to obtain a ceramic powder with a slightly larger particle size and irregular shape;

[0048] Step 2, disperse the TiX ceramic powder after high-energy ball milling in an appropriate amount of alcohol, and place it in an ultrasonic device for ultrasonic vibration for 15 minutes. Afterwards, filter and dry the powder and soak it in 20% dilute HCl for 10 minutes. On the one hand, the oxide skin on the surface of the TiN powder can be removed, and on the other hand, the powder can be activated;

[0049] Step 3, adding 0.1wt.% Mg powder to the TiN ceramic particle powd...

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Abstract

The invention discloses a method for refining pure aluminum with TiX ceramic particles. TiX powder is subjected to high energy ball milling, particles with different physical property parameters are obtained, then microelement Mg is added to the powder, and a refiner adopted by the method is prepared. The refiner is added to pure aluminum melt, finally pouring is carried out, and a refined aluminum ingot casting can be obtained after cooling is carried out. Aluminum crystalline grain prepared through the method are effectively refined, the crystalline grains are only 18.9 micrometers, and thesize of the crystalline grains is reduced by 40% to 45% relative to crystalline grains which are not refined. Meanwhile, the performance of the pure aluminum ingot is improved, and the density, microhardness and conductivity are improved by 18%, 40% and 17% at least relative to the crystalline grains which are not refined. A new method is provided for refining of pure aluminum and aluminum alloy.

Description

technical field [0001] The invention belongs to the technical field of alloy preparation, and in particular relates to a method for refining pure aluminum with TiX ceramic particles. Background technique [0002] The refinement treatment of aluminum and aluminum alloy not only significantly increases the smoothness of the surface, but also can significantly reduce the scrap rate caused by the casting and smelting process, and greatly increase the yield of aluminum products. Therefore, the refinement of aluminum and aluminum alloys has become a model for the aluminum processing industry. There are many refinement methods for aluminum and aluminum alloys, such as pressure processing, mechanical stirring in the casting process, etc. Among them, adding refiners to the melt is one of the simplest and most effective means. [0003] There are many types of refiners for pure aluminum and aluminum alloys, the most common of which is aluminum-based master alloy. The study found that...

Claims

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Application Information

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IPC IPC(8): C22C1/10C22C1/02C22C21/00C22C32/00
CPCC22C1/1005C22C1/1036C22C21/00C22C32/0052C22C32/0068C22C32/0073C22C1/1047
Inventor 代卫丽宋月红刘彦峰杨超普张美丽李春韩茜
Owner SHANGLUO UNIV