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Fusion agent for smelting of magnesium alloy containing rare earth yttrium and preparation method thereof

A magnesium alloy and flux technology, which is applied in the metallurgy field of metal materials, can solve the problems of increasing the addition amount of rare earth yttrium element, reducing the content of rare earth yttrium, increasing costs, etc., and achieves the effects of improving effect, simple production process and reducing loss.

Inactive Publication Date: 2012-07-11
TAIZHOU VOCATIONAL & TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the currently commonly used RJ2 flux is used to smelt magnesium alloys containing rare earth yttrium, a large amount of rare earth yttrium will burn out, because the rare earth element yttrium is active and easy to react with magnesium chloride and magnesium oxide. The reaction is: 2[Y]+3MgCl 2 (l)=2YCl 3 (s)+Mg(l), and 3MgO+2Y=Y 2 o 3 +3Mg, the expensive rare earth yttrium is lost during the smelting process, the content of rare earth yttrium in the alloy is greatly reduced, and the addition of rare earth yttrium is increased, which also increases the cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The mass percent of the flux used for smelting magnesium alloy containing rare earth yttrium is: 33% magnesium chloride, 35% potassium chloride, 14% sodium chloride, 13% magnesium fluoride, 0.1% beryllium oxide, 4.9% yttrium carbonate.

[0027] The above-mentioned flux is prepared by the following method. After weighing the raw materials according to the ratio of the above-mentioned mass percentages of each raw material, magnesium chloride, potassium chloride, sodium chloride, magnesium fluoride, and beryllium oxide are simply mixed by manual blending, Put it in a drying oven, control the drying temperature at 100°C to 130°C and dry for 15 to 18 hours, then add the above-mentioned yttrium carbonate in the mass percentage, and put the above mixed materials into a ball mill for grinding and mixing for 15 to 19 hours After the raw materials are mixed evenly, they are sieved with a No. 30 sieve to obtain finished flux products for smelting magnesium alloys containing rare ea...

Embodiment 2

[0030] The composition and mass percentage of flux used for smelting magnesium alloy containing rare earth yttrium are: 30% magnesium chloride, 35% potassium chloride, 12% sodium chloride, 13% magnesium fluoride, 0.18% beryllium oxide, 6.82% yttrium carbonate.

[0031] After weighing the raw materials according to the ratio of the above-mentioned mass percentages of each raw material, magnesium chloride, potassium chloride, sodium chloride, magnesium fluoride, and beryllium oxide are simply mixed by manual blending, and then put into a drying box to control the temperature. Dry under the condition of 100°C-150°C for 12-15 hours, then add the above-mentioned mass percentage of yttrium carbonate, put the above-mentioned mixed materials together into a ball mill for grinding and mixing for 17-20 hours, and mix the raw materials evenly. Sieving with a No. 30 sieve to obtain a finished flux product for smelting magnesium alloys containing rare earth yttrium, which is stored in a dry...

Embodiment 3

[0034] The composition and mass percentage of flux used for smelting magnesium alloy containing rare earth yttrium are: 28% magnesium chloride, 38% potassium chloride, 13% sodium chloride, 14% magnesium fluoride, 0.23% beryllium oxide, 6.77% yttrium carbonate.

[0035] After weighing the raw materials according to the ratio of the above-mentioned mass percentages of each raw material, magnesium chloride, potassium chloride, sodium chloride, magnesium fluoride, and beryllium oxide are simply mixed by manual blending, and then put into a drying box to control the temperature. Dry under the condition of 100℃~130℃ for 15 hours, then add the above-mentioned mass percentage of yttrium carbonate, put the above-mentioned mixed materials together into a ball mill for grinding and mixing for 21 hours, after mixing the raw materials evenly, use a No. 40 sieve After sieving, the finished flux product for smelting magnesium alloy containing rare earth yttrium is obtained, which is stored in...

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Abstract

The invention relates to a fusion agent for the smelting of magnesium alloy containing rare earth yttrium and a preparation method thereof, belongs to the technical field of metal material metallurgy and aims to solve the technical problems of large ignition loss and poor purification effect of the rare earth yttrium when the fusion agent is used for smelting the magnesium alloy containing the rare earth yttrium. The invention provides the fusion agent for the smelting of the magnesium alloy containing the rare earth yttrium. The fusion agent contains the following components in percentage byweight: 25-35 percent of magnesium chloride, 30-40 percent of potassium chloride, 8-16 percent of sodium chloride, 10-15 percent of magnesium fluoride, 0.1-0.3 percent of beryllium oxide and 4-10 percent of carbonate. The invention also provides a preparation method of the fusion agent, which comprises the following steps of: mixing and drying the magnesium chloride, the potassium chloride, the sodium chloride, the magnesium fluoride and the beryllium oxide and adding the carbonate to prepare the fusion agent. The fusion agent has the advantages of reasonable composition, high rare earth yttrium yield and good refining effect. The method has the advantages of simple and convenient production process and low cost.

Description

technical field [0001] The invention relates to a flux used for smelting alloys, in particular to a flux used for smelting magnesium alloys containing rare earth yttrium and a preparation method thereof, belonging to the technical field of metal material metallurgy. Background technique [0002] Magnesium alloy is one of the lightest metal engineering structural materials, with low density (1.74g / cm3), high specific strength and specific stiffness, good thermal and electrical conductivity, good damping and shock absorption and electromagnetic shielding performance, and good dimensional stability of the product. It is easy to process and shape, easy to recycle waste, etc., and its applications in the fields of automobiles, electronics, home appliances, communications, instruments, and aerospace are increasing. It is known as "21st century green engineering metal" and will become an important commercial light metal quality structural materials. my country is rich in magnesium...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C1/06C22C23/00
Inventor 李克杰
Owner TAIZHOU VOCATIONAL & TECHN COLLEGE
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