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Multifunctional composite fluxing agent

A composite flux and multi-functional technology, applied in the field of rare earth fluxes, can solve the problems of inability to remove harmful effects of iron and little impurity removal effect, and achieve the effects of remarkable iron removal effect, high iron removal efficiency and convenient operation.

Inactive Publication Date: 2014-05-14
南通曼特威金属材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional rare earth flux can play the role of degassing, modifying and purifying in the aluminum alloy smelting process. Does not remove the harmful effects of iron, only slows down the effects, and has little effect on removing impurities

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Add the multifunctional composite flux of the following formula to the recycled aluminum: 2% rare earth compound; 45% sodium chloride; 45% potassium chloride; 5% sodium fluoroaluminate; 3% boride. The aluminum melt produced by the conventional miscible method was measured, and the hydrogen content was 0.13 ml / 100gAl, the non-metallic inclusion content above 10 μm was 0.01%, the inclusion content below 10 μm decreased by 75%, and the iron element content was 0.37%.

Embodiment 2

[0015] Add the multifunctional composite flux of the following formula to the recycled aluminum: 1% rare earth compound; 45% sodium chloride; 45% potassium chloride; 5% sodium fluoroaluminate; 4% boride. The aluminum melt prepared by the conventional miscible method was measured, and the hydrogen content was 0.14 ml / 100gAl, the non-metallic inclusion content above 10 μm was 0.01%, the inclusion content below 10 μm decreased by 72%, and the iron element content was 0.32%.

Embodiment 3

[0017] Add the multifunctional composite flux of the following formula to the recycled aluminum: 2.5% of rare earth compounds; 45% of sodium chloride; 45% of potassium chloride; 5% of sodium fluoroaluminate; 2.5% of borides. The aluminum melt prepared by the conventional miscibility method was measured, and the hydrogen content was 0.12 ml / 100gAl, the non-metallic inclusion content above 10 μm was 0.1%, the inclusion content below 10 μm decreased by 78%, and the iron element content was 0.41%.

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PUM

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Abstract

The invention discloses a multifunctional composite fluxing agent. The multifunctional composite fluxing agent comprises the components of, by mass, 1-4% of rare earth compound, 40-45% of sodium chloride, 40-45% of potassium chloride, 2-18% of sodium fluoroaluminate and 1-4% of boride, wherein the sum of the mass of the rare earth compound and the mass of the boride accounts for 3-8% of the total mass of a rare earth fluxing agent. The multifunctional composite fluxing agent is obvious in dehydrogenation, deoxygenization and deironing effect, enables the hydrogen content in molten aluminum to be reduced to 0.10-0.15ml / 100gAl, removes non-metallic inclusions above 10 micrometers in size almost, enables inclusions below 10 micrometers in size to be reduced by 60-80%, enables the iron element content to be reduced from above 0.9% to below 0.5%, is high in deironing efficiency, simple in technology and convenient to operate and can improve the comprehensive performance of aluminum alloy.

Description

technical field [0001] The invention relates to a rare earth flux, in particular to a multifunctional composite flux. Background technique [0002] Aluminum is a recyclable resource. Recycled aluminum has the same properties as primary aluminum. It can be remelted, refined and purified with recycled aluminum ingots. After adjusting the chemical composition, it can be made into various cast aluminum alloys and deformed aluminum alloys, and then processed into aluminum castings. Or plastically processed aluminum. However, the fundamental reason why recycled aluminum cannot be equal to primary aluminum is that the purity of recycled aluminum is low, the internal structure is poor, and the gas, inclusions and impurity elements in recycled aluminum ingots exceed the standard, especially if the content of impurity elements such as iron and silicon exceeds the standard in a small amount. Aluminum properties have a huge impact. Therefore, the purification treatment of aluminum all...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B21/06C22B9/10C22C1/06C22C21/00
Inventor 陈东宁姚蕴辉倪红军周红林
Owner 南通曼特威金属材料有限公司
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