Refining agent and smelting technology of fusion casting aluminum bar for aluminum profile

Abstract

The invention discloses a refining agent and smelting technology of a fusion casting aluminum bar for an aluminum profile. The refining agent comprises, by mass, 30%-65% of NaCl, 15%-30% of Na2SiF6, 10%-25% of B4C and 5%-20% of NaSO4. The refining agent is simple in component, the refining agent is high in grain refining effect, good in impurity removal effect and high in degassing capacity when the refining agent is applied to an aluminum alloy smelting technology, the obtained aluminum bar is excellent in performance, and the refining agent is suitable for industrial popularization.

Description

Technical field [0001] The present invention relates to rod melting technology, and more particularly relates to a cast aluminum rod smelting process for aluminum refining agent used. Background technique [0002] Industrial aluminum aluminum as a main component of the alloy material rod by hot melt extrusion of an aluminum material to obtain a different cross-sectional shapes, but with different proportions of added alloy, the mechanical properties of the produced aluminum industry and applications are also different. Areas of general application in terms of industrial aluminum refers to all buildings except aluminum windows and doors, curtain wall, interior decoration and construction of structures other than aluminum. [0003] Aluminum is inevitably absorbed in the smelting process and carrier gas and the generation of inclusions, thereby causing the casting porosity, shrinkage, shrinkage, cracking and leakage and a series of defects, which would reduce the purity of the alumi...

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Problems solved by technology

[0004] Although the refining agents in the prior art can remove some inclusions and reduce the hydrogen content, the removal effect of inclusions such as fine inclusions and non-metal oxides cannot meet the requirements for the smelting process of aluminum alloys with more inclusions. , so it leads to a large amount of refining agent used, many components, and high cost; moreover, the above-mentioned refining agent also contains harmful elements such as benzene and fluorine, which will cause environmental problems such as aluminum ash and slag inclusions after production.

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