Efficient aluminum alloy refining agent and preparation method thereof

Abstract

The invention belongs to the technical field of aluminum alloy processing and discloses an efficient aluminum alloy refining agent and a preparation method thereof. The refining agent comprises, by weight, 30-40 parts of KCl, 20-30 parts of NaCl, 30-40 parts of KNO3, 6-11 parts of A1F3, 3-8 parts of MgF2, 4-10 parts of Na3A1F, 2-7 parts of Na2SiF6, 0.2-0.6 part of FNd and 0.5-1.1 parts of F3La. The efficient aluminum alloy refining agent is efficient in removal of small-size oxide inclusions, great in impurity removal, excellent in degassing and refining performance and capable of decreasing hydrogen content of aluminum alloy melt to 0.0816ml / 100gAl or below.

Description

technical field

[0001] The invention belongs to the technical field of aluminum alloy processing, and in particular relates to a high-efficiency refining agent for aluminum alloys and a preparation method thereof. Background technique

[0002] China ranks third in the world's aluminum consumption rankings. Although China's aluminum production ranks second in the world, most of the aluminum used in China is imported, and it is the world's largest aluminum importer. The reason for this situation is that China's aluminum industry is still far behind advanced countries in terms of production process control, product quality control, and production scale. Most importantly, China's lack of capacity and a large gap in the supply of high-quality aluminum billets are the main problems. In the process of smelting and casting, aluminum and its alloys are easily oxidized and absorb gas. This characteristic makes gas and inclusions easy to form in molten aluminum, which in turn causes a...

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