A kind of aluminum alloy refining agent containing lanthanum, erbium and zirconium

Abstract

The invention discloses an aluminum alloy refining agent containing lanthanum, erbium and zirconium. The refining agent includes material A and material B, wherein the material A includes the following raw materials in parts by weight: 70-80 parts of NaCl, 50-56 parts of KCl, 12-18 parts of LiCl, 30-36 parts of NaF, 10-12 parts of AlF3, 10-12 parts of sodium fluoroaluminate, 12-18 parts of carbon powder, 20-28 parts of light calcium carbonate, 5-10 parts of CaO; the B material It is composed of C2Cl6, TiO2 and metal in a weight ratio of 5:1.5~2:1~1.5, and the metal is a mixed metal containing Mg, La, Er and Zr; A material and B material are used together, and the weight ratio is 2~4 :1. Using the refining agent of the present invention in the process of refining aluminum alloy can not only realize the removal of hydrogen and oxide inclusions, but also play a role in modifying and refining the structure of aluminum alloy.

Description

technical field [0001] The invention relates to the field of aluminum alloy smelting and processing, in particular to an aluminum alloy refining agent containing lanthanum, erbium and zirconium. Background technique [0002] With the development of science and technology, automobile, shipbuilding, aviation, aerospace and other manufacturing industries have higher and higher quality requirements for aluminum alloy castings. In addition to ensuring chemical composition, mechanical properties and dimensional accuracy, castings are not allowed to have pores, shrinkage, etc. For the quality of aluminum alloy, the melting of aluminum alloy is a very important process in the production process of castings, and the purification treatment of aluminum alloy melt is one of the basic guarantee measures for the production of high-quality aluminum castings. The refining effect of aluminum alloy melt has an important impact on the formation of porosity, pores, inclusions, etc., and directl...

AI Technical Summary

Problems solved by technology

[0003] Although the current aluminum alloy refining agent can remove some inclusions and reduce the hydrogen content, but for the smelting process of aluminum alloys with more inclusions, especially the removal effect of inclusions such as small inclusions and non-metal oxides cannot meet the requirements, and also It is impossible to refine and modify the aluminum alloy melt while removing impurities from the aluminum alloy melt, so as to better improve the mechanical and service properties of aluminum alloy castings