A kind of aluminum alloy refining agent containing cerium yttrium erbium

Abstract

The invention discloses an aluminum alloy refining agent containing cerium, yttrium and erbium, which comprises material A and material B, wherein the material A comprises the following raw materials in parts by weight: 70-80 parts of NaCl, 50-56 parts of KCl, and 10-15 parts of MgCl , NaF30~36 parts, AlF310~12 parts, sodium fluoroaluminate 10~12 parts, graphite powder 5~10 parts, light calcium carbonate 15~25 parts; The B material is made of C2Cl6, TiO2 and metal by weight ratio 5 : 1.5~2: 1~1.5, the metal is a mixed metal containing Mn, Ce, Y and Er; material A and material B are used together, and the weight ratio is 2~4:1. The refining agent of the invention is applied to aluminum alloy refining, and can modify and refine the structure of the aluminum alloy while removing hydrogen and oxide inclusions, thereby improving the mechanical properties of the 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 cerium, yttrium and erbium. Background technique [0002] Aluminum alloy has low density, but relatively high strength, close to or exceeding high-quality steel, good plasticity, can be processed into various profiles, has excellent electrical conductivity, thermal conductivity and corrosion resistance, and is widely used in industry. However, the cast aluminum alloy may cause a series of defects in the casting during the smelting process, such as pinholes, pores, slag inclusions, etc., which seriously affect the quality of aluminum alloy castings; in order to improve the quality of aluminum alloy castings, aluminum alloy melt The treatment of aluminum alloy is an important link. The main task of aluminum alloy melt treatment is to improve the purity of alloy liquid, and the means to improve the purity is refining. ...

AI Technical Summary

Problems solved by technology

However, the cast aluminum alloy may cause a series of defects in the casting during the smelting process, such as pinholes, pores, slag inclusions, etc., which seriously affect the quality of aluminum alloy castings; in order to improve the quality of aluminum alloy castings, aluminum alloy melt The treatment of aluminum alloy is an important link. The main task of aluminum alloy melt treatment is to improve the purity of alloy liquid, and the means to improve the purity is refining. Refining treatment of aluminum liquid is one of the key processes in the aluminum alloy smelting process. Refining can remove hydrogen and oxide inclusions to achieve the purpose of eliminating pinholes in castings, thereby improving the mechanical and service properties of aluminum alloy castings

[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