Attapulgite-containing refining agent for melting of magnesium alloy

Abstract

A disclosed attapulgite-containing refining agent for melting of magnesium alloy is prepared from the following raw materials in parts by weight: 8-10 parts of attapulgite, 2-4 parts of quartz sand nanometer powder, 12-15 parts of tool steel powder, 3-4 parts of barium oxide, 2-3 parts of boron oxide, 3-4 parts of calcium fluoride, 1-2 parts of manganese chloride, 2-3 parts of magnesium sulfate, 0.3-0.5 part of titanium sponge, 2-3 parts of nanometer silica, 1-2 parts of straw ash, 10-12 parts of sodium nitrate, 1-2 parts of vermiculite powder, 3-4 parts of cryolite, 5-7 parts of charcoal powder, 13-15 parts of hexachloroethane, 7-9 parts of chlorinated rare earth, 5-6 parts of zirconium tetrachloride and 4-6 parts of GaSi. According to the refining agent, titanium sponge, manganese chloride and boron oxide are capable of chemically reacting with element iron in melt for forming compounds, slagging and discharging, so that the content of iron element in magnesium alloy is substantially reduced; cryolite is beneficial for improving the slagging capability of a solvent; zirconium tetrachloride is beneficial for improving inclusion removing rate of alloy and improving the mechanical properties and the corrosion resistance of alloy; and CaSi helps to improve the capability of forming composite inclusions.

Description

technical field [0001] The invention relates to the technical field of metal material processing, in particular to a refining agent for smelting magnesium alloys containing attapulgite. Background technique [0002] Magnesium alloy is the lightest metal structure material in practical application. It has the advantages of high specific strength and specific stiffness, thermal and electrical conductivity, electromagnetic shielding and environmental compatibility, but it has the problem of poor corrosion resistance. Magnesium chemical properties Lively, magnesium alloys often contain a large amount of impurities such as oxides, carbides and sulfides, which significantly reduce the mechanical properties and corrosion resistance of magnesium alloys. Therefore, during the smelting process of magnesium alloys, solvents are used to refine them. The purpose of the refining treatment is to reduce the impurity elements such as iron and non-metallic impurities such as magnesium oxide m...

AI Technical Summary

Problems solved by technology

[0002] Magnesium alloy is the lightest metal structure material in practical application. It has the advantages of high specific strength and specific stiffness, thermal and electrical conductivity, electromagnetic shielding and environmental compatibility, but it has the problem of poor corrosion resistance. Magnesium chemical properties Lively, magnesium alloys often contain a large amount of impurities such as oxides, carbides and sulfides, which significantly reduce the mechanical properties and corrosion resistance of magnesium alloys