A method for efficiently melting galfan alloy

Abstract

The invention relates to a Galfan alloy, particularly a method for efficiently smelting a Galfan alloy. The invention solves the problem in addition of the high-melting-point alloy and low-ignition-point alloy in the non-ferrous metal alloy preparation process, especially solves the problem of oxidizing combustion of the low-ignition-point alloy in the preparation process, and has obvious effects. A partition process adopted in the zinc-rare earth interalloy smelting process prevents the burning loss and oxidation of the rare earth, so that the burning loss rate is low, and the alloy element absorptivity is high; and thus, the partition process can effectively purify the solution and refine the grain. When being used for smelting a zinc-aluminum alloy, the method lowers the percentage of zinc and the mass ratio of aluminum zinc, reduces the segregation of aluminum, ensures the accuracy and uniformity of the chemical components, satisfies the requirements for the alloy components, and is suitable for mass production of the Galfan alloy.

Description

technical field [0001] The invention relates to Galfan alloys, in particular to a method for efficiently smelting Galfan alloys. Background technique [0002] Galfan alloy was developed by the International Lead-Zinc Organization in the 1970s and was put into production in 1984 to replace the new generation of anti-corrosion coating of hot-dip galvanizing. The alloy is based on 5wt.%Al-Zn eutectic alloy It was developed on the basis of the original alloy, and added rare earth elements (La, Ce, etc.) on the basis of the original alloy; Galfan alloy has a dense and uniform structure, good process performance, excellent corrosion resistance, long service life, and can save non-ferrous metals. In addition, Due to the low operating temperature and less slag and bottom slag produced in the production process, it can improve the working environment and save consumption. It is widely used in the automobile industry and household equipment; the molten salt protection method and the e...

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Problems solved by technology

[0004] One is that it is difficult to ensure accurate aluminum content: aluminum is prone to segregation, and the specific gravity of zinc and aluminum is greatly different, which will cause aluminum to float out, and coatings with different aluminum content will be produced in the alloy liquid

[0005] The second is that it is difficult to ensure the content of rare earth metals: rare earth metals have high melting points, are flammable, and are easily oxidized. At a certain temperature, the rare earth metals are directly added to the Zn-5%Al eutectic melt, and the rare earths burn seriously. Almost all the inner rare earths are oxidized and burned

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