Zinc-aluminum binary intermediate alloy and uses in hot galvanizing alloy production

Abstract

The invention relates to a production process of a hot galvanizing alloy and a master alloy thereof, which has the technical proposal that, the components and the weight ratio of a zinc-aluminum binary master alloy are that 16-24 percent is aluminum and the rest is zinc. A method for producing the hot galvanizing alloy by the zinc-aluminum binary master alloy comprises the steps: mixing the zinc and the aluminum by the weight ratio, adding the mixture to a master alloy smelting furnace with the melting temperature of 560-680 DEG C to be molten, uniformly stirring, ingoting to a zinc-aluminum binary master alloy pig, adding the solid zinc required by hot galvanizing alloy production to a hot galvanizing alloy smelting furnace to be molten into zinc liquid, adding the zinc-aluminum binary master alloy required by the produced hot galvanizing alloy to the zinc liquid, and stirring for 20-40min at the melting temperature of 480-520 DEG C to prepare the hot galvanizing alloy. The invention which is applicable to the hot galvanizing alloy production by a cored induction furnace has the advantages of reducing the temperature of the melting alloy, shortening the melting and stirring time, prolonging the service life of the cored induction furnace and ensuring uniform hot galvanizing alloying components.

Description

technical field [0001] The invention relates to an alloy and a production process of the alloy. In particular, it relates to a production process of a hot-dip galvanized alloy. Background technique [0002] Hot-dip galvanized alloys generally need to add other elements to the zinc liquid, such as adding aluminum, rare earth, etc. The current production method of zinc-aluminum hot-dip galvanized alloy is to directly add solid aluminum to the zinc liquid after melting zinc. Solid aluminum Melting in molten zinc is used for industrial production in this way. Because aluminum has a high melting point and light specific gravity, it requires a relatively high melting temperature. Generally, a melting furnace temperature above 550°C is required. The more commonly used smelting heating method in the prior art is induction furnace heating. Since the smelting temperature of cored induction furnace is generally 500°C to 520°C, if the temperature is too high, the service life of the fu...

AI Technical Summary

Problems solved by technology

The more commonly used smelting heating method in the prior art is induction furnace heating. Since the smelting temperature of cored induction furnace is generally 500°C to 520°C, if the temperature is too high, the service life of the furnace will be reduced.

On the other hand, in this way of directly adding solid aluminum, it is necessary to stir the zinc liquid for a long time after adding solid aluminum, so that the aluminum element can be evenly distributed in the zinc alloy, and this will inevitably increase the The production cost is also difficult to achieve the desired effect, and it is very easy to cause composition segregation due to uneven mixing, which affects the quality of the alloy ingot

[0003] In summary, in industrial production, the direct aluminum addition method is not suitable for the production of cored induction furnaces that are economical, practical, environmentally safe, and easy to automatically control. The production method of hot-dip galvanized alloys needs to be further improved