Alloy zinc ingot and preparation method thereof

Abstract

The invention discloses an alloy zinc ingot and a preparation method thereof. The alloy zinc ingot is prepared from the following components in percentage by weight: 50-58 percent of aluminum, 1.2-1.8 percent of silicon, 0.01-0.2 percent of titanium, 0.01-0.5 percent of rhenium, 0.03-0.7 percent of lanthanum-cerium mixed rare earth and the balance of zinc. The preparation method comprises the following steps: proportioning according to the percentage, wherein the titanium metal element takes a titanium-zinc alloy ingot with the titanium content of 5 percent as one of raw materials; putting the proportioned metals into a melting furnace, raising the temperature to 720-790 DEG C, stirring, pounding into slag for 50-80 minutes, then cooling to 620-680 DEG C, stirring, and removing the slag; pouring an ingot for 2-5 minutes every time by adopting a mobile type movable zinc chute, and rapidly kneading a skin after pouring is finished; when the center temperature of an alloy liquid descends to 450-480 DEG C, slowly sprinkling water when observing the diameter of the unconsolidated region of the upper surface is within 200mm, and gradually increasing the irrigation volume; and finally, drawing mould, and carrying out object surface treatment. The alloy zinc ingot is capable of improving the abrasion resistance and the heat reflection of the surface of plating, is beautiful in surface, uniform in color distribution in the surface, small in loss and small in slag on surface.

Description

technical field [0001] The invention relates to the technical field of metal alloys, in particular to an alloy ingot and a preparation method. Background technique [0002] In recent years, as the requirements for corrosion resistance and appearance quality of steel products have become higher and higher, many zinc alloy coatings have been developed in the field of hot-dip galvanizing. Among them, the most researched and the most outstanding achievement is the research on zinc-aluminum alloy coating. Galvalume is currently the most widely used effective method to prevent corrosion of steel materials in the world. This coating combines the corrosion resistance of aluminum and the electrochemical protection of zinc, so it has attracted a lot of attention. However, with the increasing acid rain and sandstorm erosion in the environment, not only higher requirements are put forward for the corrosion resistance of the galvanized layer, but also more comprehensive properties are ...

AI Technical Summary

Problems solved by technology

However, with the increasing acid rain and sandstorm erosion in the environment, not only higher requirements are put forward for the corrosion resistance of the galvanized layer, but also more comprehensive properties are required on the surface of the galvanized layer. Poor abrasiveness, low heat reflectivity, poor heat resistance and unsightly surface defects

And in the manufacturing process, there will be uneven composition of the zinc pot, serious loss, and many slag on the surface.

[0003] At the same time, in the process of preparing alloy ingots in the prior art, it is easy to segregate aluminum, and at the same time, the metal will appear evenly distributed during crystallization, so that segregation bands appear on the surface of the alloy ingot, and the outer pattern is uneven, which seriously affects beauty