Zinc alterant

Abstract

The present invention discloses a zinc alterant for treating zinc and zinc alloy melt. It possesses two kinds of alterants, one of them is formed from (wt%) Al 20-40%, Ti 2-5%, B 0.5-1.5%, Xt 0.5-1% and Zn 55-75%; and another kind of formed from (wt%) Ti 2-4%, B 0.5-1.5%, Xt 0.5-1.5% and Zn 95-97%, in which the Xt is cerium system mixed rare earth. The application of said invented zinc alterant can make zinc and zinc alloy implement simultaneous uniform crystallizatino and form equiaxial fine grain tissue so as to obviously raise the service performance indexes of the product.

Description

technical field [0001] The invention relates to a modifier for zinc or zinc alloy melt treatment. Background technique [0002] Since the 1980s, my country's zinc production has been steadily increasing, and the application of zinc alloys, especially hot-dip galvanized, die-cast zinc and battery zinc, is becoming more and more extensive. [0003] The production of various zinc alloys in the prior art is based on the O-number zinc provided by the smelter as raw material, mixed with alloy components, stirred and other related methods are used to make the components uniform, and then cast into zinc alloy ingots of grades that meet the composition requirements. In order to make zinc alloy ingots meet various performance requirements in use, low-temperature casting is commonly used in production to reduce the gas absorption of the alloy, and water cooling is used to achieve a finer structure. However, there are still fundamentally insurmountable defects in this process explored ...

AI Technical Summary

Problems solved by technology

However, this process explored by experience still has fundamentally insurmountable defects, in which the crystallization mode and grain structure of the alloy still affect the performance of the product