Alloyed aluminum-nickel-chromium-iron composite alloy for final deoxidizing in steel-making

Abstract

The invention relates to an alloy for steel in the metallurgical field, in particular to an aluminum nickel chrome copper iron composite alloy for final deoxidation and alloying in steelmaking. The aluminum nickel chrome copper iron composite alloy solves the problems that Cr, Ni and Cu are difficult to smash and process and troublesome in use, influence the steelmaking time, has large yield fluctuation, influence the smelting yield of steel grades, etc. The composite alloy simultaneously meets the smelting steel grade needs of a steel grade containing acid-soluble aluminum (Als) and Ni, Cr, Cu and other elements. The aluminum nickel chrome copper iron composite alloy comprises the following compositions in percentage by weight: less than or equal to 0.5 percent of C, less than or equal to 3 percent of Si, less than or equal to 0.05 percent of S, less than or equal to 0.05 percent of P, 3 to 70 percent of Al, 1 to 60 percent of Ni, 1 to 60 percent of Cr, 1 to 65 percent of Cu and the balance being Fe. The aluminum nickel chrome copper iron composite alloy has low melting point, large specific gravity, no pulverization, no impurity, convenient smelting operation, good and stable deoxidation effect, the Ni and Cu yield of 100 percent, the Cr yield of between 90 and 95 percent and high smelting yield of the steel grade.

Description

Technical field: [0001] The invention relates to an alloy for steel in the field of metallurgy, in particular to an aluminum-nickel-chromium-copper-iron composite alloy used for final deoxidation and alloying of steelmaking. Background technique [0002] All walks of life in our country are developing by leaps and bounds, and the steel products required are of good quality and variety. The market competition in the steel industry is very fierce, and the following deoxidizers for steelmaking are also required to be very strict, that is, low melting point, high specific The deoxidation depth is sufficient, the deoxidation product is easy to float, and the steel is purified, and the deoxidation alloy elements must meet the requirements for the composition of the steel, which is very difficult. Contents of the invention [0003] The purpose of the present invention is to provide a kind of aluminum-nickel-chromium-copper-iron composite alloy used for final deoxidation and alloy...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of aluminum-nickel-chromium-copper-iron composite alloy used for final deoxidation and alloying of steelmaking, which solves Cr, Ni, Cu difficult crushing and processing, troublesome use, influence on steelmaking time, large fluctuation of yield rate, Affecting the refining rate of steel grades and other issues