A high-yield cored wire and its manufacturing method

Abstract

The invention discloses a high-yield cored wire and a manufacturing method thereof. The cored wire includes a core material and a steel strip, the core material includes a calcium wire and a magnesium strip, and the magnesium strip is located on the calcium wire The outer wall, the steel strip is located on the outer wall of the magnesium strip, the magnesium strip is a spiral magnesium strip, and the steel strip is a low-carbon steel strip. The present invention eliminates process gasification through the setting of calcium wire-magnesium strip-steel strip, and improves the utilization rate of the steel strip. The core material is evenly distributed in the steel strip, so that the amount of cored wire added to molten iron corresponds to the reaction intensity, which is convenient for control The amount of cored wire is to promote the balance and order of the reaction. Manganese and calcified magnesium are coated on the surface of calcium and magnesium to avoid oxidation and moisture. At the same time, heat insulation prevents premature melting of the core material, resulting in inaccurate dosage and calcification. The decomposed elements of magnesium and manganese in molten steel can also be used as deoxidizers and desulfurizers to assist in deoxidation and desulfurization without causing adverse effects on molten steel, thus increasing the yield and suitable for widespread promotion and use.

Description

technical field [0001] The invention relates to the field of cored wires, in particular to a high-yield cored wire and a manufacturing method thereof. Background technique [0002] In the metallurgical industry, in order to ensure the quality of steel billets and steel products, it is necessary to reduce the content of oxygen and sulfur in steel during steelmaking and casting. Using cored wire for processing is the most commonly used method at present. The core wrapping machine uses the steel belt to wrap the alloy powder or other alloy additives to be added into the molten steel into a composite material with arbitrary length, uniform composition and certain compactness. When metallurgical industry is refining metal, it is often necessary to The cored wire is injected into the molten steel to add core materials. The traditional cored wire is made of strip-shaped steel strip wrapped with alloy powder. The powder is easily distributed unevenly and will cause gasification in t...

AI Technical Summary

Problems solved by technology

[0002] In the metallurgical industry, in order to ensure the quality of steel billets and steel products, it is necessary to reduce the content of oxygen and sulfur in steel during steelmaking and casting. Using cored wire for processing is the most commonly used method at present. The core wrapping machine uses the steel belt to wrap the alloy powder or other alloy additives to be added into the molten steel into a composite material with arbitrary length, uniform composition and certain compactness. When metallurgical industry is refining metal, it is often necessary to The cored wire is injected into the molten steel to add core materials. The traditional cored wire is made of strip-shaped steel strip wrapped with alloy powder. The powder is easily distributed unevenly and will cause gasification in the process. After modern technology In recent years, there has been a cored wire that is added with a linear core material and coated with a coating on the surface, but some linear core materials cannot correspond to the failure state of the surface steel strip, and it is easy to cause the core material to melt without the steel strip failing. , resulting in inaccurate dosage, and some coatings cannot be used in metallurgy, but instead increase impurities in molten steel and increase steelmaking losses

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