High-nitrogen alloy core-spun yarn

Abstract

The invention discloses a high-nitrogen alloy core-spun yarn, and relates to the technical field of molten steel refining. The core-spun yarn consists of a coating layer, a core powder layer and a guide core; the core powder layer is compounded between the guide core and the coating layer; the guide core is filled with a high-nitrogen layer; the core powder layer comprises a silicon iron nitride alloy, a solid nitrogen alloy element iron alloy and silicon base rare earth alloy powder; and the high-nitrogen layer comprises a vanadium nitrogen alloy, vanadium iron nitride and silicon iron nitride powder. The core-spun wire adopts a novel alloy material with a nitrogen content above 25%, which is relatively lower in cost and is prepared by calcining general alloy silicon iron powder for steelalloying in a nitriding furnace; and the core-spun wire is simple in preparation of raw materials and low in cost, and prominently improves the steel structural strength.

Description

technical field [0001] The invention belongs to the technical field of molten steel refining, and in particular relates to a high-nitrogen alloy cored wire. Background technique [0002] The development of high-nitrogen alloy cored wire in the prior art, including: silicon calcium cored wire, titanium iron cored wire, boron iron cored wire, silicon manganese calcium cored wire, rare earth silicon cored wire, rare earth silicon magnesium cored wire Wire, rare earth silicon barium cored wire, silicon calcium barium cored wire, silicon calcium barium aluminum cored wire, metal magnesium cored wire, iron calcium cored wire, calcium iron cored wire, pure calcium cored wire, aluminum calcium cored wire Cored wire, rare earth magnesium silicon calcium cored wire, carbon cored wire, etc. For the role of vanadium in steel, the iron and steel industry has been generally concerned about its contribution to precipitation strengthening in the past, but little research has been done on i...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a high-nitrogen alloy cored wire. By adopting a multi-layer partitioned cored wire to make it, the quality of the molten steel can be improved step by step when the cored wire is used. At the same time, a high-nitrogen alloy is used for alloying process to solve the The existing steel products are of insufficient quality and high cost

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