Silicon manganese nitride cored wire for nitrogen addition of vanadium microalloyed steel

The utility model relates to a silicon manganese nitride cored wire for the nitrogen addition of vanadium microalloyed steel, particularly relates to a cored wire for the nitrogen addition of the vanadium microalloyed steel, belongs to the field of external refining of molten steel. The cored wire comprises a wire core and a wrapping layer. The cored wire is characterized in that the wire core is made of a granular silicon manganese nitride alloy, and the granularity of the wire core is 0.20-1.2mm; the wrapping layer is made of a low-carbon steel strip, the thickness of the low-carbon steel strip is 0.32-0.45mm, and the low-carbon steel strip is closely wrapped on the wire core; the cored wire is in a circular strip shape, and the diameter of the cored wire is 9-16mm. The cored wire disclosed by the utility model is applied to an electric furnace-LF (Low Frequency) furnace-continuous casting steel-making process flow or an electric furnace-LF furnace-VD (Vacuum Distillation) furnace-continuous casting steel-m