Manufacturing method of nitrogen-containing corrosion-resistant plastic die steel forging material

The invention discloses a manufacturing method of a nitrogen-containing corrosion-resistant plastic die steel forging material, which solves the problem of nitrogen increase in production of high-nitrogen corrosion-resistant plastic die steel, breaks through the production bottleneck of a processing technology of a large-specification forging material, and improves the internal and surface quality of the steel material. Specifically, smelting in an electric furnace, LF and VD is adopted to enable the nitrogen content to reach the maximum dissolvable amount under normal pressure, and the adding amount of a nitriding alloy material in the later period is reduced; in the remelting process of the pressurized electroslag furnace, nitrogen is blown into the furnace for pressurization, and a nitroalloy material is added to meet the control requirement of nitrogen in the components. And the problem of large-specification forging material production process is solved through hot working of the fast forging machine and