Hot work die steel forging module and preparation method thereof

The invention relates to a hot work die steel forging module and a preparation method thereof, and belongs to the technical field of steel smelting. The method comprises the following steps: performing electric arc furnace smelting and external refining on raw materials to obtain molten steel; pouring the molten steel to obtain a primary blank; and the primary blank is subjected to electroslag remelting, primary annealing, forging and forging module ultrafine treatment, and the steel forging module is obtained. According to the method, the purity of molten steel and the uniformity and volatility of components are improved through an electric arc furnace and external refining molten steel stage process in the earlier stage, and the purity of steel ingots, the uniformity of structures in modules and the size and distribution uniformity of precipitated phases are improved through slag remelting, primary annealing, forging and forging module ultra-refining treatment in the later stage; and the structure uniformit