Smelting method of steel 12Cr2Mo1R (H) for hydrogenation reactor

The invention discloses a smelting method of steel 12Cr2Mo1R(H) for a hydrogenation reactor. The smelting method comprises the processes of EAF furnace primary smelting, LF furnace refining and VD furnace vacuum treatment; as for the process of LF furnace refining, deoxidation, dephosphorization, desulfurization and inclusion removal are achieved through oxidation slag making, weak reduction slagmaking through deoxidation, and strong reduction slag making through deoxidation. As for the EAF furnace primary smelting process, the content of electric furnace tapping molten steel P is smaller than or equal to 0.008%, the efficiency of a primary smelting furnace is greatly improved, and the smelting cost is reduced. According to the smelting method, operation is simple and convenient, the LF deoxidation, desulfurization, inclusion removal effects can be ensured by using the low cost, the content of Si in finished steel is smaller than or equal to 0.10%, the content of P in the finished steel is smaller than or equ