Preparation process of rare earth alloying Cu-Fe alloy

The invention discloses a preparation process of a rare earth alloying Cu-Fe alloy, which comprises the following steps: filling copper powder, iron powder and rare earth powder into a ball milling tank, and then adding grinding balls for high-speed powder mixing to obtain composite powder; the rare earth powder is formed by mixing cerium and neodymium according to the weight part ratio of 10: (2-5); the composite powder obtained in the first step is sieved and then pre-pressed on an oil press through a cold pressing die, the pressing pressure is 100-200 KN, and a composite material blank is obtained; and the composite material blank obtained in the second step is put into a crucible and a pressure sintering furnace, heat preservation is conducted for 1-2 h when the composite material blank is heated to 800-1000 DEG C, heating continues, and the composite material blank is taken out when the composite material blank is heated to 1100-1200 DEG C and the furnace temperature is lowered, so that the rare earth al