Degassing and deoxidation process for cast aluminum bronze

The invention discloses a degassing and deoxidation process for cast aluminum bronze. The process comprises the following steps of: 1) preheating a crucible; 2) charging according to a sequence, melting, adding an aluminum block, melting the aluminum block, adding an iron sheet, and stirring liquid state furnace charges by using a graphite rod after all furnace charges are melted into liquid; 3) heating to reach the temperature of between 1,250 and 1,300 DEG C; 4) adding zinc chloride for degassing; 5) adding rare-earth cerium for deoxidizing and degassing; 6) standing for 3 to 5 minutes, adding phosphor copper, refining and deoxidizing; and 7) standing for 3 to 5 minutes, slagging off, tapping, pouring a casting mould, and performing air cooling on a casting. By the degassing and deoxidation process, oxygen and hydrogen in molten aluminum bronze can be removed effectively, oxide impurities and air holes in the casting are reduced or eliminated, and the yield and the mechanical property of the casting are improved. The process is simple and low in production cost, energy consumption is not increased, copper liquid is high in flowability, and the mold filling capacity of the casting mould is facilitated.