PURPOSE: To enable using of low pressure proof of a mold vessel and transfer of complicate and fine shape by exhausting air in the mold vessel before pouring molten metal at the time of obtaining the transferring mold with pressurized casting complex method by presetting a model pattern in the mold vessel and blowing the pressurized air into the vessel after pouring the molten metal.

CONSTITUTION: The gypsum-made model pattern 34 having permeability is set so as to plug venting holes 24 in bottom plate 14 of the mold vessel 10 and granular material 30 is packed into the vessel 10. Successively, the granular material 36 is preheated to the temp. higher than the critical preheating temp. to be permissible, to which the molten metal 38 poured into the vessel 10 penetrates into gap between the granular grains 36, and further lower than the solidified temp. of the molten metal 38. Under this condition, while sucking air in the vessel 10 through a suction hose 28, the molten metal 38 is poured and after pouring, the opening part of the vessel 10 is immediately closed and the pressurized air is blown in the vessel 10 through a pressurized air introducing hose 32. Then, this suction and pressurized air introduction are continued till solidifying the molten metal 38.