To make it possible to easily obtain a casting mold made of a metal by specifying the ratio of the m.p. of the metal for constituting the casting mold and the m.p. of the metal to be cast into the casting mold at the time of manufacturing the casting mold made of the metal by casting.
The metal for the casting mold made of the metal constituting the casting mold made of the metal is selected by selecting the ratio (Mpc/Mpi) of the m.p. (absolute temp.) MPi of the metal (for example, copper or copper alloy) of the casting mold made of the metal constituting the casting mold made of the metal and the m.p. (absolute temp.) MPc of the metal for casting (for example, titanium or titanium alloy) to be cast into the casting mold made of the metal in such a manner that the ratio attains ≤2.4 at the time of manufacturing the casting mold made of the metal by casting. As a result, the casting mold made of the metal is easily manufactured.
OKAMOTO ICHIRO
KUWABARA HIDEYUKI
TSUTSUMI SADAMI
