Patent ID: 8342230

Claim:
A casting method in which a molten metal is fed from a distributor, disposed at a molten metal introduction portion of a casting die, to a cavity of the casting die thereby performing casting, the method comprising: preheating the casting die to a predetermined temperature between 100 and 300 degrees Centigrade; setting a temperature of the distributor in an initial stage of casting in a range of 65° C. or lower: advancing a plunger; contacting a runner portion of the distributor with the molten metal, where said runner portion comprises copper or copper alloy with no surface treatment; performing the casting by feeding the molten metal past the distributor to the cavity of the casting die; keeping the temperature of the distributor in the range of 65° C. or lower until an air gap is formed by causing a portion of the molten metal proximate the runner portion of the distributor to partially solidify and move away from the distributor: and shrinking the air gap by a pressure of the plunger.