Patent ID: 11945023
Assignee: SINTOKOGIO, LTD.
Field: Materials, metallurgy (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A core molding method of molding a core using a metal mold pressure-fed with mulled sand, the method comprising:
heating the metal mold such that a temperature of the metal mold reaches a temperature higher than a predetermined baking temperature;
pressure-feeding the heated metal mold with the mulled sand;
holding the temperature of the metal mold having been pressure-fed with the mulled sand at the predetermined baking temperature;
removing the core from the metal mold after the holding; and
measuring a first temperature of the metal mold at end of the heating, wherein:
the holding includes measuring an adjustment time taken to change the temperature of the metal mold having been pressure-fed with the mulled sand to the predetermined baking temperature from start of temperature control of the metal mold;
the heating, the measuring the first temperature, the pressure-feeding, the holding, and the removing are executed sequentially and repeatedly; and
in the heating after the removing, a preliminary temperature of the metal mold is determined based on the measured first temperature and the measured adjustment time, and the metal mold is heated based on the determined preliminary temperature.