Method for manufacturing cast product
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsShoko Hori, Hirotsune Watanabe
Life of this patent
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Abstract
A method for manufacturing a cast product in which a core can be easily discharged from a casting roughly-shaped material is provided. A method for manufacturing a cast product according to the present disclosure includes: a step of hermetically sealing a casting roughly-shaped material formed by casting using a core in a container containing water; a step of heating the water contained in the container while keeping the casting roughly-shaped material hermetically sealed and thereby destroying the core while keeping a pressure inside the container at a pressure higher than an atmospheric pressure, and thereby forming core sand; and a step of discharging the core sand from the casting roughly-shaped material.
Claims3
A method for manufacturing a cast product, comprising:
- hermetically sealing a casting roughly-shaped material formed by casting using a core in a container containing water;
- heating the water contained in the container while keeping the casting roughly-shaped material hermetically sealed and thereby destroying the core while keeping a pressure inside the container at a pressure higher than an atmospheric pressure, and thereby forming core sand;
- and
- discharging the core sand from the casting roughly-shaped material,
- wherein
- the water contained in the container contains water glass, and
- a concentration of the water glass in the water in the container is, by mass %, no lower than 3% and no higher than 5%.
Dependencies are inferred from the claim text.