Core for use in die casting process
AssigneeKioritz Corporation
InventorsFujihiro Matuura, Kazuo Sasaki, Masashi Sano
Life of this patent
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Abstract
A core for use in a die casting process has a wood fiber material as a main ingredient. The core can be disintegrated by exerting an external force subsequent to the die casting process. The core can also be disintegrated by applying a softening agent to soften it subsequent to the die casting process. Further, the core can be made up of a stack of paper layers that are peelably removable from each other.
Claims16
A core for use in a die casting process, wherein the core comprises:
- a stack of paper layers that are peelably removable from each other, the stack of paper layers comprising a wood fiber material as a main ingredient;
- and
- wherein the core is disintegrable by exerting an external force thereon after the die casting process.
A core for use in a die casting process, wherein the core comprises:
- a stack of paper layers that are peelably removable from each other, the stack of paper layers comprising a wood fiber material as a main ingredient;
- and
- wherein the core is disintegrable by application of a softening agent after the die casting process.
A core for use in a die casting process, wherein the core comprises:
- a stack of paper layers that are peelably removable from each other, the stack of paper layers comprising a wood fiber material as a main ingredient.
A core for use in a die casting process for forming a straight bore and an undercut portion that is in communication with the bore, the core comprising:
- a core body for forming the bore;
- and
- an undercut core for forming the undercut portion, the undercut core being attached to the core body so as to be separable from the core body by a shear force applied when the core body is withdrawn from said bore;
- wherein at least the undercut core comprises a stack of paper layers that are peelably removable from each other and that have a wood fiber material as a main ingredient, and is disintegrable by application of an external force or a softening agent subsequent to the die casting process.
Dependencies are inferred from the claim text.