Method of manufacturing hollow ceramic part with hole therein
AssigneeNGK Insulators, Ltd.
InventorShinji Ohtsubo
Life of this patent
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Abstract
A method of manufacturing a ceramic part having a hollow portion and at least one hole extending through the ceramic part from the hollow portion to outside the ceramic part. The method includes the steps of molding a ceramic compact having the hollow portion, forming a hole in the ceramic compact, beveling an edge portion of the hole by passing a wire with a grindstone attached thereto into the hole from the hollow portion and then pulling a portion of the wire which has protruded from the hole while rotating the wire, and firing the ceramic compact.
Claims8
A method of manufacturing a ceramic part having a hollow portion and at least one hole extending through the ceramic part from the hollow portion to outside the ceramic part, said method comprising the steps of:
- molding a ceramic compact having said hollow portion;
- forming said hole in said ceramic compact;
- beveling an edge portion of said hole by passing a wire with a grindstone attached thereto into said hole from said hollow portion and then pulling a portion of said wire which has protruded from said hole while rotating said wire;
- and
- firing the ceramic compact.
A method of manufacturing a ceramic part having a hollow portion and at least one hole extending through the ceramic part from the hollow portion to outside the ceramic part, said method comprising the steps of:
- molding a ceramic compact having said hollow portion;
- forming said hole in said ceramic compact;
- firing the ceramic product;
- and
- beveling an edge portion of said hole by passing a wire with a grindstone attached thereto into said hole from said hollow portion and then pulling a portion of said wire which has protruded from said hole while rotating-said wire.
A method of manufacturing a ceramic part having a hollow portion and at least one hole extending through the ceramic part from the hollow portion to an outside of the ceramic part, said method comprising the steps of:
- molding a ceramic compact having said hollow portion;
- calcining the ceramic compact;
- firing the calcined ceramic compact;
- forming said hole in the fired ceramic part compact;
- and
- beveling an edge portion of said hole by passing a wire with a grindstone attached thereto into said hole from said hollow portion and then pulling a portion of said wire which has protruded from said hole while rotating said wire.
Dependencies are inferred from the claim text.