HONEYCOMB FORMING FERRULE AND JIG FOR HONEYCOMB FORMING FERRULE USING THE FERRULE

Title:

HONEYCOMB FORMING FERRULE AND JIG FOR HONEYCOMB FORMING FERRULE USING THE FERRULE

Document Type and Number:

WIPO Patent Application WO/2003/082538

Kind Code:

A1

Abstract:

A honeycomb forming ferrule (10) having such a structure that groove-like slits (2) are formed of cell blocks (3) in a surface and rear holes (4) communicating with the slits (2) are formed in a rear surface and being formed of a cemented carbide with high wear resistance, wherein the cemented carbide is sintered at a high temperature after compressingly forming cemented carbide compound powder of transition metal element series with a tough iron family metal used as binder, and the ratio of the connection area of the cell blocks (3) to that of the rear holes (4) is 35 to 65%, whereby, by the honeycomb forming ferrule and a jig for honeycomb forming ferrule using the ferrule, when a basis material containing a very hard material such as SiC is extrudedly formed, the wear resistance of the ferrule or the jig for the ferrule can be increased, and the defective shape of a formed body due to the wear of the ferrule can be eliminated.

Inventors:

KANEKO TAKAHISA (JP)
NATE MASAYUKI (JP)
HIRONAGA MASAYUKI (JP)
DEGUCHI YUJI (JP)

Application Number:

PCT/JP2003/001030

Publication Date:

October 09, 2003

Filing Date:

January 31, 2003

Export Citation:

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Assignee:

NGK INSULATORS LTD (JP)
KANEKO TAKAHISA (JP)
NATE MASAYUKI (JP)
HIRONAGA MASAYUKI (JP)
DEGUCHI YUJI (JP)

International Classes:

B28B3/20; B28B3/26; B29C48/11; B29C48/30; B29C48/32; (IPC1-7): B28B3/26

Foreign References:

JP2000326318A	2000-11-28
JPH07246610A	1995-09-26
US5219509A	1993-06-15
US4278412A	1981-07-14
US4834640A	1989-05-30

Other References: