Honeycomb forming die and jig for honeycomb forming die...

Details Honeycomb forming die and jig for honeycomb forming die... Honeycomb forming die and jig for honeycomb forming die...

2007-12-17

2010-12-28

Wollschlager, Jeffrey (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

C264S177110, C264S211110, C425S380000, C425S464000, C425S466000, C425S467000

Reexamination Certificate

active

07858007

ABSTRACT:
A die was provided for forming a honeycomb body having a structure provided with groovy slits on a front face thereof, the slits being formed by cell blocks and back holes on a back surface thereof, each hole being communicatively connected with the slit. The die is made of cemented carbide having wear resistance. The cemented carbide is formed by compacting, followed by sintering at high temperature, metal carbide powder of transition metal element series with an iron group metal binder having toughness. A connection area ratio of the back hole and the cell block is 35 to 65%.

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