Hitachi Metals, Ltd.

Tomohisa Ogata

Kazuyuki Kurakake

Hiroshi Inoue

A die having large numbers of grooves for molding a material to a honeycomb structure, wherein a surface having the grooves has an outer periphery in a polygonal shape having 6 or more corners, and wherein the grooves are crossing the outer periphery at an angle of 30&#xb0; or more.

Die for molding honeycomb structure, and its production method

A die comprising molding grooves arranged in a lattice pattern and moldable-material-supplying holes communicating with the molding grooves for molding a ceramic honeycomb structure, the molding grooves having width of 0.05-0.5 mm, the moldable-material-supplying holes being arranged in every intersecting portions of the molding grooves, or in every other intersecting portions of the molding grooves in a checkerboard pattern, and an average distance between the centers of the intersecting portions of the molding grooves, at which the moldable-material-supplying holes are arranged, and the center axes of the moldable-material-supplying holes being 10-100 &#x3bc;m.

Die for molding ceramic honeycomb structure

A method for producing a die for molding a ceramic honeycomb structure, which has molding grooves arranged in a lattice pattern and apertures communicating with the molding grooves for supplying a moldable material, wherein the formation of the lattice-patterned grooves by machining is conducted by a first machining operation for forming pluralities of first parallel grooves, and a second machining operation for forming second grooves crossing the first grooves; wherein the first and second machining operations are conducted by at least 2 passes of grinding or cutting using a rotating tool; and wherein the second machining operation is conducted by up-cutting in the second pass or later, and a method for producing a ceramic honeycomb structure using such a die.

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Moka, Japan

Tomohisa Ogata