Extrusion-forming jig
AssigneeNGK Industries, Ltd.
InventorsSatoru Inoue, Mitsuaki Watanabe
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Abstract
An extrusion-forming jig for extruding a ceramic batch to regulate a sectional shape and external dimensions of a honeycomb structure is formed by the extrusion. The jig includes electric discharge coating layers on surfaces of the jig contacting the ceramic batch. The electric discharge coating layers are made of a cemented carbide such as tungsten carbide. The jig is able to be used for many hours without necessitating replacement.
Claims3
An extrusion-forming jig for regulating a sectional shape and external dimension of a honeycomb structure formed by extruding a ceramic batch through an extrusion die, said jig comprising electric discharge coating layers formed on surfaces of said jig which contact said ceramic batch, said coating layers comprising a cemented carbide.
Dependencies are inferred from the claim text.