Manufacturing method of honeycomb structure
AssigneeNGK Insulators, Ltd.
InventorKosuke NOBIKI
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Abstract
The manufacturing method of the honeycomb structure includes a raw material preparing step of adding the powder of porous silica as the inorganic pore former to a forming raw material and kneading the forming raw material to prepare the kneaded forming raw material, an extruding step of extruding the obtained forming raw material to form a honeycomb formed body, and a firing step of firing the extruded honeycomb formed body to form a honeycomb structure containing a cordierite component, and an amount of oil to be absorbed by the porous silica to be added to the forming raw material is in a range of 50 to 190 ml/100 g, and a BET specific surface area of the porous silica is in a range of 340 to 690 m2/g.
Claims5
A manufacturing method of a honeycomb structure comprising:
- a raw material preparing step of adding powder of porous silica as an inorganic pore former to a forming raw material and kneading the forming raw material to prepare the kneaded forming raw material;
- an extruding step of extruding the obtained forming raw material to form a honeycomb formed body;
- and
- a firing step of firing the extruded honeycomb formed body to form the honeycomb structure containing a cordierite component and having partition walls defining a plurality of cells which become through channels for a fluid and extend from one end face to the other end face,
- wherein an amount of oil to be absorbed by the porous silica to be added to the forming raw material is in a range of 50 to 190 ml/100 g, and
- a BET specific surface area of the porous silica is in a range of 340 to 690 m2/g.
Dependencies are inferred from the claim text.