Honeycomb structure and method of manufacturing the same
AssigneeNGK Insulators, Ltd.
InventorYukihito Ichikawa
Life of this patent
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Abstract
There is provided a honeycomb structure having a consecutive cell structure and capable of reconciling reduction in pressure loss and improvement in purification ability and a method for manufacturing the honeycomb structure. The honeycomb structure 1 has a plurality of partition walls 2 partitioning a plurality of cells 3 extending in an axial direction. At least a part of continuous partition walls 2 has a curved shape protruding toward outside from the center 4 of a cross-section perpendicular to the axial direction or a curved shape protruding toward the center of the cross-section from outside.
Claims14
A honeycomb structure comprising:
- a plurality of cells extending in an axial direction;
- and
- a plurality of partition walls partitioning the plurality of cells and defining walls of the cells, wherein, when the honeycomb structure is viewed in a cross-section substantially perpendicular to the axial direction, the cells have four curved walls, opposite walls of each cell curving generally in a same direction.
A honeycomb structure comprising:
- a plurality of cells extending in an axial direction;
- and
- a peripheral wall that surrounds the plurality of cells;
- wherein, when the honeycomb structure is viewed in a cross-section substantially perpendicular to the axial direction:
- a plurality of pairs of the cells, each pair sharing a partition wall, are arranged such that the shared partition walls are on a curved line, the curved line curving generally in only one direction.
A method for manufacturing a honeycomb structure, comprising a step of forming a honeycomb formed body having partition walls partitioning a plurality of cells extending in an axial direction by extrusion-forming,
- wherein extrusion-forming is performed at different extrusion speed between a central portion and an outer peripheral portion to form partition walls each having a curved shape in a cross-section perpendicular to the axial direction.
Dependencies are inferred from the claim text.