US Patent 7713050 Die for forming honeycomb structure
Patent 7713050 was granted and assigned to NGK Insulators on May, 2010 by the United States Patent and Trademark Office.
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A die for forming a honeycomb structure includes a die base having a first plate-like member and a second plate-like member, the first plate-like member is provided with groove portions on the side of a bonding surface between the first plate-like member and the second plate-like member, and a depth y (mm) of the groove portions satisfies:y≦a·(t1×E1+t2×E2)/(t1×t2×E1×E2)where t1 is a thickness (mm) obtained by subtracting the depth (mm) of the groove portions from a thickness (mm) of the first plate-like member, E1 is an apparent volume elasticity (GPa) of the first plate-like member at 25° C. in consideration of a state in which back holes are formed, t2 is a thickness (mm) of the second plate-like member, E2 is a volume elasticity (GPa) of the second plate-like member at 25° C., and a is a coefficient determined based on conditions during manufacturing.
US Patent 07713050 Die for forming honeycomb structure US Patent 7713050 Die for forming honeycomb structure
US Patent 07713050 Die for forming honeycomb structure
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