Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Die for molding honeycomb structure and manufacturing method thereof










Image Number 3 for United States Patent #7670644.

A die for extrusion-forming a honeycomb structure which includes: a die base provided with ceramic puddle introducing holes and slits in communication with the ceramic puddle introducing holes; and a substrate layer, which roughly defines the final width of the slits, and a surface layer, which precisely defines the final width of the slits, formed on the die base in this order so that the final width of the slits becomes 15 to 200 .mu.m, wherein the surface layer is made up of tungsten carbide particles which are 5 .mu.m or less in average particle diameter and contain W.sub.3C as a main ingredient. According to this invention, there is provided a die for extrusion-forming a honeycomb structure which can restrain fluctuation in extrusion-forming speed among its parts and resistance to pushing force, both caused at the time of extrusion-forming, to be very small and is superior in productivity and durability.








 
 
  Recently Added Patents
Workflow-enabled client
Incrementally increasing deployment of gateways
Controller with screen
Method for olympic event hospitality program management
Toy ball
Air filter
Circuit board and display panel assembly having the same
  Randomly Featured Patents
Manual filling aid with push button fill
Image forming apparatus
Restraining devices
Oral composition containing antibodies to Bacteroides gingivalis
Piezoelectric accelerometer for automobiles
Paving crack sealer machine
Combined speech and alternate input modality to a mobile device
Method and apparatus for global rapid transit
Recessed top feed for sewing machines
Gypsum fiberboard door frame