Resources Contact Us Home
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
MU-MIMO-OFDMA multi-rank CQI and precoder signaling schemes
Method, medium, and system for flipping a list
Weight for vibration motor
Creating jobs by replacing execution attributes within job definition when a job activation request is received with execution attributes based on predetermined conditions being satisfied
Method and device for transmitter calibration
Density detection apparatus and method and image forming apparatus
  Randomly Featured Patents
Locking lever for ski boots
Electronic component carrier
System and method for providing random access to a multimedia object over a network
Human ubiquitin-conjugating enzyme
Spectrum analyzer user interface
SIP-based VoIP traffic behavior profiling method
Apparatus and method for achieving mechanical and thermal isolation of portions of integrated monolithic circuits
Automated transfer of live objects to shackle line method and apparatus
Source driver and operation method thereof and flat panel display
Image processing apparatus including compensation unit performing compensation in a printing direction and image processing method performing compensation in a printing direction thereof