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
Pulsed plasma with low wafer temperature for ultra thin layer etches
Methods and systems for presenting an inhalation experience
Active metal fuel cells
Wind farm, wind power plant in a wind farm and operating control for this purpose
Liposomal nanoparticles and other formulations of fenretinide for use in therapy and drug delivery
Combination of a microorganism and a phytosphingosine derivative, composition, methods of use
Method of forming a power supply controller and structure therefor
  Randomly Featured Patents
Method of using as a selectable marker a nucleic acid containing AHAS promoter useful for expression of introduced genes in plants
Silver halide emulsion and process for its preparation
System and method of fuel cell power generation
Method and apparatus for storing and accessing texture maps
Multifunctional dispersants
Catalyst for producing aldehyde and alcohol from olefin, carbon monoxide and hydrogen
Message processing method, device, system and recording medium
Locking mechanism, systems and methods for cargo container transport security
Undershoot eliminator circuit and method for synchronous rectified DC-DC converters