Ceramic rotors for pressure wave superchargers and production th

Details Ceramic rotors for pressure wave superchargers and production th Ceramic rotors for pressure wave superchargers and production th

1988-03-23

1989-06-13

Epstein, Henry F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Honeycomb-like

156 89, 165 10, 26417712, 428188, B32B 312

Patent

active

048392146

ABSTRACT:
Ceramic rotors for pressure wave superchargers are disclosed, which have a honeycomb structure, wherein a material constituting partition walls of the honeycomb structure has an apparent density of 4.0 g/cm.sup.3 or less, an open porosity of 3.0% or less, a coefficient of thermal expansion in a temperature range from room temperature to 800.degree. C. being 5.5.times.10.sup.-6 /.degree.C. or less, and a four point bending strength of 30 kg/mm.sup.2 or more. A process for producing such ceramic rotors for pressure wave superchargers is also disclosed. The process includes the steps of preparing a ceramic body in which an average particle diameter of a ceramic raw material is controlled to 1 to 10 .mu.m, extruding honeycomb structural bodies by press feeding the ceramic body through body feed holes and extruding channels having a width corresponding to a thickness of partition walls of the honeycomb structure in an extruding die, drying, firing and grinding the thus extruded bodies.

REFERENCES:
patent: 4304585 (1981-12-01), Oda et al.
patent: 4336304 (1982-06-01), Landingham et al.
patent: 4357987 (1982-11-01), Oda et al.
patent: 4489774 (1984-12-01), Ogawa et al.
patent: 4513807 (1985-04-01), Rose et al.
patent: 4550005 (1985-10-01), Kato
patent: 4556543 (1985-12-01), Mochida et al.

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