Mechanical part made of ceramics

Details Mechanical part made of ceramics Mechanical part made of ceramics

1991-06-20

1993-01-26

Robinson,, Ellis

Valves and valve actuation

Rotary valves

Ball valve

428141, 428167, 428179, 428409, 428410, 428426, 428457, 428472, 251368, 137237, F16K 500

Patent

active

051816911

ABSTRACT:
A mechanical part has a contact surface for movement on a mating surface. The contact surface is first rough ground by using a grinding wheel of a grain size, for example, equal to or smaller than #200 and then barrel finished or buffed so as to have such a profile that is roughness spacing ranges from 5 to 100 .mu.m and more than half of its peaks are smoothly rounded.

REFERENCES:
patent: 4343479 (1982-09-01), Fukuoka et al.
patent: 4771803 (1988-09-01), Berchem et al.
patent: 4983468 (1991-01-01), Oda

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