Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting
Patent
1995-10-02
1998-05-19
Czaja, Donald E.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
264 404, 264620, C04B 3302, G01B 500, F27B 904, F27B 910
Patent
active
057531609
ABSTRACT:
The present invention provides a method for controlling a firing shrinkage of a ceramic green body. The method includes the steps of: subjecting a ceramic powder to a pretreatment by which a spherical diameter (Rs) of the ceramic powder is adjusted to be 1 .mu.m or less, wherein Rs is expressed by an equation of Rs(.mu.m)=6/.rho. S (.rho. is a true density (g/cm.sup.3) of the ceramic powder, and S is a BET specific surface area (m.sup.2 /s) of the ceramic powder.); subjecting the ceramic powder to heat treatment at a specific temperature calculated in advance; molding the ceramic powder to obtain a ceramic green body; and firing the ceramic green body. A temperature for the heat-treatment is calculated of the basis of a correlation between calculative rates for firing and arbitrary selected temperatures.
REFERENCES:
patent: 2893102 (1959-07-01), Maxwell et al.
patent: 4341725 (1982-07-01), Weaver et al.
patent: 4772576 (1988-09-01), Kimura et al.
patent: 4774211 (1988-09-01), Hamilton et al.
patent: 5002909 (1991-03-01), Montino et al.
patent: 5238627 (1993-08-01), Matsuhisa et al.
patent: 5338713 (1994-08-01), Takagi et al.
patent: 5505865 (1996-04-01), Kumar et al.
Nanataki Tsutomu
Takeuchi Katsuyuki
Takeuchi Yukihisa
Yamamoto Hisanori
Czaja Donald E.
NGK Insulators Ltd.
Ruller Jacqueline A.
LandOfFree
Method for controlling firing shrinkage of ceramic green body does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for controlling firing shrinkage of ceramic green body, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for controlling firing shrinkage of ceramic green body will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1849872