Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1995-06-20
1997-08-05
Czaja, Donald E.
Glass manufacturing
Processes
Forming product or preform from molten glass
65102, 65DIG8, 6537415, C03B 900, C03B 1100, C03B 1300, C03B 1500
Patent
active
056537794
ABSTRACT:
A quartz glass component having a projection on a flat face is manufactured by molding a quartz glass body at a high temperature and under high pressure. The heating temperature is set to a range of from 1800.degree. to 2000.degree. C. and slight pressure is applied by the female die which forms the projection, or pressure in a direction against gravity. The molding die includes a graphite frame surrounding a molding space formed by a female die and a receiving die sandwiching the quartz glass body in the graphite frame. The space between the receiving die and the female die is width-reducible, the compositions of the graphite frame and the two graphite dies are made to differ, the female die and receiving die contacting the quartz glass body during pressure molding have a plurality of gas-permeable micropores such as in sintered graphite for example and are formed by a high-purity graphite material having air permeability.
REFERENCES:
patent: 3833347 (1974-09-01), Angle et al.
patent: 3874777 (1975-04-01), Deeg et al.
patent: 4358306 (1982-11-01), Okamoto et al.
patent: 4969941 (1990-11-01), Kyoto et al.
patent: 5026415 (1991-06-01), Yamamoto et al.
patent: 5250099 (1993-10-01), Kubo et al.
patent: 5306322 (1994-04-01), Ishikawa et al.
patent: 5417730 (1995-05-01), Shigyo et al.
Fujii Norikazu
Kimura Hiroyuki
Saito Makoto
Shinomiya Eiichi
Taniyama Kimikazu
Czaja Donald E.
Heraeus Quarzglas GmbH
Ruller Jacqueline A.
Shin-Etsu Quartz Products Co. Ltd.
LandOfFree
Method for manufacturing quartz glass components and molding fra 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 manufacturing quartz glass components and molding fra, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for manufacturing quartz glass components and molding fra will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1071724