초록 ▼

In the technique for fiberizing glass by the use of a centrifugal spinner delivering glass streams into an attenuating blast, a novel spinner construction is provided, and provision is also made for increasing the production, while also providing for the use of glass of lower cost, and at the same t

In the technique for fiberizing glass by the use of a centrifugal spinner delivering glass streams into an attenuating blast, a novel spinner construction is provided, and provision is also made for increasing the production, while also providing for the use of glass of lower cost, and at the same time, reducing environmental pollution. Glass compositions and spinner alloy compositions particularly suited for use in accordance with the invention, are also disclosed.

대표청구항 ▼

Method for fiberizing molten glass by the use of a spinner having a peripheral wall with a plurality of rows of orifices for centrifugal projection of streams of the glass, the spinner being positioned within a downwardly directed annular gaseous blast, characterized by feeding the glass to be fiber

Method for fiberizing molten glass by the use of a spinner having a peripheral wall with a plurality of rows of orifices for centrifugal projection of streams of the glass, the spinner being positioned within a downwardly directed annular gaseous blast, characterized by feeding the glass to be fiberized into a spinner formed of an alloy consisting essentially and by weight of the following composition: ________________________________ Elements Ranges ________________________________ C 0.65-0.83 Cr 27.5-31 W 6-7.8 Fe 7-10 Si 0.7-1.2 Mn 0.6-0.9 Co 0-0.2 P 0-0.03 S 0-0.02 Ni (balance) ＿59-50 ________________________________ the glass consisting essentially of the following ingredients by weight: ________________________________ SiO2 60-64 Al2O3 5-6.5 Na2O 14.5-18 K2O 0-3 R2O =Na2O +K2O 16-18 Al2O3/R2O (0.25-0.4) CaO 5-9 MgO 0-4 MgO/CaO 0-0.75 MgO +CaO 8-9.5 MnO 1.5-4 BaO trace Fe2O3 0.8-3.5 MnO +BaO + Fe2O3 3.5-6.5 B2O3 trace Miscellaneous ≤1 of which SO3 ≤0.6 ________________________________ the glass being substantially free of fluorine, boron and barium.