Glass Forming Capabilities | Aerospace and Defense Optical Systems | Corning

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Glass Forming Capabilities

Glass Forming Capabilities

Glass Forming Capabilities

Glass Forming Capabilities

Corning’s HPFS® 7980 fused silica and ULE® 7972 Ultra Low Expansion glasses are manufactured by the flame combustion process, which introduces chemical vapors into gas-oxygen burners at approximately 1700°C.

The combustion reaction forms sub-micron size molten particles. The burners are aligned over a rotating table where the particles are collected and fused into a large dense solid boule of glass. Homogeneity is ensured through strict process control and by utilizing high-purity chemicals that are not subject to the ordinary compositional variations and contaminants of sand and other raw materials of conventional glass melting processes.