GlassCatalogue_LowRes

Glossary Of Terms / C
Molten glass
Mould
Glass is produced by pouring molten glass into a mould.
Ceramic enamel (frit)
A combination of crushed glass, metal oxide colourants and flux mixed in an oil or water
medium and fused onto glass. Also known as ceramic ink.
Cerium oxide
A compound used alone or together with other substances as a polishing agent for glass.
Chair rail
A fixed glazing bar or rigid push bar that provides protection from human impact. Also
known as a crash rail.
Chamfer
A transitional edge between two faces of an object. A form of bevel, it is created at a 45°
angle to two adjoining right-angled faces.
Channel
A U-shaped opening in a sash or frame to receive glass or insulating glass unit.
Channel depth
The measurement from the bottom of the channel to the top.
Channel width
The distance between the fixed and removable beads at the widest point.
Chemically toughened glass
Chemical toughening of glass is brought about through a process known as ion-exchange.
Glass is submersed in a molten salt bath at temperatures below the annealing range of
the glass. In the case of soda lime silica glass, the salt bath consists of potassium-nitrate.
During the submersion a chemical reaction takes place leaving the glass stronger.
Chip
A small shallow piece of glass which has become detached from the original glass edge or
the void it has left.
Chord
A straight line (or measurement) joining ends of an arc.
226 Product Catalogue For Glass Processors & IG Manufacturers