Processing of Glass Products
- Stages Involved in Glass Processing
- preparation, firing, forming, annealing
Glass is made from natural and abundant raw materials (sand, soda ash, and limestone) that are mixed together and heated in a furnace at a very high temperature to produce molten glass. When in molten state, it is then shaped and allowed to cool so as to form a hard piece, by blowing air into the mixture. The hard glass is then reheated again and allowed to cool gradually, in a process called annealing.
The articles obtained are then subjected to a number of operations, such as cleaning, polishing, grinding, and rounding edges, in order to bring them to a usable form.
Stages Involved in Glass Processing:
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