PROCESS OF GLASS

GLASS COMES FROM EGYPT. THE MANUFACTURE OF GLASS BLOOMED IN EGYPT AND MESOPOTAMIA UNTIL 1200 A.C. And LATER IT STOPPED ALMOST COMPLETELY FOR SEVERAL CENTURIES. EGYPT PRODUCED A CLEAR GLASS, WHICH CONTAINED PURE SILICA; THEY COLORED BLUE AND GREEN. BESIDES GLASSES THEY ALSO DID FIGURINES, AMULETS AND STONES, AS WELL AS GLASSY PIECES FOR INLAYS IN FURNITURE.

THE GLASS IS MADE FROM SILICA, SAND, CARBONATE OF LIME, AND SODIUM MOLTEN ALL AT 1500 ºC.

THE MIXTURE IS SENT TO THE SILOS WHERE IT IS READY TO BE LOADED INTO THE FURNACE.

THE FURNACE CONSISTS OF A RECTANGULAR CONTAINER WHERE THE RAW MATERIALS ARE MELTED.

AFTER THE REFINING PROCESS THE BUBBLES ARE REMOVED.

THE GLASS TEMPERATURE IS DECREASED GRADUALLY TO GET THE GLASS IN A STATE THAT CAN BE MODELED.

FINALLY IT GOES THROUGH A PROCESS OF COOLING WITH WATER AND THE GLASS PIECE IS READY.

INTEGRANTES:

Velazquez Georgina.

Gonnet Camila.

Gauchat Salvador.