The initial phase of melting batch For many modern glasses, the materials must be heated to a temperature of about 2450° F (1400° C) This is followed by a maturing period, during which the molten glass coo ls to a working temperature of about 2000° F (1100° C)
The initial phase of melting the batch, when the materials must be heated to a temperature of about 1400C This is followed by a maturing period, during which the molten glass coos to a working temperature of about 1100C All ancient and some more recent glasses had to be fritted before they could be melted
the act of starting something for the first time; introducing something new; "she looked forward to her initiation as an adult"; "the foundation of a new scientific society"; "he regards the fork as a modern introduction"
Founding means relating to the starting of a particular institution or organization. The committee held its founding congress in the capital, Riga He is founding director of The Conservation Foundation. see also found. the establishment of an organization, business, school etc = foundation. Process of pouring molten metal into a mold. When the metal solidifies, the result is a casting, a metal object conforming to that shape. Multitudinous metal objects are molded at some point during their manufacture. Modern foundries capable of large-scale production are characterized by a high degree of mechanization, automation, and robotics; microprocessors accurately control the automated systems. Advances in chemical binders have resulted in stronger molds and cores and in more accurate castings. Accuracy and purity are increased in vacuum conditions, and further advances are expected from zero-gravity casting in space