FOREHEARTHS PRE-HEATING and PRE-HEATING CURVES All refractory structures have to be preheated before going into operation, since they are subject to a certain thermal expansion, and thus the consequent volume increase must be gradual to avoid any breakage later. The working temperature inside the glass melting tank, as well as in the forehearths could be […]
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Nondestructive testing of forehearth cover blocks
A 95 V