PROCESS FOR LEAVING FLOWS OF SEPARATE LOADS OF BOROSILICATE GLASS MELTING FROM A GLASS MELTING OVEN USING A HEATED BOTTOM ORIFICE, AND APPARATUS FOR PERFORMING THE PROCESS

摘要

P A.PROCESS FOR ALLOWING TO FLOW BY SEPARATE LOADS OF BOROSILICATE GLASS MELTING FROM A GLASS MELTING OVEN USING A HEATED BOTTOM ORIFICE AND APPARATUS FOR PERFORMING THE PROCESS. / P P B. CHARACTERIZE IN THAT THE FUSION OF THE GLASS STOPPER WHICH CLOSES THE OUTLET OF THE FUSION FURNACE IS OPERATED BY THE FOLLOWING STEPS: PREHEATING THE OUTLET PORT CONTAINING THE GLASS STOPPER BY INDUCTION HEATING ONLY, OR BY INDUCTION HEATING AND ADDITIONAL HEATING UP TO A TEMPERATURE WHICH IS BELOW THE MELTING TEMPERATURE FROM WHICH THE ELECTRICAL CONDUCTIVITY RATIO OF THE GLASS PLUG TO THE ELECTRICAL CONDUCTIVITY OF THE CERAMIC MATERIAL OF THE PURPOSE GREATER THAN ONE; CONTINUATION OF HEATING, WHILE MAINTAINING THE POWER OF INDUCTION HEATING, BY MEANS OF RESISTOR HEATING, OR ONLY THE GLASS CAP, BECOMING NEARLY LIQUID, IS QUICKLY HUNTED OUT OF THE MASS HYDROSTATIC PRESSURE IN MERGER THAT IS ABOVE IT. /P