HORN researches forehearth firing

One of these practical research studies was carried out directly in HORN´s workshop. The effects of different burner types on the thermal homogeneity of glass and the heating efficiency as well as the adverse effect of the flames on the refractory material were tested on a forehearth model.

In order to simulate a real forehearth, the same cross-section dimension of a typical forehearth and the same material was used. The forehearth model was heated to normal operating temperature. In addition, the model was filled with molten glass to the same depth as in a real forehearth.

Under these conditions, the heat exchange between the superstructure, the glass surface and the combustion products could be examined realistically. The temperature of the glass at five different points, the temperature of the super-structure, the burner blocks, and inside the combustion chamber, as well as other important parameters were recorded precisely and continuously. The analysis of these test results increased HORN’s know-how regarding forehearth firing.

Once again, HORN´s research and development department has taken a positive step forward regarding forehearth development.

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