Stabilization of color conversion process of various colors in glass production

A new color conversion process has been proposed for minimizing the glass defect occurring during the color conversion caused by the glass flow turbulence in glass melting furnace. Glass flow turbulence is caused by the variation of bottom furnace temperature and also due to the change of high temperature thermal conductivity of glasses. Iron oxide was examined as an additive to control the high temperature conductivity of glasses. The effect of iron oxide on the high temperature thermal conductivity was examined. Based on these results, optimum content of iron oxide needed to keep the high temperature conductivity constant between the glasses of different colors was determined. Finally color coordinate of glasses which contained estimated optimum iron oxide content was also examined to check if it can be used as a panel of cathode ray tube.