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AssigneeSchott AG
InventorsUlrich Fotheringham, Hauke Esemann, Markus Garsche-Andres, Bernd Hoppe, Matthias Brinkmann, Norbert Greulich-Hickmann
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A method for the homogeneous heating of semitransparent and/or transparent glass and/or glass-ceramic articles using infrared radiation so that the glass and/or glass-ceramic articles undergo heat treatment at between 20 and 3000° C., notably at between 20 and 1705° C. Heating is achieved by a component of infrared radiation which acts directly on the glass and/or glass-ceramic articles and by a component of infrared radiation which acts indirectly on said glass and/or glass-ceramic articles. The radiation component indirectly acting on the glass and/or glass-ceramic articles accounts for more than 50% of total radiation output.
A method for the homogeneous heating of semi-transparent and/or transparent glass articles and/or glass-ceramic materials using infrared radiation emitted by IR radiators, whereby a glass article and/or glass-ceramic material is subjected to a heat treatment in the range from 20° C. to 3000° C. characterized in that the heating is achieved by a component of infrared radiation acting directly on the glass article and or the glass-ceramic material as well as a component of infrared radiation acting indirectly on the glass article and/or glass-ceramic material, in which the component of the radiation acting indirectly on the glass material and/or the glass-ceramic materials amounts to more than 50% of the total radiation output emitted by IR radiators, and wherein the radiation is a shortwave infrared radiation with a color temperature higher than 1500 K.
A method for the homogeneous heating of semi-transparent and/or transparent glass articles and/or glass-ceramic materials using infrared radiation emitted by IR radiators, whereby a glass article and/or glass-ceramic material is subjected to a heat treatment in the range from 20° C. to 3000° C. characterized in that the heating is achieved by a component of infrared radiation acting directly on the glass article and/or the glass-ceramic material as well as a component of infrared radiation acting indirectly on the glass article and/or glass-ceramic material, in which the component of the radiation acting indirectly on the glass article and/or the glass-ceramic material amounts to more than 50% of the total radiation output emitted by IR radiators, wherein the infrared radiation which acts indirectly on the glass article and/or glass-ceramic material comprises a proportion of infrared radiation which is absorbed by a support body, converted into heat and emitted to the glass article and/or glass-ceramic material, which is thermally connected to the support body.
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