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US 2015/0175489 A1Published application
Control of fired shape by piece orientation
AssigneeCorning Incorporated
InventorsDaniel Edward McCauley, Anthony Nicholas Rodbourn, David Robertson Treacy, JR., Casey Allen Volino
Life of this patent
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Abstract
A method of making ceramic bodies includes systematically orienting the bodies during firing relative to a temperature gradient in a kiln. The systematic orientation of the bodies relative to the temperature gradient can allow for an average deviation of a measured shape of the ceramic bodies from a predetermined target contour shape to be less than what they would be if the bodies were oriented randomly relative to the temperature gradient.
Claims17
A ceramic body made by the method of:
- extruding green bodies, said green bodies being extruded to a predetermined target contour shape, wherein a measured shape of at least some of the green bodies at least partially deviates from the predetermined target contour shape;
- firing the green bodies in a kiln to make ceramic bodies, wherein, during firing, the green bodies are oriented relative to a temperature gradient in the kiln such that an average deviation of a measured shape of the ceramic bodies from the predetermined target contour shape is less than the average deviation of the measured shape of the green bodies from the predetermined target contour shape.
A ceramic body made by the method of:
- extruding green bodies, said green bodies being extruded to a predetermined target contour shape, wherein a measured shape of at least some of the green bodies at least partially deviates from the predetermined target contour shape;
- firing the green bodies in a kiln to make ceramic bodies, wherein, during firing, at least a majority of the green bodies are oriented in the same direction relative to a temperature gradient in the kiln.
- wherein an average deviation of a measured shape of the ceramic bodies from the predetermined target contour shape is less than the average deviation of the measured shape of the green bodies from the predetermined target contour shape.
Dependencies are inferred from the claim text.