68th Conference on Glass Problems by Charles H. Drummond III

By Charles H. Drummond III

This publication is a cutting-edge selection of fresh papers on glass difficulties as provided on the 68th convention on Glass difficulties on the Ohio kingdom collage. subject matters comprise production, glass melters, combustion, refractories, and new advancements.

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In this zone, a series of refractory stirring banks blend the color into the base glass to produce a homogeneous color before the glass exits the zone after the last stirring bank. The number of stirrers in each stirring bank depends on the channel width. A wider the channel will require a greater number of stirrers cover the larger cross sectional area. The auger stirrers in a color forehearth typically have a flight diameter between β'Δ inches and 7Ά inches. The flight length of a stirrer should be equal to the glass depth.

Since the low-e coating is specifically designed to reflect this radiation, low-e glass will not heat up at the same rate as non-coated glass. This means that process settings need to be established and maintained for each type of low-e glass processed. Another concern is that the standard IR linescanner system requires the scanner to be mounted above the process looking downward. The width of scan required dictates that the scanner be a considerable distance away from the glass and, short of preparing a hole in the factory floor, the only viable mounting place is above the process.

Therefore, as long as this glass sheet is of the same type as the sheets before it, a valid emissivity setting is used and a corrected image is displayed. Another challenge is in the area of system cooling. Since the glass sheets have to be heated in the region of 650°C the ambient temperature in the area where the glass leaves the over is obviously quite high. Since the linescanner is mounted directly above the process, it is clearly in a very vulnerable position. This situation is made worse in the event of a glass break inside the oven, where the oven door must be opened wide to clear the blockage; exposing the scanner to even more heat.

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