Glass Manufacturing System Incorporating Optical Low-Coherence Interferometry Components
A low-coherence interferometric, measurement system technology, applied in the field of glass manufacturing systems incorporating optical low-coherence interferometric components, can solve the problem that glass sheets cannot be used for their intended purposes, reduce float glass process productivity, and difficult to measure glass ribbon thickness. And other issues
Active Publication Date: 2019-01-15
VITRO FLAT GLASS LLC
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- Application Information
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Problems solved by technology
However, as the glass ribbon exits the float tank, it is difficult to measure the glass ribbon thickness due to the high temperature of the glass ribbon, the flexibility of the hot glass ribbon, and the fact that the glass ribbon typically tilts as it exits the float tank
It is especially difficult to accurately measure the thickness of glass ribbons greater than 10mm thick
If the glass ribbon thickness is outside specification, the resulting glass sheet cannot be used for its intended purpose, thus reducing the productivity of the float glass process
Method used
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example 1
[0065] Figure 9 shown from as figure 1 An example of the signal shown for a float glass system in which the coater window is mounted 0.100 inches (0.25 cm) from any location and the bottom of the window is at the same height as the bottom of the coater, The surface of the glass ribbon was at a distance of 0.200 inches (0.51 cm) below the bottom of the coater and the thickness of the glass was 3.2 mm. Figure 10 Shown is an example of a signal from a system where the cover window is installed 0.100 inches (0.25 cm) from any location and at the same height as the bottom of the coater, with the surface of the glass ribbon at a distance of 0.300 inches (0.76 cm) below the bottom of the coater , and the thickness of the glass is 3.2mm. Figure 11 Shows an example of a signal from a system configured with a cover window mounted 0.100 inches (0.25 cm) from any location and at the same height as the bottom of the coater, with the glass ribbon surface 0.200 cm below the bottom of th...
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The float glass system (10) includes a float tank (14) having a pool of molten metal (16). A chemical vapor deposition coater (32) is located in the float tank (14) above the pool of molten metal (16). The coater (32) includes at least one low coherence interferometric probe (38) located in or on the coater (32) and connected to a low coherence interferometric system (36). Another low coherence interferometry probe (138) may be located outside the exit end of the float tank (14) and connected to the same or another low coherence interferometry system (36).
Description
[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application No. 61 / 839,899, filed June 27, 2013, which is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates generally to glass manufacturing processes, and more particularly to glass manufacturing processes incorporating one or more optical low coherence interferometry (OLCI) systems to determine the thickness or thickness profile of a glass ribbon, and in one exemplary aspect, the present invention also A float glass system that incorporates one or more optical low coherence interferometry (OLCI) systems to determine a coater gap relative to a coater located in a float tank. Background technique [0004] In a traditional float glass process, glass batches are melted in a furnace to form a glass melt. The glass melt is injected onto the top of a pool of molten metal, typically molten tin, at the entry end of the f...
Claims
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IPC IPC(8): C03B17/06C03C17/00C03B18/04
CPCC03B17/064Y02P40/57C03C17/002C03C2218/152C03B18/04G01B11/0675C23C16/4583C03B18/02G01B9/02091G01B11/14G01B11/06
Inventor 焦榆J·W·麦克卡米D·哈内坎普
Owner VITRO FLAT GLASS LLC