Overflow chute inclusion for display sheet glass forming and repair method
A repair method and overflow tank technology, applied in glass forming, glass forming, glass manufacturing equipment, etc., can solve problems such as short service life of overflow tanks, prolong service life, reduce production costs, and improve service life Effect
Active Publication Date: 2009-12-23
IRICO
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Problems solved by technology
[0004] In order to solve the defect of the short service life of the existing overflow tank, the present invention provides a method of wrapping the overflow tank based on the process of spraying platinum on the refractory bricks, the purpose of which is to prolong the service life of the overflow tank and prevent damage Repair the overflow tank, realize the recycling and reuse of refractory materials, save production costs, and reduce the processing cycle of overflow devices
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[0017] Such as figure 1 , figure 2 Shown. The molten glass flows from the dissolution tank through the supply channel 1 to the glass sheet forming area, and a certain flow of molten glass is supplied to the overflow tank 2, and the glass frit entering the overflow tank 2, the chemical composition and temperature must be uniform. The overflow trough is a device with a wedge-shaped cross-section. On the upper part of the wedge, there are two parallel cofferdams, and the upper plane of the cofferdam is an inclined plane. From figure 2 It can be seen that the cross section of the overflow groove is similar to an elongated wedge, and the outer side is two formed glass plates that overlap at the root of the wedge. The contour lines of the bottom 9 and the side of the overflow tank must conform to the empirical calculation formula to ensure that the glass liquid flowing to both sides of the overflow tank is uniform. The molten glass overflows from the tops of the weirs on both sides, fl...
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Abstract
The invention discloses an overflow trough inclusion used for display sheet glass forming and a repair method in order to overcome the disadvantage that the prior overflow trough has short service life. The overflow trough inclusion and the repair method can prolong the service life of an overflow trough, and can repair a damaged overflow trough, thereby realizing the recovery of refractory materials, saving production cost and reducing the processing cycle of an overflow device. The overflow trough inclusion has the following technological key points that a high pressure spray gun is adopted to evenly spray prepared powder (mainly comprising platinum powder, a high temperature resistant adhesive, a flux material, and the like) on the surface of the overflow trough; after high-temperature heating treatment, a platinum coating is spread on the surface of a refractory material; and the overflow trough inclusion can be assembled inside a glass forming device after ground finish.
Description
Technical field [0001] The invention relates to an overflow trough wrap body for producing non-defective sheet glass for flat panel displays by an overflow down-drawing method and a repair method. Background technique [0002] Thin plate glass for flat panel displays mainly refers to liquid crystal substrate glass used in flat panel display technology. The substrate glass has high heat resistance, high transparency, low moisture absorption, high flatness, good solvent resistance, scratch resistance, and strong acid resistance. , Resistance to strong alkali and other characteristics. Liquid crystal flat panel display technology has very strict quality requirements for the flatness and thickness of the substrate glass surface, and its thickness is generally between 0.5mm and 1.4mm; the accuracy of the external dimensions must reach 1 / 10mm. If the accuracy of the substrate cannot be guaranteed, a local error will occur in the spacing between the two substrates, which will directly a...
Claims
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IPC IPC(8): C03B17/06
CPCC03B17/064
Inventor 徐剑李文军
Owner IRICO