Molding a Li ion conductive sulfide glass construct into a flat preform shape using a mold having a molding surface of a material that is chemically inert in direct contact with a glass blank when heated can improve molding performance.

Apparatus and methods are disclosed for forming a glass article in which molten glass is heated in a refractory vessel defining a space interior to the refractory vessel. A precious metal component is exposed to the interior space. The apparatus includes first and second electrodes exposed to the interior space. A first electrical power source configured to supply a first electrical current is connected between the first and second electrodes. A second electrical power source is connected between the precious metal component and at least one of the first electrode or a first auxiliary electrode and configured to provide a second electrical current out-of-phase with the first electrical current. A third electrical power source is connected between the precious metal component and at least one of the second electrode or a second auxiliary electrode and configured to provide a third electrical current out-of-phase with the first

Glass forming apparatuses which decrease dimensional variations in glass ribbons are disclosed. In embodiments, a glass forming apparatus may include a forming body defining a draw plane that extends in a draw direction. An enclosure may extend in the draw direction below the forming body. The enclosure may include a compartment positioned below the forming body in the draw direction. The compartment may include a cooled wall positioned adjacent to the draw plane, a fluid conduit positioned within the compartment and adjacent to the cooled wall, an extraction port extending through the cooled wall and positioned in the draw direction from the fluid conduit, and an injection port extending through the cooled wall and positioned in the draw direction from the fluid conduit.

The present invention provides an alkali-free glass sheet, including as a glass composition, in terms of mol %, 55% to 80% of SiO.sub.2, 10% to 25% of Al.sub.2O.sub.3, 0% to 4% of B.sub.2O.sub.3, 0% to 30% of MgO, 0% to 25% of CaO, 0% to 15% of SrO, 0% to 15% of BaO, 0% to 5% of ZnO, and 0% to less than 1.0% of Y.sub.2O.sub.3+La.sub.2O.sub.3, being substantially free of an alkali metal oxide, and having a strain point of 750° C. or more.

Li ion conductive sulfide glass, can be made by providing a pre-mix of precursor materials for making the Li ion conductive sulfide glass, providing a melting tank for processing the pre-mix to a molten state, and heating the melting tank to a temperature that is sufficient to melt form the Li ion conductive sulfide glass, wherein the melting tank is a metal vessel having inner wall surfaces that are coated with a corrosion resistant metal oxide layer.

Apparatus for conveying molten glass includes an electrical flange attached to a metallic vessel and an electrical flange support apparatus coupled to an electrode portion of the electrical flange and configured to prevent distortion of the metallic vessel and misalignment between the metallic vessel and an adjacent metallic vessel. A bracing assembly is also disclosed.

Provided is a manufacturing method for a glass article, including: a pre-heating step (S1) of heating a transfer pipe (7); and a transfer step (S4) of allowing a molten glass to flow inside the transfer pipe (7) after the pre-heating step (S1). The transfer pipe (7) includes: a main body portion (8) having a tubular shape; and a flange portion (9a, 9b) formed at an end portion of the main body portion (8). The main body portion (8) is retained by a refractory (10). The pre-heating step (S1) includes an external force application step of applying an external force (F) to the transfer pipe (7) to extend the transfer pipe (7).

Provided is a groove bottom curve design optimization method for an overflow brick, including: S1: obtaining a standard output of the overflow brick based on design parameters; S2: obtaining an initial groove bottom curve of the overflow brick based on the design parameters and the standard output; S3: obtaining a groove bottom curve of the overflow brick through straight line correction of the initial groove bottom curve based on a length of a splitting block; S4: obtaining an extreme thickness difference of a formed glass substrate through overflow simulation based on the groove bottom curve and the design parameters; and S5: when the extreme thickness difference is smaller than or equal to a preset threshold, processing the overflow brick using the groove bottom curve and the design parameters; and when the extreme thickness difference is greater than the preset threshold, adjusting the design parameters and repeating steps S1 to S4.

The present disclosure relates to an apparatus and method for cleaning an edge director, and more particularly, to an edge director cleaning apparatus that includes two or more nozzle pipes arranged to be parallel to each other, nozzle tips respectively provided at first ends of the two or more nozzle pipes, fuel manifolds respectively connected to second ends of the two or more nozzle pipes, and a fixing guide configured to fix the nozzle pipes, wherein the nozzle tips extend in an oblique direction with respect to an extending direction of the nozzle pipes. When the apparatus and method for cleaning an edge director according to the present disclosure are used, devit can be safely removed without damage to the apparatus while reducing downtime.

Glass-based articles that include a compressive stress layer extending from a surface of the glass-based article to a depth of compression are formed by exposing glass-based substrates to water vapor containing environments. The glass-based substrates have compositions selected to be fusion formable, to be steam strengthen able, and to avoid the formation of platinum defects during the forming process. The methods of forming the glass-based articles may include elevated pressures and/or multiple exposures to water vapor containing environments.