Abstract:
PROBLEM TO BE SOLVED: To provide a method of eliminating carbon from a platinum-containing metallic component for use in a glass making system to reduce gaseous blisters in molten glass.SOLUTION: The method includes: providing a first platinum-containing metallic member (inner layer 58) having a concentration of carbon greater than 3 ppm; and heating the first platinum-containing metallic member (inner layer 58) in a first heat treating step at a temperature and for a period of time effective to reduce the concentration of carbon to less than 3 ppm. It is preferable that the first platinum-containing metallic member (inner layer 58) is heated to a temperature of ≥1,200°C for ≥12 hours in an atmosphere containing ≥20 vol.% oxygen. It is preferable that the method further includes coupling together the first platinum-containing metallic member (inner layer 58) and a second platinum-containing metallic member (outer layer 60) in an overlapping relationship to form an assembly with a first interstitial space (62) formed between the first and second platinum-containing metallic members.
Abstract:
PROBLEM TO BE SOLVED: To protect an electrode holder part in contact with a molten glass from corrosion by the molten glass, and to allow the electrode holder to operate at a higher temperature.SOLUTION: The electrode holder (10) for a glass melting furnace includes: an outer wall (12); an inner wall (14) defining a channel (20) for receiving an electrode; a coolant passage (30, 40) for receiving a flow of a coolant positioned between the outer wall and the inner wall; and a nose member (16) joining the inner wall and the outer wall at a first end of the electrode holder. The nose member comprises a refractory barrier layer (46) deposited on an outer surface thereof and the barrier layer is in contact with a molten glass material (48) in the furnace.
Abstract:
PROBLEM TO BE SOLVED: To suppress the formation of gaseous inclusions in glass sheets.SOLUTION: There are provided the apparatus and method for controlling the environment (e.g., oxygen, hydrogen, humidity, temperature, gas flow rate, pressure) around one or more vessels 115, 120 and 125 in a glass manufacturing apparatus 100. The apparatus includes a closed-loop control apparatus 144 and a capsule 140 that are used to control the level of hydrogen around the exterior (non glass contact surface) of the vessels 115, 120 and 125 so as to suppress the formation of gaseous inclusions and surface blisters in glass sheets. In addition, the closed-loop control apparatus 144 and capsule 140 can be used to help cool molten glass 114 while the molten glass 114 travels from one vessel to another vessel in the glass manufacturing apparatus 100. Moreover, the closed-loop control apparatus 144 and capsule 140 can be used to maintain an atmosphere with minimal oxygen around the vessels 115, 120 and 125 so as to reduce the oxidation of precious metals on the vessels.
Abstract:
PROBLEM TO BE SOLVED: To deal with damage due to thermal cell induced blisters caused by air infiltration from a connection of glass manufacturing units in a glass manufacturing system.SOLUTION: A fiber-based gasket 102 is placed in a connection 180 between a capsule 172 and a fusion draw machine 150. The fiber-based gasket 102 comprises a fiber-based material, and this fiber-based material has density and compression which results in a gas permeation rate per unit surface area that is less than 22.5 mL/min/cm. At this time, the surface area is based on the inner surface area of the gasket. This fiber-based material reduces thermal cell induced blistering within the capsule and within the fusion draw machine, therefore the level of damage due to blisters is reduced.
Abstract translation:要解决的问题:处理由玻璃制造系统中的玻璃制造单元的连接引起的空气渗透引起的热电池诱发的水泡引起的损伤。 解决方案:基于纤维的垫圈102被放置在胶囊172和熔化拉伸机150之间的连接180中。基于纤维的垫圈102包括纤维基材料,并且该纤维基材料具有密度和 压缩,其导致每单位表面积的气体渗透速率小于22.5mL / min / cm 2 SP SP =“POST”> 2 SP>。 此时,表面积基于垫圈的内表面积。 这种基于纤维的材料减少了胶囊内和融合拉伸机内的热细胞引起的起泡,因此减少了由于起泡引起的损伤程度。 版权所有(C)2013,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method to prevent the formation of gaseous inclusions in glass sheets.SOLUTION: There are provided a system and method for controlling the environment (e.g. oxygen, hydrogen, humidity, temperature, gas flow rate, pressure) around one or more vessels in a glass manufacturing system. In the preferred embodiment, the system includes a closed-loop control system and a capsule that are used to control the level of hydrogen around the exterior (non glass contact surface) of the vessel(s) so as to suppress the formation of gaseous inclusions and surface blisters in glass sheets. In addition, the closed-loop control system and capsule can be used to help cool molten glass while the molten glass travels from one vessel to another vessel in the glass manufacturing system. Moreover, the closed-loop control system and capsule can be used to maintain an atmosphere with minimal oxygen around the vessel(s) so as to reduce the oxidation of precious metals on the vessel(s).
Abstract:
PROBLEM TO BE SOLVED: To reduce accelerated metal loss from the inner refractory metal of a component of a glass making system.SOLUTION: A vessel 40 includes: an inner layer 30 composed of a metal selected from the group consisting of ruthenium, rhodium, palladium, osmium, indium, platinum, rhenium, molybdenum or alloys thereof; a barrier layer 32 composed of a ceramic material adjacent to the inner layer 30; and a sacrificial metal member 50 for forming a metal oxide gas adjacent at least to a portion of the barrier layer 32, the sacrificial metal member 50 selected from the group consisting of ruthenium, rhodium, palladium, osmium, iridium, platinum, rhenium, molybdenum and alloys thereof. The majority constituent of the metal comprising the sacrificial metal member 50 is the same as the majority constituent of the metal comprising the inner layer 30.
Abstract:
Solid oxide fuel cell assemblies comprise packets of multi-cell-sheet devices based on compliant solid oxide electrolyte sheets that form a fuel chamber and support anodes interiorly and cathodes exteriorly of the chamber that can be electrically interconnected to provide a compact, high voltage power-generating unit; added frames can support the oxide sheets and incorporate fuel supply and air supply conduits or manifolds permitting stacking of the assemblies into fuel cell stacks of any required size and power-generating capacity.
Abstract:
Solid oxide fuel cell assemblies comprise packets of multi-cell-sheet devices based on compliant solid oxide electrolyte sheets that form a fuel chamber and support anodes interiorly and cathodes exteriorly of the chamber that can be electrically interconnected to provide a compact, high voltage power-generating unit; added frames can support the oxide sheets and incorporate fuel supply and air supply conduits or manifolds permitting stacking of the assemblies into fuel cell stacks of any required size and power-generating capacity.
Abstract:
A method of making glasses with manufacturing systems employing platinum or molybdenum melting, fining, delivery, or forming vessel, wherein the partial pressure of hydrogen outside the vessel is controlled or manipulated, relative to the partial pressure of hydrogen inside the platinum structure, to minimize surface blistering in the glass in contact with the platinum or molybdenum.
Abstract:
The present invention is directed toward a method of reducing contamination of a glass melt by volatilized precious metal oxides that may condense on the stirrer shaft of a stirring vessel and fall back into the glass melt, by heating the shaft. In one embodiment, the stirrer shaft includes an interior cavity and a heating element disposed within the cavity. The heating element heats the shaft to a temperature sufficient to prevent volatilized materials from condensing on the surfaces of the shaft.