摘要:
In accordance with the present invention, a system and method for the automated casting of infrared glass optical components is provided. The system includes a mold for casting infrared glass into lenses, a mold chamber operable to heat the mold to a temperature above the melting temperature of the infrared glass, and a casting chamber operable to fill the mold with molten infrared glass. The method includes heating a mold in a mold chamber (70) to a temperature above the melting temperature of infrared glass, casting molten infrared glass into the mold in a casting chamber (71); and cooling the mold to a temperature below the glass transition temperature of the infrared glass.
摘要:
A system and method for preparing chalcogenide glass are provided that allow for larger quantities of glass to be produced with lower production costs and less risks of environmental hazards. The system includes a reaction container operable to hold chalcogenide glass constituents during a glass formation reaction, a stirring rod operable to mix the contents of the reaction container, a thermocouple operable to measure the temperature inside the reaction container, and a reaction chamber operable to hold the reaction container. The method includes placing chalcogenide glass constituents in a reaction container, heating the chalcogenide glass constituents above the melting point of at least one of the constituents, promoting dissolving or reaction of the other constituents, stirring the reaction melt, maintaining an overpressure of at least one atmosphere over the reaction melt, and cooling the reaction melt to below the chalcogenide glass transition temperature.
摘要:
Refractory glass - forming tools, including a glass - forming mold (10) incorporating a protective metal nitride surface coating (14), with an optional alumina barrier layer (12) disposed between the mold body and coating for high - temperature nitride coating stability, offering particular advantages for the manufacture by direct molding of optically finished glass products such as information display cover glasses from refractory alkali aluminosilicate glasses at molding temperatures up to and above 800 °C.
摘要:
A mold for molding a glass member, wherein the pressing face is formed of a boron composite ceramic composed of (A) at least one M1B ceramic phase (wherein M1 is at least one member selected from among Ni, Cr, V, Nb, Ta, Mo, W and Mn) having an M1/B atomic ratio of 1/1 and (B) at least one group IV metal diboride ceramic phase selected from among TiB¿2?, ZrB2 and HfB2 and/or (Cr, Ni)3B4 ceramic phase, and being excellent in the durability, releasability, molding precision, productivity, etc., and applicable to the molding of a wide variety of glasses.
摘要:
In a mould for use in the direct press moulding of optical glass to form optical elements, the pressing surface of the mould is formed of a material comprising a-silicon carbide and/ or amorphous silicon carbide.
摘要:
A system and method for preparing chalcogenide glass are provided that allow for larger quantities of glass to be produced with lower production costs and less risks of environmental hazards. The system includes a reaction container operable to hold chalcogenide glass constituents during a glass formation reaction, a stirring rod operable to mix the contents of the reaction container, a thetmocouple operable to measure the temperature inside the reaction container, and a reaction chamber operable to hold the reaction container. The method includes placing chalcogenide glass constituents in a reaction container, heating the chalcogenide glass constituents above the melting point of at least one of the constituents, promoting dissolving or reaction of the other constituents, stirring the reaction melt, maintaining an overpressure of at least one atmosphere over the reaction melt, and cooling the reaction melt to below the chalcogenide glass transition temperature.
摘要:
A mold for molding a glass member, wherein the pressing face is formed of a boron composite ceramic composed of (A) at least one M1B ceramic phase (wherein M1 is at least one member selected from among Ni, Cr, V, Nb, Ta, Mo, W and Mn) having an M1/B atomic ratio of 1/1 and (B) at least one group IV metal diboride ceramic phase selected from among TiB¿2?, ZrB2 and HfB2 and/or (Cr, Ni)3B4 ceramic phase, and being excellent in the durability, releasability, molding precision, productivity, etc., and applicable to the molding of a wide variety of glasses.