Method for producing optical glass
    21.
    发明授权
    Method for producing optical glass 有权
    光学玻璃的制造方法

    公开(公告)号:US07437893B2

    公开(公告)日:2008-10-21

    申请号:US10504876

    申请日:2003-02-18

    Abstract: This invention provides a method for manufacturing an optical glass in order to prevent the deterioration of the burner used in the synthesis of glass particles that form the optical glass, and to obtain a stable quality optical glass. In this invention, the number of residual bubbles with a diameter of 0.3 mm and more is 0.005/cm3 or less per unit volume of the optical glass. Such optical glass is obtained by controlling the temperature of an end face of the burner for glass synthesis during the deposition of the glass particles by regulating the relationship of the flow velocity or the flow volume between an inflammable gas and a combustion-supporting gas.

    Abstract translation: 本发明提供一种制造光学玻璃的方法,以防止在形成光学玻璃的玻璃颗粒的合成中所使用的燃烧器的劣化,并获得稳定质量的光学玻璃。 在本发明中,每单位体积的光学玻璃的直径为0.3mm以上的残留气泡的数量为0.005 / cm 3以下。 这样的光学玻璃是通过调节在可燃性气体和助燃气体之间的流动速度或流量之间的关系来控制玻璃粒子沉积时的玻璃合成用燃烧器的端面的温度而得到的。

    Opaque silica glass article having transparent portion and process for producing same
    22.
    发明授权
    Opaque silica glass article having transparent portion and process for producing same 有权
    具有透明部分的不透明二氧化硅玻璃制品及其制造方法

    公开(公告)号:US06312775B1

    公开(公告)日:2001-11-06

    申请号:US09173685

    申请日:1998-10-16

    Abstract: An opaque silica glass article comprising a transparent portion and an opaque portion, wherein the opaque portion has an apparent density of 1.70-2.15 g/cm3 and contains 5×104−5×106 bubbles per cm3, said bubbles having an averaged diameter of 10-100 &mgr;m; and the transparent portion has an apparent density of 2.19-2.21 g/cm3 and the amount of bubbles having a diameter of at least 100 &mgr;m in the transparent portion is not more than 1×103 per cm3. The opaque silica glass article is made by a process wherein a mold is charged with a raw material for forming the opaque portion, which is a mixture comprising a silica powder with a small amount of a silicon nitride powder, and a raw material for forming the transparent portion so that the two raw materials are located in the positions corresponding to the opaque and the transparent portions, respectively, of the silica glass article to be produced; and the raw materials are heated in vacuo to be thereby vitrified.

    Abstract translation: 一种不透明的石英玻璃制品,其包括透明部分和不透明部分,其中所述不透明部分的表观密度为1.70-2.15g / cm 3,并且每立方厘米含有5×10 4至5×10 6个气泡,所述气泡具有10-100μm的平均直径; 并且透明部分的表观密度为2.19-2.21g / cm 3,透明部分中直径至少为100μm的气泡量不超过1×103 / cm3。 不透明的石英玻璃制品通过以下方法制造,其中模具装有用于形成不透明部分的原料,该不透明部分是包含少量氮化硅粉末的二氧化硅粉末的混合物,以及用于形成 透明部分,使得两个原料分别位于与待制造的石英玻璃制品的不透明部分和透明部分相对应的位置; 并将原料真空加热,从而玻璃化。

    Phase separatable borosilicate glass compositions
    23.
    发明授权
    Phase separatable borosilicate glass compositions 失效
    相分离硼硅酸盐玻璃组合物

    公开(公告)号:US3972720A

    公开(公告)日:1976-08-03

    申请号:US562064

    申请日:1975-03-26

    Abstract: Thermally stable, mechanically strong microporous glass articles with large pore volumes, surface areas, and varying pore sizes, and methods for making such articles are disclosed. In particle form, such as beads, the microporous glass articles are useful as catalyst supports in applications such as petroleum catalytic refiners, chemical processes and motor vehicle catalytic mufflers. The mechanical strength and the dimensional stability of the microporous glass articles at elevated temperatures can be improved if the articles are preshrunk, such as by brief exposure to high temperatures, before their intended use, and can be improved even further if treated with certain metal oxides.

    Abstract translation: 公开了具有大孔体积,表面积和不同孔径的热稳定的机械强度微孔玻璃制品及其制造方法。 在颗粒形式如珠粒中,微孔玻璃制品可用作催化剂载体,例如石油催化精炼机,化学工艺和汽车催化消声器。 如果在预期的使用之前,如在短时间暴露于高温下预制物品,则可以提高微孔玻璃制品在高温下的机械强度和尺寸稳定性,并且如果用某些金属氧化物 。

    Process for manufacture of a component made of opaque synthetic quartz glass
    27.
    发明授权
    Process for manufacture of a component made of opaque synthetic quartz glass 有权
    制造由不透明的合成石英玻璃制成的部件的方法

    公开(公告)号:US06684664B2

    公开(公告)日:2004-02-03

    申请号:US09839795

    申请日:2001-04-20

    Abstract: A process for manufacture of a component made of opaque synthetic quartz glass, and a quartz glass tube manufactured according to said process. The process comprises (i) providing a starting material in the form of granulated material of highly pure, synthetic SiO2 comprising at least partially porous agglomerates of SiO2 primary particles, the granulated material having a compacted bulk density of no less than 0.8 g/cm3, (ii) filling the granulated material into a mold and converting it to an opaque quartz glass preform through a process of melting, and (iii) reshaping the preform in a heat reshaping process to obtain a component made of opaque quartz glass. A quartz glass tube is made of quartz glass consisting of a granulated material of synthetic SiO2 with a lithium content of no more than 100 wt-ppb, and the wall thickness of said component being in the range of 0.5 mm to 15 mm.

    Abstract translation: 一种制造由不透明的合成石英玻璃制成的部件的方法,以及根据所述方法制造的石英玻璃管。 该方法包括(i)提供高纯度合成SiO 2的造粒材料形式的起始材料,其包含SiO 2一次颗粒的至少部分多孔附聚物,所述造粒材料的压实堆积密度不小于0.8g / 3),(ii)将造粒材料填充到模具中并通过熔融过程将其转化为不透明的石英玻璃预制件,和(iii)在热成型工艺中重新成形预成型件以获得由不透明石英玻璃制成的部件。 石英玻璃管由石英玻璃制成,石英玻璃由合成SiO 2的粒状材料组成,锂含量不超过100wt-ppb,所述组分的壁厚在0.5mm至15mm的范围内。

    OPAQUE SILICA GLASS ARTICLE HAVING TRANSPARENT PORTION AND PROCESS FOR PRODUCING SAME
    28.
    发明申请
    OPAQUE SILICA GLASS ARTICLE HAVING TRANSPARENT PORTION AND PROCESS FOR PRODUCING SAME 有权
    具有透明部分的OPAQUE二氧化硅玻璃制品及其制造方法

    公开(公告)号:US20020078709A1

    公开(公告)日:2002-06-27

    申请号:US09942779

    申请日:2001-08-31

    Abstract: An opaque silica glass article comprising a transparent portion and an opaque portion, wherein the opaque portion has an apparent density of 1.70-2.15 g/cm3 and contains 5null104-5null106 bubbles per cm3, said bubbles having an average diameter of 10-100 nullm; and the transparent portion has an apparent density of 2.19-2.21 g/cm3 and the amount of bubbles having a diameter of at least 100 nullm in the transparent portion is not more than 1null103 per cm3. The opaque silica glass article is made by a process wherein a mold is charged with a raw material for forming the opaque portion, which is a mixture comprising a silica powder with a small amount of a silicon nitride powder, and a raw material for forming the transparent portion so that the two raw materials are located in the positions corresponding to the opaque and the transparent portions, respectively, of the silica glass article to be produced; and the raw materials are heated in vacuo to be thereby vitrified.

    Abstract translation: 一种不透明的玻璃制品,包括透明部分和不透明部分,其中不透明部分的表观密度为1.70-2.15g / cm 3,并且每立方厘米含有5×10 4〜5×10 6个气泡,所述气泡的平均直径为10〜100μm; 并且透明部分的表观密度为2.19-2.21g / cm 3,透明部分中直径至少为100μm的气泡量不超过1×103 / cm3。 不透明的石英玻璃制品通过以下方法制造,其中模具装有用于形成不透明部分的原料,该不透明部分是包含少量氮化硅粉末的二氧化硅粉末的混合物,以及用于形成 透明部分,使得两个原料分别位于与待制造的石英玻璃制品的不透明部分和透明部分相对应的位置; 并将原料真空加热,从而玻璃化。

    Opaque silica glass article having transparent portion and process for producing same
    29.
    发明授权
    Opaque silica glass article having transparent portion and process for producing same 有权
    具有透明部分的不透明二氧化硅玻璃制品及其制造方法

    公开(公告)号:US06405563B1

    公开(公告)日:2002-06-18

    申请号:US09942779

    申请日:2001-08-31

    Abstract: An opaque silica glass article comprising a transparent portion and an opaque portion, wherein the opaque portion has an apparent density of 1.70-2.15 g/cm3 and contains 5×104-5×106 bubbles per cm3, said bubbles having an average diameter of 10-100 &mgr;m; and the transparent portion has an apparent density of 2.19-2.21 g/cm3 and the amount of bubbles having a diameter of at least 100 &mgr;m in the transparent portion is not more than 1×103 per cm. The opaque silica glass article is made by a process wherein a mold is charged with a raw material for forming the opaque portion, which is a mixture comprising a silica powder with a small amount of a silicon nitride powder, and a raw material for forming the transparent portion so that the two raw materials are located in the positions corresponding to the opaque and the transparent portions, respectively, of the silica glass article to be produced; and the raw materials are heated in vacuo to be thereby vitrified.

    Abstract translation: 一种不透明的玻璃制品,包括透明部分和不透明部分,其中不透明部分的表观密度为1.70-2.15g / cm 3,并且每立方厘米含有5×10 4〜5×10 6个气泡,所述气泡的平均直径为10〜100μm; 并且透明部分的表观密度为2.19-2.21g / cm 3,透明部分中直径至少为100μm的气泡量不超过1×10 3 / cm。 不透明的石英玻璃制品通过以下方法制造,其中模具装有用于形成不透明部分的原料,该不透明部分是包含少量氮化硅粉末的二氧化硅粉末的混合物,以及用于形成 透明部分,使得两个原料分别位于与待制造的石英玻璃制品的不透明部分和透明部分相对应的位置; 并将原料真空加热,从而玻璃化。

    Opaque quartz glass and process for production thereof
    30.
    发明授权
    Opaque quartz glass and process for production thereof 失效
    不透明石英玻璃及其生产方法

    公开(公告)号:US5972488A

    公开(公告)日:1999-10-26

    申请号:US887967

    申请日:1997-07-03

    Abstract: Opaque quartz glass is provided which contains gas bubbles uniformly dispersed therein and is excellent in high-temperature viscosity and heat-insulating property. The opaque quartz glass has a defined apparent density, contains bubbles having a defined average bubble diameter in a defined amount, has a defined total bubble sectional area, generally exhibits a defined linear transmittance at a thickness of 1 mm or larger to projected light of a defined wavelength and contains nitrogen in a defined concentration. The opaque quartz glass is produced by a process comprising packing into a mold a powdery source material of powdery silica having a defined average particle diameter and powdery silicon nitride dispersed therein in a defined amount, heating the powdery source material to one of two first defined temperature ranges (both under vacuum) and further heating the source material up to a second temperature higher than the melting point and not higher than 1900.degree. C. in a vacuum or an inert gas atmosphere for vitrification and bubble formation.

    Abstract translation: 提供了不透明石英玻璃,其包含均匀分散在其中的气泡,并且具有优异的高温粘度和绝热性能。 不透明石英玻璃具有限定的表观密度,包含具有确定的具有确定的平均气泡直径的气泡,具有确定的总气泡截面面积,通常在1mm以上的厚度下呈现出规定的线性透射率, 并含有规定浓度的氮。 不透明石英玻璃是通过一种方法生产的,该方法包括将具有确定的平均粒径的粉末二氧化硅的粉状源材料和分散在其中的粉末状氮化硅以规定的量包装在模具中,将粉末源材料加热至两个第一限定温度 范围(均为真空),并在真空或惰性气体气氛中将源材料进一步加热至高于熔点且不高于1900℃的第二温度,用于玻璃化和气泡形成。

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