Resistance furnace with tubular heating element
    11.
    发明授权
    Resistance furnace with tubular heating element 有权
    电阻炉带管状加热元件

    公开(公告)号:US07006552B2

    公开(公告)日:2006-02-28

    申请号:US10502485

    申请日:2002-01-24

    IPC分类号: F27D7/06

    摘要: A resistance furnace has a tubular heating element with a vertically-oriented longitudinal axis. The heating element has a shell surface defined by an upper side and a lower side and surrounding a furnace chamber. The heating element is connected to at least two supply terminals by which heating current is introduced at power supply points into the heating element. The supply terminals include a surrounding upper annular collar adjacent the upper side of the shell surface, and also a surrounding lower annular collar adjacent the lower side of the shell surface.

    摘要翻译: 电阻炉具有垂直取向的纵向轴线的管状加热元件。 加热元件具有由上侧和下侧限定的围绕炉室的外壳表面。 加热元件连接至至少两个供电端子,加热电流通过该供电端子在供电点处引入加热元件。 供电端子包括邻近壳体表面的上侧的周围的上部环形环,以及邻近壳体表面的下侧的周围的下部环形环。

    Method For Producing Tubes Of Quartz Glass
    12.
    发明申请
    Method For Producing Tubes Of Quartz Glass 失效
    生产石英玻璃管的方法

    公开(公告)号:US20080041112A1

    公开(公告)日:2008-02-21

    申请号:US11665373

    申请日:2005-09-22

    IPC分类号: C03B23/047 C03B37/075

    摘要: In a known method for producing tubes of quartz glass, a hollow cylinder (2) of quartz glass is continuously supplied to a heating zone (1) and is softened therein in regions, and a tube strand (21) is drawn off at a drawing speed from the softened region with formation of a drawing bulb (26), and the tubes to be produced are cut to length in the form of tube strand pieces by separating the tube strand (21) at a desired separation point (T, Vu, Vo) and an internal pressure differing from the external pressure applied to the outer cladding is maintained in the inner bore (4) of the hollow cylinder (2) in that the inner bore (4) of the tube strand is provided with a flow obstacle. Starting therefrom to indicate a simple method which permits the manufacture of particularly large volume quartz glass tubes with utmost precision, while observing narrow tolerances, it is suggested according to the invention that the flow obstacle should be configured as a constriction (28, 29) of the inner bore which is produced by softening and plastic deformation of the tube strand in the area of a deformation zone (Vu, Vo).

    摘要翻译: 在生产石英玻璃管的已知方法中,将石英玻璃的中空圆柱体(2)连续地供应到加热区(1),并在其中被软化,并且在图中抽出管股(21) 通过形成拉丝灯泡(26)从软化区域的速度,并且通过在期望的分离点(T,Vu,V)处将管束(21)分离,将待生产的管子以管束片的形式切割成长度, Vo),并且在中空圆柱体(2)的内孔(4)中保持与施加到外包层的外部压力不同的内部压力,因为管束的内孔(4)设置有流动障碍物 。 从此开始,指出了一种简单的方法,其允许以极高的精度制造特别大体积的石英玻璃管,同时观察到窄的公差,根据本发明,建议流动障碍物应当被配置为收缩(28,29) 内径是通过在变形区域(Vu,Vo)的区域中的软管和塑料变形而产生的。

    SYNTHETIC SILICA GLASS TUBE FOR THE PRODUCTION OF A PREFORM
    13.
    发明申请
    SYNTHETIC SILICA GLASS TUBE FOR THE PRODUCTION OF A PREFORM 审中-公开
    合成二氧化硅玻璃管用于生产预制物

    公开(公告)号:US20100260949A1

    公开(公告)日:2010-10-14

    申请号:US12820001

    申请日:2010-06-21

    IPC分类号: B32B1/08 C03C15/00

    摘要: Known synthetic quartz glass tubes for the production of a preform have an inner bore with a surface layer produced without using tools in the molten state and an inner zone. The aim of the invention is to provide a tube which does not release any OH groups to the surroundings. For this purpose, the surface layer (30) has a thickness of 10 μm and an average OH content of not more than 5 ppm by weight and an average surface roughness Ra of not more than 0.1 μm. The inner zone (34) that starts on the surface layer (30) and terminates 10 μm before the outer wall has an average OH content of not more than 0.2 ppm by weight. A simple and inexpensive method for producing a quartz tube of the above type is to continuously draw a tube strand from a softened quartz glass mass in a vertical drawing process. A scavenging gas is circulated through the inner bore of the tube, said gas having a water content of less than 100 ppb per weight. The front end of the tube strand (19) is closed by a flow obstacle (26) that is permeable the scavenging gas and that reduces the amount of scavenging gas (23) flowing through.

    摘要翻译: 用于生产预成型件的已知的合成石英玻璃管具有内孔,其具有在不使用处于熔融状态的工具和内部区域的情况下制备的表面层。 本发明的目的是提供一种不会向周围释放任何OH基团的管。 为此,表面层(30)的厚度为10μm,平均OH含量为5重量ppm以下,平均表面粗糙度Ra为0.1μm以下。 在表层(30)上开始并在外壁之前终止10μm的内部区域(34)具有不大于0.2重量ppm的平均OH含量。 用于生产上述类型的石英管的简单和便宜的方法是在垂直拉伸过程中连续地从软化的石英玻璃块抽取管束。 清除气体通过管的内孔循环,所述气体的含水量小于100ppb /重量。 管股(19)的前端由能够吸收清除气体的流动障碍物(26)封闭,并减少流过的清除气体(23)的量。

    Method for production of an optical component made from quartz glass
    14.
    发明授权
    Method for production of an optical component made from quartz glass 有权
    由石英玻璃制成的光学部件的制造方法

    公开(公告)号:US07681416B2

    公开(公告)日:2010-03-23

    申请号:US10565134

    申请日:2004-07-18

    IPC分类号: C03B37/012 C03B37/02

    摘要: The production of an optical component from quartz glass, by elongation of a coaxial arrangement of a core rod and a hollow cylinder of a given length, is known. The arrangement is thus introduced into a heating zone with a vertical orientation, such that the lower end begins to partly soften and the component is drawn downwards from the softened part. The hollow cylinder has an inner passage, provided with a restriction in the region of the lower end thereof, on which the core rod is supported. Several methods are disclosed for formation of the restriction in which the inner passage (55) is mechanically machined to a final dimension and, in one version of the method, the restriction in the inner passage (55) is generated by means of softening the lower end face of the hollow cylinder, swaged against a tool and thus folded inwards with formation of a peripheral bead ring.

    摘要翻译: 已知通过芯棒的同轴布置和给定长度的中空圆柱体从石英玻璃生产光学部件。 因此,该布置被引入具有垂直取向的加热区域,使得下端开始部分软化,并且部件从软化部分向下拉。 中空圆筒具有内部通道,在其下端的区域中设置有限制,其上支撑有芯棒。 公开了几种用于形成限制的方法,其中内部通道(55)被机械加工到最终尺寸,并且在该方法的一种形式中,内部通道(55)中的限制是通过软化下部 中空圆筒的端面,相对于工具进行锻压,从而向内折叠,形成周边的胎圈环。

    Synthetic silica glass tube for the production of a preform, method for producing the same in a vertical drawing process and use of said tube
    15.
    发明申请
    Synthetic silica glass tube for the production of a preform, method for producing the same in a vertical drawing process and use of said tube 审中-公开
    用于生产预成型件的合成石英玻璃管,用于在垂直拉伸工艺中制造其的方法和所述管的使用

    公开(公告)号:US20060191294A1

    公开(公告)日:2006-08-31

    申请号:US10550049

    申请日:2004-03-19

    IPC分类号: C03B37/025 C03B37/02

    摘要: Known synthetic quartz glass tubes for the production of a preform have an inner bore with a surface layer produced without using tools in the molten state and an inner zone. The aim of the invention is to provide a tube which does not release any OH groups to the surroundings. For this purpose, the surface layer (30) has a thickness of 10 μm and an average OH content of not more than 5 ppm by weight and an average surface roughness Ra of not more than 0.1 μm. The inner zone (34) that starts on the surface layer (30) and terminates 10 μm before the outer wall has an average OH content of not more than 0.2 ppm by weight. A simple and inexpensive method for producing a quartz tube of the above type is to continuously draw a tube strand from a softened quartz glass mass in a vertical drawing process. A scavenging gas is circulated through the inner bore of the tube, said gas having a water content of less than 100 ppb per weight. The front end of the tube strand (19) is closed by a flow obstacle (26) that is permeable the scavenging gas and that reduces the amount of scavenging gas (23) flowing through.

    摘要翻译: 用于生产预成型件的已知的合成石英玻璃管具有内孔,其具有在不使用处于熔融状态的工具和内部区域的情况下制备的表面层。 本发明的目的是提供一种不会向周围释放任何OH基团的管。 为此,表面层(30)的厚度为10μm,平均OH含量为5重量ppm以下,平均表面粗糙度R a a为0.1μm以下。 在表层(30)之前开始并在外壁具有不大于0.2重量ppm的平均OH含量之前终止10um的内部区域(34)。 用于生产上述类型的石英管的简单和便宜的方法是在垂直拉伸过程中连续地从软化的石英玻璃块抽取管束。 清除气体通过管的内孔循环,所述气体的含水量小于100ppb /重量。 管股(19)的前端由能够吸收清除气体的流动障碍物(26)封闭,并减少流过的清除气体(23)的量。

    method for production of an optical component made from quartz glass and hollow cylinder made from quartz glass for carrying out said method
    16.
    发明申请
    method for production of an optical component made from quartz glass and hollow cylinder made from quartz glass for carrying out said method 有权
    由石英玻璃制造的光学部件的制造方法和由石英玻璃制成的中空圆筒,用于实施所述方法

    公开(公告)号:US20060174659A1

    公开(公告)日:2006-08-10

    申请号:US10565134

    申请日:2004-07-18

    IPC分类号: C03B37/027

    摘要: The production of an optical component from quartz glass, by elongation of a coaxial arrangement of a core rod and a hollow cylinder of a given length, is known. The arrangement is thus introduced into a heating zone with a vertical orientation, such that the lower end begins to partly soften and the component is drawn downwards from the softened part. The hollow cylinder has an inner passage, provided with a restriction in the region of the lower end thereof, on which the core rod is supported. Several methods are disclosed for formation of the restriction in which the inner passage (55) is mechanically machined to a final dimension and, in one version of the method, the restriction in the inner passage (55) is generated by means of softening the lower end face of the hollow cylinder, swaged against a tool and thus folded inwards with formation of a peripheral bead ring.

    摘要翻译: 已知通过芯棒的同轴布置和给定长度的中空圆柱体从石英玻璃生产光学部件。 因此,该布置被引入具有垂直取向的加热区域,使得下端开始部分软化,并且部件从软化部分向下拉。 中空圆筒具有内部通道,在其下端的区域中设置有限制,其上支撑有芯棒。 公开了几种用于形成限制的方法,其中内部通道(55)被机械加工到最终尺寸,并且在该方法的一种形式中,内部通道(55)中的限制是通过软化下部 中空圆筒的端面,相对于工具进行锻压,从而向内折叠,形成周边的胎圈环。

    Method for producing tubes of quartz glass
    17.
    发明授权
    Method for producing tubes of quartz glass 失效
    石英玻璃管生产方法

    公开(公告)号:US07797965B2

    公开(公告)日:2010-09-21

    申请号:US11665373

    申请日:2005-09-22

    摘要: In a known method for producing tubes of quartz glass, a hollow cylinder (2) of quartz glass is continuously supplied to a heating zone (1) and is softened therein in regions, and a tube strand (21) is drawn off at a drawing speed from the softened region with formation of a drawing bulb (26), and the tubes to be produced are cut to length in the form of tube strand pieces by separating the tube strand (21) at a desired separation point (T, Vu, Vo) and an internal pressure differing from the external pressure applied to the outer cladding is maintained in the inner bore (4) of the hollow cylinder (2) in that the inner bore (4) of the tube strand is provided with a flow obstacle. Starting therefrom to indicate a simple method which permits the manufacture of particularly large volume quartz glass tubes with utmost precision, while observing narrow tolerances, it is suggested according to the invention that the flow obstacle should be configured as a constriction (28, 29) of the inner bore which is produced by softening and plastic deformation of the tube strand in the area of a deformation zone (Vu, Vo).

    摘要翻译: 在生产石英玻璃管的已知方法中,将石英玻璃的中空圆柱体(2)连续地供应到加热区(1),并在其中被软化,并且在图中抽出管股(21) 通过形成拉丝灯泡(26)从软化区域的速度,并且通过在期望的分离点(T,Vu,V)处将管束(21)分离,将待生产的管子以管束片的形式切割成长度, Vo),并且在中空圆柱体(2)的内孔(4)中保持与施加到外包层的外部压力不同的内部压力,因为管束的内孔(4)设置有流动障碍物 。 从此开始,指出了一种简单的方法,其允许以极高的精度制造特别大体积的石英玻璃管,同时观察到窄的公差,根据本发明,建议流动障碍物应当被配置为收缩(28,29) 内径是通过在变形区域(Vu,Vo)的区域中的软管和塑料变形而产生的。