公开(公告)号：US08613207B2

公开(公告)日：2013-12-24

申请号：US12737302

申请日：2009-06-25

申请人： Helmut Leber ,  Rainer Berg ,  Nigel Whippey

发明人： Helmut Leber ,  Rainer Berg ,  Nigel Whippey

IPC分类号： C03B15/14

CPC分类号： C03B17/04 ,  C03B5/0336 ,  C03B5/182

摘要： In a known method for drawing a tubular quartz glass strand, SiO2-containing starting material is fed to a melting crucible, softened therein into a viscous quartz glass mass (27), and said mass is pulled vertically downward as a cylindrical quartz glass strand (5; 33) through a die (4; 34) provided in the bottom region of the melting crucible (1), said die having a gap-shaped outlet (25; 36), which is defined by a bottom opening and a die inside part, and thereafter the quartz glass cylinder is cut to length. In order to provide a method starting from this which facilitates the production of homogeneous quartz glass cylinders, even if the lateral dimensions thereof are in the range of the inside diameters of conventional melting crucibles (1), according to the invention the viscous quartz glass mass is drawn over a flow constriction (12; 32) provided in an upper region of the die (4; 34) and leading downward into the outlet (25; 36) via a flow channel, said region facing the crucible interior, wherein the outlet has an opening width that is larger than the width of the flow constriction (12; 32), and wherein a first minimum circumscribed circle around the flow constriction (12; 32) has a diameter that is a maximum of 30% of the diameter of a second minimum circumscribed circle around the quartz glass strand (5; 33) to be drawn. The invention further relates to a corresponding apparatus.

摘要翻译： 在已知的用于拉制管状石英玻璃线的方法中，将含SiO 2的起始材料供给到熔化的坩埚中，在其中软化成粘性石英玻璃块（27），并将所述物质作为圆柱形石英玻璃绞线垂直向下拉（ 5; 33）通过设置在熔化坩埚（1）的底部区域中的模具（4; 34），所述模具具有间隙形出口（25; 36），其由底部开口和模具内部限定 然后将石英玻璃圆筒切割成长度。 为了提供一种便于生产均质石英玻璃圆筒的方法，即使其横向尺寸在常规熔化坩埚（1）的内径范围内，根据本发明，粘性石英玻璃质量 被设置在模具（4; 34）的上部区域中的流动收缩部（12; 32）上，并经由流动通道向下流入出口（25; 36），所述区域面向坩埚内部，其中出口 具有大于所述流动收缩部（12; 32）的宽度的开口宽度，并且其中所述流动收缩部（12; 32）周围的第一最小限定圆的直径为所述流动收缩部（12; 32）的直径的最大值的30％ 围绕要被拉伸的石英玻璃绞线（5; 33）的第二最小外接圆。 本发明还涉及相应的装置。

公开(公告)号：US07955715B2

公开(公告)日：2011-06-07

申请号：US11642349

申请日：2006-12-20

申请人： Martin Trommer ,  Rainer Berg ,  Nigel Whippey ,  Helmut Leber ,  Joerg Becker

发明人： Martin Trommer ,  Rainer Berg ,  Nigel Whippey ,  Helmut Leber ,  Joerg Becker

IPC分类号： B32B15/04 ,  C03B37/00

CPC分类号： C03B5/1675 ,  C23C4/08 ,  C23C4/134 ,  Y10T428/12292 ,  Y10T428/12771 ,  Y10T428/1284

摘要： In a known method for coating a crucible for use at a high working temperature in a crucible drawing method for quartz glass, a base body wall of tungsten has applied thereto a protective layer containing a coating metal consisting of the group selected from iridium, rhenium, osmium and ruthenium. Starting therefrom, to provide a method for producing such a component exhibiting high corrosion resistance to the quartz glass melt at low material costs, it is suggested according to the invention that the protective layer should be produced from a layer material which contains tungsten and the coating metal, and in which the amount of the coating metal should be dimensioned such that it exceeds the limit amount of a coating metal-rich phase boundary of a solid mixture phase of tungsten and the coating metal, with the solid mixture phase being thermodynamically stable at the working temperature, by not more than 25 at. % (based on the total amount of tungsten and the coating metal in the layer material).

摘要翻译： 在用于石英玻璃的坩埚拉拔方法中用于涂覆在高工作温度下使用的坩埚的已知方法中，钨基体壁向其施加保护层，该保护层含有由选自铱，铼， 锇和钌。 从其开始，为了提供一种以低材料成本制造对石英玻璃熔体具有高耐腐蚀性的组分的方法，根据本发明，建议保护层应由含钨的层材料和涂层 金属，并且其中涂层金属的量的尺寸应使其超过钨和涂覆金属的固体混合物相的涂覆金属富集相边界的极限量，其中固体混合物相在热力学上稳定在 工作温度不超过25℃。 ％（基于钨层和层材料中涂层金属的总量）。

公开(公告)号：US20110113829A1

公开(公告)日：2011-05-19

申请号：US12737302

申请日：2009-06-25

申请人： Helmut Leber ,  Rainer Berg ,  Nigel Whippey

发明人： Helmut Leber ,  Rainer Berg ,  Nigel Whippey

IPC分类号： C03B17/04 ,  C03B5/16

CPC分类号： C03B17/04 ,  C03B5/0336 ,  C03B5/182

摘要： In a known method for drawing a tubular quartz glass strand, SiO2-containing starting material is fed to a melting crucible, softened therein into a viscous quartz glass mass (27), and said mass is pulled vertically downward as a cylindrical quartz glass strand (5; 33) through a die (4; 34) provided in the bottom region of the melting crucible (1), said die having a gap-shaped outlet (25; 36), which is defined by a bottom opening and a die inside part, and thereafter the quartz glass cylinder is cut to length. In order to provide a method starting from this which facilitates the production of homogeneous quartz glass cylinders, even if the lateral dimensions thereof are in the range of the inside diameters of conventional melting crucibles (1), according to the invention the viscous quartz glass mass is drawn over a flow constriction (12; 32) provided in an upper region of the die (4; 34) and leading downward into the outlet (25; 36) via a flow channel, said region facing the crucible interior, wherein the outlet has an opening width that is larger than the width of the flow constriction (12; 32), and wherein a first minimum circumscribed circle around the flow constriction (12; 32) has a diameter that is a maximum of 30% of the diameter of a second minimum circumscribed circle around the quartz glass strand (5; 33) to be drawn. The invention further relates to a corresponding apparatus.

摘要翻译： 在已知的用于拉制管状石英玻璃线的方法中，将含SiO 2的起始材料供给到熔化的坩埚中，在其中软化成粘性石英玻璃块（27），并将所述物质作为圆柱形石英玻璃绞线垂直向下拉（ 5; 33）通过设置在熔化坩埚（1）的底部区域中的模具（4; 34），所述模具具有间隙形出口（25; 36），其由底部开口和模具内部限定 然后将石英玻璃圆筒切割成长度。 为了提供一种便于生产均质石英玻璃圆筒的方法，即使其横向尺寸在常规熔化坩埚（1）的内径范围内，根据本发明，粘性石英玻璃质量 被设置在模具（4; 34）的上部区域中的流动收缩部（12; 32）上，并经由流动通道向下流入出口（25; 36），所述区域面向坩埚内部，其中出口 具有大于所述流动收缩部（12; 32）的宽度的开口宽度，并且其中所述流动收缩部（12; 32）周围的第一最小限定圆的直径为所述流动收缩部（12; 32）的直径的最大值的30％ 围绕要被拉伸的石英玻璃绞线（5; 33）的第二最小外接圆。 本发明还涉及相应的装置。

公开(公告)号：US20070178329A1

公开(公告)日：2007-08-02

申请号：US11642349

申请日：2006-12-20

申请人： Martin Trommer ,  Rainer Berg ,  Nigel Whippey ,  Helmut Leber ,  Joerg Becker

发明人： Martin Trommer ,  Rainer Berg ,  Nigel Whippey ,  Helmut Leber ,  Joerg Becker

IPC分类号： B05D1/36 ,  C23C4/08 ,  F01D5/18

CPC分类号： C03B5/1675 ,  C23C4/08 ,  C23C4/134 ,  Y10T428/12292 ,  Y10T428/12771 ,  Y10T428/1284

摘要： In a known method for coating a crucible for use at a high working temperature in a crucible drawing method for quartz glass, a base body wall of tungsten has applied thereto a protective layer containing a coating metal consisting of the group selected from iridium, rhenium, osmium and ruthenium. Starting therefrom, to provide a method for producing such a component exhibiting high corrosion resistance to the quartz glass melt at low material costs, it is suggested according to the invention that the protective layer should be produced from a layer material which contains tungsten and the coating metal, and in which the amount of the coating metal should be dimensioned such that it exceeds the limit amount of a coating metal-rich phase boundary of a solid mixture phase of tungsten and the coating metal, with the solid mixture phase being thermodynamically stable at the working temperature, by not more than 25 at. % (based on the total amount of tungsten and the coating metal in the layer material).

摘要翻译： 在用于石英玻璃的坩埚拉拔方法中用于涂覆在高工作温度下使用的坩埚的已知方法中，钨基体壁向其施加保护层，该保护层含有由选自铱，铼， 锇和钌。 从其开始，为了提供一种以低材料成本制造对石英玻璃熔体具有高耐腐蚀性的组分的方法，根据本发明，建议保护层应由含钨的层材料和涂层 金属，并且其中涂层金属的量的尺寸应使其超过钨和涂覆金属的固体混合物相的涂覆金属富集相边界的极限量，其中固体混合物相在热力学上稳定在 工作温度不超过25℃。 ％（基于钨层和层材料中涂层金属的总量）。

公开(公告)号：US20120174629A1

公开(公告)日：2012-07-12

申请号：US13381050

申请日：2010-06-15

申请人： Helmut Leber ,  Rainer Berg ,  Nigel Whippey

发明人： Helmut Leber ,  Rainer Berg ,  Nigel Whippey

IPC分类号： C03B17/04

CPC分类号： C03B17/04 ,  Y02P40/57

摘要： The invention relates to a known method for drawing a quartz glass cylinder from a melt crucible comprising an inner crucible chamber extending in the direction of a center crucible axis and bounded by a side wall and a floor, wherein SiO2 granulate is fed into the melt crucible and therein softened into a quartz glass mass, and said mass is drawn vertically downward as a cylindrical quartz glass strand by means of a first draw-off device through a first draw nozzle provided in the floor of the melt crucible, and the quartz glass cylinder is cut off therefrom. In order to disclose a method starting herefrom and allowing the production of homogenous quartz glass cylinder at simultaneously high levels of productivity, the invention proposes that at least one second quartz glass strand is drawn off through at least one further second draw nozzle provided in the floor of the melt crucible, wherein the first draw nozzle and the second draw nozzle are disposed eccentrically to the center crucible axis and at a distance from each other.

摘要翻译： 本发明涉及一种用于从熔融坩埚中抽取石英玻璃圆筒的公知方法，所述熔融坩埚包括沿中心坩埚轴线方向延伸并由侧壁和底板限定的内坩埚室，其中SiO 2颗粒被送入熔融坩埚 并且在其中软化成石英玻璃物质，并且所述物质通过设置在熔融坩埚的地板中的第一牵引喷嘴借助于第一牵引装置作为圆柱形石英玻璃绳垂直向下拉动，并且石英玻璃圆筒 被切断。 为了公开一种从此开始的方法，并允许以同时高的生产率生产均匀的石英玻璃圆筒，本发明提出，至少一个第二石英玻璃丝线通过设置在地板中的至少一个另外的第二个拉伸喷嘴被抽出 所述第一拉丝喷嘴和所述第二拉伸喷嘴相对于所述中心坩埚轴偏心设置并且彼此间隔一定距离。

公开(公告)号：US20090064715A1

公开(公告)日：2009-03-12

申请号：US11920370

申请日：2007-03-07

申请人： Roland Horn ,  Helmut Leber ,  Martin Trommer ,  Nigel Whippey ,  Rainer Berg ,  Joerg Becker ,  Rolf Gerhardt

发明人： Roland Horn ,  Helmut Leber ,  Martin Trommer ,  Nigel Whippey ,  Rainer Berg ,  Joerg Becker ,  Rolf Gerhardt

IPC分类号： C03B23/047

CPC分类号： C03B17/04 ,  C03B5/0336

摘要： In a known method for drawing a tubular quartz glass strand, a crucible is fed with SiO2-containing start material, the start material is softened in the crucible and, as a softened quartz glass mass, is drawn vertically downwards as a tubular quartz glass strand along a drawing axis through an annular gap between an outer member and an inner member, which is arranged in a through hole of the outer member, of a drawing nozzle provided in the bottom area of the crucible. To improve the known method with respect to less inhomogeneity in the drawn-off tubular strand and thereby to permit the manufacture of homogeneous, defect-free hollow cylinders of quartz glass by drawing from the melt, it is suggested according to the invention that the inner member of the drawing nozzle, viewed in the direction of the drawing axis, is held suspended and radially movable inside the through hole of the outer member, and that the annular gap of the drawing nozzle has a longitudinal section “L” in which its cross-sectional nozzle area is reduced in size from the top to the bottom.

摘要翻译： 在已知的用于拉制管状石英玻璃绞线的方法中，向坩埚供给含有SiO 2的起始材料，起始材料在坩埚中软化，并且作为软化石英玻璃块，作为管状石英玻璃绞线垂直向下拉 沿着图示轴线，设置在坩埚的底部区域中的设置在外部构件的通孔中的外部构件和内部构件之间的环形间隙。 为了改进已知的方法，关于拉出的管状股线中的较小的不均匀性，从而允许通过从熔体中拉拔来制造均匀的，无缺陷的石英玻璃中空圆柱体，根据本发明，建议内部 从拉伸轴方向观察的拉丝喷嘴的构件被保持在外部构件的通孔内部并可径向移动，并且拉伸喷嘴的环形间隙具有纵向截面“L”，其横截面 截面喷嘴面积从顶部到底部减小。

公开(公告)号：US20110281227A1

公开(公告)日：2011-11-17

申请号：US12998904

申请日：2009-12-09

申请人： Bernhard Franz ,  Nigel Whippey ,  Joerg Becker ,  Helmut Leber

发明人： Bernhard Franz ,  Nigel Whippey ,  Joerg Becker ,  Helmut Leber

IPC分类号： F27B14/10

CPC分类号： C03B5/43 ,  C03B5/0336 ,  C03B5/1672

摘要： In a known melting crucible for use in a crucible drawing method, it is provided that the interior face of the crucible wall facing a crucible interior space is covered at least partially with a protective layer made of a noble metal. The known melting crucible does have good corrosion resistance with respect to the quartz glass melt, but the material costs are high because of the expensive coating metals. In order to provide a melting crucible for use in a crucible drawing method for quartz glass that exhibits good corrosion resistance at low material costs, it is proposed that the protective layer (2) be composed of a gas-tight, oxidic material that is not subject to a phase transition in the temperature range of 20° C. to 1800° C., and that the crucible interior space (17) have a gas space (17) above the quartz glass mass (27) to be held, and that the protective layer (2) be provided exclusively on the surface of the melting crucible interior face adjacent to the gas space (17).

摘要翻译： 在用于坩埚拉制方法的已知的熔化坩埚中，提供了面对坩埚内部空间的坩埚壁的内表面至少部分地被贵金属制成的保护层覆盖。 已知的熔化坩埚相对于石英玻璃熔体确实具有良好的耐腐蚀性，但是由于昂贵的涂层金属，材料成本较高。 为了提供一种用于石英玻璃的坩埚拉拔方法的熔融坩埚，其在低材料成本下表现出良好的耐腐蚀性，提出保护层（2）由不是气密的氧化材料组成 在20℃至1800℃的温度范围内进行相变，并且坩埚内部空间（17）在要保持的石英玻璃块（27）的上方具有气体空间（17），并且 保护层（2）仅专门设置在与气体空间（17）相邻的熔化坩埚内表面上。