公开(公告)号：US20100307197A1

公开(公告)日：2010-12-09

申请号：US12801378

申请日：2010-06-04

申请人： Stefan Ochs ,  Steffen Zwarg ,  Mirko Wittrin ,  Martin Trommer

发明人： Stefan Ochs ,  Steffen Zwarg ,  Mirko Wittrin ,  Martin Trommer

IPC分类号： C03B37/018

CPC分类号： C03B19/01 ,  C03B19/1453 ,  C03B37/01446 ,  C03B2201/04

摘要： A known method for producing synthetic quartz glass comprises the method steps: (a) forming a cylindrical SiO2 soot body having an inner portion and at least one free cylinder jacket surface surrounding the inner portion; (b) thermally drying the porous soot body; and (c) vitrifying the dried soot body with formation of the cylinder from synthetic quartz glass. Starting therefrom, to indicate a method which permits a particularly flat radial distribution in the inner portion of the cylinder, it is suggested according to the invention that the dried SiO2 soot body that is present after method step b) should be subjected to a homogenizing method prior to vitrification, the homogenizing method comprising the following steps: (I) heating the soot body to a consolidation temperature to form a sealing layer in the area of the at least one cylinder jacket, the sealing layer sealing the inner portion to the outside; (II) cooling the soot body from the consolidation temperature; and (III) annealing the soot body in the range of a homogenization temperature during a period of at least 5 hours so that the radial profile of the hydroxyl group concentration flattens in the inner portion.

摘要翻译： 用于生产合成石英玻璃的已知方法包括以下方法步骤：（a）形成具有内部部分和围绕内部部分的至少一个自由圆筒形护套表面的圆柱形SiO 2烟灰体; （b）热干燥多孔烟炱体; 和（c）通过合成石英玻璃形成圆筒来使干燥的烟灰体玻璃化。 从此开始，为了表示允许气缸内部特别平坦的径向分布的方法，根据本发明，建议在方法步骤b）之后存在的干燥的SiO 2烟炱体应经受均匀化方法 在玻璃化之前，均化方法包括以下步骤：（I）将烟灰体加热至固化温度，以在至少一个气缸套的区域中形成密封层，密封层将内部部分密封到外部; （II）从固结温度冷却烟灰体; 和（III）在均匀化温度范围内在至少5小时的时间内使烟灰体退火，使得羟基浓度的径向分布在内部变平。

公开(公告)号：US08245542B2

公开(公告)日：2012-08-21

申请号：US12801378

申请日：2010-06-04

申请人： Stefan Ochs ,  Steffen Zwarg ,  Mirko Wittrin ,  Martin Trommer

发明人： Stefan Ochs ,  Steffen Zwarg ,  Mirko Wittrin ,  Martin Trommer

IPC分类号： C03B37/018

CPC分类号： C03B19/01 ,  C03B19/1453 ,  C03B37/01446 ,  C03B2201/04

摘要： A known method for producing synthetic quartz glass comprises the method steps: (a) forming a cylindrical SiO2 soot body having an inner portion and at least one free cylinder jacket surface surrounding the inner portion; (b) thermally drying the porous soot body; and (c) vitrifying the dried soot body with formation of the cylinder from synthetic quartz glass. Starting therefrom, to indicate a method which permits a particularly flat radial distribution in the inner portion of the cylinder, it is suggested according to the invention that the dried SiO2 soot body that is present after method step b) should be subjected to a homogenizing method prior to vitrification, the homogenizing method comprising the following steps: (I) heating the soot body to a consolidation temperature to form a sealing layer in the area of the at least one cylinder jacket, the sealing layer sealing the inner portion to the outside; (II) cooling the soot body from the consolidation temperature; and (III) annealing the soot body in the range of a homogenization temperature during a period of at least 5 hours so that the radial profile of the hydroxyl group concentration flattens in the inner portion.

摘要翻译： 用于生产合成石英玻璃的已知方法包括以下方法步骤：（a）形成具有内部部分和围绕内部部分的至少一个自由圆筒形护套表面的圆柱形SiO 2烟灰体; （b）热干燥多孔烟炱体; 和（c）通过合成石英玻璃形成圆筒来使干燥的烟灰体玻璃化。 从此开始，为了表示允许气缸内部特别平坦的径向分布的方法，根据本发明，建议在方法步骤b）之后存在的干燥的SiO 2烟炱体应经受均匀化方法 在玻璃化之前，均化方法包括以下步骤：（I）将烟灰体加热至固化温度，以在至少一个气缸套的区域中形成密封层，密封层将内部部分密封到外部; （II）从固结温度冷却烟灰体; 和（III）在均匀化温度范围内在至少5小时的时间内使烟灰体退火，使得羟基浓度的径向分布在内部变平。