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11. 发明公开

EP2844618A1 VERFAHREN ZUR HERSTELLUNG SYNTHETISCHER QUARZGLASKÖRNUNG 有权
标题翻译：方法生产合成石英玻璃砂
公开(公告)号：EP2844618A1
公开(公告)日：2015-03-11
申请号：EP13718543.5
申请日：2013-04-17
申请人： Heraeus Quarzglas GmbH & Co. KG
发明人： LEHMANN, Walter , HOFMANN, Achim , KAYSER, Thomas , ARNDT, Martin
IPC分类号： C03B19/10 , F27B7/00
CPC分类号： C03B20/00 , C03B19/1095 , C03B2201/02 , C04B35/185 , C04B35/62665 , C04B35/64 , C04B2235/5427 , C04B2235/77 , C04B2235/94 , C23C4/10 , C23C4/11 , C23C4/18 , C23C4/185 , F27B7/00 , F27B7/04 , F27B7/34
摘要： The production of a quartz glass grit comprises the granulation of pyrogenetically produced silicic acid, and the formation of a SiO
2 granulate and the vitrification of the SiO
2 granulate using a treatment gas, which contains at least 30% by volume of helium and/or hydrogen. Said process is time consuming and cost intensive. In order to provide a method which makes it possible, starting from a porous SiO
2 granulate, to manufacture, in a cost effective manner, a dense, synthetic quartz glass grit, which is suitable for melting bubble-free components made of quartz glass, according to the invention the vitrification of the SiO
2 granulate occurs in a rotary kiln having a mullite-containing ceramic rotary kiln, for the manufacture of which a starting powder, which contains a molar proportion of at least 45% SiO
2 and Al
2 O
3 is applied by means of a thermal powder spraying method, forming a mullite-containing layer on a mold core, and the mold core is subsequently removed, and wherein the ceramic rotary kiln is flooded with a treatment gas or rinsed with a treatment gas, and wherein the ceramic rotary kiln is flooded with a treatment gas or rinsed with a treatment gas, which contains at least 30% by volume of helium and/or hydrogen.

12. 发明授权

EP1497484B8 QUARZGLASTIEGEL UND VERFAHREN ZUR HERSTELLUNG DESSELBEN 有权
公开(公告)号：EP1497484B8
公开(公告)日：2007-06-13
申请号：EP03722390.6
申请日：2003-04-03
申请人： Heraeus Quarzglas GmbH & Co. KG , Siltronic AG
发明人： KORUS, Gabriele , ARNDT, Martin , LAUDAHN, Hilmar , SCHWARZBAUER, Manfred
IPC分类号： C30B15/10 , C03B19/09
CPC分类号： C30B15/10 , C03B19/095 , C03C3/06 , C03C10/0009 , C03C2201/40 , C03C2201/54 , Y10T117/10
摘要： A known quartz glass crucible for crystal pulling consists of a crucible wall, having an outer layer which is provided in an external area thereof with a crystallisation promoter which results in crystallisation of quartz glass, forming cristobalite when the quartz glass crucible is heated according to specified use in crystal pulling. The aim of the invention is to provide a quartz glass crucible which has a long service life. As a result, the crystallisation promoter contains, in addition to a silicon, a first component which acts as a reticulating agent in quartz glass and a second component which is free of alkali metals and which acts as an agent forming separating points in quartz glass. The above mentioned components are contained and incorporated into a doping area (8) of the outer layer (6) having a layer thickness of more than 0.2mm.
摘要翻译：已知的用于拉晶的石英玻璃坩埚由坩埚壁组成，该坩埚壁具有外层，在该外层的外部区域内设置促使石英玻璃结晶的结晶促进剂，当石英玻璃坩埚根据规定加热时形成方石英用于拉晶。本发明的目的是提供一种使用寿命长的石英玻璃坩埚。结果，除硅之外，结晶促进剂还包含作为石英玻璃中的成网剂的第一组分和不含碱金属的第二组分，其作为在石英玻璃中形成分离点的试剂。上述组分被包含并且并入到外层（6）的掺杂区域（8）中，其具有大于0.2mm的层厚度。

13. 发明授权

EP2834200B1 VERFAHREN ZUR HERSTELLUNG EINES FORMKÖRPERS AUS ELEKTROGESCHMOLZENEM SYNTHETISCHEM QUARZGLAS 有权
标题翻译：方法制备成型身体合成石英玻璃电熔
公开(公告)号：EP2834200B1
公开(公告)日：2017-01-18
申请号：EP13712545.6
申请日：2013-03-26
申请人： Heraeus Quarzglas GmbH & Co. KG
发明人： LEHMANN, Walter , KAYSER, Thomas , ARNDT, Martin , HOFMANN, Achim
IPC分类号： C03B20/00 , C03B5/033 , C03B19/10
CPC分类号： C03B20/00 , C03B5/033 , C03B5/0336 , C03B19/108 , C03B19/1095 , Y02P40/57

14. 发明公开

EP2834200A1 VERFAHREN ZUR HERSTELLUNG EINES FORMKÖRPERS AUS ELEKTROGESCHMOLZENEM SYNTHETISCHEM QUARZGLAS 有权
标题翻译： VERFAHREN ZUR HERSTELLUNG EINESFORMKÖRPERSAUS ELEKTROGESCHMOLZENEM SYNTHETISCHEM QUARZGLAS
公开(公告)号：EP2834200A1
公开(公告)日：2015-02-11
申请号：EP13712545.6
申请日：2013-03-26
申请人： Heraeus Quarzglas GmbH & Co. KG
发明人： LEHMANN, Walter , KAYSER, Thomas , ARNDT, Martin , HOFMANN, Achim
IPC分类号： C03B20/00 , C03B5/033 , C03B19/10
CPC分类号： C03B20/00 , C03B5/033 , C03B5/0336 , C03B19/108 , C03B19/1095 , Y02P40/57
摘要： In a known method for producing a mold body from synthetic quartz glass, quartz glass granules (15) are heated in an electrically heated melt container (31) to form a softened quartz glass mass (57), and the softened quartz glass mass (57) is formed to the mold body. In order to achieve an advantageous melting behavior also in continuous melting processes, it is proposed according to the invention that synthetically produced quartz glass granules (15) of granular particles are used in which helium is enclosed, wherein said quartz glass granules (15) are produced by granulating pyrogenically produced silicic acid with the formation of a SiO
2 granulate (9) and subsequent vitrification of the SiO
2 granulate in a rotary kiln (1), which has a rotary tube (6) which is at least partially made of a ceramic material, and under a treatment gas that contains at least 30% by volume of helium.
摘要翻译：在从合成石英玻璃制造模具体的已知方法中，将石英玻璃颗粒（15）在电加热熔融容器（31）中加热以形成软化石英玻璃块（57），并将软化的石英玻璃块（57 ）形成在模具体上。为了在连续熔融过程中也实现有利的熔融行为，根据本发明提出，使用合成生产的颗粒颗粒的石英玻璃颗粒（15），其中包封氦气，其中所述石英玻璃颗粒（15）为通过在形成SiO 2颗粒（9）中造粒热解产生的硅酸并随后在回转窑（1）中玻璃化SiO 2颗粒而制备，旋转窑（1）具有至少部分由陶瓷材料制成的旋转管（6）并且在含有至少30体积％的氦的处理气体下。

15. 发明公开

EP1370495A1 VERFAHREN ZUR HERSTELLUNG EINES QUARZGLASTIEGELS 有权
标题翻译：用于生产石英玻璃坩埚
公开(公告)号：EP1370495A1
公开(公告)日：2003-12-17
申请号：EP02748301.5
申请日：2002-03-05
申请人： Heraeus Quarzglas GmbH & Co. KG
发明人： KORUS, Gabriele , LAUDAHN, Hilmar , ARNDT, Martin , GERTIG, Udo
IPC分类号： C03B19/09 , C30B15/10 , C03C10/00
CPC分类号： C30B35/002 , C03B19/095 , C03C10/0009 , C30B15/10
摘要： The invention relates to a method for producing a quartz glass crucible, according to which at least part of a crucible base body is provided with an interior layer, in which the formation of cristobalite is induced using a crystallisation promoter. Based on said method, the aim of the invention is to provide a cost-effective method for producing quartz-glass crucibles with reproducible characteristics and a long service life. To achieve this, the crystallisation promoter and a substance with a reductive action are introduced into the interior layer.

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