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    • 5. 发明申请
    • METHOD AND APPARATUS FOR PRODUCING A CRUCIBLE OF QUARTZ GLASS
    • 用于生产QUARTZ玻璃的可溶性的方法和装置
    • WO2009146992A1
    • 2009-12-10
    • PCT/EP2009/055451
    • 2009-05-06
    • HERAEUS QUARZGLAS GMBH & CO. KGSHIN-ETSU QUARTZ PRODUCTS CO., LTD.KAYSER, ThomasLEHMANN, WalterLAUDAHN, Hilmar
    • KAYSER, ThomasLEHMANN, WalterLAUDAHN, Hilmar
    • C03B19/09
    • C30B15/10C03B19/095C30B35/002
    • The invention starts from a method for producing a crucible of quartz glass in that SiO 2 inner layer granules are vitrified in a rotating melting mold (1), which is covered at least in part by a heat shield (2), in a light gas-containing atmosphere under the action of a plasma to obtain a transparent inner layer, at least part of the light gas being supplied to the melting mold (1) through a gas inlet (8,9) of the heat shield. In order to form an inner layer with a particularly low bubble content and with minimal efforts in terms of energy and material, it is proposed that in a layer-forming step preceding the vitrifying step, a granule layer (14) of the SiO 2 inner layer granules is formed on the inner wall, and wherein the plasma zone (13) and the heat shield (2) together with the gas inlet (8,9) are movable at least in a direction perpendicular to the rotation axis and are moved laterally in the direction of the granule layer (14) during the vitrifying step so as to vitrify the granule layer (14).
    • 本发明从石英玻璃坩埚的制造方法开始,其中SiO 2内层颗粒在至少部分由隔热罩(2)覆盖的旋转熔融模具(1)中进行玻璃化, 在等离子体的作用下形成含气氛,以获得透明的内层,至少部分轻质气体通过隔热罩的气体入口(8,9)供应到熔化模具(1)。 为了形成具有特别低的气泡含量并且在能量和材料方面的最小努力的内层,提出在玻璃化步骤之前的层形成步骤中,SiO 2内层的颗粒层(14) 颗粒形成在内壁上,并且其中等离子体区域(13)和隔热罩(2)与气体入口(8,9)一起可以至少在垂直于旋转轴线的方向上移动并且横向移动 在玻璃化步骤期间颗粒层(14)的方向以使颗粒层(14)玻璃化。