发明申请
US20100162760A1 METHOD OF PRODUCING VITREOUS SILICA CRUCIBLE 有权
生产维生素二氧化硅可溶性的方法

METHOD OF PRODUCING VITREOUS SILICA CRUCIBLE
摘要:
A method for manufacturing a quartz glass crucible has a deposition step of depositing quartz powder on an inner wall surface of a bottomed cylindrical mold, while rotating the mold, and a melting step of obtaining the quartz glass crucible by vitrifying the quartz powder deposited on the inner wall surface of the mold by heating and melting the quartz powder. In the deposition step, under a state where the quantity of electrostatic charge of the quartz powder is controlled to be within a range of 1.0 kV or below in absolute value, the quartz powder is applied to the inner wall surface of the mold, and the thickness of the quartz glass crucible is controlled by maintaining the density of the quartz powder deposition layer on the inner wall surface of the mold within a fixed range.
公开/授权文献
信息查询
0/0