发明名称 |
Manufacture of synthetic quartz glass ingot and synthetic quartz glass member |
摘要 |
A synthetic quartz glass ingot is prepared by vapor phase hydrolyzing or oxidatively decomposing a silica feedstock in a flame to form fine particles of silica, depositing the silica particles on a target and melting and vitrifying the particles to form a synthetic quartz glass ingot on the target while the target is moved back and forth. The method further comprises: (i) continuously feeding the silica feedstock at a predetermined rate, (ii) keeping the flame in constant contact with an overall growing face, (iii) cyclically repeating the back and forth movement of the target at a predetermined speed, and (iv) maintaining the shape of the growing ingot unchanged. |
申请公布号 |
EP1897859(A1) |
申请公布日期 |
2008.03.12 |
申请号 |
EP20070253534 |
申请日期 |
2007.09.07 |
申请人 |
SHIN-ETSU CHEMICAL CO., LTD. |
发明人 |
OTSUKA, HISATOSHI;SHIROTA, KAZUO;SEKIZAWA, OSAMU |
分类号 |
C03B19/14 |
主分类号 |
C03B19/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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