METHOD FOR MANUFACTURING GLASS PREFORM
To provide a method for manufacturing a glass preform that can preferably form the glass preform even when lowering a flow rate of a raw material gas in a manufacturing process.SOLUTION: A method for manufacturing a glass preform includes: a first flow rate condition comprising a first raw material...
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Main Author | |
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Format | Patent |
Language | English Japanese |
Published |
28.12.2023
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Subjects | |
Online Access | Get full text |
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Summary: | To provide a method for manufacturing a glass preform that can preferably form the glass preform even when lowering a flow rate of a raw material gas in a manufacturing process.SOLUTION: A method for manufacturing a glass preform includes: a first flow rate condition comprising a first raw material gas flow rate that is a flow rate of a raw material gas jetted from a raw material gas port and a first inert gas flow rate that is a flow rate of an inactive gas jetted from an inert gas port; and a second flow rate condition comprising a second raw material gas flow rate that is a flow rate of the raw material gas jetted from the raw material gas port and a second inert gas flow rate that is a flow rate of the inactive gas jetted from the inert gas port, where the first flow rate condition and the second flow rate condition can be switched; the first raw material gas flow rate is larger than the second raw material gas flow rate; and the first inert gas flow rate is smaller than the second inert gas flow rate.SELECTED DRAWING: Figure 3
【課題】製造工程中で原料ガスの流量を低下させることがあっても、良好にガラス母材を形成できるガラス母材の製造方法を提供する。【解決手段】本開示のガラス母材の製造方法は、原料ガスポートから噴出される原料ガスの流量である第一原料ガス流量と、不活性ガスポートから噴出される不活性ガスの流量である第一不活性ガス流量と、からなる第一流量条件と、原料ガスポートから噴出される原料ガスの流量である第二原料ガス流量と、不活性ガスポートから噴出される不活性ガスの流量である第二不活性ガス流量と、からなる第二流量条件と、を含み、第一流量条件と第二流量条件とを切り替えることが可能であり、第一原料ガス流量は第二原料ガス流量よりも大きく、第一不活性ガス流量は第二不活性ガス流量よりも小さい。【選択図】図3 |
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Bibliography: | Application Number: JP20220097897 |