C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
C03B 37/023 (2006.01) C03B 37/012 (2006.01) C03C 17/23 (2006.01)
Patent
CA 2067260
The method of manufacturing a silica glass preform comprises the steps of inserting a rod-like member mainly containing a ductile material, into a forming space of a mold, charging the remaining space of the forming space with a forming material containing silica glass powder or doped silica glass powder, compressing the mold charged with the forming material from outside such as to form a porous glass body of the forming material around the rod-like member, removing the rod-like member from the porous glass body, inserting a glass rod into the hole formed after removal of the rod-like member, purifying said porous glass body in which the glass rod is inserted, and consolidating said porous glass body purified in the above purifying step.
a méthode de fabrication d'une préforme en verre de silice consiste à insérer un élément en forme de baguette constitué principalement de matériau ductile dans la cavité de formage d'un moule, à charger l'espace restant de la cavité d'un matériau de formage comprenant de la poudre de verre de silice ou de poudre de verre de silice dopé, à comprimer, à l'aide d'une force extérieure, le moule chargé du matériau de formage de façon à former une gaine de verre poreux autour de l'élément en forme de baguette, à retirer l'élément en forme de baguette du corps de verre poreux, à insérer une baguette de verre dans l'évidement laissé par le retrait de l'élément en forme de baguette, à purifier ledit corps de verre poreux dans lequel la baguette de verre est insérée, et à maintenir ledit corps de verre poreux à l'étape de purification susmentionnée.
Enomoto Noritsugu
Hihara Hiroshi
Morikawa Takayuki
Oku Masato
Sato Tsuguo
Ridout & Maybee Llp
The Furukawa Electric Co. Ltd.
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