C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
C03B 23/043 (2006.01) C03B 17/04 (2006.01) C03B 37/012 (2006.01) C03B 37/018 (2006.01)
Patent
CA 2488087
In a glass processing method according to the invention, in the case of performing chemical vapor deposition or diameter shrinkage of a substrate glass tube G by relatively moving a heating furnace 20 comprising a heating element 21 for annularly enclosing the circumference of the substrate glass tube in a longitudinal direction of the substrate glass tube G with respect to the substrate glass tube G in which an outer diameter is 30 mm or more and a wall thickness is 3 mm or more and is less than 15 mm and an. ovality of the outer diameter is 1.0 % or less using a glass processing apparatus 1, a temperature of at least one of the heating element 21 and the substrate glass tube G is measured and the amount of heat generation of the heating element 21 is adjusted based on the measured temperature.
Hirano Masaaki
Nakanishi Tetsuya
Onishi Masashi
Taira Nobuyuki
Yokokawa Tomoyuki
Marks & Clerk
Sumitomo Electric Industries Ltd.
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