Sintering device of loose body optical fiber prefabricated rod
A technology of optical fiber preform and sintering device, which is applied in the direction of manufacturing tools, glass molding, glass manufacturing equipment, etc., can solve the problems of uneven length direction, failure of heating element, and misalignment, etc., so as to reduce the increase of loss and ensure Uniformity, concentricity improvement effect
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[0043] Specific example one:
[0044]The loose body preform 14 after external deposition is vertically suspended on the hanging rod 12 of the sintering tower, and the soot body preform is slowly put into the sintering tube 18 by the lifting and translation of the servo motor 1; into the sintering tube, and place it on the sintering area of the heating device, and cover the upper part of the sintering tube with a cover 19 to form a relatively closed sintering atmosphere; the control device 7 controls the heating element 15 through the electric heater driving part 6 to control the furnace temperature The temperature rises to 1100°C, and at the same time, gases such as 0.35splm chlorine gas and 35slpm helium gas are introduced into the sintering tube from the gas supply part 11 for dehydration. The proportion of gas is controlled at 1%; the dehydration time is 1 hour. After the end, the electric heater driving part 6 controls the heating element 15 to raise the furnace temperat...
Example Embodiment
[0045] Specific example two:
[0046] The loose body preform 14 after external deposition is vertically suspended on the hanging rod 12 of the sintering tower, and the soot body preform is slowly put into the sintering tube 18 by the lifting and translation of the servo motor 1; into the sintering tube, and place it on the sintering area of the heating device, and cover the upper part of the sintering tube with a cover 19 to form a relatively closed sintering atmosphere; the control device 7 controls the heating element 15 through the electric heater driving part 6 to control the furnace temperature The temperature rises to 1200°C, and at the same time, gases such as 0.6 splm chlorine and 25 slpm helium are introduced into the sintering tube from the gas supply unit 11 for dehydration. The proportion of gas is controlled at 2.3%; the dehydration time is 0.75 hours. After the end, the electric heater driving part 6 controls the heating element 15 to raise the furnace temperat...
Example Embodiment
[0047] Specific example three:
[0048] The loose body preform 14 after external deposition is vertically suspended on the hanging rod 12 of the sintering tower, and the soot body preform is slowly put into the sintering tube 18 by the lifting and translation of the servo motor 1; into the sintering tube, and place it on the sintering area of the heating device, and cover the upper part of the sintering tube with a cover 19 to form a relatively closed sintering atmosphere; the control device 7 controls the heating element 15 through the electric heater driving part 6 to control the furnace temperature The temperature rises to 1200°C, and at the same time, gases such as 10 splm chlorine gas and 20 slpm helium gas are introduced into the sintering tube from the gas supply part 11 for dehydration. The dehydration time is 0.5 hours. After the end, the electric heater driving part 6 controls the heating element 15 to raise the furnace temperature to 1550 ° C; the control device 7...
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