CN102531376B - The manufacture method of base glass material and the sintering oven of manufacture base glass material - Google Patents
The manufacture method of base glass material and the sintering oven of manufacture base glass material Download PDFInfo
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- CN102531376B CN102531376B CN201110276976.8A CN201110276976A CN102531376B CN 102531376 B CN102531376 B CN 102531376B CN 201110276976 A CN201110276976 A CN 201110276976A CN 102531376 B CN102531376 B CN 102531376B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/14—Other methods of shaping glass by gas- or vapour- phase reaction processes
- C03B19/1484—Means for supporting, rotating or translating the article being formed
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Abstract
The invention provides a kind of manufacture method of base glass material and manufacture the sintering oven of base glass material, it can eliminate the portion of sintering, and prevents the excellent superheated of mother, thus avoids stretching.According to manufacturing the sintering oven of base glass material, be directly fixed on having the thermoshield fixture that can carry out the lower clamp of position adjustment on initial female rod, near taper portion lower clamp being configured in glass granules stacked body top.Thus, thermoshield can be carried out not make the heat from well heater to the mode of initial female rod conduction, therefore reliably can prevent the stretching of initial female rod.In addition, the top of glass granules stacked body can be made near well heater, therefore can reduce the region in the portion that do not sinter of the upper end of glass granules stacked body.In addition, because lower clamp in the enterprising line position adjustment of the length direction of glass granules stacked body, therefore need not can contact with glass granules stacked body, the position adjustment of heat shield plate can be carried out for each glass granules stacked body.
Description
Technical field
The present invention relates to a kind of manufacture method of the base glass material sintered in process furnace by glass granules stacked body and manufacture the sintering oven of base glass material.
Background technology
The agglomerating plant 100 shown in the application Fig. 8 is described in Japanese Unexamined Patent Publication 2000-219519 publication.Agglomerating plant 100 has: stove core barrel 106, and it has lid 109; And process furnace 105, it is configured in stove core barrel 106 around, has well heater 104.In agglomerating plant 100, the porous glass base material 111 formed by glass granules stacking in initial rod 112 inserts in stove core barrel 106, porous glass base material 111 is declined while rotation, utilizes process furnace 105 to sinter.Agglomerating plant 100 has the rare gas element ingress pipe 102 for supplying He gas etc. in the lower end of stove core barrel 106, have gas barrier 108 above stove core barrel 106.
In agglomerating plant 100, top heat shield piece 107 is set above porous glass base material 111, completes position 116 i.e. below at the sintering of porous glass base material 111 and lower heat shield 103 is set.Top heat shield piece 107 is placed on the cone 113 above porous glass base material 111, and lower heat shield 103 is fixed on stove core barrel 106.Top heat shield piece 107 and lower heat shield 103 are made up of silica glass, by being arranged on the upper and lower of porous glass base material 111, thus suppress the photothermal diffusion from cone 113, suppress temperature inequality and the natural convection of stove core barrel 106.
In the operation that porous glass base material 111 is sintered, sometimes the top of porous glass base material 111 is caused not sinter because heat does not conduct well or there occurs diffusion, or on the contrary, sometimes cause initial rod 112 to be stretched due to superheated.If the upper end of porous glass base material 111 does not sinter, then crack because the contraction between its from sintering portion is different, porous glass base material 111 may be made to drop.In addition, in the wire-drawing process of subsequent handling, likely make not sinter part be sintered, porous glass base material 111 is bending in fiber drawing furnace.In addition, also may drop due to the carbon black not sintering portion and adhere to sintering portion, so break when wire drawing.In addition, also there is following problems, that is, when flame polish, do not sintering the boundary in portion and sintering portion, causing due to the difference of coefficient of thermal expansion base glass material to rupture and drop.
In addition, if make the top superheated of porous glass base material 111, then initial rod 112 is exceedingly heated, initial rod 112 is stretched.If initial rod 112 is stretched, then the problem such as produce the bending of porous glass base material 111 or drop.In addition, porous glass base material 111 has the tendency of maximization, and weight becomes heavy, becomes the stretching that initial rod 112 easily occurs.
When porous glass base material 111 being sintered in agglomerating plant 100, before porous glass base material 111 is inserted in stove core barrel 106, must penetrate from the top of porous glass base material 111 to major general top heat shield piece 107, and be positioned on cone 113.When this installation exercise, because heat shield piece 107 contacts with soot body, so porous glass base material 111 may be scratched.In addition, in agglomerating plant 100, fixed by the setting position of porous glass base material 111 by heat shield piece 107, heat shield piece 103,107 cannot be carried out for each mother metal to adjust relative to the position of heating region, therefore, be difficult to solve completely prevent sinter time the stretching of initial rod 112 and the upper end of porous glass base material 111 do not sinter such problem.
Summary of the invention
The object of the invention is to, provide a kind of manufacture method of base glass material and manufacture the sintering oven of base glass material, it can eliminate the portion of sintering, and prevents the superheated to female rod, thus avoids stretching.
In order to realize object, the invention provides a kind of sintering oven of base glass material, it is characterized in that, comprising: (1) stove core barrel, its glass granules stacked body formed stacking glass granules on initial female rod is accommodated; (2) connecting member, glass granules stacked body is hung in stove core barrel by it; (3) process furnace, it, by the encirclement at least partially of stove core barrel, carries out heat-agglomerating to glass granules stacked body; And (4) thermoshield fixture, it is configured in the adjacent upper part of the taper stack portion on the glass granules stacked body top in stove core barrel, and thermoshield fixture can carry out position adjustment relative to glass granules stacked body on the length direction of glass granules stacked body.
Preferred thermoshield fixture is fixed on stove core barrel, connecting member or initial female rod.In addition, in embodiments, the hanging bolt that thermoshield fixture comprises upper clamp, heat shield plate and upper clamp and heat shield plate linked, upper clamp is fixed on connecting member or initial female rod, and the interval of upper clamp and heat shield plate can adjust.
As other embodiments of the present invention, a kind of manufacture method of base glass material is provided, in the method, utilize the heat from heating region, the glass granules stacked body formed stacking glass granules on initial female rod carries out heat-agglomerating, it is characterized in that, at the adjacent upper part of the taper stack portion on glass granules stacked body top, configuration can carry out the thermoshield fixture of position adjustment on the length direction of glass granules stacked body relative to glass granules stacked body, by from heating region and base glass material to while the heat shielding of initial female rod conduction, glass granules stacked body is sintered.
The effect of invention
According to the manufacture method of base glass material involved in the present invention and the sintering oven of manufacture base glass material, be configured in the adjacent upper part of the taper stack portion on glass granules stacked body top due to the thermoshield fixture that can carry out position adjustment, therefore thermoshield fixture can be adjusted to the optimum position between taper stack portion and mother's rod portion.Therefore, even if female excellent portion is to greatest extent near heating region, the heat shielding that also can reliably utilize thermoshield fixture will to conduct to side, mother excellent portion, reliably can prevent the stretching in female excellent portion, and can reduce the region in the portion that do not sinter of the upper end of glass granules stacked body.In addition, because thermoshield fixture in the enterprising line position adjustment of the length direction of glass granules stacked body, therefore, need not can contact with glass granules stacked body, the position adjustment of thermoshield fixture can be carried out for each glass granules stacked body, and glass granules stacked body can be prevented to damage.
Accompanying drawing explanation
Fig. 1 is the concept map of the 1st embodiment representing sintering oven involved in the present invention.
Fig. 2 is the enlarged view of the thermoshield fixture periphery in the sintering oven of the 1st embodiment.
Fig. 3 represent lower clamp in the thermoshield fixture of Fig. 2 chimeric before state, (a) is vertical view, and (b) is side-view.
Fig. 4 represent lower clamp in the thermoshield fixture of Fig. 2 chimeric after state, (a) is vertical view, and (b) is side-view.
Fig. 5 represents the variation of the lower clamp in the thermoshield fixture of Fig. 2, and (a) is the vertical view before being fitted together to, and (b) is the vertical view after being fitted together to.
Fig. 6 represents the upper clamp in the thermoshield fixture of Fig. 2, and (a) is vertical view, and (b) is side-view.
Fig. 7 is the enlarged view of the thermoshield fixture periphery in the 2nd embodiment of sintering oven involved in the present invention.
Fig. 8 is the concept map representing existing sintering oven.
Embodiment
Below, with reference to accompanying drawing, embodiments of the present invention are described.Accompanying drawing for the purpose of description, does not limit scope of invention.In the accompanying drawings, in order to avoid the repetition illustrated, identical label represents same part.Dimension scale in accompanying drawing is not necessarily accurate.
1st embodiment
Fig. 1 is the concept map of the 1st embodiment representing sintering oven involved in the present invention.Sintering oven 10 as the 1st embodiment of the present invention has: stove core barrel 11, and its top is inaccessible by covering 13, and the glass granules stacked body 1 formed stacking glass granules on initial female rod 3 is accommodated; And as the well heater 12 of thermal source, it carries out heat-agglomerating at the outer circumferential side of stove core barrel 11 to glass granules stacked body 1.
Glass granules stacked body 1 has columned stable stack portion 4, be positioned at the taper stack portion 2,5 of the upper and lower end parts of stable stack portion 4 and the upper part of superposed taper stack portion 2 and do not have mother's rod portion 8 of stacking glass granules, and this glass granules stacked body 1 utilizes connecting member 14 to hang in stove core barrel 11.There is in the bottom of stove core barrel 11 gas supply part 15 of the rare gas elementes such as supply He gas, on the top of stove core barrel 11, there is gas discharge section 16.
Fig. 2 is the enlarged view of thermoshield fixture 20 periphery in sintering oven 10.Sintering oven 10 is near the taper stack portion 2 on glass granules stacked body 1 top, and having can at the thermoshield fixture 20 of the carbon of the enterprising line position adjustment of the length direction of this glass granules stacked body 1.Thermoshield fixture 20 is made up of the upper clamp 21 on the prescribed position being fixed on initial female rod 3, discoideus lower clamp 22,3 hanging bolts 23 with thermoshield function and adjusting nut 26A, 26B of screwing togather with each hanging bolt 23.At the pars intermedia of initial female rod 3 of fixing upper clamp 21, there is the mother's rod stage portion 7 upper clamp 21 engaged.
If the internal diameter of stove core barrel 11 is set to D0, then the outer diameter D 1 of thermoshield fixture 20 is set as the outside dimension dropped in the scope of 0.3D0 < D1 < 0.98D0.Such as, if internal diameter D0 is 210mm, then roughly outer diameter D 1 is set in the scope of 63mm ~ 206mm.If the upper end such as 300mm of the initial female rod 3 of the position H0 distance of lower clamp 22, be then set as about about 200mm by the height H 1 of thermoshield fixture 20.
Fig. 3 represent lower clamp 22 in thermoshield fixture 20 chimeric before state, (a) is vertical view, and (b) is side-view.Lower clamp 22 is made up of the 1st heat shield plate 24 and the 2nd heat shield plate 25 chimeric with the 1st heat shield plate 24 with notch 27.1st heat shield plate 24 has mother's rod through hole 28 that female excellent portion 8 is run through in the central portion, and 3 bolt-through holes 29 that the 1st heat shield plate 24 has the notch 27 when installing in the excellent portion 8 of mother and hanging bolt 23 is inserted.Notch 27 is for when installing in the excellent portion 8 of mother, by being pulled down by the 2nd heat shield plate 25, thus from notch 27 excellent for mother portion 8 being configured at the part in female excellent through hole 28, having the 1st chimeric stage portion 24A at two ora terminalis.
2nd heat shield plate 25 is formed through and is fitted together to from the top of the notch 27 of the 1st heat shield plate 24 and the such as fan shape covered by notch 27.The notch geometry of notch 27 is not limited to fan shape, and such as notch 27 also can be roughly rectangle (Fig. 5 (a), (b)).2nd heat shield plate 25 is formed as wider than notch 27, to be placed on the both ends of the notch 27 on the 1st heat shield plate 24, has the 2nd stage portion 25A at two ora terminalis.By making the 2nd stage portion 25A chimeric with the 1st stage portion 24A of the 1st heat shield plate 24, thus the 2nd heat shield plate 25 is fixed on the 1st heat shield plate 24.
In addition, by being partially formed recess 24B at the 1st stage portion 24A, form protuberance 25B in the position corresponding with recess 24B of the 2nd stage portion 25A, thus can by fixing for the 2nd heat shield plate 25 and its landing can not be made when chimeric with the 2nd stage portion 25A.Recess 24B, protuberance 25B can be positioned at the end (Fig. 3 (a)) of notch 27, also can be positioned at the central part neighbouring (Fig. 5 (a), (b)) of notch 27.If be positioned near central part, then also can be fixed in the longitudinal direction, therefore can fix more firmly.When notch 27 is fan shape, the cut angle θ 1 of the notch 27 of the 1st heat shield plate 24 is such as about 130 °, and the angle θ 2 of the 2nd heat shield plate 25 is set in the scope of such as 135 ° ~ 140 ° than cut angle θ 1 large (02 > θ 1).
Fig. 4 represent lower clamp 22 in thermoshield fixture 20 chimeric after state, (a) is vertical view, and (b) is side-view.Make the 2nd heat shield plate 25 be fitted together to under the state on the 1st heat shield plate 24, the excellent through hole 28 of the conglobate mother of shape, notch 27 is completely covered.The outer diameter D 2 of lower clamp 22 is equal with the outer diameter D 1 of thermoshield fixture 20, is set in the scope of 1.25 < D2/D3 < 5, preferably 3≤D2/D3≤4 by the ratio D2/D3 of the internal diameter D3 with mother's rod through hole 28.Such as, if outer diameter D 2 is 200mm, then the internal diameter D3 of excellent for mother through hole 28 is set in the scope of about 50mm ~ 66mm.
Fig. 6 represents the upper clamp 21 in thermoshield fixture 20, and (a) is vertical view, and (b) is side-view.Upper clamp 21 has: 3 connecting piece 31, and it extends to 3 directions and have bolt-through hole 33 near each leading section; And open holes 32, it is positioned at for the center directly fixing with initial female rod 3.Form thermodiffusion space (Fig. 6 (a)) in the both sides of each connecting piece 31, heat can not be trapped near female excellent portion 8, and the heat from well heater 12 spreads to the top of stove core barrel 11.Open holes 32 have upside for path and downside be the open holes stage portion 34 (Fig. 6 (b)) in large footpath, by open holes stage portion 34 being engaged with mother's rod stage portion 7 of initial female rod 3, thus thermoshield fixture 20 is fixed on the prescribed position of initial female rod 3.
Below, the method using thermoshield fixture 20 to carry out the sintering of glass granules stacked body 1 is described.
The assembling of thermoshield fixture
First, from the lower side of the 1st heat shield plate 24 of lower clamp 22,3 hanging bolts 23 are penetrated.Then, the 1st adjusting nut 26A and each hanging bolt 23 are screwed togather, hanging bolt 23 is penetrated in the bolt-through hole 33 of upper clamp 21.Then, the 2nd adjusting nut 26B and each hanging bolt 23 is made to screw togather.The position that screws togather of adjusting nut 26A, 26B is defined as, and when thermoshield fixture 20 engages with initial female rod 3, the 1st heat shield plate 24 of lower end is configured in the adjacent upper part of the taper stack portion 2 on glass granules stacked body 1 top.
Thermoshield fixture is to the installation of glass granules stacked body
Below, lifted by the thermoshield fixture 20 assembled, under the state pulled down by the 2nd heat shield plate 25, the upper end 6 in excellent for mother portion 8 is inserted in the open holes 32 of upper clamp 21 by side from below.Because glass granules stacked body 1 is heavier, so when it is arranged on connecting member 14, must while keep female excellent portion 8 while arrange by static organ, now, make the notch 27 of the 1st heat shield plate 24 towards side, mother excellent portion 8, the mode do not contacted with glass granules stacked body 1 with the 1st heat shield plate 24 moves to side, mother excellent portion 8.Thus, even if under the state keeping glass granules stacked body 1 by static organ in the below in the excellent portion 8 of mother, also excellent for mother portion 8 can be configured in the excellent through hole 28 of mother from the notch 27 of the 1st heat shield plate 24.Then, thermoshield fixture 20 is declined to glass granules stacked body 1 side, till upper clamp 21 engages with mother's rod stage portion 7 of initial female rod 3.
Now, to make the mode of the boundary member between the taper stack portion 2 of the 1st heat shield plate 24 horizontal arrangement on glass granules stacked body 1 top and mother's rod portion 8,3 groups of adjusting nuts 26A, 26B are carried out inching and located.Finally, by being fitted together to the 2nd heat shield plate 25 on the 1st heat shield plate 24, thus the installation of thermoshield fixture 20 is completed.
The sintering circuit of glass granules stacked body
The glass granules stacked body 1 being provided with thermoshield fixture 20 is linked with connecting member 14, and hanging is in sintering oven 10.Then, by utilizing well heater 12 will to be heated to about 1600 DEG C in stove core barrel 11, thus glass granules stacked body 1 is sintered and transparence.Now, the lower clamp 22 of thermoshield fixture 20 is configured in the boundary member between the taper glass granules stack portion 2 on glass granules stacked body 1 top and mother's rod portion 8.Thus, by from well heater 12 and conducted to the excellent portion 8 of mother by the base glass material etc. of transparence heat shielding while, glass granules stacked body 1 is sintered.
Thus, reliably can prevent the stretching of the initial female rod 3 caused by the heat of well heater 12, and the region in the portion that do not sinter on glass granules stacked body 1 top can be reduced.In addition, the lower clamp 22 of thermoshield fixture 20 can utilize adjusting nut 26 in the enterprising line position adjustment of the length direction of glass granules stacked body 1, therefore need not contact with glass granules stacked body 1, the position adjustment of lower clamp 22 can be carried out for each glass granules stacked body 1 respectively.
As mentioned above, the manufacture method of base glass material according to the present embodiment and the sintering oven of manufacture base glass material, the thermoshield fixture 20 with the lower clamp 22 can carrying out position adjustment is directly fixed in female excellent portion 8, lower clamp 22 is configured in the adjacent upper part of the taper glass granules stack portion 2 on glass granules stacked body 1 top.Thus, can thermoshield be carried out, making to conduct to the excellent portion 8 of mother from the heat of well heater 12 towards the upper side of lower clamp 22, therefore, reliably can prevent the stretching in female excellent portion 8.In addition, in the lower side of lower clamp 22, the top of taper stack portion 2 can be made close to heating region, therefore, the region in the portion that do not sinter of the upper end of glass granules stacked body 1 can be reduced.
In addition, because lower clamp 22 in the adjustment of the length direction of glass granules stacked body 1 enterprising line position, therefore, need not can contact with glass granules stacked body 1, the position adjustment of heat shield plate can be carried out to the position of the best for each glass granules stacked body 1.
2nd embodiment
Fig. 7 is the enlarged view of thermoshield fixture 50 periphery in the 2nd embodiment of the sintering oven of manufacture base glass material involved in the present invention.In addition, the assembling of thermoshield fixture is identical with the 1st embodiment with sintering circuit, therefore omits the description.
The installation of thermoshield fixture
Be as the sintering oven 40 of the 2nd embodiment of the present invention and the difference of the 1st embodiment, thermoshield fixture 50 is fixed on and connects on initial female connecting member 41 of excellent 3.Before connecting member 41 is inserted in stove core barrel 11, thermoshield fixture 50 is fixed on connecting member 41 in advance.Upper clamp 51 is configured to, except open holes 52 be not there is stage portion straight hole this point except, identical with the 1st embodiment.Connecting member 41 has the fastener 42 engaged by thermoshield fixture 50.The open holes 52 of upper clamp 51 engages from the top of connecting member 41 with fastener 42.
The installation of glass granules stacked body
For sintering oven 40, under the state in advance thermoshield fixture 50 being fixed on connecting member 41, glass granules stacked body 1 is hung in stove core barrel 11.That is, the 2nd heat shield plate 25 of lower clamp 22 is pulled down, the glass granules stacked body 1 with initial female rod 3 one is attached on connecting member 41, and hanging is in stove core barrel 11.
Now, by the boundary member between the taper stack portion 2 on glass granules stacked body 1 top and mother's rod portion 8, near the notch 27 being configured in the 1st heat shield plate 24 be fastened in advance in stove core barrel 11.Utilize 3 groups of adjusting nuts 26A, 26B to carry out position adjustment, do not contact with glass granules stacked body 1 to make the 1st heat shield plate 24 and be configured in boundary portion office exactly.Finally, the 2nd heat shield plate 25 is entrenched on the 1st heat shield plate 24, completes the installation of the glass granules stacked body 1 before sintering.(when glass granules stacked body 1 is pulled down, owing to the 2nd heat shield plate 25 can be pulled down, therefore under the state being provided with thermoshield fixture 50, glass granules stacked body 1 can be pulled down from connecting member 41.)
The size of thermoshield fixture 50 is determined by sintering oven 40 and glass granules stacked body 1.Such as, if the upper end 300mm of the initial female rod 3 of the position H0 distance of lower clamp 22, then the height H 1 of thermoshield fixture 50 is about about 400mm.In addition size is identical with the 1st embodiment, therefore omits the description.
As mentioned above, according to the manufacture method of the base glass material of the 2nd embodiment and the sintering oven of manufacture base glass material, the thermoshield fixture 50 with the lower clamp 22 can carrying out position adjustment is fixed on connecting member 41, lower clamp 22 is configured in the adjacent upper part of the taper stack portion 2 on glass granules stacked body 1 top.Thus, can thermoshield be carried out, making to conduct to the excellent portion 8 of mother from the heat of well heater 12 towards the upper side of lower clamp 22, therefore reliably can prevent the stretching in female excellent portion 8.In addition, in the lower side of lower clamp 22, the top of glass granules stacked body 1 can be made near heating region, therefore can reduce the region in the portion that do not sinter of the upper end of glass granules stacked body 1.In addition, lower clamp 22 in the enterprising line position adjustment of the length direction of glass granules stacked body 1, therefore, need not can contact with glass granules stacked body 1, can for each glass granules stacked body 1, and the position adjustment of lower clamp 22 is carried out in the position to the best.
In addition, the present invention not limit by above-mentioned each embodiment, can suitably freely carry out being out of shape, improvement etc.In addition, for the material, shape, size, numerical value, mode, quantity, configuration position etc. of each integrant in above-mentioned embodiment, as long as the present invention can be realized, then can be arbitrary, not limit.Such as, in the above-described embodiment, be illustrated for sintering circuit, but the fiber drawing furnace in wire-drawing process is also suitable for.In addition, the installation site of thermoshield fixture, except initial female rod and connecting member, also can be stove core barrel or the lid of sintering oven.Because thermoshield fixture can not contact with glass granules stacked body itself, therefore can reliably prevent from glass granules stacked body to damage.
Embodiment
Be in the sintering oven of 210mm at internal diameter D0, within one month, to carry out by a definite date the sintering (sintering temperature: 1600 DEG C) of the glass granules stacked body that external diameter is 180mm.In an embodiment, (be directly fixed on the carbon type thermoshield fixture (the 1st embodiment of the present invention) on initial female rod being provided with thermoshield fixture, outer diameter D 1 is 200mm, height H 1 is 220mm, the position H0 of lower clamp is the upper end 320mm of the initial female rod of distance, the outer diameter D 2 of lower clamp is 200mm, internal diameter D3:55mm) state under sinter.In comparative example, sinter under the state of not installing thermoshield fixture.For embodiment and comparative example, to sintering, wire drawing and flame polish time there is unfavorable condition (mother metal drops, mother metal upper end is eccentric, optical fiber broken string, mother metal crackle) frequency add up to.Result shown in table.
Table
It is as shown in the table, and in an embodiment, mother metal drops and mother metal crackle does not occur completely.In addition, the eccentric and optical fiber broken string in mother metal upper end also can suppressed must be lower.Can infer that its reason is, in the lower side of the lower clamp of thermoshield fixture, by lower clamp being adjusted to best position, thus reliably make the upper end of glass granules stacked body sinter, in addition, due to the thermal conduction of the upper side for lower portion fixture, utilize thermoshield fixture to shield, therefore can suppress the stretching in female excellent portion.In addition, when the thermoshield fixture described in use the 2nd embodiment, also roughly identical with it result can be obtained.
On the other hand, known following situation in comparative example, that is, there occurs mother metal and drop and mother metal crackle, and mother metal upper end Frequency that is eccentric and optical fiber broken string exceeds and is more than or equal to 10 times compared with embodiment.Therefore, can confirm by installing thermoshield fixture and obtain significant effect.
Claims (4)
1. a sintering oven for base glass material, is characterized in that, comprises:
Stove core barrel, its glass granules stacked body formed stacking glass granules on initial female rod is accommodated;
Connecting member, described glass granules stacked body is hung in described stove core barrel by it;
Process furnace, the encirclement at least partially of described stove core barrel is carried out heat-agglomerating at heating region to described glass granules stacked body by it; And
Thermoshield fixture, it is configured in the adjacent upper part of the taper stack portion on the described glass granules stacked body top in described stove core barrel and the position of the heat shielding will conducted from described heating region and described base glass material to described initial female rod,
Described thermoshield fixture can carry out position adjustment relative to described glass granules stacked body on the length direction of described glass granules stacked body.
2. the sintering oven of base glass material according to claim 1, is characterized in that,
Described thermoshield fixture is fixed on described stove core barrel, described connecting member or described initial female rod.
3. the sintering oven of base glass material according to claim 1, is characterized in that,
The hanging bolt that described thermoshield fixture comprises upper clamp, heat shield plate and described upper clamp and described heat shield plate linked, described upper clamp is fixed on described connecting member or described initial female rod, and the interval of described upper clamp and described heat shield plate can adjust.
4. a manufacture method for base glass material, in the method, utilizes the heat from heating region, and the glass granules stacked body formed stacking glass granules on initial female rod carries out heat-agglomerating,
It is characterized in that,
At the adjacent upper part of the taper stack portion on described glass granules stacked body top, configuration can carry out the thermoshield fixture of position adjustment on the length direction of described glass granules stacked body relative to described glass granules stacked body, by from described heating region and described base glass material to while the heat shielding of described initial female rod conduction, described glass granules stacked body is sintered.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2010207967 | 2010-09-16 | ||
| JP2010-207967 | 2010-09-16 |
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| CN103350445B (en) * | 2013-07-20 | 2016-04-27 | 李涛 | Ceramic fiber honeycomb stock prepare fixture and preparation method |
| CN108129017A (en) * | 2018-01-25 | 2018-06-08 | 江苏通鼎光棒有限公司 | It is a kind of to improve OVD sintering efficiency and extend the device and method for drawing bar service life |
| JP7421407B2 (en) * | 2020-04-24 | 2024-01-24 | 株式会社フジクラ | Porous glass body sintering equipment |
| CN114415287B (en) * | 2022-01-24 | 2023-04-18 | 武汉理工大学 | Hydrogen-resistant carbon-coated fiber grating string and preparation method and preparation device thereof |
| WO2023248836A1 (en) * | 2022-06-22 | 2023-12-28 | 住友電気工業株式会社 | Manufacturing method of optical fiber preform, and optical fiber preform |
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| JPH0328139A (en) * | 1989-06-23 | 1991-02-06 | Fujikura Ltd | Supporting rod for porous glass preform to be dehydrated to form transparent glass |
| CN1108623A (en) * | 1993-06-08 | 1995-09-20 | 住友电气工业株式会社 | Apparatus for vitrifying soot preform for optical fiber |
| JP2000219519A (en) * | 1999-01-28 | 2000-08-08 | Shin Etsu Chem Co Ltd | Porous glass preform sintering device |
| CN1531511A (en) * | 2001-06-14 | 2004-09-22 | ס�ѵ�����ҵ��ʽ���� | Device and method for producing stack of fine glass particles |
| WO2003020653A1 (en) * | 2001-08-28 | 2003-03-13 | Corning Incorporated | Furnace assembly for heating an optical waveguide preform |
| CN1934040A (en) * | 2004-03-18 | 2007-03-21 | 信越化学工业株式会社 | Method and equipment for sintering porous glass base material |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5821443B2 (en) | 2015-11-24 |
| JP2012082127A (en) | 2012-04-26 |
| CN102531376A (en) | 2012-07-04 |
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