CN103496842B - The material leakage system of the easy crystallize glass of low viscosity - Google Patents
The material leakage system of the easy crystallize glass of low viscosity Download PDFInfo
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- CN103496842B CN103496842B CN201310431976.XA CN201310431976A CN103496842B CN 103496842 B CN103496842 B CN 103496842B CN 201310431976 A CN201310431976 A CN 201310431976A CN 103496842 B CN103496842 B CN 103496842B
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- material leakage
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- leakage passage
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- 239000000463 material Substances 0.000 title claims abstract description 139
- 239000011521 glass Substances 0.000 title claims abstract description 64
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 131
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 66
- 238000010438 heat treatment Methods 0.000 claims abstract description 33
- 238000007599 discharging Methods 0.000 claims abstract description 30
- 239000011449 brick Substances 0.000 claims description 9
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 6
- 210000003141 lower extremity Anatomy 0.000 claims description 6
- 229910052750 molybdenum Inorganic materials 0.000 claims description 6
- 239000011733 molybdenum Substances 0.000 claims description 6
- 230000007547 defect Effects 0.000 abstract description 12
- 239000005304 optical glass Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 238000007527 glass casting Methods 0.000 abstract description 3
- 238000005266 casting Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000004031 devitrification Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- XHGGEBRKUWZHEK-UHFFFAOYSA-L tellurate Chemical compound [O-][Te]([O-])(=O)=O XHGGEBRKUWZHEK-UHFFFAOYSA-L 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000003057 platinum Chemical class 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Abstract
A kind of material leakage system of the easy crystallize glass of low viscosity, including platinum material leakage pipe, platinum material leakage passage and heating arrangements, 1.5��3.5 times of the diameter that diameter is the material leakage pipe that former pipe flow mode adopts of described platinum material leakage pipe, described platinum material leakage passage is a material leakage passage including the closing that circular charging aperture, rectangular discharging opening become standard trapezoidal with top and bottom, described heating arrangements includes adding hot jacket, power supply, temperature sensor and control unit, and the described hot jacket that adds is wrapped in the surrounding of described platinum material leakage passage. The present invention can effectively control the flow velocity of glass material leakage, accelerate material leakage speed, effect to glass homogenizing again. Can obviously reduce the generation of crystallize in glass casting process, striped, point defect such as phase and bubble. Can be applicable to produce optical glass, be particularly suitable for producing high-quality optical glass.
Description
Technical field
The present invention relates to the production field of optical glass, particularly the material leakage system of the easy crystallize glass of a kind of low viscosity, this material leakage system can effectively prevent from producing crystallize, striped, point defect such as phase and bubble in glass casting process.
Background technology
Development along with optoelectronic information industry, the performance requirement of optical glass is also constantly improved, and the optical glass being now widely used for infrared window imaging, various digital product, high power microscope etc. mostly is low viscosity, easy crystallize glass, although these glass have very excellent optical property, mechanical performance, but due to the low viscosity of glass, easy crystallize feature, the process of cast often produces crystallize, striped, point defect such as phase and bubble, have a strong impact on the serviceability of glass, reduce the yield rate of glass.
For meeting the demand of optoelectronic information industry development, at present this problem is also created some solutions. Such as constantly changing the composition of glass, to improving glass viscosity, but this is to sacrifice some premium properties for cost; When not changing the composition of glass, the improvement of melting technology also can be greatly improved the yield rate of glass, but mostly the process at present glass melting improved, be concentrate on control melting time, temperature or improve melting process, for instance changed into continuous smelting technology by non-continuous smelting technology. Patent (FR [31] 9303287) provides the stream discharging channel of a kind of glass, but this stream discharging channel is suitable only for into glass properties glass ingredient good, not easily crystallize, producing substantial amounts of crystallize, striped, point glass defect such as phase and bubble when material road produces low viscosity, easy crystallize glass flowing out with this, basic production does not go out to meet the high-quality of demand, large-sized optical glass. Produce the mode of low viscosity, the substantially uniform employing material leakage of easy crystallize glass at present.
In the process of glass material leakage, in material leakage system, cast high-quality optical glass is played conclusive effect by the velocity flow profile of vitreous humour, pressure distribution, thermo parameters method. Existing glass material leakage system is made up of a material leakage pipe substantially, patent (Chinese Patent Application No.: 201120119916.0) is mentioned the tendency that the heating of material leakage pipe can effectively suppress devitrification of glass, but also it is only that line up crystallize creates certain suppression here, patent (Chinese Patent Application No.: 03233342.0) is also only changed into multitube by single tube, but owing to all not changing the mode of pipe flow in casting process, cause that vitreous humour flow velocity yet suffers from inequality in a mold, is easily generated the defect such as striped, bubble;And the mode material leakage speed of pipe flow is slow, causes that pour point temperature is too high in long-time casting process, equally easily produces crystallize. Although there being vitreous humour in crucible agitated relatively uniform again, but still have uneven composition to exist in four perisporiums and the bottom of crucible, owing to the mode of pipe flow can not play the effect of homogenizing vitreous humour again, and cause that these uneven compositions can enter to pour into a mould parts through material leakage pipe flow equally, cause that inside glass is likely to produce point phase.
Summary of the invention
Have for the mode of existing pipe flow that vitreous humour flow velocity is uneven, material leakage speed is slow and can not play the deficiency of homogenizing vitreous humour composition again, the present invention provides the material leakage system of the easy crystallize glass of a kind of low viscosity, this material leakage system can effectively coutroi velocity, accelerate material leakage speed and have the effect to glass homogenizing again, can obviously reduce crystallize in glass casting process, striped, point mutually and the generation of the defects such as bubble. Can be applicable to produce optical glass, be particularly suitable for producing high-quality optical glass.
The technical scheme that the present invention is concrete is as follows:
A kind of material leakage system of the easy crystallize glass of low viscosity, it is characterized in that this system includes platinum material leakage pipe, platinum material leakage passage and heating arrangements, 1.5��3.5 times of the diameter that diameter is the material leakage pipe that former pipe flow mode adopts of described platinum material leakage pipe, described platinum material leakage passage is one and includes circular charging aperture, rectangular discharging opening becomes the material leakage passage of accurate trapezoidal closing with top and bottom, the both sides of this material leakage passage are constituted by the first side wall and the second sidewall, the second described sidewall is in 90 �� with described discharging opening plane, described heating arrangements includes adding hot jacket, power supply, temperature sensor and control unit, the described hot jacket that adds is wrapped in the surrounding of described platinum material leakage passage, this adds hot jacket near the side of platinum material leakage passage is hollow, refractory brick is filled in side away from platinum material leakage passage, inwall at refractory brick is uniformly arranged the heating rod of many series connection, the heating rod of these many series connection is connected with power supply, one end of described temperature sensor is arranged on described platinum material leakage passage and adds between hot jacket, the other end connects described control unit, described control unit controls heating power supply.
The junction of described platinum material leakage pipe and described platinum material leakage passage is a fillet.
The discharging opening of described platinum material leakage passage is flat mouth, and namely the upper plane of discharging opening is parallel with lower plane.
The inner side lower limb of the discharging opening of described platinum material leakage passage adds a triangular prism projection.
Described heating rod is carbon-point or molybdenum bar.
The technique effect of the present invention is as follows:
Under the adjustment of material leakage platform, 1.5��3.5 times of the diameter of the material leakage pipe that the platinum material leakage Guan Weiyuan pipe flow mode that this material leakage system adopts adopts, this mode not only can guarantee that steady material leakage, and can accelerate material leakage speed, the effective generation suppressing crystallize;
The discharging opening of material leakage platform is directly by the linear contact lay of non-point cantact with casting mold, makes vitreous humour flow velocity in a mold uniform, it is possible to effectively suppression glass cord and bubble; And owing to the area between material leakage pipe and discharging opening is relatively big, add that temperature is higher, it is suitable for diffusion, can better realize the homogenizing again of glass ingredient further, play vital effect to controlling glass phase-separating.
Control heating power supply by control unit, it is achieved the free temperature adjustment of material leakage platform and insulation, can effectively control the viscosity of vitreous humour, prevent devitrification of glass further.
Experiments show that, being significantly reduced by crystallize, striped, point defect such as phase and bubble in the easy crystallize glass of low viscosity that present system is poured into a mould, the yield rate of glass significantly improves, and to producing, high-quality optical glass is especially suitable.
Accompanying drawing explanation
Fig. 1 is the perspective view of the material leakage system of the easy crystallize glass of low viscosity of the present invention.
Fig. 2 is the local A adding hot jacket of the material leakage system of the easy crystallize glass of low viscosity of the present invention31��A31Cross-sectional view.
Fig. 3 is the fillet place cross-sectional view of the material leakage system of the easy crystallize glass of low viscosity of the present invention
Fig. 4 is the cross-sectional view of the discharge outlet flat mouth of the material leakage system of the easy crystallize glass of low viscosity of the present invention.
The inner side lower limb that Fig. 5 is the discharge outlet of the material leakage system of the easy crystallize glass of low viscosity of the present invention adds the cross-sectional view that a triangular prism is protruding.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the invention will be further described, but should not limit protection scope of the present invention with this.
Embodiment 1
First referring to as shown in Figure 1, Figure 2, Fig. 1 is the axonometric chart of the embodiment of the material leakage system of the easy crystallize glass of low viscosity of the present invention, and Fig. 2 is the local A adding hot jacket of the material leakage system of the easy crystallize glass of low viscosity of the present invention31��A31Cross-sectional view. as seen from the figure, the material leakage system of the easy crystallize glass of low viscosity of the present invention, including platinum material leakage pipe 1, platinum material leakage passage 2 and heating arrangements 3, 1.5��3.5 times of the diameter that diameter is the material leakage pipe that former pipe flow mode adopts of described platinum material leakage pipe 1, described platinum material leakage passage 2 is one and includes circular charging aperture 21, rectangular discharging opening 24 becomes the material leakage passage of accurate trapezoidal closing with top and bottom, the both sides of this material leakage passage are constituted by the first side wall 22 and the second sidewall 23, the second described sidewall 23 is in 90 �� with described discharging opening 24, described heating arrangements 3 includes adding hot jacket 31, power supply 32, temperature sensor 33 and control unit 34, the described hot jacket 31 that adds is wrapped in the surrounding of described platinum material leakage passage 2, this adds hot jacket 31 near the side of platinum material leakage passage 2 is hollow 39, refractory brick 36 is filled in side away from platinum material leakage passage, inwall at refractory brick is uniformly arranged the heating rod 35 of many series connection, the heating rod of these many series connection is connected with power supply 32, one end of described temperature sensor 33 is arranged on described platinum material leakage passage 2 and adds between hot jacket 3, the other end connects described control unit 34, described control unit 34 controls heating power supply 32.
The circular charging aperture of the platinum material leakage pipe in the present embodiment and platinum material leakage passage is fixedly linked, and forms a fillet, can ensure the inflow material leakage platform of vitreous humour relative smooth herein, effectively suppresses to produce bubble herein.
The discharging opening of the platinum material leakage passage in the present embodiment is flat mouth, and namely the upper plane of discharging opening is parallel with lower plane.
The heating rod of the present embodiment is molybdenum heating rod, and heating-up temperature is 27��1700 DEG C.
Vitreous humour initially enters platinum material leakage pipe 1 as shown in Figure 1, enters platinum material leakage passage 2 through charging aperture 21, naturally trickles forward in the platinum material leakage passage 2 of constant temperature, flows into casting mold through discharging opening 24 after.
As it is shown in figure 1, platinum material leakage pipe 1 and platinum material leakage passage 2 are fixedly welded on charging aperture 21,2 times of the diameter that platinum material leakage pipe 1 is the material leakage pipe that former pipe flow mode adopts adopted in this embodiment.
As it is shown in figure 1, platinum material leakage passage 2 lower planes in echelon, close, be charging aperture 21 with platinum material leakage pipe 1 connecting place, front end is rectangular discharging opening 24.The both sides of this platinum material leakage passage 2 are constituted by the first side wall 22 and the second sidewall 23, and wherein the second sidewall 23 is in 90 �� with discharging opening plane 24. In platinum material leakage passage in this embodiment, each adopts identical platinum thickness, and platinum thickness is 1mm, two side height 5mm, the long 450mm of sidewall 22, the long 25mm of sidewall 23.
As it is shown in figure 1, heating arrangements 3 is constituted by adding hot jacket 31, power supply 32, temperature sensor 33 and control unit 34. Wherein add hot jacket 31 and be wrapped in the surrounding of platinum material leakage passage, add many heating rods with series connection in hot jacket to be connected with power supply 32, temperature sensor 33 one end is arranged on platinum material leakage passage 2 and adds between hot jacket 3, the other end connects control unit 34, wherein control unit 34 controls heating power supply 32, freely regulating and constant temperature of temperature in platinum material leakage passage can be realized by control unit, it is ensured that vitreous humour in warm field herein uniformly, thus effectively controlling devitrification of glass.
Fig. 2 is the local A adding hot jacket 31 in Fig. 131��A31Cross-sectional view. As shown in the figure, adding hot jacket 31 near the side of platinum material leakage passage 2 is hollow 34, hollow inner side is platinum material leakage conduit wall 37, refractory brick 36 is filled in hollow outside, refractory brick outer wrapping iron sheet 38, inwall at refractory brick is uniformly arranged the molybdenum heating rod 35 of many series connection, and molybdenum heating rod 35 is exposed in hollow 39, and the molybdenum heating rod of these many series connection is connected with power supply 32.
The charging aperture 21 of the platinum material leakage passage in this embodiment is fillet, and Fig. 3 is that in Fig. 1, charging aperture 21 is the cross-sectional view of fillet. Vitreous humour is after platinum material leakage pipe 1 enters fillet charging aperture 21, it is ensured that vitreous humour is smooth enters platinum material leakage passage.
The discharging opening 24 of the platinum material leakage passage in this embodiment is flat mouth, and Fig. 4 is that in Fig. 1, discharging opening 24 is the cross-sectional view of flat mouth. Vitreous humour by platinum material leakage passage 2 after enter casting mold through discharging opening 24. This kind can well control the defects such as vitreous humour flow velocity, the striped that minimizing causes because of vitreous humour flow velocity inequality in casting process for the discharging opening of the easy crystallize glass of low viscosity.
By adopting the present embodiment cast large-sized low viscosity, the germanium of easy crystallize, the saturating glasses for infrared use of gallate. The material leakage temperature of vitreous humour is 1250 DEG C, and before material leakage, 10min begins to warm up, it is ensured that can heat material leakage system before material leakage starts to 1250 DEG C, and insulation to material leakage terminates. Annealed detection glass defect, the glassy phase ratio of the material leakage system cast with simple material leakage pipe before, in glass, crystallize, striped, point defect such as phase and bubble significantly reduce, and find that yield rate is up to more than 95.7% through statistics for a long time.
Embodiment 2
The inner side lower limb of the discharging opening 24 of the platinum material leakage passage in embodiment 2 adds a triangular prism projection 25, the system and device of other positions such as embodiment 1, Fig. 5 is the cross-sectional view that the inner side lower limb of discharging opening 24 in Fig. 1 adds a triangular prism projection 25, wherein the bottom surface of triangular prism is isoceles triangle row, the acute angle of isoceles triangle row is 30 ��, and height is 2mm.
Poured into a mould in embodiment 1 with large-sized low viscosity of sample ingredient composition, the germanium of easy crystallize, the saturating glasses for infrared use of gallate by the present embodiment, material leakage process and Post isothermal treatment are constant, after testing the crystallize in glass, striped, point mutually and a bubble etc. defect is equally possible is effectively controlled, its yield rate can up to more than 96.2%.
Embodiment 3
The heating rod 35 in heating arrangements 3 in embodiment 3 adopts carbon-point to heat, and the discharging opening 24 of platinum material leakage passage is flat mouth, the system and device of other positions such as embodiment 1.
Pouring into a mould, by the present embodiment, the tellurate glass that viscosity is less, the material leakage temperature of glass is 900 DEG C, and before material leakage, 10min begins to warm up, it is ensured that can heat material leakage system before material leakage starts to 900 DEG C, and insulation terminates to material leakage, and Post isothermal treatment is constant. The glassy phase ratio of the material leakage system cast with simple material leakage pipe before, in glass, the longer striped seen significantly reduces, and the yield rate of glass can reach more than 82.6%.
Embodiment 4
The heating rod 35 in heating arrangements 3 in embodiment 4 adopts carbon-point to heat, the inner side lower limb of the discharging opening 24 of platinum material leakage passage adds a triangular prism projection 25, wherein the acute angle of the isoceles triangle row of triangular prism bottom surface is 30 ��, and height is 1.5mm, the system and device of other positions such as embodiment 1.
Pouring into a mould fluorine, tellurate glass by the present embodiment, the material leakage temperature of glass is 850 DEG C, and before material leakage, 10min begins to warm up, it is ensured that can heat material leakage system before material leakage starts to 850 DEG C, and insulation terminates to material leakage, and Post isothermal treatment is constant. Comparing with the glass poured into a mould before, in glass, the longer defect seen significantly reduces, and the yield rate of glass can reach more than 87.3%.
Claims (5)
1. the material leakage system of the easy crystallize glass of low viscosity, it is characterised by that this system includes platinum material leakage pipe (1), platinum material leakage passage (2) and heating arrangements (3), 1.5��3.5 times of the diameter that diameter is the material leakage pipe that former pipe flow mode adopts of described platinum material leakage pipe (1), described platinum material leakage passage (2) is one and includes circular charging aperture (21), rectangular discharging opening (24) becomes the material leakage passage of accurate trapezoidal closing with top and bottom, the both sides of this material leakage passage are constituted by the first side wall (22) and the second sidewall (23), described the second sidewall (23) is in 90 �� with described discharging opening (24), described heating arrangements (3) includes adding hot jacket (31), power supply (32), temperature sensor (33) and control unit (34), the described hot jacket (31) that adds is wrapped in the surrounding of described platinum material leakage passage (2), this adds hot jacket (31) near the side of platinum material leakage passage (2) is hollow (39), refractory brick (36) is filled in side away from platinum material leakage passage, inwall at refractory brick is uniformly arranged the heating rod (35) of many series connection, the heating rod of these many series connection is connected with power supply (32), one end of described temperature sensor (33) is arranged on described platinum material leakage passage (2) and adds between hot jacket (31), the other end connects described control unit (34), described control unit (34) controls heating power supply (32).
2. the material leakage system of the easy crystallize glass of low viscosity according to claim 1, it is characterised in that: the junction of described platinum material leakage pipe (1) and described platinum material leakage passage (2) is a fillet.
3. the material leakage system of the easy crystallize glass of low viscosity according to claim 1, it is characterized in that: the discharging opening (24) of described platinum material leakage passage (2) is flat mouth, and namely the upper plane of discharging opening (24) is parallel with lower plane.
4. the material leakage system of the easy crystallize glass of low viscosity according to claim 1, it is characterised in that: the inner side lower limb of the discharging opening (24) of described platinum material leakage passage (2) adds a triangular prism projection (25).
5. the material leakage system of the easy crystallize glass of low viscosity according to claim 1, it is characterised in that: described heating rod (35) is carbon-point or molybdenum bar.
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| CN201310431976.XA CN103496842B (en) | 2013-09-22 | 2013-09-22 | The material leakage system of the easy crystallize glass of low viscosity |
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| CN201310431976.XA CN103496842B (en) | 2013-09-22 | 2013-09-22 | The material leakage system of the easy crystallize glass of low viscosity |
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| CN103496842A CN103496842A (en) | 2014-01-08 |
| CN103496842B true CN103496842B (en) | 2016-06-08 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105271639B (en) * | 2015-10-14 | 2017-10-31 | 湖北新华光信息材料有限公司 | A kind of anti-crystallization material leakage pipe device |
| CN106277719A (en) * | 2016-08-26 | 2017-01-04 | 湖北新华光信息材料有限公司 | A kind of wide plate material molding material leakage mouth device |
| CN111574033B (en) * | 2020-05-15 | 2021-12-03 | 南通市国光光学玻璃有限公司 | Low-viscosity optical glass dynamic supplement type leaking molding process |
| CN111620550B (en) * | 2020-05-29 | 2023-01-24 | 湖北新华光信息材料有限公司 | Low-melting-point optical glass forming device |
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|---|---|---|---|---|
| ES2169305T3 (en) * | 1996-09-20 | 2002-07-01 | Owens Brockway Glass Container | METHOD AND APPARATUS FOR FEEDING A CRYSTAL COATED CURRENT. |
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