CN103496842A - Material leakage system of crystallizable glass with low viscosity - Google Patents
Material leakage system of crystallizable glass with low viscosity Download PDFInfo
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- CN103496842A CN103496842A CN201310431976.XA CN201310431976A CN103496842A CN 103496842 A CN103496842 A CN 103496842A CN 201310431976 A CN201310431976 A CN 201310431976A CN 103496842 A CN103496842 A CN 103496842A
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- platinum
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- material leakage
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- 239000000463 material Substances 0.000 title claims abstract description 136
- 239000011521 glass Substances 0.000 title claims abstract description 82
- 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 59
- 238000002425 crystallisation Methods 0.000 claims description 35
- 230000008025 crystallization Effects 0.000 claims description 35
- 239000011449 brick Substances 0.000 claims description 9
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 6
- 229910052750 molybdenum Inorganic materials 0.000 claims description 6
- 239000011733 molybdenum Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 230000007547 defect Effects 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000004031 devitrification Methods 0.000 abstract description 4
- 239000005304 optical glass Substances 0.000 abstract 2
- 238000005191 phase separation Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 17
- 239000002184 metal Substances 0.000 description 17
- 238000005266 casting Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000007599 discharging 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
- 238000007669 thermal treatment Methods 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
- 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
- 238000007527 glass casting Methods 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
- 238000009738 saturating Methods 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
- 238000000137 annealing Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process 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
- 230000005764 inhibitory process Effects 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
- 238000003756 stirring Methods 0.000 description 1
Images
Classifications
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- 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
Landscapes
- Glass Compositions (AREA)
Abstract
The invention discloses a material leakage system of crystallizable glass with low viscosity. The material leakage system comprises a platinum material leakage tube, a platinum material leakage passage and a heating mechanism, wherein the diameter of the platinum material leakage tube is 1.5-3.5 times as large as the diameter of a material leakage tube adopted in an original tube flow manner, the platinum material leakage passage comprises a circular feed opening, a rectangular discharge opening and a sealed material leakage passage with trapezoidal upper and lower surfaces, the heating mechanism comprises a heating sleeve, a power supply, a temperature sensor and a control unit, and the heating sleeve is wrapped on the surrounding of the platinum material leakage passage. The material leakage system disclosed by the invention can effectively control the flow speed of glass material leakage, accelerate the material leakage speed and homogenize the glass again. Defects generated in the glass pouring process can be obviously reduced, such as devitrification, stripe, phase separation, bubble, etc. The material leakage system can be applied in the production of optical glass and is particularly suitable for the production of high-quality optical glass.
Description
Technical field
The present invention relates to the production field of opticglass, the leakage material system of the easy crystallization glass of a kind of low viscosity particularly, this leaks material system can effectively prevent from the glass casting process producing the defects such as crystallization, striped, phase-splitting and bubble.
Background technology
Development along with the optoelectronic information industry, performance requriements to opticglass also constantly improves, and the opticglass that is widely used at present infrared window imaging, various digital product, powerful microscope etc. mostly is low viscosity, easy crystallization glass, although these glass have very excellent optical property, mechanical property, but due to the low viscosity of glass, easy crystallization characteristics, tend to produce the defects such as crystallization, striped, phase-splitting and bubble in the process of cast, have a strong impact on the use properties of glass, reduce the yield rate of glass.
For meeting the demand of optoelectronic information industry development, at present this problem has also been produced to some solutions.For example constantly change the composition of glass, to improving glass viscosity, but this take and sacrifices some premium properties as cost; Do not changing under the composition condition of glass, improvement to melting technology also can improve the yield rate of glass greatly, but at present to the improved process of glass melting, be mostly to concentrate on and control melting time, temperature or improve melting process, for example by non-continuous smelting technology, change the continuous smelting technology into.A kind of stream discharging channel of glass is provided in patent (FR[31] 9303287), but this stream discharging channel only is applicable to into the glass ingredient that glass properties is good, be difficult for crystallization, can produce the glass defects such as a large amount of crystallizatioies, striped, phase-splitting and bubble, high-quality, large-sized opticglass that basic production does not go out to satisfy the demands with this stream discharging channel production low viscosity, easy crystallization glass the time.Production low viscosity, easy crystallization glass unify to adopt the mode of leaking material substantially at present.
At glass, leak in the process of material, velocity flow profile, the pressure that leaks glass metal in the material system distributes, temperature field distributes and plays conclusive effect to pouring into a mould high-quality opticglass.Existing glass leaks the material system and substantially by one, leaks and expect that pipe forms, in patent (Chinese Patent Application No.: mention the tendency that can effectively suppress devitrification of glass to leaking the heating of material pipe 201120119916.0), but be only also that the line up crystallization has produced certain inhibition here, in patent (Chinese Patent Application No.: be only also to change multitube into by single tube 03233342.0), but owing to all not changing the mode of pipe stream in casting process, cause glass metal flow velocity in mould still to have inequality, easily produce the defects such as striped, bubble; And it is slow that the mode of pipe stream is leaked material speed, cause pour point excess Temperature in long-time casting process, the same crystallization that easily produces.Although there is again the interior glass metal of crucible relatively even through stirring, but surrounding wall and bottom at crucible still have inhomogeneous composition to exist, the mode flowed due to pipe can not play the effect of homogenizing glass metal again, and cause these inhomogeneous compositions can flow into the cast parts through leaking the material pipe equally, cause inside glass may produce phase-splitting.
Summary of the invention
Mode for existing pipe stream exists glass metal flow velocity inequality, leakage material speed to reach slowly and can not play the deficiency of homogenizing glass metal composition again, the invention provides the leakage material system of the easy crystallization glass of a kind of low viscosity, this leakage material system effectively coutroi velocity, quickening is leaked material speed and the effect of homogenizing again of pair glass is arranged, and can obviously reduce the generation of the defects such as crystallization, striped, phase-splitting and bubble in the glass casting process.Can be applicable to produce opticglass, be particularly suitable for producing high-quality opticglass.
The concrete technical scheme of the present invention is as follows:
The leakage material system of the easy crystallization glass of a kind of low viscosity, characteristics are that this system comprises that platinum leaks the material pipe, platinum leaks material passage and heating arrangements, 1.5～3.5 times of the diameter that the diameter that described platinum leaks the material pipe is the leakage material pipe that adopts of former pipe stream mode, described platinum leaks expects that passage is one and comprises circular opening for feed, rectangular discharge port becomes the leakage material passage of the trapezoidal sealing of standard with top and bottom, these both sides of leaking the material passage form by the first side wall and the second sidewall, described the second sidewall becomes 90 ° with described discharge port plane, described heating arrangements comprises heating jacket, power supply, temperature sensor and control unit, described heating jacket is wrapped in the surrounding that described platinum leaks the material passage, the side that this heating jacket leaks the material passage near platinum is hollow, one side of leaking the material passage away from platinum is filled refractory brick, the heating rod of many series connection evenly is set at the inwall of refractory brick, the heating rod of these many series connection is connected with power supply, one end of described temperature sensor is arranged on described platinum and leaks between material passage and heating jacket, the other end connects described control unit, described control unit is controlled heating power supply.
It is a fillet with the junction that described platinum leaks the material passage that described platinum leaks the material pipe.
The discharge port that described platinum leaks the material passage is flat mouth, and the upper plane of discharge port is parallel with lower plane.
The inboard lower rim that described platinum leaks the discharge port of material passage adds a triangular prism projection.
Described heating rod is carbon-point or molybdenum bar.
Technique effect of the present invention is as follows:
Under the adjusting of leaking the material platform, this leaks 1.5～3.5 times of diameter that platinum that material system adopts leaks the leakage material pipe that material Guan Weiyuan pipe stream mode adopts, and this mode not only can guarantee steadily to leak material, and can accelerate to leak material speed, effectively suppresses the generation of crystallization;
The discharge port that leaks the material platform is directly to carry out the line contact that non-point contacts with casting mold, makes the flow velocity of glass metal in mould even, can effectively suppress glass cord and bubble; And because the area leaked between material pipe and discharge port is larger, add that temperature is higher, be applicable to diffusion, can further better realize the homogenizing again of glass ingredient, to controlling the glass phase-splitting, play vital effect.
Control heating power supply by control unit, realize leaking free temperature adjustment and the insulation of material platform, can effectively control the viscosity of glass metal, further prevent devitrification of glass.
Experiment shows, by the defects such as crystallization, striped, phase-splitting and bubble in the easy crystallization glass of low viscosity of system cast of the present invention, obviously reduces, and the yield rate of glass obviously improves, especially applicable to producing high-quality opticglass.
The accompanying drawing explanation
Fig. 1 is the perspective view of the leakage material system of the easy crystallization glass of low viscosity of the present invention.
Fig. 2 is the local A of heating jacket of the leakage material system of the easy crystallization glass of low viscosity of the present invention
31-A
31cross-sectional view.
Fig. 3 is the fillet place cross-sectional view of the leakage material system of the easy crystallization glass of low viscosity of the present invention
Fig. 4 is the cross-sectional view of discharge port place flat mouth of the leakage material system of the easy crystallization glass of low viscosity of the present invention.
Fig. 5 is the cross-sectional view that the inboard lower rim at discharge port place of the leakage material system of the easy crystallization glass of low viscosity of the present invention adds a triangular prism projection.
Embodiment
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.
First refer to as shown in Figure 1, Figure 2, the stereographic map of the embodiment of the leakage material system that Fig. 1 is the easy crystallization glass of low viscosity of the present invention, Fig. 2 is the local A of heating jacket of the leakage material system of the easy crystallization glass of low viscosity of the present invention
31-A
31cross-sectional view.As seen from the figure, the leakage material system of the easy crystallization glass of low viscosity of the present invention, comprise that platinum leaks material pipe 1, platinum leaks material passage 2 and heating arrangements 3, 1.5～3.5 times of the diameter that the diameter that described platinum leaks material pipe 1 is the leakage material pipe that adopts of former pipe stream mode, described platinum leaks expects that passage 2 is one and comprises circular opening for feed 21, rectangular discharge port 24 becomes the leakage material passage of the trapezoidal sealing of standard with top and bottom, these both sides of leaking the material passage form by the first side wall 22 and the second sidewall 23, described the second sidewall 23 and 24 one-tenth 90 ° of described discharge ports, described heating arrangements 3 comprises heating jacket 31, power supply 32, temperature sensor 33 and control unit 34, described heating jacket 31 is wrapped in the surrounding that described platinum leaks material passage 2, the side that this heating jacket 31 leaks material passage 2 near platinum is hollow 39, one side of leaking the material passage away from platinum is filled refractory brick 36, the heating rod 35 of many series connection evenly is set at the inwall of refractory brick, 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 and leaks between material passage 2 and heating jacket 3, the other end connects described control unit 34, described control unit 34 is controlled heating power supply 32.
Platinum in the present embodiment leaks expects that pipe and the circular opening for feed of platinum leakage material passage are fixedly linked, and forms a fillet, can guarantee the inflow leakage material platform that glass metal is relatively level and smooth herein, effectively is suppressed at and produces bubble herein.
The discharge port that platinum in the present embodiment leaks the material passage is flat mouth, and the upper plane of discharge port is parallel with lower plane.
The heating rod of the present embodiment is the molybdenum heating rod, and Heating temperature is 27～1700 ℃.
At first glass metal enters platinum and leaks material pipe 1 as shown in Figure 1, enters platinum through opening for feed 21 and leaks material passage 2, leaks material passage 2 is interior at the platinum of constant temperature and naturally trickle forward, finally by discharge port 24, flows into casting molds.
As shown in Figure 1, platinum leaks material pipe 1 and leaks material passage 2 with platinum and be fixedly welded on opening for feed 21, and the platinum adopted in this embodiment leaks 2 times of diameter of the leakage material pipe that material pipe 1 adopts for former pipe stream mode.
As shown in Figure 1, platinum leak on material passage 2 lower plane in echelon, sealing, leaking material pipe 1 connecting place with platinum is opening for feed 21, front end is rectangular discharge port 24.The both sides that this platinum leaks material passage 2 form by the first side wall 22 and the second sidewall 23, wherein the second sidewall 23 and 24 one-tenth 90 °, discharge port plane.Platinum in this embodiment leaks each face in the material passage and adopts identical platinum thickness, and platinum thickness is 1mm, the high 5mm in two side, the long 450mm of sidewall 22, the long 25mm of sidewall 23.
As shown in Figure 1, heating arrangements 3 consists of heating jacket 31, power supply 32, temperature sensor 33 and control unit 34.Wherein heating jacket 31 is wrapped in the surrounding that platinum leaks the material passage, in heating jacket, many heating rods with series connection are connected with power supply 32, temperature sensor 33 1 ends are arranged on platinum and leak between material passage 2 and heating jacket 3, the other end connection control unit 34, wherein control unit 34 is controlled heating power supply 32, can realize that by control unit platinum leaks free adjustment and the constant temperature of the temperature in the material passage, guarantee glass metal temperature field herein evenly, thereby effectively control devitrification of glass.
The local A that Fig. 2 is heating jacket 31 in Fig. 1
31-A
31cross-sectional view.As shown in the figure, the side that heating jacket 31 leaks material passage 2 near platinum is hollow 34, hollow inboard is that platinum leaks material conduit wall 37, refractory brick 36 is filled in the hollow outside, refractory brick external parcel iron sheet 38, the molybdenum heating rod 35 of many series connection evenly is set at the inwall of refractory brick, 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 opening for feed 21 that platinum in this embodiment leaks the material passage is fillet, and Fig. 3 is that in Fig. 1, opening for feed 21 is the cross-sectional view of fillet.Glass metal, after platinum leakage material pipe 1 enters fillet opening for feed 21, can guarantee that glass metal smoothly enters platinum and leaks the material passage.
The discharge port 24 that platinum in this embodiment leaks the material passage is flat mouth, and Fig. 4 is that in Fig. 1, discharge port 24 is the cross-sectional view of flat mouth.Glass metal leaks material passage 2 by platinum and enters casting mold finally by discharge port 24.This kind can well be controlled the glass metal flow velocity for the discharge port of the easy crystallization glass of low viscosity, reduces the defects such as striped because in casting process, glass metal flow velocity inequality causes.
Pour into a mould the saturating glasses for infrared use of germanium, gallate of large-sized low viscosity, easy crystallization by adopting the present embodiment.The leakage material temperature degree of glass metal is 1250 ℃, and before leaking material, 10min starts heating, and assurance can add heat leak material system to 1250 ℃ before the leakage material starts, and insulation to leakage material finishes.Detect glass defect through annealing, with the glassy phase ratio of the leakage material system cast of simply leaking before the material pipe, in glass, the defects such as crystallization, striped, phase-splitting and bubble obviously reduce, and through long statistics, find that yield rate is up to more than 95.7%.
The inboard lower rim that platinum in embodiment 2 leaks the discharge port 24 of material passage adds a triangular prism projection 25, other positions are as the system and device of embodiment 1, Fig. 5 is the cross-sectional view that in Fig. 1, the inboard lower rim of discharge port 24 adds a triangular prism projection 25, wherein the bottom surface of triangular prism is that isoceles triangle is capable, the acute angle that isoceles triangle is capable is 30 °, and height is 2mm.
Pour into a mould the large-sized low viscosity as formed with sample ingredient in embodiment 1, the saturating glasses for infrared use of germanium, gallate of easy crystallization by the present embodiment, leak material process and later stage thermal treatment constant, the defects such as the crystallization in glass, striped, phase-splitting and bubble can be effectively controlled equally after testing, and its yield rate can be up to more than 96.2%.
Embodiment 3
Pour into a mould by the present embodiment the tellurate glass that viscosity is less, the leakage material temperature degree of glass is 900 ℃, and before the leakage material, 10min starts to heat, and assurance can add heat leak material system to 900 ℃ before the beginning of leakage material, and extremely leakage material end of insulation, and later stage thermal treatment is constant.With the glassy phase ratio that simple leakage material system of leaking the material pipe is poured into a mould before, in glass, the long striped of seeing obviously reduces, and the yield rate of glass can reach more than 82.6%.
Embodiment 4
Pour into a mould fluorine, tellurate glass by the present embodiment, the leakage material temperature degree of glass is 850 ℃, and before the leakage material, 10min starts to heat, and assurance can add heat leak material system to 850 ℃ before the beginning of leakage material, and extremely leakage material end of insulation, and later stage thermal treatment is constant.With the glass of cast before, compare, in glass, long defect of seeing obviously reduces, and the yield rate of glass can reach more than 87.3%.
Claims (5)
1. the leakage material system of the easy crystallization glass of low viscosity, be characterised in that this system comprises that platinum leaks material pipe (1), platinum leaks material passage (2) and heating arrangements (3), 1.5～3.5 times of the diameter that the diameter that described platinum leaks material pipe (1) is the leakage material pipe that adopts of former pipe stream mode, described platinum leaks expects that passage (2) is one and comprises circular opening for feed (21), rectangular discharge port (24) becomes the leakage material passage of the trapezoidal sealing of standard with top and bottom, these both sides of leaking the material passage form by the first side wall (22) and the second sidewall (23), described the second sidewall (23) becomes 90 ° with described discharge port (24), described heating arrangements (3) comprises heating jacket (31), power supply (32), temperature sensor (33) and control unit (34), described heating jacket (31) is wrapped in the surrounding that described platinum leaks material passage (2), the side that this heating jacket (31) leaks material passage (2) near platinum is hollow (39), one side of leaking the material passage away from platinum is filled refractory brick (36), the heating rod (35) of many series connection evenly is set at the inwall of refractory brick, 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 and leaks between material passage (2) and heating jacket (3), the other end connects described control unit (34), described control unit (34) is controlled heating power supply (32).
2. the leakage material system of the easy crystallization glass of low viscosity according to claim 1 is characterized in that: it is a fillet (21) with the junction that described platinum leaks material passage (2) that described platinum leaks material pipe (1).
3. the leakage material system of the easy crystallization glass of low viscosity according to claim 1 is characterized in that: the discharge port (24) that described platinum leaks material passage (2) is flat mouth, and the upper plane of discharge port (24) is parallel with lower plane.
4. the leakage material system of the easy crystallization glass of low viscosity according to claim 1 is characterized in that: the inboard lower rim that described platinum leaks the discharge port (24) of material passage (2) adds a triangular prism projection (25).
5. the leakage material system of the easy crystallization glass of low viscosity according to claim 1, it is characterized in that: described heating rod (35) is carbon-point or molybdenum bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 true CN103496842A (en) | 2014-01-08 |
| CN103496842B CN103496842B (en) | 2016-06-08 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105271639A (en) * | 2015-10-14 | 2016-01-27 | 湖北新华光信息材料有限公司 | Crystallization-preventing 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 |
| CN111574033A (en) * | 2020-05-15 | 2020-08-25 | 南通市国光光学玻璃有限公司 | Low-viscosity optical glass dynamic supplement type leaking molding process |
| CN111620550A (en) * | 2020-05-29 | 2020-09-04 | 湖北新华光信息材料有限公司 | Low-melting-point optical glass forming device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105271639A (en) * | 2015-10-14 | 2016-01-27 | 湖北新华光信息材料有限公司 | Crystallization-preventing 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 |
| CN111574033A (en) * | 2020-05-15 | 2020-08-25 | 南通市国光光学玻璃有限公司 | Low-viscosity optical glass dynamic supplement type leaking molding process |
| 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 |
| CN111620550A (en) * | 2020-05-29 | 2020-09-04 | 湖北新华光信息材料有限公司 | Low-melting-point optical glass forming device |
| 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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| CN103496842B (en) | 2016-06-08 |
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