CN113443815A - Flow type rapid preparation process of high-refractive-index optical glass - Google Patents
Flow type rapid preparation process of high-refractive-index optical glass Download PDFInfo
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- CN113443815A CN113443815A CN202110698924.3A CN202110698924A CN113443815A CN 113443815 A CN113443815 A CN 113443815A CN 202110698924 A CN202110698924 A CN 202110698924A CN 113443815 A CN113443815 A CN 113443815A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
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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
- C03B19/02—Other methods of shaping glass by casting molten glass, e.g. injection moulding
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B25/00—Annealing glass products
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
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Abstract
The invention discloses a flow type rapid preparation process of high-refractive index optical glass, which belongs to the technical field of optical glass, and can flow and heat raw materials by introducing a flow disc, on one hand, the heating effect is concentrated and excellent, the temperature distribution of the feed liquid in a flow state is more uniform, the raw materials can be rapidly melted in a shorter time, on the other hand, an external magnetic field is utilized to attract a fluxing crane, the fluxing crane is forced to extend into the feed liquid to extrude the incompletely melted raw materials and is fully contacted with the bottom surface of the flow disc to realize full heating, the melting effect of the raw materials is judged by utilizing the continuity of light transmission, the melting efficiency and effect of the raw materials can be greatly improved, the complete melting of the stripped feed liquid during stripping molding can be ensured, compared with the prior art, the flow type rapid preparation process can greatly shorten the melting time of the raw materials, the smelting effect of the raw materials is improved, and the optical glass has higher refractive index after being formed.
Description
Technical Field
The invention relates to the technical field of optical glass, in particular to a flow type rapid preparation process of high-refractive-index optical glass.
Background
Optical glasses are glasses that change the direction of light propagation and change the relative spectral distribution of ultraviolet, visible, or infrared light. Optical glass in the narrow sense means colorless optical glass; the optical glass in a broad sense also includes colored optical glass, laser glass, quartz optical glass, radiation-resistant glass, ultraviolet infrared optical glass, fiber optical glass, acousto-optic glass, magneto-optic glass and photochromic glass. The optical glass can be used for manufacturing lenses, prisms, reflectors, windows and the like in optical instruments. Components made of optical glass are critical elements in optical instruments.
With the rapid development of the fields of precision optical instruments, optical information communication and optoelectronic products, the demand and the requirement on optical glass with excellent performance are higher and higher, and in optical design and optical communication, the optical glass with the refractive index of 1.9-2.2 has profound significance for simplifying an optical system, improving the imaging quality, further miniaturizing a mobile phone and a digital camera and improving the optical communication technology.
The raw materials need to be smelted in the preparation process of the existing optical glass, but on one hand, the smelting time is too long in order to ensure the smelting effect, so that the preparation efficiency of the optical glass is greatly reduced, on the other hand, the heating effect of the traditional smelting mode is not concentrated enough, the raw materials in the molten material liquid are often incompletely smelted, the difficulty of subsequent treatment can be greatly reduced for granular raw materials which are not completely smelted, and the quality of the optical glass can be reduced once the granular raw materials are not well treated.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a flow type rapid preparation process of high-refractive index optical glass, which can flow and heat raw materials by introducing a flow disc, has centralized and excellent heating effect, more uniform temperature distribution of the liquid material in a flow state and can rapidly melt the raw materials in a shorter time, and attracts a fluxing crane by using an external magnetic field to force the fluxing crane to extend into the liquid material to extrude the incompletely melted raw materials and press the incomplete melted raw materials to fully contact with the bottom surface of the flow disc so as to fully heat the incompletely melted raw materials, judges the melting effect of the raw materials by using the continuity of light transmission, can greatly improve the melting efficiency and effect of the raw materials finally, ensures that the stripping liquid material is completely melted during stripping molding, and compared with the prior art, the flow type rapid preparation process can greatly shorten the melting time of the raw materials, the smelting effect of the raw materials is improved, and the optical glass has higher refractive index after being formed.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A flow type rapid preparation process of high-refractive-index optical glass comprises the following steps:
s1, mixing silica, lanthanum oxide, boron oxide, potassium oxide, calcium oxide, aluminum oxide and sodium oxide, placing the mixture in a hollow and inclined flow disc, and heating the mixture below the flow disc to melt the mixture at the temperature of 1400 ℃ and 1450 ℃ to obtain glass feed liquid;
s2, applying a magnetic field below the flow disc to force a plurality of fluxing hangers on the upper side of the flow disc to extend into the glass material liquid, and extruding the granular or blocky raw materials which are not completely melted to be tightly attached to the bottom surface of the flow disc for heating and melting;
s3, when strong light is irradiated above the flow disc and no light penetrates into the flow disc, the raw material is molten and qualified, and the glass material liquid slides down through the flow disc and enters the corundum container;
s4, continuously melting at 1400-1600 ℃ for 2-4h, adding nano titanium dioxide and a dispersing agent in the glass melting process, uniformly stirring and then standing for 1 h;
s5, pouring the glass feed liquid into a preheated mold, and annealing the glass at 30-700 ℃ to obtain the finished product of the optical glass.
Further, the raw materials of the optical glass comprise the following components in percentage by mole: 15 to 17 percent of silicon dioxide, 31 to 33 percent of lanthanum oxide, 22 to 25 percent of boron oxide, 5 to 10 percent of nano titanium dioxide, 5 to 10 percent of aluminum oxide, 5 to 8 percent of sodium oxide, 0 to 3 percent of potassium oxide, 1 to 5 percent of calcium oxide and 0 to 5 percent of dispersant.
Further, the dispersing agent is fish oil, cellulose and derivatives thereof, sodium dodecyl sulfate, methyl amyl alcohol or polyacrylamide.
Furthermore, the fluxing crane comprises a fixed top ball, a migration magnetic rod and a fluxing pressure ball, the fixed top ball is embedded and connected to the upper end of the flowing disc, the migration magnetic rod is inserted into the fixed top ball, the fluxing pressure ball is connected to the lower end of the migration magnetic rod, and the fluxing pressure ball is forced to descend into the glass material liquid to extrude the raw material which is not completely molten through attraction of a magnetic field to the migration magnetic rod, so that the raw material sinks to the bottom surface of the flowing disc to be fully heated and molten.
Further, fixed knob includes shading hemisphere, air-blowing hemisphere and many elasticity wire drawing, shading hemisphere and air-blowing hemisphere upper and lower symmetric connection, elasticity wire drawing evenly connects between shading hemisphere and migration magnetic pole, and the shading hemisphere plays the guide effect to migration magnetic pole migration orbit, and the air-blowing hemisphere can blow off the air after receiving the extrusion of boosting pressure ball, and the glass feed liquid on the boosting pressure ball drops the recovery with higher speed, reduces the waste of glass feed liquid, and the elasticity wire drawing then is used for the restoration to the migration magnetic pole after the magnetic field is cancelled.
Furthermore, the shading hemisphere is made of shading materials and is of a hollow structure, powdery shading materials are filled in the shading hemisphere, the air-blowing hemisphere is made of elastic porous light-transmitting materials, after the migration magnetic rod migrates, if the fluxing pressure ball can smoothly contact the bottom surface of the flowing plate, the glass material liquid hardly contains raw materials which are not completely melted, at the moment, the migration magnetic rod also enters the shading hemisphere and is shielded by the shading materials, and when the fluxing pressure ball extrudes the raw materials which are not completely melted, part of the migration magnetic rod still extends out of the shading hemisphere and can guide light into the flowing plate.
Further, the migration magnetic pole includes magnetism end, leaded light end and extension end, and magnetism end, leaded light end and extension end from last to connecting gradually down, and the magnetism end has magnetism and can respond to magnetic field, and the leaded light end then is used for the conduction in the external light flow disc, and the extension end plays the effect that extends to in the glass feed liquid.
Furthermore, the light guide end is made of light guide materials, the extension end is made of high-temperature-resistant materials, and the total length of the migration magnetic rod and the fluxing pressing ball is consistent with the height of the inner cavity of the flow disc.
Furthermore, the fluxing and pressing ball is made of a high-temperature-resistant metal heat conduction material, the metal heat conduction material is preferably tungsten-copper alloy, the fluxing and pressing ball is high-temperature-resistant and corrosion-resistant and has excellent heat conductivity, and the heating and melting effect of the glass material liquid can be improved.
Further, the preheating temperature of the mold in the step S5 is 1350-.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) the scheme can heat the raw materials in a flowing mode by introducing the flowing disc, on one hand, the heating effect is concentrated and excellent, the temperature distribution of the feed liquid in the flowing state is more uniform, the raw materials can be rapidly melted in a short time, on the other hand, the external magnetic field is utilized to attract the fluxing crane, the fluxing crane is forced to extend into the feed liquid to extrude the incompletely melted raw materials, the fluxing crane is fully contacted with the bottom surface of the flowing disc to achieve full heating, the melting effect of the raw materials is judged by utilizing the continuity of light transmission, the melting efficiency and effect of the raw materials can be greatly improved finally, the complete melting of the stripped feed liquid during stripping forming is guaranteed, compared with the prior art, the melting time of the raw materials can be greatly shortened, the melting effect of the raw materials is improved, and the optical glass has a higher refractive index after forming.
(2) The fluxing crane comprises a fixed jacking ball, a migration magnetic rod and a fluxing pressure ball, the fixed jacking ball is embedded and connected to the upper end of the flowing disc, the migration magnetic rod is inserted into the fixed jacking ball, the fluxing pressure ball is connected to the lower end of the migration magnetic rod, and the fluxing pressure ball is forced to descend into the glass material liquid to extrude raw materials which are not completely molten through attraction of a magnetic field to the migration magnetic rod, so that the raw materials sink to the bottom surface of the flowing disc to be sufficiently heated and molten.
(3) The fixed knob comprises a shading hemisphere, an air blowing hemisphere and a plurality of elastic drawn wires, the shading hemisphere and the air blowing hemisphere are symmetrically connected from top to bottom, the elastic drawn wires are uniformly connected between the shading hemisphere and the migration magnetic rod, the shading hemisphere plays a role in guiding the migration track of the migration magnetic rod, the air blowing hemisphere blows air after being extruded by the fluxing pressure ball, glass feed liquid on the fluxing pressure ball falls off and is recovered with acceleration, waste of the glass feed liquid is reduced, and the elastic drawn wires are used for resetting the migration magnetic rod after the magnetic field is cancelled.
(4) The shading hemisphere adopts the light-resistant material to make hollow structure, the shading hemisphere intussuseption is filled with powdered light-resistant material, the air-blowing hemisphere adopts elastic porous printing opacity material to make, if the fluxing pressure ball can contact the flow dish bottom surface smoothly after the migration magnetic pole migrates, then do not contain the complete raw materials of unmelting in the glass feed liquid almost, the migration magnetic pole also enters into and is sheltered from by the light-resistant material in the shading hemisphere this moment, when fluxing pressure ball extrudeed the complete raw materials of unmelting, the migration magnetic pole still partially extends outside the shading hemisphere, can lead-in light to the flow dish inside.
(5) The migration magnetic pole includes magnetism end, leaded light end and extension end, and magnetism end, leaded light end and extension end from last to connecting gradually down, and the magnetism end has magnetism and can respond to magnetic field, and the leaded light end then is used for conducting external light to the flow disk in, and the extension end plays the effect that extends to in the glass feed liquid.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a schematic structural view of a fluxing crane according to the present invention;
FIG. 3 is a cross-sectional view of the fluxing crane of the present invention in a normal condition;
FIG. 4 is a cross-sectional view of the fluxing crane of the present invention in a fluxing state;
FIG. 5 is a schematic structural diagram of the present invention showing the placement of fluxing microspheres;
FIG. 6 is a schematic structural diagram of a fluxing microsphere of the present invention.
The reference numbers in the figures illustrate:
1 fixed top ball, 11 shading hemispheres, 12 air blowing hemispheres, 13 elastic drawing wires, 2 migration magnetic rods, 21 magnetic ends, 22 light guide ends, 23 extension ends and 3 fluxing pressing balls.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1, a flow-type fast manufacturing process of high refractive index optical glass includes the following steps:
s1, mixing silica, lanthanum oxide, boron oxide, potassium oxide, calcium oxide, aluminum oxide and sodium oxide, placing the mixture in a hollow and inclined flow disc, and heating the mixture below the flow disc to melt the mixture at the temperature of 1400 ℃ and 1450 ℃ to obtain glass feed liquid;
s2, applying a magnetic field below the flow disc to force a plurality of fluxing hangers on the upper side of the flow disc to extend into the glass material liquid, and extruding the granular or blocky raw materials which are not completely melted to be tightly attached to the bottom surface of the flow disc for heating and melting;
s3, when strong light is irradiated above the flow disc and no light penetrates into the flow disc, the raw material is molten and qualified, and the glass material liquid slides down through the flow disc and enters the corundum container;
s4, continuously melting at 1400-1600 ℃ for 2-4h, adding nano titanium dioxide and a dispersing agent in the glass melting process, uniformly stirring and then standing for 1 h;
s5, pouring the glass feed liquid into a preheated mold, and annealing the glass at 30-700 ℃ to obtain the finished product of the optical glass.
The preheating temperature of the mold in the step S5 is 1350-.
The raw materials of the optical glass comprise the following components in percentage by mole: 15 to 17 percent of silicon dioxide, 31 to 33 percent of lanthanum oxide, 22 to 25 percent of boron oxide, 5 to 10 percent of nano titanium dioxide, 5 to 10 percent of aluminum oxide, 5 to 8 percent of sodium oxide, 0 to 3 percent of potassium oxide, 1 to 5 percent of calcium oxide and 0 to 5 percent of dispersant.
The dispersant is fish oil, cellulose and its derivatives, sodium dodecyl sulfate, methyl amyl alcohol or polyacrylamide.
Referring to fig. 2, the fluxing crane includes a fixed top ball 1, a transferring magnetic rod 2 and a fluxing pressure ball 3, the fixed top ball 1 is embedded and connected to the upper end of the flow tray, the transferring magnetic rod 2 is inserted into the fixed top ball 1, the fluxing pressure ball 3 is connected to the lower end of the transferring magnetic rod 2, and the fluxing pressure ball 3 is forced to descend into the glass material liquid to extrude the raw material which is not completely melted by the attraction of the magnetic field to the transferring magnetic rod 2, so that the raw material sinks to the bottom of the flow tray to be fully heated and melted.
Referring to fig. 3-4, the fixed top ball 1 includes a light-shielding hemisphere 11, an air-blowing hemisphere 12 and a plurality of elastic drawn wires 13, the light-shielding hemisphere 11 and the air-blowing hemisphere 12 are symmetrically connected up and down, the elastic drawn wires 13 are uniformly connected between the light-shielding hemisphere 11 and the migration magnetic rod 2, the light-shielding hemisphere 11 plays a role in guiding the migration track of the migration magnetic rod 2, the air-blowing hemisphere 12 blows air after being extruded by the fluxing pressure ball 3, so as to accelerate the falling and recovery of the glass material liquid on the fluxing pressure ball 3 and reduce the waste of the glass material liquid, and the elastic drawn wires 13 are used for resetting the migration magnetic rod 2 after the magnetic field is cancelled.
Shading hemisphere 11 adopts the light-resistant material to make hollow structure, shading hemisphere 11 intussuseption is filled with powdered light-resistant material, air-blowing hemisphere 12 adopts elastic porous printing opacity material to make, if fluxing pressure ball 3 can contact the flow set bottom surface smoothly after migration magnetic pole 2 migrates, then do not contain the complete raw materials of unmelted in the glass feed liquid hardly, migration magnetic pole 2 also enters into shading hemisphere 11 at this moment and is sheltered from by the light-resistant material, when fluxing pressure ball 3 extrudees the complete raw materials of unmelted, it still has 2 parts to extend outside shading hemisphere 11 to migrate the magnetic pole, can be with light leading-in to flow set inside.
Migration magnetic pole 2 includes magnetism end 21, leaded light end 22 and extends end 23, and magnetism end 21, leaded light end 22 and extend end 23 from last to connecting gradually down, and magnetism end 21 has magnetism and can respond to magnetic field, and leaded light end 22 then is used for conducting external light to the flow disk interior, extends end 23 and plays the effect that extends to in the glass feed liquid.
The light guide end 22 is made of light guide materials, the extension end 23 is made of high temperature resistant materials, and the total length of the migration magnetic rod 2 and the fluxing pressing ball 3 is consistent with the height of the inner cavity of the flow disc.
The fluxing pressing ball 3 is made of a high-temperature-resistant metal heat conduction material, the metal heat conduction material is preferably tungsten-copper alloy, and the fluxing pressing ball 3 has high temperature resistance, corrosion resistance and excellent heat conductivity and can improve the heating and melting effect of glass liquid.
The invention can heat the raw material in a flowing way by introducing the flow disc, on one hand, the heating effect is concentrated and excellent, the temperature distribution of the feed liquid in the flowing state is more uniform, the raw material can be melted quickly in a shorter time, on the other hand, the external magnetic field is utilized to attract the fluxing crane, the fluxing crane is forced to extend into the feed liquid to extrude the incompletely melted raw material, the fluxing crane is fully contacted with the bottom surface of the flow disc to realize full heating, the melting effect of the raw material is judged by utilizing the continuity of light transmission, the melting efficiency and effect of the raw material can be greatly improved, the complete melting of the stripped feed liquid during stripping forming is ensured, compared with the prior art, the invention can greatly shorten the melting time of the raw material, improve the melting effect of the raw material and has higher refractive index after optical glass forming.
Example 2:
in this embodiment, the fluxing crane on the flow tray may be replaced by fluxing microspheres, the particle size of the fluxing microspheres is smaller than that of the fluxing pressure balls 3, a large area of coverage may be achieved by magnetic field adsorption, and the fluxing microspheres may be attached to the raw material that is not completely melted and sink to the bottom surface of the flow tray for heating and melting, and at the same time, the fluxing microspheres may cause turbulence of the glass material liquid when moving, so that the heating effect is more uniform and effective.
The fluxing microspheres sequentially comprise a magnetic inner core, a heat insulation layer and a tungsten-copper heat conduction layer from inside to outside.
The above are merely preferred embodiments of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (10)
1. A flow type rapid preparation process of high-refractive-index optical glass is characterized by comprising the following steps: the method comprises the following steps:
s1, mixing silica, lanthanum oxide, boron oxide, potassium oxide, calcium oxide, aluminum oxide and sodium oxide, placing the mixture in a hollow and inclined flow disc, and heating the mixture below the flow disc to melt the mixture at the temperature of 1400 ℃ and 1450 ℃ to obtain glass feed liquid;
s2, applying a magnetic field below the flow disc to force a plurality of fluxing hangers on the upper side of the flow disc to extend into the glass material liquid, and extruding the granular or blocky raw materials which are not completely melted to be tightly attached to the bottom surface of the flow disc for heating and melting;
s3, when strong light is irradiated above the flow disc and no light penetrates into the flow disc, the raw material is molten and qualified, and the glass material liquid slides down through the flow disc and enters the corundum container;
s4, continuously melting at 1400-1600 ℃ for 2-4h, adding nano titanium dioxide and a dispersing agent in the glass melting process, uniformly stirring and then standing for 1 h;
s5, pouring the glass feed liquid into a preheated mold, and annealing the glass at 30-700 ℃ to obtain the finished product of the optical glass.
2. The flow-type rapid preparation process of high refractive index optical glass according to claim 1, characterized in that: the raw materials of the optical glass comprise the following components in percentage by mole: 15 to 17 percent of silicon dioxide, 31 to 33 percent of lanthanum oxide, 22 to 25 percent of boron oxide, 5 to 10 percent of nano titanium dioxide, 5 to 10 percent of aluminum oxide, 5 to 8 percent of sodium oxide, 0 to 3 percent of potassium oxide, 1 to 5 percent of calcium oxide and 0 to 5 percent of dispersant.
3. The flow-type rapid preparation process of high refractive index optical glass according to claim 2, characterized in that: the dispersing agent is fish oil, cellulose and derivatives thereof, sodium dodecyl sulfate, methyl amyl alcohol or polyacrylamide.
4. The flow-type rapid preparation process of high refractive index optical glass according to claim 1, characterized in that: the fluxing crane comprises a fixed jacking ball (1), a migration magnetic rod (2) and a fluxing pressure ball (3), wherein the fixed jacking ball (1) is embedded and connected to the upper end of the flow disc, the migration magnetic rod (2) is inserted into the fixed jacking ball (1), and the fluxing pressure ball (3) is connected to the lower end of the migration magnetic rod (2).
5. The flow-type rapid preparation process of high refractive index optical glass according to claim 4, characterized in that: fixed knob (1) is including shading hemisphere (11), air-blowing hemisphere (12) and many elasticity wire drawing (13), shading hemisphere (11) and air-blowing hemisphere (12) longitudinal symmetry connect, elasticity wire drawing (13) evenly connected is between shading hemisphere (11) and migration magnetic pole (2).
6. The flow-type rapid preparation process of high refractive index optical glass according to claim 5, characterized in that: shading hemisphere (11) adopt light-resistant material to make hollow structure, shading hemisphere (11) intussuseption is filled with powdered light-resistant material, air-blowing hemisphere (12) adopt elastic porous printing opacity material to make.
7. The flow-type rapid preparation process of high refractive index optical glass according to claim 4, characterized in that: the migration magnetic rod (2) comprises a magnetic end (21), a light guide end (22) and an extension end (23), and the magnetic end (21), the light guide end (22) and the extension end (23) are sequentially connected from top to bottom.
8. The flow-type rapid preparation process of high refractive index optical glass according to claim 4, characterized in that: the light guide end (22) is made of light guide materials, the extension end (23) is made of high-temperature-resistant materials, and the total length of the migration magnetic rod (2) and the fluxing pressure ball (3) is consistent with the height of an inner cavity of the flow disc.
9. The flow-type rapid preparation process of high refractive index optical glass according to claim 4, characterized in that: the fluxing and pressing ball (3) is made of high-temperature-resistant metal heat conduction material, and the metal heat conduction material is preferably tungsten-copper alloy.
10. The flow-type rapid preparation process of high refractive index optical glass according to claim 1, characterized in that: the preheating temperature of the mold in the step S5 is 1350-.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106219967A (en) * | 2016-07-28 | 2016-12-14 | 四川宇光光学玻璃有限公司 | A kind of optical glass having high refractive index and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106219967A (en) * | 2016-07-28 | 2016-12-14 | 四川宇光光学玻璃有限公司 | A kind of optical glass having high refractive index and preparation method thereof |
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| Title |
|---|
| 田英良: "《新编玻璃工艺学》", 31 August 2013 * |
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