CN112476072A - Preparation method of optical glass with high light transmittance and high stability - Google Patents
Preparation method of optical glass with high light transmittance and high stability Download PDFInfo
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- CN112476072A CN112476072A CN202011466943.5A CN202011466943A CN112476072A CN 112476072 A CN112476072 A CN 112476072A CN 202011466943 A CN202011466943 A CN 202011466943A CN 112476072 A CN112476072 A CN 112476072A
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- optical glass
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- machine
- tempering
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- 239000005304 optical glass Substances 0.000 title claims abstract description 159
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 238000002834 transmittance Methods 0.000 title claims abstract description 17
- 238000005498 polishing Methods 0.000 claims abstract description 70
- 229910000420 cerium oxide Inorganic materials 0.000 claims abstract description 22
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims abstract description 22
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910001947 lithium oxide Inorganic materials 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 35
- 238000005496 tempering Methods 0.000 claims description 25
- 238000005520 cutting process Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 18
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 16
- 238000003908 quality control method Methods 0.000 claims description 16
- 238000004140 cleaning Methods 0.000 claims description 14
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 14
- 238000000227 grinding Methods 0.000 claims description 9
- 230000002950 deficient Effects 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 8
- 238000003801 milling Methods 0.000 claims description 8
- 235000010333 potassium nitrate Nutrition 0.000 claims description 8
- 239000004323 potassium nitrate Substances 0.000 claims description 8
- 239000004576 sand Substances 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 5
- 238000007650 screen-printing Methods 0.000 claims description 5
- 238000004026 adhesive bonding Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 3
- 239000010431 corundum Substances 0.000 claims description 2
- 229910052593 corundum Inorganic materials 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims 2
- 238000007517 polishing process Methods 0.000 abstract description 10
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 239000011521 glass Substances 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 6
- 229910010271 silicon carbide Inorganic materials 0.000 description 6
- 238000004383 yellowing Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000087 laser glass Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 208000001491 myopia Diseases 0.000 description 1
- 230000004379 myopia Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000013082 photovoltaic technology Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
- B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
- B44B1/00—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled three-dimensionally for making single sculptures or models
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
- B44B3/00—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two- dimensionally for carving, engraving, or guilloching shallow ornamenting or markings
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/02—Tempering or quenching glass products using liquid
- C03B27/03—Tempering or quenching glass products using liquid the liquid being a molten metal or a molten salt
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
-
- 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
- C03C23/00—Other surface treatment of glass not in the form of fibres or filaments
- C03C23/0075—Cleaning of glass
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Surface Treatment Of Glass (AREA)
- Glass Compositions (AREA)
Abstract
The invention relates to a preparation method of optical glass with high light transmittance and high stability. According to the invention, the polishing process and the components of the polishing agent in the traditional optical glass preparation process are improved, the lithium oxide with a proper amount is added on the basis of the conventional cerium oxide, and the secondary polishing process is adopted, so that the light transmittance and the stability of the finished optical glass are obviously improved, and the preparation process is simple, low in production cost and suitable for industrial large-scale production.
Description
Technical Field
The invention belongs to the technical field of optics, and particularly relates to a preparation method of optical glass with high light transmittance and high stability.
Background
Optical glass refers to glass that can change the direction of light propagation and can 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.
Optical glass is a fundamental and important component of the photovoltaic technology industry. Particularly, after the 90 s of the 20 th century, along with the continuous fusion of optics, electronic information science and new material science, the application of optical glass as a photoelectronic base material in three fields of optical transmission, optical storage and photoelectric display is more rapid and rapid, and the optical glass becomes one of the basic conditions for the development of social informatization, particularly photoelectric information technology. The optical glass is prepared by mainly using high-quality quartz sand as a main material and properly adding auxiliary materials.
With the development of science and technology, optical glass is widely used, for example, for manufacturing optical instruments such as cameras, video cameras, telescopes, and daily optical articles such as myopia glasses and presbyopic glasses, and the applications in these fields usually have higher requirements on refractive index, dispersion ratio, precision, light transmittance, chemical stability, and the like of the optical glass. However, in the actual production and application process, the quality of the prepared optical glass finished product is often uneven due to the difference of the polishing agent and the polishing process, and the problems of low light transmittance, poor stability, easy aging and yellowing and the like occur, so that the application of the optical glass finished product in some high-precision fields is greatly limited.
Disclosure of Invention
The invention aims to solve the problems of low precision, poor weather resistance and the like in the preparation process of the optical glass in the prior art, and improves the type of a polishing agent and the polishing process in the polishing process of the optical glass, so that the light transmittance of the finished optical glass is obviously improved, the stability of the finished optical glass is improved, and meanwhile, the preparation process is simple, the production cost is low, and the method is suitable for industrial large-scale production.
In order to achieve the above purpose, the present invention is realized by the following means:
the invention provides a preparation method of optical glass with high light transmittance and high stability, which comprises the following steps:
(1) cutting the optical glass into a preset size required by a drawing through a cutting machine, and then chamfering on a sand wheel of the cutting machine;
(2) finely grinding the cut optical glass;
(3) putting the finely ground optical glass into a polishing machine, and performing pre-polishing on the optical glass by using a polishing agent;
(4) putting the polished optical glass into an ultrasonic cleaning machine for cleaning;
(5) putting the cleaned optical glass into a polishing machine again, and further polishing the optical glass by using a polishing agent to remove impurities and bubbles with uneven surfaces on the optical glass; carrying out QC (quality control) inspection on the pre-polished optical glass, and removing defective products;
(6) putting the optical glass qualified after secondary polishing into an ultrasonic cleaning machine for cleaning;
(7) putting the optical glass cleaned in the step (6) on an engraving and milling machine to be manufactured into a shape required by a drawing;
(8) tempering the optical glass in a tempering pot to increase the surface hardness of the optical glass;
(9) finished product warehousing procedure: and (5) detecting the finished optical glass, and warehousing qualified products.
Preferably, step (2) is performed by using corundum.
Preferably, the polishing agent in step (3) comprises cerium oxide and a solvent.
Preferably, the concentration of cerium oxide in step (3) is 1.08-1.12%.
Preferably, the solvent in step (3) is selected from water.
Preferably, the washing time in step (4) is 5 to 10 minutes.
Preferably, the polishing agent in step (5) comprises cerium oxide, lithium oxide and a solvent.
Preferably, in the step (5), the concentration of the cerium oxide is 1.08 to 1.12%, and the concentration of the lithium oxide is 0.05 to 0.08%.
Preferably, the solvent in step (5) is selected from water.
Preferably, the washing time in step (6) is 10 to 30 minutes.
Preferably, the step (8) uses potassium nitrate to perform the toughening operation, the toughening temperature is 415-450 ℃, and the toughening time can be adjusted according to the requirement on the hardness of the optical glass.
Optionally, after the optical glass is tempered in the step (8), an ink screen printing operation can be further performed, wherein the ink screen printing operation is performed by a semi-automatic or manual screen printing machine.
Optionally, after the optical glass is subjected to the ink screen printing operation, a gluing operation may be further performed, specifically: gluing a plurality of optical glasses into a shape required by a drawing by using glue, and then baking the optical glasses in a UV lamp curing oven to accelerate the curing speed of the glue; the illumination intensity of the UV lamp and the baking temperature and time are determined according to the selection of the glue and the stability of the optical glass.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the polishing process and the components of the polishing agent in the traditional optical glass preparation process are improved, the lithium oxide with a proper amount is added on the basis of the conventional cerium oxide, and the secondary polishing process is adopted, so that the light transmittance and the stability of the finished optical glass are obviously improved, and the preparation process is simple, low in production cost and suitable for industrial large-scale production.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
A preparation method of optical glass with high light transmittance and high stability comprises the following steps:
(1) cutting the optical glass into a preset size required by a drawing through a cutting machine, and then chamfering on a sand wheel of the cutting machine;
(2) finely grinding the cut optical glass by using carborundum;
(3) putting the finely ground optical glass into a polishing machine, and performing pre-polishing on the optical glass by using a polishing agent; the polishing agent comprises 1.08% by mass of cerium oxide and the balance of water;
(4) putting the polished optical glass into an ultrasonic cleaning machine for cleaning for 5 minutes;
(5) putting the cleaned optical glass into a polishing machine again, and further polishing the optical glass by using a polishing agent to remove impurities and bubbles with uneven surfaces on the optical glass; carrying out QC (quality control) inspection on the pre-polished optical glass, and removing defective products; the polishing agent comprises 1.08% of cerium oxide and 0.05% of lithium oxide by mass percentage, and the balance of water;
(6) putting the optical glass qualified after secondary polishing into an ultrasonic cleaning machine for cleaning for 10 minutes;
(7) putting the optical glass cleaned in the step (6) on an engraving and milling machine to be manufactured into a shape required by a drawing;
(8) tempering the optical glass in a tempering pot by using potassium nitrate at the tempering temperature of 415 ℃ so as to increase the surface hardness of the optical glass;
(9) finished product warehousing procedure: and (5) detecting the finished optical glass, and warehousing qualified products.
Example 2
A preparation method of optical glass with high light transmittance and high stability comprises the following steps:
(1) cutting the optical glass into a preset size required by a drawing through a cutting machine, and then chamfering on a sand wheel of the cutting machine;
(2) finely grinding the cut optical glass by using carborundum;
(3) putting the finely ground optical glass into a polishing machine, and performing pre-polishing on the optical glass by using a polishing agent; the polishing agent comprises 1.1% by mass of cerium oxide, and the balance of water;
(4) putting the polished optical glass into an ultrasonic cleaning machine for cleaning for 8 minutes;
(5) putting the cleaned optical glass into a polishing machine again, and further polishing the optical glass by using a polishing agent to remove impurities and bubbles with uneven surfaces on the optical glass; carrying out QC (quality control) inspection on the pre-polished optical glass, and removing defective products; the polishing agent comprises 1.10% of cerium oxide and 0.06% of lithium oxide by mass percent, and the balance of water;
(6) putting the optical glass qualified after secondary polishing into an ultrasonic cleaning machine for cleaning for 20 minutes;
(7) putting the optical glass cleaned in the step (6) on an engraving and milling machine to be manufactured into a shape required by a drawing;
(8) tempering the optical glass in a tempering pot by using potassium nitrate at the tempering temperature of 430 ℃ so as to increase the surface hardness of the optical glass;
(9) finished product warehousing procedure: and (5) detecting the finished optical glass, and warehousing qualified products.
Example 3
A preparation method of optical glass with high light transmittance and high stability comprises the following steps:
(1) cutting the optical glass into a preset size required by a drawing through a cutting machine, and then chamfering on a sand wheel of the cutting machine;
(2) finely grinding the cut optical glass by using carborundum;
(3) putting the finely ground optical glass into a polishing machine, and performing pre-polishing on the optical glass by using a polishing agent; the polishing agent comprises 1.12% by mass of cerium oxide, and the balance of water;
(4) putting the polished optical glass into an ultrasonic cleaning machine for cleaning for 10 minutes;
(5) putting the cleaned optical glass into a polishing machine again, and further polishing the optical glass by using a polishing agent to remove impurities and bubbles with uneven surfaces on the optical glass; carrying out QC (quality control) inspection on the pre-polished optical glass, and removing defective products; the polishing agent comprises 1.10% of cerium oxide and 0.08% of lithium oxide by mass percentage, and the balance of water;
(6) putting the optical glass qualified after secondary polishing into an ultrasonic cleaning machine for cleaning for 30 minutes;
(7) putting the optical glass cleaned in the step (6) on an engraving and milling machine to be manufactured into a shape required by a drawing;
(8) tempering the optical glass in a tempering pot by using potassium nitrate at the tempering temperature of 450 ℃ so as to increase the surface hardness of the optical glass;
(9) finished product warehousing procedure: and (5) detecting the finished optical glass, and warehousing qualified products.
Comparative example 1
A method for preparing optical glass comprises the following steps:
(1) cutting the optical glass into a preset size required by a drawing through a cutting machine, and then chamfering on a sand wheel of the cutting machine;
(2) finely grinding the cut optical glass by using carborundum;
(3) putting the finely ground optical glass into a polishing machine, and polishing the optical glass by using a polishing agent; removing impurities and bubbles with uneven surfaces of the optical glass; carrying out QC (quality control) inspection on the pre-polished optical glass, and removing defective products; the polishing agent comprises 1.08% by mass of cerium oxide and the balance of water;
(4) putting the polished optical glass into an ultrasonic cleaning machine for cleaning for 5 minutes;
(5) putting the optical glass cleaned in the step (4) on an engraving and milling machine to be manufactured into a shape required by a drawing;
(6) tempering the optical glass in a tempering pot by using potassium nitrate at the tempering temperature of 415 ℃ so as to increase the surface hardness of the optical glass;
(7) finished product warehousing procedure: and (5) detecting the finished optical glass, and warehousing qualified products.
Comparative example 2
A method for preparing optical glass comprises the following steps:
(1) cutting the optical glass into a preset size required by a drawing through a cutting machine, and then chamfering on a sand wheel of the cutting machine;
(2) finely grinding the cut optical glass by using carborundum;
(3) putting the finely ground optical glass into a polishing machine, polishing the optical glass by using a polishing agent, and removing impurities and bubbles with uneven surfaces on the optical glass; carrying out QC (quality control) inspection on the pre-polished optical glass, and removing defective products; the polishing agent comprises 1.08% of cerium oxide and 0.05% of lithium oxide by mass percentage, and the balance of water;
(4) putting the polished optical glass into an ultrasonic cleaning machine for cleaning for 5 minutes;
(5) putting the optical glass cleaned in the step (4) on an engraving and milling machine to be manufactured into a shape required by a drawing;
(6) tempering the optical glass in a tempering pot by using potassium nitrate at the tempering temperature of 415 ℃ so as to increase the surface hardness of the optical glass;
(7) finished product warehousing procedure: and (5) detecting the finished optical glass, and warehousing qualified products.
Comparative example 3
A method for preparing optical glass comprises the following steps:
(1) cutting the optical glass into a preset size required by a drawing through a cutting machine, and then chamfering on a sand wheel of the cutting machine;
(2) finely grinding the cut optical glass by using carborundum;
(3) putting the finely ground optical glass into a polishing machine, and performing pre-polishing on the optical glass by using a polishing agent; the polishing agent comprises 1.08% by mass of cerium oxide and the balance of water;
(4) putting the polished optical glass into an ultrasonic cleaning machine for cleaning for 5 minutes;
(5) putting the cleaned optical glass into a polishing machine again, and further polishing the optical glass by using a polishing agent to remove impurities and bubbles with uneven surfaces on the optical glass; carrying out QC (quality control) inspection on the pre-polished optical glass, and removing defective products; the polishing agent comprises 1.08% by mass of cerium oxide and the balance of water;
(6) putting the optical glass qualified after secondary polishing into an ultrasonic cleaning machine for cleaning for 10 minutes;
(7) putting the optical glass cleaned in the step (6) on an engraving and milling machine to be manufactured into a shape required by a drawing;
(8) tempering the optical glass in a tempering pot by using potassium nitrate at the tempering temperature of 415 ℃ so as to increase the surface hardness of the optical glass;
(9) finished product warehousing procedure: and (5) detecting the finished optical glass, and warehousing qualified products.
Verification example 1
The optical glasses prepared in examples 1 to 3 and comparative examples 1 to 3 were respectively subjected to the performance test, and the test results are shown in table 1 below.
TABLE 1 results of testing the Properties of optical glasses of examples 1 to 3 and comparative examples 1 to 3
| Surface roughness Rz (. mu.m) | Visible light transmittance (%) | Coefficient of dispersion | Yellowing of the color of the product after 12 months of ultraviolet irradiation | |
| Example 1 | 0.011 | 99.0 | 42.9 | Without change |
| Example 2 | 0.009 | 98.8 | 40.7 | Without change |
| Example 3 | 0.013 | 99.1 | 43.1 | Without change |
| Comparative example 1 | 0.036 | 89.4 | 25.7 | Yellowing of |
| Comparative example 2 | 0.028 | 91.2 | 26.1 | Yellowing of |
| Comparative example 3 | 0.027 | 92.5 | 30.8 | Yellowing of |
The results show that the optical glasses prepared according to examples 1 to 3 of the present invention are significantly superior to those of comparative examples 1 to 3 in terms of surface roughness, visible light transmittance, dispersion coefficient and yellowing resistance. The reason is that comparative example 1 adopts only a single polishing process, and the polishing agent only uses cerium oxide, and comparative example 2 has an unsatisfactory effect despite the addition of lithium oxide to the polishing agent; comparative example 3, although the secondary polishing process was used, only cerium oxide was used as a polishing agent, and thus there was a significant gap in the properties and stability of the optical glass prepared in comparison with the present invention. Therefore, the optical glass obtained by the preparation process disclosed by the invention has the advantages that the light transmittance and stability of the finished optical glass are remarkably improved due to the improvement of the polishing process and the components of the polishing agent, and meanwhile, the preparation process is simple, the production cost is low, and the preparation process is suitable for industrial large-scale production.
The above detailed description section specifically describes the analysis method according to the present invention. It should be noted that the above description is only for the purpose of helping those skilled in the art better understand the method and idea of the present invention, and not for the limitation of the related contents. The present invention may be appropriately adjusted or modified by those skilled in the art without departing from the principle of the present invention, and the adjustment and modification also fall within the scope of the present invention.
Claims (10)
1. A preparation method of optical glass with high light transmittance and high stability comprises the following steps:
(1) cutting the optical glass into a preset size required by a drawing through a cutting machine, and then chamfering on a sand wheel of the cutting machine;
(2) finely grinding the cut optical glass;
(3) putting the finely ground optical glass into a polishing machine, and performing pre-polishing on the optical glass by using a polishing agent;
(4) putting the polished optical glass into an ultrasonic cleaning machine for cleaning;
(5) putting the cleaned optical glass into a polishing machine again, and further polishing the optical glass by using a polishing agent to remove impurities and bubbles with uneven surfaces on the optical glass; carrying out QC (quality control) inspection on the pre-polished optical glass, and removing defective products;
(6) putting the optical glass qualified after secondary polishing into an ultrasonic cleaning machine for cleaning;
(7) putting the optical glass cleaned in the step (6) on an engraving and milling machine to be manufactured into a shape required by a drawing;
(8) tempering the optical glass in a tempering pot to increase the surface hardness of the optical glass;
(9) finished product warehousing procedure: and (5) detecting the finished optical glass, and warehousing qualified products.
2. The production method according to claim 1, wherein the fine grinding operation is performed using corundum in step (2).
3. The production method according to claim 1, wherein the polishing agent in the step (3) comprises cerium oxide and a solvent.
4. The method according to claim 3, wherein the cerium oxide concentration in the step (3) is 1.08 to 1.12%.
5. The production method according to claim 1, wherein the washing time in the step (4) is 5 to 10 minutes.
6. The method according to claim 1, wherein the polishing agent in the step (5) comprises cerium oxide, lithium oxide, and a solvent.
7. The method according to claim 6, wherein the cerium oxide concentration in the step (5) is 1.08 to 1.12%, and the lithium oxide concentration is 0.05 to 0.08%.
8. The production method as claimed in claim 1, wherein the tempering operation is performed using potassium nitrate in the step (8), and the tempering temperature is 415 ℃ to 450 ℃.
9. The process according to any one of claims 1 to 8, characterized in that, optionally, after the tempering of the optical glass in step (8), a further ink-screening operation is carried out by means of a semi-automatic or manual screen-printing machine.
10. Preparation method according to any one of claims 1 to 8, characterized in that, optionally, after the ink-screening operation of the optical glass, a gluing operation can be further carried out, in particular: and gluing the optical glass into the shape required by the drawing by using glue, and then baking in a UV lamp curing oven to accelerate the curing speed of the glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011466943.5A CN112476072B (en) | 2020-12-14 | 2020-12-14 | Preparation method of optical glass with high light transmittance and high stability |
Applications Claiming Priority (1)
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| CN102060443A (en) * | 2010-11-30 | 2011-05-18 | 湖北合和微晶玻璃有限公司 | Black transparent microcrystalline glass for fire-polishing wave oven and preparation method thereof |
| CN103128624A (en) * | 2011-11-22 | 2013-06-05 | 深圳市常兴金刚石磨具有限公司 | Machining technique of glass panel |
| CN104178033A (en) * | 2013-05-27 | 2014-12-03 | 天津西美半导体材料有限公司 | Nano cerium oxide polishing liquid composition |
| US20150225283A1 (en) * | 2014-02-10 | 2015-08-13 | Hony Glass Technology Co., Ltd. | Glass Substrate and Method of Manufacturing the Same |
| CN108789878A (en) * | 2018-07-12 | 2018-11-13 | 上海侦纬电子设备有限公司 | A kind of processing method of high reflecting rate glass lens |
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| CN101177602A (en) * | 2006-11-10 | 2008-05-14 | 富士胶片株式会社 | Lapping liquid |
| CN102060443A (en) * | 2010-11-30 | 2011-05-18 | 湖北合和微晶玻璃有限公司 | Black transparent microcrystalline glass for fire-polishing wave oven and preparation method thereof |
| CN103128624A (en) * | 2011-11-22 | 2013-06-05 | 深圳市常兴金刚石磨具有限公司 | Machining technique of glass panel |
| CN104178033A (en) * | 2013-05-27 | 2014-12-03 | 天津西美半导体材料有限公司 | Nano cerium oxide polishing liquid composition |
| US20150225283A1 (en) * | 2014-02-10 | 2015-08-13 | Hony Glass Technology Co., Ltd. | Glass Substrate and Method of Manufacturing the Same |
| CN108789878A (en) * | 2018-07-12 | 2018-11-13 | 上海侦纬电子设备有限公司 | A kind of processing method of high reflecting rate glass lens |
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