CN113716881A - Production process of toughened glass lens - Google Patents
Production process of toughened glass lens Download PDFInfo
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- CN113716881A CN113716881A CN202111034938.1A CN202111034938A CN113716881A CN 113716881 A CN113716881 A CN 113716881A CN 202111034938 A CN202111034938 A CN 202111034938A CN 113716881 A CN113716881 A CN 113716881A
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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
- C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
- C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
- C03C21/002—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B11/00—Cleaning flexible or delicate articles by methods or apparatus specially adapted thereto
- B08B11/04—Cleaning flexible or delicate articles by methods or apparatus specially adapted thereto specially adapted for plate glass, e.g. prior to manufacture of windshields
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
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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
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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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
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/3411—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials
- C03C17/3417—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials all coatings being oxide coatings
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- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
The invention provides a production process of a toughened glass lens, and relates to the technical field of glass lens preparation. The production process comprises the following steps: sequentially carrying out CNC (computer numerical control) molding, polishing, ultrasonic cleaning, chemical toughening treatment, secondary cleaning and film coating on a glass substrate; after ultrasonic cleaning, the glass substrate is fixed by a clamping device, and then chemical toughening treatment and secondary cleaning are carried out. According to the invention, the glass substrate can be produced without a rotating frame by using the clamping device, so that the process flow is simplified, the processing efficiency is improved, the labor cost and the production cost are reduced, the probability of collision and shaking between the glass substrates can be reduced without the rotating frame, the generation of defective products is reduced, and the production yield of the toughened glass lenses is improved.
Description
Technical Field
The invention relates to the technical field of glass lens preparation, in particular to a production process of a toughened glass lens.
Background
The main raw material of the glass lens is optical glass which has excellent optical properties, is not easy to scratch and has high refractive index. The glass lens has good light transmittance and mechanical and chemical properties, constant refractive index and stable physical and chemical properties. The traditional toughened glass lens has the disadvantages of complex manufacturing process, long processing time and more defective products.
Disclosure of Invention
The invention aims to provide a production process of a toughened glass lens, which changes the traditional processing flow of the toughened glass lens and simplifies the traditional processing flow, and particularly, a clamping device is used to ensure that a glass substrate does not need to be rotated in the production process, so that the process flow is simplified, the processing efficiency is improved, the labor cost and the production cost are reduced, and meanwhile, the probability of collision and shaking between glass can be reduced without the need of a rotating frame, so that the generation of defective products is reduced, and the production yield of the toughened glass lens is improved.
The technical problem to be solved by the invention is realized by adopting the following technical scheme.
The invention provides a production process of a toughened glass lens, which comprises the following steps:
sequentially carrying out CNC (computer numerical control) molding, polishing, ultrasonic cleaning, chemical toughening treatment, secondary cleaning and film coating on a glass substrate; after ultrasonic cleaning, fixing the glass substrate by using a clamping device, then carrying out chemical toughening treatment and secondary cleaning, wherein coating is to soak a toughened glass lens for 5-10min by using a titanium dioxide solution, then taking out and drying the toughened glass lens, and then carrying out vacuum coating on the toughened glass lens by using a silicon dioxide solution and/or a dioxide pickaxe solution.
The production process of the toughened glass lens provided by the embodiment of the invention at least has the following beneficial effects: according to the invention, the glass substrate is subjected to CNC forming, so that the glass substrate meets the requirements of shape or size, and the determined proper shape and size are more convenient for subsequent processing operations of other aspects. Polishing the glass substrate after molding, mainly ensuring that the smoothness and the flatness of the surface of the toughened glass lens are better, and cleaning the toughened glass lens immediately after polishing, mainly preventing polishing powder from being solidified on the glass substrate and leaving traces on the glass substrate so as to influence the quality of the final toughened glass lens.
In the invention, the glass substrate is chemically toughened, wherein the chemical toughening is to enhance the surface stress of the glass mainly through ion exchange. The chemical tempering has the advantages of good thermal stability, low treatment temperature, difficult deformation of products, no limitation of thickness and geometric shape of the products, simple use equipment, easy realization of the products and the like. The chemical tempering can simplify the production process and facilitate the operation, so that the surface flatness, the bending strength and the optical performance of the obtained tempered glass lens are better. The secondary cleaning is mainly used for removing the adhesive or the strengthening liquid on the surface of the glass substrate, so that the surface of the lens is not smooth or has spots due to residues. Adopt titanium dioxide solution earlier during the coating film to soak the toughened glass lens, can let glass lens coating film more even like this, it is more convenient to let glass lens edge coating film, adopts silica solution to carry out the second coating film again, further strengthens the ability of resistance to wear of toughened glass lens, adopts the oxidation pick solution to carry out the third coating film at last, can further strengthen the degree of compactness of rete, and the ability of resistance to wear of messenger's toughened glass lens is better.
The processing flow of the traditional toughened glass lens is changed, the traditional processing flow is simplified, and particularly, a clamping device is used, so that a glass substrate does not need to be rotated in the production process, the process flow is simplified, the processing efficiency is improved, the labor cost and the production cost are reduced, meanwhile, the probability of collision and shaking between glass can be reduced without the need of the rotating frame, the generation of defective products is reduced, and the production yield of the toughened glass lens is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of a clamping device according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an upper frame according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a main body frame according to an embodiment of the present invention;
FIG. 4 is a schematic view of a bottom bracket structure according to an embodiment of the present invention;
FIG. 5 is a schematic view of a hard side clamp assembly (or hard carrier assembly) according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a soft side clamp assembly (or soft bracket assembly) according to an embodiment of the present invention.
Icon: 1-a frame body; 2-a hard side clamp assembly; 3-a soft side clamp assembly; 4-a hard carrier assembly; 5-a soft bracket assembly; 11-mounting a sleeve frame; 111-upper side plate; 112-an upper link; 113-upper ear plate; 114-upper chute; 12-a body frame; 121-main side plate; 122-a master link; 123-a first main runner; 124-main sliding plate; 125-a second main runner; 126-an adjustment slot; 13-a bottom bracket; 131-a bottom pallet; 132-a limiting plate; 133-bottom chute; 61-a slide shaft; 62-a lock nut; 63-hard holding strips; 64-Soft grip strips.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to specific examples.
A production process of a toughened glass lens comprises the following steps:
spraying ink on a glass substrate, carrying out CNC (computerized numerical control) molding on the glass substrate, and then carrying out grinding and cutting molding, wherein the concentration of a cutting fluid is 3-5% during grinding and cutting molding, and the grinding and cutting time is 30s-10 min; then polishing, and cleaning for 30-90min by adopting ultrasonic waves under the ultrasonic frequency of 35-45Hz after polishing; after ultrasonic cleaning, fixing a glass substrate by using a clamping device, preheating for 0.5-2h at 300 ℃ of 100-plus materials, then adopting a strengthening solution to strengthen for 2-10h at 450 ℃ of 300-plus materials, cooling to 50-80 ℃ after strengthening, then putting the glass substrate into water containing a cleaning agent to ultrasonically clean for 5-10min at 45-75 ℃, then putting the glass substrate into pure water to ultrasonically rinse for 10-30min, then drying, then adopting a secondary strengthening solution to strengthen for 6-8h at 410 ℃ of 350-plus materials, and finally coating the obtained finished product, wherein the coating is to firstly adopt a titanium dioxide solution to soak a toughened glass lens for 5-10min, then take out and dry the toughened glass lens, and then adopt a vacuum coating silicon dioxide solution and/or a dioxide pick solution.
In this embodiment, clamping device includes support body 1, is provided with on the support body 1 and controls the hard side clamp subassembly 2, soft side clamp subassembly 3, hard bracket subassembly 4 and the soft bracket subassembly 5 that slides. The hard side clamp assembly 2 and the soft side clamp assembly 3 are collectively referred to as side clamp assemblies, and the hard carrier assembly 4 and the soft carrier assembly 5 are collectively referred to as carrier assemblies. Hard bracket component 4 and soft bracket component 5 homoenergetic slide about support body 1 relatively to can adjust the position of side clamp subassembly and bracket component according to production process, realize hard centre gripping or soft centre gripping to glass. Hard side presss from both sides subassembly 2 and soft side and presss from both sides subassembly 3 and is controlling relative arrangement, and when using, the both sides that centre gripping glass can be established to relative side clamp subassembly card, avoids it to take place to overturn and emptys. Hard bracket component 4 and soft bracket component 5 are all upwards arranging for lift glass, realize the support and the stability to glass in the below. All be provided with support body locking mechanism on hard side clamp subassembly 2, soft side clamp subassembly 3, hard bracket subassembly 4 and the soft bracket subassembly 5. After the sliding position of each subassembly has been adjusted, then fix each subassembly on support body 1 through support body locking mechanism, when needing the adjustment, then loosen support body locking mechanism can.
The support body 1 includes jacket frame 11, main part frame 12 and bottom bracket 13, goes up jacket frame 11 and is connected with main part frame 12, and main part frame 12 is connected with bottom bracket 13, and hard side clamp assembly 2 sets up on last jacket frame 11, and soft side clamp assembly 3 and soft bracket assembly 5 all set up on main part frame 12, and hard bracket assembly 4 sets up on bottom bracket 13. The upper jacket frame 11 comprises upper side plates 111 which are arranged oppositely, an upper connecting rod 112 is connected between the upper side plates 111 which are arranged oppositely, an upper sliding groove 114 is formed in the upper side plate 111, and the hard side clamp assembly 2 is arranged in the upper sliding groove 114 in a sliding manner. The main body frame 12 comprises opposite main side plates 121, a main connecting rod 122 is connected between the opposite main side plates 121, a first main sliding groove 123 is formed in the upper portion of the main side plates 121, the soft side clamping assembly 3 is arranged in the first main sliding groove 123 in a sliding mode, a main sliding plate 124 is connected to the lower portion of the main side plates 121, a second main sliding groove 125 is formed in the main sliding plate 124, and the soft bracket assembly 5 is arranged in the second main sliding groove 125 in a sliding mode. The main side plate 121 is provided with an adjustment groove 126, and the main sliding plate 124 is slidably disposed in the adjustment groove 126. The bottom bracket 13 comprises a bottom bracket plate 131, a bottom sliding groove 133 is arranged on the bottom bracket plate 131, and the hard bracket component 4 is arranged in the bottom sliding groove 133 in a sliding manner.
At least one of the hard side clamp assembly 2 and the hard bracket assembly 4 comprises a sliding shaft 61, the sliding shaft 61 is arranged on the bracket body 1 in a sliding mode, and at least two layers of hard clamping strips 63 are arranged on the sliding shaft 61. At least one of the soft side clamping component 3 and the soft bracket component 5 comprises a sliding shaft 61, the sliding shaft 61 is arranged on the frame body 1 in a sliding way, and at least two layers of soft clamping strips 64 are arranged on the sliding shaft 61. The frame body locking mechanism is a threaded part at one end of the sliding shaft 61, a locking nut 62 is arranged on the part of the threaded part penetrating through the frame body 1, and the fixing or the adjustment of each component on the frame body 1 is realized by screwing or loosening the locking nut 62.
The traditional processing technology of the toughened glass lens comprises the following steps:
A. spraying (printing) full-page protection ink, B. large-piece cutting (inserting frame), C.CNC forming, D. polishing (fading protection ink), E. ultrasonic cleaning, F. rotating frame, G. tempering, H. rotating frame, I. ultrasonic cleaning, J. inspection, K. silk-screen printing/printing (cleaning inspection), and L. coating (inspecting finished product/packaging).
Clamping device has easy washing, high temperature resistance, harmless glass's characteristics, uses clamping device at toughened glass lens in-process, can need not the revolving rack in ultrasonic cleaning and tempering link, rejects current revolving rack technology with the technological process of traditional toughened glass lens processing, realizes the general clamping device of full-flow, therefore the new processing technology of toughened glass lens as follows:
A. spraying (printing) full-page protection ink, B. large-piece cutting (inserting frame), C.CNC forming, D. polishing (fading protection ink), E. ultrasonic cleaning, F. tempering, G. ultrasonic cleaning, H. inspection, I. silk-screen printing/printing (cleaning inspection), and J. coating (inspection finished product/package).
The novel processing technology of the toughened glass lens after the clamping device is used has the following advantages:
1. the traditional processing flow of the toughened glass lens can be updated, the traditional processing flow is simplified, and two processing technological flows are shortened;
2. the two conventional F, H processes which take longer time can be eliminated from the processing flow, so that the processing time of the whole toughened glass lens is shortened, and the overall processing efficiency is improved;
3. the clamping device can change the process, so that the conventional F, H two manual operation processes (processes requiring a large amount of workers to complete operation) are replaced, thereby saving a large amount of manpower and reducing the labor cost of enterprises;
4. the clamping device is used, the standard of ultrasonic cleaning and tempering process links on the clamping device is met, glass lenses do not need to be transferred like the traditional process, and the probability of collision and shaking between the glass lenses is reduced without transferring, so that the generation of defective products is reduced, and the production yield is improved;
5. the clamping device can meet all process flows of toughened glass lens processing, has strong circulation, can link up all the process flows, is not easy to overstock, can circulate quickly, saves space, and can reduce the management cost of materials.
In the embodiment, the ink is sprayed on the glass substrate firstly, so that the glass substrate is mainly prevented from being scratched, and subsequent processing or the quality of the final toughened glass lens is influenced. The ink is preferably UV ink, and the UV ink has the advantages of high curing speed, chemical etching resistance, environmental protection, safety, good scratch resistance, good adhesive force, good water resistance and the like. After UV printing ink is sprayed on the glass substrate, the glass substrate can be protected when being opened, inserted and polished, and the surface of the glass substrate is prevented from being scratched. The ink in the embodiment can also be glass ink UV resin which has the characteristics of high viscosity, high hardness and good heat resistance.
CNC molding, namely molding of a numerical control milling machine, is an operation of automatically processing a part to be processed mainly through a processing program which is programmed in advance. CNC shaping has the machining precision height, and processingquality is stable, and productivity ratio is high, advantages such as degree of automation height. The production of the toughened glass lens adopts CNC molding, so that the precision of the toughened glass lens can be improved, the quality of the toughened glass lens is better, the similarity of the obtained toughened glass lens is higher, and defective products are reduced; in addition, when parts are machined to be changed or parts with complex shapes are machined, only the numerical control program needs to be changed for machining, so that the production preparation time can be greatly saved, the machining process of the complex parts can be easier, the complex parts can be machined only by changing data, the error rate in the machining process can be reduced, and the product quality is further improved.
In the embodiment, the grinding and cutting forming is mainly realized by simply grinding the edge or the large concave-convex part of the surface of the glass substrate, so that the edge of the glass substrate formed by CNC is smooth, the edge or some fine parts of the surface of the glass substrate can be ground, and the smoothness of the surface or the edge of the glass lens is further improved. Cutting fluid is an industrial fluid used in metal cutting and grinding processes to cool or lubricate tools and workpieces. The cutting fluid is prepared by scientifically matching various super-strong functional additives, and has the characteristics of good cooling performance, lubricating performance, antirust performance, oil removal and cleaning functions, anticorrosion function, easiness in dilution and the like. The cutting fluid is added in the grinding process, so that lubricating films are formed between the grinding tool and the glass substrate and between the grinding tool and the abrasive dust, the friction force of the contact surfaces between the grinding tool and the glass substrate is reduced, the grinding tool is prevented from being abraded or adhered with the abrasive dust, the grinding force and the friction heat are reduced, the durability of the grinding tool is improved, and the smoothness/the flatness of the glass substrate are improved.
In the embodiment, the concentration of the cutting fluid is 3-5% during grinding and cutting molding, and the grinding and cutting time is 30s-10 min. By selecting the concentration, the phenomenon that the grinding tool is rusted or the abrasion degree is aggravated to influence the product quality when the concentration is too low, the cutting fluid is wasted when the concentration is too high and the like can be avoided. The grinding and cutting time is set, so that the condition that the grinding is not in place due to too long grinding time or too short grinding time can be avoided. The concentration of the cutting fluid is set, so that the tool can be prevented from rusting due to insufficient concentration of the cutting fluid, the smoothness of grinding operation is reduced, and pause possibly exists in the midway, so that the quality of a finished product is poor; and the concentration of the cutting fluid is too high, so that foam is generated during grinding to influence the lubricating effect, the papermaking cutting fluid is deteriorated, the cooling performance and the cleaning capacity of the cutting fluid are reduced, the content of impurities in the cutting fluid is increased, the problems of corrosion or spots of a glass substrate and the like are caused, and the quality of a finished product is reduced. The appropriate grinding time can improve the smoothness/flatness of the glass substrate and avoid damage to the glass substrate.
The polishing powder used in polishing may include one or more of iron oxide, cerium oxide, tin dioxide, barium carbonate, and diatomaceous earth. In this embodiment, cerium oxide and iron oxide are preferred, wherein the mass ratio of cerium oxide to iron oxide is 10: (0.75-1), the cerium oxide has the characteristics of high polishing speed, high smoothness and long service life. The Mohs hardness of the cerium oxide is 7, the chemical activity of the cerium oxide and silicate glass is high, the hardness is equivalent, and the cerium oxide is selected as the polishing powder of the glass substrate, so that the glass substrate can be ground more quickly and the grinding effect is better. The iron oxide is used as a polishing material and is matched with cerium oxide, so that the grinding efficiency can be further improved. The cerium oxide and the iron oxide are used in a matched mode according to a certain proportion, mutual promotion can be achieved, and the grinding speed can be further increased. However, the amount of iron oxide should not exceed the above ratio, the polishing rate of iron oxide itself is relatively slow, if too much iron oxide decreases the grinding rate of the tempered glass lens, and if too low iron oxide decreases the accelerating effect to decrease the grinding rate, so that the mass ratio of cerium oxide to iron oxide is preferably 10: (0.75-1). The other purpose of polishing is to remove ink, remove the ink sprayed on the glass substrate, avoid polluting the glass in the subsequent processing, or solidify the ink on the surface of the glass substrate during chemical tempering, so that the surface of the obtained glass substrate has spots.
In this embodiment, cleaning is performed immediately after polishing, otherwise the polishing powder is solidified on the glass, leaving traces on the glass. Preferably, ultrasonic cleaning is used after polishing. The ultrasonic cleaning is to utilize the cavitation, acceleration and direct current action of ultrasonic waves in liquid to directly and indirectly act on liquid and dirt, so that a dirt layer is dispersed, emulsified and stripped to achieve the purpose of cleaning. Because the surface of an object is cavitated or corroded by adopting long-time high-power-density cleaning, the cleaning is preferably carried out for 30-90min at 35-45Hz, so that the cleaning effect is good, the glass lens can be prevented from being damaged by ultrasonic waves, and the quality of the glass lens is further improved.
When the glass substrate is subjected to chemical toughening treatment, the glass substrate is preheated, so that the surface damage of the glass substrate can be avoided when the glass substrate suddenly rises to a high temperature. The glass substrate is preferably preheated at the temperature of 100-300 ℃ for 0.5-2h, so that the temperature of the glass substrate can be slowly increased, the conditions of deformation, surface damage and the like in the glass substrate caused by rapid temperature increase are avoided, and the smooth proceeding of the chemical toughening process is further ensured. The glass substrate is strengthened for 2-10h at the temperature of 300-450 ℃, namely the glass substrate is soaked in the strengthening solution, ions in the strengthening solution are exchanged with ions in the surface layer of the glass substrate, the stress of the surface layer of the glass substrate is strengthened, and the ions exchanged by the glass substrate are extruded, so that the hardness of the glass substrate is improved, and the hardness of the glass substrate can be strengthened to the greatest extent under the condition, so that the hardness strengthening effect of the glass substrate is better.
In the embodiment, the strengthening liquid is potassium nitrate and potassium carbonate, wherein the mass ratio of potassium nitrate to potassium carbonate is 7-10: 1. in the present embodiment, the main strengthening liquid is potassium nitrate in a molten state, and mainly ions in the potassium nitrate exchange with ions in the surface layer of the glass substrate, and due to the volume change after the exchange, compressive stress is formed on both surfaces of the glass substrate, and tensile stress is formed inside the glass substrate, thereby achieving the effect of improving the glass strength. And proper potassium carbonate is added, so that the ion exchange between the ions in the molten salt and the surface layer of the glass substrate can be accelerated, the tempering time is saved, and the production efficiency is improved. Too much or too little potassium carbonate makes it difficult to accelerate the ion exchange rate and even lowers the ion exchange rate, so that the mass ratio of potassium nitrate to potassium carbonate in this embodiment is preferably 9.
The method further comprises the step of performing secondary strengthening on the glass substrate, wherein the secondary strengthening is performed for 6-8 hours at the temperature of 350-410 ℃ by adopting a secondary strengthening solution, the secondary strengthening solution comprises a potassium nitrate solution, a potassium carbonate solution and a potassium phosphate solution, and the mass ratio of the potassium nitrate solution to the potassium carbonate solution to the potassium phosphate solution is 10: 1: 0.8. the secondary strengthening is mainly to further increase the ion exchange between the secondary strengthening liquid and the glass, realize the ion exchange again when the ion exchange is not completely realized in the chemical toughening process, further realize the ion exchange of the ions in the surface layer of the glass, strengthen the stress of the glass, further improve the strength of the glass and ensure that the hardness of the prepared glass is better. Potassium nitrate, potassium carbonate and potassium phosphate are selected as the secondary strengthening liquid, the potassium carbonate and the potassium phosphate mainly play a role of an auxiliary agent, so that the ion exchange speed of ions in the potassium nitrate and the ion exchange speed of the glass surface layer are accelerated, and the non-exchanged ions on the glass surface layer can be further exchanged, so that the glass strength is enhanced; the mass ratio of the strengthening liquid is set, so that the influence of excessive/insufficient potassium carbonate and potassium phosphate on the ion exchange speed is avoided. The secondary strengthening does not need preheating, and because the glass substrate subjected to chemical toughening treatment is low in temperature influence, the glass substrate cannot be damaged when the temperature is suddenly increased to a high temperature.
In detail, the method also comprises the following steps during secondary strengthening: in the process of soaking with the secondary strengthening solution, the oscillation is started every 20-30min, the oscillation frequency is 50-80Hz, and the oscillation time is 10-20 min. Therefore, the balance state of the ion exchange between the secondary strengthening liquid and the glass substrate can be broken at regular time, and the secondary strengthening liquid and the glass substrate can further carry out the ion exchange under the external acting force, so that the stress on the surface or the inside of the glass substrate is further enhanced, and the hardness of the toughened glass lens is enhanced. A large amount of experimental data show that the secondary strengthening liquid oscillates once every 20-30min in the strengthening time period by using the secondary strengthening liquid, and the ion exchange process of the secondary strengthening liquid and the glass substrate is carried out in a superimposed manner through multiple oscillations, so that the hardness of the toughened glass lens can be further enhanced. The oscillation frequency is set to be 50-80Hz, so that the damage caused by the over-high stress of the glass substrate due to the over-high oscillation speed is avoided, and the problem that the balance state of the ion exchange between the secondary strengthening liquid and the glass substrate is difficult to break due to the over-low oscillation speed, so that the ion exchange cannot be further carried out can also be avoided. The oscillation time is 10-20min, and the ion exchange degree between the secondary strengthening liquid and the glass substrate can be ensured to be better in the oscillation time.
In this embodiment, secondary cleaning is performed after chemical toughening treatment, and the secondary cleaning includes the following processing steps: cooling the toughened glass substrate to 50-80 ℃, then putting the toughened glass substrate into water containing a cleaning agent for ultrasonic cleaning at 45-75 ℃ for 5-10min, then putting the toughened glass substrate into pure water for ultrasonic rinsing for 10-30min, and then drying. The secondary cleaning is mainly used for cleaning the strengthening liquid on the glass substrate in the toughening treatment step, so that the bad glass condition caused by the fact that the strengthening liquid is remained on the surface of the glass substrate is avoided. The glass substrate is cooled firstly, the glass substrate is prevented from being damaged by sudden cooling at high temperature, the glass substrate is placed in water with a cleaning agent for ultrasonic cleaning, the cleaning agent can better clean the strengthening liquid, specifically, the cleaning agent reacts with the strengthening liquid, the strengthening liquid is dissolved in the water, and the surface cleanliness of the glass substrate is further ensured. And ultrasonically rinsing in pure water for 10-30min to further improve the cleanliness of the glass substrate and avoid stains on the surface of the glass substrate.
In the embodiment, the method further comprises the steps of inspection and silk-screen printing before film coating, wherein the inspection is mainly to detect the hardness, the surface flatness and the like of the glass substrate, and when the hardness or the surface flatness of the glass substrate does not meet the requirements, the glass substrate can be further processed, so that the obtained product is ensured to have better quality. The silk screen printing is mainly used for obtaining the glass lens with better aesthetic property, patterns can be printed on the glass lens according to different requirements, and the aesthetic property of the glass lens is improved.
During film coating, the thickness of a titanium dioxide film layer is 30.1nm, the thickness of a silicon dioxide film layer is 44.2nm, and the thickness of a pickaxe dioxide is 50.3 nm. Set up suitable thickness, can let the rete stability of coating film better, can be high temperature resistant and difficult emergence is chapped etc.. The coating film is soaked by the titanium dioxide solution firstly, so that the film layers are more uniform, then the vacuum coating is adopted, the film layers can be further more uniform, the compactness among the film layers can be enhanced, and the wear resistance of the toughened glass lens is better.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
A production process of a toughened glass lens comprises the following steps:
the method comprises the following steps of carrying out CNC forming on a glass substrate, polishing, carrying out ultrasonic cleaning after polishing, carrying out cleaning for 30min at the ultrasonic frequency of 35Hz, carrying out ultrasonic cleaning, fixing the glass substrate by using a clamping device, carrying out chemical toughening treatment, specifically, preheating the glass substrate for 0.5h at 100 ℃, then strengthening for 2h at 300 ℃ by using a strengthening solution, cooling to 50 ℃, putting into water containing a cleaning agent, carrying out ultrasonic cleaning for 5min at 45 ℃, putting into pure water, carrying out ultrasonic rinsing for 18min, drying, carrying out film coating on the obtained finished product after drying, wherein the film coating is to firstly soak a toughened glass lens for 5min by using a titanium dioxide solution, then taking out and airing the toughened glass lens, then carrying out film coating by using a vacuum film coating silicon dioxide solution, and carrying out silk-printing and inspection on the obtained toughened glass lens.
In this embodiment, the polishing powder employs cerium oxide and iron oxide, and the mass ratio of cerium oxide to iron oxide is 10: 1, the mass ratio of the strengthening liquid potassium nitrate to the potassium carbonate is 7: 1.
example 2
A production process of a toughened glass lens comprises the following steps:
the method comprises the following steps of carrying out CNC forming on a glass substrate, polishing, carrying out ultrasonic cleaning after polishing, carrying out cleaning for 90min at the ultrasonic frequency of 45Hz, carrying out ultrasonic cleaning, fixing the glass substrate by using a clamping device, carrying out chemical toughening treatment, specifically, preheating the glass substrate for 2h at 300 ℃, then carrying out strengthening for 10h at 450 ℃ by using a strengthening solution, cooling to 80 ℃, putting into water containing a cleaning agent, carrying out ultrasonic cleaning for 10min at 75 ℃, putting into pure water, carrying out ultrasonic rinsing for 25min, drying, carrying out film coating on the obtained finished product after drying, wherein the film coating is to soak a toughened glass lens for 10min by using a titanium dioxide solution, taking out and airing the toughened glass lens, and then carrying out vacuum film coating on a titanium dioxide solution.
In this embodiment, the polishing powder employs cerium oxide and iron oxide, and the mass ratio of cerium oxide to iron oxide is 10: 1, the mass ratio of the strengthening liquid potassium nitrate to the potassium carbonate is 8: 1.
example 3
A production process of a toughened glass lens comprises the following steps:
the method comprises the following steps of carrying out CNC forming on a glass substrate, polishing, carrying out ultrasonic cleaning after polishing, cleaning for 50min at the ultrasonic frequency of 40Hz, carrying out ultrasonic cleaning, fixing the glass substrate by using a clamping device, carrying out chemical toughening treatment, specifically, preheating the glass substrate for 1.5h at 180 ℃, then strengthening for 8h at 320 ℃ by using strengthening liquid, cooling to 60 ℃, placing the glass substrate into water containing a cleaning agent for ultrasonic cleaning for 6min at 55 ℃, placing the glass substrate into pure water for ultrasonic rinsing for 15min, drying, carrying out film coating on the obtained finished product after drying, wherein the film coating is to soak a toughened glass lens for 7min by using a titanium dioxide solution, taking out the toughened glass lens, airing the toughened glass lens, and then adopting a vacuum film coating silicon dioxide solution and a dioxide pickaxe solution.
In this embodiment, the polishing powder employs cerium oxide and iron oxide, and the mass ratio of cerium oxide to iron oxide is 10: 1, the mass ratio of the strengthening liquid potassium nitrate to the potassium carbonate is 9: 1.
example 4
The production process of the toughened glass lens is different from the embodiment 3 in that the production process comprises the following additional operation steps:
spraying ink on a glass substrate, carrying out CNC (computer numerical control) molding on the glass substrate, polishing, carrying out ultrasonic cleaning after polishing, cleaning for 60min at the ultrasonic frequency of 38Hz, fixing the glass substrate by using a clamping device after ultrasonic cleaning, carrying out chemical toughening treatment, specifically, preheating the glass substrate for 1.2h at 120 ℃, then strengthening for 7.5h at 390 ℃ by using strengthening liquid, cooling to 70 ℃, putting the glass substrate into water containing a cleaning agent, carrying out ultrasonic cleaning for 8min at 65 ℃, then putting the glass substrate into pure water, carrying out ultrasonic rinsing for 30min, drying, and then coating the obtained finished product, wherein the coating is to soak a toughened glass lens for 6min by using a titanium dioxide solution, then taking out and airing the toughened glass lens, and then using a vacuum coating silicon dioxide solution and a dioxide pickaxe solution.
The ink used in this example was UV ink, and the remaining steps in this example were the same as in example 3.
Example 5
The production process of the toughened glass lens is different from the embodiment 3 in that the operation steps are added, and specifically comprises the following steps:
CNC molding is carried out on a glass substrate, grinding and cutting molding is carried out after molding, the concentration of cutting fluid is 3% during grinding and cutting molding, the grinding and cutting time is 30s, then polishing is carried out, ultrasonic cleaning is adopted after polishing, cleaning at ultrasonic frequency of 43Hz for 55min, fixing the glass substrate with a clamping device after ultrasonic cleaning, then carrying out chemical toughening treatment, specifically preheating the glass substrate at 250 ℃ for 1.8h, then adopting strengthening liquid to strengthen for 8.5h at 401 ℃, then cooling to 75 ℃, putting into water containing cleaning agent to carry out ultrasonic cleaning for 5.5min at 68 ℃, then putting into pure water to carry out ultrasonic rinsing for 10min, then drying, coating the obtained finished product by soaking the toughened glass lens in a titanium dioxide solution for 6.5min, then taking out and airing the mixture, and then adopting a vacuum coating silicon dioxide solution and a dioxide pickaxe solution.
Example 6
The production process of the toughened glass lens is different from the embodiment 5 in that part of the operation conditions are changed, and specifically comprises the following steps:
spraying ink on a glass substrate, carrying out CNC (computerized numerical control) molding on the glass substrate, carrying out grinding and cutting molding after molding, wherein the concentration of a cutting fluid is 5% during the grinding and cutting molding, the grinding and cutting time is 10min, then polishing, cleaning by ultrasonic after polishing, cleaning at ultrasonic frequency of 43Hz for 55min, fixing the glass substrate with a clamping device after ultrasonic cleaning, then carrying out chemical toughening treatment, specifically preheating the glass substrate at 250 ℃ for 1.8h, then adopting strengthening liquid to strengthen for 8.5h at 401 ℃, then cooling to 75 ℃, putting into water containing cleaning agent to carry out ultrasonic cleaning for 5.5min at 68 ℃, then putting into pure water to carry out ultrasonic rinsing for 10min, then drying, coating the obtained finished product by soaking the toughened glass lens in a titanium dioxide solution for 6.5min, then taking out and airing the mixture, and then adopting a vacuum coating silicon dioxide solution and a dioxide pickaxe solution.
Example 7
The production process of the toughened glass lens is different from the embodiment 3 in that the operation steps are added, and specifically comprises the following steps:
carrying out CNC forming on a glass substrate, polishing, cleaning by using ultrasonic waves after polishing for 50min at the ultrasonic frequency of 40Hz, fixing the glass substrate by using a clamping device after ultrasonic cleaning, carrying out chemical toughening treatment, specifically, preheating the glass substrate for 1.5h at 280 ℃, then strengthening by using strengthening liquid for 8h at 430 ℃, cooling to 58 ℃, placing the glass substrate into water containing a cleaning agent for ultrasonic cleaning for 7.8min at 52 ℃, then placing the glass substrate into pure water for ultrasonic rinsing for 20min, then drying, drying the glass substrate, strengthening the glass substrate by using secondary strengthening liquid for 6h at 350 ℃, and starting oscillation at intervals of 25min in the process of soaking by using the secondary strengthening liquid, wherein the oscillation frequency is 60Hz, and the oscillation time is 15 min; and finally, coating the obtained finished product, namely soaking the toughened glass lens for 6.9min by adopting a titanium dioxide solution, taking out and airing the toughened glass lens, and then coating a film by adopting a silicon dioxide solution and a oxidation pickaxe solution in vacuum.
Example 8
The production process of the toughened glass lens is different from the production process of the embodiment 7 in that the operation conditions are changed, and specifically comprises the following steps:
carrying out CNC forming on a glass substrate, polishing, cleaning by using ultrasonic waves after polishing for 50min at the ultrasonic frequency of 40Hz, fixing the glass substrate by using a clamping device after ultrasonic cleaning, carrying out chemical toughening treatment, specifically, preheating the glass substrate for 1.5h at 280 ℃, then strengthening the glass substrate for 8h at 430 ℃ by using strengthening liquid, cooling to 58 ℃, putting the glass substrate into water containing a cleaning agent for ultrasonic cleaning for 7.8min at 52 ℃, then putting the glass substrate into pure water for ultrasonic rinsing for 20min, drying the glass substrate, strengthening the glass substrate for 6h at 350 ℃ by using secondary strengthening liquid, and starting oscillation at intervals of 20min in the process of soaking by using the secondary strengthening liquid, wherein the oscillation frequency is 50Hz, and the oscillation time is 10 min; and finally, coating the obtained finished product, namely soaking the toughened glass lens for 6.9min by adopting a titanium dioxide solution, taking out and airing the toughened glass lens, and then coating a film by adopting a silicon dioxide solution and a oxidation pickaxe solution in vacuum.
Example 9
The production process of the toughened glass lens is different from the production process of the embodiment 7 in that the operation conditions are changed, and specifically comprises the following steps:
carrying out CNC forming on a glass substrate, polishing, cleaning by using ultrasonic waves after polishing for 50min at the ultrasonic frequency of 40Hz, fixing the glass substrate by using a clamping device after ultrasonic cleaning, carrying out chemical toughening treatment, specifically, preheating the glass substrate for 1.5h at 280 ℃, then strengthening by using strengthening liquid for 8h at 430 ℃, cooling to 58 ℃, placing the glass substrate into water containing a cleaning agent for ultrasonic cleaning for 7.8min at 52 ℃, then placing the glass substrate into pure water for ultrasonic rinsing for 20min, drying the glass substrate, strengthening the glass substrate by using secondary strengthening liquid for 6h at 350 ℃, and starting oscillation at intervals of 30min in the process of soaking by using the secondary strengthening liquid, wherein the oscillation frequency is 80Hz and the oscillation time is 20 min; and finally, coating the obtained finished product, namely soaking the toughened glass lens for 6.9min by adopting a titanium dioxide solution, taking out and airing the toughened glass lens, and then coating a film by adopting a silicon dioxide solution and a oxidation pickaxe solution in vacuum.
Test results
The toughened glass lenses of the embodiments 1 to 9 are taken as 1 to 9 in sequence, then the common lenses are taken as a control group, the thicknesses of the toughened glass lenses and the common lenses are the same, and the impact strength and the bending strength of the toughened glass lenses and the common lenses are respectively detected, wherein the impact strength and the bending strength are 1 to 20, the higher the numerical value is, the better the strength is, and the specific data are as follows:
table 1 data test results
As can be seen from Table 1, when compared with the control group, the impact strength and the bending strength of the toughened glass lens prepared by the invention are higher than those of the common lens in 1-9; 1-6 compared with 7-9, the toughened glass lens after secondary strengthening has better shock resistance and better bending resistance. In addition, the impact strength and the bending strength can reflect the hardness of the toughened glass lens, and the better the impact strength and the bending strength are, the better the hardness is. Therefore, the toughened glass lens prepared by the invention has better hardness.
And then detecting the wear resistance of the 1-9 groups and the comparison group, specifically, taking the 1-9 groups of toughened glass lenses and the common glass lenses of the comparison group, and detecting the wear amount of the surfaces of the lenses at the same load grinding speed, wherein the initial wear amount is 0, the higher the wear amount is, the lower the wear resistance is, and the specific data are as follows:
TABLE 2 antiwear TEST METER
As can be seen from Table 2, the wear amounts of the groups 1 to 9 were smaller than those of the control group; the toughened glass lenses produced under the conditions of group 7 had better abrasion resistance than the other groups. Therefore, the toughened glass lens prepared by the invention has better abrasion resistance.
In summary, the production process of the tempered glass lens of the embodiment of the invention comprises the following steps: the processing flow of the traditional toughened glass lens is changed, the traditional processing flow is simplified, and particularly, a clamping device is used, so that a glass substrate does not need to be rotated in the production process, the process flow is simplified, the processing efficiency is improved, the labor cost and the production cost are reduced, meanwhile, the probability of collision and shaking between glass can be reduced without the need of the rotating frame, the generation of defective products is reduced, and the production yield of the toughened glass lens is improved.
The embodiments described above are some, but not all embodiments of the invention. The detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (10)
1. The production process of the toughened glass lens is characterized by comprising the following steps of:
sequentially carrying out CNC (computer numerical control) molding, polishing, ultrasonic cleaning, chemical toughening treatment, secondary cleaning and film coating on a glass substrate; after the ultrasonic cleaning, the glass substrate is fixed by a clamping device, then the chemical toughening treatment and the secondary cleaning are carried out, and the coating is carried out by firstly soaking a toughened glass lens in a titanium dioxide solution for 5-10min, then taking out and drying the toughened glass lens, and then carrying out vacuum coating on a silicon dioxide solution and/or a dioxide pickaxe solution.
2. The process for producing a tempered glass lens as claimed in claim 1, wherein before the CNC forming of the glass substrate, the process further comprises spraying an ink on the glass substrate, wherein the ink is a UV ink.
3. The process for producing a tempered glass lens according to claim 1, wherein after the CNC forming and before the polishing, the process further comprises the step of subjecting the glass substrate to grinding and cutting forming, wherein the concentration of the cutting fluid during the grinding and cutting forming is 3-5%, and the grinding and cutting time is 30s-10 min.
4. The process for producing a tempered glass lens as claimed in claim 1, wherein the polishing powder used for polishing comprises one or more of iron oxide, cerium oxide, tin dioxide, barium carbonate and diatomaceous earth.
5. The process for the production of tempered glass lenses according to claim 1, wherein the chemical tempering treatment comprises the following steps: the cleaned glass substrate is preheated for 0.5-2h at the temperature of 100-300 ℃, and then the preheated glass substrate is strengthened for 2-10h at the temperature of 300-450 ℃ by adopting strengthening liquid.
6. The production process of the tempered glass lens according to claim 5, wherein the strengthening solution is a potassium nitrate solution and a potassium carbonate solution, and the mass ratio of the potassium nitrate solution to the potassium carbonate solution is 7-10: 1.
7. the process for the production of a tempered glass lens as claimed in claim 1, wherein the secondary cleaning comprises the following steps: and cooling the tempered glass substrate to 50-80 ℃, then putting the tempered glass substrate into water containing a cleaning agent for ultrasonic cleaning at 45-75 ℃ for 5-10min, then putting the glass substrate into pure water for ultrasonic rinsing for 10-30min, and then drying.
8. The process for producing a tempered glass lens as claimed in claim 1, wherein after the secondary cleaning, before the coating, the process further comprises a step of performing secondary strengthening on the glass substrate, wherein the secondary strengthening is performed by using a secondary strengthening solution at 410 ℃ of 350 ℃ for 6-8h, the secondary strengthening solution comprises a potassium carbonate solution, a potassium nitrate solution and a potassium phosphate solution, and the mass ratio of the potassium nitrate solution to the potassium carbonate solution to the potassium phosphate solution is 10: 1: 0.8.
9. the process for producing a tempered glass lens as claimed in claim 9, further comprising, at the time of secondary strengthening: in the process of soaking with the secondary strengthening solution, the oscillation is started every 20-30min, the oscillation frequency is 50-80Hz, and the oscillation time is 10-20 min.
10. The process for producing a tempered glass lens as claimed in claim 1, wherein the thickness of the titanium dioxide film is 30.1nm, the thickness of the silicon dioxide film is 44.2nm, and the thickness of the titanium dioxide film is 50.3 nm.
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