CN109264971B - A thermal cycle environmental protection glass processing technology - Google Patents
A thermal cycle environmental protection glass processing technology Download PDFInfo
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- CN109264971B CN109264971B CN201810951227.2A CN201810951227A CN109264971B CN 109264971 B CN109264971 B CN 109264971B CN 201810951227 A CN201810951227 A CN 201810951227A CN 109264971 B CN109264971 B CN 109264971B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/20—Composition of the atmosphere above the float bath; Treating or purifying the atmosphere above the float bath
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
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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
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching 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
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/006—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
- C03C17/008—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character comprising a mixture of materials covered by two or more of the groups C03C17/02, C03C17/06, C03C17/22 and C03C17/28
- C03C17/009—Mixtures of organic and inorganic materials, e.g. ormosils and ormocers
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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
- C03C2218/00—Methods for coating glass
- C03C2218/10—Deposition methods
- C03C2218/11—Deposition methods from solutions or suspensions
- C03C2218/112—Deposition methods from solutions or suspensions by spraying
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Abstract
本发明提出一种热循环环保玻璃加工工艺，突破传统玻璃生产工艺形式，经过两次阶段性挤压、冷热交替浸泡以及漂浮扩展后可得到所需厚度的较薄光伏玻璃，而且阶段性逐级挤压和冷热交替浸泡可对漂浮玻璃带产生柔性作用，更不易使漂浮玻璃带断裂，连续性更强。然后对初始玻璃板进行退火形成成品玻璃板。然后对成品玻璃板进行抛光和去离子。然后进行镀膜制成光伏玻璃。与现有技术相比，本发明的热循环环保玻璃加工工艺，其可高效生产高质量光伏玻璃，尤其不会受到锡蒸汽损害，节能环保且成本低。
The invention proposes a thermal cycle environment-friendly glass processing technology, which breaks through the traditional glass production process. After two stage extrusion, alternating cold and heat soaking and floating expansion, a thinner photovoltaic glass with the required thickness can be obtained. Stage extrusion and alternating hot and cold immersion can have a flexible effect on the floating glass ribbon, and it is more difficult to break the floating glass ribbon, and the continuity is stronger. The initial glass sheet is then annealed to form the finished glass sheet. The finished glass sheet is then polished and deionized. Then it is coated to make photovoltaic glass. Compared with the prior art, the thermal cycle environment-friendly glass processing technology of the present invention can efficiently produce high-quality photovoltaic glass, is especially not damaged by tin vapor, is energy-saving, environment-friendly, and has low cost.
Description
Technical Field
The invention relates to the field of glass processing technology, in particular to a thermal cycle environment-friendly glass processing technology.
Background
The float glass production is formed by introducing protective gas (N)2And H2) Is finished in the tin bath. The molten glass continuously flows into the tank furnace and floats on the surface of molten tin with high relative density, and under the action of gravity and surface tension, the molten glass is spread and flattened on the surface of the molten tin to form a transition roller table with flat upper and lower surfaces, and after the molten glass is hardened and cooled, the molten glass is guided to the transition roller table. The rollers of the roller table rotate to pull the glass strip out of the tin bath and enter an annealing kiln, and the float glass product is obtained after annealing and cutting. Compared with other forming methods, the float method has the advantages that: the method is suitable for efficiently manufacturing high-quality plate glass, such as no ribs, uniform thickness, flat upper and lower surfaces and parallel to each other; the scale of the production line is not limited by a forming method, and the energy consumption of unit products is low; the utilization rate of the finished product is high; scientific management is easy, full-line mechanization and automation are realized, and the labor productivity is high; the continuous operation period can be as long as several years, which is beneficial to stable production; can provide suitable conditions for producing some new varieties on line, such as electro-float reflecting glass, film-coated glass during annealing, cold end surface treatment and the like. Therefore, float glass is also increasingly used for photovoltaic glass. But instead of the other end of the tubePhotovoltaic glass has higher requirements on the surface quality of glass, molten tin liquid is required to be used for producing glass by float glass, in order to improve the fluidity of glass fluid, the flattening of the glass fluid is facilitated and the efficiency is improved, the higher the temperature of the molten tin liquid is required to be within a certain range, the better the temperature is, a contradiction is generated, the higher the temperature of the molten tin liquid is, the more tin steam is generated, the tin steam reaches a certain concentration, converges and integrates the molten tin liquid to drip on a glass belt, and is attached in a form of tin oxide, so that the glass is damaged, and the glass quality is seriously influenced.
Accordingly, the present inventors have made extensive studies to solve the above problems and have made the present invention.
Disclosure of Invention
The invention aims to provide a thermal cycle environment-friendly glass processing technology which can efficiently produce high-quality photovoltaic glass, particularly cannot be damaged by tin vapor, is energy-saving and environment-friendly and has low cost.
In order to achieve the purpose, the invention adopts the following technical scheme:
a thermal cycle environment-friendly glass processing technology comprises the following steps:
(1) smelting the glass raw materials by using a smelting furnace; putting the glass raw material into a smelting furnace and heating to form glass fluid;
(2) carrying out float forming on the glass fluid through a metal bath to form an initial glass plate; the finished glass sheet is formed according to the following steps,
the metal bath room comprises a bath groove positioned below and used for containing molten tin, a top cover covered above the bath groove, a gas supply device used for supplying protective gas, a gas extraction device used for extracting protective gas, a first supply tin groove and a second supply tin groove used for supplying molten tin to the bath groove, and a first collection tin groove and a second collection tin groove used for containing molten tin flowing out of the bath groove; the liquid level of the molten tin in the first supply tin tank and the second supply tin tank is higher than that of the molten tin in the bath tank;
the side wall of the bath is provided with an air inlet communicated with the air supply device and an air outlet communicated with the air extraction device; the air inlet and the air outlet are both higher than the liquid level of molten tin; the gas supply device comprises a supply power mechanism and a gas inlet pipeline connected between the supply power mechanism and the gas inlet; the supply power mechanism comprises a gas heating mechanism for heating protective gas;
the gas extraction device comprises a gas extraction power mechanism, a tin collection mechanism for cooling and collecting tin steam, a first gas extraction pipeline connected between the gas outlet and the tin collection mechanism, a second gas extraction pipeline connected between the tin collection mechanism and the gas extraction power mechanism, and a circulating pipeline connected between the gas extraction power mechanism and the supply power mechanism; the tin collecting mechanism comprises a collecting box, a first inclined pipeline, a second inclined pipeline and a cooling box body, wherein the collecting box is positioned below the first air exhaust pipeline and the second air exhaust pipeline;
the discharge hole of the smelting furnace is communicated with the bath; the discharge port is provided with a flow passage control flashboard; an inclined guide plate which gradually becomes lower from upstream to downstream is arranged between the discharge port and the bath, an initial leveling roller in a horizontal plane and an initial support roller which is parallel to and under the initial leveling roller are arranged at the lower end of the inclined guide plate, the initial leveling roller is vertical to the flow direction of glass fluid, initial lifting bearing rods which are vertically arranged are arranged at two ends of the initial leveling roller, the initial lifting bearing rods penetrate through the top cover, the lower ends of the initial lifting bearing rods are connected with the initial leveling roller through bearings, and an initial lifting driving device is arranged at the upper end of the initial lifting bearing rods; the initial support roller is positioned below the liquid level of molten tin, and the initial support roller is connected with the side wall of the bath through a bearing;
a flattening roller set is arranged in the metal bathroom; the flattening roller group comprises an upstream base roller and a downstream base roller which are parallel to the initial flattening roller, a first guide roller which is parallel to the initial flattening roller and is positioned at the upstream of the upstream base roller, a second guide roller which is parallel to the initial flattening roller and is positioned at the downstream of the downstream base roller, a squeezing lifting roller which is positioned between the upstream base roller and the downstream base roller, an upstream sealing support roller which is supported in parallel under the upstream base roller, and a downstream sealing support roller which is supported in parallel under the downstream base roller; the upstream base roller, the downstream base roller, the first guide roller, the second guide roller, the upstream sealing support roller and the downstream sealing support roller are all located below the liquid level of molten tin, the highest point of the extrusion lifting roller is higher than the liquid level of the molten tin, the highest points of the upstream base roller and the downstream base roller are lower than the highest points of the first guide roller and the second guide roller, the extrusion lifting roller is located above the upstream base roller and the downstream base roller, the diameter of the extrusion lifting roller is larger than the distance between the upstream base roller and the downstream base roller, the diameters of the upstream base roller and the downstream base roller are equal, the axes of the upstream base roller and the downstream base roller are located in the same horizontal plane, and the distance between the extrusion lifting roller and the downstream base roller is smaller than the distance between the extrusion lifting roller and the upstream base roller; the two ends of the extrusion lifting roller are provided with vertically arranged extrusion lifting bearing rods in a matching way, the extrusion lifting bearing rods penetrate through the top cover, the lower ends of the extrusion lifting bearing rods are connected with the extrusion lifting roller through bearings, and the upper ends of the extrusion lifting bearing rods are provided with extrusion lifting driving devices in a matching way; a first gap for glass fluid to pass through is formed between the upper end of the upstream base roller and the lower end of the extrusion lifting roller, and a second gap for glass fluid to pass through is formed between the upper end of the downstream base roller and the lower end of the extrusion lifting roller; the lower end of the upstream base roller is in contact with the upper end of the upstream sealing support roller, and the lower end of the upstream sealing support roller is in contact with the bottom of the bath; the lower end of the downstream base roller is in contact with the upper end of the downstream sealing support roller, and the lower end of the downstream sealing support roller is in contact with the bottom of the bath; the upstream base roller, the downstream base roller, the first guide roller, the second guide roller, the upstream sealing support roller and the downstream sealing support roller are connected with the side wall of the bath through bearings; the bath is divided into an upstream half area positioned at the upstream of the first guide rod, the upstream base roller and the upstream seal support roller, a downstream half area positioned at the downstream of the second guide rod, the downstream base roller and the downstream seal support roller and a middle half area positioned below the extrusion lifting roller by the extrusion lifting roller, the upstream base roller, the downstream base roller, the first guide roller, the second guide roller, the upstream seal support roller and the downstream seal support roller; a first tin inlet communicated with the first tin supply groove, a first tin outlet communicated with the first tin collection groove, a second tin inlet communicated with the second tin supply groove and a second tin outlet communicated with the second tin collection groove are formed in the side wall of the bath groove; the first tin inlet is provided with a first valve, the first tin outlet is provided with a second valve, the second tin inlet is provided with a third valve, and the second tin outlet is provided with a fourth valve; the first tin inlet and the first tin outlet are both positioned in the upstream half zone, and the first tin inlet and the first tin outlet are both positioned below the liquid level of molten tin; the second tin inlet and the second tin outlet are both positioned in the downstream half zone and are both positioned below the liquid level of molten tin; a heating device is arranged in the middle half area; the temperature of the molten tin in the upstream half-zone is lower than the temperature of the molten tin in the downstream half-zone, the temperature of the molten tin in the downstream half-zone is lower than the temperature of the molten tin in the intermediate half-zone; the temperature of the molten tin in the first supply tin bath is lower than the temperature of the molten tin in the upstream half-zone, and the temperature of the molten tin in the second supply tin bath is lower than the temperature of the molten tin in the downstream half-zone; the level of molten tin in the upstream half-zone is level with the level of molten tin in the downstream and intermediate half-zones;
in the process of forming an initial glass plate by a float method, firstly, protective gas is introduced into a metal bath chamber by a gas supply device, then a flow channel of a smelting furnace is controlled by a controller to control a flashboard to open, glass fluid flows out of a discharge port and flows downwards along an inclined flow deflector, when the glass fluid flows onto molten tin in an upstream half area, an initial lifting driving device drives an initial lifting bearing rod to drive an initial leveling roller to descend, the glass fluid is clamped and pressed under the supporting action of an initial supporting roller, the glass fluid is rolled and spread out, a floating glass ribbon is formed on the liquid level of the molten tin in the upstream half area, and the floating glass ribbon continuously moves downstream along the molten tin, floats over a first guide roller and a second guide roller and floats over the downstream half area until entering an annealing chamber along with the continuous supply of the smelting furnace;
then the controller controls the extrusion lifting driving device to drive the extrusion lifting bearing rod to drive the extrusion lifting roller to descend, the floating glass belt between the first guide roller and the second guide roller is pressed and immersed into molten tin and is contacted with the upstream base roller and the downstream base roller, the floating glass belt is enabled to form a V shape under the support of the first guide roller and the second guide roller, the controller controls the size of a first gap between the extrusion lifting roller and the upstream base roller and the size of a second gap between the extrusion lifting roller and the downstream base roller, the size of the second gap is smaller than the size of the first gap, the controller controls the extrusion lifting roller and the upstream base roller to firstly extrude and flatten the floating glass belt, and the extrusion lifting roller and the downstream base roller to extrude and flatten the floating glass belt again;
then, the controller is used for controlling the flow of the first valve, the second valve, the third valve and the fourth valve, so that the first tin supply tank continuously supplies molten tin with lower temperature to the upstream half area, the molten tin with higher temperature in the upstream half area is discharged into the first tin collecting tank, the second tin supply tank continuously supplies molten tin with lower temperature to the downstream half area, the molten tin with higher temperature in the downstream half area is discharged into the second tin collecting tank, the heating device is used for heating the molten tin in the middle half area, the temperature of the molten tin in the upstream half area is always lower than that of the molten tin in the downstream half area, and the temperature of the molten tin in the downstream half area is always lower than that of the molten tin in the middle half area;
meanwhile, the controller controls the air exhaust power mechanism and the gas supply device to be started simultaneously, protective gas containing tin steam in the metal bathroom is exhausted from the gas outlet, and new protective gas is introduced from the gas inlet for supplement; the protective gas containing tin steam enters the tin collecting mechanism through the first air exhaust pipeline, the tin collecting mechanism utilizes the cooling box body to cool the collecting box, the first inclined pipeline and the second inclined pipeline, so that the tin steam in the protective gas flowing through the collecting box and in the first inclined pipeline and the second inclined pipeline is cooled and condensed into tin liquid, the tin liquid in the first inclined pipeline and the second inclined pipeline can naturally flow into the collecting box, the protective gas after tin removal enters the air exhaust power mechanism through the second air exhaust pipeline, then enters the supply power mechanism through the circulating pipeline, and the protective gas is reheated by the gas heating mechanism and then is introduced into the metal bath chamber through the air inlet pipeline.
(3) Annealing the initial glass plate by using an annealing chamber to form a finished glass plate;
(4) polishing the surface of the finished glass plate to form a polished surface; cleaning the polished surface to remove surface ions;
(5) spraying a coating raw material on the polished surface to form a film layer, wherein the coating raw material comprises 78-82% of silicon dioxide, 7-8% of alkyd resin, 2.5-3.5% of silica gel, 4.5-5.5% of polyphenyl methyl siloxane and the balance of ethanol according to the weight ratio;
(6) and curing the finished product glass plate at 40-55 ℃ for 4-8 min, and then tempering to form the finished product photovoltaic glass plate.
In the step (4), the polished surface of the finished glass plate is firstly cleaned, then the polished surface is washed by deionized water, and then the polished surface is dried.
In the step (2), the temperature of the molten tin in the middle half zone is 1042-; the molten tin in the first and second supply baths is at a temperature of less than 996 ℃.
In step (2), a plurality of said air inlets at the lower part and a plurality of said air outlets at the upper part are included.
In the step (2), the supply power mechanism is further provided with a supplementary gas device for supplying the protective gas.
After the technical scheme is adopted, the thermal cycle environment-friendly glass processing technology breaks through the traditional glass production technology form, a smelting furnace smelts glass raw materials to form glass fluid, firstly protective gas is introduced into a metal bath chamber by using a gas supply device, then a flow channel of the smelting furnace is controlled by a controller to open a flashboard, the glass fluid (higher than 1100 ℃) flows out of a discharge port and flows downwards along an inclined guide plate, when the glass fluid flows onto molten tin liquid in an upstream half area, an initial lifting driving device drives an initial lifting bearing rod to drive an initial flattening roller to descend, and clamping pressure (similar to rolling) is applied to the glass fluid under the supporting action of an initial supporting roller, so that the glass fluid is rolled and flattened and is spread out, and a floating glass belt is formed on the liquid level of the molten tin liquid in the upstream half area, because the temperature of the molten tin liquid is lower, the fluidity of the glass fluid is reduced, the floating glass ribbon is cooled on the molten tin liquid to form glass viscous flow which has higher viscosity and is not easy to tear, and the floating glass ribbon continuously moves downstream along the molten tin liquid along with the continuous supply of glass fluid by the smelting furnace, and flows over the first guide roll and the second guide roll, flows over the downstream half area and enters the annealing chamber; however, this portion of glass is only scrap and is produced for the purpose of forming a continuous ribbon of glass and should not be considered as a final product in the present invention. Then the controller controls the extrusion lifting driving device to drive the extrusion lifting bearing rod to drive the extrusion lifting roller to descend, the floating glass ribbon between the first guide roller and the second guide roller is pressed down and immersed into molten tin and is contacted with the upstream base roller and the downstream base roller, the floating glass ribbon is enabled to form a V shape under the support of the first guide roller and the second guide roller, the controller controls the size of a first gap between the extrusion lifting roller and the upstream base roller and the size of a second gap between the extrusion lifting roller and the downstream base roller, the size of the second gap is smaller than the size of the first gap, the controller controls the extrusion lifting roller and the upstream base roller to perform primary extrusion flattening of the floating glass ribbon with corresponding thickness, and the extrusion lifting roller and the downstream base roller to perform secondary extrusion flattening of the floating glass ribbon with corresponding thickness; the molten tin liquid uniformly stretches and thins the floating glass ribbon by generating upward buoyancy, so that the floating expansion time is reduced, the defect of slow expansion of floating is avoided being fully utilized, the unfolding speed is improved, and the floating glass ribbon is not broken due to the viscous flow state; the defects such as concave-convex and the like on the upper surface and the lower surface of the floating glass belt can be simultaneously flattened and uniformly melted, and the defects such as scratches, bubbles and the like can not occur; the stress difference caused by the temperature difference generated on the upper surface and the lower surface of the floating glass belt can be avoided, the internal stress is released at the two sides simultaneously, and the deformation and the like are avoided; the floating glass ribbon, after entering the molten tin bath in the higher temperature middle and downstream halves, releases internal stresses and increases fluidity, and after bypassing the second guide roll, the floating glass ribbon continues to float and gradually spreads out and thins out at the surface of the molten tin bath in the downstream half. And the middle half area can be heated before the extrusion lifting roller and the downstream base roller extrude the floating glass belt again, so that the plasticity of the floating glass belt is increased instantly, and the extrusion lifting roller and the downstream base roller can extrude the floating glass belt further without cracking. Then, the controller is used for controlling the flow of the first valve, the second valve, the third valve and the fourth valve, so that the first tin supply tank continuously supplies molten tin with lower temperature to the upstream half area, the molten tin with higher temperature in the upstream half area is discharged into the first tin collecting tank, the second tin supply tank continuously supplies molten tin with lower temperature to the downstream half area, the molten tin with higher temperature in the downstream half area is discharged into the second tin collecting tank, the heating device is used for heating the molten tin in the middle half area, the temperature of the molten tin in the upstream half area is always lower than that of the molten tin in the downstream half area, and the temperature of the molten tin in the downstream half area is always lower than that of the molten tin in the middle half area; meanwhile, the controller controls the air exhaust power mechanism and the gas supply device to be started simultaneously, the air exhaust power mechanism exhausts the protective gas containing tin steam in the metal bath from the gas outlet, and the gas supply device introduces new protective gas from the gas inlet for supplement; the protective gas containing tin vapor enters the tin collecting mechanism through the first air exhaust pipeline, the tin collecting mechanism utilizes the cooling box body to cool the tin vapor in the protective gas flowing through the collecting box, the first inclined pipeline and the second inclined pipeline (only a small cooling is needed, the tin vapor can be converted into tin liquid again, for example, the cooling box body contains circulating air with the temperature of 800- The gas heating mechanism can easily heat the protective gas with a certain temperature to the required temperature, so that the energy consumption is obviously reduced on the basis of greatly reducing the resource usage amount, and the gas heating mechanism is low-carbon and environment-friendly. Meanwhile, tin steam in the metal bath chamber can be timely pumped out, and the tin steam in the metal bath chamber can not reach enough concentration in the metal bath chamber and can be condensed into tin liquid to drop on the floating glass belt, so that the glass can not be damaged. The thin photovoltaic glass with the required thickness can be obtained after two times of staged extrusion, cold and hot alternate soaking and floating expansion, and the staged extrusion step by step and the cold and hot alternate soaking can generate flexible action on the floating glass ribbon, so that the floating glass ribbon is not easy to break, and the continuity is stronger. The initial glass sheet is then annealed to form a finished glass sheet. The finished glass sheet is then polished and deionized. And then coating to prepare the photovoltaic glass. Compared with the prior art, the thermal cycle environment-friendly glass processing technology can efficiently produce high-quality photovoltaic glass, particularly cannot be damaged by tin steam, and is energy-saving, environment-friendly and low in cost.
Drawings
FIG. 1 is a first partial cross-sectional structural schematic view of the present invention;
FIG. 2 is a second partial cross-sectional structural schematic of the present invention;
fig. 3 is a partial structural schematic diagram of the present invention.
In the figure:
1-melting furnace 11-runner control gate plate 12-inclined deflector 13-initial leveling roller 131-initial lifting carrier bar 132-initial lifting driving device 14-initial supporting roller
20-gas supply device 201-supply power mechanism 202-gas inlet pipe 203-supplementary gas device
30-gas extraction device 301-suction power mechanism 302-tin collection mechanism 3021-collection tank 3022-first inclined conduit 3023-second inclined conduit 3024-cooling chamber 303-first suction conduit 304-second suction conduit 305-circulation conduit
211-bath 2111-upstream half 2112-downstream half 2113-first tin inlet 2114-first tin outlet 2115-second tin inlet 2116-second tin outlet 212-top cover 213-first tin supply tank 214-first tin collecting tank 21511-upstream base roller 21512-downstream base roller 2152-first guide roller 2153-second guide roller 21541-upstream seal support roller 21542-downstream seal support roller 2155-extrusion lifting roller 21551-extrusion lifting bearing bar 21552-extrusion lifting driving device 2157-intermediate half 21571-heating device 216-second tin supply tank 217-second tin collecting tank 218-air inlet 219-air outlet
3-annealing chamber
10-float glass ribbon.
Detailed Description
In order to further explain the technical solution of the present invention, the following detailed description is given by way of specific examples.
The invention discloses a thermal cycle environment-friendly glass processing technology, which comprises the following steps as shown in figures 1-3:
(1) smelting a glass raw material by using a smelting furnace 1; putting glass raw materials into a smelting furnace 1 and heating to form glass fluid;
(2) carrying out float forming on the glass fluid through a metal bath to form an initial glass plate; the finished glass sheet is formed according to the following steps,
the metal bath room includes a bath 211 containing molten tin at a lower portion thereof, a top cover 212 covering the bath 211, a gas supply device 20 for supplying a shielding gas, a gas exhaust device 30 for exhausting the shielding gas, a first supply tin tank 213 and a second supply tin tank 216 for supplying the molten tin to the bath 211, and a first collection tin tank 214 and a second collection tin tank 217 for containing the molten tin flowing out of the bath 211; the levels of molten tin in the first and second supply tin baths 213 and 216 are higher than the level of molten tin in the bath 211;
the side wall of the bath 211 is formed with an inlet 218 communicating with the gas supply means 20, and an outlet 219 communicating with the gas withdrawal means 30; the air inlet 218 and the air outlet 219 are both higher than the liquid level of the molten tin; the gas supply device 20 includes a supply power mechanism 201, and an inlet pipe 202 connected between the supply power mechanism 201 and the inlet 218; the supply power mechanism 201 includes a gas heating mechanism that heats the shielding gas;
the gas extraction device 30 comprises a gas extraction power mechanism 301, a tin collection mechanism 302 for cooling and collecting tin vapor, a first gas extraction pipeline 303 connected between the gas outlet 219 and the tin collection mechanism 302, a second gas extraction pipeline 304 connected between the tin collection mechanism 302 and the gas extraction power mechanism 301, and a circulation pipeline 305 connected between the gas extraction power mechanism 301 and the supply power mechanism 201; the tin collection mechanism 302 includes a collection tank 3021 under the first suction duct 303 and the second suction duct 304, a first inclined duct 3022 connected between the first suction duct 303 and the collection tank 3021, a second inclined duct 3023 connected between the second suction duct 304 and the collection tank 3021, and a cooling tank 3024 covering the collection tank 3021, the first inclined duct 3022, and the second inclined duct 3023;
the discharge port of the furnace 1 is communicated with the bath 211; the discharge port is provided with a flow passage control flashboard 11; an inclined guide plate 12 which gradually becomes lower from the upstream to the downstream is arranged between the discharge port and the bath 211, the lower end of the inclined guide plate 12 is provided with an initial leveling roller 13 in a horizontal plane and an initial support roller 14 which is parallel to the right below the initial leveling roller 13, the initial leveling roller 13 is vertical to the flow direction of the glass fluid, two ends of the initial leveling roller 13 are provided with an initial lifting bearing rod 131 which is vertically arranged, the initial lifting bearing rod 131 penetrates through a top cover 212, the lower end of the initial lifting bearing rod 131 is connected with the initial leveling roller 13 through a bearing, and the upper end of the initial lifting bearing rod 131 is provided with an initial lifting driving device 132; the initial support roller 14 is positioned below the liquid level of the molten tin, and the initial support roller 14 is connected with the side wall of the bath 211 through a bearing;
a flattening roller set is arranged in the metal bathroom; the flattening roller group includes an upstream base roller 21511 and a downstream base roller 21512 in parallel with the initial flattening roller 13, a first guide roller 2152 in parallel with the initial flattening roller 13 and upstream of the upstream base roller 21511, a second guide roller 2153 in parallel with the initial flattening roller 13 and downstream of the downstream base roller 21512, a squeeze lifter roller 2155 between the upstream base roller 21511 and the downstream base roller 21512, an upstream seal support roller 21541 supported in parallel directly below the upstream base roller 21511, and a downstream seal support roller 21542 supported in parallel directly below the downstream base roller 21512; the upstream base roller 21511, the downstream base roller 21512, the first guide roller 2152, the second guide roller 2153, the upstream seal support roller 21541, and the downstream seal support roller 21542 are all below the level of the molten tin, and the highest point of the pressing lift roller 2155 is higher than the level of the molten tin, the highest points of the upstream base roller 21511 and the downstream base roller 21512 are lower than the highest points of the first guide roller 2152 and the second guide roller 2153, the pressing lift roller 2155 is above the upstream base roller 21511 and the downstream base roller 21512, and the diameter of the pressing lift roller 2155 is larger than the distance between the upstream base roller 21511 and the downstream base roller 21512, the diameters of the upstream base roller 21511 and the downstream base roller 21512 are equal and the axes are in the same horizontal plane, and the distance between the pressing lift roller 2155 and the downstream base roller 21512 is smaller than the distance between the pressing lift roller 2155 and the upstream base roller 21511; the two ends of the extrusion lifting roller 2155 are provided with extrusion lifting bearing rods 21551 which are vertically arranged, the extrusion lifting bearing rods 21551 penetrate through the top cover 212, the lower ends of the extrusion lifting bearing rods 21551 are connected with the extrusion lifting roller 2155 through bearings, and the upper ends of the extrusion lifting bearing rods 21551 are provided with extrusion lifting driving devices 21552; a first gap through which the glass fluid passes is formed between the upper end of the upstream base roller 21511 and the lower end of the pressing elevation roller 2155, and a second gap through which the glass fluid passes is formed between the upper end of the downstream base roller 21512 and the lower end of the pressing elevation roller 2155; the lower end of the upstream base roller 21511 contacts the upper end of the upstream seal support roller 21541, and the lower end of the upstream seal support roller 21541 contacts the bottom of the bath 211; the lower end of the downstream base roller 21512 contacts the upper end of the downstream seal support roller 21542, and the lower end of the downstream seal support roller 21542 contacts the bottom of the bath 211; the upstream base roller 21511, the downstream base roller 21512, the first guide roller 2152, the second guide roller 2153, the upstream seal support roller 21541, and the downstream seal support roller 21542 are all connected to the side wall of the bath 211 by bearings; the pinch lift roller 2155, the upstream base roller 21511, the downstream base roller 21512, the first guide roller 2152, the second guide roller 2153, the upstream seal support roller 21541, and the downstream seal support roller 21542 divide the bath 211 into an upstream half 2111 upstream of the first guide bar, the upstream base roller 21511, and the upstream seal support roller 21541, a downstream half 2112 downstream of the second guide bar, the downstream base roller 21512, and the downstream seal support roller 21542, and a middle half 2157 below the pinch lift roller 2155; the side wall of the bath 211 is formed with a first tin inlet 2113 communicated with the first tin supply tank 213, a first tin outlet 2114 communicated with the first tin collection tank 214, a second tin inlet 2115 communicated with the second tin supply tank 216, and a second tin outlet 2116 communicated with the second tin collection tank 217; a first valve is provided at the first tin inlet 2113, a second valve is provided at the first tin outlet 2114, a third valve is provided at the second tin inlet 2115, and a fourth valve is provided at the second tin outlet 2116; the first tin inlet 2113 and the first tin outlet 2114 are positioned in the upstream half-zone 2111, and the first tin inlet 2113 and the first tin outlet 2114 are positioned below the liquid level of molten tin; the second tin inlet 2115 and the second tin outlet 2116 are positioned in the downstream half-zone 2112, and the second tin inlet 2115 and the second tin outlet 2116 are positioned below the liquid level of molten tin; a heating device 21571 is provided in the middle half-zone 2157; the molten tin in the upstream half 2111 is at a lower temperature than the molten tin in the downstream half 2112, and the molten tin in the downstream half 2112 is at a lower temperature than the molten tin in the intermediate half 2157; the temperature of the molten tin in the first supply tin bath 213 is lower than that in the upstream half 2111, and the temperature of the molten tin in the second supply tin bath 216 is lower than that in the downstream half 2112; the level of molten tin in the upstream half 2111 is level with the level of molten tin in the downstream half 2112 and the middle half 2157;
in the process of forming an initial glass plate by the float process, firstly, protective gas is introduced into a metal bath by a gas supply device 20, then, the controller controls the flow path control shutter 11 of the melting furnace 1 to open, the glass fluid flows out from the discharge port and flows down along the inclined deflector 12, when the molten glass flows onto the molten tin in the upstream half 2111, the initial elevation drive device 132 drives the initial elevation support bar 131 to lower the initial leveling roller 13, the glass fluid is pinched and pressurized by the primary support roll 14, causing the glass fluid to be rolled out and spread out and form a floating glass ribbon 10 on the surface of the molten tin bath in the upstream half 2111, and as the furnace 1 continues to supply the glass fluid, the floating glass ribbon 10 continues to move downstream along the molten tin bath, and floats over the first and second guide rolls 2152, 2153, through the downstream half 2112 and into the annealing chamber 3;
then the controller controls the extrusion lifting driving device 21552 to drive the extrusion lifting bearing rod 21551 to drive the extrusion lifting roller 2155 to descend, the floating glass ribbon 10 between the first guide roller 2152 and the second guide roller 2153 is pressed down and immersed into molten tin liquid and is in contact with the upstream base roller 21511 and the downstream base roller 21512, the floating glass ribbon 10 forms a V shape under the support of the first guide roller 2152 and the second guide roller 2153, the controller controls the size of a first gap between the extrusion lifting roller 2155 and the upstream base roller 21511 and the size of a second gap between the extrusion lifting roller 2155 and the downstream base roller 21512, the size of the second gap is smaller than that of the first gap, the controller controls the extrusion lifting roller 2155 and the upstream base roller 21511 to extrude and flatten the floating glass ribbon 10 for the first time by the extrusion lifting roller 2155 and the downstream base roller 21512, and flatten the floating glass ribbon 10 again by the extrusion lifting roller 2155 and the downstream base roller 21512;
then, the controller is used for controlling the flow of the first valve, the second valve, the third valve and the fourth valve, so that the first supply tin bath 213 continuously supplies molten tin with lower temperature to the upstream half 2111, the molten tin with higher temperature in the upstream half 2111 is discharged into the first collection tin bath 214, the second supply tin bath 216 continuously supplies molten tin with lower temperature to the downstream half 2112, the molten tin with higher temperature in the downstream half 2112 is discharged into the second collection tin bath 217, the heating device 21571 is used for heating the molten tin in the middle half 2157, the temperature of the molten tin in the upstream half 2111 is always lower than that of the molten tin in the downstream half 2112, and the temperature of the molten tin in the downstream half 2112 is always lower than that of the molten tin in the middle half 2157;
meanwhile, the controller controls the air exhaust power mechanism 301 and the gas supply device 20 to start up simultaneously, so as to exhaust the protective gas containing tin vapor in the metal bath from the gas outlet 219 and introduce new protective gas from the gas inlet 218 for supplement; the protective gas containing tin vapor enters the tin collecting mechanism 302 through the first air exhaust pipeline 303, the tin collecting mechanism 302 cools the collecting box 3021, the first inclined pipeline 3022 and the second inclined pipeline 3023 by using the cooling box 3024, so that the tin vapor in the protective gas flowing through the collecting box 3021, the first inclined pipeline 3022 and the second inclined pipeline 3023 is cooled and condensed into tin liquid, the tin liquid in the first inclined pipeline 3022 and the second inclined pipeline 3023 naturally flows into the collecting box 3021, the protective gas after tin removal enters the air exhaust power mechanism 301 through the second air exhaust pipeline 304, then enters the supply power mechanism 201 through the circulating pipeline 305, and is reheated by the gas heating mechanism and then enters the metal bath chamber through the air inlet pipeline 202 from the air inlet 218.
(3) Annealing the initial glass plate by using an annealing chamber 3 to form a finished glass plate;
(4) polishing the surface of the finished glass plate to form a polished surface; cleaning the polished surface to remove surface ions;
(5) spraying a coating raw material on the polished surface to form a film layer, wherein the coating raw material comprises 78-82% of silicon dioxide, 7-8% of alkyd resin, 2.5-3.5% of silica gel, 4.5-5.5% of polyphenyl methyl siloxane and the balance of ethanol according to the weight ratio;
(6) and curing the finished product glass plate at 40-55 ℃ for 4-8 min, and then tempering to form the finished product photovoltaic glass plate.
In the practical working process of the invention, a smelting furnace 1 smelts glass raw materials to form glass fluid, firstly protective gas is introduced into a metal bath by using a gas supply device 20, then a flow channel of the smelting furnace 1 is controlled by a controller to control a flashboard 11 to be opened, the glass fluid (higher than 1100 ℃) flows out from a discharge port and flows downwards along an inclined flow deflector 12, when the glass fluid flows onto molten tin liquid in an upstream half region 2111, an initial lifting drive device 132 drives an initial lifting bearing rod 131 to drive an initial leveling roller 13 to descend, and clamping pressure (similar to calendering) is applied to the glass fluid under the supporting action of an initial supporting roller 14, so that the glass fluid is rolled flatly and paved, and a floating glass ribbon 10 is formed on the liquid level of the molten tin liquid in the upstream half region 2111, because the temperature of the molten tin liquid is lower, the fluidity of the glass fluid is reduced, the floating glass ribbon 10 is cooled on the molten tin liquid to form glass viscous flow with higher viscosity and difficult tearing, as the furnace 1 continues to supply glass flow, the floating ribbon 10 continues to travel downstream along the molten tin bath, over the first and second guide rolls 2152, 2153, over the downstream half 2112 and into the annealing chamber 3; however, this portion of glass is only scrap and is produced for the purpose of forming a continuous ribbon of glass and should not be considered as a final product in the present invention. Then the controller controls the extrusion lifting driving device 21552 to drive the extrusion lifting bearing rod 21551 to drive the extrusion lifting roller 2155 to descend, the floating glass ribbon 10 between the first guide roller 2152 and the second guide roller 2153 is pressed down and immersed into molten tin liquid and is in contact with the upstream base roller 21511 and the downstream base roller 21512, the floating glass ribbon 10 is formed into a V shape under the support of the first guide roller 2152 and the second guide roller 2153, the size of a first gap between the extrusion lifting roller 2155 and the upstream base roller 21511 and the size of a second gap between the extrusion lifting roller 2155 and the downstream base roller 21512 are controlled by the controller, the size of the second gap is smaller than that of the first gap, the controller controls the first extrusion thinning of the floating glass ribbon 10 by the extrusion lifting roller 2155 and the upstream base roller 21511 according to the thickness, and the second extrusion flattening of the floating glass ribbon 10 by the extrusion lifting roller 2155 and the downstream base roller 21512 according to the thickness; the molten tin liquid uniformly stretches and thins the floating glass ribbon 10 to generate upward buoyancy, so that the floating expansion time is reduced, the defect of slow expansion of full utilization of floating is avoided, the expansion speed is increased, and the floating glass ribbon 10 cannot be broken due to the viscous flow state; the defects such as concave-convex on the upper surface and the lower surface of the floating glass ribbon 10 can be simultaneously flattened and uniformly melted, and the defects such as scratches, bubbles and the like can not occur; the stress difference caused by the temperature difference generated on the upper surface and the lower surface of the floating glass ribbon 10 can be avoided, the internal stress is released on the two sides at the same time, and the deformation and the like are avoided; as the floating ribbon 10 enters the molten tin in the higher temperature intermediate section 2157 and downstream section 2112, internal stresses are relieved and flow is enhanced, and as the floating ribbon 10 passes around the second guide roll 2153, the level of the molten tin in the downstream section 2112 continues to float and progressively thins out. And the middle half-zone 2157 can be heated before the pressing lifter roller 2155 and the downstream base roller 21512 re-press the floating glass ribbon 10, thus instantly increasing the plasticity of the floating glass ribbon 10, and facilitating the pressing lifter roller 2155 and the downstream base roller 21512 to further thin the floating glass ribbon 10 without cracking. Then, the controller is used for controlling the flow of the first valve, the second valve, the third valve and the fourth valve, so that the first supply tin bath 213 continuously supplies molten tin with lower temperature to the upstream half 2111, the molten tin with higher temperature in the upstream half 2111 is discharged into the first collection tin bath 214, the second supply tin bath 216 continuously supplies molten tin with lower temperature to the downstream half 2112, the molten tin with higher temperature in the downstream half 2112 is discharged into the second collection tin bath 217, the heating device 21571 is used for heating the molten tin in the middle half 2157, the temperature of the molten tin in the upstream half 2111 is always lower than that of the molten tin in the downstream half 2112, and the temperature of the molten tin in the downstream half 2112 is always lower than that of the molten tin in the middle half 2157; meanwhile, the controller controls the air-extracting power mechanism 301 and the gas supply device 20 to start simultaneously, the air-extracting power mechanism 301 extracts the protective gas containing tin vapor from the gas outlet 219, and the gas supply device 20 introduces new protective gas from the gas inlet 218 for supplement; the protective gas containing tin vapor enters the tin collecting mechanism 302 through the first air exhaust pipeline 303, the tin collecting mechanism 302 cools the collecting tank 3021, the first inclined pipeline 3022 and the second inclined pipeline 3023 by using the cooling tank 3024, so that the tin vapor in the protective gas flowing through the collecting tank 3021, the first inclined pipeline 3022 and the second inclined pipeline 3023 is cooled (only by a small cooling, if the tin vapor can be converted into tin liquid again, for example, the cooling tank 3024 contains circulating air with a temperature of 800 ℃., and the temperature of the protective gas containing tin vapor is reduced to about 950 ℃ by using the circulating air, so that the tin vapor can be condensed into tin liquid, the tin liquid in the first inclined pipeline 3022 and the second inclined pipeline 3023 naturally flows into the collecting tank 3021, the protective gas after tin removal enters the air exhaust power mechanism 301 through the second air exhaust pipeline 304, and then enters the supply power mechanism 201 through the circulating pipeline 305, the protective gas is reheated by the gas heating mechanism and then introduced into the metal bath chamber from the gas inlet 218 through the gas inlet pipeline 202, the protective gas with a certain temperature can be easily heated to a required temperature by the gas heating mechanism, the consumption of energy is obviously reduced on the basis of greatly reduced resource usage, and the metal bath chamber is low-carbon and environment-friendly. Meanwhile, tin steam in the metal bath chamber can be timely pumped out, and the tin steam in the metal bath chamber can not reach enough concentration in the metal bath chamber and can be condensed into tin liquid to drop on the floating glass belt 10, so that the glass can not be damaged. The thin photovoltaic glass with the required thickness can be obtained after two times of staged extrusion, cold and hot alternate soaking and floating expansion, and the staged progressive extrusion and the cold and hot alternate soaking can generate a flexible action on the floating glass ribbon 10, so that the floating glass ribbon 10 is not easy to break, and the continuity is stronger. The initial glass sheet is then annealed to form a finished glass sheet. The finished glass sheet is then polished and deionized. And then coating to prepare the photovoltaic glass. It is further preferred that the cooling box 3024 is filled with circulating air at 800-. Further preferably, the gas heating mechanism may specifically include a heating elbow pipe through which the shielding gas flows and directly heats the shielding gas. Further preferably, the supply power mechanism 201 and the exhaust power mechanism 301 further comprise a fan.
In the first embodiment, in the step (5), a coating raw material is sprayed on the polished surface to form a film layer, wherein the coating raw material comprises 78% of silicon dioxide, 8% of alkyd resin, 2.5% of silica gel, 5.5% of polyphenyl methyl siloxane and the balance of ethanol according to the weight ratio;
in the step (6), the finished product glass plate is placed at 40 ℃ for curing for 8min, and then is tempered to form the finished product photovoltaic glass plate.
The coating film is in a fog shape, forms stronger diffuse reflection and can not reflect light directly.
In the second embodiment, in the step (5), a coating raw material is sprayed on the polished surface to form a film layer, wherein the coating raw material comprises, by weight, 82% of silicon dioxide, 7% of alkyd resin, 3.5% of silica gel, 4.5% of polyphenyl methyl siloxane, and the balance of ethanol;
in the step (6), the finished product glass plate is placed at 55 ℃ for curing for 4min, and then is tempered to form the finished product photovoltaic glass plate.
The coating film is in a fog shape, forms stronger diffuse reflection and can not reflect light directly.
In the third embodiment, in the step (5), a coating raw material is sprayed on the polished surface to form a film layer, wherein the coating raw material comprises 80% of silicon dioxide, 7.5% of alkyd resin, 3% of silica gel, 5% of polyphenyl methyl siloxane and the balance of ethanol according to the weight ratio;
in the step (6), the finished product glass plate is placed at the temperature of 40-55 ℃ for curing for 4-8 min, and then the finished product photovoltaic glass plate is formed through tempering.
The coating film is in a fog shape, forms stronger diffuse reflection and can not reflect light directly.
Preferably, protective gas is introduced into the metal bath room, wherein the protective gas is a mixed gas of nitrogen and hydrogen, the volume ratio of the nitrogen is 90-95%, and the volume ratio of the hydrogen is 5-10%.
Preferably, in step (4), the polished surface of the finished glass plate is firstly cleaned, then the polished surface is washed by deionized water and then dried, and particularly, the polished surface is dried by deionized air. The step can ensure that the polished surface is clean and ion-free, and is beneficial to improving the coating quality.
Preferably, in step (2), the temperature of the molten tin in the middle half-zone 2157 is 1042-; the temperature of the molten tin in the downstream half-zone 2112 is 1019-1042 ℃, and the molten tin in the downstream half-zone 2112 at the temperature is more beneficial to the temperature rise of the thinner floating glass ribbon 10 to improve the fluidity, so that the thinner floating glass ribbon 10 is beneficial to flattening and cannot be distorted and deformed due to overhigh fluidity; the temperature of the molten tin in the upstream half-zone 2111 is 996-1019 ℃, and the molten tin in the upstream half-zone 2111 at the temperature is more beneficial to the temperature reduction and the fluidity reduction of the thicker floating glass ribbon 10, so that the viscosity is enhanced and the thinning and flattening are facilitated; the molten tin in the first and second supply baths 213 and 216 has a temperature of less than 996 c, and the molten tin at this temperature can effectively dilute and cool the molten tin in the upstream half 2111 and the downstream half 2112 while ensuring higher fluidity.
Preferably, in step (2), a plurality of air inlets 218 at a lower portion and a plurality of air outlets 219 at an upper portion are included. In the actual working process of the invention, because the tin vapor floats upwards in multiple directions, the gas outlet 219 at the upper part can more efficiently extract the protective gas containing the tin vapor, and the gas inlet 218 at the lower part can directly and continuously contact the new protective gas with the floating glass ribbon 10, thereby ensuring that the protective gas can effectively protect the glass ribbon; the uniform distribution of the plurality of air inlets 218 and the plurality of air outlets 219 can make the protective gas in the metal bath more uniform and stable, the condition of local tin vapor accumulation can not occur, and the glass quality is further improved. The air intake duct 202 is formed with a plurality of air intake branch ducts connected to the respective air inlets 218 in a one-to-one correspondence, and the first air exhaust duct 303 is formed with a plurality of air exhaust branch ducts connected to the respective air outlets 219 in a one-to-one correspondence.
Preferably, in step (2), the supply power mechanism 201 is further provided with a supplementary gas device 203 for supplying the shielding gas. In the actual working process, when the protective gas after multiple cycles is reduced due to factors such as leakage and the like, the protective gas can be supplemented to the supply power mechanism 201 by the supplementing gas device 203, so that the amount of the protective gas is stable and effective.
Preferably, in step (2), the first tin inlet 2113 has a height lower than that of the first tin outlet 2114, and the second tin inlet 2115 has a height lower than that of the second tin outlet 2116. In the actual working process, because the molten tin liquid at higher temperature is easier to move upwards, the arrangement of the step is more beneficial to discharging the molten tin liquid at higher temperature from the first tin outlet 2114 and the second tin outlet 2116, and the molten tin liquid at lower temperature is uniformly and continuously supplemented, so that the temperature of the molten tin liquid in the upstream half-area 2111 and the downstream half-area 2112 is always kept in a stable lower temperature range.
Preferably, in step (2), the upstream seal backup roll 21541 and the downstream seal backup roll 21542 include a roll main body and a high temperature-resistant seal layer wrapped around the circumferential surface of the roll main body. The specific structure can be that, high temperature resistant sealing layer is the flexible layer structure that carborundum fibre, silicon nitride fibre or ceramic fiber cotton made, can realize sealedly with the mode of flexible contact with the department of contact, avoids carrying out too fast circulation and heat exchange between half district 2111 and the half district 2112 of low reaches.
The product form of the present invention is not limited to the embodiments and examples shown in the present application, and any suitable changes or modifications of the similar ideas should be made without departing from the patent scope of the present invention.
Claims (5)
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| JP4612331B2 (en) * | 2004-04-30 | 2011-01-12 | オーセラ株式会社 | Refractory material for float bath and float bath |
| CN102923937A (en) * | 2012-11-22 | 2013-02-13 | 中国建材国际工程集团有限公司 | Tin liquor processing method for float glass and ultra-thin float glass |
| CN103570221A (en) * | 2013-11-08 | 2014-02-12 | 蚌埠玻璃工业设计研究院 | Molten tin bath with filter device |
| CN104058576A (en) * | 2014-06-30 | 2014-09-24 | 成都光明光电股份有限公司 | Method and device for manufacturing float glass |
| CN106865959A (en) * | 2017-03-17 | 2017-06-20 | 四川旭虹光电科技有限公司 | The circulation utilization method of 3D glass tin tank shielded gas |
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Address after: 363213 Taibo Industrial Park, Jiuzhen, Zhangpu County, Zhangzhou City, Fujian Province Patentee after: Tg Fujian Photovoltaic Glass Co.,Ltd. Address before: 363213 Taibo Industrial Park, Jiuzhen, Zhangpu County, Zhangzhou City, Fujian Province Patentee before: TAIWAN GLASS FUJIAN PHOTOVOLTAIC GLASS CO.,LTD. |
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Denomination of invention: A thermal cycle environmentally friendly glass processing technology Granted publication date: 20210803 Pledgee: China Construction Bank Zhangpu Branch Pledgor: Tg Fujian Photovoltaic Glass Co.,Ltd. Registration number: Y2024980051890 |