Classifications

• • C—CHEMISTRY; METALLURGY
  • C03—GLASS; MINERAL OR SLAG WOOL
  • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
  • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
  • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
  • C03B5/18—Stirring devices; Homogenisation
  • C03B5/183—Stirring devices; Homogenisation using thermal means, e.g. for creating convection currents
  • C03B5/185—Electric means
• • 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

Definitions

• the invention relates to a glass production device and a molding process method, which can be used for manufacturing a high crystallization temperature glass product having a crystallization temperature higher than a conventional molding temperature of 10 3 ' Q Pa ⁇ s, which is used for manufacturing: float flat glass Products, ultra-thin electronic TFT glass products, high scratch-resistant and wear-resistant electronic glass products, Gefa flat glass products, overflow down-draw flat glass products, calendered flat glass products, glass fiber products, drawn glass products, pressed glass Products, blown glass products. Background technique
• the prior art believes that: the crystallization temperature of the glass is higher than the conventional molding
• the temperature is 10 3 Pa.
• the conventional glass product production line especially the melting device of the float line and the glass unit of the cooling work unit, can only be clarified and clarified.
• the upper part is equipped with a gun warming device and a device for measuring the temperature, and an electric heating device and a temperature measuring device are never installed in the lower middle layer of the cooling working device.
• the prior art CN101357819A is a noble metal material heating device.
• an indirect externally wound heating plate or wire is provided, which is used for further heating and re-clarification.
• most of these devices are for liters.
• the high temperature is used to discharge the bubbles again, rather than the actual device for homogenization and cooling.
• the middle and lower layers of the cooling work unit are not equipped with precise heating and control temperature measuring devices (conventional floating
• the method production line only has an electric melting furnace or a melting device with a separate amount of galvanizing, so that an electric heating device is installed in the middle and lower portions of the molten glass of the melting device; and a device for measuring temperature is never installed in the middle and lower portions of the molten glass; It does not install precise heating and control temperature measurement devices in the lower and middle layers of the cooling work unit); and all conventional glass production lines, especially the upper glass liquid and the middle and lower glass liquid in many areas of the float production line (middle and lower layers refer to The 40% or 40°/.
• the lateral exit of the gap of the diversion tank of the cooling working device is never in the molten glass from the tin kiln.
• the longitudinal direction of 0. 5m there are 2-10 electric heating devices and temperature measuring devices arranged in the horizontal direction.
• the corresponding viscosity temperature of the prior art glass liquid into the tin kiln is set to 10 3 Pa ⁇ s; in the prior art float process technology system, the glass ribbon The balanced thickness of the flattening is set to 6.3mm or 6 to 7mm; in the prior art technology related to the float process, the viscosity temperature of the flattened glass ribbon is limited to 10 3 ⁇ 7 Pa ⁇ s to 10 4 ⁇ 2 Pa ⁇ seconds.
• the ultra-thin electronic grade ultra-thin float glass with a thickness of 0.5mm has unstable waviness quality and cannot be stabilized at a distance of 20mm and the waviness does not exceed 0.15 microns. Within the level.
• ultra-thin electronic float glass with a thickness of 0.05mm to 0.3mm can never be produced at all.
• the present invention overcomes the above technical bias and opens up a new glass production line system.
• the technical solution of the process device especially the technical device scheme of the new float glass system and the institutional technical scheme of the molding process, solves the problems of various technologies and produces unexpected technical effects.
• the present invention constructs the following technical solutions.
• a glass production apparatus comprising: (1) a mixing device for mixing glass raw materials; (2) a melting device for melting the mixed glass raw material and discharging the bubbles of the molten glass (3) a cooling working device, the cooling working device for homogenizing, clarifying and cooling the molten glass, wherein the cooling working device is characterized in that: the lower layer is installed with 2 to 100 mutual distances An electric heating device and a temperature measuring device of 0.2 m to 6 m; (4) a molding device for forming a cooled glass liquid into a glass product;
• the middle and lower layers refer to a portion in which the glass working chamber of the cooling working portion is metered from the bottom to the range of 0 to 80%.
• the glass production apparatus is characterized in that: the middle and lower layers of the cooling working device are installed with 6 to 100 or 20 to 100 electric heating devices and temperature measuring devices with a mutual distance of 0.2 m to 4 m. .
• the glass production apparatus is characterized in that: an electric heating device is installed at a position within a range of 0.1 m to 1.5 m at a left or right corner of a middle and lower layer of the cooling work unit device in a direction of a molding device; The temperature lowering device is installed; the middle and lower layers of the melting device are installed with 2 to 100 electric heating devices and temperature measuring devices having a mutual distance of 0.2 m to 4 m;
• the middle and lower layers refer to a portion in which the molten glass chamber of the melting device is metered from the bottom to the range of 0 to 80%.
• the glass production equipment is characterized in that: the cooling working device has the following options:
• cooling work unit for glass fiber production or cooling large flow channel device
• cooling work unit or cooling flow avenue device for drawing glass products
• Option 4 pressing the cooling work part for the production of glass products or cooling the large flow channel device;
• Option 5 cooling working part for blowing glass products or cooling large flow channel device;
• the glass production equipment is characterized in that: the molding device has the following several options - selection 1, a tin kiln float forming device for producing float glass;
• the glass production apparatus characterized by: a glass float production apparatus, comprising:
• the mixing device mixing glass raw materials
• the melting device melts the mixed glass raw material, and discharges bubbles of the molten glass; and cools the working portion, the cooling working portion homogenizes and clarifies and cools the molten glass, and the middle and lower layers of the cooling working portion are installed
• There are 2 to 100 electric heating devices and temperature measuring devices having a mutual distance of 0. 2m to 4m; 0.1m of the middle or lower layer of the cooling working portion near the left or right corner of the side of the tin kiln
• An electric heating device and a temperature measuring device are installed in a range of up to 1.5 m;
• the tin kiln flattens, polishes, and thins the glass to form a glass ribbon;
• the middle and lower layers refer to a portion in which the glass working chamber of the cooling working portion is metered from the bottom to the range of 0 to 80%.
• the glass production apparatus wherein: the tin kiln is connected to the cooling working device through a flow guiding groove, and the longitudinal direction at the lateral exit of the sandwiching groove of the guiding groove is 0. Within a distance of 5m, there are 2-10 electric heating devices and temperature measuring devices arranged horizontally, and the width of the jaws of the guiding groove is 1 to 3 m.
• a molding process method for a glass production apparatus wherein: The temperature at which the glass liquid enters the molding system device at a distance of 0.5 to 9 m is higher than the crystallization temperature of the glass material by 20 to 150 V; the temperature viscosity of the molten glass from the cooling working device to the molding system device is 10 2 ⁇ " 1 Pa. Second to 10 Pa ⁇ s.
• a glass material having a crystallization temperature higher than a conventional molding temperature of 10 3 Pa ⁇ s especially those having a crystallization temperature higher than a conventional molding temperature of 10 3 Pa*s, having a low viscosity temperature, high strength, and excellent thermal expansion coefficient.
• the glass material due to the technical guarantee of the innovative glass production equipment, can stably produce high-performance glass materials with low viscosity temperature, low thermal expansion coefficient and high strength; and stable production without devitrification and crystallization.
• High-light transmittance quality glass materials such as: float flat glass products, lattice flat glass products, overflow down-draw flat glass products, calendered flat glass products, glass fiber products, drawn glass products, pressed glass products, Blowing glass products.
• the technical scheme and the process system of the present invention are higher than the prior art float process system.
• the viscosity is much lower, the speed difference between the edger and the puller and the drawing machine can be better, the pulling amount can be better controlled, and the pulling amount can be increased under the same equipment condition to achieve high quality.
• Increase float The goal of the production of glass. .
• the prior art electronic glass only a single electronic glass enterprise, can use the float process to produce an electronic grade ultra-thin electronic float glass product with a thickness of 0. 5ram, but its waviness quality is also very unstable;
• the TFT electronic glass produced by the process can not be stabilized at a level of 20 mm and the waviness is not more than 0.10 to 0.15 micrometers. Therefore, the TFT electronic float glass product must be polished and polished.
• the balance thickness of the glass ribbon in the float glass technology of the invention is 1 mm - 5 mm; the balance thickness of the glass strip of the invention is 6 to 7 times thinner than the conventional 6 legs; : According to the traditional glass ribbon, the balance thickness is 6 mm - 7 mm, and the thinning ratio is 0. 7 mm.
• the 10 mm thinning ratio of the glass ribbon of the present invention is flattened by a thickness of 1 mm - 2 mm.
• the float glass of the ultra-thin electronic field is more preferably obtained by the above-mentioned method.
• FIG. 1 is a schematic view of a float glass 1 produced by a float production apparatus according to the present invention
• FIG. 2 is a schematic view of a float production apparatus of the present invention
• FIG. 3 is a partial warming apparatus of a lower middle portion of the melting apparatus of FIG.
• a schematic diagram of the temperature measuring device; and the cooling working device can have a similar structure;
• Figure 4 is a process flow diagram of Figure 2.
• the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. Based on the embodiments of the present invention, one of ordinary skill in the art does not create All other embodiments obtained under the premise of sexual labor are within the scope of protection of the present invention.
• the crystallization temperature of the glass is higher than the conventional molding temperature by 10 3 Pa. In seconds, since the glass is devitrified, it is impossible to produce; therefore, for example, the melting device of the conventional float line and the glass of the cooling work unit
• the homogenization and clarification steps only install the gun warming device and the temperature measuring device in the upper part.
• the prior art glass material is not easily devitrified, there is no precise heating and control temperature measuring device installed in the conventional glass product production line, especially the melting device of the float production line and the middle and lower layers of the cooling working device (conventional float method)
• the production line only has an electric melting furnace or a separate melting device, and an electric heating device is installed in the middle and lower parts of the glass liquid of the deuteration device; and the device for measuring the temperature is never installed in the middle and lower portions of the glass liquid; Accurate heating and control of the temperature measurement device will not be installed in the middle and lower layers of the homogenized, clarified cooling work unit; it will never be at the corners of the left and right sides of the middle and lower layers of the cooling work unit in the direction of the kiln. 0.
• FIG. 1 is a schematic illustration of a float glass 12 produced by a float process apparatus in accordance with the present invention.
• the production apparatus of the float glass of the present invention comprises: a silo 2, a mixing device 3, a melting device 4, a guide trough 5, a cooling working device 6, a tin kiln 7, a transition roller table 8, and annealing. Kiln 9, cutting and dispensing station 10. These parts are all installed on the float On the line base 11.
• the raw material 1 of the glass is mixed and poured into the silo 2 in proportion, and enters the mixing device 3.
• the mixing device 3 may have a pulverizer which can increase the degree of mixing of the raw material 1.
• the melting device 4 melts the mixed raw materials.
• the middle and lower layers of the deuteration device 4 are equipped with 3 to 200 electric heating devices 41 and 3 to 200 temperature measuring devices 42 having a distance of 0.2 m to 4 m.
• the molten glass liquid enters the cooling work unit device 5, and the cooling work unit device 5 performs processes such as bubble discharge, homogenization, and clarification.
• the middle and lower layers of the cooling working device 5 are installed with 3 to 200 electric heating devices having a distance of 0.2 m to 4 m and 3 to 200 measuring temperature devices having a distance of 0.2 m to 2 m, in the cooling working device.
• An electric heating device and a device for measuring the temperature are installed in the lower layer at a position of 0.1 m to 1, 5 m at the corner of the left and right sides in the direction of the kiln.
• the liquid flowing out of the cooling working device 5 passes through the guiding trough 6 and enters the tin kiln 7, which has a guiding trough 6 in front of the tin kiln 7, and the longitudinal exit at the lateral exit of the jaw of the guiding trough 6 is 0.5 m. Within the distance, there are 2-10 electric heating devices and temperature measuring devices arranged horizontally.
• the glass ribbon formed in the tin kiln 7 is annealed by the transition roll table 8 and the annealing kiln 9, and the annealed glass plate enters the cutting and dispensing station 10 for slitting and packaging.
• the cavity 4 only a partial schematic view of a more specific structure in the middle and lower layers of the melting device and the cooling work device; 41 indicates that the electric heating device - 42 indicates the temperature measuring device; the actual melting device and the cooling working portion In the device, a plurality of electric heating devices and temperature measuring devices are provided; the lower middle layer refers to an area where 0 to 80% is measured upward from the bottom of the cavity of the melting device and the cooling working device.
• S101 Mixing raw materials of sodium oxide, aluminum oxide, silicon oxide, magnesium oxide and calcium oxide into the silo 2, and entering the mixing device 3 with the silo, and stirring the mixing device 3.
• the content of sodium oxide is 6% by weight
• the content of alumina is 25%
• the content of silica is three times that of calcium oxide
• the content of calcium oxide is 1.4 times that of magnesium oxide.
• S103 Pour the sufficiently mixed raw material into a melting device to form a molten glass having a predetermined viscosity. The bubbles are then discharged in the cooling unit, and then homogenized and clarified.
• S104 The graphite material device is installed on both sides of the tin kiln 7, and there are five cooling water purifying devices; the tin kiln 7 has a guiding trough 6 at the front, and the lateral exit of the jinch of the guiding trough 6 In the longitudinal 0.5m distance, there are 6 electric heating devices and temperature measuring devices arranged horizontally; 4 electric heating devices and temperature measuring devices are respectively arranged on the safety gate and the throttle side of the tin kiln; The width of the slot of the slot is 2M at the exit.
• the temperature viscosity of the molten glass entering the tin kiln from the cooling working unit 5 is 10 2 ⁇ 6 Pa ⁇ s, and the temperature at a distance of 0.5 m before entering the kiln 7 is higher than the crystallization temperature of the glass material of 60 V.
• S105 The glass liquid is poured into the kiln 7 for flattening, polishing, and thinning to form a glass ribbon, wherein the glass ribbon is flattened to have a balanced thickness of 3 mm; and the glass ribbon is flattened to have a temperature viscosity of 10 29 .
• the glass produced by the above examples has the following parameters:
• the crystallization temperature of the glass material is 60 V higher than the molding temperature of 10 3 Pa ⁇ s;
• the thickness of the glass is 0.3 mm;
• the glass is within a level of no more than 0.10 microns of waviness at a distance of 20 mm;
• the thickness difference of the glass is less than 0.01 mm;
• S201 Mixing sodium oxide, aluminum oxide, silicon oxide, and calcium oxide into the silo 2, and entering the mixing device 3 with the silo, and the mixing device 3 is stirred.
• the content of sodium oxide is 0.1% by weight
• the content of alumina is 15%
• the content of silicon oxide is 4 times that of calcium oxide
• the content of calcium oxide is 1.8 times that of magnesium oxide.
• S202 160 electric heating devices and temperature measuring devices with a distance of 0.5 m are installed in the middle and lower layers of the melting device 4; 160 electric heating devices with a distance of 0.5 m are installed in the middle and lower layers of the cooling working device 5, and the temperature is measured.
• the apparatus and the apparatus for measuring the temperature are installed at a position of 0.3 m in the vicinity of the two corners of the left and right sides in the direction of the kiln in the middle and lower layers of the cooling work unit.
• S203 Pour the sufficiently mixed raw material into the melting device 4 to form a molten glass having a predetermined viscosity. Then, the air bubbles are discharged from the cooling work unit 5, and then homogenized and clarified.
• the temperature of the molten glass entering the tin kiln from the cooling working unit 5 is 102.6 Pa ⁇ s, and the temperature at the distance of 0.5 m before entering the kiln 7 is higher than the crystallization temperature of the glass material by 50 V.
• S205 flattening, polishing, and thinning to form a glass ribbon, wherein the glass ribbon has a balanced thickness of 1.8 mm; the glass ribbon has a flat temperature viscosity of 10 2 ' 5 '.
• the glass produced by the above examples has the following parameters:
• the crystallization temperature of the glass material is 50 V higher than the molding temperature of 10 3 Pa ⁇ s;
• the thickness of the glass is 0.16 mm;
• the glass is within a level of no more than 0.10 microns of waviness at a distance of 20 mm;
• the thickness difference of the glass is less than 0.013 mm;
• S301 Mixing sodium oxide, aluminum oxide, silicon oxide, and calcium oxide into the silo 2, and entering the mixing device 3 with the silo 2, and the mixing device 3 is stirred.
• the content of sodium oxide is up to 14 ° / by weight.
• the alumina content is up to 10%
• the content of silica is 7 times the content of calcium oxide
• the content of calcium oxide is 1 times the content of magnesium oxide.
• S302 110 electric heating devices and temperature measuring devices with a distance of lm are installed in the middle and lower layers of the melting device 4, and 110 electric heating devices with a distance of lm are installed in the middle and lower layers of the cooling working device 5, and the temperature is measured.
• the apparatus and the apparatus for measuring the temperature are installed at a range of lm at two corners of the left and right sides of the cooling work unit in the direction of the kiln.
• S303 Pour the sufficiently mixed raw material into the melting device 4 to form a molten glass having a predetermined viscosity. Then, the air bubbles are discharged from the cooling work unit 5, and then homogenized and clarified.
• S304 The graphite material device is installed on both sides of the tin kiln 7, and there are five cooling water packages; the tin kiln 7 has a guiding groove 6 in front of it, and the longitudinal exit at the lateral exit of the sandwiching groove 6 Within the distance of 0.5m, there are 7 electric heating devices and temperature measuring devices arranged in the horizontal direction; 3 electric heating devices and temperature measuring devices are also arranged on the safety gate and the throttle side of the tin kiln. The width of the jaw of the jaw is 1.5M.
• the temperature of the molten glass entering the tin kiln from the cooling working unit 5 is 102.6 Pa ⁇ s, and the temperature at the distance of 0.5 m before entering the kiln 7 is higher than the crystallization temperature of the glass material by 70 V.
• S305 flattening, polishing, and thinning to form a glass ribbon, wherein the glass ribbon has a balanced thickness of 3.6 mm; the glass ribbon has a flat temperature viscosity of 10 3 pascals.
• the glass produced by the above examples has the following parameters:
• the crystallization temperature of the glass material is 40 V higher than the molding temperature of 10 3 Pa ⁇ s;
• the thickness of the glass is 3 mm;
• the thickness difference of the glass is less than 0.05 mm ;
• the glass material with a crystallization temperature higher than the conventional 10 3 Pa "second forming temperature, especially those having a crystallization temperature higher than the conventional 10 3 Pa ⁇ s molding temperature, has a low viscosity temperature, high strength, and excellent thermal expansion coefficient.
• Glass material due to the technical guarantee of the innovative glass production equipment, it can stably produce high-performance glass materials with low viscosity temperature, high strength and low thermal expansion coefficient, and stable production of high light without devitrification and crystallization.
• Transmissive quality glass materials such as: float flat glass products, lattice flat glass products, overflow down-draw flat glass products, calendered flat glass products, glass fiber products, drawn glass products, pressed glass products, Blowing glass products.
• the prejudice of the most important traditional float process technology system that can be solved by the present invention is: A.
• the crystallization temperature of the glass material property is higher than the conventional molding temperature of 10 3 Q Pa ⁇ s, due to the easy devitrification of the glass. , can never be produced on the float line;
• B can not do only 0.05mm to 0.3mm to 0.2mm thickness, and its quality can be stabilized in the float of 20mm distance waviness not more than 0.15 microns
• Technical problems of electronic glass
• C float electronic glass products, can not be stable at 20mm distance Technical difficulties in the level of waviness not exceeding 0.15 microns;
• the present invention enables a glass material having a crystallization temperature higher than a conventional molding temperature of 10 3 QPa ⁇ sec, especially those having a crystallization temperature higher than a conventional molding temperature of 10 Pa*sec, having a low viscosity temperature, high strength, and thermal expansion.
• the glass material with excellent coefficient properties can not only produce high-performance products stably in the float flat glass process, but also obtain high light transmittance quality without devitrification and crystallization.
• One of the specific technical solutions is:
• the present invention is a glass material for ensuring a high crystallization temperature, especially a glass material having a low viscosity temperature, high strength, and excellent thermal expansion coefficient, which has a crystallization temperature lower than a conventional forming temperature of 10 3 Pa ⁇ s.
• Process production commissioning providing newly invented floating equipment for the float glass process and all parts of the upper, middle and lower layers of the homogenized, clarified cooling work unit, all with means for heating the glass temperature and measuring the temperature, so that all the glass Before the molding, the liquid is completely higher than the crystallization temperature of the glass material, which can provide reliable process equipment guarantee.
• the corresponding viscosity temperature of the prior art glass liquid into the tin kiln is set to 10 3 Pa ⁇ s; in the prior art float process technology system, the glass ribbon The balanced thickness of the flattening is set to 6.3mm or 6 to 7mm ; in the prior art technology related to the float process, the viscosity temperature of the flattened glass ribbon is limited to 10 3 ⁇ 7 Pa ⁇ s to 10 4 ⁇ 2 Pa ⁇ seconds.
• the middle and lower layers of the clarified and ventilated cooling work unit are equipped with precise electric heating and measuring the temperature control device and 0.1 m at the two corners of the left and right sides of the middle and lower layers of the cooling work unit in the direction of the kiln. Installation of electric heating devices and temperature measuring devices in the range of up to 1.5 m, while the upper glass liquid and the lower middle of many areas of the conventional float production line The temperature difference between the layers of the molten glass is about 150 °C_250 °C.
• the middle and lower layers refer to the glass liquid area which is measured from the bottom up to 0 to 40% or 40% to 80% depth;
• the invention is to be innovative, in order to ensure that the temperature of the middle and lower parts of the melting device and the homogenized, clarified cooling working device must be higher than when the glass material having a crystallization temperature higher than the conventional 10 3 QPa ⁇ second forming temperature is used.
• the crystallization temperature ensures that the molten glass does not devitrify, so that almost all of the lower and lower portions of the molten glass can be flowed by heating, and the temperature of the lower middle and lower portions of the molten glass can be accurately determined, and it is necessary to make a float in the glass product production line.
• the present invention is in the middle and lower layers of the homogenizing and clarifying cooling working device of the float line (the lower middle layer refers to the glass liquid)
• the lower layer in the 0 to 80% area measured from the bottom is the 40% and 40% to 80% depth of the placed glass area measured from the bottom up), and the installation is 2 - 100 or 6 - 100 Or between 20 and 100 electrically heated devices with a distance of 0.5 to 6 m and an accuracy of between 0.5 and 4 m installed between 2 and 100 or 6 to 100 or 20 to 100
• the temperature measuring device can overcome the problem that the temperature difference between the lower layer and the upper layer of the prior art is 150 ⁇ --250 ;; it can ensure that the glass liquid is prevented from being accurately measured and controlled by the temperature of the molten glass before entering the forming kiln of the float process. , the glass liquid is cooled down to the crystallization point, and the glass liquid is
• the present invention is in the middle and lower layers of the cooling work unit of the float line (the lower middle layer refers to the 0 to 80% area where the glass liquid is measured from the bottom), and is installed with 2 - 100 or 6 - 100 Or between 20 and 100 electrically heated devices with a distance of 0.5 to 4 m and installed with a distance of between 2 and 100 or 6 to 100 or 20 to 100 with an accuracy of 0.5M to 6M.
• the temperature measuring device is installed at an angle of 0.1 m to L5 m from the corner of the left and right sides of the tin kiln in the middle and lower layers of the cooling working device, and is equipped with an electric heating device and a temperature measuring device; the corner can be overcome, especially
• the problem of temperature difference between the lower layer and the upper layer is 150'C-250 ⁇ , to ensure that the glass liquid is prevented from being accurately measured and controlled by the temperature rise, and the glass liquid is cooled to the crystallization point before entering the forming tin kiln of the float process. Next, the glass liquid is devitrified.
• the glass material which has the characteristics of higher crystallization temperature and low viscosity temperature which is especially suitable for the invention the bubble is more likely to be in the high temperature process period, and the temperature is controlled to maximize the discharge of air bubbles; Due to the cooling of the middle and lower layers of the working device, not only the electric heating device but also the temperature measuring device is installed, so that it can be accurately controlled at a temperature of only 30 ° C - 50 above the crystallization point (generally 1230 °) The constant temperature state of C-128CTC), so there is no problem of product bubble quality caused by the second large temperature increase to make the cooled microbubbles become larger again.
• the present invention provides a horizontal arrangement of 2-10 electric heating devices and a temperature measuring device in a longitudinal direction of a distance of 0.5 m from the tin kiln entering the lateral exit of the chute of the cooling working device.
• the lateral exit of the ferrule of the diversion trough can be overcome and the safety brake
• the accumulated glass liquid is cooled and devitrified and flows into the tin kiln, which causes defects in product quality, ensuring that the glass liquid is accurately measured before the molten steel process enters the forming tin kiln of the float process. Control the hysteresis of the temperature rise, and the glass liquid is cooled down to the crystallization point, and the glass liquid is devitrified;
• the tin kiln of the present invention there are devices made of graphite on the two sides of the edger, and three to five cooling water-packing devices are used to prevent each time (the glass strip is flattened).
• the viscosity of the glass liquid which occurs during the leveling process is too low, and it is difficult to clean the glass liquid by preventing the glass from sticking to the edge of the kiln;
• it has more innovative 3-5 water-cooling water-packing devices than conventional ones in order to control the equipment of the glass liquid which has been much higher than the temperature of the conventional process when entering the tin kiln, which is beneficial to the flattening
• the widened glass ribbon produced by the high temperature molten glass has a flattened width, and the purpose of balancing the thickness of the 1 to 5 mm glass ribbon of the present invention which is thinner than the ordinary glass ribbon with a balanced thickness of 6 mm is ensured.
• the crystallization temperature in the present invention is higher than the conventional 10 3 .
• the invention can make the glass material with the crystallization temperature higher than the conventional forming temperature of 10 3 ° Pa * sec, can stably produce the high-performance product in the float flat glass process, and can obtain the devitrification and the
• the high light transmittance quality of crystallization has broken the technical bias of the traditional float process technology system, the corresponding viscosity of the molten glass flowing into the kiln is 10 3 Pa ⁇ s, and the specific technical solution II - the present invention
• the glass material whose crystallization temperature is higher than the conventional io 3 ' Q Pa ⁇ second molding temperature in order to control the temperature of the glass liquid, the melting, bubble discharge, and clarification process stages before the molding process Above the range of the crystal
• the necessary hardware device for the liquid to devitrify is especially necessary to ensure the clarification and exhausting of the tail portion of the cooling working device.
• the distance from 0.5m to 6m must control the temperature of the molten glass to be higher than the crystallization temperature. 10 3 Pa ⁇ s 30 ⁇ to 150 , that is, the temperature viscosity should be 10 2 ⁇ 01 Pa ⁇ s to 10 2 ⁇ 5 Pa, seconds 10 2 ⁇ 9 Pa, sec, to prevent accurate measurement and control of the glass temperature After the temperature rises later, the purpose of ensuring that the glass liquid does not devitrify before entering the forming tin kiln can be achieved.
• the technical solution of the temperature of the glass liquid of the invention entering the tin kiln is 10 2 ' 0 Pa ⁇ sec to 110 2 ⁇ 5 Pa ⁇ s 10 2 9 Pa ⁇ s can be realized; Moreover, it is a technical effect to be described later: it is advantageous for better flatness, waviness quality, and the technical basis to lay a technological foundation for the production trend of electronic glass thinning.
• the invention also breaks the technical balance of the traditional float forming process technology system, the balanced thickness of the glass strip is 63mm or about 6 to 7mm; 2, breaking the traditional float forming process technology system
• the flattened viscosity temperature of the glass strip is limited to the technical solution of technical bias of 10 3 ⁇ 7 Pa ⁇ s to 10 4 ⁇ 2 Pa ⁇ s:
• the temperature of the glass liquid is higher than the crystallization temperature of 10 3 Pa ⁇ s, 30 to 15 (the temperature of TC, that is, the temperature viscosity is 10 2 Q Pa ⁇ s to 10 2 ⁇ 5 Pa ⁇ s 10 2 ⁇ 9 Pa ⁇ s , adopting a process system that compares the prior art float process technology system molding process, and requires a much higher temperature and a much lower viscosity;
• the temperature viscosity of the present invention before entering the forming tin kiln process stage to be ⁇ 2 ⁇ Pa ⁇ sec to 10 2 ⁇ 5 Pa ⁇ s to 10 2 ⁇ 9 Pa ⁇ s, gradually lowering the temperature to the flattened glass strip after entering the tin kiln
• the temperature viscosity is innovative from ⁇ 2 ⁇ 4 Pa ⁇ s to 10 3 ⁇ 9 Pa ⁇ s, which can also break the traditional float molding process technology.
• the viscosity temperature of the glass strip is limited to 10 3 ⁇ 7 Pa ⁇ Technical bias of seconds to 10 4 ⁇ 2 Pascals* Second: [Line 4 to 5 in page 85 of the book "Floating Glass Production Operation Questions and Answers" published by China Chemical Industry Press in 2007): Glass forming and flattening Must adapt to the flattening temperature range, ... the corresponding viscosity range is 10 3 ⁇ 7 Pa ⁇ s to 10 4 ⁇ 2 Pa ⁇ s]; and can be used for the better described flatness, waviness quality and In terms of improving the technical characteristics, it lays a foundation for the production of products that are more light and thinner than electronic glass.
• the temperature of the glass strip is flat and the viscosity is innovative ⁇ 2 ⁇ 4 Pa ⁇ s to
• the above innovations overcome the technical bias of prior art glass product line equipment, in particular the technical bias of conventional float line equipment and the technical bias of various molding process systems: Overcoming the melting device of existing glass lines, In particular, the middle and lower layers of the homogenized, clarified cooling work unit are not fully equipped with technical biases for installation of warming and precise control of the temperature measuring device; and overcoming the left and right sides of the tin kiln in the cooling work unit
• the corner is at a position of 0.1 m to 1.5 m, without the technical prejudice of installing an electric warming device and a temperature measuring device; and the longitudinal direction at the lateral exit of the jaw of the diversion trough that enters the cooling kiln into the cooling work device Within 0.5m distance, there is no technical bias to arrange 2-10 electric heating devices and temperature measuring devices in the lateral direction; no electric heating device and temperature measuring device are provided on the safety brake lever and the throttle gate in front of the tin kiln.
• an innovative float process system technical solution for controlling the temperature of the glass liquid before entering the tin kiln to be higher than the crystallization temperature of 30 to 150 ° C; and the glass liquid entering the tin kiln
• the temperature-viscosity is 10 2 ⁇ Pa ⁇ s to 10 2 ⁇ 5 Pa ⁇ s 10 2 ⁇ 9 Pa ⁇ s of the innovative float process system technical solution; and the float process system glass strip flat temperature viscosity 10 2 ⁇ 4 Pa, seconds to 10 3 ' 9 Pa * second innovative float process system technical solution; and glass belt flattened balance thickness of 1mm to 2mm or 2mm to 5mm innovative float process system technical solutions;
• the present invention is in the middle and lower layers of the cooling working device of the float line (the lower middle layer refers to the glass liquid measured upward from the bottom).
• the lower middle layer refers to the glass liquid measured upward from the bottom.
• the old floating float process prevents the glass liquid from falling below the crystallization point due to the accurate measurement of the temperature of the molten glass and the control of the temperature rise, and the glass liquid is devitrified.
• the viscosity temperature of the leveling process of the process system of the present invention is 10 24 Pa "second to 10 3 ' 6 Pa * sec, so the tension of the glass liquid and the tension of the conventional balanced thickness are greatly changed. Creating a new balanced balance between tension and gravity;
• the invention can provide a process platform for the precise process control of the molten glass liquid flowing into the tin kiln, which can make the molten glass temperature high and the viscosity is very low, and enters the glass belt booth.
• the flat balance thickness can be 1mm - 5mm; compared with the traditional 6mm - 7mm, the balance thickness of the flat glass of the invention is 6 to 7 times thin; for example: the balance thickness of the flat glass is 6 mm - 7 mm Compared with the 10 times thinning ratio of 0.7 mm, the glass ribbon of the invention has a balanced thickness of 2 mm, and the 10 times thinning ratio is more favorable for the thinning to obtain the 0, 1-2 mm.
• the ratio of the 5 times of the thinning ratio is compared. 5 times less than the prior art for the thinning rate, it is obviously advantageous to stabilize the technical quality of the waviness not exceeding 0.15 micron at a distance of 20 mra.
• the defects are as follows:
• the heating device mainly acts on the upper surface portion, so the lower flat surface is more temperature-lower than the upper surface plane, and in the process of stretching from several times to ten times in only 1 to 2 minutes, the lower surface Due to the relatively high viscosity, more large waviness defects are generated, which is an important problem in the prior art. It is intended to control the temperature of the thinned viscosity to a better range, but the temperature of the glass ribbon of the upper process of the prior art is low and the thickness is large, and the prior art has inevitably brought about the temperature of the glass strip surface.
• the upper and lower temperature difference is large, and the lower glass liquid process is unlikely to be heated rapidly, so that the product has a high waviness quality problem; and due to the process of the invention, the glass ribbon enters the tin surface, is leveled, and is polished.
• the temperature is higher than that of the prior art in the prior art, and the temperature of the glass ribbon itself is much higher than that of the prior art glass ribbon due to the prior art forming, leveling and polishing processes.
• the thermal conductivity of the tin liquid is hundreds of times that of the glass.
• the temperature difference of the flat surface of the glass sheet is balanced, and the glass belt surface is The self-temperature is high, the temperature difference between the upper and lower sides is small, the thickness is small, and the thinness difference is smaller, which can overcome the technical problems of the prior art.
• the balanced thickness is 1 mm to 5 mm; compared with the conventional 6 mm-7 mm, the balanced thickness of the glass ribbon of the invention is 6 to 7 times thinner; for example: according to the traditional glass belt Flat balance thickness 6 mm - 7 mm thinning is 0.7 mm 10 times thinning ratio comparison, the glass ribbon of the invention has a balanced thickness of 0.1 mm - 2 mm 10 times thinning rate meter, comprehensive measures, more The thin 0.1 mm to 0.2 mm ultra-thin electronic float glass is obtained by thinning.
• the electronic glass process with the first float technology is solved, and the thickness of the glass is only 0.1 mm to 0.2 mm, and the float glass is stable at a level of 20 mm and the waviness is not more than 0.15 ⁇ m.
• Technical problems Unexpected technical effects, representing the technological trends of future float technology in the development of ultra-thin electronic glass thinning technology.
• the technical solution and the process system of the present invention are much lower in viscosity than the prior art float process system in the four process stages in which the molten glass of the same composition flows into the tin kiln, is flattened, polished, and thinned.
• the amount of pulling between the edger and the edger and the drawing machine increase the amount of pulling under the same equipment conditions, and increase the float glass under the premise of high quality. The goal of production.
• the prior art has never disclosed and disclosed the technical arrangement of the process equipment and the new glass forming process of the above-mentioned glass product production line of the present invention; in particular, the innovative system process equipment technical scheme of the new float glass and the new float The system of the glass forming process;
• the glass material having a crystallization temperature higher than the conventional 10 3 Pa, second molding temperature, especially those having a crystallization temperature higher than the conventional 10 3 Pa has a low viscosity temperature at a second molding temperature.
• Glass material with high strength and excellent thermal expansion coefficient Due to the technical guarantee of innovative glass production equipment, it can stably produce high-performance glass materials with low viscosity temperature, high strength and low thermal expansion coefficient, and stable production.
• a glass material having high light transmittance quality without devitrification and crystallization such as: float flat glass products, grid glass products, overflow down glass flat glass products, calendered flat glass products, glass fiber products, Pull tube glass products, pressed glass products, blown glass products.
• the technical solution of the present invention represents a new development trend of the process equipment and the molding process system of the above various high performance glass products.
• the technical solutions of the new float glass process equipment and the system technology of the float glass forming process also represent a new trend in the development of ultra-thin electronic glass to a more light and thin high-quality process device and molding process;
• the technical solution of the present invention breaks the traditional technical prejudice and the unexpected technological advancement effect produced by the technical solution, and is not obvious to those skilled in the art; the present invention has never been disclosed or disclosed by the prior art.
• Process technology for a new glass production line Case especially the technical scheme of the new float glass system and the technical scheme of the float glass forming process system, and produced unexpected technical effects, and it is not a post-consideration of simple logical reasoning or simple The test can be obtained; it is a solution to the technical problems that people are eager to solve but have not solved yet; the unexpected effects produce "quality” and "quantity” changes, the inventive solution is non-obvious, with outstanding Substantial characteristics and significant technological advances.

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• 2013
  • 2013-05-06 CN CN 201310161605 patent/CN103232151A/zh not_active Withdrawn
  • 2013-05-06 WO PCT/CN2013/000508 patent/WO2013181923A1/fr not_active Ceased

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