CN113532695A - Tin bath physical simulation method suitable for float glass - Google Patents
Tin bath physical simulation method suitable for float glass Download PDFInfo
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- CN113532695A CN113532695A CN202110933467.1A CN202110933467A CN113532695A CN 113532695 A CN113532695 A CN 113532695A CN 202110933467 A CN202110933467 A CN 202110933467A CN 113532695 A CN113532695 A CN 113532695A
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- 238000000034 method Methods 0.000 title claims abstract description 93
- 238000004088 simulation Methods 0.000 title claims abstract description 84
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 239000005329 float glass Substances 0.000 title claims abstract description 46
- 239000011521 glass Substances 0.000 claims abstract description 56
- 238000010438 heat treatment Methods 0.000 claims abstract description 50
- 238000005498 polishing Methods 0.000 claims abstract description 37
- 238000003756 stirring Methods 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 238000005303 weighing Methods 0.000 claims abstract description 8
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000013461 design Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000006060 molten glass Substances 0.000 description 5
- 238000005457 optimization Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000026676 system process Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004379 similarity theory Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 210000004127 vitreous body Anatomy 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- 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
- C03B18/18—Controlling or regulating the temperature of the float bath; Composition or purification of the float bath
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
The invention relates to a tin bath physical simulation method suitable for float glass, which is characterized by comprising the following steps: weighing a glass simulation batch according to a float glass viscosity-temperature characteristic curve to be simulated; putting the mixture into a heating and stirring device, and stirring the mixture for 120 to 180min at the temperature of between 90 and 180 ℃; opening a heating system to heat the polishing solution, wherein the temperature is set to be 40-120 ℃, and a bottom temperature sensor feeds back the temperature of the polishing solution; after each area of the tin bath model reaches the set time and temperature, opening the edge roller, the drawing system and the image acquisition system, and setting parameters; opening a valve of the heating and stirring device and an image acquisition system, simulating glass liquid to flow into a tin bath model, starting the polishing, flattening, thinning and forming processes, recording the simulation process by the image acquisition system, and leading out a glass belt by a drawing system; the thickness and width of the ribbon were measured and experimental data were recorded. The invention has the advantages that: the accuracy of the temperature can be ensured by adopting contact temperature measurement; the method can simulate the forming process of the glass with different viscosities by the in-bath floating method.
Description
Technical Field
The invention relates to a physical simulation method, in particular to a physical simulation method which can simulate the polishing, flattening, thinning and forming processes of float glass in a tin bath to obtain relevant simulation process parameters.
Background
The tin bath is an important thermal equipment in the production process of float glass, and is a forming area of glass, molten glass is heated by a kiln, enters the tin bath through a regulating flashboard of a cooling part, is spread out on the molten tin surface, is thinned and polished, and is thinned or thickened by an edge roller to produce glass sheets with different thicknesses and thicknesses. At present, the adjustment of technological parameters such as flattening, thinning and forming in a tin bath depends on intuition and experience of engineering personnel, and the repeated consistency of the technological parameters cannot be realized.
The tin bath physical simulation experiment is also called tin bath model experiment, namely, in a small-size model similar to a tin bath prototype, simulation liquid similar to high-temperature vitreous humor is utilized, on the basis of a similar theory, the tin bath model is utilized to carry out experiment observation and measurement on required data, and related scientific experiments are carried out under the condition of being close to room temperature. More complete information can be obtained by physical simulation, such as data that can provide all relevant variables (e.g., pulling speed, temperature field variation, etc.).
At present, no report is found about a tin bath physical simulation method, a 'float glass tin bath physical simulation device' is provided in the patent publication No. CN211374583U, and the inventor finds that the utility model has at least the following technical problems: 1. the utility model adopts non-contact infrared temperature measurement for temperature feedback, when the glass simulation liquid flows through the tin bath model, the non-contact infrared thermometer can only measure the temperature of the glass simulation liquid, and can not measure the temperature of the bottom polishing liquid, so that the polishing liquid heating area can not provide accurate temperature feedback; 2. the effects of the edge rollers and the drawing system process parameters on the thickness and width of the glass ribbon are not described; 3. physical modeling methods for glasses of different viscosities are not described.
Disclosure of Invention
In order to solve the existing problems, the invention provides a tin bath physical simulation method suitable for float glass; according to the invention, the temperature of each area can be ensured to be accurate by adopting contact type temperature measurement in different areas at the bottom of the tin bath model; the viscosity of the simulation liquid can be adjusted according to different float glass viscosity-temperature characteristics to be simulated, namely the viscosity of the simulation liquid is different due to different glass simulation batch mixture proportions; the effect of the edge finishing and drawing system process parameters on the thickness and width of the glass ribbon was simulated.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a tin bath physical simulation method suitable for float glass comprises a heating and stirring device (2), a valve (3), a tin bath model (4), an edge roller (7), a drawing system (8) and a heating system (9); the device is characterized in that the following devices are added: temperature sensors (10) are arranged in different areas at the bottom of the tin bath model, and an image acquisition system (11) is arranged above the tin bath model;
the method comprises the following steps:
s1, weighing glass simulation batch according to the float glass viscosity-temperature characteristic curve to be simulated;
s2, putting the weighed glass simulation batch into a heating and stirring device for heating and stirring, and stirring for 120-180 minutes at 90-180 ℃ to fully homogenize the glass simulation batch;
s3, opening a heating system of the tin bath model to heat the polishing solution in four areas in the model, setting the temperature within the range of 40-120 ℃, and feeding back the temperature of the polishing solution by a bottom temperature sensor;
s4, after the four areas of the tin bath model reach the set time and temperature, simultaneously opening an edge roller, a drawing system and an image acquisition system in the tin bath model, and setting parameters of the edge roller and the drawing system;
s5, opening a valve of the heating and stirring device and an image acquisition system, simulating glass liquid to flow into the tin bath model, starting the polishing, flattening, thinning and forming processes, recording the simulation process by the image acquisition system, and leading out the formed glass belt by a drawing system;
and S6, measuring the thickness and the width of the formed glass ribbon, recording process parameters and other experimental data.
Further, the viscosity-temperature characteristic curve of the float glass in the step S1, i.e. the viscosity-temperature curve of the glass, is calculated according to the viscosity-temperature curve of the float glass and a similarity theory, and then the viscosity of the simulation liquid at the corresponding temperature segment is weighed out, and then a certain proportion of glass simulation batch is weighed.
Further, the heating area of the tin bath model in the step S3 is divided into four areas of polishing, flattening, thinning and forming, the temperature sensor is inserted into the polishing solution from the bottom of the model, and when the temperature of the polishing solution reaches a set temperature, the heating system stops heating; when the temperature of the polishing solution is lower than the set temperature, the heating system heats the polishing solution.
Further, the temperature sensor in the tin bath model of the step S3 adopts contact type temperature measurement, the temperature control precision is +/-0.1 ℃, baffles are arranged among different heating areas to realize the temperature gradient of different areas, and the accuracy of the temperature of each heating area is effectively ensured.
Further, the number of pairs of the edge rollers in the step S4 is 3-6, the swing angle of the edge rollers is 0-10 degrees, and the speed of the drawing system is 10-36 m/h.
Further, the step S5 of recording the simulation process by the image acquisition system is to record the polishing, flattening, thinning and forming processes of the simulation liquid in the tin bath model by means of video images, so as to facilitate visual analysis of the influence of the simulation liquid with different process viscosities and process parameters on the forming process of the glass ribbon.
Compared with the prior art, the invention has the following advantages:
1) the temperature sensor in the tin bath model adopts contact temperature measurement, the temperature control precision is +/-0.1 ℃, baffles are arranged among different heating areas to realize the temperature gradient of the different areas, and the accuracy of the temperature of each heating area is effectively ensured;
2) the forming process of the glass tin bath internal floating method with different viscosities can be simulated by adjusting the viscosity of the simulation liquid;
3) an image acquisition system is adopted to record the simulation process, so that the influence of simulation liquid with different process viscosities and process parameters on the forming process of the glass ribbon can be conveniently and visually analyzed;
4) the method can obtain the tin bath process parameters of the glass simulation liquid, and provides corresponding simulation data for the process design of the float glass tin bath and the process technology route optimization of the float glass production line.
Drawings
FIG. 1 is a graph of viscosity versus temperature for simulated fluids of various proportions provided in an example of the invention of the present application;
FIG. 2 is a schematic top view of an experimental simulation specimen in a tin bath physical simulation method for float glass according to the present invention;
FIG. 3 is a schematic side view of an experimental simulation specimen in the tin bath physical simulation method for float glass according to the present invention.
Detailed Description
For a further understanding of the invention, the invention is described in detail below with reference to fig. 1, 2, 3 and the specific embodiments, wherein fig. 2 and 3: 1-simulation liquid, 2-heating and stirring device, 3-valve, 4-tin bath model, 5-formed glass belt, 6-polishing liquid, 7-edge roller, 8-drawing system, 9-heating system, 10-temperature sensor and 11-image acquisition system.
Example 1
A tin bath physical simulation method suitable for float glass comprises the following specific implementation steps:
s1, weighing a No. 4 sample simulation batch in the figure 1 according to a certain proportion according to a float glass viscosity-temperature characteristic curve to be simulated;
s2, putting the weighed glass simulation batch into a heating and stirring device 2 for heating and stirring, and stirring for 120 minutes at 150 ℃ to fully homogenize the glass simulation batch;
s3, opening a heating system 9 in the tin bath model 4 to heat the polishing solution 6 in four areas in the model, wherein the temperature setting range is 40-90 ℃, and a bottom temperature sensor 10 feeds back the temperature of the polishing solution 6;
s4, setting parameters of the edge roller 7 and the drawing system 8 after the four areas of the tin bath model reach the set time and temperature, wherein the number of pairs of the edge roller is 3, the angle is 0-10 degrees, and opening the edge roller 7 and the drawing system 8 in the tin bath model;
s5, opening a valve 3 and an image acquisition system 11 on the side surface of the heating and stirring device, simulating that the molten glass 1 flows into the tin bath model 4, starting the polishing, flattening, thinning and forming processes, recording the simulation process by the image acquisition system 11, and leading out the formed glass ribbon 5 through a drawing system 8;
and S6, measuring the thickness and the width of the formed glass ribbon, recording process parameters and other experimental data.
The influence of the process parameters of the edge roller, the drawing system and the like on the thickness and the width of the glass strip can be obtained by combining the experimental data and the process parameters obtained by the physical simulation of the tin bath, and corresponding simulation data is provided for the process design of the float glass tin bath and the process technology route optimization of the float glass production line by comparing the process parameters with the process parameters of the float glass production line.
Example 2
A tin bath physical simulation method suitable for float glass comprises the following specific implementation steps:
s1, weighing a No. 4 sample simulation batch in the figure 1 according to a certain proportion according to a float glass viscosity-temperature characteristic curve to be simulated;
s2, putting the weighed glass simulation batch into a heating and stirring device 2 for heating and stirring, and stirring for 120 minutes at 150 ℃ to fully homogenize the glass simulation batch;
s3, opening a heating system 9 in the tin bath model 4 to heat the polishing solution 6 in four areas in the model, wherein the temperature setting range is 40-90 ℃, and a bottom temperature sensor 10 feeds back the temperature of the polishing solution 6;
s4, setting parameters of the edge roller 7 and the drawing system 8 after the four areas of the tin bath model reach the set time and temperature, wherein the number of pairs of the edge roller is 4, the angle is 0-10 degrees, and opening the edge roller 7 and the drawing system 8 in the tin bath model;
s5, opening a valve 3 and an image acquisition system 11 on the side surface of the heating and stirring device, simulating that the molten glass 1 flows into the tin bath model 4, starting the polishing, flattening, thinning and forming processes, recording the simulation process by the image acquisition system 11, and leading out the formed glass ribbon 5 through a drawing system 8;
and S6, measuring the thickness and the width of the formed glass ribbon, recording process parameters and other experimental data.
The influence of the process parameters of the edge roller, the drawing system and the like on the thickness and the width of the glass strip can be obtained by combining the experimental data and the process parameters obtained by the physical simulation of the tin bath, and corresponding simulation data is provided for the process design of the float glass tin bath and the process technology route optimization of the float glass production line by comparing the process parameters with the process parameters of the float glass production line.
Example 3
A tin bath physical simulation method suitable for float glass comprises the following specific implementation steps:
s1, weighing the 5# sample simulation batch in the figure 1 according to a certain proportion according to a float glass viscosity-temperature characteristic curve to be simulated;
s2, putting the weighed glass simulation batch into a heating and stirring device 2 for heating and stirring, and stirring for 150 minutes at 180 ℃ to fully homogenize the glass simulation batch;
s3, opening a heating system 9 in the tin bath model 4 to heat the polishing solution 6 in four areas in the model, wherein the temperature setting range is 40-110 ℃, and a bottom temperature sensor 10 feeds back the temperature of the polishing solution 6;
s4, setting parameters of the edge roller 7 and the drawing system 8 after the four areas of the tin bath model reach the set time and temperature, wherein the number of pairs of the edge roller is 4, the angle is 0-10 degrees, and opening the edge roller 7 and the drawing system 8 in the tin bath model;
s5, opening a valve 3 and an image acquisition system 11 on the side surface of the heating and stirring device, simulating that the molten glass 1 flows into the tin bath model 4, starting the polishing, flattening, thinning and forming processes, recording the simulation process by the image acquisition system 11, and leading out the formed glass ribbon 5 through a drawing system 8;
and S6, measuring the thickness and the width of the formed glass ribbon, recording process parameters and other experimental data.
The influence of the process parameters of the edge roller, the drawing system and the like on the thickness and the width of the glass strip can be obtained by combining the experimental data and the process parameters obtained by the physical simulation of the tin bath, and corresponding simulation data is provided for the process design of the float glass tin bath and the process technology route optimization of the float glass production line by comparing the process parameters with the process parameters of the float glass production line.
Example 4
A tin bath physical simulation method suitable for float glass comprises the following specific implementation steps:
s1, weighing the sample No. 5 in the figure 1 according to a certain proportion according to a float glass viscosity-temperature characteristic curve to be simulated;
s2, putting the weighed glass simulation batch into a heating and stirring device 2 for heating and stirring, and stirring for 150 minutes at 180 ℃ to fully homogenize the glass simulation batch;
s3, opening a heating system 9 in the tin bath model 4 to heat the polishing solution 6 in four areas in the model, wherein the temperature setting range is 40-110 ℃, and a bottom temperature sensor 10 feeds back the temperature of the polishing solution 6;
s4, setting parameters of the edge roller 7 and the drawing system 8 after the four areas of the tin bath model reach the set time and temperature, wherein the number of pairs of the edge roller is 5, the angle is 0-10 degrees, and opening the edge roller 7 and the drawing system 8 in the tin bath model;
s5, opening a valve 3 and an image acquisition system 11 on the side surface of the heating and stirring device, simulating that the molten glass 1 flows into the tin bath model 4, starting the polishing, flattening, thinning and forming processes, recording the simulation process by the image acquisition system 11, and leading out the formed glass ribbon 5 through a drawing system 8;
and S6, measuring the thickness and the width of the formed glass ribbon, recording process parameters and other experimental data.
The influence of the process parameters such as the edge roller, the drawing system and the like on the thickness and the width of the glass strip can be obtained by combining the experimental data and the process parameters obtained by the physical simulation of the tin bath, and corresponding simulation data is provided for the process design of the float glass tin bath and the process technology route optimization of the float glass production line by comparing the parameters with the parameters of the float glass production line.
Secondly, the specific process parameter settings and simulation data results of each implementation example are shown in table 1.
Table 1 simulation parameter settings and simulation data results for each example
| Examples | Example one | Example two | EXAMPLE III | Example four |
| Heating and stirring temperature (. degree.C.) | 150 | 150 | 180 | 180 |
| Heating and stirring time (minutes) | 120 | 120 | 150 | 150 |
| Log edge roller (pair) | 3 | 4 | 4 | 5 |
| Swing angle (degree) of |
0～10 | 0～10 | 0～10 | 0～10 |
| Pulling speed (meter/hour) | 12 | 15 | 18 | 28 |
| Thickness of glass ribbon (mm) | 2.35 | 1.24 | 0.81 | 0.46 |
| Glass width (mm) | 195 | 208 | 223 | 239 |
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; those skilled in the art can make numerous possible variations and modifications to the present teachings, or modify equivalent embodiments to equivalent variations, without departing from the scope of the present teachings, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent replacement, equivalence, change and modification of the above embodiments according to the technical essence of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (6)
1. A tin bath physical simulation method suitable for float glass comprises a heating and stirring device (2), a valve (3), a tin bath model (4), an edge roller (7), a drawing system (8) and a heating system (9); the device is characterized in that the following devices are added: temperature sensors (10) are arranged in different areas at the bottom of the tin bath model, and an image acquisition system (11) is arranged above the tin bath model;
the method comprises the following steps:
s1, weighing glass simulation batch according to the float glass viscosity-temperature characteristic curve to be simulated;
s2, putting the weighed glass simulation batch into a heating and stirring device for heating and stirring, and stirring for 120-180 minutes at 90-180 ℃ to fully homogenize the glass simulation batch;
s3, opening a heating system of the tin bath model to heat the polishing solution in four areas in the model, setting the temperature within the range of 40-120 ℃, and feeding back the temperature of the polishing solution by a bottom temperature sensor;
s4, after the four areas of the tin bath model reach the set time and temperature, simultaneously opening an edge roller, a drawing system and an image acquisition system in the tin bath model, and setting parameters of the edge roller and the drawing system;
s5, opening a valve of the heating and stirring device and an image acquisition system, simulating glass liquid to flow into the tin bath model, starting the polishing, flattening, thinning and forming processes, recording the simulation process by the image acquisition system, and leading out the formed glass belt by a drawing system;
and S6, measuring the thickness and the width of the formed glass ribbon, recording process parameters and other experimental data.
2. The physical simulation method of a tin bath for a float glass according to claim 1, wherein: and (S1) calculating the viscosity of the simulation liquid in the corresponding temperature section according to the viscosity-temperature curve of the float glass and a similar theory, and then weighing a certain proportion of the glass simulation batch according to the viscosity-temperature curve of the float glass, namely the viscosity-temperature curve of the glass.
3. The physical simulation method of a tin bath for a float glass according to claim 1, wherein: the heating area of the tin bath model in the step S3 is divided into four areas of polishing, flattening, thinning and forming, a temperature sensor is inserted into the polishing solution from the bottom of the model, and when the temperature of the polishing solution reaches a set temperature, a heating system stops heating; when the temperature of the polishing solution is lower than the set temperature, the heating system heats the polishing solution.
4. The physical simulation method of a tin bath for a float glass according to claim 1, wherein: the temperature sensor in the tin bath model of the step S3 adopts contact temperature measurement, the temperature control precision is +/-0.1 ℃, baffles are arranged among different heating areas to realize the temperature gradient of the different areas, and the accuracy of the temperature of each heating area is effectively ensured.
5. The physical simulation method of a tin bath for a float glass according to claim 1, wherein: the number of pairs of the edge rollers in the step S4 is 3-6, the swing angle of the edge rollers is 0-10 degrees, and the speed of the drawing system is 10-36 m/h.
6. A physical simulation method of a tin bath suitable for a float glass according to any one of claims 1 to 5, wherein: the step S5 is that the image acquisition system records the simulation process, namely records the polishing, flattening, thinning and forming processes of the simulation liquid in the tin bath model by adopting a video image mode, and conveniently and visually analyzes the influence of the simulation liquid with different process viscosities and process parameters on the forming process of the glass ribbon.
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| CN107056021A (en) * | 2017-01-23 | 2017-08-18 | 秦皇岛玻璃工业研究设计院 | A kind of super-thin electronic glass shaping equipment and forming method |
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| CN211374583U (en) * | 2019-12-25 | 2020-08-28 | 中建材蚌埠玻璃工业设计研究院有限公司 | Float glass tin bath physical simulation device |
| CN211688809U (en) * | 2019-11-27 | 2020-10-16 | 海南中航特玻科技有限公司 | Glass liquid steady flow control mechanism of molten tin bath inlet suitable for special glass float process |
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2021
- 2021-08-14 CN CN202110933467.1A patent/CN113532695B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1300612A (en) * | 1969-01-04 | 1972-12-20 | Erste Deutche Floatglas G M B | Improvements in the float glass process for the manufacture of glass |
| US3692508A (en) * | 1969-07-01 | 1972-09-19 | Boussois Souchon Neuvesel Sa | Process for the manufacture of flat glass |
| US20110195638A1 (en) * | 2008-10-17 | 2011-08-11 | Kenichi Sasaki | Method for producing glass substrate and method for producing magnetic recording medium |
| CN102503088A (en) * | 2011-10-19 | 2012-06-20 | 中国建材国际工程集团有限公司 | On-line heating device and method for tin liquor backflow in float glass tin bath |
| CN107056021A (en) * | 2017-01-23 | 2017-08-18 | 秦皇岛玻璃工业研究设计院 | A kind of super-thin electronic glass shaping equipment and forming method |
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| CN111170618A (en) * | 2019-11-27 | 2020-05-19 | 海南中航特玻科技有限公司 | Glass liquid steady flow control mechanism of molten tin bath inlet suitable for special glass float process |
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