CN107562085B - Method for controlling glass plate toughening technological process according to energy consumption - Google Patents
Method for controlling glass plate toughening technological process according to energy consumption Download PDFInfo
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- CN107562085B CN107562085B CN201710667250.4A CN201710667250A CN107562085B CN 107562085 B CN107562085 B CN 107562085B CN 201710667250 A CN201710667250 A CN 201710667250A CN 107562085 B CN107562085 B CN 107562085B
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Abstract
A method for controlling the tempering process of a glass plate according to energy consumption is characterized in that after the glass plate enters a heating furnace, a monitoring unit monitors the energy consumed by a heating element of the heating furnace in real time and transmits the energy into a control unit to be compared with N set thresholds, and when the energy consumed by the heating element of the heating furnace is larger than or equal to one of the set thresholds, the control unit sends an instruction to a driving mechanism to execute a heating furnace adjusting instruction corresponding to the threshold. The invention changes the traditional control method taking time as the basis, monitors the energy consumed by the heating element of the heating furnace in real time through the monitoring unit, and can more scientifically and accurately control the swinging speed of the glass plate in the heating process, thereby ensuring that the glass plate swings back and forth at a more stable and constant acceleration.
Description
Technical Field
The invention relates to a glass production process, in particular to a method for controlling a glass plate tempering process according to energy consumption.
Background
In the tempering treatment process of the glass sheet, first, the glass sheet is heated to a softening temperature (for example, 600 to 700 ℃) in a heating furnace, and then, rapidly taken out of the furnace into a tempering section, and the tempering treatment is completed by rapid cooling. Wherein, for a single chamber furnace, the glass plate needs to continuously swing back and forth in the furnace in the heating process; when a glass plate is just put into a furnace, in order to avoid the glass plate from rubbing with a ceramic roller way to scratch the surface, the swinging speed of the glass plate is the slowest, the glass plate is gradually softened along with the rise of the temperature of the glass plate, and the swinging speed of the glass plate needs to be continuously improved in order to avoid the roll mark formation and the poor flatness of the glass plate. The traditional control mode is that the heating process of the glass plate is divided into a plurality of time periods according to time, and the glass plate is swung back and forth at a certain speed in one time period and enters the next stage to continue swinging back and forth after a set time. In the actual production process, the division of the time nodes of the stages and the selection of the swing speed of each stage need to be determined by depending on operation experience, and the speed adjustment according to the time is easy to cause unstable glass quality for different glasses.
Convection heating is a very important form of heating for glass sheets, and the principle is to blow hot air to the glass sheets by means of a high-temperature blower to heat the glass sheets. For a convection type glass plate heating furnace, when a glass plate just enters the furnace, the heat conduction speed of a ceramic roller way to the glass plate is the fastest, in order to avoid the phenomenon that the edge part of the glass plate is warped upwards, a high-temperature fan needs to operate at a higher rotating speed, along with the rise of the temperature of the glass plate, the heat conduction speed of the ceramic roller way to the glass plate is reduced, the glass plate is gradually softened, at the moment, in order to avoid the phenomenon that the air pressure is too large, the flatness of the glass plate in a softened state is poor, and the rotating speed or the power of the high. As shown in fig. 1, in the prior art, the operation process of the high temperature fan is divided into several stages according to the heating time of the glass plate, and the high temperature fan operates at a certain rotation speed in each stage. In the actual production process, the determination of the time node of each stage and the selection of the rotating speed of the high-temperature fan of each stage need to be manually determined according to the type and the thickness of the glass plate by relying on the operation experience. This control method has the following technical drawbacks: 1. the operation process of the high-temperature fan cannot be accurately controlled, and the glass plate is easy to warp and deform in the heating process, so that the quality of a finished product of toughened glass is influenced; 2. the transition depends on the experience and quality of operators, which not only increases the labor cost, but also is not beneficial to the improvement of the qualified rate of products and the long-term stability of the quality.
Disclosure of Invention
The invention aims to solve the problem that the glass quality is unstable easily when the swing speed of a glass plate and the rotating speed of a high-temperature fan are adjusted according to time periods in the prior art, and provides a method for controlling the glass plate tempering process according to energy consumption.
In order to solve the technical problems, the invention adopts the technical scheme that: a method for controlling the toughening process of glass plate based on energy consumption includes such steps as defining the maximum threshold Q of energy consumed by heating element when the glass plate to be heated in each furnace is heated to discharge temperaturemaxSelecting N different thresholds, wherein the N thresholds are not more than the maximum threshold QmaxSetting each threshold value to correspond to a heating parameter adjusting instruction; after the glass plate enters the heating furnace, the monitoring unit monitors the energy consumed by the heating element of the heating furnace in real time, and transmits the energy into the control unit to be compared with the set N thresholds, and when the glass plate is heatedWhen the energy consumed by the heating element of the furnace is more than or equal to one of the set thresholds, the control unit sends an instruction to the driving mechanism to execute a heating parameter adjusting instruction corresponding to the threshold.
The control unit is a PLC or a PC.
The maximum threshold value Qmax= K1·q0，q0= cm △ t, where c is the specific heat capacity of the glass sheet, m is the total mass of glass sheet to be heated, △ t is the temperature difference between the glass sheet entry temperature and the glass sheet exit temperature, K1The value range of the correction coefficient is as follows: k is more than 1 and less than or equal to 1.3.
The heating parameter adjusting instruction is to adjust the swing speed of the glass plate and take N different threshold values Q1、Q2、...QNAnd said Q is1、Q2、...QNAre not more than QmaxSetting the xth threshold Q of the N different thresholdsxCorresponding to the swing speed of the glass plate as Vx(ii) a After the glass plate is sent into the heating furnace, the monitoring unit monitors the energy consumed by the heating element of the heating furnace in real time and transmits the energy to the control unit and a set threshold QxComparing, when the energy consumed by the heating element of the heating furnace is larger than or equal to the threshold value QxAnd when the glass plate swings, the control unit sends an instruction to the driving mechanism to adjust the swing speed of the glass plate to Vx.
Said Q1、Q2、...QNSequentially increase in size, and Q1Is Qmax0.4-0.6 times of that of (C), QNIs Qmax0.9-1 times of (A), Q2、...QN-1At not more than QmaxIs selected within the range of (1). Generally, the larger the value of N, the better the value of N, and the corresponding swing speed V of the glass plate1To a progressive increase of Vx 400mm/s Vx 1200mm/s, the oscillation speed is selected in relation to the thickness and type of glass sheet, which is a well-known operating speed in the art and therefore not described in detail herein.
The threshold value QxAnd the corresponding glass plate swinging speed Vx is manually input into the control unit through a human-computer interface.
Said is addedThe thermal parameter adjusting instruction is to adjust the rotating speed of the high-temperature fan of the glass plate and take N different threshold values Q1、Q2、...QNAnd said Q is1、Q2、...QNAre not more than QmaxSetting the xth threshold Q of the N different thresholdsxCorresponding to the rotating speed of the high-temperature fan being Sx(ii) a After the glass plate is sent into the heating furnace, the monitoring unit monitors the energy consumed by the heating element of the heating furnace in real time and transmits the energy to the control unit and a set threshold QxComparing, when the energy consumed by the heating element of the heating furnace is larger than or equal to the threshold value QxAnd when the high-temperature fan is started, the control unit sends an instruction to the driving mechanism to adjust the rotating speed of the high-temperature fan to Sx.
Said Q1、Q2、...QNSequentially increase in size, and Q1Is Qmax0.4-0.6 times of that of (C), QNIs Qmax0.9-1 times of (A), Q2、...QN-1At not more than QmaxIs selected within the range of (1). Generally, the larger the value of N, the better the N value is, and the rotating speed of the corresponding high-temperature fan is S1As far as Sx, 10r/min Sx is less than or equal to 3000 r/min, the rotation speed is selected according to the thickness and type of the glass plate, which is the operation speed known in the art and is common knowledge, and therefore, the detailed description is omitted here.
The threshold value QxAnd the corresponding glass plate swinging speed Sx is manually input into the control unit through a human-computer interface.
The energy is electric energy consumed by a heating element of the heating furnace, and the monitoring unit is an electric energy meter, an electric energy module or an electric energy sensor.
The energy is electric energy consumed by a heating element of the heating furnace, and the monitoring unit is a power meter, a power module or a power sensor; the instantaneous power of the heating element is monitored in real time by a monitoring unit, and the instantaneous power is integrated with respect to time to obtain the electric energy consumed by the heating element.
The energy is electric energy consumed by a heating element of the heating furnace, and the monitoring unit is a combination of a voltmeter and an ammeter, or a combination of a voltage module and a current module, or a combination of a voltage sensor and a current sensor; the instantaneous voltage and the instantaneous current of the heating element are monitored in real time by the monitoring unit, and the product of the instantaneous voltage and the instantaneous current is integrated with respect to time to obtain the electric energy consumed by the heating element.
The energy is the electric energy consumed by the heating furnace, the monitoring unit is a PLC (programmable logic controller), the instantaneous opening number of the heating elements is monitored in real time through the PLC, the instantaneous power of the heating elements of the whole heating furnace is obtained according to the rated power of a single heating element, and the electric energy consumed by the heating elements is obtained by integrating the instantaneous power with respect to time.
The energy is fuel gas chemical energy consumed by a heating element of the heating furnace, and the monitoring unit is a fuel gas meter.
The invention has the beneficial effects that:
1. the glass plate heating device breaks through the traditional control method based on time in the technical field, after the glass plate enters the heating furnace, the monitoring unit monitors the energy consumed by the heating element of the heating furnace in real time (electric energy consumed by the electric heating furnace and chemical energy consumed by the gas heating furnace), and can more scientifically and accurately control the swing speed of the glass plate in the heating process, so that the glass plate is more stable, the scratch problem of the surface of the glass plate is effectively avoided, and the finished product quality of toughened glass is improved; through controlling the rotational speed of high temperature fan, can improve the effect of glass board convection heating, further improve glass board roughness and tempering quality.
2. The setting of the swing speed parameter of the glass plate and the parameter of the high-temperature fan in the heating process does not depend on the experience and quality of operators any more, so that the labor cost is reduced, the equipment is more intelligent, the operation is simpler and more convenient, and the production process and the product quality are stable.
Drawings
FIG. 1 is a graph showing the change in the energy consumed by the heating element when the oscillation speed of the glass sheet is controlled in example 1 of the present invention.
Fig. 2 is a graph showing a variation of energy consumed by a heating element when controlling a rotational speed of a high temperature fan in embodiment 2 of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings, in which:
example 1
As shown in FIG. 1, the control process of the heating control method of the present invention is as follows, taking the control of the swing speed of the glass sheet as an example:
first, a maximum threshold Q is determinedmax，Qmax= K1·q0，q0=cm△t，Wherein c is the specific heat capacity of the glass plate, m is the total mass of the glass plate to be heated, △ t is the temperature difference between the glass plate feeding temperature and the glass plate discharging temperature, the discharging temperature refers to the temperature set when the glass plate is heated to be softened in the heating furnace in the glass plate toughening treatment process and meets the discharging condition, generally, the discharging temperature ranges from 650 ℃ to 700 ℃, the discharging temperature can be set according to the type (such as low-radiation coated glass and white glass) and the thickness of the glass plate to be heated, and K is the discharging temperature1The correction coefficient is in a value range of 1 < K1Less than or equal to 1.3. It should be noted that: k1The value of (a) is related to the influence factors such as the heat preservation performance of the heating furnace, the ambient temperature, the utilization rate of electric energy or fuel gas and the like. Middle K of the embodiment1=1.2。
Secondly, at not more than QmaxSelecting five different threshold values in the range of (1), wherein the threshold values are respectively Q1=0.5Qmax、Q2=0.6Qmax、Q3=0.7Qmax、Q4=0.8Qmax、Q5=0.9QmaxCorresponding to a glass plate swinging velocity of V1=400mm/s、V2=450mm/s、V3=480mm/s、V4=500mm/s、V5=600mm/s, the operator will Q through the man-machine interface1、Q2、Q3、Q4、Q5And V1、V2、V3、V4、V5Input into the control unit. It should be noted that: the five different thresholds and the corresponding glass plate swing speeds can be automatically calculated and selected by the control unit on the basis of establishing the functional relationship.
Low temperature shape of glass plateAfter the state is sent into the heating furnace, the heat absorption is started, the energy consumed by the heating element is rapidly increased, at the moment, the monitoring unit monitors the energy consumed by the heating element of the heating furnace in real time and transmits the energy to five threshold values set in the control unit for comparison. FIG. 1 is a graph showing the control of the glass sheet oscillation speed according to the variation of the energy consumed by the heating element. When the energy consumed by the heating element is greater than or equal to Q during the rise1While, the swing speed of the glass plate is adjusted to V1(ii) a When the energy consumed by the heating element is greater than or equal to Q during the rise2While, the swing speed of the glass plate is adjusted to V2(ii) a When the energy consumed by the heating element is greater than or equal to Q during the rise3While, the swing speed of the glass plate is adjusted to V3(ii) a When the energy consumed by the heating element is greater than or equal to Q during the rise4While, the swing speed of the glass plate is adjusted to V4(ii) a When the energy consumed by the heating element is greater than or equal to Q during the rise5While, the swing speed of the glass plate is adjusted to V5。
When the heating element of the heating furnace in this embodiment is an electric heating element, the energy is electric energy consumed by the heating element of the heating furnace, and the monitoring unit is an electric energy meter, an electric energy module or an electric energy sensor, and can directly read the electric energy consumed by the heating element. Of course, the monitoring unit in this embodiment may be a power meter, a power module or a power sensor, and the instantaneous power of the heating element is monitored in real time by the monitoring unit, and the instantaneous power is integrated with respect to time to obtain the electric energy consumed by the heating element. In addition, the monitoring unit in this embodiment may also be a combination of a voltmeter and an ammeter, or a combination of a voltage module and a current module, or a combination of a voltage sensor and a current sensor; the instantaneous voltage and the instantaneous current of the heating element are monitored in real time by the monitoring unit, and the product of the instantaneous voltage and the instantaneous current is integrated with respect to time to obtain the electric energy consumed by the heating element.
When the heating element of the heating furnace of the embodiment adopts a fuel gas heating element, the energy is chemical energy consumed by the heating element of the heating furnace, and the monitoring unit is a fuel gas meter; the product of the heat value of the fuel gas and the consumed fuel gas amount is the energy consumed by the heating element.
Example 2
As shown in fig. 2, taking the control of the rotation speed of the high temperature fan as an example, the control process of the heating control method of the present invention is as follows:
first, a maximum threshold Q is determinedmax，Qmax= K1·q0，q0=cm△t，Wherein c is the specific heat capacity of the glass plate, m is the total mass of the glass plate to be heated, △ t is the temperature difference between the glass plate feeding temperature and the glass plate discharging temperature, the discharging temperature refers to the temperature set when the glass plate is heated to be softened in the heating furnace in the glass plate toughening treatment process and meets the discharging condition, generally, the discharging temperature ranges from 650 ℃ to 700 ℃, the discharging temperature can be set according to the type (such as low-radiation coated glass and white glass) and the thickness of the glass plate to be heated, and K is the discharging temperature1The correction coefficient is in a value range of 1 < K1Less than or equal to 1.3. It should be noted that: k1The value of (a) is related to the influence factors such as the heat preservation performance of the heating furnace, the ambient temperature, the utilization rate of electric energy or fuel gas and the like. Middle K of the embodiment1=1.2。
Secondly, at not more than QmaxSelecting five different threshold values in the range of (1), wherein the threshold values are respectively Q1=0.5Qmax、Q2=0.6Qmax、Q3=0.7Qmax、Q4=0.8Qmax、Q5=0.9QmaxCorresponding speeds are respectively S1=1000r/min、S2=750 r/min、 S3=400 r/min、 S4=300 r/min、 S5=100r/min, the operating worker sends Q through a man-machine interface1、Q2、Q3、Q4、Q5And S1、S2、S3、S4、S5Input into the control unit. It should be noted that: the five different thresholds and the corresponding glass plate swing speeds can be automatically calculated and selected by the control unit on the basis of establishing the functional relationship.
After the glass plate is sent into the heating furnace in a low-temperature state, the glass plate begins to absorb heatThe energy consumed by the heating element is rapidly increased, and at the moment, the monitoring unit monitors the energy consumed by the heating element of the heating furnace in real time and transmits the energy to five thresholds set in the control unit for comparison. Fig. 1 is a graph illustrating control of a rotation speed of a high temperature fan according to variation of energy consumed by a heating element. When the energy consumed by the heating element is greater than or equal to Q during the rise1In the meantime, the rotation speed of the high-temperature fan is adjusted to S1When the energy consumed by the heating element is greater than or equal to Q during the rise2In the meantime, the rotation speed of the high-temperature fan is adjusted to S2When the energy consumed by the heating element is greater than or equal to Q during the rise3In the meantime, the rotation speed of the high-temperature fan is adjusted to S3At a time T3, when the energy consumed by the heating element is greater than or equal to Q during the ramp-up4In the meantime, the rotation speed of the high-temperature fan is adjusted to S4When the energy consumed by the heating element is greater than or equal to Q during the rise5In the meantime, the rotation speed of the high-temperature fan is adjusted to S5。
It should be noted that: rotation speed S of the high temperature fan in this embodiment1To S5The reduction is merely an example, but the rotation speed of the high temperature fan is not limited to the above embodiment, and the rotation speed of the high temperature fan may be set to be different from the above embodiment in order to meet the heating requirements of different kinds of glass plates.
The heating element of the heating furnace of this embodiment may be an electric heating element or a gas heating element, and the calculation process of the monitoring unit and the energy consumed by the heating element is the same as that of embodiment 1, and is not described herein again.
The technical solutions and embodiments of the present invention are not limited, and the same solutions or effects as those of the technical solutions and embodiments of the present invention are within the scope of the present invention.
Claims (12)
1. A method for controlling the glass plate tempering process according to energy consumption is characterized in that: defining the energy consumed by the heating elements when the glass plate to be heated in each furnace is heated to the tapping temperatureIs the maximum threshold value QmaxSelecting N different thresholds, wherein the N thresholds are not more than the maximum threshold QmaxSetting each threshold value to correspond to a heating parameter adjusting instruction, wherein the heating parameter adjusting instruction is the swing speed of a glass plate or the rotating speed of a high-temperature fan; after the glass plate enters the heating furnace, the monitoring unit monitors the energy consumed by the heating element of the heating furnace in real time and transmits the energy into the control unit to be compared with the set N thresholds, when the energy consumed by the heating element of the heating furnace is more than or equal to one of the set thresholds, the control unit sends an instruction to the driving mechanism to execute the swing speed of the glass plate or the rotating speed of the high-temperature fan corresponding to the threshold,
the maximum threshold value Qmax= K1·q0，q0= cm △ t, where c is the specific heat capacity of the glass sheet, m is the total mass of glass sheet to be heated, △ t is the temperature difference between the glass sheet entry temperature and the glass sheet exit temperature, K1The value range of the correction coefficient is as follows: k is more than 1 and less than or equal to 1.3,
when the heating parameter adjusting instruction is used for adjusting the swinging speed of the glass plate, N different threshold values Q are selected1、Q2、...QNAnd said Q is1、Q2、...QNAre not more than QmaxSetting the xth threshold Q of the N different thresholdsxCorresponding to the swing speed of the glass plate as Vx(ii) a After the glass plate is sent into the heating furnace, the monitoring unit monitors the energy consumed by the heating element of the heating furnace in real time and transmits the energy to the control unit and a set threshold QxComparing, when the energy consumed by the heating element of the heating furnace is larger than or equal to the threshold value QxWhen the glass plate is in the Vx state, the control unit sends an instruction to the driving mechanism to adjust the swing speed of the glass plate to be Vx, and Q is1、Q2、...QNSequentially increase in size, and Q1Is Qmax0.4-0.6 times of that of (C), QNIs Qmax0.9-1 times of the above-mentioned threshold value, the swing speed of the correspondent glass plate is progressively increased from V1 to Vx, Vx is greater than or equal to 400mm/s and less than or equal to 1200mm/s, and the described threshold value QxThe corresponding glass plate swinging speed Vx is manually input into the control unit through a human-computer interface;
when the heating parameter adjusting instruction is to adjust the rotating speed of the high-temperature fan of the glass plate, N different thresholds Q are selected1、Q2、...QNAnd said Q is1、Q2、...QNAre not more than QmaxSetting the xth threshold Q of the N different thresholdsxCorresponding to the rotating speed of the high-temperature fan being Sx(ii) a After the glass plate is sent into the heating furnace, the monitoring unit monitors the energy consumed by the heating element of the heating furnace in real time and transmits the energy to the control unit and a set threshold QxComparing, when the energy consumed by the heating element of the heating furnace is larger than or equal to the threshold value QxWhen the high-temperature fan is started, the control unit sends an instruction to the driving mechanism to adjust the rotating speed of the high-temperature fan to Sx, and Q is1、Q2、...QNSequentially increase in size, and Q1Is Qmax0.4-0.6 times of that of (C), QNIs Qmax0.9-1 times of the speed, the corresponding rotation speed S1 to Sx of the high-temperature fan is gradually increased, Sx is more than or equal to 10r/min and less than or equal to 3000 r/min, and the threshold value QxAnd the corresponding glass plate swinging speed Sx is manually input into the control unit through a human-computer interface.
2. The method for controlling a process of tempering a glass sheet according to energy consumption as claimed in claim 1, wherein: the energy is electric energy consumed by a heating element of the heating furnace, and the monitoring unit is an electric energy meter.
3. The method for controlling a process of tempering a glass sheet according to energy consumption as claimed in claim 1, wherein: the energy is electric energy consumed by a heating element of the heating furnace, and the monitoring unit is an electric energy module.
4. The method for controlling a process of tempering a glass sheet according to energy consumption as claimed in claim 1, wherein: the energy is electric energy consumed by a heating element of the heating furnace, and the monitoring unit is an electric energy sensor.
5. The method for controlling a process of tempering a glass sheet according to energy consumption as claimed in claim 1, wherein: the energy is electric energy consumed by a heating element of the heating furnace, and the monitoring unit is a power meter; the instantaneous power of the heating element is monitored in real time by a monitoring unit, and the instantaneous power is integrated with respect to time to obtain the electric energy consumed by the heating element.
6. The method for controlling a process of tempering a glass sheet according to energy consumption as claimed in claim 1, wherein: the energy is electric energy consumed by a heating element of the heating furnace, and the monitoring unit is a power module; the instantaneous power of the heating element is monitored in real time by a monitoring unit, and the instantaneous power is integrated with respect to time to obtain the electric energy consumed by the heating element.
7. The method for controlling a process of tempering a glass sheet according to energy consumption as claimed in claim 1, wherein: the energy is electric energy consumed by a heating element of the heating furnace, and the monitoring unit is a power sensor; the instantaneous power of the heating element is monitored in real time by a monitoring unit, and the instantaneous power is integrated with respect to time to obtain the electric energy consumed by the heating element.
8. The method for controlling a process of tempering a glass sheet according to energy consumption as claimed in claim 1, wherein: the energy is the electric energy consumed by the heating element of the heating furnace, the monitoring unit is a combination of a voltmeter and an ammeter, the instantaneous voltage and the instantaneous current of the heating element are monitored in real time through the monitoring unit, and the product of the instantaneous voltage and the instantaneous current is subjected to time-dependent integration to obtain the electric energy consumed by the heating element.
9. The method for controlling a process of tempering a glass sheet according to energy consumption as claimed in claim 1, wherein: the energy is electric energy consumed by a heating element of the heating furnace, and the monitoring unit is a combination of a voltage module and a current module; the instantaneous voltage and the instantaneous current of the heating element are monitored in real time by the monitoring unit, and the product of the instantaneous voltage and the instantaneous current is integrated with respect to time to obtain the electric energy consumed by the heating element.
10. The method for controlling a process of tempering a glass sheet according to energy consumption as claimed in claim 1, wherein: the energy is electric energy consumed by a heating element of the heating furnace, and the monitoring unit is a combination of a voltage sensor and a current sensor; the instantaneous voltage and the instantaneous current of the heating element are monitored in real time by the monitoring unit, and the product of the instantaneous voltage and the instantaneous current is integrated with respect to time to obtain the electric energy consumed by the heating element.
11. The method for controlling a process of tempering a glass sheet according to energy consumption as claimed in claim 1, wherein: the energy is the electric energy consumed by the heating furnace, the monitoring unit is a PLC (programmable logic controller), the instantaneous opening number of the heating elements is monitored in real time through the PLC, the instantaneous power of the heating elements of the whole heating furnace is obtained according to the rated power of a single heating element, and the electric energy consumed by the heating elements is obtained by integrating the instantaneous power with respect to time.
12. The method for controlling a process of tempering a glass sheet according to energy consumption as claimed in claim 1, wherein: the energy is fuel gas chemical energy consumed by a heating element of the heating furnace, and the monitoring unit is a fuel gas meter.
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| KR100326173B1 (en) * | 1999-12-30 | 2002-02-27 | 윤종용 | Control method of heat treatment in fabrication process for high purity silica glass |
| FI126760B (en) * | 2010-01-11 | 2017-05-15 | Glaston Services Ltd Oy | Method and apparatus for supporting and heating glass sheets with a hot gas pad |
| WO2011122678A1 (en) * | 2010-03-30 | 2011-10-06 | 旭硝子株式会社 | Method for strengthening glass sheet, and device thereof |
| CN202148251U (en) * | 2011-07-21 | 2012-02-22 | 杭州精工机械有限公司 | Heating furnace adopting numerical control convective mixing radiation heating mode |
| CN202472455U (en) * | 2012-03-02 | 2012-10-03 | 洛阳北方玻璃技术股份有限公司 | Device for controlling heating temperature of toughened glass |
| CN104773949A (en) * | 2015-04-28 | 2015-07-15 | 洛阳北方玻璃技术股份有限公司 | Method for controlling glass to be heated in glass toughening process |
| CN204588984U (en) * | 2015-05-06 | 2015-08-26 | 安徽亚盛技术开发有限责任公司 | A kind of horizontal glass annealing furnace film releasing section |
| CN106066627A (en) * | 2016-06-01 | 2016-11-02 | 安瑞装甲材料（芜湖）科技有限公司 | A kind of safety glass production control system |
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