Temperature control method and system for balancing thermal stress and working method
By setting monitoring points and temperature control ranges on ultra-thin glass and optimizing the temperature control method based on thickness and linear deformation response parameters, the problems of stress monitoring and homogenization of ultra-thin glass are solved, stress homogenization is achieved, and the risk of panel explosion is reduced.
Patent Information
- Application Number
- CN202510860705.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-25
- Publication Date
- 2025-09-16
AI Technical Summary
Existing technologies make it difficult to accurately monitor and homogenize the internal stress of ultra-thin glass, resulting in problems such as ultra-thin glass easily exploding during annealing and breaking during cutting.
Monitoring points are set on the horizontal surface of the ultra-thin glass, and temperature control intervals are divided. The temperature control parameters are selected by monitoring the thickness and linear deformation response parameters. Temperature control treatment is performed in the gradient temperature control room to optimize the temperature control system to achieve stress uniformity.
It significantly reduces the risk of ultra-thin glass exploding during annealing and cutting, improves the uniformity of stress distribution inside the glass, and reduces the difficulty and complexity of process debugging.
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Abstract
Description
Technical Field
[0001] The present application relates to the technical field of float glass processing, and in particular to a temperature control method, system, and working method for balancing thermal stress. Background Art
[0002] The float glass production process encompasses three core steps: melting, forming, and annealing. The melting process transforms the batch materials into a uniform, consistent glass melt through high-temperature heating, meeting the physical and chemical requirements of the forming process. The forming process shapes the glass melt into a glass ribbon with specific specifications. The core objective of the annealing process is to eliminate or reduce thermal stress within the glass to a safe threshold, thereby preventing sheet explosion during annealing, cracking and loss during the cutting process, and defects in the finished product caused by residual stress during downstream processing and use.
[0003] During the annealing stage, thickness differences, uneven heat dissipation, and the transverse temperature distribution of the annealing lehr lead to inconsistent cooling rates at the edges and center of the glass sheet, resulting in a stress gradient across the sheet width. Specifically, excessive compressive stress at the edges can induce transverse cracking, while insufficient compressive stress can easily lead to longitudinal cracking. Both of these factors stem from the uneven stress distribution across the sheet width. Furthermore, this uneven stress can cause the glass to exhibit position-specific resistance to external forces during cutting, which is inconsistent with the fixed-pressure cutter action, resulting in the glass failing to break along the intended path or causing the fracture path to deviate.
[0004] To address this stress control challenge, existing solutions rely on stress monitors to provide feedback and adjust the annealing curve. However, their effectiveness is limited by glass thickness. For ultra-thin products with a thickness of ≤1.1mm, such as electronic glass, traditional stress monitoring techniques based on polarized light interferometry suffer from weak optical path difference signals, microscopic stress distribution, and instrument resolution bottlenecks. Consequently, existing technologies struggle to accurately measure and homogenize internal stress in ultra-thin glass. Summary of the Invention
[0005] In view of this, the purpose of this application is to provide a temperature control method, system and working method for balancing thermal stress, which is used to solve the problem that the existing technology is difficult to accurately monitor the internal stress of ultra-thin glass and homogenize the stress.
[0006] To achieve the above technical objectives, the present application provides a temperature control method for balancing thermal stress, comprising the following steps:
[0007] At least three monitoring sites are set on the horizontal surface of the formed ultra-thin glass; with the monitoring site as the center, continuous temperature control intervals are divided along the length direction of the horizontal surface of the ultra-thin glass, and each temperature control interval includes at least one monitoring site;
[0008] The thickness and linear deformation response parameters of the monitoring site are monitored. According to the thickness and linear deformation response parameter data obtained from the monitoring, the corresponding temperature control parameters are selected and applied to the temperature control range including the corresponding monitoring site. After the temperature control parameters are set, the ultra-thin glass is temperature controlled.
[0009] Furthermore, when the thickness and linear deformation response parameters measured at the monitoring site meet the following preset conditions, the corresponding temperature control parameters are selected:
[0010] When the thickness satisfies 1.0≤Th≤1.1mm and the linear deformation response parameter is (9~9.4)×10 -6 ℃ -1 When, the temperature control parameter is 160≤T≤170℃;
[0011] When the thickness satisfies 1.1<Th≤1.2mm and the linear deformation response parameter is (9~9.4)×10 -6 ℃ -1 When the temperature control parameter is 170<T≤185℃.
[0012] Furthermore, when the thickness satisfies 1.1≤Th≤1.11mm and the linear deformation response parameter is (9.25~9.35)×10 -6 ℃ -1 When the temperature control parameter is 180≤T≤185℃.
[0013] Furthermore, the monitoring sites include edge areas and center areas of the ultra-thin glass.
[0014] Furthermore, the monitoring sites are arranged linearly or in a matrix.
[0015] Furthermore, the temperature difference between adjacent temperature control zones does not exceed 10°C.
[0016] The present application provides an application of a temperature control method for balancing thermal stress, which is used for annealing ultra-thin glass.
[0017] Furthermore, the thickness of the ultra-thin glass is 1.0~1.2mm.
[0018] The present application provides a temperature control system for optimizing glass quality, which uses a thickness monitoring device, a thermo-induced phase change analysis device, a DCS control system, and a gradient temperature control room to monitor and control the parameters and conditions in the temperature control method according to any one of claims 1 to 6;
[0019] The thickness monitoring device is used to monitor the thickness of ultra-thin glass; the thermally induced phase change analysis device is used to monitor the linear deformation response parameters of ultra-thin glass;
[0020] The DCS control system is used to collect monitoring data obtained by the thickness monitoring device and the thermal phase change analysis device, select the temperature control range and temperature control parameters based on the monitoring results, and adjust the temperature range and temperature parameters of the gradient temperature control room accordingly.
[0021] Step S1: setting at least three monitoring sites on the horizontal surface of the formed ultra-thin glass; dividing the longitudinal direction of the horizontal surface of the ultra-thin glass into continuous temperature control intervals with the monitoring sites as the center, and each temperature control interval includes at least one monitoring site;
[0022] Step S2: using a thermally induced phase change analysis device and a thickness monitoring device to monitor the linear deformation response parameters and thickness of the monitoring site, and feeding back the monitoring results to the DCS control system;
[0023] Step S3: The DCS control system selects corresponding temperature control parameters according to the monitoring results and applies the temperature control parameters to the temperature control interval containing the corresponding monitoring point;
[0024] Step S4: Synchronously configuring the temperature control system of the gradient temperature control room according to the temperature control interval and the selected temperature control parameters, so that the temperature interval and temperature parameters of the gradient temperature control room correspond to the temperature control interval and temperature control parameters;
[0025] Step S5: placing the ultra-thin glass in a gradient temperature control room for temperature control treatment.
[0026] In summary, the present application provides a temperature control method for balancing thermal stress, by setting a monitoring site on the horizontal surface of ultra-thin glass, and dividing the continuous temperature control interval along the length direction of the horizontal surface of ultra-thin glass with the monitoring site as the center; monitoring the thickness and linear deformation response parameters of the monitoring site, selecting the corresponding temperature control parameters based on the thickness and linear deformation response parameter data obtained by monitoring, and applying the temperature control parameters to the temperature control interval containing the corresponding monitoring site; after completing the temperature control parameter setting, annealing the ultra-thin glass. The temperature control method proposed in the present application captures the stress variation law along the length or width direction of the glass plate by accurately measuring the two core variables of the thickness and linear deformation response parameters of the ultra-thin glass, and constructs a simple and efficient internal stress control strategy, which helps to reduce the internal stress concentration phenomenon of ultra-thin glass. In actual application, the method only needs to obtain the target parameters through conventional measurement means, and then quickly call the adapted temperature control parameters according to the preset control strategy, which significantly reduces the difficulty of process debugging and the complexity of calculation.
[0027] Compared with the prior art, the temperature control method provided by the present invention reduces redundant monitoring links and dependence on complex algorithms, and also optimizes the internal stress of ultra-thin glass. DETAILED DESCRIPTION
[0028] The following will be a clear and complete description of the technical solutions of the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection requested by this application.
[0029] The sources of all raw materials in the present invention are not particularly limited and can be purchased on the market or prepared according to conventional methods known to those skilled in the art.
[0030] The present invention provides a method for balancing thermal stress and temperature control, comprising the following steps:
[0031] At least three monitoring sites are set on the horizontal surface of the formed ultra-thin glass; with the monitoring site as the center, continuous temperature control intervals are divided along the length direction of the horizontal surface of the ultra-thin glass, and each temperature control interval includes at least one monitoring site;
[0032] The thickness and linear deformation response parameters of the monitoring site are monitored. According to the thickness and linear deformation response parameter data obtained from the monitoring, the corresponding temperature control parameters are selected and applied to the temperature control range including the corresponding monitoring site. After the temperature control parameters are set, the ultra-thin glass is temperature controlled.
[0033] It should be noted that by monitoring the linear deformation response parameters and thickness of the ultra-thin glass plate, the internal stress distribution of the ultra-thin glass plate can be indirectly characterized. Combined with the later temperature control parameters of the ultra-thin glass plate, the distribution law of the linear deformation response parameters, thickness and temperature control parameters can be obtained. Based on the above correspondence, by adjusting the temperature control parameters and temperature control range, the internal stress concentration phenomenon of the ultra-thin glass can be effectively suppressed, the uniformity of the internal stress distribution of the ultra-thin glass can be improved, and the risk of plate explosion during the cutting process can be significantly reduced.
[0034] In some embodiments, when the thickness and linear deformation response parameters measured at the monitoring site meet the following preset conditions, the corresponding temperature control parameters are selected:
[0035] When the thickness satisfies 1.0≤Th≤1.1mm and the linear deformation response parameter is (9~9.4)×10 -6 ℃ -1 When, the temperature control parameter is 160≤T≤170℃;
[0036] When the thickness satisfies 1.1<Th≤1.2mm and the linear deformation response parameter is (9~9.4)×10 -6 ℃ -1 When the temperature control parameter is 170<T≤185℃.
[0037] It should be noted that for ultra-thin glass sheets, especially when the linear deformation response parameter is between (9~9.4)×10 -6 ℃ -1 Within this range, the regulation of temperature control parameters is mainly affected by the thickness of the glass plate. Therefore, within this linear deformation response parameter range, only the thickness of the glass plate needs to be considered and the thickness of the glass plate can be regulated according to the thickness gradient.
[0038] In some embodiments, when the thickness satisfies 1.1≤Th≤1.11mm and the linear deformation response parameter is (9.25~9.35)×10 -6 ℃ -1 When the temperature control parameter is 180≤T≤185℃.
[0039] It should be noted that if more precise control of the internal stress of ultra-thin glass is required, the thickness and linear deformation response parameters can be combined for further control.
[0040] In some embodiments, the monitoring site includes an edge region and a center region of the ultra-thin glass.
[0041] It should be noted that the edges of ultra-thin glass are high-risk areas where stress concentration occurs, while the center reflects overall stress uniformity. By covering these two areas, dual monitoring of the high-stress edge areas and the internal reference area can be achieved, preventing cracks caused by localized stress runaway.
[0042] In some embodiments, the monitoring sites are arranged linearly or in a matrix.
[0043] It should be noted that linear arrangements (such as horizontal or vertical distribution) are suitable for strip-shaped or rectangular glass substrates, capturing stress gradients along their length or width. Matrix arrangements (such as grid-like distribution) are suitable for large glass surfaces (such as photovoltaic substrates) and can achieve full two-dimensional stress monitoring. Therefore, the appropriate arrangement should be selected based on the glass shape, ensuring that the monitoring site layout matches the geometric characteristics of the ultra-thin glass to avoid blind spots.
[0044] In some embodiments, the temperature difference between adjacent temperature control zones does not exceed 10°C.
[0045] It should be noted that during the annealing process of ultra-thin glass, reducing the temperature difference in the temperature control range helps to make the heat transfer inside the ultra-thin glass more uniform, thereby reducing the inconsistency of thermal expansion / contraction rates in different areas, and avoiding the concentration of thermal stress at the interface.
[0046] An embodiment of the present application provides an application of a temperature control method for balancing thermal stress, which is used for annealing ultra-thin glass.
[0047] In some specific embodiments, the thickness of the ultra-thin glass is 1.0-1.2 mm.
[0048] The embodiment of the present application provides a temperature control system for optimizing glass quality, which uses a thickness monitoring device, a thermo-induced phase change analysis device, a DCS control system, and a gradient temperature control room to monitor and regulate the parameters and conditions in the temperature control method;
[0049] The thickness monitoring device is used to monitor the thickness of ultra-thin glass; the thermally induced phase change analysis device is used to monitor the linear deformation response parameters of ultra-thin glass;
[0050] The DCS control system is used to collect monitoring data obtained by the thickness monitoring device and the thermal phase change analysis device, select the temperature control range and temperature control parameters based on the monitoring results, and adjust the temperature range and temperature parameters of the gradient temperature control room accordingly.
[0051] The present invention provides a method for operating a temperature control system for optimizing glass quality, including the following steps:
[0052] Step S1: setting at least three monitoring sites on the horizontal surface of the formed ultra-thin glass; dividing the longitudinal direction of the horizontal surface of the ultra-thin glass into continuous temperature control intervals with the monitoring sites as the center, and each temperature control interval includes at least one monitoring site;
[0053] Step S2: using a thermally induced phase change analysis device and a thickness monitoring device to monitor the linear deformation response parameters and thickness of the monitoring site, and feeding back the monitoring results to the DCS control system;
[0054] Step S3: The DCS control system selects corresponding temperature control parameters according to the monitoring results and applies the temperature control parameters to the temperature control interval containing the corresponding monitoring point;
[0055] Step S4: Synchronously configuring the temperature control system of the gradient temperature control room according to the temperature control interval and the selected temperature control parameters, so that the temperature interval and temperature parameters of the gradient temperature control room correspond to the temperature control interval and temperature control parameters;
[0056] Step S5: placing the ultra-thin glass in a gradient temperature control room for temperature control treatment.
[0057] The applicant further provides the following reference specific embodiments to describe the present invention. It should be noted that these embodiments are merely illustrative and do not limit the present invention in any way.
[0058] Example 1
[0059] This embodiment provides a temperature control method for balancing thermal stress, and the specific steps are as follows:
[0060] In step S1, molten glass is formed on the surface of molten tin to obtain ultra-thin glass. Three monitoring sites are set in the width direction of the horizontal surface of the formed ultra-thin glass. The three monitoring sites are arranged in a straight line and equidistantly along the width direction of the horizontal surface of the ultra-thin glass and sequentially cover the edge and middle area of the ultra-thin glass substrate (such as the left, middle, and right monitoring sites shown in Table 1).
[0061] Step S2: Divide the ultra-thin glass into three continuous and equal-width temperature control zones (corresponding to the left, middle, and right parts shown in Table 1) along the length direction of the horizontal surface with the monitoring site as the center. Each temperature control zone includes the three monitoring sites: the left, middle, and right.
[0062] Step S3: Using a thermally induced phase change analysis device and a thickness monitoring device to monitor the linear deformation response parameters and thickness of the monitoring site, and feeding the monitoring results back to the DCS control system; the DCS control system selects corresponding temperature control parameters according to the control strategy based on the thickness and linear deformation response parameter data obtained from the monitoring, and applies the temperature control parameters to the temperature control range containing the corresponding monitoring site;
[0063] Step S4, synchronously configuring the temperature control system of the gradient temperature control room according to the temperature control parameters set in the temperature control interval, so that the temperature interval and temperature parameters of the gradient temperature control room correspond to the temperature control interval and temperature control parameters;
[0064] Step S5: placing the ultra-thin glass in a gradient temperature control room for temperature control treatment to obtain high-quality ultra-thin glass that is not prone to shattering.
[0065] Among them, the control strategy is as follows: when the thickness is 1.0~1.1mm, the linear deformation response parameter is (9~9.4)×10 -6 ℃ -1 When the thickness is 1.1~1.2mm, the linear deformation response parameter is (9~9.4)×10 -6 ℃ -1 The temperature control parameters are 170-185° C. The specific parameters involved in this embodiment are shown in Table 1.
[0066] Quality Inspection: After temperature control, the ultra-thin glass is cut and processed, and the temperature control effect is evaluated by observing the board for cracking. If cracking does not occur, it is determined that the temperature control method can successfully produce high-quality ultra-thin glass with uniform internal stress.
[0067] Table 1
[0068]
[0069] According to the effect parameters in Table 1, the following conclusions can be drawn:
[0070] (1) Thickness-dominated temperature control parameters
[0071] (1) For ultra-thin glass with a thickness of 1.0~1.1mm, the temperature control parameter range is 160~170℃:
[0072] Comparative experiments comparing Example 5 and Comparative Example 5 reveal that temperature control parameters have a decisive influence on the effectiveness of stress relief in thin glass when the thickness is between 1.0 and 1.1 mm. For Example 5, the thickness at the left monitoring point was 1.087 mm (within the target range), and the cutting results were rated "good" at a temperature control parameter of 165°C (within the 160-170°C range), demonstrating that this temperature control parameter range effectively eliminates internal stress in thin glass. For Comparative Example 5, the thickness at the left monitoring point was consistent with that of Example 5, but the temperature control parameter was only 153°C (below the lower limit of 160°C), resulting in significant residual internal stress in the glass after temperature control treatment, ultimately causing the glass to explode. This result confirms the necessity of a lower limit for temperature control parameters: when the thickness is between 1.0 and 1.1 mm, the temperature control parameter must reach at least 160°C to fully release stress through thermal conduction and molecular relaxation.
[0073] (2) For ultra-thin glass with a thickness of 1.1~1.2mm, the temperature control parameter is 170~185℃:
[0074] Monitoring data from the middle and right sections of Examples 1-4 show that when the thickness increases to 1.1-1.2mm, the required temperature control parameter range shifts upward to 170-185°C. For example, in Example 1, the thickness at the middle monitoring point was 1.103mm, and the temperature control parameter was 182°C; in Example 3, the thickness at the middle monitoring point was 1.100mm, and the temperature control parameter was 185°C. Both examples achieved satisfactory cutting quality. This phenomenon can be attributed to the lower thermal conductivity of thick glass, which requires higher temperature control parameters to achieve a uniform distribution of stress gradients.
[0075] The abnormal data from Comparative Examples 1-4 reveals the constraints of the upper limit of the temperature control parameters: For Comparative Example 1, the thickness at the left monitoring point was 1.135mm (close to the 1.2mm upper limit) and the temperature control parameter was 220°C. For Comparative Example 2, the thickness at the left monitoring point was 1.126mm and the temperature control parameter was 200°C. In both cases, the temperature control parameter exceeded 185°C, leading to overheating stress concentration within the glass and ultimately causing the glass to explode. Combined with the minimum effective temperature control parameter of 173°C (the right side of Example 4), it can be determined that 170-185°C is the safe temperature control parameter range for this thickness range.
[0076] 2. Fine-tuning of the temperature control parameter range by linear deformation response parameters
[0077] When the thickness is in the range (such as 1.1-1.11mm) and the linear deformation response parameter is high, the temperature control parameter range can be further narrowed to 180-185°C. For example, the thickness of the left monitoring point in Example 3 is 1.103mm (belonging to the 1.1-1.11mm sub-range) and the linear deformation response parameter is (lie in High value area), the cutting is good under the condition of temperature control parameter of 185℃ (upper limit of the range), which verifies the necessity of high temperature control parameter for high linear deformation response parameter material. Comparative Example 3 The thickness of the right monitoring point is 1.107mm and the linear deformation response parameter is Although it is within the target parameter range, the temperature control parameter of 190℃ exceeds the upper limit of 185℃, causing the thermal shock stress to exceed the tensile strength of the glass and eventually break.
[0078] In summary, the present invention only needs to monitor the two core parameters, thickness and linear deformation response parameters, in order to balance the internal stress of ultra-thin glass by adjusting the temperature control parameters. Among them, the thickness of ultra-thin glass plays a decisive role in the selection of temperature control parameters: thinner glass (1.0~1.1mm) has a higher surface area to volume ratio and a higher heat conduction efficiency, and the stress concentration phenomenon can be eliminated at lower temperature control parameters; while glass with a thickness of 1.1~1.2mm has an increased thermal resistance, and requires higher temperature control parameters to drive the internal stress to be evenly distributed. At the same time, the linear deformation response parameters (such as the thermal expansion coefficient) and the thickness show a significant coupling effect. Through the coordinated analysis of the two, the refined regulation of the temperature control parameters can be achieved. The specific regulation mechanism is as follows:
[0079] (1) Thickness-dominated basic temperature control range: Glass thickness and temperature control parameters show a segmented positive correlation. When the thickness is in the range of 1.0-1.1 mm, the temperature control temperature difference range is 160-170 ° C. When the thickness increases to 1.1-1.2 mm, the temperature control temperature difference range needs to be increased to 170-185 ° C to meet the stress relief requirements.
[0080] (2) Fine adjustment of linear deformation response parameters: When the thickness range is 1.1~1.11mm, the linear deformation response parameters have a particularly significant effect on the temperature control accuracy. When the temperature is in the high value range, the temperature control temperature difference can be further narrowed to 180~185℃, and thermal stress can be compensated through more precise temperature control parameters.
[0081] The above are only preferred embodiments of the present application and are not intended to limit the present invention. Although the present application has been described in detail with reference to examples, those skilled in the art can still modify the technical solutions described in the aforementioned examples or make equivalent replacements for some of the technical features therein. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.
Claims
1. A temperature control method for balancing thermal stress, characterized in that: The following steps are involved: At least three monitoring sites are set on the horizontal surface of the formed ultra-thin glass; with the monitoring site as the center, continuous temperature control intervals are divided along the length direction of the horizontal surface of the ultra-thin glass, and each temperature control interval includes at least one monitoring site; Monitor the thickness and linear deformation response parameters of the monitoring site, select corresponding temperature control parameters based on the thickness and linear deformation response parameter data obtained from the monitoring, and apply the temperature control parameters to the temperature control range containing the corresponding monitoring site; After completing the temperature control parameter setting, the ultra-thin glass is temperature controlled.
2. The temperature control method for balancing thermal stress according to claim 1, characterized in that: When the thickness and linear deformation response parameters measured at the monitoring site meet the following preset conditions, select the corresponding temperature control parameters: When the thickness satisfies 1.0≤Th≤1.1mm and the linear deformation response parameter is (9~9.4)×10 -6 ℃ -1 When, the temperature control parameter is 160≤T≤170℃; When the thickness satisfies 1.1<Th≤1.2mm and the linear deformation response parameter is (9~9.4)×10 -6 ℃ -1 When the temperature control parameter is 170<T≤185℃.
3. The temperature control method for balancing thermal stress according to claim 2, characterized in that: When the thickness satisfies 1.1≤Th≤1.11mm and the linear deformation response parameter is (9.25~9.35)×10 -6 ℃ -1 When the temperature control parameter is 180≤T≤185℃.
4. The temperature control method for balancing thermal stress according to claim 1, characterized in that: The monitoring sites include the edge area and the center area of the ultra-thin glass.
5. The temperature control method for balancing thermal stress according to claim 1, characterized in that: The monitoring sites are arranged linearly or in a matrix.
6. The temperature control method for balancing thermal stress according to claim 5, characterized in that: The temperature difference between adjacent temperature control zones does not exceed 10°C.
7. An application of the temperature control method for balancing thermal stress according to any one of claims 1 to 6, characterized in that: Used for annealing of ultra-thin glass.
8. The use according to claim 7, characterized in that: The thickness of the ultra-thin glass is 1.0-1.2 mm.
9. A temperature control system for optimizing glass quality, characterized in that: The parameters and conditions in the temperature control method according to any one of claims 1 to 6 are monitored and regulated using a thickness monitoring device, a thermally induced phase change analysis device, a DCS control system, and a gradient temperature control room; The thickness monitoring device is used to monitor the thickness of the ultra-thin glass; the thermally induced phase change analysis device is used to monitor the linear deformation response parameters of the ultra-thin glass; The DCS control system is used to collect monitoring data obtained by the thickness monitoring device and the thermal phase change analysis device, select the temperature control range and temperature control parameters according to the monitoring results, and adjust the temperature range and temperature parameters of the gradient temperature control room accordingly.
10. A method for operating a temperature control system for optimizing glass quality according to claim 9, characterized in that: The following steps are involved: Step S1, setting at least three monitoring sites on the horizontal surface of the formed ultra-thin glass; dividing the longitudinal direction of the horizontal surface of the ultra-thin glass into continuous temperature control intervals with the monitoring sites as the center, and each temperature control interval includes at least one monitoring site; Step S2, using a thermally induced phase change analysis device and a thickness monitoring device to monitor the linear deformation response parameters and thickness of the monitoring site, and feeding back the monitoring results to the DCS control system; Step S3, the DCS control system selects corresponding temperature control parameters according to the monitoring results, and applies the temperature control parameters to the temperature control interval containing the corresponding monitoring point; Step S4: Synchronously configuring the temperature control system of the gradient temperature control room according to the temperature control interval and the selected temperature control parameters, so that the temperature interval and temperature parameters of the gradient temperature control room correspond to the temperature control interval and the temperature control parameters; Step S5: placing the ultra-thin glass in the gradient temperature control room for temperature control treatment.