CN114594127A - Testing device for long-term and short-term resistance of heat-resistant glass and testing method using testing device - Google Patents
Testing device for long-term and short-term resistance of heat-resistant glass and testing method using testing device Download PDFInfo
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- CN114594127A CN114594127A CN202210144351.4A CN202210144351A CN114594127A CN 114594127 A CN114594127 A CN 114594127A CN 202210144351 A CN202210144351 A CN 202210144351A CN 114594127 A CN114594127 A CN 114594127A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The application provides a testing device for long-term and short-term resistance of heat-resistant glass and a testing method using the device, wherein the testing device comprises the following steps: a heating furnace for heating heat-resistant glass; a temperature sensor for measuring a temperature inside the heating furnace; a weight sensor for measuring the weight of the heat-resistant glass; the sample clamp is connected with the weight sensor through a bearing rod at the lower end of the weight sensor; the camera device is used for acquiring images of the heat-resistant glass in the heating furnace; and a computer connected to the heating furnace, the image pickup device, the temperature sensor and the weight sensor. The weight sensor and the camera device can monitor cracks, damages, weight changes and deformation discoloration of the heat-resistant glass in the long-term and short-term resistance test in real time, can determine the cycle of the cracks, the damages, the weight changes and the deformation discoloration of the heat-resistant glass, and improve the accuracy of the test result.
Description
Technical Field
The application relates to the technical field of glass, in particular to a device for testing long-term and short-term resistance of heat-resistant glass and a testing method using the device.
Background
A material that undergoes a long-term change in temperature without a chemical, physical, or appearance change such as a break, crack, or the like is referred to as long-term resistance, and a material that undergoes a short-term change in temperature without a chemical, physical, or appearance change such as a break, crack, or the like is referred to as short-term resistance. Long-term resistance is an important property of heat-resistant glass to cope with long-term changes in temperature. When the temperature of the heat-resistant glass is changed, the object cannot be completely freely expanded and contracted due to external constraint and mutual constraint among all parts in the heat-resistant glass to generate thermal stress, and when the thermal stress exceeds the ultimate strength of the material, the material can generate cracks, damage, deformation and discoloration to damage. The long and short term resistance of pyrex is mainly determined by its thermal expansion coefficient, thermal conductivity, fracture toughness, specific heat and strength.
Heat resistant glass is used in architectural glass and high temperature observation windows and has high heat resistance, and long-term resistance is required to be tested in order to prevent the heat resistant glass from being damaged due to long-term temperature change during use. At present, a method for testing the long-term and short-term resistance of heat-resistant glass comprises the steps of placing a sample to be tested in a muffle furnace, heating to 500 ℃ from room temperature (heating to 200 ℃ for short-term resistance), keeping the temperature for 2 hours, then closing a heating program, naturally cooling for 2 hours along with the furnace, wherein the process is a period (4 hours), the whole process needs to be circulated for 100 periods, and finally taking out the sample to observe whether the sample is damaged, cracked, deformed and discolored. In the prior art, the testing time of the long and short term resistance is too long, the crack, the damage, the weight change and the deformation discoloration of the tested sample in the period of the second time can not be determined, and the crack, the damage, the weight change and the deformation discoloration of the heat-resistant glass in the testing of the long and short term resistance can not be monitored in real time.
Disclosure of Invention
The invention aims to provide a device for testing the long-term and short-term resistance of heat-resistant glass and a testing method using the device, so as to monitor cracks, damages, weight changes and deformation discoloration of the heat-resistant glass in the long-term and short-term resistance test in real time. The specific technical scheme is as follows:
the present application provides in a first aspect a device for testing the long-term and short-term resistance of a heat-resistant glass, comprising:
the heating furnace is used for heating the heat-resistant glass and comprises an observation cylinder and an observation window positioned on the outermost side of the observation cylinder;
a temperature sensor for measuring a temperature within the heating furnace;
a weight sensor for measuring the weight of the heat-resistant glass;
the sample clamp is connected with the weight sensor through a bearing rod at the lower end of the weight sensor;
an image pickup device for picking up an image of the heat-resistant glass in the heating furnace through the observation window and the observation cylinder;
a computer connected to the heating furnace, the image pickup device, the temperature sensor, and the weight sensor.
In some embodiments of the present application, the test device further comprises:
the material of the bearing rod and the sample clamp is selected from platinum or a platinum alloy.
In some embodiments of the present application, the material of the viewing window is selected from quartz glass or pyrex.
In some embodiments of the present application, the heating furnace is provided with an insulating layer around the heating furnace.
A second aspect of the present application provides a method for testing long-term short-term resistance of a heat-resistant glass, which utilizes the apparatus for testing long-term short-term resistance of a heat-resistant glass provided by the present application, the method comprising the steps of:
(1) fixing a heat-resistant glass sample on a sample clamp, and recording the initial weight of the heat-resistant glass as W;
(2) controlling the heating furnace to heat to 200 ℃ or 500 ℃, preserving the heat for 2 hours, stopping heating, and naturally cooling the heating furnace for 2 hours;
the weight of the heat-resistant glass is monitored in real time through a weight sensor, and an image of the heat-resistant glass is acquired through a camera device;
(3) repeating the step (2), stopping heating when the weight of the heat-resistant glass is reduced by more than 0.1% of the initial weight W, and recording the repeated times; or repeating the step (2)100 times when the weight of the heat resistant glass is reduced by not more than 0.1% of the starting weight W.
In some embodiments of the present application, the heating, holding, cooling, and stopping of the heating of the furnace are controlled by a computer.
In some embodiments of the present application, the weight sensor transmits the weight of the heat resistant glass to a computer in real time; the camera device transmits the image of the heat-resistant glass to a computer in real time; and the computer controls the heating furnace to perform a test cycle according to the weight.
The application provides a testing device for long-term and short-term resistance of heat-resistant glass and a testing method using the device, wherein the testing device comprises the following components: the heating furnace is used for heating the heat-resistant glass and comprises an observation cylinder and an observation window positioned on the outermost side of the observation cylinder; a temperature sensor for measuring a temperature inside the heating furnace; a weight sensor for measuring the weight of the heat-resistant glass; the sample clamp is connected with the weight sensor through a bearing rod at the lower end of the weight sensor; an image pickup device for acquiring an image of the heat-resistant glass in the heating furnace through the observation window and the observation cylinder; a computer connected to the heating furnace, the image pickup device, the temperature sensor, and the weight sensor. The weight sensor and the camera device can monitor cracks, damages, weight changes and deformation discoloration of the heat-resistant glass in the long-term and short-term resistance test in real time, can determine the cycle in which the cracks, damages, weight changes and deformation discoloration of the heat-resistant glass occur, and improve the accuracy of the test result.
Of course, not all advantages described above need to be achieved at the same time in the practice of any one product or method of the present application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a testing device for long-term and short-term resistance provided by an embodiment of the present application;
fig. 2 is a schematic cross-sectional structural diagram of a heating furnace provided in an embodiment of the present application.
Reference numerals: 1. the device comprises a heating furnace, 2. a temperature sensor, 3. a weight sensor, 4. a sample clamp, 5. a bearing rod, 6. a camera device, 7. a computer, 11. an observation cylinder, 12. an observation window and 13. an insulating layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the following description is made clearly and completely with reference to the accompanying drawings and examples, and it is to be understood that the described examples are only a part of the examples of the present application, and not all examples. All other embodiments that can be derived by one of ordinary skill in the art from the description herein are intended to be within the scope of the present disclosure.
In the embodiments disclosed in the present application, the descriptions of the orientations such as "upper", "lower", "inner", "outer", etc. are made with reference to the general use state of the test apparatus for the long-and short-term resistance of the heat-resistant glass.
As shown in fig. 1 and 2, the present example provides a device for testing the long-term and short-term resistance of pyrex. The test device includes: a heating furnace 1 for heating heat-resistant glass, the heating furnace 1 comprising an observation cylinder 11 and an observation window 12 located at the outermost side of the observation cylinder 11; a temperature sensor 2 for measuring the temperature in the heating furnace 1; a weight sensor 3 for measuring the weight of the heat-resistant glass; the sample clamp 4 is connected with the weight sensor 3 through a bearing rod 5 at the lower end of the weight sensor 3; an imaging device 6 for acquiring an image of the heat-resistant glass in the heating furnace 1 through the observation window 12 and the observation tube 11; a computer 7 connected to the heating furnace 1, the imaging device 6, the temperature sensor 2, and the weight sensor 3.
In the application, the computer 7 is connected with the heating furnace 1, and the computer 7 is used for controlling the heating, heat preservation, cooling and heating stop of the heating furnace 1; the computer 7 is connected with the temperature sensor 2, the computer 7 is used for controlling the temperature sensor 2 to be turned on and off, the temperature sensor 2 is used for transmitting the measured temperature in the heating furnace 1 to the computer 7 in real time, and then the computer 7 adjusts the temperature in the heating furnace 1 based on the received temperature; the computer 7 is connected with the camera device 6, the computer 7 is used for controlling the on and off of the camera device 6, the camera device 6 is used for transmitting the acquired image of the heat-resistant glass to the computer 7 in real time, and the computer 7 can monitor cracks, damages, deformation and discoloration of the heat-resistant glass in the heating process in real time; the computer 7 is connected with the weight sensor 3, the computer 7 is used for controlling the on and off of the weight sensor 3, the weight sensor 3 is used for transmitting the weight of the heat-resistant glass to the computer 7, the computer 7 can monitor the weight change of the heat-resistant glass caused by cracks and damages generated in the heating process in real time, and the computer 7 controls the heating furnace 1 to perform a test cycle according to the weight.
In some embodiments of the present application, the material of the load-bearing bar 5 and the sample holder 4 is selected from platinum or a platinum-yellow alloy. Through setting up bearing bar 5 with the material of sample holder 4 includes platinum or yellow platinum alloy, can ensure that bearing bar 5 and sample holder 4 are high temperature resistant and difficult deformation.
In some embodiments of the present application, the material of the viewing window 12 is selected from quartz glass or pyrex. By providing the material of the viewing window 12 comprising quartz glass, the high temperature resistance of the viewing window can be ensured. By setting the content of quartz in the observation window 12 to be high, the transparency of the observation window 12 is high, and the image of the heat-resistant glass collected by the camera device 6 through the observation window 12 can be ensured to be clear.
In some embodiments of the present application, as shown in fig. 1, the observation tube 11 may have a shape of a long tube protruding outside the heating furnace 1.
In some embodiments of the present application, as shown in fig. 1, the heating furnace 1 is provided with an insulating layer 13 around the periphery. The heat preservation effect of the heating furnace 1 can be improved by arranging the heat preservation layers 13 around the heating furnace 1.
In some embodiments of the present application, the mobile terminal device is wirelessly connected to the computer 7, and further, the computer 7 can be remotely operated through the mobile terminal device, so that the test process can be monitored in real time without being in a test site. The mobile terminal device may be a mobile phone, for example.
In the present application, the specific types of the heating furnace, the weight sensor, the temperature sensor, and the image pickup device are not particularly limited, and those skilled in the art can select the heating furnace, the weight sensor, the temperature sensor, and the image pickup device according to actual needs as long as the purpose of the present application is achieved.
In summary, the present application provides a device for testing long-term and short-term resistance of pyrex. The testing device comprises a heating furnace, a testing device and a testing device, wherein the heating furnace is used for heating the heat-resistant glass and comprises an observation cylinder and an observation window positioned at the outermost side of the observation cylinder; a temperature sensor for measuring a temperature within the heating furnace; a weight sensor for measuring the weight of the heat-resistant glass; an image pickup device for picking up an image of the heat-resistant glass in the heating furnace through the observation window and the observation cylinder; a computer connected to the heating furnace, the image pickup device, the temperature sensor, and the weight sensor. The computer can remotely control the heating furnace, so that the operation is convenient; the weight sensor and the camera device can monitor cracks, damages, weight changes and deformation discoloration of the heat-resistant glass in the long-term and short-term resistance test in real time, can determine the cycle of the cracks, the damages, the weight changes and the deformation discoloration of the heat-resistant glass, and improve the accuracy of the test result.
The application also provides a method for testing the long-term and short-term resistance of the heat-resistant glass, which utilizes the device for testing the long-term and short-term resistance of the heat-resistant glass, and the method comprises the following steps:
(1) the pyrex sample was fixed to a sample holder and the starting weight of the pyrex was recorded as W.
In some embodiments of the present application, the length of the pyrex is 300mm, the width is 210mm, the thickness of the pyrex is not limited, and the skilled person can select the pyrex according to the actual requirement as long as the purpose of the present application is satisfied, for example, the size of the pyrex can be 300mm × 210mm × 5 mm.
(2) Controlling the heating furnace to heat up to 200 ℃ or 500 ℃, preserving heat for 2 hours, stopping heating, and naturally cooling the heating furnace for 2 hours;
the weight of the heat-resistant glass is monitored in real time through the weight sensor, and the image of the heat-resistant glass is collected through the camera device.
In some embodiments of the present application, the heating, holding, cooling, and stopping of the heating of the furnace are controlled by a computer.
(3) Repeating the step (2), stopping heating when the weight of the heat-resistant glass is reduced by more than 0.1% of the initial weight W, and recording the repeated times; or repeating the step (2)100 times when the weight of the heat resistant glass is reduced by not more than 0.1% of the starting weight W.
In some embodiments of the present application, the weight sensor transmits the weight of the heat resistant glass to a computer in real time; the camera device transmits the image of the heat-resistant glass to a computer in real time; and the computer controls the heating furnace to perform a test cycle according to the weight.
Heating a sample with the size of 300mm multiplied by 210mm to 500 ℃ at high temperature (heating to 200 ℃ with short-term resistance), preserving heat for 2 hours, closing a power supply of a heating furnace, cooling for 2 hours, and circulating for 100 times, wherein the heat-resistant glass has no damage, explosion and change in physical and chemical properties (colors), and has long short-term resistance; if the heat-resistant glass has any breakage, explosion and change in physical and chemical properties (color), the heat-resistant glass does not have long-term short-term resistance.
According to the method for testing the long-term and short-term resistance of the heat-resistant glass, the computer can remotely control the heating furnace, the temperature sensor, the weight sensor and the camera device in the testing process by utilizing the device for testing the long-term and short-term resistance of the heat-resistant glass, and the operation is convenient; the testing method can monitor cracks, damages, weight changes and deformation discoloration of the heat-resistant glass in the long-term and short-term resistance tests in real time, can determine the cycle of the cracks, the damages, the weight changes and the deformation discoloration of the heat-resistant glass, and improves the accuracy of the test result.
The technical solutions of the present application will be described below with reference to specific embodiments, and the described embodiments are only a part of embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example 1
< Long-term resistance test of Heat-resistant glass >
(1) A sample of pyrex, having dimensions of 300mm x 210mm x 5mm, was fixed to a sample holder and the pyrex was recorded to have an initial weight of 768.95 g.
(2) Controlling the heating furnace to raise the temperature to 500 ℃ by the computer, preserving the heat for 2 hours, stopping heating, and naturally cooling the heating furnace for 2 hours;
the weight of the heat-resistant glass is monitored in real time through the weight sensor and is transmitted to the computer, and the image of the heat-resistant glass is acquired through the camera device and is transmitted to the computer.
(3) And (3) after repeating the step (2) for 73 times, monitoring by a weight sensor to show that the weight of the heat-resistant glass is changed from the initial weight of 768.95g to 658.23g, and an image of the heat-resistant glass transmitted to a computer by a camera device is obviously broken by visual observation, so that the heat-resistant glass sample is judged to be broken, the computer controls a heating furnace to turn off a power supply, and the heat-resistant glass sample is judged to be unqualified in long-term resistance after the experiment is finished.
Example 2
< Long-term resistance test of Heat-resistant glass >
(1) A heat-resistant glass having dimensions of 300mm × 210mm × 5mm was fixed to the sample holder, and the starting weight of the heat-resistant glass was recorded as 767.53 g.
Step (2) is the same as in example 1.
(3) And (3) repeating the step (2) for 100 times, wherein the weight of the heat-resistant glass is not changed during the monitoring by the weight sensor, the physical and chemical properties of the image of the heat-resistant glass transmitted to the computer by the camera device are not changed, and after the test is finished, the heat-resistant glass sample is taken out from the heating furnace without any change, and the long-term resistance of the heat-resistant glass sample is judged to reach the standard.
Example 3
< short-term resistance test of Heat-resistant glass >
(1) A sample of pyrex, having dimensions of 300mm x 210mm x 5mm, was fixed to a sample holder and the pyrex was recorded to have an initial weight of 770.01 g.
Step (2) was the same as in example 1 except that the heating temperature was 200 ℃;
(3) and (3) after the step (2) is repeated 87 times, the weight sensor monitors that the weight of the heat-resistant glass is changed from the initial weight of 770.01g to 753.65g, and slight breakage is observed in an image of the heat-resistant glass transmitted to the computer by the camera device, so that the heat-resistant glass sample is judged to be broken, the computer controls the heating furnace to turn off the power supply, the experiment is finished, and the short-term resistance of the heat-resistant glass sample is judged to be not up to the standard.
Example 4
< short-term resistance test of Heat-resistant glass >
(1) A sample of pyrex, having dimensions of 300mm x 210mm x 5mm, was fixed to a sample holder and the pyrex was recorded to have an initial weight of 769.05 g.
Step (2) is the same as in example 3;
(3) and (3) repeating the step (2) for 100 times, wherein the weight sensor monitors that the weight of the heat-resistant glass is unchanged, the image of the heat-resistant glass transmitted to the computer by the camera device is unchanged in physical and chemical properties, and after the test is finished, the heat-resistant glass sample is taken out from the heating furnace and is not changed at all, and the short-term resistance of the heat-resistant glass is judged to reach the standard.
As can be seen from the examples 1 and 4, the long-term and short-term resistance testing method of the heat-resistant glass adopted by the application has the advantages that a computer can remotely control a heating furnace, and the operation is convenient; the testing method can monitor cracks, damages, weight changes and deformation discoloration of the heat-resistant glass in the long-term and short-term resistance tests in real time, can determine the cycle of the cracks, the damages, the weight changes and the deformation discoloration of the heat-resistant glass, and improves the accuracy of the test result.
The above description is only for the preferred embodiment of the present application and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the protection scope of the present application.
Claims (7)
1. A device for testing the long-term and short-term resistance of a heat-resistant glass, comprising:
the heating furnace is used for heating the heat-resistant glass and comprises an observation cylinder and an observation window positioned on the outermost side of the observation cylinder;
a temperature sensor for measuring a temperature within the heating furnace;
a weight sensor for measuring the weight of the heat-resistant glass;
the sample clamp is connected with the weight sensor through a bearing rod at the lower end of the weight sensor;
an image pickup device for picking up an image of the heat-resistant glass in the heating furnace through the observation window and the observation cylinder;
a computer connected to the heating furnace, the image pickup device, the temperature sensor, and the weight sensor.
2. The testing device of claim 1, wherein the material of the load-bearing bar and the sample holder is selected from platinum or a yellow platinum alloy.
3. The test device of claim 1, wherein the viewing window is made of a material selected from the group consisting of quartz and pyrex.
4. The testing device of claim 1, wherein the heating furnace is provided with an insulating layer around the heating furnace.
5. A method for testing the long-term and short-term resistance of a heat-resistant glass, characterized in that it comprises the following steps:
(1) fixing a heat-resistant glass sample on a sample clamp, and recording the initial weight of the heat-resistant glass as W;
(2) controlling the heating furnace to heat to 200 ℃ or 500 ℃, preserving the heat for 2 hours, stopping heating, and naturally cooling the heating furnace for 2 hours;
the weight of the heat-resistant glass is monitored in real time through a weight sensor, and an image of the heat-resistant glass is acquired through a camera device;
(3) repeating the step (2), stopping heating when the weight of the heat-resistant glass is reduced by more than 0.1% of the initial weight W, and recording the repeated times; or repeating the step (2)100 times when the weight of the heat resistant glass is reduced by not more than 0.1% of the starting weight W.
6. The test method according to claim 5, wherein the heating, holding, cooling and stopping of the heating furnace are controlled by a computer.
7. The test method according to claim 5, wherein the weight sensor transmits the weight of the heat-resistant glass to a computer in real time; the camera device transmits the image of the heat-resistant glass to a computer in real time; and the computer controls the heating furnace to perform a test cycle according to the weight.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210144351.4A CN114594127A (en) | 2022-02-17 | 2022-02-17 | Testing device for long-term and short-term resistance of heat-resistant glass and testing method using testing device |
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| CN202210144351.4A CN114594127A (en) | 2022-02-17 | 2022-02-17 | Testing device for long-term and short-term resistance of heat-resistant glass and testing method using testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115219343A (en) * | 2022-07-22 | 2022-10-21 | 中国建筑材料科学研究总院有限公司 | Device and method for evaluating high-temperature and high-pressure resistance of glass |
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2022
- 2022-02-17 CN CN202210144351.4A patent/CN114594127A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115219343A (en) * | 2022-07-22 | 2022-10-21 | 中国建筑材料科学研究总院有限公司 | Device and method for evaluating high-temperature and high-pressure resistance of glass |
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