CN117760576A - Alumina-based temperature measuring block ring standard, preparation method, value setting method and device - Google Patents
Alumina-based temperature measuring block ring standard, preparation method, value setting method and device Download PDFInfo
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- CN117760576A CN117760576A CN202311417095.2A CN202311417095A CN117760576A CN 117760576 A CN117760576 A CN 117760576A CN 202311417095 A CN202311417095 A CN 202311417095A CN 117760576 A CN117760576 A CN 117760576A
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 47
- 238000010304 firing Methods 0.000 claims abstract description 24
- 238000005245 sintering Methods 0.000 claims abstract description 24
- 238000005259 measurement Methods 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 9
- 239000004014 plasticizer Substances 0.000 claims abstract description 8
- 239000000654 additive Substances 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 5
- 238000007689 inspection Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000004321 preservation Methods 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000005485 electric heating Methods 0.000 claims description 4
- GALOTNBSUVEISR-UHFFFAOYSA-N molybdenum;silicon Chemical compound [Mo]#[Si] GALOTNBSUVEISR-UHFFFAOYSA-N 0.000 claims description 4
- 230000008602 contraction Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005469 granulation Methods 0.000 abstract description 4
- 230000003179 granulation Effects 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000004164 analytical calibration Methods 0.000 abstract description 2
- -1 mineralizer Substances 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 12
- 239000000919 ceramic Substances 0.000 description 7
- 230000008859 change Effects 0.000 description 7
- 239000000956 alloy Substances 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 6
- 230000008901 benefit Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 238000005272 metallurgy Methods 0.000 description 4
- 235000015895 biscuits Nutrition 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000006136 alcoholysis reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000013558 reference substance Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention belongs to the technical field of temperature detection, and discloses a method and a device for preparing and setting a temperature measuring block ring standard of alumina-based for temperature measurement, wherein the temperature measuring block ring is of a main structure of the system, alumina powder with different purities is selected according to the basic characteristic that alumina can linearly shrink at high temperature, and is matched with additives such as plasticizer, fluxing agent, mineralizer, reinforcing agent and the like, and then a blank of the temperature measuring block ring is prepared through granulation, and then a firing curve, sintering and parameter measurement are determined through dry press molding, so that the production of a product is completed. The scheme of the invention can be used for preparing temperature magnitude tracing and transmitting temperature measuring block rings, and determining the preparation process and assignment thereof according to the fixed value requirement of national standard substances, has a recognized reference value and uncertainty thereof, can be used as an important unit of a metering tracing chain, and is used for measuring instrument calibration or detection and other activities related to magnitude transmission or tracing.
Description
Technical Field
The invention belongs to the technical field of temperature detection, and particularly relates to a method and a device for preparing and fixing a ring standard of an alumina-based temperature measuring block for temperature measurement.
Background
At present, high-temperature measuring instruments such as thermocouples, temperature measuring cones, optical pyrometers and the like used in the temperature measuring method with traceable measuring results are limited by various conditions in a high-temperature furnace due to the application of the high-temperature measuring instruments and the defects, so that temperature measuring blocks/temperature measuring rings are widely used in various high-temperature furnaces. The temperature measuring block/ring has the advantages of showing the actual thermal effect of the products in the high temperature furnace and being free from the limitation of time and space.
In the field of high-temperature measurement in various industries, the temperature measuring blocks/rings sold in the market are used as a standard reference substance in high-temperature measurement and are commonly applied to temperature monitoring and comparison in a high-temperature furnace, generally, a manufacturer provides a size-temperature reference table in the working temperature range, basically, the high-temperature heat preservation time noted by the table is 1h, and the reference table of the size and the temperature after the sample is burnt is taken as a reference. The reference temperature values corresponding to the sizes of the temperature measuring blocks/the temperature measuring rings after burning are not traced, and the tracing performance is not realized in the aspect of metering.
The prior temperature measurement method based on the hard alloy discloses a temperature measurement method based on the hard alloy, which is characterized in that the upper limit value and the lower limit value of the target temperature of a measurement environment are determined, the change rule of the coercivity of a certain hard alloy along with the temperature of a secondary sintering environment is determined, the sintering temperature range is calibrated in a continuous change temperature range, the interval is evenly and equally divided, the change condition of the coercivity after secondary sintering of a hard alloy sample at the median temperature of each equally divided temperature range is measured, the curve of the secondary sintering temperature and the coercivity change value is fitted, hard alloy samples with the same performance and the same shape are placed at each position of the environment to be measured, the change values of the coercivity before and after sintering of each hard alloy sample are measured and are substituted into the fitted curve, and the temperature and the distribution condition of the environment to be measured are obtained. However, the present invention has problems in that the measurement of the coercivity is biased, the measurement apparatus is complicated, the relationship between the coercivity and the sintering temperature is a nonlinear curve, and there is a hysteresis phenomenon, thus causing a measurement error.
The other existing temperature measuring block/ring is made of an inorganic non-ceramic biscuit, but the heating rate, the heat preservation time, the cooling mode and the sintering pressure of the inorganic non-ceramic biscuit can influence the corresponding relation between the inorganic non-ceramic biscuit and the temperature. The invention only considers the use conditions such as heat preservation time, firing atmosphere and the like which can be referred, but does not consider other conditions which can affect the temperature measurement result, such as firing control parameters such as heating rate, sintering pressure and the like and the selection of a cooling mode. Therefore, the accuracy of its temperature measurement cannot be confirmed from a metrology point of view.
Through the above analysis, the problems and defects existing in the prior art are as follows:
(1) The measurement of the coercivity is biased, the measurement equipment is complicated, the relation curve of the coercivity and the sintering temperature is a nonlinear curve, and a hysteresis phenomenon exists, so that the measurement error is caused.
(2) The temperature measurement accuracy cannot be confirmed from the perspective of metering only by considering the use conditions which can be referred to such as the heat preservation time and the firing atmosphere, and not considering other conditions which affect the measurement result, such as the heating rate, the sintering pressure, and the like.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a method and a device for preparing and fixing the ring standard of an alumina-based temperature measuring block for temperature measurement.
The invention is realized in that an alumina-based temperature measuring block for temperature measurement transmission comprises:
the temperature measuring block is of a block structure or a circular ring structure, and according to the basic characteristic that the alumina powder can linearly shrink at high temperature, different shrinkage effects are generated at different temperatures by the temperature measuring block, and the sintering temperature is measured according to the shrinkage degree.
The invention further aims to provide a preparation method of the alumina-based temperature measurement block ring standard for carrying out temperature measurement, which comprises the steps of selecting alumina powder with different purities, preparing blanks of temperature measurement blocks by granulating after adding plasticizer, fluxing agent, mineralizer and reinforcing agent additives, performing dry press molding on the blanks by a tablet press to prepare circular, annular circular or square block samples, respectively measuring and recording the diameter, the outer diameter or the transverse length of the samples by using a simulated indication or a digital micrometer before and after high-temperature roasting, wherein the difference between the front value and the rear value is the contraction length, and corresponds to the highest sintering temperature of the high-temperature furnace.
Another object of the present invention is to provide a method for calibrating the ring standard of the alumina temperature measuring block for temperature measurement, the method comprising: the temperature setting method uses the average temperature of the set highest temperature heat preservation time period of the firing curve as the temperature value corresponding to the shrinkage length of the temperature measuring block/temperature measuring ring before and after high-temperature firing, the resolution of the shrinkage length measurement corresponding to the temperature of the temperature field is less than 3 ℃, and the accuracy is +/-5 ℃.
Another object of the present invention is to provide an apparatus for implementing the method for calibrating the ring standard of the alumina temperature measuring block for temperature measurement, the apparatus comprising: the measuring scene device is designed to be a vertical high-temperature furnace with a plurality of S-shaped thermocouples inserted into different positions on the top and the left and right sides, a heating system is an electric heating element consisting of silicon-molybdenum rods or an air inlet combustion system taking a high-speed gas nozzle as a main part, the S-shaped thermocouples inserted into the high-temperature furnace are connected with a temperature inspection instrument through compensation wires, and the temperature value of a temperature field where a temperature measuring block/a temperature measuring ring in the high-temperature furnace is located is read on the temperature inspection instrument.
In combination with the above technical solution and the technical problems to be solved, please analyze the following aspects to provide the following advantages and positive effects:
the technical scheme of the invention can be used for preparing temperature measuring blocks/temperature measuring rings for tracing and transmitting temperature measuring values, and determining the preparation process and assignment thereof according to the fixed value requirement of national standard substances, so that the temperature measuring blocks/temperature measuring rings have a recognized reference value and uncertainty thereof, and further a tracing comparison chain of the temperature measuring values measured by the temperature measuring blocks/temperature measuring rings is constructed, namely the temperature measuring blocks/temperature measuring rings can be used as an important unit of a metrology tracing chain and used for measuring instrument calibration or verification, measuring method evaluation or confirmation and other activities related to magnitude transmission or tracing.
Secondly, the technical scheme is regarded as a whole or from the perspective of products, and the technical scheme to be protected has the following technical effects and advantages:
(1) The method and the device design can be used for controlling the technological parameters and transmitting the temperature measurement values in the preparation of alumina-based temperature measuring blocks/ring standard substances.
(2) The preparation and value setting method and device of alumina-based temperature measuring block/ring standard substance can be used for temperature value transmission.
Thirdly, as inventive supplementary evidence of the claims of the present invention, the following important aspects are also presented:
(1) The expected benefits and commercial values after the technical scheme of the invention is converted are as follows:
the preparation and value setting method and device for the alumina-based temperature measuring block ring standard for temperature measurement can be used for high-temperature measurement in the related industries of ceramics, glass, metallurgy, high-temperature firing and the like, can accurately and conveniently measure high temperature such as sintering temperature, relates to the related heavy industrial fields of ceramics, glass, metallurgy, high-temperature firing and the like, can save production cost for merchants, and has huge commercial value.
(2) The technical scheme of the invention fills the technical blank in the domestic and foreign industries:
the temperature measurement in the blast furnace smelting industry at present does not utilize the characteristic that the transverse or radial length of a solid substance linearly changes along with the temperature to measure, the device designed by the invention utilizes the characteristic that aluminum oxide can linearly shrink at high temperature, adopts strict manufacturing process and measuring process, and characterizes the actual sintering temperature in the blast furnace through the change of the transverse or radial length of an object, so that the measurement is more accurate and the actual situation is fitted, and the measuring means fills the technical blank of domestic high-temperature sintering temperature measurement.
(3) The technical scheme of the invention solves the technical problems that people are always desirous of solving but are not successful all the time:
the device and the measuring method have high measuring accuracy and precision, are simple and convenient to measure, and solve the technical problems which are always desired to be solved.
(4) The technical scheme of the invention overcomes the technical bias: .
In the traditional concept, the temperature is reflected by the linear change of the transverse or radial length of the solid substance along with the temperature, the temperature is not accepted by people all the time, the measurement precision is considered to be low, and the phenomenon is not obvious.
Drawings
FIG. 1 is a front view of a device for preparing and calibrating an alumina-based temperature measurement block ring standard for temperature measurement and transmission, which is provided by the embodiment of the invention;
FIG. 2 is a longitudinal cross-sectional view of a device for preparing and quantifying ring labels of alumina-based temperature measurement blocks for temperature measurement according to an embodiment of the present invention；
FIG. 3 is a schematic illustration of a method for preparing an alumina-based temperature measurement block ring standard for temperature measurement according to an embodiment of the present invention 、 The method and the device measure the fitting curve of sintering temperature and transverse or radial shrinkage length and temperature of the material in the alumina-based block ring in the method;
FIG. 4 is a flow chart showing the preparation and calibration of the alumina-based temperature measurement block ring standard for temperature measurement and the implementation of the method and apparatus according to the embodiment of the present invention.
In the figure: 1. a temperature measuring block; 2. a tablet press; 3. a vertical high temperature furnace; 4. an S-type thermocouple; 5. a temperature inspection instrument.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
FIG. 1 is a front view showing the structure of the present invention2There is shown a longitudinal cross-sectional view of the structure of the present invention, the view3Is a fitting curve of the sintering temperature of the inventive structure and the transverse or radial shrinkage length of the material in the alumina matrix. Specifically: the alumina-based temperature measuring block ring standard for temperature measurement and transmission comprises:
the temperature measuring block (1) is of a block structure or a circular ring structure, and according to the basic characteristic that the alumina powder can linearly shrink at high temperature, different shrinkage effects are generated at different temperatures according to the temperature measuring block (1), and the sintering temperature is measured according to the shrinkage degree.
Further, alumina powder with different purity is selected, and is matched with additives such as plasticizer, fluxing agent, mineralizer, reinforcing agent and the like, then the blank of a temperature measuring block is manufactured through granulation, a tablet press (2) is used for carrying out dry pressing molding on the blank to manufacture round or square block samples, the diameter or the outer diameter or the transverse length of the samples are measured and recorded by a simulation indication or a digital display micrometer respectively before being put into a high-temperature furnace and after being roasted at high temperature, and the difference between the front value and the rear value is the contraction length, which corresponds to the highest sintering temperature of a vertical high-temperature furnace (3).
Further, the temperature setting method uses the average temperature of the set highest temperature heat preservation time period of the firing curve as the temperature value corresponding to the shrinkage length of the temperature measuring block/temperature measuring ring (1) before and after high-temperature firing, the resolution of the temperature corresponding to the shrinkage length measurement temperature is less than 3 ℃ and the accuracy is +/-5 ℃.
Further, the design matrix of the measuring scene device is a vertical high-temperature furnace (3) with a plurality of S-shaped thermocouples (4) inserted into different positions on the top and the left and the right sides, a heating system is an electric heating element formed by silicon-molybdenum rods or an air inlet combustion system mainly comprising a high-speed gas nozzle, the S-shaped thermocouples (4) inserted into the high-temperature furnace are connected with a temperature inspection instrument (5) through compensation wires, and the temperature value of a temperature field where a temperature measuring block/a temperature measuring ring (1) in the high-temperature furnace is located is read on the temperature inspection instrument (5).
The main scheme and effect description part provided by the embodiment of the invention are as follows:
as shown in the figure4The application flow of the high-temperature vibration fatigue tester provided by the embodiment of the invention comprises the following steps:
s1: granulating the mixed materials;
s2: compression molding;
s3: measuring the transverse or radial length of the sample before firing;
s4: setting a firing curve;
s5: heating in a high-temperature furnace;
s6: setting measurement parameters;
s7: recording parameters;
s8: cooling;
s9: taking out the sample;
s10: measuring the transverse or radial length of the sample after firing;
in the S1 stage, different additives are required to be added according to the characteristics of the material, and a plasticizer is required to be added because the viscosity of the material involved in the process is low.
In the S6 stage, the smaller the parameter acquisition interval is, the higher the measurement accuracy of the finished product is, but the too high acquisition interval increases the manufacturing cost of the product, so that it is important to select a proper acquisition interval.
And after the S8 stage, taking out the product after cooling to ensure the life and property safety of the staff.
The working principle part is as follows: the alumina powder is mixed with a plurality of compound additives, and 8% polyvinyl alcohol which is subjected to alcoholysis at 85 ℃ is used for granulating, and the plasticizer is added because the ingredients are all inorganic nonmetallic materials and have almost no plasticity, so that the plasticity of the blank is improved.
Mixing according to a preset proportion, granulating by adopting a dry method or a wet method, uniformly and alternately scattering various weighed additives into weighed aluminum oxide powder respectively, uniformly mixing, uniformly spraying PVA, stirring, uniformly mixing, and sieving with a 80-mesh or 100-mesh sieve to obtain the powder which is a blank for molding.
Pouring the blank into a die, performing dry pressing forming on a tablet press, and determining that the forming pressure of a temperature measuring ring is 15MPa and the pressure maintaining time is 60s; the forming pressure of the round and square temperature measuring blocks is 20MPa, the pressure maintaining time is 90s, the round blank of the temperature measuring blocks is manufactured, and the round blank of the temperature measuring blocks is put into a special high-temperature furnace for firing. Before firing, a firing curve is set firstly, the firing temperature is set according to the formula, meanwhile, an S-shaped thermocouple connected with a compensation wire and an aviation plug is inserted into a reserved temperature measuring hole of a high-temperature furnace, the position and the depth of the S-shaped thermocouple inserted into the kiln are determined according to the arrangement condition of the preset temperature measuring point, and in principle, the distance between the center point of a sample and a traced S-shaped thermocouple probe is not more than 1cm. The S-shaped thermocouples and the temperature inspection instrument which are all traced are connected by an aviation plug, measurement parameters are set on a display screen of the temperature inspection instrument after preheating for 1 hour, and the sampling time interval is generally set to 120S. When the temperature patrol instrument sounds a sound every time data are collected, the temperature displayed on the temperature control table of the high-temperature furnace is immediately recorded, so that the temperatures of the immediately adjacent traced S-shaped thermocouples are compared. After the firing is finished, the kiln door can be opened and the sample can be taken out when the temperature of the high-temperature furnace is controlled to be lower than 50 ℃.
In order to prove the inventive and technical value of the technical solution of the present invention, this section is an application example of the specific product or related technology application of the claim technical solution.
The preparation and value setting method and device for the alumina-based temperature measurement block ring standard for temperature measurement and transmission are mainly applied to high-temperature furnaces of related enterprises such as ceramics, glass, metallurgy, high-temperature firing and the like, are not limited to a certain field, can be expanded to a plurality of fields for temperature measurement, and can realize commercial value in a leasing mode besides sales equipment.
The device provided by the embodiment of the invention can be used for preparing temperature magnitude tracing and transmitting temperature measuring blocks, and the preparation process and assignment thereof are determined according to the fixed value requirement of national standard substances, so that the device has a recognized reference value and uncertainty thereof, and a tracing comparison chain of the temperature magnitude measured by the temperature measuring blocks is constructed and can be used as an important unit of a metrology tracing chain and used for activities related to magnitude transmission or tracing, such as calibration or verification of measuring instruments, evaluation or confirmation of measuring methods and the like. The temperature measurement which is prepared by the technical scheme of the invention and can be used for tracing and transmitting the temperature value is significant for high-temperature measurement in the related industries of ceramics, glass, metallurgy, high-temperature firing and the like, and the huge advantages of the invention can be represented by making graphs of the service life, the measurement precision and the use cost of other temperature measuring devices and products related to the invention.
Example 1: block alumina temperature measuring block
In the embodiment, alumina powder with the purity of 99.5 percent is selected, and a plasticizer, a fluxing agent, a mineralizer and an enhancer are added to prepare a blank of the temperature measuring block through granulation. And (5) performing dry press molding on the blank by using a tablet press to prepare square block samples. Before and after firing in a high temperature furnace, the transverse length of the sample was measured and recorded using a digital micrometer. The sintering temperature was calculated from the contracted length.
Example 2: alumina temperature measuring block ring with circular ring structure
In the embodiment, alumina powder with 99% purity is selected, and proper amounts of plasticizer, fluxing agent, mineralizer and reinforcing agent are added to prepare blanks of the temperature measuring block ring through granulation. And (5) performing dry press molding on the blank by using a tablet press to prepare a sample with a circular ring structure. Before and after firing in a high temperature furnace, the outer diameter of the sample was measured and recorded using a digital micrometer. The sintering temperature was calculated from the contracted length.
Example 3: multi-point temperature measurement and value determination method
In this example, a vertical type high temperature furnace was used, and a plurality of S-type thermocouples were inserted at different positions on the top, left and right sides thereof. The heating system adopts an electric heating element composed of silicon-molybdenum rods. The S-shaped thermocouple inserted into the high temperature furnace is connected with the temperature inspection instrument through a compensation lead. And reading the temperature magnitude of the temperature field where the temperature measuring block/ring in the high-temperature furnace is positioned on the temperature inspection instrument so as to realize high-precision temperature measurement with resolution less than 3 ℃ and accuracy of +/-5 ℃.
Example 4: temperature measuring and value fixing method for gas combustion heating system
In this example, a vertical type high temperature furnace was used, and a plurality of S-type thermocouples were inserted at different positions on the top, left and right sides thereof. The heat supply system adopts an air inlet combustion system mainly comprising a high-speed gas nozzle. The S-shaped thermocouple inserted into the high temperature furnace is connected with the temperature inspection instrument through a compensation lead. And reading the temperature magnitude of the temperature field where the temperature measuring block/ring in the high-temperature furnace is positioned on the temperature inspection instrument so as to realize high-precision temperature measurement with resolution less than 3 ℃ and accuracy of +/-5 ℃.
The above four embodiments show different types of alumina temperature block/ring structures, methods of manufacture, and applications of various high temperature furnace heating systems and methods of temperature measurement and value determination. The embodiments provide an effective technical scheme for the preparation, application and temperature measurement of the alumina-based temperature measurement block ring standard.
In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The foregoing is merely illustrative of specific embodiments of the present invention, and the scope of the invention is not limited thereto, but any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present invention will be apparent to those skilled in the art within the scope of the present invention.
Claims (4)
1. An alumina-based temperature measurement block ring standard for temperature measurement, comprising:
the temperature measuring block ring is of a block structure or a circular ring structure, and according to the basic characteristic that the alumina can linearly shrink at high temperature, different shrinkage effects are generated at different temperatures according to the temperature measuring block ring, and the sintering temperature is measured according to the shrinkage degree.
2. A method for preparing an alumina-based temperature measurement block ring standard for temperature measurement according to claim 1, comprising:
alumina powder with different purity is selected, and after being matched with plasticizer, fluxing agent, mineralizer and reinforcing agent additives, the mixture is granulated to prepare blanks of a temperature measuring block ring, the blanks are subjected to dry pressing molding by a tablet press to prepare round or annular round or square block samples, the diameter or the outer diameter or the transverse length of the samples are measured and recorded by a simulation indication or a digital display micrometer respectively before being put into a high-temperature furnace and after being roasted at high temperature, and the difference between the front value and the rear value is the contraction length, which corresponds to the highest sintering temperature of the high-temperature furnace.
3. A method of calibrating an alumina thermometric block ring standard for use in temperature measurement of claim 1, the method comprising:
the temperature setting method uses the average temperature of the set highest temperature heat preservation time period of the firing curve as the temperature value corresponding to the shrinkage length of the temperature measuring block/temperature measuring ring before and after high-temperature firing, the resolution of the shrinkage length measurement corresponding to the temperature of the temperature field is less than 3 ℃, and the accuracy is +/-5 ℃.
4. An apparatus for performing the method for calibrating an alumina thermometric block ring standard for use in temperature measurement according to claim 3, the apparatus comprising:
the measuring scene device is designed to be a vertical high-temperature furnace with a plurality of S-shaped thermocouples inserted into different positions on the top and the left and right sides, a heating system is an electric heating element consisting of silicon-molybdenum rods or an air inlet combustion system taking a high-speed gas nozzle as a main part, the S-shaped thermocouples inserted into the high-temperature furnace are connected with a temperature inspection instrument through compensation wires, and the temperature value of a temperature field where a temperature measuring block/a temperature measuring ring in the high-temperature furnace is located is read on the temperature inspection instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311417095.2A CN117760576A (en) | 2023-10-30 | 2023-10-30 | Alumina-based temperature measuring block ring standard, preparation method, value setting method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311417095.2A CN117760576A (en) | 2023-10-30 | 2023-10-30 | Alumina-based temperature measuring block ring standard, preparation method, value setting method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117760576A true CN117760576A (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311417095.2A Pending CN117760576A (en) | 2023-10-30 | 2023-10-30 | Alumina-based temperature measuring block ring standard, preparation method, value setting method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117760576A (en) |
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2023
- 2023-10-30 CN CN202311417095.2A patent/CN117760576A/en active Pending
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