CN111854968B - Method for accurately measuring temperature of aluminum ingot by infrared thermometer - Google Patents
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- CN111854968B CN111854968B CN202010766310.XA CN202010766310A CN111854968B CN 111854968 B CN111854968 B CN 111854968B CN 202010766310 A CN202010766310 A CN 202010766310A CN 111854968 B CN111854968 B CN 111854968B
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 138
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 138
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000005096 rolling process Methods 0.000 claims abstract description 28
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 20
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 230000004888 barrier function Effects 0.000 abstract description 3
- 239000000523 sample Substances 0.000 description 26
- 238000010438 heat treatment Methods 0.000 description 11
- 238000005259 measurement Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0003—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiant heat transfer of samples, e.g. emittance meter
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Abstract
The method for accurately measuring the temperature of the aluminum ingot by using the infrared thermometer is characterized in that two infrared thermometers are arranged when the infrared thermometer is actually applied to the temperature measurement of the aluminum ingot; the emissivity of the two infrared thermometers is respectively set to be different emissivity; two infrared thermometers with different emissivity are used for measuring the temperature of the same aluminum ingot, and two different temperature values are measured; establishing simultaneous equations according to the measured two different temperature values and the emissivity set by the two infrared thermometers, and solving to obtain the actual temperature of the measured aluminum ingot; when the method is applied to aluminum ingot temperature measurement, the problems that the measured temperature and the actual temperature of the aluminum ingot are greatly different and the measured temperature stability is poor due to different surface states of the aluminum ingot are automatically eliminated, so that technical barriers are cleared for popularization and application of the infrared thermometer to aluminum ingot temperature measurement in aluminum alloy rolling processing.
Description
Technical Field
The invention belongs to the technical field of aluminum ingot temperature measurement in the aluminum alloy rolling process, and particularly relates to a method for accurately measuring the temperature of an aluminum ingot by an infrared thermometer.
Background
Before rolling the aluminum alloy, accurately controlling the initial heating temperature of an aluminum ingot; at present, a thermocouple mode is generally adopted for temperature measurement of an aluminum ingot, but when the thermocouple is adopted for measurement, an air cylinder is needed to push the thermocouple to contact with the aluminum ingot; the thermocouple and the air cylinder are arranged at the lower part of the heating furnace and are communicated with the heating furnace through the opening, so that the actual working environment of the thermocouple and the air cylinder is in a high-temperature state, the thermocouple and the air cylinder are extremely easy to damage, and the workload of maintenance of the thermocouple and the air cylinder is increased; particularly, when the heating furnace continuously works, once a thermocouple and a cylinder are damaged, the furnace cannot be stopped and maintained in time, at the moment, the actual heating temperature of the aluminum ingot cannot be measured, an operator can only estimate the actual temperature of the aluminum ingot through the furnace temperature and the heating time by experience to operate, if the temperature is estimated incorrectly, the aluminum ingot is likely to fail to be rolled, and great economic loss is brought to enterprises; at present, enterprises try to measure the heating temperature of an aluminum ingot by using a non-contact infrared thermometer, but in practical application, the problem that the measured temperature and the practical temperature of the aluminum ingot have large difference and the stability of measured data are poor is found, because the milling processing and sawing processing of the surface of the aluminum ingot can cause the difference of the surface states of the aluminum ingot, the difference of the placing time of the aluminum ingot after the surface processing is finished can also cause the difference of the surface states, and the difference of the emissivity of the aluminum ingot is caused by the difference of the surface states of the aluminum ingot, and meanwhile, the surface emissivity of the aluminum ingot is smaller, so that the problem that the measured temperature and the practical temperature of the aluminum ingot have large difference and the stability of the measured data are poor when the infrared thermometer measures the temperature of the aluminum ingot is influenced in the popularization application of the infrared thermometer to the temperature measurement of the aluminum ingot in the aluminum alloy rolling processing.
Disclosure of Invention
In order to overcome the defects in the background technology, the invention discloses a method for accurately measuring the temperature of an aluminum ingot by an infrared thermometer, which comprises the following steps: when the infrared thermometer is actually applied to the temperature measurement of the aluminum ingot, two infrared thermometers are arranged; the emissivity of the two infrared thermometers is respectively set to be different emissivity; two infrared thermometers with different emissivity are used for measuring the temperature of the same aluminum ingot, and two different temperature values are measured; establishing simultaneous equations according to the measured two different temperature values and the emissivity set by the two infrared thermometers, and solving to obtain the actual temperature of the measured aluminum ingot; when the method is applied to aluminum ingot temperature measurement, the problems that the measured temperature and the actual temperature of the aluminum ingot are greatly different and the measured data stability is poor due to different surface states of the aluminum ingot are automatically eliminated, so that technical barriers are cleared for popularization and application of the infrared thermometer in aluminum alloy rolling processing.
In order to achieve the aim of the invention, the invention adopts the following technical scheme: the method for accurately measuring the temperature of the aluminum ingot by the infrared thermometer is characterized in that two infrared thermometers for actually measuring the temperature of the aluminum ingot are arranged; emissivity of the two infrared thermometers is respectively set to be differentEmissivity epsilon of (2) 1 、ε 2 The method comprises the steps of carrying out a first treatment on the surface of the Two infrared thermometers with different emissivity are used for measuring the temperature of the same aluminum ingot to obtain two different temperature values T 1 、T 2 The method comprises the steps of carrying out a first treatment on the surface of the And establishing simultaneous equations according to the measured two different temperature values and the emissivity set by the two infrared thermometers, and solving to obtain the actual temperature of the measured aluminum ingot.
Further, the actual temperature calculation formula of the aluminum ingot is as follows:
(T n-1 nT i -nT n )ε 2 -T i n ε+T i n ε i ＝0……(1)
in the formula, T is the actual temperature of the measured aluminum ingot; n is a characteristic coefficient of the infrared thermometer, which is related to the working band of the infrared thermometer, and when the selected working band of the infrared thermometer is 8-13 mu m, the value of n is 3.9889 and is approximately 4; t (T) i The temperature indication values of the infrared thermometers are respectively measured on the same aluminum ingot; epsilon is the actual infrared emissivity of the measured aluminum ingot; epsilon i Emissivity actually set for the two infrared thermometers; in the actual measurement process, the temperature indication value T of the same aluminum ingot measured by two infrared thermometers 1 、T 2 The difference value exists between the measured aluminum ingot and the actual temperature T of the measured aluminum ingot, and the difference value is generated because of the emissivity epsilon actually set by the two infrared measuring instruments 1 、ε 2 The difference between the measured aluminum ingot and the actual emissivity epsilon of the aluminum ingot is caused, and the actual emissivity epsilon of the aluminum ingot is unknown when the two infrared thermometers measure the temperature of the aluminum ingot, so that the measured aluminum ingot temperature is also an important reason that the temperature measurement output value is greatly different from the actual temperature of the aluminum ingot and the stability of the measurement data is poor when the infrared thermometers are currently used for measuring the temperature of the aluminum ingot, and the prior art cannot be eliminated when the infrared thermometers are actually operated on site; t measured by two infrared thermometers 1 、T 2 Epsilon 1 、ε 2 Respectively, into the formula (1), the following formula is obtained:
(T n-1 nT 1 -nT n )ε 2 -T 1 n ε+T 1 n ε 1 ＝0……(2)
(T n-1 nT 2 -nT n )ε 2 -T 2 n ε+T 2 n ε 2 ＝0……(3)
solving the formulas (2) and (3) simultaneously, and calculating to obtain the actual temperature T of the aluminum ingot;
the actual temperature calculation formula of the aluminum ingot is simplified by the temperature measurement error calculation formula of the infrared thermometer, and the temperature measurement error calculation formula is as follows:
dT＝T i -T……(5)
dε＝ε-ε i ……(6)
wherein T is u Is ambient temperature; t (T) i The temperature indication value is an infrared thermometer temperature indication value; dT is the temperature error value measured by the infrared thermometer; d epsilon is the error value of the actual emissivity of the measured aluminum ingot and the emissivity actually set by the infrared measuring instrument; epsilon n Emissivity actually set for the infrared measuring instrument; subscript i is 1 or 2;
when the infrared thermometer works, the ambient temperature T u Typically 25.0C, the temperature of the ingot is typically greater than 350.0C, thus T u Is far smaller than T, the actual value of n is between 4 and 9, when the value of n is 4,approaching zero, so equation (4) reduces to:
substituting the formulas (5) and (6) into the formula (7), and expanding to obtain the actual temperature calculation formula (1) of the aluminum ingot.
Further, emissivity epsilon of two infrared thermometers 1 、ε 2 The setting method comprises the following steps: setting the standard steel sample and aluminum sample for infrared thermometer calibration at the temperatureIn the displayed muffle furnace, the temperature is set as the average value of the starting rolling temperature of the common aluminum alloy mark; standing for two hours to ensure that the standard steel sample and the aluminum sample reach heat balance and keep consistent with the temperature set by the muffle furnace; then, respectively aligning the two infrared thermometers with a standard steel sample and an aluminum sample for calibration to calibrate emissivity, wherein the two infrared thermometers respectively display different temperatures before the emissivity calibration, and the displayed temperatures are different from the temperature set by a muffle furnace under the general condition; the emissivity of the two infrared thermometers is adjusted and set, so that the display temperature of the two infrared thermometers is the same as the display temperature of the muffle furnace; at this time, the emissivity set by the two infrared thermometers is epsilon 1 、ε 2 The method comprises the steps of carrying out a first treatment on the surface of the The supplementary explanation is that the standard steel sample and the aluminum sample are adopted to calibrate the emissivity of the infrared thermometer, and the emissivity of the standard steel sample and the emissivity of the aluminum sample are greatly different, so that the error of the finally measured actual temperature of the aluminum ingot can be reduced.
Furthermore, the two infrared thermometers are of the same model, so that the consistency of parameters of the two infrared thermometers is ensured, the accuracy of the finally measured aluminum ingot temperature is ensured, and meanwhile, the error probability in actual implementation is reduced.
Further, the common aluminum alloy brand rolling temperature is divided into an initial rolling temperature and a finish rolling temperature; the initial rolling temperature is generally 380.0-510.0 degrees, and the emissivity epsilon of two infrared thermometers 1 、ε 2 445.0C DEG is taken during setting; the finish rolling temperature is generally 350.0-400.0 ℃ and the emissivity epsilon of two infrared thermometers 1 、ε 2 Setting 375.0C.
Further, two infrared thermometers with emissivity set according to the blooming temperature are used for measuring the actual temperature of the blooming aluminum ingot; two infrared thermometers with emissivity set according to the finish rolling temperature are used for measuring the actual temperature of the finish rolling aluminum ingot; in the temperature measurement error calculation formula (7), the temperature error value dT measured by the infrared thermometer and the error value dε of the actual emissivity of the aluminum ingot to be measured and the emissivity actually set by the infrared thermometer are in a linear relationship, but the linear relationship of the actual dT and dε and the theoretical value do not completely coincide, and the error gradually increases along with the increase of the deviation of the actual measured temperature from the calibration temperature; the purpose of setting the two calibration temperatures according to the initial rolling temperature and the finish rolling temperature is to further reduce the error of the actual measured temperature value.
Due to the adoption of the technical scheme, the invention has the following beneficial effects: the invention discloses a method for accurately measuring the temperature of an aluminum ingot by an infrared thermometer, which comprises the following steps: when the infrared thermometer is actually applied to the temperature measurement of the aluminum ingot, two infrared thermometers are arranged; the emissivity of the two infrared thermometers is respectively set to be different emissivity; two infrared thermometers with different emissivity are used for measuring the temperature of the same aluminum ingot, and two different temperature values are measured; establishing simultaneous equations according to the measured two different temperature values and the emissivity set by the two infrared thermometers, and solving to obtain the actual temperature of the measured aluminum ingot; when the method is applied to aluminum ingot temperature measurement, the problems that the measured temperature and the actual temperature of the aluminum ingot are greatly different and the measured data stability is poor due to different surface states of the aluminum ingot are automatically eliminated, so that technical barriers are cleared for popularization and application of the infrared thermometer in aluminum alloy rolling processing.
Detailed Description
The invention will be explained in more detail by the following examples, the purpose of which is to protect all technical improvements within the scope of the invention.
The method for accurately measuring the temperature of the aluminum ingot by the infrared thermometer is characterized in that two infrared thermometers for actually measuring the temperature of the aluminum ingot are arranged; emissivity of the two infrared thermometers is respectively set to be different emissivity epsilon 1 、ε 2 The method comprises the steps of carrying out a first treatment on the surface of the Two infrared thermometers with different emissivity are used for measuring the temperature of the same aluminum ingot to obtain two different temperature values T 1 、T 2 The method comprises the steps of carrying out a first treatment on the surface of the Establishing simultaneous equations according to the measured two different temperature values and the emissivity set by the two infrared thermometers, and solving to obtain the actual temperature of the measured aluminum ingot;
the actual temperature calculation formula of the aluminum ingot is as follows:
(T n-1 nT i -nT n )ε 2 -T i n ε+T i n ε i ＝0……(1)
in the formula, T is the actual temperature of the measured aluminum ingot; n is a characteristic coefficient of the infrared thermometer, which is related to the working band of the infrared thermometer, and when the selected working band of the infrared thermometer is 8-13 mu m, the value of n is 3.9889 and is approximately 4; t (T) i The temperature indication values of the infrared thermometers are respectively measured on the same aluminum ingot; epsilon is the actual infrared emissivity of the measured aluminum ingot; epsilon i Emissivity actually set for the two infrared thermometers; in the actual measurement process, the temperature indication value T of the same aluminum ingot measured by two infrared thermometers 1 、T 2 The difference value exists between the measured aluminum ingot and the actual temperature T of the measured aluminum ingot, and the difference value is generated because of the emissivity epsilon actually set by the two infrared measuring instruments 1 、ε 2 The difference between the measured aluminum ingot and the actual emissivity epsilon of the aluminum ingot is caused, and the actual emissivity epsilon of the aluminum ingot is unknown when the two infrared thermometers measure the temperature of the aluminum ingot, so that the measured aluminum ingot temperature is also an important reason that the temperature measurement output value is greatly different from the actual temperature of the aluminum ingot and the stability of the measurement data is poor when the infrared thermometers are currently used for measuring the temperature of the aluminum ingot, and the prior art cannot be eliminated when the infrared thermometers are actually operated on site; t measured by two infrared thermometers 1 、T 2 Epsilon 1 、ε 2 Respectively, into the formula (1), the following formula is obtained:
(T n-1 nT 1 -nT n )ε 2 -T 1 n ε+T 1 n ε 1 ＝0……(2)
(T n-1 nT 2 -nT n )ε 2 -T 2 n ε+T 2 n ε 2 ＝0……(3)
solving the formulas (2) and (3) simultaneously, and calculating to obtain the actual temperature T of the aluminum ingot;
the actual temperature calculation formula of the aluminum ingot is simplified by the temperature measurement error calculation formula of the infrared thermometer, and the temperature measurement error calculation formula is as follows:
dT＝T i -T……(5)
dε＝ε-ε i ……(6)
wherein T is u Is ambient temperature; t (T) i The temperature indication value is an infrared thermometer temperature indication value; dT is the temperature error value measured by the infrared thermometer; d epsilon is the error value of the actual emissivity of the measured aluminum ingot and the emissivity actually set by the infrared measuring instrument; epsilon n Emissivity actually set for the infrared measuring instrument; subscript i is 1 or 2;
when the infrared thermometer works, the ambient temperature T u Typically 25.0C, the temperature of the ingot is typically greater than 350.0C, thus T u Is far smaller than T, the actual value of n is between 4 and 9, when the value of n is 4,approaching zero, so equation (4) reduces to:
substituting the formulas (5) and (6) into the formula (7), and expanding to obtain an actual temperature calculation formula (1) of the aluminum ingot;
emissivity epsilon of two infrared thermometers 1 、ε 2 The setting method comprises the following steps: setting a standard steel sample and an aluminum sample for calibrating an infrared thermometer in a muffle furnace with temperature display, wherein the temperature is set as an average value of the starting rolling temperature of a common aluminum alloy mark; standing for two hours to ensure that the standard steel sample and the aluminum sample reach heat balance and keep consistent with the temperature set by the muffle furnace; then, respectively aligning the two infrared thermometers with a standard steel sample and an aluminum sample for calibration to calibrate emissivity, wherein the two infrared thermometers respectively display different temperatures before the emissivity calibration, and the displayed temperatures are different from the temperature set by a muffle furnace under the general condition; the emissivity of the two infrared thermometers is adjusted and set, so that the display temperature of the two infrared thermometers is the same as the display temperature of the muffle furnace; at this time, two infrared thermometers are arrangedThe emissivity of (a) is epsilon 1 、ε 2 The method comprises the steps of carrying out a first treatment on the surface of the The supplementary explanation is that the standard steel sample and the aluminum sample are adopted to calibrate the emissivity of the infrared thermometer, and the difference of the emissivity of the standard steel sample and the emissivity of the aluminum sample are larger, so that the error of the finally measured actual temperature of the aluminum ingot can be reduced;
the two infrared thermometers are of the same model, so that the consistency of parameters of the two infrared thermometers is ensured, the accuracy of the finally measured aluminum ingot temperature is ensured, and meanwhile, the error probability in actual implementation is reduced;
the common aluminum alloy grade rolling temperature is divided into a blooming temperature and a finishing temperature; the initial rolling temperature is generally 380.0-510.0 degrees, and the emissivity epsilon of two infrared thermometers 1 、ε 2 445.0C DEG is taken during setting; the finish rolling temperature is generally 350.0-400.0 ℃ and the emissivity epsilon of two infrared thermometers 1 、ε 2 375.0c° is taken during setting;
two infrared thermometers with emissivity set according to the blooming temperature are used for measuring the actual temperature of the blooming aluminum ingot; two infrared thermometers with emissivity set according to the finish rolling temperature are used for measuring the actual temperature of the finish rolling aluminum ingot; in the temperature measurement error calculation formula (7), the temperature error value dT measured by the infrared thermometer and the error value dε of the actual emissivity of the aluminum ingot to be measured and the emissivity actually set by the infrared thermometer are in a linear relationship, but the linear relationship of the actual dT and dε and the theoretical value do not completely coincide, and the error gradually increases along with the increase of the deviation of the actual measured temperature from the calibration temperature; the purpose of setting the two calibration temperatures according to the initial rolling temperature and the finish rolling temperature is to further reduce the error of the actual measured temperature value.
The following method for accurately measuring the temperature of the aluminum ingot by using the infrared thermometer is described in practical examples:
setting standard steel sample and aluminum sample cubes with side length of 100 x 100mm in a muffle furnace; wherein the standard steel sample material is 45# rolled steel, and the surface is subjected to bluing treatment; wherein the standard aluminum sample material is 5052, and the surface is oxidized; muffle furnace temperature was set to 445.0C; standing for two hours to ensure that the standard steel sample and the aluminum sample reach heat balance and the temperature set by the muffle furnace445.0 ℃ to be consistent; respectively aligning two infrared thermometers with working frequency ranges of 8-13 mu m with standard steel samples and aluminum samples for calibration through red light indication cursors to calibrate emissivity; emissivity of two infrared thermometers after calibration is epsilon respectively 1 ＝0.95、ε 2 ＝0.2；
Erecting an infrared thermometer with the set emissivity on the side wall of the aluminum ingot heating furnace close to the outlet, aligning the small holes arranged on the side wall of the aluminum ingot heating furnace with aluminum ingots in the heating furnace, and measuring the aluminum ingots in the heating furnace; a water cooling jacket is arranged outside the external temperature measuring instrument; the temperature of the aluminum ingot measured by the infrared thermometer with the emissivity of 0.95 is 420.1 degrees, and the temperature of the aluminum ingot measured by the infrared thermometer with the emissivity of 0.2 is 424.4 degrees; substituting the temperature measured by the two infrared thermometers and the set emissivity into a formula (T) n-1 nT i -nT n )ε 2 -T i n ε+T i n ε i In=0, the following two equations are obtained:
(T 4-1 4*(420.1+273.15)-4*T 4 )ε 2 -(420.1+273.15) 4 ε+(420.1+273.15) 4 0.95＝0
(T 4-1 4*(424.4+273.15)-4*T 4 )ε 2 -(424.4+273.15) 4 ε+(424.4+273.15) 4 0.2＝0
and (3) combining the two formulas, and calculating by using a computer to obtain the temperature T which is the actual temperature of the aluminum ingot.
The invention is not described in detail in the prior art.
Claims (4)
1. A method for accurately measuring the temperature of an aluminum ingot by an infrared thermometer is characterized by comprising the following steps: the two infrared thermometers for actually measuring the temperature of the aluminum ingot are two infrared thermometers of the same model; the emissivity of the two infrared thermometers is respectively set to be different emissivity; two infrared thermometers with different emissivity are used for measuring the temperature of the same aluminum ingot, and two different temperature values are measured; establishing simultaneous equations according to the measured two different temperature values and the emissivity set by the two infrared thermometers, and solving to obtain the actual temperature of the measured aluminum ingot;
the actual temperature calculation formula of the aluminum ingot is as follows:
……(1)
in the formula (i),the actual temperature of the measured aluminum ingot; />Is the characteristic coefficient of the infrared thermometer, and is related to the working wave band of the infrared thermometer; />Temperature indication values measured by two infrared thermometers on the same aluminum ingot respectively; />Is the actual infrared emissivity of the aluminum ingot; />Emissivity actually set for the two infrared thermometers; subscript i is 1 or 2; two infrared thermometers、/>Respectively carrying out the following formula (1) to obtain the following formula:
……(2)
……(3)
solving the formulas (2) and (3) simultaneously to calculate and obtain the actual temperature of the aluminum ingot；
The actual temperature calculation formula of the aluminum ingot is simplified by a temperature measurement error calculation formula, and the temperature measurement error calculation formula is as follows:
……(4)
……(5)
……(6)
wherein,is ambient temperature; />The temperature indication value is an infrared thermometer temperature indication value; />The temperature error value measured by the infrared thermometer; />Error values of the actual emissivity of the measured aluminum ingot and the actual emissivity set by the infrared measuring instrument; />Emissivity actually set for the infrared measuring instrument; subscript i is 1 or 2;
because ofFar less than->And actually +.>Has a value of 4-9, thus +.>Far less than zero, so equation (4) reduces to +.>……(7)；
Substituting the formulas (5) and (6) into the formula (7), and expanding to obtain the actual temperature calculation formula (1) of the aluminum ingot.
2. The method for accurately measuring the temperature of the aluminum ingot by using the infrared thermometer according to claim 1, which is characterized in that: emissivity of two infrared thermometersThe setting method comprises the following steps: setting a standard steel sample and an aluminum sample for calibrating an infrared thermometer in a muffle furnace with temperature display, wherein the calibration temperature of the muffle furnace is set as an average value of the starting rolling temperature of a common aluminum alloy mark; standing for several hours; then, respectively aligning the two infrared thermometers with a standard steel sample and an aluminum sample for calibration to calibrate emissivity, wherein the two infrared thermometers respectively display different temperatures; the emissivity of the two infrared thermometers is adjusted and set, so that the display temperature of the two infrared thermometers is the same as the display temperature of the muffle furnace; at this time, the emissivity of the two infrared thermometers is +.>、/>。
3. The method for accurately measuring the temperature of the aluminum ingot by the infrared thermometer according to claim 2, which is characterized in that: the common aluminum alloy grade rolling temperature is divided into a blooming temperature and a finishing temperature.
4. The method for accurately measuring the temperature of the aluminum ingot by using the infrared thermometer according to claim 3, which is characterized in that: two infrared thermometers with emissivity set according to the blooming temperature are used for measuring the actual temperature of the blooming aluminum ingot; two infrared thermometers with emissivity set according to the finish rolling temperature are used for measuring the actual temperature of the finish rolling aluminum ingot.
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| CN105716723A (en) * | 2016-04-05 | 2016-06-29 | 中国计量学院 | Device and method for improving temperature measuring precision of industrial site thermal imager |
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| "不同发射率下红外热图像的非稳态温度场测量研究";沈久利 等;《计量学报》;第40卷(第5期);第810-815页 * |
| "基于双响应波段工作的红外热像仪测温原理与误差分析";张波 等;《宇航计测技术》;第30卷(第6期);第11-15页 * |
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