Method for evaluating matching property of mixture based on furnace charge deformation rate integral area

Abstract

The invention relates to the field of sintering processes, and discloses a method for evaluating mixture matching based on furnace charge deformation rate integral area, which comprises the following steps: preparing a mixture into a sample with a set specification, placing the sample in an experimental device, and heating at a set heating rate in a controllable heating environment; monitoring the deformation behavior of the sample in the heating process in real time through a deformation rate sensor, collecting temperature and deformation rate data, and generating a temperature-deformation rate curve; based on the temperature-deformation rate curve, calculating an area under the curve by adopting numerical integration to obtain a temperature-deformation rate integral area; and comparing and analyzing the obtained integral area with an ideal reference value, and evaluating the matching property of the mixture. According to the method, through dynamic monitoring and quantitative analysis, the assimilation performance of the mixture and the synergism among the components can be comprehensively represented, and a scientific basis is provided for mixture ratio optimization and process parameter adjustment in the sintering process.

Description

Technical Field

[0001] The invention relates to the technical field of sintering technology, in particular to a method for evaluating the matching of mixed materials based on the integral area of ​​furnace material deformation rate. Background Art

[0002] Sintering process is an extremely important link in the steel production process. Its quality and efficiency directly affect the smooth operation of blast furnace ironmaking and the performance of the final product. In the sintering process, the assimilation performance of the mixture is a key factor in determining the strength, permeability and yield of the sintered ore. The assimilation performance of the mixture depends on the matching of its components under high temperature conditions, that is, the synergistic effect and reaction characteristics of different components during the sintering process.

[0003] In the prior art, the research on the matching of mixtures mainly focuses on the static analysis of chemical composition, or the evaluation of some key parameters through single-point physical property testing. However, this static method cannot fully reflect the physical and chemical changes of the mixture during the dynamic heating process. Especially in the actual sintering process, the reaction rate, liquid phase generation and melting characteristics of different components in the heating stage have a significant impact on the overall performance of the mixture. It is difficult to reveal its dynamic behavior at high temperature and the synergy between components by relying solely on single-point testing. In addition, the prior art lacks a dynamic monitoring method, and it is difficult to obtain continuous deformation data of the mixture at different temperature stages, which makes the evaluation of the matching of the mixture incomplete and inaccurate.

[0004] In response to the above problems, existing studies have attempted to introduce the concept of curve analysis, such as exploring the dynamic response characteristics of the mixture through the relationship between temperature and deformation rate. However, these methods have not yet been systematically applied and cannot provide direct guidance for actual production. At the same time, the experimental method lacks accurate quantitative tools for multi-component matching, resulting in insufficient basis for optimizing the mixture ratio, and it is difficult to improve the stability and efficiency of the sintering process. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a method for evaluating the matching of mixtures based on the integrated area of ​​the furnace charge deformation rate, which solves the problem in the prior art that the matching of mixture components cannot be evaluated dynamically and accurately.

[0006] To achieve the above objectives, the present invention is implemented by the following technical scheme: A method for evaluating the matching of mixed materials based on the integral area of ​​the furnace charge deformation rate comprises the following steps:

[0007] Prepare the mixture test sample into samples of set specifications;

[0008] The sample is placed in an experimental device and heated at a set heating rate in a controllable heating environment;

[0009] The deformation behavior of the sample during the heating process is monitored in real time by the deformation rate sensor, and the temperature and deformation rate data are collected to generate a temperature-deformation rate curve;

[0010] Based on the temperature-deformation rate curve, the area under the curve is calculated by integration to obtain the temperature-deformation rate integral area;

[0011] The integrated area is compared with an ideal reference value to evaluate the matching of the mixture.

[0012] Preferably, the sample preparation includes:

[0013] Dry the mixture and grind it to a set particle size;

[0014] The components are mixed in a predetermined proportion and the mixture is pressed into small cake samples of fixed size using a dry powder pressing method.

[0015] Preferably, the heating rate of the controllable heating environment is 5-20° C. / minute, and the heating process is carried out under set gas flow conditions.

[0016] Preferably, the calculation formula of the deformation rate is:

[0017]

[0018] Where ε(T) is the deformation rate at temperature T, V0 is the initial volume of the sample, V T is the volume of the sample at temperature T.

[0019] Preferably, the temperature-deformation rate integral area is calculated as follows:

[0020]

[0021] Where T1 is the assimilation start temperature, T2 is the final experimental temperature, and ε(T) is the deformation rate at temperature T.

[0022] Preferably, the evaluation of the compatibility of the mixture includes:

[0023] The temperature-deformation rate integrated area is compared with the integrated area of ​​an ideal reference sample;

[0024] When the area deviation is less than the set threshold, the matching is judged to be good;

[0025] When the area deviation is greater than the set threshold, it is determined that there is a component mismatch problem in the mixture, and the mixture composition or process parameters are adjusted accordingly.

[0026] The present invention also provides a device for evaluating the matching of mixed materials based on the integral area of ​​the furnace charge deformation rate, comprising:

[0027] High temperature furnace, used to provide a controlled temperature rise environment;

[0028] Deformation rate sensor, used to monitor the deformation behavior of the specimen in real time and collect temperature and deformation rate data;

[0029] Data acquisition and processing module, used to record and process deformation rate data, generate temperature-deformation rate curve and calculate integrated area;

[0030] The display and output module is used to output the temperature-deformation rate curve and matching evaluation results.

[0031] Preferably, the high temperature furnace comprises:

[0032] Corundum tubes, used to provide high temperature protection and gas isolation;

[0033] The heating body is distributed around the corundum tube to produce a uniform heating environment;

[0034] The corundum sheet substrate is located inside the high-temperature furnace to support the sample and prevent test errors caused by high-temperature deformation;

[0035] Thermocouples are installed inside the corundum tube to monitor the temperature changes in the furnace in real time.

[0036] The invention provides a method for evaluating the matching of mixed materials based on the integral area of ​​furnace charge deformation rate.

[0037] It has the following beneficial effects:

[0038] 1. The present invention quantifies the dynamic reaction performance of the mixture by real-time monitoring of the deformation behavior of the mixture during the heating process and combining the integral area calculation of the temperature-deformation rate curve. Compared with the traditional single-point test method, it can comprehensively characterize the synergy and assimilation performance of the mixture at different temperature stages. This method improves the scientificity and accuracy of matching evaluation and provides a reliable basis for mixture optimization.

[0039] 2. The present invention accurately diagnoses the reaction performance problems of each component in the mixture through the matching evaluation results, such as insufficient or excessive liquid phase generation. Based on the integrated area deviation analysis, targeted optimization schemes can be proposed, such as adjusting the flux ratio or changing the iron ore powder composition. The optimized mixture ratio significantly improves the quality of sintered ore and improves the stability and efficiency of the sintering process.

[0040] 3. The present invention uses high-precision thermocouples and volume shrinkage rate identifiers to achieve real-time monitoring and automatic collection of temperature and deformation data. Through the curve generation and integral calculation functions of the data processing module, the experimental process is fully automated, reducing errors caused by human intervention. The experimental results have good repeatability, providing stable and reliable experimental data support for subsequent process parameter adjustments. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the method flow of the present invention;

[0042] Figure 2 It is a schematic diagram of the structure of the experimental device of the present invention. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Please see attached Figure 1 -Attached Figure 2 The present invention provides a method for evaluating the matching of a mixture based on the integral area of ​​the charge deformation rate. By monitoring the dynamic deformation behavior of the mixture sample during the heating process and calculating the integral area of ​​the temperature-deformation rate curve, the matching of the mixture is comprehensively evaluated to guide the optimization of the mixture ratio and the adjustment of the sintering process.

[0045] like Figure 2 As shown, the method of the present invention relies on a specific experimental device, which includes a thermocouple, a volume shrinkage rate identifier, a corundum tube, a heating body, a sample, a computer and a control cabinet, and is used to monitor the dynamic deformation behavior of the mixture during the heating process in real time, and to collect, process and output the experimental data. The details are as follows:

[0046] The core part of this experimental device is a high-temperature furnace, which mainly includes a corundum tube 3 and a heating body 4. As the lining material of the furnace body, the corundum tube has good high-temperature resistance and chemical stability, can provide a uniform heating environment, and avoid direct contact between the sample and the heating body, ensuring the stability and repeatability of the experimental conditions. A substrate for placing the sample is provided inside the corundum tube. The substrate is a high-purity corundum sheet, which provides support for the sample and avoids contamination or uneven heat distribution caused by direct contact with the heating component.

[0047] The heating body 4 is evenly distributed around the outside of the corundum tube, and uses an electric heating element to achieve a set heating rate by controlling the heating power. In this embodiment, the heating body is made of a high-temperature alloy material, the maximum heating temperature can reach 1500°C, and the set heating rate (such as 10°C / minute) can be stably maintained until the end of the experiment, thereby simulating the thermal behavior of the mixture during the sintering process.

[0048] Thermocouple 1 is installed inside the corundum tube near the sample to monitor the temperature change inside the high-temperature furnace in real time. The thermocouple has high sensitivity and high heat resistance, can accurately sense the sample ambient temperature, and transmit the temperature signal to the data acquisition module in the control cabinet to achieve accurate temperature control and recording.

[0049] The volume shrinkage rate identifiers 2 and 6 are the core monitoring components of the device, which are installed above the sample and maintain good contact with the sample surface. The identifier is used to capture the deformation of the sample in real time during the heating process and record the dynamic changes of the deformation at a high frequency. The probe of the identifier is made of high-temperature resistant ceramic material, which can work stably in a high-temperature environment for a long time, and ensure the accuracy and stability of data collection through direct contact with the sample.

[0050] Computer 7 is connected to control cabinet 8 as a data processing and display module, and is used to receive and analyze data transmitted from thermocouples and volume shrinkage rate identifiers. The data processing module has a built-in temperature-deformation rate curve generation algorithm and a numerical integration program, which can draw the temperature-deformation rate curve in real time and obtain the matching index (integral area) of the mixture by calculating the area under the curve. In addition, the computer module also has display and output functions, which can intuitively display the experimental results in graphical and numerical forms, and provide data support for the matching evaluation and optimization of the mixture.

[0051] The control cabinet 8 is the overall control unit of the experimental device, connected to the heating body, thermocouple and volume shrinkage rate identifier, and is used to adjust the heating rate of the high-temperature furnace and coordinate the data collection and processing process. The control cabinet sets the heating curve through programming and is linked with the computer to realize the automatic control of the entire experimental process.

[0052] Sample 5 is a sample prepared according to the present invention and placed on a corundum sheet substrate in a high-temperature furnace. The sample is in the shape of a small round cake with a diameter of 12 mm, and its initial volume is used as the basis for calculating the volume shrinkage rate.

[0053] like Figure 1 As shown, the method for evaluating the matching of mixed materials based on the integral area of ​​the furnace charge deformation rate may include the following steps:

[0054] S1. Preparation of mixed material samples;

[0055] S2. Setting of sample heating environment;

[0056] S3, real-time monitoring of specimen deformation behavior;

[0057] S4, temperature-deformation rate integral area calculation;

[0058] S5. Matching evaluation and optimization.

[0059] Each step of the method of the present invention is described in detail below.

[0060] Regarding step S1, in this embodiment, the preparation of the mixture sample is a prerequisite step for evaluating the compatibility of the mixture, and its purpose is to ensure the uniformity, stability and reproducibility of the sample in subsequent experiments. To this end, the following operation process is adopted in the specific implementation.

[0061] In this embodiment, the iron ore powder used in the test is dried in a constant temperature drying oven at 110°C for 3 hours to remove moisture and other volatile components in the raw material. The dried iron ore powder needs to be sieved for particle size, and powder with a particle size less than 100 mesh is selected as the experimental raw material to ensure the refinement and uniformity of the sample particles, thereby meeting the experimental requirements of high temperature deformation monitoring.

[0062] During the preparation of the mixture, the raw materials, including iron ore concentrate and flux, are weighed according to a predetermined sintering ratio. The flux can be selected from limestone, dolomite or other materials with fluxing function. The specific amount of flux is adjusted according to the chemical composition of the iron ore concentrate and the expected demand for the generation of liquid phase to ensure the suitability of the liquid phase generation during the experiment. In this embodiment, the weighed iron ore concentrate and flux are added to the mixing equipment and fully mixed by mechanical mixing to make the components of the mixture evenly distributed, avoiding experimental errors caused by uneven mixing.

[0063] The mixed material is accurately weighed by an electronic balance after being mixed evenly, and the weight of each sample is 2 grams to ensure the repeatability of the sample in the experiment. The weighed mixture is formed by a dry powder pressing process, specifically, the mixture is pressed into a small round cake-shaped sample by a mold under a pressure of 15MPa. The pressing time is set to 2 minutes to ensure the density and mechanical strength of the sample, thereby avoiding cracking or uneven deformation during the high temperature experiment.

[0064] The sample after compression molding has a small round cake shape with a diameter of 10 to 15 mm and a thickness of 2 to 3 mm. The sample surface should be smooth and flat, with no defects on the edges. In this embodiment, the compressed sample is stored in a dry environment to prevent it from getting wet during storage or transportation, thereby ensuring that its physical properties remain consistent before and after the experiment.

[0065] During the preparation process, in order to ensure the accuracy and consistency of the samples, the operation needs to be repeated many times until the shape, specifications and quality of all samples meet the experimental requirements. The prepared samples serve as the basic materials for subsequent temperature rise experiments to ensure that they can truly reflect the dynamic deformation behavior of the mixture under high temperature environment.

[0066] For step S2, in this embodiment, the mixed material sample is placed in an experimental device and heated at a set heating rate in a controllable heating environment. The experimental device includes a high-temperature furnace, a corundum sheet substrate, and an atmosphere control system. The specific experimental conditions are designed and controlled as follows.

[0067] In this embodiment, the high temperature furnace used has a precise temperature control function, and its heating rate and maximum temperature can be set according to the experimental needs. The small round cake-shaped sample prepared in step S1 is placed on the corundum sheet substrate of the high temperature furnace. The corundum sheet substrate material is a high temperature resistant, low thermal expansion coefficient corundum ceramic, which provides a stable bearing environment for the sample and avoids uneven heating or contamination of the sample due to direct contact with the furnace body.

[0068] The heating rate of the high temperature furnace is set at 5-20℃ / min. The automatic temperature control system of the high temperature furnace ensures that the temperature change curve during the heating process meets the experimental requirements. Specifically, the high temperature furnace starts heating from room temperature and evenly heats to 1200-1400℃ at the set rate to simulate the thermal behavior of the mixture during sintering.

[0069] In the experimental environment, the atmosphere conditions inside the high-temperature furnace are adjusted by the atmosphere control system. In this embodiment, air is used as the experimental atmosphere, and the air flow rate is set to 3L / min. Air is continuously introduced into the high-temperature furnace to ensure that the oxidation conditions in the experimental environment are uniform and stable. The air flow rate is controlled by a precision flow meter to ensure the accuracy and stability of the ventilation rate and avoid fluctuations in the experimental results caused by changes in the atmosphere.

[0070] In order to ensure the uniformity of heating of the sample during the heating process, the high-temperature furnace is equipped with a high-precision thermocouple for real-time monitoring of the temperature in the furnace. The thermocouple is installed in the center of the high-temperature furnace, close to the sample, and can accurately record the temperature changes during the heating process. By linking with the high-temperature furnace control system, the power output of the heating body is adjusted in real time to ensure that the temperature curve of the entire heating process is consistent with the set parameters.

[0071] In this embodiment, the sample remains stationary during the heating process to avoid experimental errors caused by sample movement or tilting. The thermal stability of the corundum substrate and the precise control of the high-temperature furnace combine to ensure that the physical state of the sample during the heating process can truly reflect the thermal behavior characteristics of the mixture.

[0072] For step S3, in this embodiment, the dynamic deformation behavior of the sample during the heating process is monitored in real time by a deformation rate sensor, temperature and deformation rate data are collected, and a temperature-deformation rate curve is generated to facilitate subsequent analysis of the assimilation performance and matching of the mixture.

[0073] In this embodiment, the deformation rate sensor is a high-precision contact sensor, which is installed above the sample, and the sensor head maintains good contact with the sample surface. The sensor can accurately capture the tiny deformation of the sample caused by heating during the heating process, has high sensitivity and high resolution, and is suitable for real-time monitoring of dynamic deformation behavior.

[0074] To ensure the accuracy and stability of the collected data, the deformation rate sensor is fixed inside the high-temperature furnace through a supporting structure. The sensor installation position is centered relative to the sample to avoid data errors caused by poor contact or offset between the sensor and the sample. The high-temperature resistant part of the sensor is made of ceramic material and can work for a long time in an environment up to 1350°C.

[0075] In this embodiment, the collection frequency of deformation rate data is set to once per second to ensure that sufficiently dense deformation data points can be obtained during the heating process. At the same time, the sensor is also synchronously connected to the temperature monitoring system of the high-temperature furnace to record the temperature in the furnace at each moment, so that the deformation rate data corresponds to the temperature data one by one, providing complete data support for subsequent curve drawing and integral calculation.

[0076] The calculation of deformation rate is based on the volume change of the sample, and its formula is:

[0077]

[0078] Where ε(T) is the deformation rate at temperature T, V0 is the initial volume of the sample, V T is the volume of the sample at temperature T. The deformation of the sample is measured in real time by the sensor, and combined with the initial shape and size of the sample, the data processing module can accurately calculate the deformation rate at each temperature point.

[0079] The collected deformation rate data and the corresponding temperature data are transmitted to the data acquisition and processing module in real time. This module preprocesses the data, including data calibration, denoising and outlier removal, to ensure the authenticity and availability of the data. Subsequently, the processed data points are plotted into a temperature-deformation rate curve, with the horizontal axis of the curve being temperature and the vertical axis being deformation rate, to intuitively display the dynamic deformation behavior of the sample at different temperatures.

[0080] The temperature-deformation rate curve in this embodiment can fully reflect the assimilation behavior characteristics of the mixture during the heating process. For example, in the low temperature zone, the curve changes little, indicating that the physical deformation of the sample is weak; as the temperature rises, the curve shows a clear upward trend, reflecting that the mixture components begin to react in the liquid phase and produce deformation. The shape and change trend of the curve can provide an important reference for subsequent analysis.

[0081] For step S4, in this embodiment, based on the temperature-deformation rate data obtained by the above monitoring, the area under the temperature-deformation rate curve is calculated by integration to obtain the key indicator reflecting the comprehensive reaction performance of the mixture during the heating process - the temperature-deformation rate integral area. The purpose of this step is to quantify the dynamic temperature and deformation relationship into a single value, so as to be used for the subsequent mixture matching analysis.

[0082] In this embodiment, the calculation of the integral area is based on the temperature-deformation rate curve, where the horizontal axis of the curve is temperature and the vertical axis is deformation rate, representing the deformation behavior of the sample under different temperature conditions. The range of the curve is determined by the assimilation start temperature (T1) to the highest experimental temperature (T2, 1350°C). The area under the temperature-deformation rate curve is calculated by the numerical integration method, and the integral formula is as follows:

[0083]

[0084] in:

[0085] A: Temperature-deformation rate integrated area, reflecting the overall reaction performance of the mixture;

[0086] T1: assimilation starting temperature;

[0087] T2: the highest experimental temperature of the sample;

[0088] ε(T): deformation rate of the specimen at temperature T.

[0089] In this embodiment, the data points of the temperature-deformation rate curve are recorded in real time by the data acquisition module, including the deformation rate corresponding to each temperature. The integral calculation adopts the trapezoidal method for numerical processing, and the temperature range is divided into several small segments. The trapezoidal area of ​​each segment is calculated and then accumulated to obtain the area value under the overall curve. The specific calculation steps are automatically completed by the built-in algorithm in the data processing module, with high calculation accuracy and avoiding manual errors.

[0090] In order to ensure the accuracy of the integral results, the data processing module first calibrates and denoises the data of the temperature-deformation rate curve before performing the integral calculation. The calibration part includes the correction of experimental conditions and the compensation of sensor acquisition errors; the denoising part removes random interference data points in the experiment through a filtering algorithm to ensure the smoothness and continuity of the curve.

[0091] The size of the integrated area directly reflects the comprehensive deformation behavior and reaction performance of the mixture during the heating process. Specifically, the larger the integrated area, the more significant the deformation of the mixture components during the heating process, which may generate more liquid phases or undergo more complete reactions; the smaller the integrated area, the weaker the reaction of the mixture, and its assimilation performance may be insufficient. Therefore, the temperature-deformation rate integrated area, as a comprehensive indicator, provides a quantitative basis for evaluating the matching of the mixture.

[0092] In this embodiment, the calculation result of the integrated area is output in numerical form and serves as basic data for subsequent matching analysis.

[0093] For step S5, in this embodiment, the temperature-deformation rate integral area obtained by integral calculation is compared with the standard integral area of ​​the ideal reference sample to evaluate the matching of the mixture. Through this analysis method, the assimilation performance problems of the mixture components can be identified and a scientific basis can be provided for optimizing the proportion.

[0094] In this embodiment, the standard integral area of ​​the ideal reference sample is obtained based on long-term experimental data and theoretical calculations as a benchmark value for the matching of the mixture. When comparing the integral area of ​​the sample with the standard value, the relative deviation of the area size is mainly considered, and the direction and degree of the deviation can reflect the performance difference of the mixture.

[0095] When the integrated area is close to the reference value, it means that the components of the mixture have good matching during the heating process, can generate sufficient liquid phase in the appropriate temperature range and form a strong binding force, and the sintering process can obtain higher product quality and permeability.

[0096] If the integrated area is significantly smaller than the reference value, it indicates that the deformation reaction of the mixture during the heating process is weak, which may be due to insufficient flux or low reactivity of some iron ore powder components, which fails to generate enough liquid phase and leads to insufficient assimilation performance. In this case, it can be adjusted by increasing the flux dosage or optimizing the ore component ratio.

[0097] If the integrated area is significantly larger than the reference value, it indicates that the mixture generates too much liquid phase, which may lead to excessive bonding, thus affecting the permeability and structural uniformity of the sintered ore. In this case, it is necessary to appropriately reduce the amount of flux or adjust the proportion of highly reactive components in the ore to reduce the amount of liquid phase generated.

[0098] In this embodiment, the specific problems existing in the matching of the mixture can be accurately diagnosed through the quantitative analysis of the integral area deviation, which provides a scientific basis for optimizing the mixture ratio and can further guide the improvement of the flux and iron ore powder formula in production, thereby improving the stability of the sintering process and product performance.

[0099] In order to ensure the accuracy of the analysis results, the matching evaluation method in this embodiment repeatedly tests the experimental data. Specifically, the experimental process of each sample is repeated at least 3 times, and the average value of the integrated area of ​​each time is taken as the final evaluation index to eliminate the error that may be caused by fluctuations in experimental conditions.

[0100] In addition, this embodiment also performs auxiliary analysis based on the changing trend of the integrated area and the shape characteristics of the temperature-deformation rate curve. For example, if the curve changes slowly in the medium temperature stage and rises abnormally sharply in the high temperature stage, it may reflect that some components over-react in the high temperature zone, and the heating rate or component ratio of the mixture needs to be further adjusted.

[0101] Through the above method, this embodiment can achieve a comprehensive evaluation of the matching of the mixture, not only providing a quantitative matching index, but also clarifying the optimization direction of the mixture through area deviation analysis.

[0102] In general, the present invention generates a temperature-deformation rate curve by real-time monitoring of the deformation behavior of the mixture during the heating process, and calculates the area under the curve by integration to quantify the assimilation performance of the mixture. This method accurately evaluates the matching of the mixture, diagnoses the synergy problems between components, and proposes an optimization plan based on the comparison of the integrated area with the standard value of the ideal reference sample.

[0103] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for evaluating the matching of mixed materials based on the integral area of ​​the charge deformation rate, characterized in that: The following steps are involved: Prepare the mixture test sample into samples of set specifications; The sample is placed in an experimental device and heated at a set heating rate in a controllable heating environment; The deformation behavior of the sample during the heating process is monitored in real time by the deformation rate sensor, and the temperature and deformation rate data are collected to generate a temperature-deformation rate curve; Based on the temperature-deformation rate curve, the area under the curve is calculated by integration to obtain the temperature-deformation rate integral area; The integrated area is compared with an ideal reference value to evaluate the matching of the mixture.

2. The method for evaluating the matching of mixed materials based on the integral area of ​​the charge deformation rate according to claim 1, characterized in that: The sample preparation includes: Dry the mixture and grind it to a set particle size; The components are mixed in a predetermined proportion and the mixture is pressed into small cake samples of fixed size using a dry powder pressing method.

3. The method for evaluating the matching of mixed materials based on the integral area of ​​the charge deformation rate according to claim 1, characterized in that: The heating rate of the controllable heating environment is 5-20°C / minute, and the heating process is carried out under set gas flow conditions.

4. The method for evaluating the matching of mixed materials based on the integral area of ​​charge deformation rate according to claim 1, characterized in that: The calculation formula of the deformation rate is: Where ε(T) is the deformation rate at temperature T, V0 is the initial volume of the sample, V T is the volume of the sample at temperature T.

5. The method for evaluating the matching of mixed materials based on the integral area of ​​the charge deformation rate according to claim 4, characterized in that: The calculation formula of the temperature-deformation rate integral area is: Where T1 is the assimilation start temperature, T2 is the final experimental temperature, and ε(T) is the deformation rate at temperature T.

6. The method for evaluating the matching of mixed materials based on the integral area of ​​charge deformation rate according to claim 1, characterized in that: The evaluation of the compatibility of the mixture includes: The temperature-deformation rate integrated area is compared with the integrated area of ​​an ideal reference sample; When the area deviation is less than the set threshold, the matching is judged to be good; When the area deviation is greater than the set threshold, it is determined that there is a component mismatch problem in the mixture, and the mixture composition or process parameters are adjusted accordingly.

7. A device for evaluating the matching of mixed materials based on the integral area of ​​furnace charge deformation rate, used for implementing the method for evaluating the matching of mixed materials based on the integral area of ​​furnace charge deformation rate as claimed in any one of claims 1 to 6, characterized in that: include: High temperature furnace, used to provide a controlled temperature rise environment; Deformation rate sensor, used to monitor the deformation behavior of the specimen in real time and collect temperature and deformation rate data; Data acquisition and processing module, used to record and process deformation rate data, generate temperature-deformation rate curve and calculate integrated area; The display and output module is used to output the temperature-deformation rate curve and matching evaluation results.

8. The device for evaluating the matching of mixed materials based on the integral area of ​​the charge deformation rate according to claim 7, characterized in that: The high temperature furnace comprises: Corundum tubes, used to provide high temperature protection and gas isolation; The heating body is distributed around the corundum tube to produce a uniform heating environment; The corundum sheet substrate is located inside the high-temperature furnace to support the sample and prevent test errors caused by high-temperature deformation; Thermocouples are installed inside the corundum tube to monitor the temperature changes in the furnace in real time.

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