Heat treatment furnace, temperature control method and storage medium thereof

Abstract

The invention relates to the field of heat treatment, in particular to a heat treatment furnace, a temperature control method and a storage medium thereof.The heat treatment furnace comprises a high-temperature furnace body, at least two silicon controlled rectifier adjusting circuits, at least two thermocouples and an input display module; the multiple thermocouples are correspondingly controlled by the different silicon controlled rectifier adjusting circuits, and at least one of the multiple thermocouples receives preset adjusting signals output by the silicon controlled rectifier adjusting circuits so as to adjust the temperature in the high-temperature furnace body. At least one of the plurality of thermocouples is used for detecting the temperature in the high-temperature furnace body, obtaining detected temperature data and outputting the detected temperature data to the silicon controlled rectifier adjusting circuit, and the input display module is used for a user to input the adjusting signal and display the detected temperature data for the user to check. The temperature control method has the effect of improving the temperature control precision.

Description

Technical Field

[0001] The present application relates to the field of heat treatment, and in particular to a heat treatment furnace, a temperature control method and a storage medium thereof. Background Art

[0002] With the development and popularization of science and technology, memory metals are becoming more and more common in people's lives, such as springs, satellites, etc., and the memory function of memory metals is often related to temperature, such as high-temperature reduction, that is, memory metals undergo reduction under high temperature conditions. However, the temperature control accuracy of existing heat treatment furnaces is low, and the temperature fluctuation is large, which makes it difficult to meet the requirements of memory metal reduction. Summary of the invention

[0003] In order to improve the problems of low temperature control accuracy and large temperature fluctuation in existing heat treatment furnaces, the present application provides a heat treatment furnace, a temperature control method and a storage medium thereof.

[0004] The present application provides a heat treatment furnace, which adopts the following technical solution: A heat treatment furnace comprises a high-temperature furnace body, a thyristor regulation circuit, a thermocouple and an input display module, wherein the number of the thermocouple and the thyristor regulation circuit are at least two, and a plurality of the thermocouples respectively receive control corresponding to different thyristor regulation circuits, at least one of the plurality of thermocouples receives a preset adjustment signal output by the thyristor regulation circuit to adjust the temperature in the high-temperature furnace body, and at least one of the plurality of thermocouples is used to detect the temperature in the high-temperature furnace body, and the detected temperature data is output to the thyristor regulation circuit, and the input display module is used for a user to input the adjustment signal and display the detected temperature data for the user to view.

[0005] By adopting the above technical solution, temperature detection and temperature adjustment are performed respectively through different thermocouples, which greatly improves the temperature control accuracy.

[0006] Optionally, a flipping driving member is provided on the high-temperature furnace body, a rotating shaft of the flipping driving member extends into the high-temperature furnace body, and a flipping blade for flipping materials is provided on the rotating shaft of the flipping driving member.

[0007] By adopting the above technical solution, the materials in the high-temperature furnace body are turned over to increase convection and ensure that the materials are heated evenly.

[0008] Optionally, the inner wall of the high-temperature furnace is covered with a stainless steel liner.

[0009] By adopting the above technical solution, a protective effect is achieved to prevent oxidation.

[0010] The present application provides a temperature control method for a heat treatment furnace, which adopts the following technical solution: A temperature control method for a heat treatment furnace, comprising: Acquiring the detected temperature data; Determine temperature adjustment data by using the detected temperature data and a preset heat treatment temperature threshold; The adjustment signal is determined and outputted according to the temperature adjustment data and a preset temperature adjustment threshold.

[0011] By adopting the above technical solution, the temperature can be automatically adjusted to a temperature condition sufficient to meet the material reduction requirements of the memory metal, which is convenient, fast and efficient.

[0012] Optional, including: Acquire timing data, wherein the number of the detected temperature data acquired is multiple; Determine a temperature deviation value through a plurality of the detected temperature data; Determining temperature unevenness coordinate data by using the temperature deviation value, the timing data and a preset temperature measurement coordinate threshold; A flip signal is determined and outputted according to the temperature unevenness coordinate data, a preset temperature unevenness threshold, the adjustment signal and a preset flipping threshold.

[0013] By adopting the above technical solution, when uneven temperature occurs in the high-temperature furnace body, the temperature or turning speed is automatically adjusted to achieve uniform temperature, ensure uniform heating of the material, and improve the processing effect.

[0014] Optional, including: Determine the temperature rise breakthrough data by using the flip signal, the adjustment signal, the original temperature unevenness coordinate data, the new temperature unevenness coordinate data and a preset test temperature rise threshold value; Determine the new adjustment signal through the temperature rise breakthrough data and the temperature unevenness coordinate data and output it; Acquire the temperature unevenness coordinate data again, and determine correction data by using the new temperature unevenness coordinate data and the original temperature unevenness coordinate data; Determine the test temperature rise data by using the temperature unevenness coordinate data, the correction data, the heat treatment temperature threshold and a preset variable coefficient; A new adjustment signal is determined and outputted by replacing the temperature rise breakthrough data with the test temperature rise data until the temperature unevenness coordinate data is within the range of the temperature unevenness threshold value.

[0015] By adopting the above technical solution, the adjustment of heating uniformity is made more precise.

[0016] Optional, including: Get energy saving mode signal; Determine low energy consumption data through the test temperature rise data, the flipping signal, a preset heating energy consumption threshold and a preset flipping energy consumption threshold; Determine a new flip signal or new test temperature rise data through the low energy consumption data, the flip signal and the test temperature rise data; A new flip signal or new test temperature rise data is determined by the low energy consumption data, the test temperature rise data, the flip signal and a preset switching threshold.

[0017] By adopting the above technical solution, the energy consumption of the heating adjustment process is lowered, thus saving energy.

[0018] The present application provides a computer-readable storage medium, which adopts the following technical solution: A computer-readable storage medium stores a computer program capable of being loaded by a processor and executed by a temperature control method of a heat treatment furnace.

[0019] By adopting the above technical solution, the computer program is stored in a computer-readable storage medium.

[0020] In summary, the present application includes at least one of the following beneficial technical effects: 1. Greatly improved the temperature control accuracy.

[0021] 2. Ensure that the material is heated evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a heat treatment furnace in Example 1 of the present application.

[0023] Figure 2 It is a flow chart of a temperature control method for a heat treatment furnace in Example 2 of the present application.

[0024] Figure 3 It is a flowchart diagram of step S2 to step S23.

[0025] Figure 4 It is a flowchart diagram of step S3 to step S34.

[0026] Figure 5 It is a flowchart diagram of step S4 to step S43.

[0027] Explanation of the reference numerals: 1. high-temperature furnace body; 11. flip driving member; 12. flip blade; 2. thyristor regulating circuit; 3. thermocouple; 4. input display module. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-5 This application is described in further detail.

[0029] Embodiment 1 of the present application discloses a heat treatment furnace. Figure 1 The heat treatment furnace includes a high-temperature furnace body 1, a thyristor regulating circuit 2, a thermocouple 3 and an input display module 4. The number of thermocouples 3 and thyristor regulating circuit 2 is at least two. Among the multiple thermocouples 3, at least one thermocouple 3 uses a device with a temperature measurement function such as a thermistor to detect the temperature in the high-temperature furnace body 1, and obtains the detected temperature data and outputs it to the thyristor regulating circuit 2; and at least one thermocouple 3 uses a device with a temperature adjustment function such as a resistance wire to receive a preset adjustment signal output by the thyristor regulating circuit 2 to adjust the temperature in the high-temperature furnace body 1. The temperature collection end or the temperature control end of the thermocouple 3 is in the high-temperature furnace body 1. The multiple thermocouples 3 receive control corresponding to different thyristor regulating circuits 2, that is, the thyristor regulating circuit 2 and the thermocouple 3 are in one-to-one correspondence for control.

[0030] Reference Figure 1 The input display module 4 can use a digital display device, such as a combination of a display screen and a keyboard, or directly use a touch screen. The input display module 4 is used for the user to input an adjustment signal to the thyristor adjustment circuit 2, and at the same time display the detected temperature data for the user to view. The thyristor adjustment circuit 2 or the input display module 4 includes at least one processor and a database. The database is used to store various threshold data, such as temperature adjustment threshold, heat treatment temperature threshold and other threshold data. The processor receives the detected temperature data and the energy-saving mode signal, and calls the corresponding threshold data from the database, performs data calculations and outputs the adjustment signal.

[0031] The processor may include a central processing unit such as a CPU or MPU or a host system built around a CPU or MPU, including hardware or software. After the meter has a processor, people can freely control the metering instrument through programming to make it run according to people's wishes. The processor can control local measurement transmission, remote measurement transmission, remote communication, etc. through internal protocols. Internal protocols refer to all protocols that achieve mutual communication or links within the same metering instrument or the same system, including: human-computer interaction protocols, software / hardware (interface) protocols, chip bus (C-Bus) protocols, internal bus (I-Bus) protocols, etc. Part or all of the protocols. With the development of integrated circuit technology, some protocols that belong to the external bus (E-Bus) protocol are also classified as internal protocols after the external bus (E-Bus) is integrated into the chip.

[0032] Reference Figure 1A turning drive member 11 is fixedly connected to the high temperature furnace body 1. The turning drive member 11 is a high temperature resistant motor. The rotating shaft of the turning drive member 11 penetrates the side wall of the high temperature furnace body 1 and extends into the high temperature furnace body 1. A turning blade 12 for turning the material is fixedly connected to the rotating shaft of the turning drive member 11 in the high temperature furnace body 1 to turn the material in the high temperature furnace body 1. The inner wall of the high temperature furnace body 1 is covered with a stainless steel liner 13. The high temperature furnace body 1 is filled with an inert gas, such as argon, to prevent oxidation of the material.

[0033] The implementation principle of a heat treatment furnace in Example 1 of the present application is: temperature detection is performed through at least one thermocouple 3 to obtain detected temperature data, which is displayed to the user through the thyristor adjustment circuit 2 and the input display module 4; then, an adjustment signal is output to other thermocouples 3 through the thyristor adjustment circuit 2, and temperature adjustment control is performed through other thermocouples 3. At the same time, a flipping signal is output to control the rotation shaft of the flipping drive member 11 to flip the material.

[0034] Embodiment 2: Example 2 of the present application discloses a temperature control method for a heat treatment furnace. Figure 2 , the temperature control method of the heat treatment furnace includes the following steps: S1. Obtaining detected temperature data; S11, determining temperature adjustment data by detecting temperature data and a preset heat treatment temperature threshold; S12, determining an adjustment signal based on the temperature adjustment data and a preset temperature adjustment threshold and outputting the signal.

[0035] In detail: the detected temperature data is obtained by collecting the temperature in the high-temperature furnace body 1 by the electric thermocouple 3 with temperature detection function. The heat treatment temperature threshold is the temperature that theoretically meets the reduction requirements for the memory metal material. The collected detected temperature data is compared with the heat treatment temperature threshold. If the detected temperature data meets the requirements of the heat treatment temperature threshold, it means that the temperature in the high-temperature furnace body 1 meets the reduction processing conditions of the material, and no additional adjustment is required; if the detected temperature data does not meet the requirements of the heat treatment temperature threshold, it means that the temperature in the high-temperature furnace body 1 does not meet the reduction processing conditions of the material. At this time, the material in the high-temperature furnace body 1 will not be able to be fully reduced, so It is necessary to increase the temperature in the high-temperature furnace body 1 to the heat treatment temperature threshold, and the difference between the detected temperature data and the heat treatment temperature threshold is the temperature data that needs to be increased, that is, the temperature adjustment data; the temperature adjustment threshold is the corresponding relationship between the working power and temperature of the thermocouple 3 with temperature adjustment function. For example, 100W power generates heat at a rate a, and 1000W power generates heat at a rate b. Although 1000W is ten times 100W, b is not 10 times a. The relationship between them is the temperature adjustment threshold. By associating the temperature adjustment data with the temperature adjustment threshold, you can get how much the current, voltage and power need to be adjusted, which is the adjustment signal.

[0036] Reference Figure 3 , further comprising the following steps: S2, obtaining timing data, wherein the number of detected temperature data obtained is multiple; S21, determining a temperature deviation value through a plurality of detected temperature data; S22, determining temperature unevenness coordinate data through the temperature deviation value, the timing data and a preset temperature measurement coordinate threshold; S23, determining and outputting a flip signal according to the temperature unevenness coordinate data, the preset temperature unevenness threshold, the adjustment signal and the preset flipping threshold.

[0037] In detail: multiple detected temperature data are obtained by the thermocouple 3 at different positions, and according to the timing data, the detected temperature data obtained by the thermocouple 3 at adjacent positions at the same time are compared and added and subtracted to obtain the difference, which is the temperature deviation value; the temperature measurement coordinate threshold is the coordinate position of the thermocouple 3 corresponding to each detected temperature data, and the coordinate of the position with the lowest temperature can be obtained by combining the temperature deviation value. For example, the temperature deviation value of the x1 coordinate is -2°C, the temperature deviation value of the x2 coordinate is -5°C, and the temperature deviation value of the x3 coordinate is -1°C, then the x2 coordinate is the temperature unevenness coordinate data, and the temperature unevenness threshold is the temperature value used to determine whether adjustment is needed. The threshold of the temperature deviation value, that is, when the temperature deviation value exceeds the range of the temperature unevenness threshold value, it means that the temperature here is too uneven, which will affect the heating of the material in the high-temperature furnace body 1 and needs to be adjusted. The flipping threshold is the degree of unevenness and the flipping power when correction is required. For example, if the temperature unevenness threshold is ±3°C, the temperature deviation value of the x2 coordinate is -5°C, then the temperature to be adjusted is 2°C. If the flipping threshold is set to a*C, a is the coefficient, C is the temperature that does not need to be adjusted, then the flipping signal that can be obtained at this time is 2a. When the temperature indicated by the adjustment signal is above the heat treatment temperature threshold, a flipping signal is output to flip to make the temperature more uniform.

[0038] Reference Figure 4 , further comprising the following steps: S3, determining the temperature rise breakthrough data by flipping the signal, adjusting the signal, the original temperature unevenness coordinate data, the new temperature unevenness coordinate data and the preset test temperature rise threshold value; S31, determining a new adjustment signal through the temperature rise breakthrough data and the temperature unevenness coordinate data and outputting it; S32, acquiring temperature unevenness coordinate data again, and determining correction data by using new temperature unevenness coordinate data and original temperature unevenness coordinate data; S33, determining the test temperature rise data through the temperature unevenness coordinate data, the correction data, the heat treatment temperature threshold and the preset variable coefficient; S34, determining a new adjustment signal by replacing the temperature rise breakthrough data with the test temperature rise data and outputting it until the temperature unevenness coordinate data is within the range of the temperature unevenness threshold value.

[0039] In detail: after adjustment is made using the original temperature unevenness coordinate data, new temperature unevenness coordinate data is detected again. If the temperature deviation value cannot be reduced only by flipping the signal, a temperature increase adjustment is required, that is, the electric thermocouple 3 with a heating function near the temperature unevenness coordinate data is heated. The temperature that is already within the heat treatment temperature threshold range will be higher than the heat treatment temperature threshold if it is increased again. This is the temperature rise breakthrough data, which usually indicates additional energy consumption. That is, when the temperature is at the heat treatment temperature threshold, the material can be restored. However, due to uneven heating, the temperature needs to be increased to exceed the heat treatment temperature threshold, which means that more electrical energy is consumed to achieve the restoration process. The temperature rise breakthrough data is combined with the temperature unevenness coordinate data to obtain an adjustment signal for heating the electric thermocouple 3 near the temperature unevenness coordinate data and output it for control. Then the temperature is obtained again. Take the temperature unevenness coordinate data, and obtain the correction data through the temperature deviation value in the temperature unevenness coordinate data this time and the temperature deviation value in the temperature unevenness coordinate data obtained last time. For example, the temperature deviation value this time is -4°C, and the temperature deviation value last time is -4.5°C, then the correction data can be 0.5°C, and then the detected temperature data in the temperature unevenness coordinate data is compared with the heat treatment temperature threshold to obtain the difference. By combining this difference with the correction data and the variable coefficient, it can be roughly estimated how much the temperature needs to be increased. Combined with the turning signal to turn the material, the temperature deviation value here can be corrected to within the range of the temperature unevenness threshold, or the detected temperature data here can be within the range of the heat treatment temperature threshold. This is the test temperature rise data, and then return to step S32 to repeat the steps until the temperature deviation value of the temperature unevenness coordinate data is within the range of the temperature unevenness threshold.

[0040] Reference Figure 5 , further comprising the following steps: S4, obtaining an energy-saving mode signal; S41, determining low energy consumption data by testing temperature rise data, a flipping signal, a preset heating energy consumption threshold, and a preset flipping energy consumption threshold; S42, determining a new flip signal or new test temperature rise data through the low energy consumption data, the flip signal, and the test temperature rise data; S43, determining a new flip signal or a new test temperature rise data through the low energy consumption data, the test temperature rise data, the flip signal and the preset switching threshold.

[0041] Detailed: When the user inputs the energy-saving mode signal, the test temperature rise data is calculated with the heating energy consumption threshold to obtain how much electric energy is needed if the temperature continues to rise. The electric energy is calculated with the temperature deviation value that can be reduced to obtain how many units of electric energy are needed to correct one unit. The flip signal is calculated with the flip energy consumption threshold to obtain how much electric energy is needed to increase the flip power. The electric energy is calculated with the temperature deviation value that can be reduced to obtain how many units of electric energy are needed to correct one unit. The two are compared to obtain the same effect. The one with smaller energy consumption is selected, which is the low energy consumption data, so as to determine whether to adjust the temperature or increase the flip power, and decide whether to output the flip signal or test the temperature rise. Data, and when the flip signal or the test temperature rise data is continuously adjusted, resulting in higher and higher energy consumption, until the energy consumption increases to exceed the energy consumption of another mode plus the switching threshold, the adjustment mode will be changed at this time. For example, the original flip signal energy consumption rate is q, and the test temperature rise data energy consumption rate is 2q. At this time, the power of the flip signal will be increased to reduce the temperature deviation value. When the flip signal continues to increase, the ratio of energy consumption to effect continues to increase. If the switching threshold is set to 0.5q, then when the energy consumption rate of the flip signal increases to 2.5q, that is, greater than 2q+0.5q of the test temperature rise data, the adjustment of the flip signal will be stopped and switched to increasing the temperature, that is, the temperature deviation value will be adjusted by testing the temperature rise data.

[0042] Embodiment 2 of the present application discloses a computer-readable storage medium. The computer-readable storage medium stores a computer program capable of being loaded by a processor and executing a temperature control method for a heat treatment furnace.

[0043] Computer-readable storage media include, for example, various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A heat treatment furnace, characterized in that: The invention comprises a high-temperature furnace body (1), a thyristor regulating circuit (2), a thermocouple (3) and an input display module (4), wherein the number of the thermocouple (3) and the number of the thyristor regulating circuit (2) are at least two, and a plurality of the thermocouples (3) are respectively controlled by corresponding to different thyristor regulating circuits (2). At least one of the plurality of thermocouples (3) receives a preset adjustment signal output by the thyristor regulating circuit (2) to adjust the temperature in the high-temperature furnace body (1). At least one of the plurality of thermocouples (3) is used to detect the temperature in the high-temperature furnace body (1), and the detected temperature data is output to the thyristor regulating circuit (2). The input display module (4) is used to allow a user to input the adjustment signal and to display the detected temperature data for the user to view.

2. A heat treatment furnace according to claim 1, characterized in that: The high-temperature furnace body (1) is provided with a turning drive member (11), a rotating shaft of the turning drive member (11) extends into the high-temperature furnace body (1), and a turning blade (12) for turning materials is provided on the rotating shaft of the turning drive member (11).

3. A heat treatment furnace according to claim 1, characterized in that: The inner wall of the high-temperature furnace body (1) is covered with a stainless steel inner liner (13).

4. A temperature control method for a heat treatment furnace, using the heat treatment furnace according to claim 1, characterized in that: include: Acquiring the detected temperature data; Determine temperature adjustment data by using the detected temperature data and a preset heat treatment temperature threshold; The adjustment signal is determined and outputted according to the temperature adjustment data and a preset temperature adjustment threshold.

5. A temperature control method for a heat treatment furnace according to claim 4, characterized in that: include: Acquire timing data, where the number of the detected temperature data acquired is multiple; Determine a temperature deviation value through a plurality of the detected temperature data; Determining temperature unevenness coordinate data by using the temperature deviation value, the timing data and a preset temperature measurement coordinate threshold; A flip signal is determined and outputted according to the temperature unevenness coordinate data, a preset temperature unevenness threshold, the adjustment signal and a preset flipping threshold.

6. A temperature control method for a heat treatment furnace according to claim 5, characterized in that: include: Determine the temperature rise breakthrough data by using the flip signal, the adjustment signal, the original temperature unevenness coordinate data, the new temperature unevenness coordinate data and a preset test temperature rise threshold value; Determine the new adjustment signal through the temperature rise breakthrough data and the temperature unevenness coordinate data and output it; Acquire the temperature unevenness coordinate data again, and determine correction data according to the new temperature unevenness coordinate data and the original temperature unevenness coordinate data; Determine the test temperature rise data by using the temperature unevenness coordinate data, the correction data, the heat treatment temperature threshold and a preset variable coefficient; A new adjustment signal is determined and outputted by replacing the temperature rise breakthrough data with the test temperature rise data until the temperature unevenness coordinate data is within the range of the temperature unevenness threshold value.

7. A temperature control method for a heat treatment furnace according to claim 6, characterized in that: include: Get energy saving mode signal; Determine low energy consumption data through the test temperature rise data, the flipping signal, a preset heating energy consumption threshold and a preset flipping energy consumption threshold; Determine a new flip signal or new test temperature rise data through the low energy consumption data, the flip signal and the test temperature rise data; A new flip signal or new test temperature rise data is determined by the low energy consumption data, the test temperature rise data, the flip signal and a preset switching threshold.

8. A computer-readable storage medium, characterized in that: A computer program is stored which can be loaded by a processor and execute the temperature control method of a heat treatment furnace according to any one of claims 4 to 7.

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