Intelligent temperature control equipment and method for centrifugal roller casting process

Abstract

The invention discloses intelligent temperature control equipment and method in the centrifugal roller casting process, and belongs to the technical field of metallurgy. The temperature monitoring device comprises three high-precision temperature sensors installed at the two ends and the middle of the cold mold respectively, a temperature measuring couple inserted into the cold mold and an infrared temperature measuring gun for conducting real-time temperature monitoring on the inner surface of a working layer in the centrifugal process. The temperature regulation and control device comprises air cooling equipment, induction heating equipment and plug control equipment; the control center is provided with an optimization control database, collects temperature data through the temperature monitoring device, compares the temperature data with data in the optimization control database, and controls the temperature regulation and control device in real time. And the production requirements of high-quality rollers are met.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgy, and in particular to intelligent temperature control equipment and method for a centrifugal roller casting process. Background Art

[0002] In the traditional centrifugal casting process, the mold temperature control methods include: 1. By controlling the quality of the mold, the mold temperature is controlled within the preset temperature during the casting process. This includes determining the preset temperature of the mold during the casting process based on the high-temperature mechanical properties of the mold material, and determining the minimum mass of the mold based on the heat balance formula.

[0003] 2. Application of heat balance formula: When the materials of the mold base, cover plate and metal sleeve are the same, or when their materials are different, different formulas are used to determine the minimum mass of the mold to ensure that the mold temperature is within the preset temperature range.

[0004] Traditional methods may not be able to accurately control the temperature of the casting mold, resulting in unstable casting quality and prone to defects.

[0005] In the traditional casting process, the temperature of the mold cannot be accurately controlled, resulting in unclear pouring temperatures for different materials, different wall thicknesses, and different chemical compositions. This experience-based method often cannot accurately control the temperature, easily resulting in a large number of scrap castings, causing losses to the foundry. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide an intelligent temperature control device and method for a centrifugal roller casting process, so as to solve the problems of inaccurate temperature monitoring and inability to regulate temperature in a traditional centrifugal casting process and meet the production requirements of high-quality rollers.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: An intelligent temperature control system for a centrifugal roller casting process, comprising a temperature monitoring device, a temperature control device and a control center; The temperature monitoring device includes three high-precision temperature sensors respectively installed at both ends and the middle of the cold mold, a temperature measuring couple inserted into the cold mold, and an infrared temperature measuring gun for real-time temperature monitoring of the inner surface of the working layer during the centrifugal process; The temperature control device includes air cooling equipment, induction heating equipment and plug control equipment; The control center is provided with an optimized control database. The control center collects temperature data through a temperature monitoring device, and performs real-time control on the temperature control device based on the comparison between the temperature data and the data in the optimized control database.

[0008] An intelligent temperature control method for a centrifugal roller casting process comprises the following steps: S1. The temperature of each part of the cold mold is collected in real time through the temperature monitoring device, and transmitted to the control center to establish a temperature curve; S2. Compare the temperature data with the data in the optimization control database to identify the abnormal temperature areas; S3. Control the temperature control device in real time according to the abnormal temperature position; S4. If there is no abnormality, the cooling speed of the centrifugal roller is precisely controlled; S5. Test product quality parameters. If the finished product quality parameters are better than the quality of the same type of products in the optimization control database, update the database.

[0009] A further improvement of the technical solution of the present invention is that in S1, during the centrifugation process, the temperatures of the two ends and the middle of the cold mold measured by three high-precision temperature sensors, the internal air temperature of the cold mold measured by a temperature measuring couple, and the inner surface temperature of the working layer measured by an infrared temperature measuring gun are transmitted to the control center, and temperature curves are established respectively through data analysis and processing.

[0010] A further improvement of the technical solution of the present invention is that in S2, the control center calls the corresponding temperature curve diagrams required for different types of cold centrifugation processes from the optimization control database, compares them with the real-time measurement data of the temperature monitoring device, and identifies the abnormal temperature parts according to the difference.

[0011] A further improvement of the technical solution of the present invention is that: S3 includes the following situations: The temperature at both ends of the S31 cold type is higher than the upper limit of the target temperature range: the air cooling device is automatically started to increase the air cooling intensity at both ends of the cold type and reduce the temperature. At the same time, the plug control device reduces the tightness of the insulation plug and increases the distance between the plug and the cold type end cover to increase the path of heat dissipation and improve the temperature drop rate; S32 The temperature at both ends of the cold type is lower than the lower limit of the target temperature range: the induction heating equipment is automatically started to perform induction heating on the 0-30% area of ​​the edges of the cold type; the plug control device improves the tightness of the insulation plug at both ends of the cold type, reduces the distance between the plug and the cold type end cover, and reduces heat loss; S33 The temperature in the middle of the cold type is higher than the upper limit of the target temperature range: adjust the wind direction and air outlet distribution of the air cooling equipment so that more cold air is concentrated in the middle of the cold type; S34 The temperature in the middle of the cold type is lower than the lower limit of the target temperature range: start the induction heating equipment in the middle of the cold type; S35 The internal air temperature of the cold type and the internal surface temperature of the working layer are higher than the upper limit of the target temperature range: open the ventilation device inside the cold type to accelerate the internal air flow and reduce the internal air temperature; increase the cold type rotation speed, increase the internal and external air circulation speed of the cold type, and increase the heat dissipation of the cold type; S36 The internal air temperature of the cold type and the internal surface temperature of the working layer are lower than the lower limit of the target temperature range: start the induction heating equipment in the middle of the cold type; reduce the speed of the cold type, reduce the air circulation speed inside and outside the cold type, and reduce the heat dissipation of the cold type; S37 The temperature at both ends and the middle of the cold mold is abnormal at the same time: When temperature abnormalities occur at multiple locations, check whether the casting process parameters of the product, such as pouring speed, pouring temperature, and metal liquid composition, are abnormal; comprehensively adjust the air cooling equipment, heating system, and insulation measures based on steps S31 to S34, and reasonably allocate air cooling equipment and induction heating equipment according to the size of the temperature deviation at different locations, giving priority to solving the problem of locations with large temperature deviations; S38 The internal air temperature of the cold type / the inner surface temperature of the working layer and the temperature at one end or the middle of the cold type are abnormal at the same time: when they are both high, take separate cooling measures for each; when they are both low, take separate heating measures for each.

[0012] A further improvement of the technical solution of the present invention is that in S31 and S33, the wind speed and air volume of the air cooling equipment are adjusted, dynamically adjusted according to the size of the temperature deviation, and the required air cooling intensity adjustment amount is calculated using a PID control algorithm.

[0013] A further improvement of the technical solution of the present invention is that the wind cooling intensity adjustment amount is: when the temperature deviation is 5-10°C, the wind speed is increased by 10-20%; when the temperature deviation exceeds 10°C, the wind speed is increased by 30-50%.

[0014] A further improvement of the technical solution of the present invention is that in S32 and S34, the power of the induction heating device is adjusted, dynamically adjusted according to the temperature deviation, and the required heating intensity adjustment amount is calculated using a PID control algorithm.

[0015] A further improvement of the technical solution of the present invention is that the heating intensity adjustment amount is: when the temperature deviation is 3-5°C, the induction heating is started with a first power, and the first power is 30-40% of the rated power; when the deviation is 5-8°C, the induction heating is started with a second power, and the second power is 50-60% of the rated power; when the deviation exceeds 8°C, the induction heating is started with a third power, and the third power is 70-80% of the rated power for heating until the temperature returns to the target range.

[0016] A further improvement of the technical solution of the present invention is that S4 specifically includes the following steps: At the initial stage of solidification of S41, the temperature of the cold mold begins to rise from 110°C, the air temperature inside the cold mold decreases, and the temperature of the inner surface of the working layer decreases. The temperature drop rate of the air temperature inside the cold mold and the inner surface of the working layer is controlled at 15-25°C / min; S42 In the middle of solidification, turn on the induction heating equipment to heat the two ends and the middle of the cold mold; reduce the speed of the cold mold, increase the tightness of the plug, reduce the distance between the insulation plug and the cold mold, and control the internal air temperature of the cold mold and the temperature drop rate of the inner surface of the working layer at 3-8℃ / min; In the late stage of solidification, S43 turns off the induction heating equipment, increases the air volume and air pressure of the air cooling equipment, increases the rotation speed, and increases the distance between the insulation plug and the cold mold.

[0017] Due to the adoption of the above technical solution, the technical progress achieved by the present invention is: 1. The present invention transmits the temperature data collected by the temperature monitoring device to the control center, and through data analysis and processing, accurately grasps the temperature changes in the casting process, providing data support for precise temperature control.

[0018] 2. The present invention controls the temperature control device through the control center, and can automatically adjust the heating and cooling systems according to the temperature detection data. When the temperature is too high, the air cooling equipment is automatically turned on, the tightness of the thermal insulation plug is reduced, and the temperature drop rate is increased; when the temperature is too low, the induction heating equipment is automatically started, the tightness of the thermal insulation plug is improved, and the temperature can be automatically adjusted to be within the design target range.

[0019] 3. The present invention optimizes the centrifugal casting process by combining a temperature control device. By adjusting the temperature drop rate, the centrifugal stop time of the outer layer can be fixed, and then the core out of the furnace time, out of the furnace temperature, and the core pouring time can be fixed. The accuracy of parameter matching is ensured, thereby improving the quality of the bonding layer of the centrifugal roller; during the solidification process, the cooling rate is accurately controlled to improve the strength, toughness, and consistency of the roller.

[0020] 4. The present invention regulates the microstructure by controlling the cooling rate of the centrifugal roller; when the grain structure needs to be refined, a strategy of increasing the cooling rate can be adopted; in order to obtain the ideal carbide morphology and distribution, the cooling rate can be reduced in the middle of solidification or an intermittent cooling method can be adopted.

[0021] 5. The high-vanadium high-speed steel centrifugal roller can increase the MC carbide content, improve the organizational morphology, and improve the performance of the roller by adjusting the cold forming speed of the method of the present invention. DETAILED DESCRIPTION

[0022] The present invention is described in further detail below: The terms "first", "second", ... are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", ... may explicitly or implicitly include at least one of the features.

[0024] An intelligent temperature control system for a centrifugal roller casting process, comprising a temperature monitoring device, a temperature control device and a control center; The temperature monitoring device includes three high-precision temperature sensors respectively installed at both ends and the middle of the cold mold, a temperature measuring couple inserted into the cold mold, and an infrared temperature measuring gun for real-time temperature monitoring of the inner surface of the working layer during the centrifugal process; The temperature control device includes air cooling equipment, induction heating equipment and plug control equipment; The control center is provided with an optimized control database. The control center collects temperature data through a temperature monitoring device, and performs real-time control on the temperature control device based on the comparison between the temperature data and the data in the optimized control database.

[0025] An intelligent temperature control method for a centrifugal roller casting process comprises the following steps: S1. The temperature of each part of the cold mold is collected in real time through the temperature monitoring device, and transmitted to the control center to establish a temperature curve; During the centrifugation process, the temperatures at both ends and the middle of the cold mold measured by three high-precision temperature sensors, the internal air temperature of the cold mold measured by a thermometer, and the inner surface temperature of the working layer measured by an infrared temperature gun are transmitted to the control center. Through data analysis and processing, temperature curves are established respectively to accurately grasp the temperature changes during the casting process, providing data support for precise temperature control.

[0026] S2. Compare the temperature data with the data in the optimization control database to identify the abnormal temperature areas; The control center calls up the corresponding temperature curves required for different types of cold centrifugation processes from the optimization control database, compares them with the real-time measurement data of the temperature monitoring device, and identifies the abnormal temperature areas based on the difference.

[0027] S3. Control the temperature control device in real time according to the abnormal temperature position; The temperature at both ends of the S31 cold type is higher than the upper limit of the target temperature range: the air cooling device is automatically started to increase the air cooling intensity at both ends of the cold type and reduce the temperature. At the same time, the plug control device reduces the tightness of the insulation plug and increases the distance between the plug and the cold type end cover to increase the path of heat dissipation and improve the temperature drop rate; Adjust the wind speed and air volume of the air cooling equipment, dynamically adjust according to the size of the temperature deviation, and use the proportional integral differential (PID) control algorithm to accurately calculate the required air cooling intensity adjustment to ensure that the temperature can be quickly and stably reduced to the target range.

[0028] For example, when the temperature deviation is 5-10℃, adjust the air cooling equipment according to the preset PID parameters to increase the wind speed by 10-20%; when the temperature deviation exceeds 10℃, increase the wind speed by 30-50%. In addition, it is necessary to check whether the working status of the heating system at both ends of the cold type is normal. If there is any abnormality, adjust or shut down the heating components in time.

[0029] S32 The temperature at both ends of the cold type is lower than the lower limit of the target temperature range: the induction heating equipment is automatically started to perform induction heating on the 0-30% area of ​​the edges of the cold type; the plug control device improves the tightness of the insulation plug at both ends of the cold type, reduces the distance between the plug and the cold type end cover, and reduces heat loss; Adjust the power of the induction heating equipment, make dynamic adjustments according to the temperature deviation, and use the PID control algorithm to accurately calculate the required heating intensity adjustment to ensure that the temperature can rise quickly and stably within the target range.

[0030] For example, when the temperature deviation is 3-5℃, the induction heating is started at the first power, which is 30-40% of the rated power; when the deviation is 5-8℃, the induction heating is started at the second power, which is 50-60% of the rated power; when the deviation exceeds 8℃, the induction heating is started at the third power, which is 70-80% of the rated power, until the temperature returns to the target range. In addition, it is necessary to check whether the insulation plugs at both ends of the cold type are damaged or the insulation performance is reduced. If there is any abnormality, it is necessary to repair or replace the insulation material in time.

[0031] S33 The temperature in the middle of the cold type is higher than the upper limit of the target temperature range: adjust the wind direction and air outlet distribution of the air cooling equipment so that more cold air is concentrated in the middle of the cold type; Adjust the wind speed and air volume of the air cooling equipment, dynamically adjust according to the size of the temperature deviation, and use the proportional integral differential (PID) control algorithm to accurately calculate the required air cooling intensity adjustment to ensure that the temperature can be quickly and stably reduced to the target range.

[0032] S34 The temperature in the middle of the cold type is lower than the lower limit of the target temperature range: start the induction heating equipment in the middle of the cold type, and also use the PID control algorithm; Adjust the power of the induction heating equipment, make dynamic adjustments according to the temperature deviation, and use the PID control algorithm to accurately calculate the required heating intensity adjustment to ensure that the temperature can rise quickly and stably within the target range.

[0033] For example, when the temperature deviation is 3-5°C, the induction heating is started at the first power, which is 30-40% of the rated power; when the deviation is 5-8°C, the induction heating is started at the second power, which is 50-60% of the rated power; when the deviation exceeds 8°C, the induction heating is started at the third power, which is 70-80% of the rated power, until the temperature returns to the target range. In addition, the analysis is conducted to detect whether there are other factors in the casting process that cause abnormal temperature in the middle, such as abnormal pouring speed, abnormal pouring temperature, abnormal coating thickness, etc.

[0034] S35 The internal air temperature of the cold type and the internal surface temperature of the working layer are higher than the upper limit of the target temperature range: open the ventilation device inside the cold type to accelerate the internal air flow and reduce the internal air temperature; increase the cold type rotation speed, increase the internal and external air circulation speed of the cold type, and increase the heat dissipation of the cold type; S36 The internal air temperature of the cold type and the internal surface temperature of the working layer are lower than the lower limit of the target temperature range: start the induction heating equipment in the middle of the cold type; reduce the speed of the cold type, reduce the air circulation speed inside and outside the cold type, and reduce the heat dissipation of the cold type; S37 The temperature at both ends and the middle of the cold mold is abnormal at the same time: When temperature abnormalities occur at multiple locations, check whether the casting process parameters of the product, such as pouring speed, pouring temperature, and metal liquid composition, are abnormal; comprehensively adjust the air cooling equipment, heating system, and insulation measures based on steps S31 to S34, and reasonably allocate air cooling equipment and induction heating equipment according to the size of the temperature deviation at different locations, giving priority to solving the problem of locations with large temperature deviations; For example, if the temperature deviation at both ends of the cold type is large and higher than the upper limit, you can first use greater force to cool the two ends of the cold type with air cooling, and at the same time appropriately dissipate heat in the middle; if the temperature at both ends is smaller and lower than the lower limit, and the temperature deviation at noon is large and lower than the lower limit, then focus on heating the middle part, and take insulation and auxiliary heating measures at both ends.

[0035] S38 The internal air temperature of the cold type / the inner surface temperature of the working layer and the temperature at one end or the middle of the cold type are abnormal at the same time: When they are both high, take separate cooling measures for each, pay attention to the synergy of internal and external cooling measures, and avoid mutual interference. When they are both low, take separate heating measures for each, pay attention to the synergy of internal and external cooling measures, and avoid mutual interference; For example, while strengthening the internal ventilation and external air cooling of the cold type, it is necessary to ensure that the sealing performance of the cold type will not be damaged due to the transition to the same direction. If both are low, the heating power and time should be reasonably controlled during the internal heating and external insulation and heating process to prevent a certain temperature from rising too fast while other parts cannot keep up, resulting in uneven temperature.

[0036] S4. If there is no abnormality, the cooling speed of the centrifugal roller is precisely controlled; The dispersed granular MC carbides in the high-vanadium high-speed steel roll have the advantages of high hardness, dispersion strengthening, and crack inhibition. The content of this type of carbide can be increased by controlling the cooling rate during the centrifugal process. The specific operation is as follows: In the initial stage of solidification of S41 (the inner surface temperature of the working layer is greater than 1300℃), the temperature of the cold mold begins to rise from 110℃, the air temperature inside the cold mold decreases, and the inner surface temperature of the working layer decreases. At this time, an appropriate amount of air inside the cold mold is required to reduce the cooling speed, reduce the air volume and air pressure of the air cooling equipment, and control the temperature drop rate of the air inside the cold mold and the inner surface of the working layer at 15-25℃ / min; S42 is in the middle stage of solidification (the inner surface temperature of the working layer is 1200-1300℃), at which time MC carbides begin to precipitate in large quantities, and the cooling rate needs to be reduced to increase the generation time of MC carbides. Turn on the induction heating equipment to heat the two ends and the middle of the cold mold; reduce the speed of the cold mold, increase the tightness of the plug, and reduce the distance between the insulation plug and the cold mold, and control the internal air temperature of the cold mold and the temperature drop rate of the inner surface of the working layer at 3-8℃ / min.

[0037] In the late solidification stage of S43 (the inner surface temperature of the working layer is less than 1200℃), the cooling speed needs to be accelerated to reduce the content of eutectic carbides such as M6C and M7C3. Turn off the induction heating equipment, increase the air volume and air pressure of the air cooling equipment, increase the speed, and increase the distance between the insulation plug and the cold mold.

[0038] S5. Test product quality parameters. If the finished product quality parameters are better than the quality of the same type of products in the optimization control database, update the database.

[0039] In summary, the present invention solves the problems of inaccurate temperature monitoring and inability to control temperature in the traditional centrifugal casting process, and meets the production requirements of high-quality rolling rolls.

Claims

1. An intelligent temperature control system for centrifugal roll casting process, characterized in that: Including temperature monitoring device, temperature control device and control center; The temperature monitoring device includes three high-precision temperature sensors respectively installed at both ends and the middle of the cold mold, a temperature measuring couple inserted into the cold mold, and an infrared temperature measuring gun for real-time temperature monitoring of the inner surface of the working layer during the centrifugal process; The temperature control device includes air cooling equipment, induction heating equipment and plug control equipment; The control center is provided with an optimized control database. The control center collects temperature data through a temperature monitoring device, and performs real-time control on the temperature control device based on the comparison between the temperature data and the data in the optimized control database.

2. An intelligent temperature control method for a centrifugal roller casting process, characterized in that: The intelligent temperature control system for centrifugal roll casting process as claimed in claim 1 comprises the following steps: S1. The temperature of each part of the cold mold is collected in real time through the temperature monitoring device, and transmitted to the control center to establish a temperature curve; S2. Compare the temperature data with the data in the optimization control database to identify the temperature abnormality areas; S3. Control the temperature control device in real time according to the abnormal temperature position; S4. If there is no abnormality, the cooling speed of the centrifugal roller is precisely controlled; S5. Test product quality parameters. If the finished product quality parameters are better than the quality of the same type of products in the optimization control database, update the database.

3. The intelligent temperature control method for centrifugal roller casting process according to claim 2 is characterized in that: In S1, during the centrifugation process, the temperatures at both ends and the middle of the cold type measured by three high-precision temperature sensors, the internal air temperature of the cold type measured by a thermocouple, and the inner surface temperature of the working layer measured by an infrared temperature gun are transmitted to the control center, and temperature curves are established through data analysis and processing.

4. The intelligent temperature control method for centrifugal roller casting process according to claim 2 is characterized in that: In S2, the control center calls the corresponding temperature curves required for different types of cold centrifugation processes from the optimization control database, compares them with the real-time measurement data of the temperature monitoring device, and identifies the abnormal temperature areas based on the difference.

5. The intelligent temperature control method for centrifugal roller casting process according to claim 2 is characterized in that: In S3, the following situations are included: The temperature at both ends of the S31 cold type is higher than the upper limit of the target temperature range: the air cooling device is automatically started to increase the air cooling intensity at both ends of the cold type and reduce the temperature. At the same time, the plug control device reduces the tightness of the insulation plug and increases the distance between the plug and the cold type end cover to increase the path of heat dissipation and improve the temperature drop rate; S32 The temperature at both ends of the cold type is lower than the lower limit of the target temperature range: the induction heating equipment is automatically started to perform induction heating on the 0-30% area of ​​the edges of the cold type; the plug control device improves the tightness of the insulation plug at both ends of the cold type, reduces the distance between the plug and the cold type end cover, and reduces heat loss; S33 The temperature in the middle of the cold type is higher than the upper limit of the target temperature range: adjust the wind direction and air outlet distribution of the air cooling equipment so that more cold air is concentrated in the middle of the cold type; S34 The temperature in the middle of the cold type is lower than the lower limit of the target temperature range: start the induction heating equipment in the middle of the cold type; S35 The internal air temperature of the cold type and the internal surface temperature of the working layer are higher than the upper limit of the target temperature range: open the ventilation device inside the cold type to accelerate the internal air flow and reduce the internal air temperature; increase the cold type rotation speed, increase the internal and external air circulation speed of the cold type, and increase the heat dissipation of the cold type; S36 The internal air temperature of the cold type and the internal surface temperature of the working layer are lower than the lower limit of the target temperature range: start the induction heating equipment in the middle of the cold type; reduce the speed of the cold type, reduce the air circulation speed inside and outside the cold type, and reduce the heat dissipation of the cold type; S37 The temperature at both ends and the middle of the cold mold is abnormal at the same time: When temperature abnormalities occur at multiple locations, check whether the casting process parameters of the product, such as pouring speed, pouring temperature, and metal liquid composition, are abnormal; comprehensively adjust the air cooling equipment, heating system, and insulation measures based on steps S31 to S34, and reasonably allocate air cooling equipment and induction heating equipment according to the size of the temperature deviation at different locations, giving priority to solving the problem of locations with large temperature deviations; S38 The internal air temperature of the cold type / the inner surface temperature of the working layer and the temperature at one end or the middle of the cold type are abnormal at the same time: when they are both high, take separate cooling measures for each; when they are both low, take separate heating measures for each.

6. The intelligent temperature control method for centrifugal roller casting process according to claim 5, characterized in that: In S31 and S33, the wind speed and air volume of the air cooling equipment are adjusted, and dynamic adjustments are made according to the size of the temperature deviation. The required air cooling intensity adjustment amount is calculated using a PID control algorithm.

7. The intelligent temperature control method for centrifugal roller casting process according to claim 6, characterized in that: The wind cooling intensity adjustment amount is: when the temperature deviation is 5-10°C, the wind speed is increased by 10-20%; when the temperature deviation exceeds 10°C, the wind speed is increased by 30-50%.

8. The intelligent temperature control method for centrifugal roller casting process according to claim 5, characterized in that: In S32 and S34, the power of the induction heating device is adjusted, and dynamic adjustment is performed according to the temperature deviation, and the required heating intensity adjustment amount is calculated using a PID control algorithm.

9. The intelligent temperature control method for centrifugal roller casting process according to claim 8, characterized in that: The heating intensity adjustment amount is: when the temperature deviation is 3-5°C, induction heating is started with a first power, which is 30-40% of the rated power; when the deviation is 5-8°C, induction heating is started with a second power, which is 50-60% of the rated power; when the deviation exceeds 8°C, induction heating is started with a third power, which is 70-80% of the rated power, until the temperature returns to the target range.

10. The intelligent temperature control method for centrifugal roller casting process according to claim 2, characterized in that: S4 specifically includes the following steps: At the initial stage of solidification of S41, the temperature of the cold mold begins to rise from 110°C, the air temperature inside the cold mold decreases, and the temperature of the inner surface of the working layer decreases. The temperature drop rate of the air temperature inside the cold mold and the inner surface of the working layer is controlled at 15-25°C / min; S42 In the middle of solidification, turn on the induction heating equipment to heat the two ends and the middle of the cold mold; reduce the speed of the cold mold, increase the tightness of the plug, reduce the distance between the insulation plug and the cold mold, and control the internal air temperature of the cold mold and the temperature drop rate of the inner surface of the working layer at 3-8℃ / min; In the late stage of solidification, S43 turns off the induction heating equipment, increases the air volume and air pressure of the air cooling equipment, increases the rotation speed, and increases the distance between the insulation plug and the cold mold.