Slab cooling method and slab furnace

Abstract

The embodiment of the application discloses a slab cooling method and a slab furnace. The slab cooling method first cools the slab through a first cooling module in response to a cooling instruction, switches to a second cooling module for continuous operation after a first time period, and alternately receives the slab output from the smelting chamber by the two cooling modules, thereby avoiding the cooling waiting gap during the operation of a single cooling module, greatly improving the operation continuity and overall production efficiency of the slab cooling. Meanwhile, the design of the cooling module being connected to the output end of the smelting chamber, combined with precise time switching control, enables each cooling module to complete the cooling operation under rated working conditions, ensures the stability of the slab cooling effect, and avoids the problem of cooling efficiency decay caused by long-time continuous operation of a single module. In addition, the modular alternating cooling mode can continue the operation by another module when one of the cooling modules is maintained or debugged, effectively reduces the equipment downtime, and improves the overall availability of the slab furnace.

Description

Technical Field

[0001] This application relates to the field of permanent magnet material processing technology, and in particular to a casting sheet cooling method and a casting furnace. Background Technology

[0002] Rare earth permanent magnet materials, with their excellent magnetic properties, are increasingly being used in medical magnetic resonance imaging, computer hard disk drives, audio equipment, mobile phones, and other fields. With the increasing demand for energy conservation and a low-carbon economy, neodymium iron boron rare earth permanent magnet materials are also beginning to be widely used in automotive parts, air conditioning compressors, energy-saving and control motors, hybrid vehicles, wind power generation, and other fields.

[0003] The preparation of neodymium iron boron rare earth permanent magnet materials requires melting neodymium iron boron raw materials into a molten alloy under vacuum or a protective atmosphere, and then casting it into alloy sheets. In the existing process, the molten alloy is first cooled by a quenching roller, then crushed by a crusher, and then cooled a second time by a 30Hz fixed-frequency cooling module. Finally, it falls into a recovery container with a water-cooled jacket for a third static cooling, which takes 4-6 hours to cool the flakes to the target temperature of 60°C. This process has problems such as low cooling efficiency, a large amount of waste of argon gas due to covering the volume of the recovery container, and static cooling can easily lead to the growth of flake grains, affecting quality. At the same time, it requires 8-10 recovery containers, increasing costs, and the process of discharging with a turning machine makes the production process cumbersome and the operation risky. Summary of the Invention

[0004] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This part of the invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0006] Therefore, a first aspect of the present invention provides a method for cooling a cast sheet.

[0007] A second aspect of the present invention provides a casting furnace.

[0008] In view of the above, a casting sheet cooling method is proposed according to a first aspect of the embodiments of this application, applied to a casting furnace, the casting furnace including a melting chamber and at least two cooling modules, each of the cooling modules being connected to the output end of the melting chamber, the casting sheet cooling method comprising: In response to the casting cooling command, the casting output from the melting chamber is transported to the first cooling module, and the casting is cooled by the first cooling module; After the first period of time, the output end of the melting chamber is connected to another cooling module, and the castings output from the melting chamber are transported to the second cooling module for cooling.

[0009] In one feasible implementation, the first duration is determined based on the initial temperature of the casting as it exits the melting chamber, the target cooling temperature of the casting, and the amount of cooling provided by the cooling module per unit time.

[0010] In one feasible implementation, the value of the first duration is negatively correlated with the initial temperature, and the value of the first duration is positively correlated with the target cooling temperature and the cooling capacity.

[0011] In one feasible implementation, the first duration is determined based on the temperature drop of the cast sheet within the drum per unit time.

[0012] In one feasible implementation, the cooling module includes: a drum, a cooling jacket, and spiral fins, wherein the cooling jacket is fitted over the outside of the drum, and the step of cooling the casting using the cooling module includes: The monitoring temperature of the castings inside the drum is obtained; The operating frequency of the spiral fins is controlled based on the monitored temperature; The operating frequency is positively correlated with the monitored temperature.

[0013] In one feasible implementation, the step of controlling the rotational speed of the spiral fins based on the monitored temperature includes: Set multiple temperature ranges; Construct a function to determine the operating frequency for each temperature range; The operating frequency is determined based on the monitored temperature and multiple operating frequency determination functions.

[0014] In one feasible implementation, the multiple temperature ranges include at least a first temperature range, a second temperature range, and a third temperature range, with the temperature values ​​decreasing from the first temperature range to the third temperature range. The function for determining the operating frequency corresponding to the first temperature range is: F=0.2T-60 The function for determining the operating frequency corresponding to the second temperature range is: F = 3 / 40 × T + 15 The function for determining the operating frequency corresponding to the third temperature range is: F = (T + 10) / 7 Where F is the operating frequency and T is the monitored temperature.

[0015] In one feasible implementation, the step of obtaining the monitoring temperature of the casting within the drum includes: Thermocouples are arranged at the inlet end, outlet end and middle section of the drum; The monitored temperature is obtained based on the average value of multiple thermocouples.

[0016] In one feasible implementation, the casting cooling method further includes: When the time the casting stays in the drum is greater than a first threshold and the monitored temperature is greater than a second threshold, the current cooling module is disconnected from the melting chamber, and the melting chamber is connected to another cooling module instead.

[0017] According to a second aspect of the embodiments of this application, a casting furnace is provided, including... A melting chamber and at least two cooling modules, each of the cooling modules being connected to the output of the melting chamber; The cooling module includes a drum, a cooling jacket, and spiral fins. The cooling jacket is sleeved on the outside of the drum, and the spiral fins are rotatably disposed inside the drum. When the drum rotates in a first direction, the casting sheet moves into the drum. When the drum rotates in a second direction, the casting sheet is output through the drum. A controller for performing the casting cooling method as described in any of the above technical solutions.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects: The casting sheet cooling method provided in this application relies on a casting furnace structure equipped with at least two cooling modules to achieve continuous casting sheet cooling operation. Upon responding to a cooling command, the casting sheet is first cooled by the first cooling module. After a first duration, the process switches to the second cooling module to continue operation. The two cooling modules alternately receive the casting sheets output from the melting chamber, avoiding the cooling waiting gaps that occur when a single cooling module is operating, significantly improving the continuity of casting sheet cooling operations and overall production efficiency. Simultaneously, the design of all cooling modules being connected to the melting chamber output, combined with precise duration switching control, allows each cooling module to complete its cooling operation under rated conditions, ensuring the stability of the casting sheet cooling effect and avoiding the cooling efficiency decay problem caused by prolonged continuous operation of a single module. Furthermore, the modular alternating cooling method allows one cooling module to continue operating while another is undergoing maintenance or debugging, effectively reducing equipment downtime, increasing the overall uptime of the casting furnace, and adapting to the needs of large-scale casting sheet production.

[0019] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0020] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic flowchart illustrating the steps of a casting cooling method according to an embodiment of this application; Figure 2 A schematic structural block diagram of a casting furnace according to one embodiment of this application; Figure 3 A schematic structural diagram of a casting furnace according to one embodiment of this application.

[0021] in, Figures 1 to 3 The correspondence between the reference numerals and component names in the attached drawings is as follows: 110 Melting Chamber, 120 Intermediate Chamber, 130 Cooling Module, 140 Casting Sheet Guiding Mechanism, 150 Receiving Container, 160 Crushing Mechanism, 170 Preparation Chamber, 180 Trolley, 190 Water-Cooled Roller, 200 Tundish, 210 First Valve, 220 Melting Crucible, 230 Casting Mechanism, 240 Measuring Chamber, 250 Third Valve, 260 Feeding Chamber, 270 Fourth Valve, 280 Fifth Valve, 290 Thermocouple; 131 Drum, 132 Cooling jacket, 133 Spiral fins, 134 Drive shaft, 135 Second drive component, 136 Vacuum chamber, 137 Seal, 138 Guide component; 141 Guide channel, 142 First control valve, 143 First drive component. Detailed Implementation

[0022] The following description provides numerous specific details to offer a more thorough understanding of the technical solutions provided by this invention. However, it will be apparent to those skilled in the art that the technical solutions provided by this invention can be implemented without one or more of these details.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0024] Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the invention is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art.

[0025] like Figure 1 As shown, a casting sheet cooling method is proposed according to a first aspect of the embodiments of this application, applied to a casting furnace. The casting furnace includes a melting chamber and at least two cooling modules, each cooling module being connected to the output end of the melting chamber. The casting sheet cooling method includes: Step 101: In response to the casting cooling command, the casting output from the melting chamber is transported to the first cooling module, and the casting is cooled by the first cooling module; Step 102: After the first duration, the output end of the melting chamber is connected to another cooling module, and the castings output from the melting chamber are transported to the second cooling module for cooling.

[0026] The casting sheet cooling method provided in this application relies on a casting furnace structure equipped with at least two cooling modules to achieve continuous casting sheet cooling operation. Upon responding to a cooling command, the casting sheet is first cooled by the first cooling module. After a first duration, the process switches to the second cooling module to continue operation. The two cooling modules alternately receive the casting sheets output from the melting chamber, avoiding the cooling waiting gaps that occur when a single cooling module is operating, significantly improving the continuity of casting sheet cooling operations and overall production efficiency. Simultaneously, the design of all cooling modules being connected to the melting chamber output, combined with precise duration switching control, allows each cooling module to complete its cooling operation under rated conditions, ensuring the stability of the casting sheet cooling effect and avoiding the cooling efficiency decay problem caused by prolonged continuous operation of a single module. Furthermore, the modular alternating cooling method allows one cooling module to continue operating while another is undergoing maintenance or debugging, effectively reducing equipment downtime, increasing the overall uptime of the casting furnace, and adapting to the needs of large-scale casting sheet production.

[0027] In one feasible implementation, the first duration is determined based on the initial temperature of the casting as it exits the melting chamber, the target cooling temperature of the casting, and the amount of cooling provided by the cooling module per unit time.

[0028] In this technical solution, considering the temperature difference between the output temperature of the casting and the temperature of the coolant in the cooling module, prolonged use of a particular cooling module may affect cooling efficiency, while short-term use may lead to wasted cooling capacity. Therefore, a method for determining the first duration is provided, precisely linking the first duration with the initial temperature of the casting, the target cooling temperature, and the cooling capacity per unit time of the cooling module. The relationships between these parameters are clearly defined, enabling a scientific and precise setting of the cooling module switching timing. Calculating the first duration based on actual cooling operating parameters ensures a high degree of match between the cooling module switching and the actual cooling progress of the casting, avoiding insufficient cooling due to premature switching or excessive load on a single module and decreased cooling efficiency due to late switching, thus guaranteeing consistent cooling performance of the casting.

[0029] In one feasible implementation, the value of the first duration is negatively correlated with the initial temperature, and positively correlated with the target cooling temperature and cooling capacity.

[0030] In this technical solution, a clear correlation is established between the initial cooling time and the initial temperature of the casting, the target cooling temperature, and the cooling capacity per unit time of the cooling module. This setting ensures that the switching time closely matches the actual cooling characteristics of the casting. The higher the initial temperature of the casting, the more urgent the cooling requirement, and a shorter initial cooling time allows for rapid module switching to ensure cooling efficiency. Conversely, the higher the target temperature and the greater the cooling capacity, the longer the initial cooling time allows each individual cooling module to fully utilize its cooling performance. This effectively avoids the problems of insufficient cooling caused by switching too early and excessive load on the cooling module caused by switching too late, ensuring the stability and consistency of the casting cooling effect. At the same time, it allows the alternating operation rhythm of the two cooling modules to be highly matched with the actual working conditions, improving the adaptability of the cooling process, balancing production continuity and cooling quality, and adapting to diverse casting production needs.

[0031] In one feasible implementation, the first duration is determined based on the rate of temperature drop of the casting within the drum per unit time.

[0032] In this technical solution, the initial cooling time is deliberately determined by the temperature drop of the casting within the drum per unit time. This allows the switching timing of the cooling modules to be correlated with the actual cooling process of the casting, achieving dynamic and precise setting of the switching time. Compared to the mechanical mode with fixed-time switching, this method directly formulates the switching strategy based on the actual temperature drop pattern of the casting within the drum. It can accurately match the cooling characteristics of the casting at different cooling stages, avoiding deviations in switching timing due to changes in operating conditions. When the temperature drop is rapid, the corresponding duration is appropriately matched to allow a single cooling module to fully complete the cooling operation; when the temperature drop is slow, the cooling module is switched in a timely manner to ensure cooling efficiency, effectively avoiding problems such as insufficient cooling or module idleness.

[0033] In one feasible implementation, the cooling module includes: a drum, a cooling jacket, and spiral fins. The cooling jacket is fitted over the outside of the drum. The step of cooling the casting using the cooling module includes: acquiring the monitoring temperature of the casting inside the drum; controlling the operating frequency of the spiral fins based on the monitoring temperature; wherein the operating frequency is positively correlated with the monitoring temperature.

[0034] In this technical solution, the cooling module includes a drum, a cooling jacket, and spiral fins, and dynamically adjusts the operating frequency of the spiral fins by combining temperature monitoring. The cooling jacket covers the outside of the drum to form a basic cooling layer, which, together with the agitation of the internal spiral fins, ensures full contact between the cast sheet and the drum's cooling surface, enhancing heat exchange efficiency and preventing uneven cooling of the cast sheet in certain areas. Simultaneously, by acquiring real-time monitoring of the temperature of the cast sheet inside the drum, the operating frequency of the spiral fins is adjusted using a positive correlation logic. The higher the temperature of the cast sheet, the faster the spiral fins rotate, accelerating the tumbling and heat exchange rate of the cast sheet and rapidly reducing the temperature of the high-temperature cast sheet. As the temperature decreases, the operating frequency is adjusted accordingly, ensuring cooling effectiveness while avoiding energy waste. This dynamic control method adapts the cooling process to the actual temperature of the cast sheet, balancing cooling efficiency and energy saving, effectively improving the uniformity and stability of the cast sheet cooling, and ensuring the quality of the cast sheet product.

[0035] In one feasible implementation, the step of controlling the rotational speed of the spiral fins based on temperature monitoring includes: setting multiple temperature ranges; constructing an operating frequency determination function for each temperature range; and determining the operating frequency based on the monitored temperature and the multiple operating frequency determination functions.

[0036] This technical solution achieves refined and precise control of the spiral fin rotation speed by dividing the temperature range into multiple zones and constructing a dedicated operating frequency determination function for each zone. This ensures that the heat exchange efficiency of the cooling module is highly adapted to the characteristics of different cooling stages of the cast plates. Compared to a single frequency control logic, the functional setting between zones can match the optimal operating frequency to the heat exchange requirements of different stages of the cast plates, such as high temperature, medium temperature, and low temperature, avoiding heat exchange efficiency bottlenecks or energy waste in a single control mode. Simultaneously, the operating frequency determination function can quickly calculate the corresponding frequency based on the monitored temperature, making speed control more scientific and standardized, and reducing errors from manual intervention. Combined with the basic cooling structure of the roller and cooling jacket, the refined speed control further enhances the contact efficiency between the cast plates and the cooling surface, improves cooling uniformity, effectively avoids local overheating or insufficient cooling, ensures the stability of the cast plate cooling quality, and balances cooling efficiency with process adaptability.

[0037] In one feasible implementation, the multiple temperature ranges include at least a first temperature range, a second temperature range, and a third temperature range, with the temperature values ​​decreasing from the first temperature range to the third temperature range. The function for determining the operating frequency corresponding to the first temperature range is: F=0.2T-60 The function for determining the operating frequency corresponding to the second temperature range is: F = 3 / 40 × T + 15 The function for determining the operating frequency corresponding to the third temperature range is: F = (T + 10) / 7 Where F is the operating frequency and T is the monitored temperature.

[0038] In this technical solution, the cooling of the casting sheet is divided into three temperature-decreasing intervals, and a dedicated operating frequency determination function is configured for each interval. This achieves precise and phased intelligent control of the spiral fin rotation speed, ensuring that the cooling rhythm is highly compatible with the heat transfer characteristics of different temperature ranges of the casting sheet. The high-temperature interval is adapted to a high-frequency function, accelerating fin rotation to increase the casting sheet tumbling and heat transfer frequency, rapidly reducing the high-temperature casting sheet temperature. The medium- and low-temperature intervals correspond to an adaptive function, gradually lowering the frequency to ensure sufficient dissipation of residual heat while avoiding energy waste and casting sheet vibration caused by excessively high frequencies. The fixed function formula allows frequency calculation to directly rely on monitored temperature, standardizing the control process and eliminating human intervention errors. Combined with the basic cooling structure of the cooling module, this significantly improves the uniformity of casting sheet cooling, completely avoiding problems such as insufficient local cooling or secondary heating, balancing cooling efficiency and process stability, and ensuring the metallographic quality of the casting sheet product.

[0039] In one feasible implementation, the step of obtaining the monitoring temperature of the casting inside the drum includes: arranging thermocouples at the inlet end, outlet end and middle section of the drum; and obtaining the monitoring temperature based on the average of multiple thermocouples.

[0040] In this technical solution, thermocouples are placed at the drum inlet, outlet, and middle section, and the average value is used as the monitoring temperature. This achieves comprehensive and accurate monitoring of the temperature of the castings inside the drum, avoiding the limitations and errors of single-point temperature measurement. Multi-point temperature measurement can comprehensively reflect the temperature distribution and changes of the castings throughout the cooling process, and the average value calculation can offset local temperature deviations, making the monitored temperature more closely match the actual cooling state of the castings. Based on this accurate temperature data, the frequency of the spiral fins can be adjusted, which can significantly improve the accuracy of speed control, ensure the adaptability of the frequency function of each temperature zone, and make the cooling operation highly matched with the actual cooling requirements of the castings. This provides reliable data support for refined and staged cooling, and further improves the uniformity and stability of the casting cooling.

[0041] In one feasible implementation, the casting cooling method further includes: when the time the casting stays in the drum is greater than a first threshold and the monitored temperature is greater than a second threshold, controlling the current cooling module to disconnect from the melting chamber and instead connecting the melting chamber to another cooling module.

[0042] In this technical solution, the cooling module may malfunction. Based on this, an abnormal switching mechanism for the cooling module is added, providing dual protection for the cooling effect of the casting and effectively avoiding production problems caused by the failure of a single cooling module. When the casting remains in the drum for longer than the first threshold and the monitored temperature is still higher than the second threshold, it indicates that the current cooling module can no longer achieve effective cooling. At this time, the module is promptly disconnected and switched to another cooling module, preventing quality problems such as grain growth and metallographic abnormalities due to insufficient cooling, while also preventing defective castings from flowing into subsequent processes. Furthermore, this mechanism can complete the module switching without manual intervention, ensuring the continuity of cooling operations, avoiding production stoppages due to single module failures, and allowing time for equipment maintenance by promptly removing the faulty module from the workflow. It balances casting cooling quality and production efficiency, adapting to the needs of large-scale, automated casting production.

[0043] like Figure 2 and Figure 3 As shown, a casting furnace is provided according to a second aspect of an embodiment of this application, comprising: The melting chamber 110 and at least two cooling modules 130, each of which is connected to the output of the melting chamber 110; The cooling module 130 includes: a drum 131, a cooling sleeve 132, and a spiral fin 133. The cooling sleeve 132 is sleeved on the outside of the drum 131, and the spiral fin 133 is rotatably disposed inside the drum 131. When the drum 131 rotates in a first direction, the casting sheet moves into the drum 131. When the drum 131 rotates in a second direction, the casting sheet is output through the drum 131. A controller is used to execute the casting cooling method as described in any of the above technical solutions.

[0044] The casting furnace provided in this application embodiment has all the beneficial effects of the casting cooling method described above because the controller executes the casting cooling method of any of the above technical solutions.

[0045] In some examples, the casting furnace may also include a thermocouple 290 disposed within the drum 131 for temperature detection.

[0046] A casting furnace includes: a melting chamber 110 for outputting castings; an intermediate chamber 120 connected to the output end of the melting chamber 110; and a cooling module 130 connected to the output end of the intermediate chamber 120. The cooling module 130 includes: a drum 131, a cooling sleeve 132, and spiral fins 133. The cooling sleeve 132 is fitted on the outside of the drum 131, and the spiral fins 133 are rotatably disposed inside the drum 131. When the spiral fins 133 rotate in a first direction, the castings move into the drum 131. When the spiral fins 133 rotate in a second direction, the castings are output through the drum 131.

[0047] The casting furnace provided in this embodiment includes a melting chamber 110, an intermediate chamber 120, and a cooling module 130. The cooling module 130 includes a drum 131, a cooling jacket 132, and spiral fins 133. During operation, the melting chamber 110 first prepares and outputs the castings. The castings enter the intermediate chamber 120 through a connecting channel and are then guided from the intermediate chamber 120 to the cooling module 130. In the cooling module 130, the cooling jacket 132 is fitted over the outside of the drum 131 to form a cooling environment. After the drum 131 is started, it rotates in a first direction, generating a guiding force to transport the castings into the drum 131. While the castings remain inside the drum 131, the cooling jacket 132 continuously provides cooling. Once the castings have cooled to a preset temperature, the drum 131 switches to a second direction of rotation, driving the castings in the opposite direction towards the output end of the drum 131. Finally, the castings are output through the drum 131, completing the cooling process.

[0048] The casting furnace provided in this embodiment achieves feeding and discharging control of the casting sheets through the bidirectional rotation of the spiral fins 133. This design is simple to operate and highly efficient, eliminating the need for additional feeding and discharging drive mechanisms and simplifying the equipment structure. The sleeve structure of the cooling jacket 132 and the drum 131, combined with the stirring and guiding effect of the spiral fins 133, increases the contact area between the casting sheets and the cooling surface, improving heat exchange efficiency and resulting in more uniform and rapid cooling of the casting sheets. Simultaneously, the seamless connection between the intermediate chamber 120 and the cooling module 130 ensures smooth transfer of the casting sheets, preventing jamming or damage during transport, effectively improving the stability of casting sheet production and the quality of the finished product, and adapting to the needs of large-scale production.

[0049] like Figure 2 and Figure 3 As shown, in one feasible embodiment, the casting furnace further includes a casting guide mechanism 140, which is disposed in the intermediate chamber 120 and is used to guide the castings output from the melting chamber 110 to the cooling module 130.

[0050] In this technical solution, the casting furnace may also include a casting guide mechanism 140. The casting guide mechanism 140 is located within the intermediate chamber 120 and can precisely receive the castings output from the melting chamber 110. Through its directional guiding function, it prevents the castings from shifting, piling up, or colliding and being damaged during transport, ensuring a smooth transport path and improving transport stability. It can accurately guide the castings into designated cooling modules 130, making it particularly suitable for configurations with multiple cooling modules 130. Combined with control valves, it enables flexible switching of the guide channel 141, allowing for casting diversion without manual intervention and significantly improving the automation level of the equipment. Simultaneously, this mechanism shortens the transport distance of the castings from the melting chamber 110 to the cooling module 130, reducing uneven heat loss and laying the foundation for uniform and efficient subsequent cooling processes. This ensures the consistency of the finished casting quality, helps improve production efficiency, and meets the needs of large-scale, continuous production.

[0051] like Figure 2 and Figure 3 As shown, in one feasible embodiment, there are at least two cooling modules 130, and the casting guide mechanism 140 includes at least two guide channels 141, a first control valve 142 and a first drive member 143. Each cooling module 130 is connected to a guide channel 141, and the output end of the first drive member 143 is connected to the first control valve 142. The first control valve 142 is used to control the opening and closing of the guide channel 141.

[0052] In this technical solution, there can be at least two cooling modules 130. When the casting furnace is working, the casting sheets output from the melting chamber 110 enter the intermediate chamber 120 and are received by the casting sheet guiding mechanism 140. The first driving component 143 of this mechanism drives the first control valve 142 to operate according to production needs, controlling the opening and closing of the corresponding guide channel 141. When one cooling module 130 is cooling the casting sheets, the first control valve 142 opens its connected guide channel 141 and closes other channels, allowing the casting sheets to accurately enter the target cooling module 130 through this channel. After the module completes cooling and outputs the casting sheets, or when it is necessary to switch the cooling duration, the first driving component 143 drives the first control valve 142 to switch and open another guide channel 141, allowing subsequent casting sheets to flow into another cooling module 130, realizing the alternating or parallel operation of multiple cooling modules 130, ensuring continuous production.

[0053] In this technical solution, the design of at least two cooling modules 130 paired with multiple guide channels 141 completely solves the production interruption problem caused by the traditional single cooling module 130, significantly improving production continuity and efficiency. The cooperation between the first control valve 142 and the first drive component 143 enables automated and precise switching of the guide channels 141 without manual intervention, reducing operational complexity and labor costs. Each cooling module 130 independently corresponds to one guide channel 141, avoiding flow mixing and blockage during casting transfer and ensuring transfer stability. Simultaneously, single or multiple cooling modules 130 can be flexibly selected to work collaboratively according to the casting cooling process requirements, adapting to different cooling duration requirements and expanding the equipment's applicability. This design allows castings to be processed immediately without waiting for the previous batch to be fully output during the cooling stage, significantly shortening the production cycle and ensuring consistent cooling conditions for each batch of castings, improving the uniformity of finished product quality and meeting the needs of large-scale and diversified production.

[0054] like Figure 2 and Figure 3 As shown, in one feasible embodiment, the cooling module 130 further includes: a drive shaft 134, which passes through the cooling sleeve 132 and is connected to the drum 131; a second drive member 135, which is connected to the drive shaft 134; a vacuum chamber 136, which is sleeved on the outside of the cooling sleeve 132; a seal 137, which is disposed at the connection between the drive shaft 134 and the vacuum chamber 136; and a guide member 138, one end of which is connected to the casting guide mechanism 140 and the other end of which is connected to the drum 131.

[0055] In this technical solution, the cooling module 130 may further include a drive shaft 134, a second drive component 135, a vacuum chamber 136, a seal 137, and a guide component 138. The cooperation between the drive shaft 134 and the second drive component 135 provides a stable and controllable power source for the roller 131. The transmission path is direct and has low loss, and it can precisely adjust the rotation direction and speed of the spiral fins 133, ensuring smooth conveying of the castings during feeding and efficient discharge during unloading. This avoids problems such as casting accumulation and jamming caused by insufficient power or transmission deviation, and improves the smoothness of the cooling process. The vacuum chamber 136 is fitted outside the cooling jacket 132, which can create a stable vacuum or protective atmosphere environment, effectively isolating external air from contact with the castings, preventing oxidation, nitriding, and other reactions of the castings during high-temperature cooling, and ensuring the chemical purity and surface quality of the castings. It is especially suitable for scenarios with stringent processing environment requirements, such as rare earth permanent magnet materials. The seal 137 at the connection between the drive shaft 134 and the vacuum chamber 136 enhances the airtightness of the vacuum chamber 136, preventing vacuum leakage or external gas infiltration, ensuring environmental stability, and reducing uneven casting quality caused by environmental fluctuations during cooling. The guide 138 further optimizes the casting transport path, with its two ends connecting the casting guide mechanism 140 and the roller 131 respectively, forming a directional transport channel. This allows for precise guidance of the casting into the roller 131, preventing displacement and collision when entering the cooling module 130, thus reducing casting damage. Simultaneously, the guide 138 shortens the casting transport gap, reducing heat loss and laying the foundation for subsequent uniform cooling.

[0056] like Figure 2 and Figure 3 As shown, in one feasible embodiment, the casting furnace further includes a receiving container 150, which is arranged at the output end of the cooling module 130.

[0057] like Figure 2 and Figure 3 As shown, in one feasible embodiment, the casting furnace further includes a crushing mechanism 160, which is arranged at the output end of the melting chamber 110.

[0058] In this technical solution, the casting furnace may also include a crushing mechanism 160, which is located at the output end of the melting chamber 110. The crushing mechanism 160 can directly receive the thin casting sheets output from the melting chamber 110 and quickly crush them, transforming the sheet-like casting sheets into uniformly sized fragments. This increases the contact area between the casting sheets and the cooling module 130, accelerates heat exchange efficiency, and avoids the problem of uneven cooling of large casting sheets. Simultaneously, the crushed casting sheets are easier to transport through the guiding mechanism, reducing the risk of blockage and ensuring smooth subsequent cooling and material collection processes. Crushing also reduces the probability of damage to the casting sheets during transport and cooling, improves the consistency of finished product quality, and provides a stable guarantee for large-scale production.

[0059] like Figure 2 and Figure 3 As shown, in one feasible embodiment, the casting furnace further includes: a preparation chamber 170, which is connected to a melting chamber 110; a trolley 180, which is movably disposed within the preparation chamber 170; a water-cooled roller 190 and an tundish 200, the tundish 200 being arranged on one side of the water-cooled roller 190, the water-cooled roller 190 being connected to the trolley 180, the trolley 180 being used to transport the water-cooled roller 190 to the melting chamber 110; and a first valve 210, which is disposed at the connection between the melting chamber 110 and the preparation chamber 170.

[0060] In this technical solution, the casting furnace may further include a preparation chamber 170, a trolley 180, a water-cooled roller 190, and an tundish 200. Before the casting furnace begins operation, the water-cooled roller 190 undergoes pre-processing, and the tundish 200 is installed and debugged within the preparation chamber 170. Subsequently, the trolley 180 starts and moves the water-cooled roller 190 and tundish 200 towards the melting chamber 110. At this time, the first valve 210 opens, providing a passage for the equipment. After the trolley 180 precisely transports the water-cooled roller 190 and tundish 200 to their preset positions within the melting chamber 110, the first valve 210 closes, ensuring a sealed environment within the melting chamber 110. After the casting process for this furnace is completed, the first valve 210 reopens, and the trolley 180 returns the water-cooled roller 190 and tundish 200 to the preparation chamber 170 for cleaning, maintenance, or the next round of pre-processing, preparing for subsequent production.

[0061] In this technical solution, the coordinated design of the preparation chamber 170 and the trolley 180 enables the pretreatment of the water-cooled roller 190 and the tundish 200 outside the melting chamber 110, avoiding the occupation of the melting chamber 110's working time and significantly improving equipment utilization. The controllable movement of the trolley 180 and the linkage with the first valve 210 ensure the accuracy and safety of the conveying process of the water-cooled roller 190 and the tundish 200, while ensuring that the sealed environment of the melting chamber 110 is not affected, meeting the environmental requirements of the casting process. This separate pretreatment and conveying mode reduces the debugging and maintenance time of the equipment in the melting chamber 110, reduces operational complexity, provides strong support for the continuity and stability of casting production, and effectively improves overall production efficiency.

[0062] like Figure 3 As shown, in one feasible embodiment, the casting furnace further includes: a melting crucible 220, which is disposed in the melting chamber 110; and a casting mechanism 230, which is connected to the melting crucible 220.

[0063] In this technical solution, the casting furnace may further include a melting crucible 220 and a casting mechanism 230. During furnace operation, raw materials are fed into the melting crucible 220 within the melting chamber 110 via the feeding chamber 260, and are melted into a qualified molten liquid through heating. After the molten liquid is refined and the temperature reaches the specified standard, the casting mechanism 230, connected to the melting crucible 220, is activated, uniformly and stably conveying the molten liquid to the subsequent tundish 200 or water-cooled roller 190 according to the flow rate and speed set in the process. Subsequently, the molten liquid is rapidly cooled under the action of the water-cooled roller 190 to form castings, laying the foundation for subsequent crushing and cooling processes, thus completing the seamless connection from melting to casting.

[0064] In this technical solution, the melting crucible 220 is built into the melting chamber 110, providing a stable and sealed environment for raw material melting, ensuring the safety of the melting process and the purity of the molten metal. The casting mechanism 230 is directly connected to the melting crucible 220, shortening the molten metal transmission path and reducing heat loss and contamination risks. Its precise flow control function ensures uniform molten metal output, avoiding defects such as uneven thickness and material shortage in the cast sheets, thus improving the quality of the cast sheets. The two work together to achieve integrated operation of melting and casting, simplifying the process, improving production efficiency, and adapting to the needs of large-scale cast sheet production.

[0065] like Figure 3 As shown, in one feasible embodiment, the casting furnace further includes: a measuring chamber 240 connected to the melting chamber 110; and a third valve 250 disposed at the connection between the measuring chamber 240 and the melting chamber 110.

[0066] In this technical solution, the measuring chamber 240 and the melting chamber 110 are connected by a third valve 250, which allows for precise monitoring of the molten metal temperature during the raw material melting and refining stages. The third valve 250 can flexibly control the opening and closing of the two chambers; it is opened during temperature measurement to ensure accurate data, and closed during non-measurement periods to maintain a sealed environment in the melting chamber 110. This avoids casting defects caused by temperature deviations, ensures that the molten metal meets the requirements of the casting process, lays a solid quality foundation for subsequent cooling and forming processes, and significantly improves the performance stability and consistency of the finished castings.

[0067] like Figure 3 As shown, in one feasible embodiment, the casting furnace further includes: a charging chamber 260 connected to the melting chamber 110; and a fourth valve 270 disposed at the connection between the measuring chamber 240 and the melting chamber 110.

[0068] In this technical solution, the feeding chamber 260 is directly connected to the melting chamber 110, providing a dedicated channel for raw material addition. Combined with the on / off control of the fourth valve 270, precise material replenishment can be achieved without disrupting the sealed environment of the melting chamber 110, preventing external gas infiltration from affecting the purity of the molten metal. The flexible valve switching makes the timing of material addition easier to control, ensuring the continuity of the melting process while reducing heat loss during raw material addition. This provides a guarantee for the stable operation of subsequent casting and cooling processes, improving the efficiency and quality consistency of cast sheet production.

[0069] Example like Figure 3 As shown, the casting furnace provided in this embodiment includes a charging chamber 260, a measuring chamber 240, a melting chamber 110, a preparation chamber 170, an intermediate chamber 120, a cooling module 130, and a receiving container 150. The charging chamber 260, measuring chamber 240, and preparation chamber 170 are connected to the melting chamber 110 via valves. The melting chamber 110 is equipped with a melting crucible 220, a casting mechanism 230, and a crushing mechanism 160. The preparation chamber 170 is equipped with a trolley 180, a water-cooled roller 190, and an intermediate ladle 200. The water-cooled roller 190 and the intermediate ladle 200 are mounted on the trolley 180 and enter and exit the melting chamber 110 via a drive device. The lower part of the melting chamber 110 is equipped with an intermediate chamber 120, which is connected to the cooling module 130 via a valve. Depending on the cooling duration, two or more secondary cooling modules 130 can be connected to the intermediate chamber 120 respectively. The intermediate chamber 120 is equipped with a fixed or movable casting sheet guiding mechanism 140, which guides the broken casting sheets to the cooling module 130. The two cooling modules 130 are respectively equipped with the casting sheet guiding mechanism 140, a roller, a valve, and a receiving container 150. The cooling module 130 consists of an outer vacuum chamber 136 and an inner roller 131. The outer vacuum chamber 136 is a sealed chamber that creates a vacuum or atmospheric environment. The inner roller 131 has a double-layer sandwich structure, with cooling water or refrigerant circulating inside the sandwich for cooling. Spiral fins 133 are welded to the inner wall to promote heat conduction. The front of the internal cooling roller 131 is supported by the vacuum chamber 136, and the rear is equipped with a drive shaft 134 that transmits power to the outside of the chamber through a dynamic sealing device. The externally configured second drive component 135 drives the internal cooling roller 131 to rotate. The rear rotating shaft has a double-layer hollow structure to handle the entry and exit of cooling water or refrigerant. The lower part of the cooling module 130 is equipped with a vacuum valve as a fifth valve 280 to achieve connection and disconnection with the outside. The lower part is equipped with a recovery container to collect the cooled castings after the working process.

[0070] After the water-cooled roller 190 in the preparation chamber 170 is processed according to the process requirements and the tundish 200 is installed, it is driven to the melting chamber 110 to wait. The raw material is added to the melting crucible 220 through the feeding chamber 260. After heating until the raw material melts, it is refined according to the process requirements. After temperature measurement, the molten steel is poured evenly into the tundish 200 through the constant flow casting device. The water-cooled roller 190 rotates to carry out the molten steel continuously poured into the tundish 200 and rapidly cool the columnar crystal flakes. The flakes fall into the crushing mechanism 160 for crushing. The crushed flakes flow to the cooling module 130 through the guide pipe in the intermediate chamber 120. The direction of rotation of the internal roller 131 of the cooling module 130 controls whether the material is fed or discharged. During the casting process, the direction of rotation controls the movement of the casting sheet from the feeding side to the rear. At the same time, heat is transferred to the cooling water or refrigerant in the jacket through the inner wall of the internal roller and the fins. After casting is completed, the material is cooled to the furnace exit temperature in the secondary cooling roller 131. After reaching the temperature, the internal roller 131 is rotated in the opposite direction, and the casting sheet moves from the rear to the feeding side. It then enters the recovery container through the vacuum valve, ending the operation of one furnace.

[0071] The casting furnace and casting cooling method provided by this invention include an additional cooling module 130. Broken scales fall into the new cooling module 130 via a guide mechanism. The cooling module 130 rotates in a forward-biased direction, with the scales rotating in the same direction as the spiral fins 133 of the cooling module 130, towards the rear of the module. After cooling, the cooling module 130 rotates in a reverse direction at a fixed frequency (30Hz), and the cooled scales are discharged in the opposite direction of the fins, falling directly into the receiving container 150 through a valve at the bottom of the cooling module 130. A thermocouple 290 is installed inside the cooling module 130 to measure the real-time temperature of the scales, and the real-time rotation frequency of the cooling module 130 is adjusted by measuring the real-time temperature of the scales. When the first cooling module 130 is in a cooling state after the alloy steel molten casting is completed, the scale guide mechanism at the lower end of the crushing mechanism 160 can be rotated to the side of the second cooling module 130. In this way, while the first cooling module 130 cools the scales, the second cooling module 130 can be cast and receive the material. The two sets of cooling modules 130 work together to greatly improve production efficiency. The improved NdFeB alloy cooling process is as follows: ① Molten NdFeB alloy steel refined to a fixed temperature (1480±5℃) is poured through a melting crucible 220 onto a quenching roller rotating at a fixed speed for primary cooling and rapid solidification to form "ribbon-shaped" solid flakes below 800℃; ② The "ribbon-shaped" flakes fall into a crushing mechanism 160 rotating at a fixed frequency for crushing into small flakes; ③ The crushed small flakes fall into a cooling module 130 rotating in the forward direction at a variable frequency for secondary cooling; ④ After the flakes are cooled to the target temperature (60℃), the bottom gate valve of the cooling module 130 is opened, and the cooling module 130 rotates in the reverse direction at a fixed frequency (30Hz). The cooled flakes are discharged in the reverse direction of the fins of the cooling module 130 and fall directly into the receiving container 150 through the bottom gate valve of the cooling module 130.

[0072] To optimize the contact efficiency and heat exchange duration between the cooling fins and the circulating water in the jacket of the cooling module 130, and to avoid the heat exchange efficiency bottleneck in the uniform rotation mode, thereby achieving rapid cooling, given that the real-time return water flow rate of the cooling module 130 is 442 L / min, the real-time return water temperature of the cooling module 130 is 20℃, the specific heat capacity of the fins is 450 J / (kg·K), and the mass of the fins is 800 kg, the following segmented variable frequency cooling model is established: First temperature range - high temperature range (600–800℃): High frequency (60–100Hz) high speed rotation is adopted to accelerate the relative movement between the scales and the wall and fins of the cooling module 130, so that all parts of the scales are in uniform contact with the cylinder wall and fins, avoiding local overheating or overcooling, and increasing the number of heat exchange times per unit time. Second temperature range - medium temperature range (200–600℃): medium frequency (30–60Hz) medium speed rotation is used to extend the contact time and enhance heat transfer. At this time, the temperature gradient of the scales is reduced, and more sufficient heat exchange is required. The third temperature range - low temperature range (60–200℃): low frequency (10–30Hz) low speed rotation is used to reduce scale vibration, while ensuring that residual heat is completely removed and avoiding secondary heating caused by excessive frequency (heat backflow caused by disturbance of argon cooling medium). Based on the actual cooling stage and according to the cooling temperature range of the scales, a piecewise function is constructed for the forward rotation frequency f of the cooling module 130 and the real-time temperature T of the scales: Table 1 Piecewise Function Table

[0073] Based on the piecewise function described above, the actual time it takes for the scales to cool from high temperature to the target temperature (60℃) during the actual cooling process is only 45 minutes, which is much lower than the 305 minutes required for the original structure to cool (based on measured data).

[0074] To verify that the cooling speed of the piecewise function variable frequency drive cooling module 130 is faster than that of the fixed frequency drive cooling module 130, a cooling scale experiment was conducted using a 50Hz power frequency drive cooling module 130. The actual time taken for the scale to cool from high temperature to the target temperature (60℃) was 56 minutes, which is longer than that of the piecewise function variable frequency drive cooling module 130. This further proves that the variable frequency cooling scale method is more reasonable and advanced.

[0075] The embodiments of this application have at least the following beneficial effects: ① By optimizing the equipment structure and operating process, the scale cooling time is greatly shortened, thereby improving production efficiency. Analysis of experimental data shows that the previous solution required three cooling cycles for the scales, with the scales inside the recovery container slowly cooling to the target temperature of 60℃ taking 305 minutes. This solution eliminates two cooling cycles, achieving the target temperature of 60℃ directly through two cooling cycles within the cooling module 130. Furthermore, a piecewise function model for variable frequency cooling was established, and experiments verified that variable frequency cooling is more effective than fixed frequency cooling (to reach the same target temperature of 60℃, fixed frequency cooling takes 56 minutes, while variable frequency cooling only takes 45 minutes). By using the variable frequency drive cooling module 130 to directly cool the scales, the cooling time per furnace cycle is shortened by 305 minutes - 56 minutes - (56 minutes - 45 minutes) = 260 minutes, significantly improving cooling efficiency. ② It saves on argon gas consumption (a single furnace recovery container requires approximately 0.15m³). 3The argon gas used is used to produce 12 batches in 24 hours per furnace. The annual argon gas saved per furnace is 0.15m³ × 12 × 365 = 657m³. 3 The intermediate chamber 120 argon channel has fewer recovery containers, and the amount of argon channeled in the intermediate chamber 120 is reduced, thus achieving the goal of "reducing costs and increasing efficiency"; ③ Improve the quality of the scales. Rapidly cooling the scales for 45 minutes can effectively prevent the growth of scale grains, resulting in better metallographic effects and improved product quality and microstructure consistency. ④ Reduce the amount of material fed into the receiving container 150. After the scales are cooled to the target temperature (60°C) inside the cooling module 130, they are directly dropped into the receiving container 150 through the rotation of the cooling module 130. The original structure required multiple recycling containers, but now the recycling containers are eliminated, saving equipment costs. ⑤ Optimize the production process cycle and improve production efficiency. The production process has been changed from: feeding → melting → casting → primary cooling → crushing → secondary cooling → tertiary cooling → discharge from the tilting machine to: feeding → melting → casting → primary cooling → crushing → secondary cooling → direct discharge from the cooling module 130. The discharge from the tilting machine has been changed to direct discharge from the cooling module 130, eliminating one step, saving labor, and improving production efficiency. Structurally, the new casting furnace adopts a dual cooling module 130 with one supply and one backup. The scales rotate continuously inside the cooling module 130 for dynamic heat exchange and cooling, shortening the cooling time and improving production efficiency. By establishing a piecewise function based on the characteristic relationship between the operating frequency and the scale temperature, the high-temperature, medium-temperature, and low-temperature sections of the cooling process are all controlled by frequency conversion drive to rotate the cooling module 130 for cooling. This optimizes the contact efficiency and heat exchange time between the scales and the inner wall and fins of the cooling module 130, avoiding the heat exchange efficiency bottleneck caused by fixed-frequency drive rotation.

[0076] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0077] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0078] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0079] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for cooling cast sheets, characterized in that, The method for cooling the cast iron sheets is applied to a casting furnace, the casting furnace comprising a melting chamber and at least two cooling modules, each of the cooling modules being connected to the output end of the melting chamber. In response to the casting cooling command, the casting output from the melting chamber is transported to the first cooling module, and the casting is cooled by the first cooling module; After the first period of time, the output end of the melting chamber is connected to another cooling module, and the castings output from the melting chamber are transported to the second cooling module for cooling.

2. The method for cooling cast sheets according to claim 1, characterized in that, The first duration is determined based on the initial temperature of the casting when it is output from the melting chamber, the target cooling temperature of the casting, and the amount of cooling provided by the cooling module per unit time.

3. The method for cooling cast sheets according to claim 2, characterized in that, The value of the first duration is negatively correlated with the initial temperature, and positively correlated with the target cooling temperature and the cooling capacity.

4. The method for cooling cast sheets according to claim 1, characterized in that, The cooling module includes: a drum, a cooling jacket, and spiral fins. The cooling jacket is fitted over the outside of the drum. The step of cooling the casting using the cooling module includes: The monitoring temperature of the castings inside the drum is obtained; The operating frequency of the spiral fins is controlled based on the monitored temperature; The operating frequency is positively correlated with the monitored temperature.

5. The method for cooling cast sheets according to claim 4, characterized in that, The first duration is determined based on the temperature drop of the cast sheet within the drum per unit time.

6. The method for cooling cast sheets according to claim 4, characterized in that, The step of controlling the rotational speed of the spiral fins based on the monitored temperature includes: Set multiple temperature ranges; Construct a function to determine the operating frequency for each temperature range; The operating frequency is determined based on the monitored temperature and multiple operating frequency determination functions.

7. The method for cooling cast sheets according to claim 4, characterized in that, The multiple temperature ranges include at least a first temperature range, a second temperature range, and a third temperature range, with the temperature values ​​decreasing from the first temperature range to the third temperature range; The function for determining the operating frequency corresponding to the first temperature range is: F=0.2T-60 The function for determining the operating frequency corresponding to the second temperature range is: F = 3 / 40 × T + 15 The function for determining the operating frequency corresponding to the third temperature range is: F = (T + 10) / 7 Where F is the operating frequency and T is the monitored temperature.

8. The method for cooling cast sheets according to claim 4, characterized in that, The step of obtaining the monitoring temperature of the casting inside the drum includes: Thermocouples are arranged at the inlet end, outlet end and middle section of the drum; The monitored temperature is obtained based on the average value of multiple thermocouples.

9. The method for cooling cast sheets according to claim 4, characterized in that, Also includes: When the time the casting stays in the drum is greater than a first threshold and the monitored temperature is greater than a second threshold, the current cooling module is disconnected from the melting chamber, and the melting chamber is connected to another cooling module instead.

10. A casting furnace, characterized in that, include A melting chamber and at least two cooling modules, each of the cooling modules being connected to the output of the melting chamber; The cooling module includes a drum, a cooling jacket, and spiral fins. The cooling jacket is sleeved on the outside of the drum, and the spiral fins are rotatably disposed inside the drum. When the drum rotates in a first direction, the casting sheet moves into the drum. When the drum rotates in a second direction, the casting sheet is output through the drum. A controller for performing the casting cooling method as described in any one of claims 1 to 9.

Images