Efficient heat treatment method for double-trolley transfer collaborative trolley furnace

Abstract

The invention discloses an efficient heat treatment method for a double-trolley transfer collaborative trolley furnace, and relates to the technical field of heat treatment technologies. The efficient heat treatment method for the double-trolley transfer collaborative trolley furnace comprises the steps of S1, equipment composition and optimization design, S2, a heat treatment core step, S3, an in-furnace heat treatment process, S4, discharging transfer and alternate feeding efficient connection, and S5, cyclic operation and dynamic adjustment optimization. According to the double breakthrough of the furnace body utilization rate and the production efficiency, through the collaborative design of the double trolleys and the intelligent transfer trolley, the processes of charging, heat treatment and cooling are carried out in parallel, when one trolley carries out heat treatment in the furnace, the other trolley can synchronously complete charging standby, and the time consumed in the alternate furnace entering process is controlled within 15 minutes; and the vacancy waiting time of the furnace body is thoroughly eliminated, the effective utilization rate of the trolley furnace is improved to 85% or above from about 50% in the prior art, the overall heat treatment efficiency is improved by 40%-60%, the material handling capacity in unit time is remarkably increased, and the productivity supply capacity is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of heat treatment technology, and in particular to a high-efficiency heat treatment method for a bogie furnace with dual bogie transfer coordination. Background Technology

[0002] In the field of industrial material heat treatment, bogie hearth furnaces are widely used in annealing, normalizing, and other processes for various metal materials due to their strong adaptability and large load capacity. Traditional bogie hearth furnaces generally adopt a single-car operation mode, with the core operation process being "loading—heat treatment in the furnace—unloading—cooling—unloading—reloading," and each process is sequentially connected. Because a single car needs to simultaneously undertake the dual functions of "carrying material into the furnace" and "cooling and unloading after unloading," when the bogie is carrying high-temperature material out of the furnace for cooling, unloading, and a new round of loading, the bogie hearth furnace body must be idle and waiting, and heat treatment operations cannot be continuously carried out. Data shows that the effective operating time of traditional single-vehicle furnaces accounts for only about 50%, with the furnace body remaining idle for a long time. This not only results in limited processing capacity per unit time and low production efficiency, but also causes a large amount of heat loss due to frequent furnace start-ups and shutdowns or long-term heat preservation, leading to high energy consumption. At the same time, the delay in the connection of serial processes can easily cause temperature fluctuations inside the furnace, affecting the stability of the heat treatment process. This has become a core bottleneck restricting the efficient and low-carbon development of the heat treatment industry. Summary of the Invention

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a high-efficiency heat treatment method for a bogie furnace with dual bogie transfer coordination, which can solve the problems of limited processing capacity per unit time and low production efficiency.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency heat treatment method for a bogie furnace with dual bogie transfer coordination, comprising S1 equipment composition and optimization design, S2 core heat treatment steps, S3 in-furnace heat treatment process, S4 efficient connection between furnace exit transfer and alternating furnace entry, and S5 cyclic operation and dynamic adjustment optimization. The S1 equipment composition and optimization design includes S101 track system optimization and S102 bogie and transfer car adaptation optimization. Among them, the core steps of S2 heat treatment include S201 pre-treatment preparation and charging optimization and S202 trolley transfer and furnace entry coordination optimization.

[0005] Preferably, the S101 track system is optimized as follows: the three sets of ground tracks are arranged in a "symmetrical on both sides + docking in the middle" layout, corresponding to the loading and cooling area (position 1), the transfer transition area (positions 2 and 4), and the furnace body docking area (position 3), respectively, while the other side of the ground track is the standby loading waiting area (position 5); the track on the transfer car and the ground track are precisely aligned, with the error controlled within ±2mm, and are equipped with a wear-resistant and anti-slip track surface coating to reduce transfer resistance; the translation track adopts a double-track parallel structure and is equipped with a servo drive system to ensure that the translation speed of the transfer car is stable at 0.5-1m / s, avoiding material displacement caused by impact.

[0006] Preferably, the S102 trolley and the transfer vehicle are optimized for compatibility: the trolley adopts a lightweight, high-strength alloy frame, with universal guide wheels and positioning pins installed at the bottom, which can quickly and accurately lock with the transfer vehicle track, with a locking response time of ≤3 seconds; the transfer vehicle is equipped with a weight sensor and position detection module to provide real-time feedback on the trolley's loading status and stopping position. When the trolley is not fully locked or overloaded (exceeding the rated load by 10%), a shutdown warning is automatically triggered to improve operational safety; the trolley furnace body is equipped with an optimized sealing and heat insulation design, with high-temperature resistant sealing gaskets used on the contact surfaces between the furnace door and the trolley to reduce heat loss inside the furnace, and multiple layers of insulation added to the side walls of the furnace body, improving insulation efficiency by more than 30%.

[0007] Preferably, the pre-processing and loading optimization in S201 includes: In the charging and cooling area (position 1) on one side of the trolley furnace, the working trolley 1 performs the charging operation: adopting the "layered staggered placement + limit fixing" method, the material spacing is controlled at 5-15cm according to the material size and heat treatment requirements to ensure uniform heat circulation in the furnace and avoid local overheating or uneven cooling; during charging, the adjustable limit device on the trolley is used to fix the material to prevent displacement or deformation during transportation and heat treatment. At the same time, after the second trolley completes the unloading of the previous batch of materials in the standby charging waiting area (position 5) on the other side, it immediately loads a new round of materials to be processed according to the same charging standard. During the unloading process, a buffer lifting structure is used to avoid the high temperature material directly hitting the trolley platform and extend the service life of the equipment.

[0008] Preferably, the S202 trolley transfer and furnace feeding are optimized in a coordinated manner: After the trolley is loaded, it moves along the ground track at a constant speed of 0.3-0.8m / s to the transfer car (position 2). After the transfer car confirms that the trolley is in place through the position detection module, it automatically starts the locking mechanism to complete the fixation. The transfer vehicle moves smoothly along the translation track to the front of the furnace body (position 3). During the movement, it is linked with the furnace body control system to preheat the furnace door sealing area in advance and reduce subsequent temperature fluctuations inside the furnace. After the transfer car is precisely docked with the furnace track, the drive trolley slowly enters the furnace, with the entry speed controlled at 0.2-0.5 m / s to avoid airflow impact causing temperature field disturbance inside the furnace; at the same time, the second car has completed loading and is in standby state at position 5, receiving the furnace heat treatment progress signal in real time through the system to ensure seamless connection.

[0009] Preferably, the S3 furnace in-furnace heat treatment process is as follows: Based on the material type and heat treatment requirements (full annealing, stress-relief annealing, normalizing), an optimized process of "segmented heating + precise heat holding + gradient cooling" is adopted. Heating stage: The heating is divided into two stages. In the initial stage, the temperature is increased to 200-300℃ at a rate of 5-10℃ / min (preheating stage), and held for 1-2 hours to eliminate the initial stress inside the material. Then, the temperature is increased to the target temperature of 250℃-950℃ at a rate of 8-15℃ / min to avoid cracking of the material due to rapid heating. Heat preservation stage: Heat preservation time is 4-15 hours, which is adjusted according to the thickness and composition of the material. The temperature uniformity in the furnace is controlled within ±5℃. The heating power is dynamically adjusted in real time through multi-point temperature sensors to ensure that all materials are heated evenly. Cooling stage: A gradient cooling strategy is adopted, first cooling the furnace at a rate of 3-8℃ / min to 300-580℃ to complete the core transformation process and avoid internal stress caused by excessive cooling.

[0010] Preferably, the S4 furnace exit transfer and alternating furnace entry are efficiently connected: After the heat treatment process is completed, the furnace door opens automatically, and the trolley exits the furnace at a speed of 0.2-0.5 m / s and moves to the transfer car (position 3). The transfer car immediately activates the heat insulation protection device to prevent high temperature radiation from affecting the surrounding equipment and operators. The transfer vehicle quickly moves the trolley to position 1 and starts the external cooling program: select the cooling method according to the material characteristics. Ordinary materials use natural cooling, while materials that need accelerated cooling can be combined with forced air cooling (wind speed controlled at 1-3m / s). Monitor the material temperature in real time during the cooling process. When the temperature drops below 150℃, unloading can be prepared in advance. Synchronized with the trolley transfer and cooling, after the trolley is unloaded, the transfer car immediately moves to position 5 to carry the second trolley, moves smoothly from position 4 to position 3, drives the second trolley to quickly enter the furnace and closes the furnace door, and starts the next round of heat treatment. The entire alternating furnace entry process takes less than 15 minutes, which greatly shortens the furnace body idle time.

[0011] Preferably, the S5 cyclic operation and dynamic adjustment optimization are as follows: After the trolley 1 at position 1 cools to room temperature (or the temperature required by the process), it is quickly unloaded using an automated auxiliary unloading device (hydraulic jack, electric conveyor belt), which improves the unloading efficiency by more than 40%. Then, the material to be processed is reloaded according to the loading standard, and it is recycled into the furnace after the second trolley in the furnace has completed the heat treatment. The system is equipped with an intelligent control module, which can dynamically adjust the heating temperature, holding time, and cooling rate parameters according to the heat treatment effect (hardness, uniformity of structure) of each batch of materials, forming a closed-loop optimization; at the same time, it records the time of each process and the equipment operating status, and generates production reports to facilitate process optimization and equipment maintenance.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. This efficient heat treatment method for bogie furnaces with dual-cart transfer and coordination achieves a dual breakthrough in furnace utilization and production efficiency: Through the coordinated design of dual bogies and intelligent transfer vehicles, the "loading-heat treatment-cooling" process can be carried out in parallel. When one bogie is undergoing heat treatment in the furnace, the other bogie can be loaded and ready at the same time. The alternating loading process takes less than 15 minutes, completely eliminating the idle waiting time of the furnace. The effective utilization rate of the bogie furnace is increased from about 50% in the traditional way to more than 85%, the overall heat treatment efficiency is increased by 40%-60%, the material processing capacity per unit time is significantly increased, and the production capacity is greatly improved.

[0013] 2. This efficient heat treatment method using a dual-trolley transfer and coordination trolley furnace achieves simultaneous improvement in heat treatment process precision and product quality: relying on the optimized process of "segmented heating + precise heat preservation + gradient cooling", coupled with the furnace body's sealed heat insulation design and real-time monitoring by multi-point temperature sensors, the temperature uniformity inside the furnace is controlled within ±5℃, effectively reducing the risk of thermal stress and deformation caused by temperature fluctuations in materials. At the same time, the standardized loading (material spacing 5-15cm) and stable transfer (furnace entry / exit speed 0.2-0.5m / s) of the dual trolleys further ensure the uniformity of material heating and cooling, increasing the product qualification rate by 15%-25%, and can stably adapt to the different heat treatment requirements of various metal materials.

[0014] 3. This efficient heat treatment method using a dual-trolley transfer and coordination system for trolley furnaces significantly reduces energy consumption and overall costs: The furnace body is equipped with multiple layers of insulation, combined with a high-temperature resistant sealing gasket design, increasing insulation efficiency by over 30% and reducing heat loss within the furnace. Simultaneously, the alternating operation of the two trolleys drastically shortens furnace downtime, avoiding the ineffective energy consumption caused by maintaining temperature in traditional methods, resulting in an overall energy consumption reduction of 20%-30%. Furthermore, automated connections reduce equipment start-ups and shutdowns, minimizing material deformation and loss, while the auxiliary unloading device increases unloading efficiency by over 40%, leading to a 15%-20% reduction in overall production costs, achieving a win-win situation for both economic and environmental benefits.

[0015] 4. This efficient heat treatment method for trolley furnaces with dual-trolley transfer coordination achieves a comprehensive upgrade in operational safety and equipment adaptability: the weight sensor, position detection module, and automatic locking mechanism (locking response time ≤3 seconds) on the transfer trolley can provide real-time warnings of overload and inaccurate locking risks; the heat insulation protection device during the furnace cooling stage avoids the hazards of high-temperature radiation, significantly reducing the intensity of manual operation and safety hazards; the equipment adopts a modular design, with precise track alignment (error within ±2mm) and adjustable trolley limits, which can be adapted to different specifications of small-diameter to large-size materials through simple parameter adjustments, making it easy to implement and promote large-scale application in various heat treatment scenarios. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the device of the present invention.

[0017] Attached reference numerals: 1. Trolley; 2. Transfer car; 3. Second trolley; 4. Furnace body. Detailed Implementation

[0018] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0019] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are 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 element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0020] In the description of this invention, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0022] Please see Figure 1 This invention provides a technical solution: a high-efficiency heat treatment method for a bogie furnace with dual-bogie transfer coordination, comprising the following methods, S1 equipment composition and optimized design: The method relies on a highly efficient heat treatment system with optimized structure. Its core configuration includes one high-performance trolley furnace body, two multi-functional work trolleys, one intelligent transfer vehicle, and five sets of high-precision collaborative tracks. The optimized design of each component ensures seamless process integration. S101 Track System Optimization: The three sets of ground tracks are arranged in a "symmetrical on both sides + docking in the middle" layout, corresponding to the charging and cooling area (position 1), the transfer transition area (positions 2 and 4), and the furnace body docking area (position 3), respectively. The other side of the ground track is the standby charging waiting area (position 5). The track on the transfer car is precisely aligned with the ground track, with the error controlled within ±2mm. It is equipped with a wear-resistant and anti-slip track surface coating to reduce transfer resistance. The translation track adopts a double-rail parallel structure and is equipped with a servo drive system to ensure that the translation speed of the transfer car is stable at 0.5-1m / s, avoiding material displacement caused by impact. S102 trolley and transfer trolley compatibility optimization: The working trolley adopts a lightweight high-strength alloy frame, with universal guide wheels and positioning pins installed at the bottom, which can quickly and accurately lock with the transfer trolley track, with a locking response time of ≤3 seconds; The transfer trolley is equipped with a weight sensor and position detection module, which provides real-time feedback on the trolley's loading status and stopping position. When the trolley is not fully locked or overloaded (exceeding the rated load by 10%), an automatic shutdown warning is triggered to improve operational safety; The trolley furnace body is equipped with an optimized sealing and heat insulation design, with high-temperature resistant sealing gaskets used on the furnace door and trolley contact surfaces to reduce heat loss inside the furnace, and multiple layers of insulation added to the furnace body side walls, improving insulation efficiency by more than 30%; S2 heat treatment core steps: S201 Pre-processing and Loading Optimization: In the charging and cooling area (position 1) on one side of the trolley furnace, the working trolley 1 performs the charging operation: adopting the method of "layered staggered placement + limit fixing", according to the material size and heat treatment requirements, the material spacing is controlled at 5-15cm to ensure uniform heat circulation in the furnace and avoid local overheating or uneven cooling; during charging, the adjustable limit device on the trolley is used to fix the material to prevent displacement or deformation during transportation and heat treatment. At the same time, after the second trolley 3 finishes unloading the material of the previous batch in the standby charging waiting area (position 5) on the other side, it immediately loads the new batch of materials to be processed according to the same charging standard. During the unloading process, a buffer lifting structure is used to avoid the high temperature material directly hitting the trolley platform and extend the service life of the equipment. S202 trolley transfer and furnace feeding coordination optimization: After the trolley 1 is loaded, it moves along the ground track at a uniform speed of 0.3-0.8m / s to the transfer car 2 (position 2). After the transfer car confirms that the trolley is in place through the position detection module, it automatically starts the locking mechanism to complete the fixation. The transfer vehicle 2 moves smoothly along the translation track to the front of the furnace body (position 3). During the movement, it is linked with the furnace body control system to preheat the furnace door sealing area in advance and reduce subsequent temperature fluctuations inside the furnace. After the transfer car is precisely docked with the furnace track, the drive trolley 1 slowly enters the furnace 4, with the entry speed controlled at 0.2-0.5 m / s to avoid airflow impact causing temperature field disturbance in the furnace; at the same time, the second trolley 3 has completed loading and is in standby position 5, receiving the furnace heat treatment progress signal in real time through the system to ensure seamless connection. S3 furnace heat treatment process: Based on the material type and heat treatment requirements (full annealing, stress-relief annealing, normalizing), an optimized process of "segmented heating + precise heat holding + gradient cooling" is adopted. Heating stage: The heating is divided into two stages. In the initial stage, the temperature is increased to 200-300℃ at a rate of 5-10℃ / min (preheating stage), and held for 1-2 hours to eliminate the initial stress inside the material. Then, the temperature is increased to the target temperature of 250℃-950℃ at a rate of 8-15℃ / min to avoid cracking of the material due to rapid heating. Heat preservation stage: Heat preservation time is 4-15 hours, which is adjusted according to the thickness and composition of the material. The temperature uniformity in the furnace is controlled within ±5℃. The heating power is dynamically adjusted in real time through multi-point temperature sensors to ensure that all materials are heated evenly. Cooling stage: A gradient cooling strategy is adopted, first cooling the furnace at a rate of 3-8℃ / min to 300-580℃ to complete the core transformation process and avoid internal stress caused by excessive cooling. Efficient connection between S4 furnace tapping and transfer and alternating furnace feeding: After the heat treatment process is completed, the furnace door opens automatically, and the trolley 1 exits the furnace at a speed of 0.2-0.5 m / s and moves to the transfer car 2 (position 3). The transfer car immediately activates the heat insulation protection device to prevent high temperature radiation from affecting the surrounding equipment and operators. The transfer car 2 carries the trolley 1 and quickly moves it to position 1, and starts the external cooling program: select the cooling method according to the material characteristics. Ordinary materials use natural cooling, while materials that need accelerated cooling can be combined with forced air cooling (the wind speed is controlled at 1-3m / s). During the cooling process, the material temperature is monitored in real time. When the temperature drops below 150℃, unloading can be prepared in advance. Synchronized with the transfer and cooling of trolley 1, after the transfer car 2 finishes unloading trolley 1, it immediately moves to position 5 to carry the second trolley 3. After moving smoothly from position 4 to position 3, the second trolley 3 is driven to quickly enter the furnace and the furnace door is closed to start the next heat treatment process. The entire alternating furnace entry process takes less than 15 minutes, which greatly shortens the furnace body idle time. S5 Cyclic Operations and Dynamic Adjustment Optimization: After the trolley 1 at position 1 cools to room temperature (or the temperature required by the process), it is quickly unloaded using an automated auxiliary unloading device (hydraulic jack, electric conveyor belt), which improves the unloading efficiency by more than 40%. Then, the material to be processed is reloaded according to the loading standard, and it is recycled into the furnace after the second trolley 3 in the furnace has completed the heat treatment. The system is equipped with an intelligent control module, which can dynamically adjust the heating temperature, holding time, and cooling rate parameters according to the heat treatment effect (hardness, uniformity of structure) of each batch of materials, forming a closed-loop optimization; at the same time, it records the time of each process and the equipment operating status, and generates production reports to facilitate process optimization and equipment maintenance. Furthermore, this method achieves a dual breakthrough in furnace utilization and production efficiency: through the collaborative design of dual trolleys and intelligent transfer vehicles, the processes of "loading - heat treatment - cooling" can be carried out in parallel. When one trolley is undergoing heat treatment in the furnace, the other trolley can be loaded and ready at the same time. The alternating furnace loading process takes less than 15 minutes, completely eliminating the furnace idle time. The effective utilization rate of the trolley furnace has increased from the traditional 50% to more than 85%, the overall heat treatment efficiency has increased by 40%-60%, the material processing capacity per unit time has increased significantly, and the production capacity has been greatly improved. Furthermore, this method achieves simultaneous improvement in heat treatment process precision and product quality: relying on the optimized process of "segmented heating + precise heat preservation + gradient cooling", coupled with the furnace body sealing and heat insulation design and real-time monitoring by multi-point temperature sensors, the temperature uniformity inside the furnace is controlled within ±5℃, effectively reducing the risk of thermal stress and deformation caused by temperature fluctuations in materials. At the same time, the standardized loading of dual trolleys (material spacing 5-15cm) and stable transfer (furnace entry / exit speed 0.2-0.5m / s) further ensures the uniformity of material heating and cooling, increasing the product qualification rate by 15%-25%, and can stably adapt to different heat treatment requirements of various metal materials. Furthermore, this method achieves a significant reduction in energy consumption and overall cost: the furnace body is equipped with multiple layers of insulation, combined with a high-temperature resistant sealing gasket design, which improves insulation efficiency by more than 30% and reduces heat loss inside the furnace; at the same time, the alternating operation of the two trolleys greatly shortens the furnace body's idle time, avoiding the ineffective energy consumption caused by the furnace body maintaining temperature in the traditional mode, reducing overall energy consumption by 20%-30%; in addition, automated connection reduces the number of equipment start-ups and shutdowns, reduces material deformation and loss, and the auxiliary unloading device improves unloading efficiency by more than 40%, reducing overall production costs by 15%-20%, achieving a win-win situation for both economic and environmental benefits; Furthermore, this method achieves a comprehensive upgrade in operational safety and equipment adaptability: the weight sensor, position detection module, and automatic locking mechanism (locking response time ≤ 3 seconds) on the transfer vehicle can provide real-time warnings of overweight and inaccurate locking risks; the heat insulation protection device during the furnace cooling stage avoids the hazards of high-temperature radiation, significantly reducing the intensity of manual operation and safety hazards; the equipment adopts a modular design, with precise track alignment (error within ±2mm) and adjustable trolley limits, and can be adapted to different specifications of small-diameter to large-size materials through simple parameter adjustments, making it easy to implement and promote large-scale application in various heat treatment scenarios; Example 1: This process is carried out during the complete annealing process in the bogie hearth furnace. When the bogie hearth furnace is used for heat treatment of annealed steel, the material is loaded onto one side of the bogie hearth furnace. After loading, the bogie moves to the transfer car. The transfer car is then moved to the position of the bogie hearth furnace body and drives the bogie into the bogie hearth furnace for heat treatment. At the same time, the material is loaded onto the bogie on the other side and waits. When the material is heated to the target temperature of 850°C, it is held at that temperature for 8 hours. After the holding time is 8 hours, the material is cooled to about 500°C in the furnace. The bogie is then immediately removed from the furnace and transferred to the transfer car. The transfer car is then moved to an empty position on the other side for cooling. At the same time, the bogie that has been loaded is transferred to the position of the bogie hearth furnace body for loading. After cooling is completed, the above steps are repeated for production. Example 2: This process is implemented during stress-relief annealing production in a bogie hearth furnace. When performing stress-relief annealing steel heat treatment in a bogie hearth furnace, material is loaded onto a bogie on one side of the furnace. After loading, the bogie moves to a transfer car, which then moves to the furnace body and drives the bogie into the furnace for heat treatment. Simultaneously, material is loaded onto a bogie on the other side and left to heat. When the material is heated to the target temperature of 300°C, it is held at that temperature for 8 hours before being removed from the furnace. The bogie is then immediately removed from the furnace and transferred to a transfer car, which moves it to an empty position on the other side for cooling. At the same time, the loaded bogie is transferred to the furnace body via the transfer car for loading. After cooling, the above steps are repeated for production.

[0023] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A high-efficiency heat treatment method for a bogie furnace with dual-car transfer coordination, comprising S1 equipment composition and optimized design, S2 core heat treatment steps, S3 in-furnace heat treatment process, S4 efficient connection between furnace exit transfer and alternating furnace entry, and S5 cyclic operation and dynamic adjustment optimization, characterized in that: The composition and optimization design of the S1 equipment includes the optimization of the S101 track system and the optimization of the S102 trolley and transfer vehicle adaptation. Among them, the core steps of S2 heat treatment include S201 pre-treatment preparation and charging optimization and S202 trolley transfer and furnace entry coordination optimization.

2. The efficient heat treatment method of a bogie furnace with dual-bogie transfer coordination according to claim 1, characterized in that: The S101 track system is optimized as follows: the three sets of ground tracks are arranged in a "symmetrical on both sides + docking in the middle" layout, corresponding to the loading and cooling area (position 1), the transfer transition area (positions 2 and 4), and the furnace body docking area (position 3), respectively. The other side of the ground track is the standby loading waiting area (position 5). The track on the transfer car is precisely aligned with the ground track, with the error controlled within ±2mm. It is equipped with a wear-resistant and anti-slip track surface coating to reduce transfer resistance. The translation track adopts a double-track parallel structure and is equipped with a servo drive system to ensure that the translation speed of the transfer car is stable at 0.5-1m / s, avoiding material displacement caused by impact.

3. The efficient heat treatment method of a bogie furnace with dual-bogie transfer coordination according to claim 1, characterized in that: The S102 trolley and transfer vehicle are optimized for compatibility: the trolley adopts a lightweight, high-strength alloy frame, with universal guide wheels and positioning pins installed at the bottom, which can quickly and accurately lock with the transfer vehicle track, with a locking response time of ≤3 seconds; the transfer vehicle is equipped with a weight sensor and position detection module, which provides real-time feedback on the trolley's loading status and stopping position. When the trolley is not fully locked or overloaded (exceeding the rated load by 10%), a shutdown warning is automatically triggered to improve operational safety; the trolley furnace body is equipped with an optimized sealing and heat insulation design, with high-temperature resistant sealing gaskets used on the contact surfaces between the furnace door and the trolley to reduce heat loss inside the furnace, and multiple layers of insulation added to the side walls of the furnace body, improving insulation efficiency by more than 30%.

4. The efficient heat treatment method of a bogie furnace with dual-bogie transfer coordination according to claim 1, characterized in that: S201 Pre-processing and Loading Optimization: In the charging and cooling area (position 1) on one side of the trolley furnace, the working trolley 1 performs the charging operation: adopting the "layered staggered placement + limit fixing" method, the material spacing is controlled at 5-15cm according to the material size and heat treatment requirements to ensure uniform heat circulation in the furnace and avoid local overheating or uneven cooling; during charging, the adjustable limit device on the trolley is used to fix the material to prevent displacement or deformation during transportation and heat treatment. At the same time, after the second trolley completes the unloading of the previous batch of materials in the standby charging waiting area (position 5) on the other side, it immediately loads a new round of materials to be processed according to the same charging standard. During the unloading process, a buffer lifting structure is used to avoid the high-temperature materials directly hitting the trolley platform and extend the service life of the equipment.

5. The efficient heat treatment method for a bogie furnace with dual-bogie transfer coordination according to claim 1, characterized in that: The S202 trolley transfer and furnace feeding coordination optimization: After the trolley is loaded, it moves along the ground track at a constant speed of 0.3-0.8m / s to the transfer car (position 2). After the transfer car confirms that the trolley is in place through the position detection module, it automatically starts the locking mechanism to complete the fixation. The transfer vehicle moves smoothly along the translation track to the front of the furnace body (position 3). During the movement, it is linked with the furnace body control system to preheat the furnace door sealing area in advance and reduce subsequent temperature fluctuations inside the furnace. After the transfer car is precisely docked with the furnace track, the drive trolley slowly enters the furnace, with the entry speed controlled at 0.2-0.5 m / s to avoid airflow impact causing temperature field disturbance inside the furnace; at the same time, the second car has completed loading and is in standby state at position 5, receiving the furnace heat treatment progress signal in real time through the system to ensure seamless connection.

6. The efficient heat treatment method of a bogie furnace with dual-bogie transfer coordination according to claim 1, characterized in that: The S3 furnace in-furnace heat treatment process: Based on the material type and heat treatment requirements (full annealing, stress-relief annealing, normalizing), an optimized process of "segmented heating + precise holding + gradient cooling" is adopted. Heating stage: The heating is divided into two stages. In the initial stage, the temperature is increased to 200-300℃ at a rate of 5-10℃ / min (preheating stage), and held for 1-2 hours to eliminate the initial stress inside the material. Then, the temperature is increased to the target temperature of 250℃-950℃ at a rate of 8-15℃ / min to avoid cracking of the material due to rapid heating. Heat preservation stage: Heat preservation time is 4-15 hours, which is adjusted according to the thickness and composition of the material. The temperature uniformity in the furnace is controlled within ±5℃. The heating power is dynamically adjusted in real time through multi-point temperature sensors to ensure that all materials are heated evenly. Cooling stage: A gradient cooling strategy is adopted, first cooling the furnace at a rate of 3-8℃ / min to 300-580℃ to complete the core transformation process and avoid internal stress caused by excessive cooling.

7. The efficient heat treatment method of a bogie furnace with dual-bogie transfer coordination according to claim 1, characterized in that: The efficient connection between S4 furnace exit transfer and alternating furnace entry is achieved: After the heat treatment process is completed, the furnace door opens automatically, and the trolley exits the furnace at a speed of 0.2-0.5 m / s and moves to the transfer car (position 3). The transfer car immediately activates the heat insulation protection device to prevent high temperature radiation from affecting the surrounding equipment and operators. The transfer vehicle quickly moves the trolley to position 1 and starts the external cooling program: select the cooling method according to the material characteristics. Ordinary materials use natural cooling, while materials that need accelerated cooling can be combined with forced air cooling (wind speed controlled at 1-3m / s). Monitor the material temperature in real time during the cooling process. When the temperature drops below 150℃, unloading can be prepared in advance. Synchronized with the trolley transfer and cooling, after the trolley is unloaded, the transfer car immediately moves to position 5 to carry the second trolley, moves smoothly from position 4 to position 3, drives the second trolley to quickly enter the furnace and closes the furnace door, and starts the next round of heat treatment. The entire alternating furnace entry process takes less than 15 minutes, which greatly shortens the furnace body idle time.

8. The efficient heat treatment method of a bogie furnace with dual-bogie transfer coordination according to claim 1, characterized in that: The S5 cyclic operation and dynamic adjustment optimization: After the trolley 1 at position 1 cools to room temperature (or the temperature required by the process), it is quickly unloaded using an automated auxiliary unloading device (hydraulic jack, electric conveyor belt), which improves the unloading efficiency by more than 40%. Then, the material to be processed is reloaded according to the loading standard, and it is recycled into the furnace after the second trolley in the furnace has completed the heat treatment. The system is equipped with an intelligent control module, which can dynamically adjust the heating temperature, holding time, and cooling rate parameters according to the heat treatment effect (hardness, uniformity of structure) of each batch of materials, forming a closed-loop optimization; at the same time, it records the time of each process and the equipment operating status, and generates production reports to facilitate process optimization and equipment maintenance.

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