Aluminum material processing device capable of synchronously performing extrusion and heat treatment

Abstract

The invention discloses an aluminum material processing device capable of synchronously performing extrusion and heat treatment, and relates to the technical field of aluminum material processing. The device comprises an extruding machine, a two-section type heating heat treatment furnace, a guide mechanism, a clamping and conveying mechanism and a quenching box, the two-section type heating heat treatment furnace comprises a conical heating furnace and a cylindrical heating furnace, and the conical heating furnace is fixed to a rack of the extruding machine and located between an extruding die outlet and an extruding machine front beam outlet; the cylindrical heating furnace is positioned between an outlet of the extruding machine and the quenching box. By arranging the two-section type heating heat treatment furnace, extrusion and heat treatment are continuously and synchronously carried out on line, the quenching transfer time is completely eliminated, the extrusion speed and the mechanical property of the profile are remarkably improved, meanwhile, quenching deformation is effectively reduced, the performance consistency of the head and the tail of the profile is guaranteed, and the yield is greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of aluminum processing technology, and in particular relates to an aluminum processing apparatus that performs extrusion and heat treatment simultaneously. Background Technology

[0002] Ultra-high strength 6XXX series Al-Mg-Si aluminum alloys (especially grades with yield strength requirements exceeding 350 MPa) have broad application prospects in aerospace, rail transportation, and other fields due to their excellent comprehensive properties. The strength of these alloys is mainly obtained through solution quenching followed by artificial aging treatment after extrusion forming.

[0003] In traditional extrusion production processes, there is a key technical contradiction: to improve production efficiency and ensure sufficient re-dissolution of reinforcing phases such as Mg2Si, it is desirable to use a higher extrusion speed. However, this leads to the accumulation of deformation heat, causing the profile exit temperature to be too high (easily exceeding the overheating temperature), resulting in defects such as surface roughness, grain boundary melting, and even tearing. Conversely, reducing the extrusion speed to control the temperature will result in excessive temperature drop of the profile during its journey from the die exit to the quenching box, insufficient solid solution of the reinforcing phase, and prolonged quenching transfer time. Ultimately, the aging strengthening effect is insufficient, the mechanical properties do not meet the standards, and the performance consistency of the profile head and tail is poor, resulting in a low yield.

[0004] In existing technologies, some attempts have been made to solve the above problems by adding heating or heat preservation devices between the extruder and the quenching box. For example: Patent CN104060059B provides a high-strength aluminum alloy online quenching system, which utilizes an online holding furnace to hold or heat the extruded profile before quenching. However, the heating devices in this holding furnace are unevenly distributed, failing to heat all parts of the profile uniformly. Furthermore, the numerous support rollers below the profile significantly affect the uniformity of heating. In summary, although this device uses a holding furnace to heat and hold the profile, the heating uniformity is poor, and the bottom support rollers cause localized cooling of the profile, affecting the solution treatment effect. Patent number CN103160659B describes a clamp-type compact online quenching system. This equipment uses a mobile ultra-high temperature heating method for heating and a jet cooling device for quenching to achieve the solution treatment and quenching effects of the profiles. However, this equipment requires the installation of mobile equipment for the heating and quenching devices, placing large space requirements on existing extruders and quenching chambers. Furthermore, it demands a high degree of automation matching between the related equipment and the extruder's extrusion speed, resulting in significant investment. In summary, this device not only has a complex structure but also places extremely high demands on production line space and automated synchronous control, leading to high modification costs. Patent No. CN118204385B provides a method for preparing high-strength aluminum alloy profiles and its production system. The system only heats the profiles in the space between the extruder outlet and the quenching box. However, when the space is small, it is difficult to achieve a perfect solution effect in terms of heating efficiency. In addition, the high temperature before quenching has the disadvantage of large deformation during quenching. In general, the device only has one heating stage, making it difficult to achieve perfect solution within a limited stroke. Furthermore, the high temperature before quenching poses a high risk of deformation.

[0005] In summary, existing technologies have failed to effectively address the requirements of "high-speed extrusion," "full solution treatment," and "low quenching deformation." Therefore, developing a novel processing device that can significantly improve production efficiency and yield while ensuring profile quality has become a pressing technical problem in this field. Summary of the Invention

[0006] The purpose of this invention is to provide an aluminum processing device that performs extrusion and heat treatment simultaneously. By integrating a two-stage heating and heat treatment furnace and a precise temperature control system, it solves the problems of low efficiency, uneven performance, and large quenching deformation caused by the separation of extrusion and heat treatment in the prior art.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention is an aluminum processing device that performs extrusion and heat treatment simultaneously, including an extruder, a two-stage heating and heat treatment furnace, a guiding mechanism, a clamping mechanism, and a quenching box. The two-stage heating and heat treatment furnace includes a conical heating furnace and a cylindrical heating furnace. The conical heating furnace is fixed on the frame of the extruder and located between the extrusion die outlet and the front beam outlet of the extruder. The cylindrical heating furnace is located between the extruder outlet and the quenching box. The guiding mechanism is located between the conical heating furnace and the cylindrical heating furnace, and the clamping mechanism is located between the cylindrical heating furnace and the quenching box; It also includes a control module and a temperature detector, a first hot air circulation mechanism, and a second hot air circulation mechanism. The temperature detector is installed at the feed inlet and outlet of the conical heating furnace and the feed end of the cylindrical heating furnace. The control module is connected to the temperature detector, the first hot air circulation mechanism, the second hot air circulation mechanism, the conical heating furnace, and the cylindrical heating furnace, and is used to control the hot air circulation mechanism according to the feedback signal of the temperature detector to independently adjust the temperature inside the conical heating furnace and the cylindrical heating furnace.

[0008] The present invention is further configured such that the conical heating furnace includes a No. 1 furnace top cover and a No. 1 furnace bottom body connected by hinges. Both the No. 1 furnace top cover and the No. 1 furnace bottom body have furnace inner plates fixed inside. Ventilation holes are evenly distributed on the furnace inner plates. The internal area formed by the No. 1 furnace top cover and the furnace inner plate and the internal area formed by the No. 1 furnace bottom body and the furnace inner plate are both the No. 1 furnace cavity. The No. 1 furnace cavity is connected to the first hot air circulation mechanism. The feed inlet is formed by semi-circular holes on the top cover and the bottom body of the No. 1 furnace. The cylindrical heating furnace includes a second furnace cover and a second furnace lower body connected by hinges. The second furnace chamber is installed inside both the second furnace cover and the second furnace lower body. The second furnace chamber is connected to the second hot air circulation mechanism. The second furnace chamber is connected to the internal area of ​​the cylindrical heating furnace through evenly distributed vent holes on the inner side. A temperature detector is fixed at the feed end of the second furnace chamber. The lower body of the conical heating furnace is semi-conical in shape with a cone angle of 0-15°. The furnace body is placed horizontally and has a length of 1.0-3.0m. The cylindrical heating furnace has a rectangular shape and a semi-circular internal cavity. The furnace is placed horizontally and has a length of 0.5m-2.0m.

[0009] The present invention is further configured such that a No. 1 conveying mechanism is fixed inside the lower body of the No. 1 furnace by a translation and tilting mechanism. The No. 1 conveying mechanism includes a No. 1 roller frame and a group of No. 1 conveying rollers evenly distributed on it. Both ends of each No. 1 conveying roller are movably connected to the No. 1 roller frame. The No. 1 conveying roller is a high-temperature resistant felt roller. The distance between two adjacent No. 1 conveying rollers is 40cm.

[0010] The present invention is further configured such that the translation and tilting mechanism includes a first adjustment component located on the bottom side of the feed end of the first roller frame and a second adjustment component located on the bottom side of the discharge end, for adjusting the spatial posture of the first conveying mechanism; The No. 1 adjustment component includes two symmetrically arranged No. 1 hydraulic connection structures. Each No. 1 hydraulic connection structure includes a No. 1 hydraulic column fixed on the lower body of the No. 1 furnace. The output end of the No. 1 hydraulic column is connected to the bottom of the No. 1 roller frame through a U-shaped connecting plate. The second adjustment component includes two symmetrically arranged second hydraulic connection structures. The second hydraulic connection structure includes a second hydraulic column and a U-shaped slide. The second hydraulic column is fixed to the inner plate of the furnace in the lower body of the first furnace. A connecting plate is fixed to the output end of the second hydraulic column. The connecting plate is movably connected to the bottom of the U-shaped slide. A groove is opened at the bottom of the discharge end of the first roller frame. The U-shaped slide is slidably connected in the corresponding groove.

[0011] The present invention is further configured such that both the guiding mechanism and the clamping mechanism are provided with a lifting seat and a pair of roller assemblies arranged in upper and lower mirror images; The lifting platform includes a base plate, hydraulic support columns, and a top plate. The top plate is fixed to the top of the base plate by a set of symmetrically arranged hydraulic support columns. The lifting seat of the guide mechanism is the No. 1 lifting seat, and the pair of roller assemblies of the guide mechanism is the guide roller assembly. The guide assembly includes a lower guide roller and an upper guide roller. The two ends of the lower guide roller are movably connected to the top surface of the No. 1 lifting seat base plate, and the two ends of the upper guide roller are movably connected to the bottom surface of the No. 1 lifting seat top plate. The lifting seat of the pinch conveying mechanism is the second lifting seat, and the pair of roller assemblies of the pinch conveying mechanism are pinch conveying roller assemblies. The pinch conveying roller assembly includes a lower pinch conveying structure and an upper pinch conveying structure. The lower pinch conveying structure includes a lower pinch conveying roller and a lower driving motor. The output shaft of the lower driving motor is connected to one end of the lower pinch conveying roller. Both ends of the lower pinch conveying roller are movably connected to the top surface of the bottom plate of the second lifting seat. The lower driving motor is fixed on the top surface of the bottom plate of the second lifting seat. The upper pinch conveying structure includes an upper pinch conveying roller and an upper driving motor. The output shaft of the upper driving motor is connected to one end of the upper pinch conveying roller. Both ends of the upper pinch conveying roller are movably connected to the bottom surface of the top plate of the second lifting seat. The upper driving motor is fixed on the bottom surface of the top plate of the second lifting seat; Among them, the first lifting seat of the guiding mechanism adjusts its height through its own hydraulic support column to ensure the centering of the profile; The second lifting seat of the pinch conveying mechanism adjusts its height through its own hydraulic support column, and the lower pinch conveying roller and the upper pinch conveying roller are respectively driven by the lower driving motor and the upper driving motor to pinch and ensure the centered operation of the profile.

[0012] The present invention is further provided that a second conveying mechanism is arranged inside the cylindrical heating furnace. The second conveying mechanism includes a hydraulic telescopic column, a second roller rack and second conveying rollers. The bottom of the second roller rack is fixed inside the second furnace lower body through the hydraulic telescopic column, and the second conveying rollers are uniformly distributed inside the second roller rack.

[0013] The present invention is further provided that the second roller rack is of a "U" - shaped structure; The first lifting seat of the guiding mechanism is fixed at one end of the second roller rack close to the conical heating furnace; The second lifting seat of the pinch conveying mechanism is fixed at one end of the second roller rack close to the quenching tank.

[0014] The present invention is further provided that the first hot - air circulation mechanism and the second hot - air circulation mechanism are two independent hot - air circulation mechanisms; The hot - air circulation mechanism includes a circulation fan, a heating element, a air supply duct, and a return air duct; The intake end of the circulation fan of the first hot - air circulation mechanism is connected to the first furnace cavity of the conical heating furnace through the corresponding return air duct, and is used to continuously suck gas (mainly the hot air with a slightly decreased temperature) from the furnace cavity. The sucked - back gas is mixed with a small amount of supplemented fresh air inside the mechanism, flows through the heating element and is quickly and evenly reheated to the set temperature. The reheated high - speed air flow, through the corresponding air supply duct, is respectively sprayed back into the furnace cavities of the conical heating furnace and the cylindrical heating furnace, directly impacting the surface of the aluminum profile for heat exchange; The air inlet of the circulating fan of the second hot air circulation mechanism is connected to the second furnace chamber of the cylindrical heating furnace through the corresponding return air channel. It is used to continuously draw gas (mainly hot air with a slightly lower temperature) from the furnace chamber. The drawn-back gas mixes with a small amount of supplemented fresh air inside the mechanism and flows through the heating element to be quickly and evenly reheated to the set temperature. The high-speed airflow after being reheated is then sprayed back into the furnace chambers of the conical heating furnace and the cylindrical heating furnace through the corresponding air supply pipes, directly impacting the surface of the aluminum profile for heat exchange.

[0015] The invention is further configured such that the control module is configured to receive temperature detection signals from the conical heating furnace and the cylindrical heating furnace respectively, and independently issue control commands to the first hot air circulation mechanism and the second hot air circulation mechanism to achieve independent and precise closed-loop control of the temperature inside the conical heating furnace and the cylindrical heating furnace.

[0016] The present invention has the following beneficial effects: 1. This invention achieves true online solution treatment by immediately installing a conical heating furnace at the extrusion die outlet, allowing the profiles just extruded from the die to enter a precise solution treatment temperature range of 540-560℃. This completely eliminates the unavoidable "quenching transfer time" in traditional offline heat treatment or online heat preservation processes, effectively preventing the precipitation of strengthening phases during the transfer process and avoiding the resulting strength loss. Furthermore, this invention employs a unique two-stage independent temperature control design, combined with closed-loop control of multiple temperature detectors and control modules installed at the conical furnace inlet and outlet and the cylindrical furnace inlet, ensuring the profiles are properly heated. The precise and uniform temperature during the solution treatment stage allows strengthening elements such as Mg and Si to be fully dissolved, significantly improving the supersaturation of the matrix and laying a solid foundation for subsequent aging strengthening. In addition, when extrusion bar changing or profile movement is paused, the control system can automatically adjust the hot air parameters to maintain the solution treatment temperature in the furnace, ensuring that the head and tail materials undergo a completely consistent heat treatment process. This results in uniform mechanical properties (such as yield strength and tensile strength) of the head, middle, and tail of the profile, reducing the need to cut off the head and tail due to substandard performance. This achieves full online solution treatment and consistent performance, greatly improving the yield.

[0017] 2. The present invention adopts an innovative process route of "rapid extrusion at low billet temperature (400 - 450 °C) + online precise supplementary heating". The relatively low billet temperature effectively controls the generation of deformation heat, avoiding defects such as overburning, surface roughness, and drawing cracks caused by excessive profile outlet temperature (>530 °C) from the source. Since it no longer solely relies on deformation heat to reach the solution temperature, the production line gets rid of the constraint of being forced to limit the extrusion speed to control the outlet temperature. Practice shows that after using this device, the extrusion outlet speed can be increased by 10% - 28% compared with the traditional process (for example, for 6056 alloy, it is increased from 4.7 m / min to 5.2 m / min), significantly improving the production efficiency and achieving high-speed production while ensuring product quality.

[0018] 3. The present invention introduces a cylindrical heating furnace as the second treatment area. After the profile completes high-temperature solution, instead of directly quenching, it enters this area for precise temperature reduction and temperature equalization treatment (- °C). The design of this "temperature reduction buffer zone" enables the overall temperature of the profile to be in a relatively low and more uniform state when it enters the quenching tank, greatly alleviating the severe thermal stress and tissue stress caused by the instantaneous large temperature difference (ΔT), thus effectively controlling the quenching deformation and warping of the profile. This characteristic is particularly beneficial for ultra-high-strength aluminum alloys with high quenching sensitivity (such as 6XXX series alloys with a yield strength requirement exceeding 350 MPa) and thin-walled, complex cross-section profiles, significantly reducing quenching deformation, improving the dimensional accuracy and application range of products, broadening the production range of high-quality aluminum profiles, and reducing the difficulty and cost of subsequent straightening processes.

[0019] 4. The translation and tilting mechanism in the conical heating furnace of the present invention can precisely adjust the first conveyor mechanism, flexibly adapt to different specifications of profiles and the slight deviation of the extrusion center line caused by equipment debugging, ensure that the profile is always centered and travels smoothly, and effectively prevent surface scratches. The "U-shaped" second roller rack integrates the functions of conveying in the cylindrical heating furnace, guiding in front of the furnace, and clamping and feeding behind the furnace into a rigid whole, ensuring extremely high running coaxiality and stability of the profile during the second treatment and discharging processes. The entire system is intelligently driven by a control module, can automatically adapt to complex working conditions such as extrusion speed increase, speed stabilization, speed reduction, and rod replacement and shutdown, and realizes independent, precise, and closed-loop control of the temperatures of the two heating furnaces, ensuring the continuity and stability of the full-process production and the high consistency of product quality.

[0020] Of course, it is not necessary for any product implementing the present invention to achieve all the above advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below.

[0022] Figure 1A schematic diagram of an aluminum processing device that performs extrusion and heat treatment simultaneously.

[0023] Figure 2 This is a cross-sectional view of the conical heating furnace of the present invention.

[0024] Figure 3 This is a schematic diagram showing the connection between the first conveying mechanism and the translation and tilting mechanism of the present invention.

[0025] Figure 4 This is a structural diagram of the guiding mechanism, the cylindrical heating furnace, and the clamping mechanism.

[0026] Figure 5 This is a cross-sectional structural schematic diagram of the cylindrical heating furnace of the present invention.

[0027] Figure 6 This is a schematic diagram of the installation of the second conveying mechanism and clamping mechanism of the present invention.

[0028] Figure 7 This is a comparison chart of the age hardening curves of the 6056 alloy in Example 1 using the method of the present invention and the comparative example method.

[0029] Figure 8 This is a comparison chart of the age hardening curves of the 6110A alloy in Example 1 using the method of the present invention and the comparative example method.

[0030] Figure 9 This is a comparison chart of the age hardening curves of the 6013 alloy in Example 1 using the method of the present invention and the comparative example method.

[0031] The attached diagram lists the components represented by each number as follows: 100. Conical heating furnace; 110. Furnace No. 1 top cover; 120. Furnace No. 1 lower body; 130. Furnace inner plate; 101. Furnace No. 1 cavity; 200. Conveying Mechanism No. 1; 210. Roller Frame No. 1; 211. Slide Groove; 220. Conveying Roller No. 1; 300. Translation and tilting mechanism; 310. No. 1 hydraulic connection structure; 311. No. 1 hydraulic column; 312. U-shaped connecting plate; 320. No. 2 hydraulic connection structure; 321. No. 2 hydraulic column; 322. U-shaped slide; 400. Guiding mechanism; 410. No. 1 lifting seat; 420. Lower guide roller; 430. Upper guide roller; 500. Cylindrical heating furnace; 510. Top cover of furnace No. 2; 520. Lower body of furnace No. 2; 501. Furnace cavity No. 2; 600. Conveying mechanism No. 2; 610. Hydraulic telescopic column; 620. Roller frame No. 2; 630. Conveying roller No. 2; 700. Pinch-feeding mechanism; 710. Second lifting seat; 720. Lower pinch-feeding structure; 721. Lower pinch-feeding roller; 722. Lower drive motor; 730. Upper pinch-feeding structure; 731. Upper pinch-feeding roller; 732. Upper drive motor; 800, Quenching Box. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0033] Example 1 Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The present invention is an aluminum material processing device that performs extrusion and heat treatment simultaneously, including an extruder, a two-stage heating and heat treatment furnace, a guiding mechanism 400, a clamping mechanism 700, and a quenching box 800. The two-stage heating and heat treatment furnace consists of a conical heating furnace 100 and a cylindrical heating furnace 500. The conical heating furnace 100 is directly fixed on the frame of the extruder and located between the extrusion die outlet and the front beam outlet of the extruder, and is used to capture the high-temperature profile that has just been extruded from the die. The cylindrical heating furnace 500 is located between the extruder outlet and the quenching box 800, and is used for the second stage of processing of the profiles. The guiding mechanism 400 is located between the two heating furnaces, and the clamping mechanism 700 is located between the cylindrical heating furnace 500 and the quenching box 800.

[0034] Specifically, it also includes a control module and temperature detectors, a first hot air circulation mechanism, and a second hot air circulation mechanism. The temperature detectors are mainly located at the feed inlet and outlet of the conical heating furnace 100, and at the feed end of the cylindrical heating furnace 500.

[0035] Furthermore, the control module is connected to the temperature detector, the first hot air circulation mechanism, the second hot air circulation mechanism, the conical furnace 100, and the cylindrical furnace 500, and is used to control the hot air circulation mechanism according to the feedback signal from the temperature detector to independently adjust the temperature inside the conical furnace 100 and the cylindrical furnace 500.

[0036] The operation process of this embodiment is as follows: After the aluminum material is extruded from the extrusion die, it first enters the conical heating furnace 100. The temperature detector at the feed port monitors the initial temperature of the profile in real time. Based on this, the control module instructs the hot air circulation mechanism to deliver high-speed hot air into the conical heating furnace 100, so that the internal temperature can quickly reach and be maintained in the solid solution temperature range of 540-560℃, and the profile is subjected to the first stage of rapid heating and solid solution. When the profile exits the conical heating furnace 100, the temperature detector at the discharge port detects the temperature again and feeds the signal back to the control module for fine adjustment. Subsequently, the profile is initially guided by the guide mechanism 400 and enters the cylindrical heating furnace 500. The temperature detector at the feed end of the cylindrical heating furnace 500 monitors the temperature of the profile when it enters. The control module independently controls the hot air circulation of the furnace to precisely control its internal temperature within the range of 450-500℃, and performs a second stage of cooling and temperature equalization on the profile. This step aims to make the profile temperature more uniform and avoid direct quenching at excessively high temperatures. Finally, the profile is stably clamped by the clamping mechanism 700 and sent into the quenching box 800 for quenching. The whole process realizes continuous and synchronous operation from extrusion to heat treatment. Through two-stage independent temperature control, the solution treatment effect is ensured and the risk of quenching deformation is reduced.

[0037] Example 2 Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 Based on Embodiment 1, this embodiment further defines the specific structural design of the two-stage heating heat treatment furnace to optimize heating efficiency and adaptability. In this embodiment, the conical heating furnace 100 includes a first furnace upper cover 110 and a first furnace lower body 120 connected by hinges. The interior of the first furnace upper cover 110 and the first furnace lower body 120 are both fixed with an inner furnace plate 130. Ventilation holes are evenly distributed on the inner furnace plate 130. The internal area formed by the first furnace upper cover 110 and the inner furnace plate 130 and the internal area formed by the first furnace lower body 120 and the inner furnace plate 130 are both the first furnace cavity 101. The first furnace cavity 101 is connected to the first hot air circulation mechanism. The feed ends of the No. 1 furnace top cover 110 and the No. 1 furnace lower body 120 are both provided with semi-circular holes, which together form the feed inlet; The cylindrical heating furnace 500 includes a second furnace cover 510 and a second furnace lower body 520 connected by hinges. A second furnace cavity 501 is installed inside both the second furnace cover 510 and the second furnace lower body 520. The second furnace cavity 501 is connected to a second hot air circulation mechanism. The second furnace cavity 501 communicates with the internal area of ​​the cylindrical heating furnace 500 through evenly distributed vent holes on its inner side. The second furnace cavity 501 is connected to the second hot air circulation mechanism.

[0038] Specifically, the lower body 120 of the first furnace of the conical heating furnace 100 is semi-conical in shape with a cone angle of 0-15°. The furnace body is placed horizontally and has a length of 1.0-3.0m. This conical design allows for better connection with the extruder outlet and reduces heat loss. The cylindrical heating furnace 500 has a rectangular shape with a semi-circular internal cavity. The furnace body is placed horizontally and has a length of 0.5m-2.0m. Furthermore, the first and second hot air circulation mechanisms are two independent hot air circulation mechanisms, each including a circulating fan, a heating element, an air supply duct, and a return air channel.

[0039] The operation process of this embodiment is as follows: The conical lower furnace body of the conical heating furnace 100 can closely fit the extruder outlet, forming a nearly closed transition channel, which greatly reduces the heat loss of the high-temperature profile before entering the first heat treatment zone. Its upper and lower furnace bodies are respectively connected to the first hot air circulation mechanism through corresponding air supply pipes and return air channels, which can realize high-speed hot air jet heating from both the upper and lower directions of the profile. The heating is uniform and efficient. The semi-circular inner cavity of the cylindrical heating furnace 500 can form a good enclosure for the profile. It is connected to the second hot air circulation mechanism through corresponding air supply pipes and return air channels. The hot air supplied can uniformly heat or cool the profile in the circumference, ensuring the consistency of the temperature field of the profile in the second stage of treatment. The hinged furnace cover facilitates the maintenance and cleaning of the equipment.

[0040] Example 3 Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 Based on Embodiment 2, this embodiment adds a conveying mechanism and its precision adjustment function inside the conical heating furnace 100 to improve the adaptability and conveying stability of profiles of different specifications. In this embodiment, a first conveying mechanism 200 is fixed inside the lower body 120 of the first furnace through a translation and tilting mechanism 300. The first conveying mechanism 200 includes a first roller frame 210 and a group of first conveying rollers 220 evenly distributed on it. Both ends of each first conveying roller 220 are movably connected to the first roller frame 210. The first conveying roller 220 is a high-temperature resistant felt roller, and the distance between two adjacent first conveying rollers 220 is 40cm.

[0041] The translation and tilting mechanism 300 includes a first adjustment component located at the bottom of the feed end of the first roller frame 210 and a second adjustment component located at the bottom of the discharge end, which are used to adjust the spatial posture of the first conveying mechanism 200. Specifically, the No. 1 adjustment component includes two symmetrically arranged No. 1 hydraulic connection structures 310. The No. 1 hydraulic connection structure 310 includes a No. 1 hydraulic column 311 and a U-shaped connecting plate 312. The No. 1 hydraulic column 311 is fixed on the furnace inner plate 130 in the lower body 120 of the No. 1 furnace. The output end of the No. 1 hydraulic column 311 is fixed with a connecting plate, and the connecting plate is movably connected to the U-shaped connecting plate 312. The second adjustment component includes two symmetrically arranged second hydraulic connection structures 320. The second hydraulic connection structure 320 includes a second hydraulic column 321 and a U-shaped slide 322. The second hydraulic column 321 is fixed on the furnace inner plate 130 in the lower body 120 of the first furnace. A connecting plate is fixed to the output end of the second hydraulic column 321. The connecting plate is movably connected to the bottom of the U-shaped slide 322.

[0042] Furthermore, the U-shaped connecting plate 312 is fixed to the bottom of the first roller frame 210; The bottom of the discharge end of the No. 1 roller frame 210 is provided with a sliding groove 211, and the U-shaped slide block 322 is slidably connected in the sliding groove 211.

[0043] The operation process of this embodiment is as follows: While supporting and conveying the profile, the high-temperature resistant felt roller can effectively prevent scratches on its surface. When producing different specifications or when there is a slight deviation in the extrusion centerline of the profile due to equipment debugging, the translation and tilting mechanism 300 starts to work. By independently controlling the lifting and lowering of the two No. 1 hydraulic columns 311 at the feeding end, the level and height of the feeding end of the No. 1 roller frame 210 can be adjusted. At the same time, the lifting and lowering of the two No. 2 hydraulic columns 321 at the discharge end is controlled. Since the U-shaped slide 322 can slide in the slide groove 211, the discharge end of the No. 1 roller frame 210 can both lift and lower and produce a slight horizontal displacement. By coordinating the control of the four hydraulic columns, the overall lifting, tilting and horizontal translation of the No. 1 conveying mechanism 200 can be realized, thereby accurately aligning with the extrusion centerline of the profile, ensuring that the profile is always centered and moves smoothly in the furnace, and avoiding scratching with the furnace wall.

[0044] Example 4 Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 Based on Embodiment 1 or 2, this embodiment describes in detail the specific structure of the guiding and clamping mechanism 700, emphasizing its key role in the stable operation and centering of the profile. In this embodiment, both the guiding mechanism 400 and the clamping mechanism 700 are provided with lifting seats and a pair of roller assemblies arranged in upper and lower mirror images. The lifting platform includes a base plate, hydraulic support columns, and a top plate. The top plate is fixed to the top of the base plate by a set of symmetrically arranged hydraulic support columns. The lifting seat of the guide mechanism 400 is the first lifting seat 410, and the pair of roller assemblies of the guide mechanism 400 are guide roller assemblies. The guide assembly includes a lower guide roller 420 and an upper guide roller 430. The two ends of the lower guide roller 420 are movably connected to the top surface of the bottom plate of the first lifting seat 410, and the two ends of the upper guide roller 430 are movably connected to the bottom surface of the top plate of the first lifting seat 410. The lifting seat of the clamping mechanism 700 is the second lifting seat 710. The pair of roller assemblies of the clamping mechanism 700 are clamping roller assemblies. The clamping roller assembly includes a lower clamping structure 720 and an upper clamping structure 730. The lower clamping structure 720 includes a lower clamping roller 721 and a lower drive motor 722. The output shaft of the lower drive motor 722 is connected to one end of the lower clamping roller 721. The two ends of the lower clamping roller 721 are movably connected to the top surface of the bottom plate of the second lifting seat 710. The lower drive motor 722 is fixed to the top surface of the bottom plate of the second lifting seat 710. The upper clamping structure 730 includes an upper clamping roller 731 and an upper drive motor 732. The output shaft of the upper drive motor 732 is connected to one end of the upper clamping roller 731. Both ends of the upper clamping roller 731 are movably connected to the bottom surface of the top plate of the second lifting seat 710. The upper drive motor 732 is fixed to the bottom surface of the top plate of the second lifting seat 710.

[0045] Specifically, the first lifting seat 410 of the guide mechanism 400 adjusts its height through its own hydraulic support column to ensure the alignment of the profile; The second lifting seat 710 of the clamping mechanism 700 adjusts its height through its own hydraulic support column, and the lower clamping roller 721 and the upper clamping roller 731 are driven by the lower drive motor 722 and the upper drive motor 732 respectively to clamp and ensure that the profile runs in the center.

[0046] The operation process of this embodiment is as follows: The first lifting seat 410 of the guide mechanism 400 adjusts the distance between the upper and lower guide rollers through its hydraulic support column to constrain and guide the profile in the vertical direction, ensuring that the profile can transition straight from the conical heating furnace 100 to the cylindrical heating furnace 500; the clamping mechanism 700 is one of the main power sources for the profile movement (the other power comes from the extruder itself), and its second lifting seat 710 is adjusted through the hydraulic support column so that the upper and lower clamping rollers can firmly clamp the profile. The lower drive motor 722 and the upper drive motor 732 drive the lower clamping roller 721 and the upper clamping roller 731 to rotate synchronously, respectively, to provide active and controllable traction force for the profile. This not only ensures that the profile has a constant speed throughout the heat treatment process, but its strong clamping force can also effectively resist the reverse impact that may be generated during quenching, ensuring that the profile is centered at the entrance of the quenching box 800 and preventing uneven quenching and deformation caused by deviation.

[0047] Example 5 Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , this embodiment provides an optimal solution for integrating the cylindrical heating furnace 500, its internal conveying mechanism, and the external guiding and clamping mechanism 700 into a stable whole. In this embodiment, a second conveying mechanism 600 is arranged inside the cylindrical heating furnace 500. The second conveying mechanism 600 includes hydraulic telescopic columns 610, a second roller frame 620, and second conveying rollers 630. The bottom of the second roller frame 620 is fixed inside the second furnace lower body 520 through a group of symmetrically arranged hydraulic telescopic columns 610, and second conveying rollers 630 are evenly distributed inside the second roller frame 620.

[0048] Specifically, the second roller frame 620 has a "U" - shaped structure. The first lifting seat 410 of the guiding mechanism 400 is fixed at one end of the second roller frame 620 close to the conical heating furnace 100, and the second lifting seat 710 of the clamping mechanism 700 is fixed at the other end of the second roller frame 620 close to the quenching tank 800.

[0049] The operation process of this embodiment is as follows: This design constitutes a highly integrated functional module. The "U" - shaped second roller frame 620 serves as a solid bearing frame, physically connecting the conveying function inside the cylindrical heating furnace 500 (through the second conveying rollers 630), the pre - furnace guiding function (through the fixed guiding mechanism 400), and the post - furnace traction function (through the fixed clamping mechanism 700) into one. This structure ensures strict coaxiality among the three links of guiding, in - furnace conveying, and clamping, greatly improving the stability of the profile during the second - stage heat treatment and discharging process. The hydraulic telescopic columns 610 can adjust the height of the second roller frame 620 and the guiding and clamping mechanisms 700 fixed thereon as a whole, enabling perfect docking with the previous conical heating furnace 100 and the subsequent quenching tank 800, and adapting to different production line configurations and profile specifications.

[0050] Embodiment 6 Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 This embodiment focuses on elaborating the strategies and methods for the control module in the device to achieve precise temperature control. In this embodiment, the control module is configured to receive the feedback signals from each temperature detector and achieve independent and precise closed - loop control of the temperatures in the conical heating furnace 100 and the cylindrical heating furnace 500 by adjusting the heating element power of the first hot - air circulation mechanism or the second heating mechanism, the air volume and pressure of the circulation fan. The air inlet of the circulating fan of the first hot air circulation mechanism is connected to the first furnace chamber (101) of the conical heating furnace (100) through the corresponding return air channel. It is used to continuously draw gas (mainly hot air with a slightly lower temperature) from the furnace chamber. The gas drawn back is mixed with a small amount of fresh air inside the mechanism and flows through the heating element to be quickly and evenly reheated to the set temperature. The high-speed airflow after being reheated is sprayed back into the furnace chambers of the conical heating furnace and the cylindrical heating furnace through the corresponding air supply pipes, and directly impacts the surface of the aluminum profile for heat exchange. The air inlet of the circulating fan of the second hot air circulation mechanism is connected to the second furnace chamber (501) of the cylindrical heating furnace (500) through the corresponding return air channel. It is used to continuously draw gas (mainly hot air with a slightly lower temperature) from the furnace chamber. The drawn-back gas mixes with a small amount of fresh air inside the mechanism and flows through the heating element to be quickly and evenly reheated to the set temperature. The high-speed airflow after being reheated is sprayed back into the furnace chambers of the conical heating furnace and the cylindrical heating furnace through the corresponding air supply pipes, and directly impacts the surface of the aluminum profile for heat exchange. Specifically, the workflow of the control module can be divided into three levels: signal input (sensing), central processing (decision-making), and execution output (driving). First, the signal input layer (sensing): This layer is responsible for collecting real-time data from the production line and is the foundation of control; Includes temperature detectors: key inputs, continuously monitoring the surface temperature of the profiles at the feed inlet and outlet of the conical heating furnace (100) and the feed end of the cylindrical heating furnace (500), and transmitting the real-time temperature signal to the control module; It also includes position / speed sensors: installed on each hydraulic mechanism and drive motor, used to provide feedback on the height of the lifting seat, the rotation speed of the pinch rollers, etc., to achieve more precise positioning and speed closed-loop control; Extruder and production line status feedback: Receive signals from the extruder main control system, such as real-time extrusion speed, equipment running / stopping status, and critical bar changing signals. These signals are important basis for predicting changes in operating conditions and adjusting control strategies in advance. Secondly, the central processing unit (decision-making): This is the "brain" of the control module, typically composed of a high-performance PLC or industrial computer. Includes signal processing and logic operations: filtering, transforming, and synthesizing all input signals; It also includes a temperature control subsystem: Its core task is to independently and accurately maintain the set temperature inside the conical and cylindrical heating furnaces (e.g., conical furnace: 540-560℃, cylindrical furnace: 450-500℃). Its working logic is as follows: The measured value of the temperature detector is compared with the preset process curve value as follows; If the measured value is too low, the required increase in heating power and air volume is calculated; if the measured value is too high, a command to reduce heating or start cooling is issued; for cylindrical furnaces, heating or hot air cooling can be performed according to process requirements. And the motion and transmission control subsystem: Its core task is to coordinate the actions of all mechanical mechanisms to ensure that the profile is aligned, stable, and runs at a constant speed. Its working logic is as follows: Based on the profile specifications, it automatically calculates and instructs the hydraulic columns of the translation and tilting mechanism (300) to adjust the spatial posture of the first conveying mechanism (200) to achieve precise centering; it controls the hydraulic support columns of the lifting seats of the guide mechanism (400) and the clamping mechanism (700) to adjust the roller spacing to adapt to different profile heights; it instructs the drive motors (722, 732) of the clamping mechanism to run synchronously at a speed matching the extrusion speed to provide stable traction; it controls the hydraulic telescopic column (610) of the cylindrical furnace to adjust the overall height of the second conveying mechanism (600).

[0051] Third, the execution output layer (driver), which is the final executor of the control module's decisions; It includes a first hot air circulation mechanism and a second hot air circulation mechanism: receiving instructions from the temperature control subsystem, precisely adjusting the power of their respective heating elements to directly change the heating intensity; precisely adjusting the air volume and pressure of their respective circulating fans to change the hot air velocity and flow rate, affecting the heat exchange efficiency; and precisely adjusting their respective dampers / valve to achieve switching between heating and cooling modes. It also includes various hydraulic / electric actuators: receiving instructions from the motion control subsystem to drive the hydraulic columns (311, 321) of the translation and tilting mechanism for precise positioning; driving the lifting seat hydraulic support column of the guide and clamping mechanism for height adjustment; driving the clamping roller drive motor (722, 732) to run at a set speed; and driving the cylindrical furnace hydraulic telescopic column (610) to rise and fall. The system has the ability to handle complex working conditions, which demonstrates its level of intelligence. Continuous extrusion stage: The system maintains dynamic equilibrium, and all subsystems work together to ensure stable production; During the bar changing shutdown phase: Upon receiving the "bar changing signal," the control module immediately initiates a special control program. The temperature control subsystem significantly reduces the hot air volume or shuts off heating, maintaining only the insulation power to save energy and prevent overheating of the equipment, while ensuring that the furnace temperature can recover quickly when the feed head enters. Speed ​​variation stage: When the extrusion speed changes, the control module can adjust the heating power and the speed of the pinch rollers in advance according to the speed feedforward signal to counteract the temperature and tension disturbances caused by the change in residence time. The entire system uses closed-loop control and real-time adjustments to ensure that the profiles undergo synchronous heat treatment during extrusion and to guarantee product quality.

[0052] The operation process of this embodiment is as follows: The control module is the "brain" of the entire system. It compares and calculates the preset process curve (e.g., 540-560℃ for conical furnace and 450-500℃ for cylindrical furnace) with real-time data from three key temperature measurement points (inlet and outlet of conical furnace and inlet of cylindrical furnace). Dynamic adjustment: When the inlet temperature of the conical furnace shows that the profile temperature is too low, the control module will increase the heating power and air volume of the first hot air circulation mechanism of the furnace for rapid heat replenishment; when the outlet temperature is close to the upper limit, the power will be appropriately reduced to prevent overheating. Independent control: The temperature control of the conical furnace and the cylindrical furnace is completely independent. For example, even if the conical furnace is running at full power, the control module can instruct the second hot air circulation mechanism of the cylindrical furnace to operate at a lower power, or even introduce some ambient temperature air to achieve "hot air cooling" of the profile, so as to achieve precise cooling and heat preservation effects; In response to changes in operating conditions: When extrusion bar changing or the profile temporarily stops moving, the control module can automatically reduce the hot air volume or adjust the heating power according to the temperature change inside the furnace to maintain the set temperature inside the furnace, prevent energy waste and equipment overheating, and ensure that the next profile head is immediately in the correct process temperature environment when it enters. This intelligent closed-loop control is the key to ensuring consistent product performance and high quality.

[0053] To verify the technical effectiveness of the present invention, the inventors compared the traditional extrusion process with the technical solution of the present invention for high-strength aluminum alloys 6056, 6110A, and 6013, as detailed below: Table 1 Table 2 Table 3 In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, 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.

Claims

1. An aluminum processing apparatus that performs extrusion and heat treatment simultaneously, comprising an extruder, a two-stage heating and heat treatment furnace, a guiding mechanism (400), a clamping mechanism (700), and a quenching box (800); characterized in that: The two-stage heating and heat treatment furnace includes a conical heating furnace (100) and a cylindrical heating furnace (500). The conical heating furnace (100) is fixed on the frame of the extruder and located between the extrusion die outlet and the front beam outlet of the extruder. The cylindrical heating furnace (500) is located between the extruder outlet and the quenching box (800). The guiding mechanism (400) is disposed between the conical heating furnace (100) and the cylindrical heating furnace (500), and the clamping mechanism (700) is disposed between the cylindrical heating furnace (500) and the quenching box (800); It also includes a control module, a temperature detector, a first hot air circulation mechanism and a second hot air circulation mechanism. The temperature detector is set at the feed inlet and outlet of the conical heating furnace (100) and the feed end of the cylindrical heating furnace (500). The control module is connected to the temperature detector, the first hot air circulation mechanism, the second hot air circulation mechanism, the conical heating furnace (100) and the cylindrical heating furnace (500), and is used to control the hot air circulation mechanism according to the feedback signal of the temperature detector to independently adjust the temperature inside the conical heating furnace (100) and the cylindrical heating furnace (500).

2. The aluminum processing apparatus according to claim 1, wherein extrusion and heat treatment are performed simultaneously, is characterized in that, The conical heating furnace (100) includes a first furnace top cover (110) and a first furnace bottom body (120) connected by hinges. The interior of the first furnace top cover (110) and the first furnace bottom body (120) are both fixed with an inner furnace plate (130). The inner furnace plate (130) is evenly distributed with ventilation holes. The internal area formed by the first furnace top cover (110) and the inner furnace plate (130) and the internal area formed by the first furnace bottom body (120) and the inner furnace plate (130) are both the first furnace cavity (101). The first furnace cavity (101) is connected to the first hot air circulation mechanism. The feed ends of the No. 1 furnace top cover (110) and the No. 1 furnace bottom body (120) are both provided with semi-circular holes, which together form the feed inlet; The cylindrical heating furnace (500) includes a second furnace cover (510) and a second furnace lower body (520) connected by hinges. A second furnace chamber (501) is installed inside both the second furnace cover (510) and the second furnace lower body (520). The second furnace chamber (501) is connected to a second hot air circulation mechanism. The second furnace chamber (501) is connected to the internal area of ​​the cylindrical heating furnace (500) through evenly distributed vent holes on its inner side. A temperature detector is fixed at the feed end of the second furnace chamber (501). The lower furnace body (120) of the conical heating furnace (100) is in the shape of a semi-cone with a cone angle of 0-15°. The furnace body is placed horizontally and has a length of 1.0-3.0m. The cylindrical heating furnace (500) has a rectangular shape and a semi-circular internal cavity. The furnace body is placed horizontally and has a length of 0.5m-2.0m.

3. The aluminum processing apparatus that simultaneously performs extrusion and heat treatment according to claim 2, characterized in that, The interior of the lower body (120) of the No. 1 furnace is fixed with a No. 1 conveying mechanism (200) by a translation and tilting mechanism (300). The No. 1 conveying mechanism (200) includes a No. 1 roller frame (210) and a group of No. 1 conveying rollers (220) evenly distributed on it. Both ends of each No. 1 conveying roller (220) are movably connected to the No. 1 roller frame (210). The No. 1 conveying roller (220) is a high temperature resistant felt roller. The distance between two adjacent No. 1 conveying rollers (220) is 40cm.

4. The aluminum processing apparatus that simultaneously performs extrusion and heat treatment according to claim 3, characterized in that, The translation and tilting mechanism (300) includes a first adjustment component located on the bottom side of the feed end of the first roller frame (210) and a second adjustment component located on the bottom side of the discharge end, which are used to adjust the spatial posture of the first conveying mechanism (200). The No. 1 adjustment component includes two symmetrically arranged No. 1 hydraulic connection structures (310). The No. 1 hydraulic connection structure (310) includes a No. 1 hydraulic column (311) and a U-shaped connecting plate (312). The No. 1 hydraulic column (311) is fixed on the furnace inner plate (130) in the lower body (120) of the No. 1 furnace. The output end of the No. 1 hydraulic column (311) is fixed with a connecting plate. The connecting plate is movably connected to the U-shaped connecting plate (312). The U-shaped connecting plate (312) is fixed to the bottom of the No. 1 roller frame (210). The second adjustment component includes two symmetrically arranged second hydraulic connection structures (320). The second hydraulic connection structure (320) includes a second hydraulic column (321) and a U-shaped slide (322). The second hydraulic column (321) is fixed on the furnace inner plate (130) in the lower body (120) of the first furnace. The output end of the second hydraulic column (321) is fixed with a connecting plate. The connecting plate is movably connected to the bottom of the U-shaped slide (322). The bottom of the discharge end of the first roller frame (210) is provided with a sliding groove (211). The U-shaped slide (322) is slidably connected in the corresponding sliding groove (211).

5. The aluminum processing apparatus according to claim 4, wherein extrusion and heat treatment are performed simultaneously, is characterized in that, Both the guiding mechanism (400) and the clamping mechanism (700) are equipped with a lifting seat and a pair of roller assemblies arranged in an upper and lower mirror image; The lifting platform includes a base plate, hydraulic support columns, and a top plate. The top plate is fixed to the top of the base plate by a set of symmetrically arranged hydraulic support columns. The lifting seat of the guide mechanism (400) is the first lifting seat (410), and the pair of roller assemblies of the guide mechanism (400) are guide roller assemblies. The guide assembly includes a lower guide roller (420) and an upper guide roller (430). The two ends of the lower guide roller (420) are movably connected to the top surface of the bottom plate of the first lifting seat (410), and the two ends of the upper guide roller (430) are movably connected to the bottom surface of the top plate of the first lifting seat (410). The lifting seat of the pinch mechanism (700) is the second lifting seat (710). The pair of roller assemblies of the pinch mechanism (700) are pinch roller assemblies, and the pinch roller assembly includes a lower pinch structure (720) and an upper pinch structure (730). The lower pinch structure (720) includes a lower pinch roller (721) and a lower drive motor (722). The output shaft of the lower drive motor (722) is connected to one end of the lower pinch roller (721). Both ends of the lower pinch roller (721) are movably connected to the top surface of the bottom plate of the second lifting seat (710). The lower drive motor (722) is fixed to the top surface of the bottom plate of the second lifting seat (710). The upper pinch structure (730) includes an upper pinch roller (731) and an upper drive motor (732). The output shaft of the upper drive motor (732) is connected to one end of the upper pinch roller (731). Both ends of the upper pinch roller (731) are movably connected to the bottom surface of the top plate of the second lifting seat (710). The upper drive motor (732) is fixed to the bottom surface of the top plate of the second lifting seat (710); Among them, the first lifting seat (410) of the guiding mechanism (400) adjusts its height through its own hydraulic support column to ensure the centering of the profile; The second lifting seat (710) of the pinch mechanism (700) adjusts its height through its own hydraulic support column, and the lower pinch roller (721) and the upper pinch roller (731) are respectively driven by the lower drive motor (722) and the upper drive motor (732) to pinch and ensure the centered operation of the profile.

6. The aluminum processing apparatus according to claim 5, wherein extrusion and heat treatment are performed simultaneously, is characterized in that, A second conveying mechanism (600) is arranged inside the cylindrical heating furnace (500). The second conveying mechanism (600) includes a hydraulic telescopic column (610), a second roller rack (620) and a second conveying roller (630). The bottom of the second roller rack (620) is fixed inside the second furnace lower body (520) through the hydraulic telescopic column (610). The second conveying rollers (630) are evenly distributed inside the second roller rack (620).

7. The aluminum processing apparatus according to claim 6, wherein extrusion and heat treatment are performed simultaneously, is characterized in that, The second roller rack (620) is of a "U" - shaped structure; The first lifting seat (410) of the guiding mechanism (400) is fixed to one end of the second roller rack (620) close to the conical heating furnace (100); The second lifting seat (710) of the pinch mechanism (700) is fixed to one end of the second roller rack (620) close to the quenching tank (800).

8. The aluminum processing apparatus according to claim 7, wherein extrusion and heat treatment are performed simultaneously, is characterized in that, The first hot - air circulation mechanism and the second hot - air circulation mechanism are two independent hot - air circulation mechanisms; The hot - air circulation mechanism includes a circulation fan, a heating element, a air supply duct, and a return air channel; It should be noted that in the original text, the description of the "second roller rack (620) is of a '几' - shaped structure" is likely a Chinese character input error. I translated it as a "U" - shaped structure based on common sense. If this is not what you intended, please correct the original text for a more accurate translation. The air inlet of the circulating fan of the first hot air circulation mechanism is connected to the first furnace chamber (101) of the conical heating furnace (100) through the corresponding return air channel. It is used to continuously draw gas (mainly hot air with a slightly lower temperature) from the furnace chamber. The gas drawn back is mixed with a small amount of fresh air inside the mechanism and flows through the heating element to be quickly and evenly reheated to the set temperature. The high-speed airflow after being reheated is sprayed back into the furnace chambers of the conical heating furnace and the cylindrical heating furnace through the corresponding air supply pipes, and directly impacts the surface of the aluminum profile for heat exchange. The air inlet of the circulating fan of the second hot air circulation mechanism is connected to the second furnace chamber (501) of the cylindrical heating furnace (500) through the corresponding return air channel. It is used to continuously draw gas (mainly hot air with a slightly lower temperature) from the furnace chamber. The drawn-back gas mixes with a small amount of fresh air inside the mechanism and flows through the heating element to be quickly and evenly reheated to the set temperature. The high-speed airflow after being reheated is sprayed back into the furnace chambers of the conical heating furnace and the cylindrical heating furnace through the corresponding air supply pipes, and directly impacts the surface of the aluminum profile for heat exchange.

9. The aluminum processing apparatus according to claim 8, wherein extrusion and heat treatment are performed simultaneously, is characterized in that, The control module is configured to receive temperature detection signals from the conical heating furnace (100) and the cylindrical heating furnace (500) respectively, and independently send control commands to the first hot air circulation mechanism and the second hot air circulation mechanism to achieve independent and precise closed-loop control of the temperature inside the conical heating furnace (100) and the cylindrical heating furnace (500).

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