Aluminum profile rolling online quenching equipment based on multistage reverse cooling and control method thereof
By using a multi-stage reverse cooling method and employing four types of nozzles to spray cooling media at an angle, the problems of vapor film obstruction and energy waste in the hot rolling production line of aluminum profiles have been solved, achieving efficient temperature control and energy reduction.
Patent Information
- Application Number
- CN202512009609.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-29
- Publication Date
- 2026-03-27
AI Technical Summary
In existing aluminum profile hot rolling production lines, there are problems such as vapor film hindering the flow of cooling medium and energy waste during the cooling process of high-temperature aluminum plates, especially in the temperature change zone where the cooling efficiency is low.
A multi-stage reverse cooling method is adopted, in which different cooling media are sprayed at different angles through four nozzles, including high-flow spray to break the vapor film and low-flow spray to maintain stable heat exchange. Combined with the fact that the spray direction is at a certain angle to the movement direction of the aluminum plate, multi-stage reverse cooling is achieved.
It effectively breaks through the vapor film barrier, reduces energy consumption, ensures rapid cooling of aluminum plates and avoids deformation, and achieves efficient temperature control.
Smart Images
Figure CN121732552A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of aluminum profile rolling, and particularly relates to an aluminum profile rolling online quenching device based on multi-stage reverse cooling and a control method thereof. BACKGROUND
[0002] Aluminum profile hot rolling is one of the core processes of plastic processing of aluminum alloy, and through hot rolling deformation and subsequent temperature control and cooling, the strength, plasticity and toughness of the aluminum alloy product can be significantly improved. For example, for aircraft skin plates with a large width-thickness ratio, hot rolling is the only economically feasible production method.
[0003] The existing aluminum profile hot rolling production line mainly uses a roller to receive an aluminum plate and completes the cooling and quenching of the aluminum plate at the roller. For example, cooling liquid stored in a sealed container is sprayed onto the high-temperature aluminum plate, or cooling water is sprayed above the roller, or a cooling gas flow is sprayed onto the high-temperature aluminum plate at intervals between the rollers to achieve cooling.
[0004] In the later stage of the aluminum profile hot rolling production line, the high-temperature aluminum plate is cooled by directly spraying a cooling medium. Since the travel distance is large, the temperature of the aluminum plate changes from high to low in the front and rear sections. On the one hand, the steam emitted by the front section of the aluminum plate hinders the cooling medium, and on the other hand, the temperature of the rear section of the aluminum plate is relatively low, and the full-range direct spraying of the cooling medium is still used. Part of the sprayed cooling medium hardly exchanges heat with the aluminum plate, which may cause waste. Therefore, the present application proposes an aluminum profile rolling online quenching device based on multi-stage reverse cooling and a control method thereof. SUMMARY
[0005] The purpose of the present application is to provide an aluminum profile rolling online quenching device based on multi-stage reverse cooling and a control method thereof, which can realize multi-stage reverse cooling, break the steam film on the aluminum plate through large-flow spraying, overcome the hindering effect of the steam film, and effectively reduce energy consumption through small-flow spraying.
[0006] The technical solutions adopted by the present application are as follows: The aluminum profile rolling online quenching device based on multi-stage reverse cooling comprises two extrusion cabins and a hydraulic cylinder, and the two extrusion cabins are externally provided with a conveying roller. The device further comprises: A first spray head, a third spray head and a fourth spray head are arranged in a straight line outside the conveying roller, and a second spray head is arranged inside the conveying roller at a position between the first spray head and the third spray head. In operation, the first spray head, the third spray head and the fourth spray head respectively spray different cooling media obliquely to the conveying direction of the conveying roller, and the second spray head is used to spray the tail water of the first spray head to the conveying roller after recovering the tail water, thereby realizing multi-stage reverse cooling on the conveying roller.
[0007] As an alternative, it also includes: A first water pump, a second water pump, a third water pump, and a cooling fan are installed outside the conveyor roller conveyor. During operation, the first water pump supplies water to the first nozzle, the second water pump supplies tailwater to the second nozzle, the third water pump supplies atomized water to the third nozzle, and the cooling fan supplies cooling airflow to the fourth nozzle.
[0008] As an optional solution, a first delivery pipe is connected between the output end of the first water pump and the inlet of the first nozzle; The first conveying pipe is connected to a first rotating shaft that is parallel to the conveying roller. Both ends of the first rotating shaft are rotatably connected to a first suspension flange. A first rotary motor that is coaxially connected to the first rotating shaft is installed on the outside of the first suspension flange. When the first rotary motor starts, the first rotating shaft drives the first nozzle to rotate, thereby changing the inclination angle of the first nozzle relative to the conveyor roller.
[0009] As an alternative, a second conveying pipe is connected between the water inlet of the second nozzle and the output end of the second water pump, and a second suspension flange parallel to the conveying roller is installed at the bottom of the second conveying pipe.
[0010] As an optional solution, a water collection tank is provided at the bottom of the conveyor roller, and a filter screen for filtering tailwater is provided inside the water collection tank. A return pipe is connected between the water outlet of the water collection tank and the water inlet of the second water pump. When the second water pump starts, the tailwater filtered by the water collection tank is delivered to the second nozzle.
[0011] As an optional solution, a third delivery pipe is connected between the output end of the third water pump and the inlet of the third nozzle, and a third suspension flange is installed at the bottom of the third delivery pipe.
[0012] As an optional solution, a fourth delivery pipe is connected between the output end of the cooling fan and the air inlet of the fourth nozzle; The fourth conveying pipe is equipped with a second rotating shaft that is parallel to the conveying roller. Both ends of the second rotating shaft are rotatably connected to a fourth suspension flange. A second rotating motor that is coaxially connected to the second rotating shaft is installed on the outside of the fourth suspension flange.
[0013] As an optional solution, both extrusion chambers are rotatably equipped with support rollers and extrusion rollers; The support roller and the adjacent extrusion roller are in contact, and the gap between the two extrusion rollers forms an extrusion channel. There is a gap between the extrusion channel and the spraying range of the first nozzle.
[0014] As an alternative, a support frame is provided at the end of the conveyor roller conveyor away from the two extrusion chambers; Two limiting grooves are provided on the outer side of the support frame, and a winding roller for winding the aluminum profile after cooling is provided between the two limiting grooves.
[0015] A method for controlling online quenching of aluminum profiles during extrusion, the method comprising the following steps: Material feeding stage: The gap between the two extrusion chambers forms an extrusion channel. The extrusion channel is adjusted to the preset size, and the high-temperature aluminum profile is placed horizontally and uniformly into the extrusion channel until it is extruded into an aluminum plate of a specified shape, which is then received by the conveyor rollers outside the extrusion channel. First cooling and quenching: external clean water is drawn in, pressurized and then transported to the first nozzle, so that the first nozzle sprays clean water onto the aluminum plate, and the spraying direction is at an angle of 150° to 180° with the movement direction of the aluminum plate, so as to achieve reverse spraying, thereby reducing the vapor film on the surface of the aluminum plate. Second cooling and quenching: The tail water from the first cooling and quenching is filtered and then sent to the second nozzle, which sprays the tail water onto the back of the aluminum plate in a fan shape. The third cooling and quenching process involves drawing in external clean water, pressurizing it, and using it as a source of atomized water to deliver it to the third nozzle. The third nozzle then sprays atomized water toward the aluminum plate, maintaining a reverse impact to ensure stable heat exchange efficiency. The fourth cooling and quenching process involves drawing in outside air and delivering compressed air to the fourth nozzle, which then blows cooling airflow into the aluminum plate array.
[0016] The technical effects achieved by this invention are as follows: This invention achieves multi-stage reverse cooling by spraying different cooling media at different angles using four types of nozzles. In areas with higher temperatures, a large flow of cooling media is sprayed to break up the vapor film on the aluminum plate and overcome the obstruction caused by the vapor film. In areas with lower temperatures, a small flow of cooling media is sprayed. This multi-segment cooling media control can effectively reduce energy consumption.
[0017] This invention makes the spraying direction form an angle of 150° to 180° with the direction of aluminum plate movement, achieving almost completely reverse spraying. High-pressure water is used to instantly break the vapor film by reverse impact, allowing the aluminum plate to rapidly drop from the final rolling temperature to below 250°C, thus suppressing the key phase transformation on the surface.
[0018] This invention sprays a small flow of cooling medium in a low-temperature area, or at a certain angle relative to the direction of travel of the aluminum plate, relative to the first cooling and quenching, maintaining a reverse impact, maintaining high and stable heat exchange efficiency, so that the heat of the aluminum plate is continuously and rapidly conducted to the surface and dissipated. Since the impact of the atomized water is relatively light, it can avoid causing deformation such as bending of the aluminum plate. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the online quenching equipment for aluminum profile rolling in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the aluminum profile extrusion process in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the compression chamber in Embodiment 1 of the present invention; Figure 4 This is a side view of the first nozzle in Embodiment 1 of the present invention; Figure 5 This is a side view of the second nozzle in Embodiment 1 of the present invention; Figure 6 This is a front view of the third nozzle in Embodiment 1 of the present invention; Figure 7 This is a side view of the fourth nozzle in Embodiment 1 of the present invention; Figure 8 This is a system block diagram of the control computer controlling the signal transmission status of the processing station in Embodiment 1 of the present invention; Figure 9 This is a flowchart of the control method in Embodiment 2 of the present invention.
[0020] The attached diagram lists the components represented by each number as follows: 1. Extrusion chamber; 2. Hydraulic cylinder; 3. Support roller; 4. Extrusion roller; 5. Conveyor roller conveyor; 6. First nozzle; 7. First conveying pipe; 8. First water pump; 9. First rotating shaft; 10. First suspension flange; 11. First rotary motor; 12. Second nozzle; 13. Second suspension flange; 14. Second conveying pipe; 15. Second water pump; 16. Return pipe; 17. Water collection tank; 18. Third nozzle; 19. Third conveying pipe; 20. Third water pump; 21. Third suspension flange; 22. Fourth nozzle; 23. Fourth conveying pipe; 24. Cooling fan; 25. Second rotating shaft; 26. Fourth suspension flange; 27. Second rotary motor; 28. Support frame; 29. Limiting groove; 30. Take-up roller. Detailed Implementation
[0021] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention.
[0022] Example 1: like Figures 1-8 As shown, the online quenching equipment for aluminum profile rolling based on multi-stage reverse cooling includes two extrusion chambers 1 and a hydraulic cylinder 2. Support rollers 3 and extrusion rollers 4 are rotatably mounted inside each of the two extrusion chambers 1 via bearings. The support rollers 3 are driven by a three-phase motor and a belt conveyor. Since the support rollers 3 and adjacent extrusion rollers 4 are in contact, they rotate synchronously under friction, allowing the gap between the two extrusion rollers 4 to form an extrusion channel. Furthermore, the hydraulic cylinder 2 and the three-phase motor are electrically connected to the processing station control computer. Under the control of the processing station control computer, the hydraulic cylinder 2 drives the two extrusion chambers 1 to move relative to each other, thereby adjusting the extrusion channel to a preset size, extruding the high-temperature aluminum profile into an aluminum plate of a specified shape. The plate is then received by a conveyor roller 5 outside the two extrusion chambers 1, where heat dissipation and quenching are completed.
[0023] See attached document Figure 1 , Figure 4 and Figure 8 In order to quickly complete the heat dissipation and quenching of aluminum plates, in this embodiment, a row of first nozzles 6 is set above the conveyor roller 5 near the extrusion channel. External clean water is drawn in by the first water pump 8 and pressurized, so that the clean water flows along the first conveying pipe 7 connected between the output end of the first water pump 8 and the inlet of the first nozzle 6, so that the first nozzle 6 sprays clean water onto the high-temperature aluminum plate for the first cooling and quenching. Meanwhile, in this embodiment, two first suspension flanges 10 are suspended from the ceiling above the conveyor roller 5 by steel rods. A first rotating shaft 9 parallel to the conveyor roller 5 is rotatably installed between the two first suspension flanges 10 by bearings. The top of the first conveying pipe 7 is fixed to the outside of the first rotating shaft 9 by clamps. A first rotary motor 11 coaxially connected to the first rotating shaft 9 is installed on the outside of the first suspension flange 10 by screws. The first rotary motor 11 is electrically connected to the processing station control computer. When the first rotary motor 11 starts, the first rotating shaft 9 drives the first nozzle 6 to rotate, thereby changing the inclination angle of the first nozzle 6 relative to the conveyor roller 5. A safe distance is left between the spraying range of the first nozzle 6 and the extrusion channel to prevent water from spraying onto the support roller 3 and the extrusion roller 4. The spraying direction is at an angle of 150° to 180° with the direction of aluminum plate movement, achieving almost completely reverse spraying. The high-pressure water reverse impact instantly breaks the vapor film, causing the aluminum plate to drop rapidly from the final rolling temperature to below 250°C, thus completing the suppression of the key phase transformation on the surface.
[0024] See attached document Figure 1 and Figure 5 Because the final rolling temperature of the aluminum plate is high, the amount of water sprayed by the first nozzle 6 during cooling is large, causing the wastewater to carry debris and other impurities down the edge of the aluminum plate. In this embodiment, a water collection tank 17 is placed at the bottom of the conveyor roller 5 to collect the wastewater, and a filter screen is set inside the water collection tank 17 to filter the tailwater.
[0025] See attached document Figure 1 , Figure 5 and Figure 8 In order to recycle the wastewater, in this embodiment, the outlet of the water collection tank 17 is connected in sequence to the return pipe 16, the second water pump 15, the second delivery pipe 14 and the second nozzle 12 through a connector. When the second water pump 15 starts, the tail water filtered by the water collection tank 17 is delivered to the second nozzle 12. Since the second nozzle 12 sprays tail water in a fan shape, it can cover the back of the aluminum plate along the gap of the conveyor roller 5. In addition, the five second nozzles 12 spray water simultaneously, which can cover the entire aluminum plate laterally, thus realizing the second cooling and quenching. Meanwhile, in this embodiment, a second suspension flange 13 parallel to the conveyor roller 5 is installed at the bottom of the second conveying pipe 14 by means of a clamp. The second suspension flange 13 is fixed to the conveyor roller 5 by bolts to stably support the five second nozzles 12.
[0026] See attached document Figure 1 , Figure 6 and Figure 8 After the aluminum plate has completed the first two cooling and quenching processes, its temperature is relatively low, and the water consumption required for subsequent cooling and quenching is relatively small. Therefore, in this embodiment, four sets of third nozzles 18 are added downstream of the second cooling and quenching process. Each set of third nozzles 18 is configured with five nozzles. External clean water is drawn and pressurized by the third water pump 20 as a source of atomized water. In addition, the output end of the third water pump 20 is connected to the third delivery pipe 19 and the third nozzles 18 in sequence through a connector. The third nozzles 18 are configured as atomizing nozzles that can spray atomized water toward the aluminum plate for the third cooling and quenching process. At this time, the third nozzle 18 can remain vertical or at a certain angle relative to the direction of travel of the aluminum plate. It maintains a reverse impact relative to the first cooling and quenching process, maintaining high and stable heat exchange efficiency, so that the heat of the aluminum plate can be continuously and quickly conducted to the surface and dissipated. Since the impact of the atomized water is relatively light, it can avoid causing deformation such as bending of the aluminum plate. Furthermore, in this embodiment, a third suspension flange 21 is installed at the bottom of the third delivery pipe 19 by means of a clamp, and the third suspension flange 21 is suspended from the ceiling by means of a steel rod, so as to realize the suspended spraying of the third nozzle 18.
[0027] See attached document Figure 1 , Figure 7 and Figure 8In this embodiment, sixteen fourth nozzles 22 and a cooling fan 24 are also set above the conveyor roller 5 and downstream of the third nozzle 18. The output end of the cooling fan 24 and the air inlet of the fourth nozzle 22 are connected by a fourth conveying pipe 23. The cooling fan 24 is electrically connected to the processing station control computer. When the cooling fan 24 is started, it draws in outside air and pumps the compressed air along the fourth conveying pipe 23 to the fourth nozzle 22, so that the fourth nozzle 22 blows the cooling airflow into the aluminum plate array to achieve the fourth cooling quenching. The top of the fourth conveying pipe 23 is fitted with a second rotating shaft 25 parallel to the conveying roller 5 via a clamp. Both ends of the second rotating shaft 25 are rotatably connected to a fourth suspension flange 26 via bearings. In this embodiment, both fourth suspension flanges 26 are suspended from the ceiling by steel rods. Since a second rotary motor 27 coaxially connected to the second rotating shaft 25 is installed on the outside of the fourth suspension flange 26 via bolts, the second rotary motor 27 is electrically connected to the processing station control computer. The second rotary motor 27 is started to rotate the second rotating shaft 25, thereby driving the fourth nozzle 22 to change its orientation, realizing the fourth nozzle 22 blowing air in the opposite or forward direction relative to the aluminum plate's travel direction.
[0028] As mentioned above, in areas where the aluminum plate temperature is relatively low, a gentler cooling and quenching process is used, and the spraying direction is switched to alleviate any potential localized temperature unevenness in the early stages, thereby uniformly cooling the aluminum plate to the target coiling temperature of 60°C.
[0029] In summary, the first nozzle 6, the second nozzle 12, the third nozzle 18, and the fourth nozzle 22, which are arranged in a straight line outside the conveyor roller 5, spray different cooling media at an angle towards the conveying direction of the conveyor roller 5 during operation, thereby achieving multi-stage reverse cooling. The temperature of the aluminum plate at each cooling and quenching position is monitored in real time by an infrared thermometer. If the temperature of the aluminum plate is higher than the preset process temperature, the flow rate of the corresponding cooling and quenching medium should be increased. Conversely, if the temperature of the aluminum plate is lower than the preset process temperature, the flow rate of the corresponding cooling and quenching medium should be reduced until the requirements of the preset process temperature are met.
[0030] Finally, in this embodiment, a take-up roller 30 is installed on a support frame 28 downstream of the conveyor roller 5. After the aluminum plate cools down, it is wound up by the take-up roller 30. For example, a brake motor and a matching gearbox are used to drive the take-up roller 30 to achieve automated rotation of the take-up roller 30. Meanwhile, two limiting grooves 29 are opened on the outside of the support frame 28, and the winding roller 30 is placed between the two limiting grooves 29 so that it is directly facing the aluminum plate.
[0031] Example 2: like Figure 9 As shown, the online quenching control method for aluminum profile extrusion is applied to the online quenching equipment for aluminum profile rolling provided in Example 1. The control method includes the following steps: Feeding stage: Start the three-phase motor to drive the support roller 3 and the extrusion roller 4 to rotate. The interval between the two extrusion rollers 4 can form an extrusion channel. Adjust the extrusion channel to the preset size and put the high-temperature aluminum profile into the extrusion channel at a uniform speed until it is extruded into an aluminum plate of a specified shape, which is then received by the conveyor roller 5 outside the extrusion channel. First cooling and quenching: External clean water is drawn and pressurized by the first water pump 8, and the clean water flows along the first delivery pipe 7 connecting the output end of the first water pump 8 and the inlet of the first nozzle 6, so that the first nozzle 6 sprays clean water onto the high-temperature aluminum plate for the first cooling and quenching. When the first rotary motor 11 starts, the first rotating shaft 9 drives the first nozzle 6 to rotate, thereby changing the inclination angle of the first nozzle 6 relative to the conveyor roller 5. A safe distance is left between the spraying range of the first nozzle 6 and the extrusion channel to prevent water from being sprayed onto the support roller 3 and the extrusion roller 4. The spraying direction is at an angle of 150° to 180° with the direction of aluminum plate movement, achieving almost completely reverse spraying. The high-pressure water reverse impact instantly breaks the vapor film, causing the aluminum plate to drop rapidly from the final rolling temperature to below 250°C, thus completing the suppression of key phase transformation on the surface. Meanwhile, wastewater is collected by the water collection tank 17 placed at the bottom of the conveyor roller 5, and a filter screen is installed inside the water collection tank 17 to filter the tailwater. Second cooling and quenching: When the second water pump 15 starts, the tail water filtered by the water collection tank 17 is delivered to the second nozzle 12. Since the second nozzle 12 sprays tail water in a fan shape, it can cover the back of the aluminum plate along the gap of the conveyor roller 5. In addition, the five second nozzles 12 spray water simultaneously, which can cover the entire aluminum plate laterally, thus realizing the second cooling and quenching. The third cooling and quenching process involves using a third water pump 20 to draw in external clean water for pressurization, which then serves as the atomized water source. Additionally, the output of the third water pump 20 is connected to the third delivery pipe 19 and the third nozzle 18 via a connector. The third nozzle 18 is configured as an atomizing nozzle, which can spray atomized water onto the aluminum plate for the third cooling and quenching process. At this time, the third nozzle 18 can remain vertical or at a certain angle relative to the direction of travel of the aluminum plate. It maintains a reverse impact relative to the first cooling and quenching process, maintaining high and stable heat exchange efficiency, so that the heat of the aluminum plate can be continuously and quickly conducted to the surface and dissipated. Since the impact of the atomized water is relatively light, it can avoid causing deformation such as bending of the aluminum plate. Fourth cooling and quenching: Start the cooling fan 24 to draw in outside air and pump the compressed air along the fourth delivery pipe 23 to the fourth nozzle 22, so that the fourth nozzle 22 blows the cooling airflow into the aluminum plate in an array to achieve the fourth cooling and quenching. After quenching, a brake motor and a matching reduction gearbox are used to drive the take-up roller 30 to achieve automated rotation of the take-up roller 30.
[0032] The above description is merely an optional embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.
Claims
1. An online quenching equipment for aluminum profile rolling based on multi-stage reverse cooling, comprising two extrusion chambers (1) and hydraulic cylinders (2), wherein conveyor rollers (5) are provided outside the two extrusion chambers (1), characterized in that, Also includes: A first nozzle (6), a third nozzle (18), and a fourth nozzle (22) are arranged in a straight line outside the conveyor roller (5), and a second nozzle (12) is arranged inside the conveyor roller (5) between the first nozzle (6) and the third nozzle (18). During operation, the first nozzle (6), the third nozzle (18) and the fourth nozzle (22) spray different cooling media at an angle toward the conveying direction of the conveying roller (5). The second nozzle (12) sprays the tail water of the first nozzle (6) onto the conveying roller (5) after recovering the tail water, thereby realizing multi-stage reverse cooling on the conveying roller (5).
2. The online quenching equipment for aluminum profile rolling according to claim 1, characterized in that, Also includes: A first water pump (8), a second water pump (15), a third water pump (20), and a cooling fan (24) are installed outside the conveyor roller (5). During operation, the first water pump (8) supplies water to the first nozzle (6), the second water pump (15) supplies tailwater to the second nozzle (12), the third water pump (20) supplies atomized water to the third nozzle (18), and the cooling fan (24) supplies cooling airflow to the fourth nozzle (22).
3. The online quenching equipment for aluminum profile rolling according to claim 2, characterized in that: A first delivery pipe (7) is connected between the output end of the first water pump (8) and the inlet of the first nozzle (6). The first conveying pipe (7) is connected to a first rotating shaft (9) that is parallel to the conveying roller (5) at the top. Both ends of the first rotating shaft (9) are rotatably connected to a first suspension flange (10). A first rotary motor (11) that is coaxially connected to the first rotating shaft (9) is installed on the outside of the first suspension flange (10). When the first rotary motor (11) is started, the first rotating shaft (9) drives the first nozzle (6) to rotate, thereby changing the inclination angle of the first nozzle (6) relative to the conveyor roller (5).
4. The online quenching equipment for aluminum profile rolling according to claim 2, characterized in that: A second conveying pipe (14) is connected between the inlet of the second nozzle (12) and the output end of the second water pump (15). A second suspension flange (13) parallel to the conveying roller (5) is installed at the bottom of the second conveying pipe (14).
5. The online quenching equipment for aluminum profile rolling according to claim 2, characterized in that: The bottom of the conveyor roller (5) is provided with a water collection tank (17), and a filter screen for filtering tailwater is provided inside the water collection tank (17). A return pipe (16) is connected between the water outlet of the water collection tank (17) and the water inlet of the second water pump (15). When the second water pump (15) is started, the tailwater filtered by the water collection tank (17) is delivered to the second nozzle (12).
6. The online quenching equipment for aluminum profile rolling according to claim 2, characterized in that: A third delivery pipe (19) is connected between the output end of the third water pump (20) and the inlet of the third nozzle (18), and a third suspension flange (21) is installed at the bottom of the third delivery pipe (19).
7. The online quenching equipment for aluminum profile rolling according to claim 2, characterized in that: A fourth delivery pipe (23) is connected between the output end of the cooling fan (24) and the air inlet of the fourth nozzle (22). The fourth conveying pipe (23) is equipped with a second rotating shaft (25) that is parallel to the conveying roller (5) at the top. Both ends of the second rotating shaft (25) are rotatably connected to a fourth suspension flange (26). A second rotary motor (27) that is coaxially connected to the second rotating shaft (25) is installed on the outside of the fourth suspension flange (26).
8. The online quenching equipment for aluminum profile rolling according to claim 1, characterized in that: The two extrusion chambers (1) are each rotatably equipped with support rollers (3) and extrusion rollers (4). The support roller (3) and the adjacent extrusion roller (4) are in contact, and the interval between the two extrusion rollers (4) forms an extrusion channel. There is a gap between the extrusion channel and the spraying range of the first nozzle (6).
9. The online quenching equipment for aluminum profile rolling according to claim 1, characterized in that: A support frame (28) is provided at one end of the conveyor roller (5) away from the two extrusion chambers (1). Two limiting grooves (29) are provided on the outer side of the support frame (28), and a winding roller (30) for winding the aluminum profile after cooling is provided between the two limiting grooves (29).
10. A method for controlling online quenching of aluminum profiles during extrusion, applied to the online quenching equipment for aluminum profile rolling according to any one of claims 1 to 9, characterized in that, The control method includes the following steps: Material feeding stage: The gap between the two extrusion chambers (1) forms an extrusion channel. The extrusion channel is adjusted to the preset size, and the aluminum profile in the high temperature state is placed into the extrusion channel at a uniform speed until it is extruded into an aluminum plate of a specified shape. The plate is then received by the conveyor roller (5) outside the extrusion channel. First cooling and quenching: external clean water is drawn in and pressurized and then transported to the first nozzle (6) to realize the first nozzle (6) spraying clean water onto the aluminum plate, so that the spraying direction is at an angle of 150° to 180° with the moving direction of the aluminum plate, thereby realizing reverse spraying and reducing the vapor film on the surface of the aluminum plate. Second cooling and quenching: The tail water from the first cooling and quenching is filtered and then sent to the second nozzle (12). The second nozzle (12) sprays the tail water onto the back of the aluminum plate in a fan shape. The third cooling and quenching process involves drawing in external clean water, pressurizing it, and using it as a source of atomized water to deliver it to the third nozzle (18). The third nozzle (18) sprays atomized water toward the aluminum plate, maintaining a reverse impact to ensure stable heat exchange efficiency. Fourth cooling and quenching: drawing in outside air and delivering compressed air to the fourth nozzle (22), so that the fourth nozzle (22) blows cooling airflow into the aluminum plate array.