Aluminum alloy slab ingot cooling tool

Abstract

The utility model relates to the technical field of cooling tools, in particular to an aluminum alloy slab ingot cooling tool which comprises a cooling box, openings are formed in the two ends of the cooling box, three sets of gas jet assemblies are arranged at the top of the interior of the cooling box and distributed in the length direction of the cooling box, and each gas jet assembly comprises a gas pipeline. Openings in two ends of the gas pipeline extend out of the top of the cooling box; the bottom of the gas pipeline is communicated with a plurality of gas jet nozzles; three cooling liquid assemblies are arranged on the side wall of the interior of the cooling box and distributed in the length direction of the cooling box, each cooling liquid assembly comprises a cooling pipeline, openings in the two ends of each cooling pipeline extend out of the side wall of the cooling box, and the side, facing the interior of the cooling box, of each cooling pipeline communicates with a plurality of first atomization nozzles. The device can effectively reduce the temperature gradient of different parts of the slab ingot, avoids internal stress concentration and cracks caused by local temperature difference, and improves the cooling quality and the yield of the slab ingot.

Description

Technical Field

[0001] This utility model relates to the field of cooling fixture technology, specifically to a cooling fixture for aluminum alloy flat ingots. Background Technology

[0002] Aluminum alloy flat ingots are the main raw material for high-quality aluminum alloy plates, strips, and foils. The casting process involves pouring molten aluminum into a copper mold, which then allows for initial cooling and solidification. The formed alloy billet is straightened and cut into high-temperature alloy ingots of equal length, which are then cooled again. After cooling, the finished product can be stacked and stored or loaded onto trucks for sale. Cooling reduces the hardness of the aluminum alloy flat ingot to a suitable range, facilitating subsequent processing such as rolling, extrusion, and forging. Improper cooling can result in excessively high hardness, increasing processing difficulty and potentially damaging processing equipment.

[0003] When cooling high-temperature alloy ingots, traditional cooling devices spray cooling water evenly onto the surface of the ingots. However, high-temperature alloy ingots have a special structure, with a thicker core, a longer heat transfer path, and a relatively small heat dissipation area, while the edge part is the opposite, with a larger heat dissipation area and a shorter heat transfer path.

[0004] If the above-mentioned uniform spraying of cooling water is used, the cooling rate of different parts will be different. The contact area between the edge of the flat ingot and the air or cooling medium is large, and the heat can be dissipated more quickly. However, the heat dissipation in the core of the flat ingot is relatively difficult, and the temperature drops more slowly. The temperature difference between the edge and the core of the flat ingot will further increase. Therefore, the high-temperature alloy ingot is prone to stress concentration in the flat ingot due to local temperature difference, which will cause cracks and seriously affect the quality of aluminum alloy flat ingots, reduce the product qualification rate and performance. Utility Model Content

[0005] To address the technical problem that high-temperature aluminum alloy flat ingots are prone to internal stress concentration and cracking due to local temperature differences, this utility model provides a cooling fixture for aluminum alloy flat ingots.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A cooling fixture for aluminum alloy flat ingots includes a cooling box with openings at both ends. Three sets of gas jet assemblies are located at the top of the cooling box's interior, distributed along the length of the cooling box. Each gas jet assembly includes a gas pipe, with both ends extending out of the top of the cooling box. The bottom of the gas pipe is connected to several gas jet nozzles. The gas temperature emitted from the gas jet nozzles in the two sets of gas jet assemblies on the sides is lower than the gas temperature emitted from the gas jet nozzles in the middle gas jet assembly. Three sets of coolant assemblies are located on the sidewalls of the cooling box, distributed along the length of the cooling box. Each coolant assembly includes a cooling pipe, with both ends extending out of the sidewalls of the cooling box. The side of the cooling pipe facing inwards is connected to several first atomizing nozzles. The coolant temperature emitted from the first atomizing nozzles in the two sets of coolant assemblies on the sides is lower than the coolant temperature emitted from the first atomizing nozzles in the middle coolant assembly.

[0008] The above structural design utilizes the combination of gas jet assembly and coolant assembly to cool the flat ingot more efficiently by taking away its heat and accelerating the cooling rate. This takes advantage of the rapid flow of gas and the heat absorption characteristics of coolant vaporization.

[0009] Secondly, by installing three sets of gas jet components distributed along the length direction at the top of the cooling box and three sets of coolant components distributed along the length direction on the inner side walls, and by ensuring that the gas and coolant temperatures of the side components differ from those of the middle components, zoned cooling can be implemented to address the different heat dissipation needs of the aluminum alloy flat ingot's edges and center. The edges of the aluminum alloy flat ingot dissipate heat quickly, so lower-temperature gas and coolant are used to enhance cooling, creating a temperature gradient that promotes heat transfer from the core and center to the edges. This also allows for the formation of a surface hardening layer at the edges, improving the overall rigidity of the flat ingot and reducing deformation during cooling. The core dissipates heat slowly, so relatively higher-temperature gas and coolant are used for gradual cooling in the center of the flat ingot. This avoids excessive temperature differences between the core and center surfaces, effectively reducing the temperature gradient between different parts of the flat ingot, preventing stress concentration and cracking due to localized temperature differences, and improving the cooling quality and yield of the flat ingot.

[0010] As a preferred implementation of a cooling fixture for aluminum alloy flat ingots, each gas jet assembly includes two gas pipes, which are arranged along the width of the cooling box.

[0011] By adopting the above structural scheme, the coverage range of the gas jet is increased in the width direction, so that the gas can act more evenly on the upper surface of the aluminum alloy flat ingot, avoiding local cooling differences caused by uneven gas coverage, further improving the uniformity of cooling on the upper surface of the flat ingot, and ensuring the overall quality of the flat ingot.

[0012] As a preferred implementation of a cooling fixture for aluminum alloy flat ingots, an atomizing pipe is provided between two gas pipes. The atomizing pipe is located inside the cooling box, with its two ends extending out of the top of the cooling box. The bottom of the atomizing pipe is connected to several second atomizing nozzles, and the temperature of the second atomizing nozzles is higher than the temperature of the gas ejected from the gas jet nozzles on the corresponding two gas pipes.

[0013] By adopting the above structural design, a gradual temperature gradient is formed between the gas jet cooling zones, making the temperature change on the surface of the flat ingot more gradual. This avoids abrupt temperature changes between different cooling zones, further reducing the generation of internal stress. At the same time, the water vapor evaporation of the atomizing nozzle absorbs heat, assisting the gas jet in cooling and improving the cooling effect.

[0014] As a preferred implementation of a cooling fixture for aluminum alloy flat ingots, the cooling box is equipped with several cooling rollers inside. The axis of the cooling rollers is perpendicular to the length direction of the cooling box. The cooling rollers are distributed along the length direction of the cooling box. The two ends of the cooling rollers are rotatably installed on the side wall of the cooling box and extend out of the cooling box. The cooling rollers have a hollow internal structure. The two ends of the cooling rollers are provided with openings that communicate with the internal space of the cooling rollers. Several grooves are opened on the outer circumference of the cooling rollers. Water spray nozzles are installed in the grooves and communicate with the internal space of the cooling rollers.

[0015] With the above structural design, when the aluminum alloy flat ingot moves in the cooling box, the cooling roller can not only support and transport the flat ingot, but also spray water to the bottom of the flat ingot through water nozzles for cooling, thus achieving all-round cooling of the flat ingot.

[0016] As a preferred implementation of a cooling fixture for aluminum alloy flat ingots, sprockets are installed on the outer circumferential surface of the same end of the cooling rollers, and a chain surrounds all the sprockets. One end of the cooling roller is connected to a rotary motor.

[0017] The above structural design enables all cooling rollers to rotate synchronously, ensuring that the aluminum alloy flat ingot moves smoothly within the cooling box. This avoids problems such as jamming or shifting of the flat ingot during transport due to asynchronous rotation of the cooling rollers, thus ensuring the continuity and stability of the cooling process.

[0018] As a preferred implementation of a cooling fixture for aluminum alloy flat ingots, the output shaft of a rotary motor is connected to the end of the cooling roller via a belt and pulley drive.

[0019] With the above structural design, the belt drive provides buffering and shock absorption, reducing the impact on the cooling rollers during motor startup and operation, and extending the equipment's service life. Furthermore, the belt drive's transmission ratio can be adjusted according to actual needs, facilitating control of the cooling roller's speed to accommodate aluminum alloy flat ingots of different specifications and cooling requirements.

[0020] As a preferred implementation of a cooling fixture for aluminum alloy flat ingots, baffles are provided at the bottom of the openings at both ends of the cooling box, and several drain valves are provided at the bottom of the side wall of the cooling box, with the drain valves distributed along the length of the cooling box.

[0021] With the above structural design, baffles are installed at the bottom of the openings at both ends of the cooling tank to effectively prevent coolant from flowing out from both ends, thus preventing coolant from splashing into the work area and maintaining a clean and safe working environment. Drain valves are installed at the bottom of the side walls of the cooling tank to facilitate the timely drainage of excess coolant generated during the cooling process, preventing coolant accumulation inside the cooling tank and affecting cooling efficiency and normal equipment operation. The drain valves are distributed along the length of the tank, allowing for more comprehensive drainage of coolant from different locations, ensuring effective drainage.

[0022] As a preferred implementation method for cooling aluminum alloy flat ingots, the gas ejected by the gas jet nozzle is nitrogen.

[0023] Using the above structural design, nitrogen, being an inert gas with stable chemical properties, will not react chemically with the aluminum alloy flat ingot during the cooling process, thus avoiding any impact on the quality of the flat ingot due to oxidation or other reactions between the gas and the ingot. Simultaneously, nitrogen has good cooling performance, effectively removing heat from the flat ingot.

[0024] As a preferred implementation of a cooling fixture for aluminum alloy flat ingots, the first atomizing nozzle is a conical diffusion nozzle.

[0025] With the above structural design, the first atomizing nozzle is a conical diffusion nozzle, which can spray the coolant in a conical diffusion manner, so that the coolant can cover the side of the aluminum alloy flat ingot more widely, increase the contact area between the coolant and the flat ingot, and improve the cooling efficiency and uniformity.

[0026] As a preferred implementation of a cooling fixture for aluminum alloy flat ingots, the length of the gas pipes in the two sets of gas jet assemblies on both sides is less than the length of the gas pipes in the gas jet assembly in the middle; the length of the cooling pipes in the two sets of coolant assemblies on both sides is less than the length of the cooling pipes in the coolant assembly in the middle.

[0027] With the above structural design, the gas pipe lengths in the two sets of gas jet assemblies on both sides are shorter than the gas pipe length in the middle, and the cooling pipe lengths in the two sets of coolant assemblies on both sides are shorter than the cooling pipe length in the middle. By rationally adjusting the pipe lengths according to the different cooling requirements of the edge and center of the flat ingot, the gas and coolant supply to the edge area becomes more concentrated and efficient, while the center area has a wider coverage range, further optimizing the zoned cooling effect and improving the cooling accuracy.

[0028] The beneficial effects of this utility model are as follows:

[0029] 1. Combination of two cooling methods: The cooling method combines gas jet components and coolant components, which utilizes the rapid flow of gas and the heat absorption characteristics of coolant vaporization, and can more efficiently remove the heat from the flat ingot and accelerate the cooling speed.

[0030] 2. Zoned Cooling: By installing three sets of gas jet components distributed along the length of the top inside the cooling box, and three sets of coolant components distributed along the length of the length of the inner side walls, and ensuring that the gas and coolant temperatures of the side components differ from those of the middle components, zoned cooling can be implemented to address the different heat dissipation needs of the aluminum alloy flat ingot's edges and center. The edges of the aluminum alloy flat ingot dissipate heat quickly, so lower-temperature gas and coolant are used to enhance cooling, creating a temperature gradient that promotes heat conduction from the core and center to the edges. This also helps form a surface hardening layer at the edges, improving the overall rigidity of the flat ingot and reducing deformation during cooling. The core dissipates heat slowly, so relatively higher-temperature gas and coolant are used for slow cooling in the center of the flat ingot. This avoids excessive temperature differences between the core and center surfaces, effectively reducing the temperature gradient between different parts of the flat ingot, preventing stress concentration and cracking caused by localized temperature differences, and improving the cooling quality and yield of the flat ingot. Attached Figure Description

[0031] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a front view structural diagram of the aluminum alloy flat ingot cooling fixture in a specific embodiment of this utility model;

[0033] Figure 2 This is a side view of the aluminum alloy flat ingot cooling fixture in a specific embodiment of the present invention.

[0034] List of components and reference numerals:

[0035] 1. Cooling box; 2. Gas jet assembly; 21. Gas pipe; 22. Gas jet nozzle; 3. Coolant assembly; 31. Cooling pipe; 32. First atomizing nozzle; 4. Atomizing pipe; 5. Second atomizing nozzle; 6. Cooling roller; 61. Groove; 7. Sprocket; 8. Chain; 9. Rotary motor; 10. Belt; 11. Pulley; 12. Baffle; 13. Drain valve. Detailed Implementation

[0036] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] Reference Figure 1-2 This embodiment proposes a cooling fixture for aluminum alloy flat ingots, including a cooling box 1. The cooling box 1 has openings at both ends, and baffles 12 are provided at the bottom of the openings at both ends of the cooling box 1. Several drain valves 13 are provided at the bottom of the side wall of the cooling box 1, and the drain valves 13 are distributed along the length of the cooling box 1.

[0038] The top of the interior of the cooling chamber 1 is equipped with three sets of gas jet assemblies 2, which are distributed along the length of the cooling chamber 1. Each gas jet assembly 2 includes a gas pipe 21, with both ends of the gas pipe 21 extending out from the top of the cooling chamber 1. The bottom of the gas pipe 21 is connected to several gas jet nozzles 22, and the gas ejected by the gas jet nozzles 22 is nitrogen. The gas temperature ejected by the gas jet nozzles 22 in the two sets of gas jet assemblies 2 on the sides is lower than the gas temperature ejected by the gas jet nozzles 22 in the middle set of gas jet assemblies 2. The length of the gas pipes 21 in the two sets of gas jet assemblies 2 on the sides is shorter than the length of the gas pipes 21 in the middle set of gas jet assemblies 2.

[0039] Each gas jet assembly 2 includes two gas pipes 21, which are arranged along the width of the cooling box 1. An atomizing pipe 4 is provided between the two gas pipes 21. The atomizing pipe 4 is located inside the cooling box 1, with its two ends opening out of the top of the cooling box 1. The bottom of the atomizing pipe 4 is connected to several second atomizing nozzles 5. The second atomizing nozzles 5 are conical diffusion nozzles, and their temperature is higher than the temperature of the gas ejected from the gas jet nozzles 22 on the corresponding two gas pipes 21.

[0040] The internal sidewall of the cooling tank 1 is provided with three sets of coolant assemblies 3, which are distributed along the length of the cooling tank 1. Each coolant assembly 3 includes a cooling pipe 31, with both ends of the cooling pipe 31 extending out of the sidewall of the cooling tank 1. The side of the cooling pipe 31 facing the interior of the cooling tank 1 is connected to several first atomizing nozzles 32, which are conical diffusion nozzles. The temperature of the coolant sprayed by the first atomizing nozzles 32 in the two sets of coolant assemblies on the sides is lower than the temperature of the coolant sprayed by the first atomizing nozzle 32 in the middle set of coolant assemblies 3. The length of the cooling pipes 31 in the two sets of coolant assemblies on the sides is shorter than the length of the cooling pipes 31 in the middle set of coolant assemblies 3.

[0041] The cooling box 1 contains several cooling rollers 6, whose axes are perpendicular to the length of the cooling box 1 (i.e., the cooling rollers 6 are horizontally positioned). These cooling rollers 6 are distributed along the length of the cooling box 1. Both ends of the cooling rollers 6 are rotatably mounted to the side walls of the cooling box 1 and extend outwards. Each cooling roller 6 has a hollow internal structure with openings at both ends that communicate with its internal space. Several grooves 61 are formed on the outer circumference of each cooling roller 6, and water nozzles are installed within these grooves, communicating with the internal space of the cooling roller 6. Sprockets 7 are mounted on the outer circumference of each cooling roller 6 at the same end, and chains 8 surround all the sprockets 7. The end of the outermost cooling roller 6 is connected to a rotary motor 9. The output shaft of the rotary motor 9 is connected to the end of the cooling roller 6 via a belt 10 and pulleys 11.

[0042] In order to allow the aluminum alloy flat ingots to enter and exit the cooling box 1 more smoothly, in this embodiment, cooling rollers 6 can also be provided on the outer side of the openings at both ends of the cooling box 1. For fixation, the ends of the cooling rollers 6 on the outer side of the openings at both ends are connected to the ends of other cooling rollers 6 that extend out of the cooling box 1 through a connecting plate. The connecting plate is rotatably connected to the ends of the cooling rollers 6.

[0043] Working principle:

[0044] The aluminum alloy flat ingot enters through one end of the cooling box 1, and after being cooled inside the cooling box 1, it exits through the other end. During this process, the gas jet assembly 2, the coolant assembly 3, and the cooling roller 6 inside the cooling box 1 work together to cool the flat ingot from all directions.

[0045] Inside the cooling box 1, three sets of gas jet components 2 are distributed along the length of the top, with the gas ejected from the two sets of gas jet nozzles 22 on both sides having a lower gas temperature than the gas ejected from the middle gas jet nozzle 22. The edges of the aluminum alloy flat ingot dissipate heat quickly and require stronger cooling; the low-temperature gas can rapidly remove the heat from the edges. Conversely, the center dissipates heat slowly, so relatively high-temperature gas is used for gradual cooling to reduce the temperature gradient between the edges and the center of the flat ingot.

[0046] Gas is transported through gas pipe 21, which extends from both ends of the cooling box 1 and connects to an external gas source. The gas flows inside the pipe and is evenly sprayed onto the upper surface of the aluminum alloy flat ingot through several gas jet nozzles 22 connected at the bottom. The rapid flow of the gas removes heat, achieving a cooling effect.

[0047] The three sets of coolant components 3 on the side wall inside the cooling box 1 are also distributed along the length direction. The coolant temperature sprayed by the two sets of first atomizing nozzles 32 on both sides is lower than the coolant temperature sprayed by the first atomizing nozzle 32 in the middle, which is consistent with the temperature zoning strategy of the gas jet component 2 and adapts to the heat dissipation needs of different parts of the flat ingot.

[0048] Coolant is delivered via cooling pipe 31, which extends from both ends of the cooling tank 1 and connects to an external coolant supply system. The coolant is atomized and sprayed from several first atomizing nozzles 32 facing inwards from the cooling tank 1, forming fine droplets. These droplets adhere to the side of the flat ingot and absorb a large amount of heat during vaporization, thereby achieving the purpose of cooling the flat ingot.

[0049] Each gas jet assembly 2 has an atomizing pipe 4 between its two gas pipes 21, and the temperature of the second atomizing nozzle 5 at its bottom is higher than the temperature of the gas ejected from the gas jet nozzles 22 on the corresponding two gas pipes 21. This creates a transitional temperature gradient between the gas jet cooling zones, making the surface temperature change of the flat ingot more gradual and reducing internal stress. At the same time, the atomized coolant ejected from the second atomizing nozzle 5 can also assist in cooling through vaporization and heat absorption.

[0050] Several cooling rollers 6 are distributed along the length of the cooling box 1, with both ends rotatably mounted on the side wall of the cooling box 1 and extending outwards. The cooling rollers 6 not only support the aluminum alloy flat ingots, but also rotate synchronously under the drive of the rotary motor 9 through the connection of sprockets 7 and chains 8, so as to realize the conveying of the flat ingots and ensure that the flat ingots move smoothly within the cooling box 1.

[0051] The cooling roller 6 has a hollow internal structure. Coolant enters the internal space through the openings at both ends of the cooling roller 6, and is then sprayed out from the water nozzles in the grooves 61 on the outer circumference to cool the bottom of the flat ingot, achieving all-round cooling and increasing the comprehensiveness and uniformity of cooling. Anti-rotation joints are installed between the cooling roller 6 and the coolant pipes at both ends to prevent the pipes from rotating and tangling.

[0052] The baffles 12 at the bottom of the openings at both ends of the cooling tank 1 can prevent coolant from splashing out from both ends, keeping the working environment clean and safe.

[0053] The drain valve 13 at the bottom of the side wall of the cooling tank 1 can promptly drain excess coolant generated during the cooling process, preventing coolant accumulation from affecting the cooling effect and equipment operation.

[0054] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An aluminum alloy slab cooling tool comprising a cooling box (1) having both ends thereof opened, characterized in that, The top of the inside of the cooling box (1) is provided with three groups of gas jet components (2), which are distributed along the length direction of the cooling box (1), the gas jet component (2) comprises a gas pipeline (21), the two ends of the gas pipeline (21) are open and extend out of the top of the cooling box (1), the bottom of the gas pipeline (21) is in gas communication with a plurality of gas jet nozzles (22), the gas jet nozzles (22) in the two groups of jet components (2) located on the two sides emit gas at a lower temperature than the gas jet nozzles (22) in the gas jet component (2) located in the middle; The side wall of the inside of the cooling box (1) is provided with three groups of cooling liquid components (3), which are distributed along the length direction of the cooling box (1), the cooling liquid component (3) comprises a cooling pipeline (31), the two ends of the cooling pipeline (31) are open and extend out of the side wall of the cooling box (1), the side of the cooling pipeline (31) facing the inside of the cooling box (1) is in communication with a plurality of first atomizing nozzles (32), the first atomizing nozzles (32) in the two groups of cooling liquid components (3) located on the two sides emit cooling liquid at a lower temperature than the first atomizing nozzles (32) in the cooling liquid component (3) located in the middle.

2. The aluminum alloy slab cooling tooling of claim 1, wherein, Each group of gas jet components (2) comprises two gas pipelines (21), and the two gas pipelines (21) of each group of gas jet components (2) are arranged along the width direction of the cooling box (1).

3. The aluminum alloy slab cooling tooling of claim 2, wherein, A mist pipeline (4) is arranged between the two gas pipelines (21), the mist pipeline (4) is located in the inside of the cooling box (1), the two ends of the mist pipeline (4) are open and extend out of the top of the cooling box (1), the bottom of the mist pipeline (4) is in communication with a plurality of second atomizing nozzles (5), and the temperature of the second atomizing nozzles (5) is higher than the temperature of the gas jet nozzles (22) on the corresponding two gas pipelines (21).

4. The aluminum alloy slab cooling tooling of claim 1, wherein, A plurality of cooling rollers (6) are arranged in the inside of the cooling box (1), the axis of the cooling roller (6) is perpendicular to the length direction of the cooling box (1), the plurality of cooling rollers (6) are distributed along the length direction of the cooling box (1), the two ends of the cooling roller (6) are rotatably installed on the side wall of the cooling box (1) and extend out of the cooling box (1), the cooling roller (6) has a hollow structure, the two ends of the cooling roller (6) are provided with openings, the openings are in communication with the inside space of the cooling roller (6), and a plurality of grooves (61) are formed in the outer circumferential surface of the cooling roller (6), a water nozzle is arranged in each groove (61), and the water nozzle is in communication with the inside space of the cooling roller (6).

5. The aluminum alloy slab cooling tooling of claim 4, wherein, Chain wheels (7) are arranged on the outer circumferential surface of the same end of the cooling roller (6), chains (8) are arranged around all the chain wheels (7), and the end of one of the cooling rollers (6) is connected with a rotating motor (9).

6. The aluminum alloy slab cooling tooling of claim 5, wherein, The output shaft of the rotating motor (9) is in transmission connection with the end of the cooling roller (6) through a belt (10) and a pulley (11).

7. The aluminum alloy slab cooling tooling of claim 1, wherein, The bottom of the two ends of the cooling box (1) is provided with a baffle (12), and the bottom of the side wall of the cooling box (1) is provided with a plurality of drainage valves (13), which are distributed along the length direction of the cooling box (1).

8. The aluminum alloy slab cooling tooling of claim 1, wherein, The gas jetted from the gas jet nozzle (22) is nitrogen.

9. The aluminum alloy slab cooling tooling of claim 1, wherein, The first atomizing nozzle (32) is a conical diffusion nozzle.

10. The aluminum alloy slab cooling tooling of claim 1, wherein, The length of the gas pipe (21) in the two groups of gas jet assemblies (2) located at the two sides is less than the length of the gas pipe (21) in the gas jet assembly (2) located in the middle. The length of the cooling pipe (31) in the two groups of cooling liquid assemblies (3) located at the two sides is less than the length of the cooling pipe (31) in the cooling liquid assembly (3) located in the middle.

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