A method for preparing high-strength aluminum alloy without solution treatment

Abstract

This invention relates to a method for preparing high-strength aluminum alloys without solution treatment, belonging to the field of aluminum alloy preparation technology. Compared with existing aluminum alloy preparation methods, this method is more convenient, does not require special refining agents, and can be smelted using conventional aluminum alloy smelting methods. It does not require traditional aluminum alloy solution treatment, but only a single annealing treatment of the aluminum alloy profile. The preparation process is reduced, and the resulting aluminum alloy profile has high mechanical properties. At the same time, this method divides the annealing process into stages, effectively improving the annealing cooling efficiency of the aluminum alloy profile and reducing the thickness of the coarse grain layer, thus effectively improving the quality of the aluminum alloy profile.

Description

Technical Field

[0001] This invention relates to a method for preparing an aluminum alloy, and more particularly to a method for preparing a high-strength aluminum alloy without solution treatment, applicable to the field of aluminum alloy preparation technology. Background Technology

[0002] Aluminum alloys are a typical lightweight metal material. Due to their low density, excellent mechanical properties, good processing performance, non-toxicity, easy recycling, excellent electrical conductivity, thermal conductivity, and corrosion resistance, they are widely used in marine, chemical, aerospace, metal packaging, and transportation industries.

[0003] Aluminum alloys, as lightweight structural materials, generally require solution treatment and aging to achieve high strength. However, solution treatment necessitates rapid cooling (quenching), which can lead to severe deformation and scrapping of complex aluminum alloy components. To address the problems of severe deformation caused by solution treatment and insufficient strength to meet usage requirements without solution treatment in the production of large, thin-walled aluminum alloy structural components, this invention is proposed.

[0004] The specification of Chinese invention patent CN207362289U discloses "An Aluminum Alloy Annealing Cooling Furnace", which includes a furnace body, furnace door, air cooling device, water mist cooling device, air supply device and exhaust port. The furnace body has a furnace cavity, the cavity opening of which is located on the side wall of the furnace body. The furnace door is slidably connected to the side wall of the furnace body to selectively open and close the cavity opening. The air cooling device is installed on the opposite side walls of the furnace body, and the water mist cooling device is installed on the top of the furnace body and communicates with the furnace cavity. The aluminum alloy annealing cooling furnace has added an air supply device, and the working modes between the air cooling device and the water mist cooling device can be flexibly switched, so the working efficiency is higher and the cooling is faster and more uniform. Since the air cooling device and the water mist cooling device are simply switched, they cannot perform staged cooling of the aluminum alloy according to the annealing cooling steps. When the cooling rate of the ingot is slow, coarse, needle-like precipitates will precipitate in the ingot structure, which is not conducive to the subsequent processing of the aluminum alloy. When the cooling rate is too fast, a quenching effect will occur, and high-quality aluminum alloy materials cannot be obtained. Summary of the Invention

[0005] The technical problem that this invention aims to solve in view of the above-mentioned prior art is that solution treatment of aluminum alloys will cause severe deformation of aluminum alloy parts with complex structures, resulting in their scrapping.

[0006] To address the aforementioned problems, this invention provides a method for preparing a high-strength aluminum alloy without solution treatment. The method comprises the following components: silicon 8.0-11%, zinc 4.0-6.0%, magnesium 0.6-2.0%, manganese 0.15-0.40%, rare earth elements 0.01-0.3%, vanadium 0.01-0.03%, gallium 0.01-0.02%; titanium 0.05-0.15%, antimony 0.05-0.10%; strontium 0.0002-0.005%, iron impurities ≤0.15%, and the balance being aluminum.

[0007] Its preparation method includes the following steps:

[0008] S1: Place the aluminum alloy raw material into a vacuum melting furnace, evacuate the furnace to 1-0.1 Pa, heat to 650-750℃, and then cool to room temperature to produce an aluminum alloy;

[0009] S2: The aluminum alloy prepared in S1 is made into a profile, and the aluminum alloy profile is placed in an annealing furnace for annealing treatment. It is slowly heated to 175℃ and held for 8-12 hours.

[0010] S3: During the annealing process, the aluminum alloy profile is slowly heated to 175℃ and held for 8-12 hours. After the holding period, the aluminum alloy profile is cooled to room temperature using a stepped cooling structure in three stages to obtain a high-strength aluminum alloy profile that does not require solution treatment.

[0011] In the above-mentioned method for preparing high-strength aluminum alloys without solution treatment, there is no need for solution treatment and aging treatment to strengthen the alloy; only aluminum alloy annealing is required. This reduces the number of aluminum alloy preparation steps and effectively improves the mechanical properties of the aluminum alloy.

[0012] As a further improvement of this application, the aluminum alloy raw material is composed of pure aluminum ingots, alloy ingots and modifiers; the alloy ingots include aluminum-silicon alloy ingots, zinc-aluminum alloy ingots, aluminum-antimony alloy ingots, aluminum-magnesium alloy ingots, and aluminum-vanadium alloy ingots; the modifiers include aluminum-rare earth alloys, aluminum-strontium alloys, and aluminum-antimony alloys.

[0013] As a further improvement to this application, the three cooling ranges of the S3 stepped cooling structure are: stage one 175℃-140℃, stage two 140℃-80℃, and stage three 80℃-room temperature.

[0014] As a further improvement of this application, the stepped cooling structure includes a placement platform installed inside the furnace body of the annealing furnace and a cooling water tank at the bottom of the furnace body. A cooling bracket is fixedly connected to the middle of the placement platform, and a lifting pipe is inserted into the middle of the cooling bracket. The bottom of the lifting pipe movably passes through the placement platform. A lifting plate is fixedly connected to the bottom of the lifting pipe. A suction cup plate is provided at the bottom of the lifting plate. Multiple suction cup funnels are fixedly connected to the middle of the suction cup plate, and the multiple suction cup funnels are inserted and correspond to the lifting pipe. A spiral push impeller is fixedly connected to the bottom of the cooling water tank. The spiral push impeller is vertically corresponding to the suction cup funnels. Water is sent into the suction cup funnels by the spiral push impeller and enters the lifting pipe. Water cooling of the aluminum alloy profiles on the placement platform is achieved by adjusting the height of the lifting pipe.

[0015] As a further improvement to this application, a cold air inlet is fixedly connected to the middle of the placement platform, and a blocking column is fixedly connected to the upper surface of the suction plate. The blocking column moves through the lifting plate and is inserted into the cold air inlet. Guide grooves are opened on both sides of the cooling bracket, and a water receiving groove is opened on the top of the cooling bracket. The guide grooves are vertically aligned with the cold air inlet. Exhaust pipes are fixedly connected to both ends of the top of the furnace body. The heated blocking column falls with the suction plate, detaches from the cold air inlet, and sinks into the cooling water tank, generating a large amount of water vapor. The outside air carries the water vapor and is drawn into the furnace body through the cold air inlet to cool the aluminum alloy profiles inside the furnace body. When the water flows in the guide grooves and water receiving grooves on the cooling bracket, the heat of the cooling bracket causes a large amount of water to evaporate, further generating water vapor, effectively improving the cooling effect of water vapor and air on the aluminum alloy profiles.

[0016] As a further improvement to this application, a transverse diversion groove is fixedly connected to the top of the riser pipe. The width of the transverse diversion groove is smaller than that of the water receiving groove. Water outlets are provided on both sides of the transverse diversion groove. When the riser pipe descends to the height of the cooling bracket, the transverse diversion groove is at the top of the water receiving groove. Water overflows from the water outlets and is received by the water receiving groove, which facilitates the flow of cooling water on the cooling bracket.

[0017] As a further improvement to this application, the dripping pipe at the top of the furnace body has a fixed insertion slot in the middle. The lifting pipe and the horizontal diversion slot are both inserted into the insertion slot. When the lifting pipe rises to the height of the dripping pipe, cooling water enters the dripping pipe by inserting the lifting pipe and the horizontal diversion slot into the insertion slot, which facilitates the cooling water to spray and cool the aluminum alloy profile through the dripping pipe.

[0018] As another improvement of this application, sliding rails are fixedly connected to both sides of the bottom of the placement platform, and lifting brackets and suction cup brackets are slidably connected to the top and bottom of the inner side of the sliding rails, respectively. The lifting brackets correspond to the lifting plate, and the suction cup brackets correspond to the suction cup plate. The lifting brackets and suction cup brackets are used to distinguish and restrict the descent of the lifting plate and the suction cup plate, respectively.

[0019] As a further improvement to this application, bracket teeth are fixedly connected to the inner sides of both the lifting bracket and the suction cup bracket, and disc teeth are fixedly connected to both sides of both the lifting plate and the suction cup plate. The bracket teeth and disc teeth are vertically in contact with each other. The lifting plate and suction cup plate are lifted and restricted by the bracket teeth supporting the disc teeth. The lifting plate and suction cup plate are lowered by offsetting the bracket teeth and disc teeth.

[0020] As a further improvement to this application, a lifting cylinder is fixedly connected to the top of the rear end of the cooling water tank, and a lifting bracket is fixedly connected to the output end of the lifting cylinder. The lifting bracket is in contact with the bottom end face of the suction plate. The lifting cylinder drives the lifting bracket to rise and lift the suction plate, thereby raising the lifting plate and the suction plate from the cooling water tank.

[0021] In summary, this method for preparing high-strength aluminum alloys without solution treatment is convenient, requiring no special refining agents. It can be smelted using conventional aluminum alloy smelting methods, eliminating the need for traditional solution treatment. Only a single annealing treatment of the aluminum alloy profile is required, reducing the number of preparation steps. Furthermore, the resulting aluminum alloy profile possesses high mechanical properties. Additionally, this method differentiates the annealing cooling process into stages, effectively improving the annealing cooling efficiency of the aluminum alloy profile and reducing the thickness of the coarse grain layer, thus significantly improving the quality of the aluminum alloy profile. Attached Figure Description

[0022] Figure 1 This is a diagram showing the main components of the first embodiment of this application;

[0023] Figure 2 This is a front-view stereoscopic diagram of the second embodiment of this application;

[0024] Figure 3 This is a rear-view stereoscopic diagram of the second and third embodiments of this application;

[0025] Figure 4 This is a demonstration diagram of steam cooling according to the second embodiment of this application;

[0026] Figure 5 This is a demonstration diagram of water cooling according to the second embodiment of this application;

[0027] Figure 6 This is a top-view perspective structural diagram of the placement platform according to the second embodiment of this application;

[0028] Figure 7 This is a bottom-view perspective structural diagram of the platform for the second embodiment of this application;

[0029] Figure 8 This is a side cross-sectional view of the second embodiment of this application;

[0030] Figure 9 This is a front sectional view of the second embodiment of this application;

[0031] Figure 10 This is a bottom view of the drip irrigation pipe according to the second embodiment of this application;

[0032] Figure 11 This is a perspective view of the lifting plate according to the third embodiment of this application;

[0033] Figure 12 This is a perspective view of the suction cup according to the third embodiment of this application;

[0034] Figure 13 This is a three-dimensional structural diagram of the lifting bracket according to the third embodiment of this application.

[0035] Explanation of the labels in the diagram:

[0036] 1. Furnace body; 2. Placement platform; 201. Cooling bracket; 202. Lifting pipe; 203. Lifting plate; 204. Suction hood plate; 205. Suction hood funnel; 206. Guide channel; 207. Water receiving tank; 3. Cooling water tank; 301. Spiral pusher impeller; 4. Cold air inlet; 401. Blocking column; 5. Exhaust duct; 6. Horizontal diversion channel; 601. Water outlet notch; 7. Drip pipe; 701. Insertion groove; 8. Sliding rail; 801. Lifting bracket; 802. Suction hood bracket; 803. Bracket teeth; 804. Plate teeth; 9. Lifting cylinder; 901. Lifting bracket. Detailed Implementation

[0037] The three embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0038] First implementation method:

[0039] Figure 1 The diagram illustrates a method for preparing a high-strength aluminum alloy without solution treatment. The aluminum alloy composition is as follows: silicon 8.0-11%, zinc 4.0-6.0%, magnesium 0.6-2.0%, manganese 0.15-0.40%, rare earth 0.01-0.3%, vanadium 0.01-0.03%, gallium 0.01-0.02%; titanium 0.05-0.15%, antimony 0.05-0.10%; strontium 0.0002-0.005%, iron impurities ≤0.15%, and the balance being aluminum.

[0040] Its preparation method includes the following steps:

[0041] S1: Place the aluminum alloy raw material into a vacuum melting furnace, evacuate the furnace to 1-0.1 Pa, heat to 650-750℃, and then cool to room temperature to produce an aluminum alloy;

[0042] S2: The aluminum alloy prepared in S1 is made into a profile, and the aluminum alloy profile is placed in an annealing furnace for annealing treatment. It is slowly heated to 175℃ and held for 8-12 hours.

[0043] S3: During the annealing process, the aluminum alloy profile is slowly heated to 175℃ and held for 8-12 hours. After the holding period, the aluminum alloy profile is cooled to room temperature using a stepped cooling structure in three stages to obtain a high-strength aluminum alloy profile that does not require solution treatment.

[0044] The aluminum alloy raw materials consist of pure aluminum ingots, alloy ingots, and modifiers; the alloy ingots include aluminum-silicon alloy ingots, zinc-aluminum alloy ingots, aluminum-antimony alloy ingots, aluminum-magnesium alloy ingots, and aluminum-vanadium alloy ingots; the modifiers include aluminum-rare earth alloys, aluminum-strontium alloys, and aluminum-antimony alloys. The three cooling intervals of the S3 stepped cooling structure are: stage one 175℃-140℃, stage two 140℃-80℃, and stage three 80℃-room temperature.

[0045] Second implementation method:

[0046] Figure 2-10 As shown, the stepped cooling structure includes a placement platform 2 installed inside the furnace body 1 of the annealing furnace and a cooling water tank 3 at the bottom of the furnace body 1. A cooling bracket 201 is fixedly connected to the middle of the placement platform 2. A lifting pipe 202 is inserted into the middle of the cooling bracket 201, and the bottom of the lifting pipe 202 moves through the placement platform 2. A lifting plate 203 is fixedly connected to the bottom end of the lifting pipe 202. A cold air inlet 4 is fixedly connected to the middle of the placement platform 2. A blocking column 401 is fixedly connected to the upper surface of the suction plate 204. The blocking column 401 moves through the lifting plate 203 and is inserted into the cold air inlet 4. Both ends of the top of the furnace body 1 are fixedly connected to exhaust pipes 5. The heated blocking column 401 follows the fall of the suction plate 204, detaches from the cold air inlet 4 and sinks into the cooling water tank 3, generating a large amount of water vapor. The outside air carries the water vapor and is drawn into the furnace body 1 through the cold air inlet 4 to cool the aluminum alloy profiles inside the furnace body 1.

[0047] During the first stage of cooling of the aluminum alloy profiles inside furnace body 1, such as Figure 4 As shown, the lifting plate 203 and the suction plate 204 fall into the cooling water tank 3, the blocking column 401 detaches from the cold air inlet 4, and the high-temperature blocking column 401 sinks into the cooling water tank 3 to generate a large amount of water vapor. At the same time, the exhaust pipe 5 drives the hot air inside the furnace body 1 to be discharged, generating negative pressure to draw in external air from the cold air inlet 4; the cold air drawn into the furnace body 1 carries water vapor into the furnace body 1 to cool the aluminum alloy profile.

[0048] The cooling bracket 201 has guide grooves 206 on both sides and a water receiving groove 207 on the top. The guide grooves 206 are vertically aligned with the cold air inlet 4. The bottom of the lifting plate 203 is equipped with a suction plate 204. Multiple suction funnels 205 are fixedly connected to the middle of the suction plate 204, and the multiple suction funnels 205 are inserted into and correspond to the lifting pipe 202. The bottom of the cooling water tank 3 is fixedly connected with a spiral push impeller 301, and the spiral push impeller 301 is connected to the suction funnels 207. 05 Vertically aligned, the spiral pusher impeller 301 sends water into the suction funnel 205 and into the riser pipe 202. The top of the riser pipe 202 is fixedly connected to a horizontal diversion groove 6. The width of the horizontal diversion groove 6 is smaller than that of the water receiving groove 207. Water outlets 601 are opened on both sides of the horizontal diversion groove 6. When the riser pipe 202 descends to the height of the cooling bracket 201, water overflows from the water outlets 601 and is received by the water receiving groove 207, which facilitates the flow of cooling water on the cooling bracket 201.

[0049] In the second stage of cooling the aluminum alloy profiles inside furnace body 1, such as Figure 4 As shown, the riser pipe 202 is in a descending state. The horizontal diversion groove 6 at the top of the riser pipe 202 is at the top of the water receiving tank 207. Water rising from the riser pipe 202 enters the horizontal diversion groove 6, and then the water overflows from the water outlet 601. The overflowing water falls into the water receiving tank 207, and the subsequent water flows on the cooling bracket 201 through the guide groove 206. While the water cools the cooling bracket 201, the heat of the cooling bracket 201 itself heats the flowing water, generating a large amount of water vapor. The water vapor assists the cold air entering from the cold air inlet 4 to further cool the aluminum alloy profile.

[0050] Figure 5 As shown, the drip pipe 7 at the top of the furnace body 1 has a fixed insertion groove 701 in the middle, such as... Figure 10 As shown, the riser pipe 202 and the transverse diversion groove 6 are both connected to the insertion groove 701. When the riser pipe 202 rises to the height of the dripping pipe 7, the cooling water enters the dripping pipe 7 by connecting the riser pipe 202 and the transverse diversion groove 6 to the insertion groove 701, so that the cooling water can cool the aluminum alloy profile by dripping water through the dripping pipe 7.

[0051] In the final stage of cooling the aluminum alloy profiles inside furnace body 1, such as Figure 5 As shown, the lifting pipe 202 rises to its maximum height and is connected to the dripping pipe 7 by inserting it into the insertion slot 701. The cooling water entering the dripping pipe 7 drips evenly from the top of the furnace body 1 to cool the aluminum alloy profile.

[0052] The third implementation method:

[0053] Figure 3 , Figure 11 , Figure 12 and Figure 13 As shown, sliding rails 8 are fixedly connected to both sides of the bottom of the placement platform 2. A lifting bracket 801 and a suction cup bracket 802 are slidably connected to the top and bottom of the inner side of the sliding rails 8, respectively. The lifting bracket 801 corresponds to the lifting plate 203, and the suction cup bracket 802 corresponds to the suction cup plate 204. The lifting bracket 801 and suction cup bracket 802 are used to differentiate and restrict the descent of the lifting plate 203 and the suction cup plate 204, respectively. Bracket teeth 803 are fixedly connected to the inner side of both the lifting bracket 801 and the suction cup bracket 802. Disc teeth 804 are fixedly connected to both sides of the lifting plate 203 and the suction cup plate 204. 3 is in direct contact with the vertical protrusion 804 of the disc. The support protrusion 803 supports the disc protrusion 804 to achieve the lifting restriction of the lifting disc 203 and the suction disc 204. The support protrusion 803 and the disc protrusion 804 are staggered to allow the lifting disc 203 and the suction disc 204 to fall. The top of the rear end of the cooling water tank 3 is fixedly connected to the lifting cylinder 9. The output end of the lifting cylinder 9 is fixedly connected to the lifting bracket 901. The lifting bracket 901 is in contact with the bottom end face of the suction disc 204. The lifting cylinder 9 drives the lifting bracket 901 to rise and lift the suction disc 204, so that the lifting disc 203 and the suction disc 204 can be raised from the cooling water tank 3.

[0054] When annealing and cooling aluminum alloy profiles, the lifting bracket 801 and suction bracket 802 are pulled to offset the bracket teeth 803 and the disc teeth 804. The lifting disc 203 and suction disc 204 descend into the cooling water tank 3. When the lifting cylinder 9 drives the lifting bracket 901 to rise, it lifts the bottom of the suction disc 204 and lifts the lifting disc 203 together from the cooling water tank 3. If the lifting bracket 901 is restored to support the lifting disc 203, it will not affect the suction disc 204 sinking into the cooling water tank 3.

[0055] In light of current practical needs, the above-described embodiments adopted in this application are not limited to this scope of protection. Various changes made within the knowledge of those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. A method for preparing a high-strength aluminum alloy without solution treatment, characterized in that: The aluminum alloy has the following composition: silicon 8-11%, zinc 4.0-6.0%, magnesium 0.6-2.0%, manganese 0.15-0.40%, rare earth 0.01-0.3%, vanadium 0.01-0.03%, gallium 0.01-0.02%; titanium 0.05-0.15%, antimony 0.05-0.10%; strontium 0.0002-0.005%, iron impurities ≤0.15%, and the balance being aluminum; Its preparation method includes the following steps: S1: Place the aluminum alloy raw material into a vacuum melting furnace, evacuate the furnace to 1-0.1 Pa, heat to 650-750℃, and then cool to room temperature to produce an aluminum alloy; S2: The aluminum alloy prepared in S1 is made into a profile, and the aluminum alloy profile is placed in an annealing furnace for annealing treatment. It is slowly heated to 175℃ and held for 8-12 hours. S3: During the annealing process, the aluminum alloy profile is slowly heated to 175℃ and held for 8-12 hours. After the holding period, the aluminum alloy profile is cooled to room temperature using a stepped cooling structure in three stages to obtain a high-strength aluminum alloy profile that does not require solution treatment. The S3 stepped cooling structure has three cooling zones: stage one 175℃-140℃, stage two 140℃-80℃, and stage three 80℃-room temperature. The stepped cooling structure includes a placement platform (2) installed inside the furnace body (1) of the annealing furnace and a cooling water tank (3) at the bottom of the furnace body (1). A cooling bracket (201) is fixedly connected to the middle of the placement platform (2). Multiple lifting pipes (202) are inserted into the middle of the cooling bracket (201), and the bottom of the lifting pipes (202) can move through the placement platform (2). A lifting plate (203) is fixedly connected to the bottom of the lifting pipe (202). A suction plate (204) is provided at the bottom of the lifting plate (203). Multiple suction funnels (205) are fixedly connected to the middle of the suction plate (204), and the multiple suction funnels (205) are inserted and correspond to the lifting pipes (202). A spiral push impeller (301) is fixedly connected to the bottom of the cooling water tank (3), and the spiral push impeller (301) is vertically corresponding to the suction funnels (205). A cold air inlet (4) is fixedly connected to the middle of the placement platform (2), and a blocking column (401) is fixedly connected to the upper surface of the suction plate (204). The blocking column (401) movably passes through the lifting plate (203) and is inserted into the cold air inlet (4). A guide groove (206) is provided on both sides of the cooling bracket (201), and a water receiving groove (207) is provided on the top of the cooling bracket (201). The guide groove (206) is vertically corresponding to the cold air inlet (4). An exhaust pipe (5) is fixedly connected to both ends of the top of the furnace body (1). The top end of the lifting pipe (202) is fixedly connected to a horizontal diversion groove (6). The width of the horizontal diversion groove (6) is smaller than that of the water receiving groove (207). Water outlet notches (601) are opened on both sides of the horizontal diversion groove (6). The drip pipe (7) at the top of the furnace body (1) is fixedly connected to the middle of the drip pipe (7) with a plug groove (701). The lifting pipe (202) and the horizontal diversion groove (6) are both plugged into the plug groove (701). During the first stage of cooling the aluminum alloy profile inside the furnace body (1), the lifting plate (203) and the suction plate (204) fall into the cooling water tank (3), the blocking column (401) detaches from the cold air inlet (4), and the high-temperature blocking column (401) sinks into the cooling water tank (3) to generate a large amount of water vapor. At the same time, the exhaust pipe (5) drives the hot air inside the furnace body (1) to be discharged, generating negative pressure to draw in external air from the cold air inlet (4); the cold air drawn into the furnace body (1) carries water vapor into the furnace body (1) to cool the aluminum alloy profile. In the second stage of cooling the aluminum alloy profile inside the furnace body (1), the lifting pipe (202) is in a descending state, and the horizontal diversion groove (6) at the top of the lifting pipe (202) is at the top of the water receiving tank (207). Water rising from the lifting pipe (202) enters the horizontal diversion groove (6), and the subsequent water overflows from the water outlet (601). The overflowing water falls into the water receiving tank (207), and the subsequent water flows on the cooling bracket (201) through the guide groove (206). While the water is cooling the cooling bracket (201), the heat of the cooling bracket (201) itself heats the flowing water, generating a large amount of water vapor. The water vapor assists the cold air entering from the cold air inlet (4) to further cool the aluminum alloy profile. In the final stage of cooling the aluminum alloy profile inside the furnace body (1), the lifting pipe (202) rises to its maximum height and is connected to the dripping pipe (7) by inserting it into the insertion slot (701). The cooling water entering the dripping pipe (7) drips evenly from the top of the furnace body (1) to cool the aluminum alloy profile.

2. The method for preparing a high-strength aluminum alloy without solution treatment according to claim 1, characterized in that: The bottom sides of the placement platform (2) are fixedly connected to sliding rails (8), and the top and bottom of the inner side of the sliding rails (8) are respectively slidably connected to lifting brackets (801) and suction cup brackets (802). The lifting brackets (801) correspond to the lifting plate (203), and the suction cup brackets (802) correspond to the suction cup plate (204).

3. The method for preparing a high-strength aluminum alloy without solution treatment according to claim 2, characterized in that: The inner sides of the lifting bracket (801) and the suction cup bracket (802) are fixedly connected with bracket protrusions (803), and the two sides of the lifting plate (203) and the suction cup plate (204) are fixedly connected with plate protrusions (804). The bracket protrusions (803) and the plate protrusions (804) are vertically in contact with each other.

4. The method for preparing a high-strength aluminum alloy without solution treatment according to claim 3, characterized in that: A lifting cylinder (9) is fixedly connected to the top of the rear end of the cooling water tank (3). A lifting bracket (901) is fixedly connected to the output end of the lifting cylinder (9). The lifting bracket (901) is in contact with the bottom surface of the suction cup (204).

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