5052 secondary aluminum alloy preservation application preparation device

Abstract

The utility model discloses a 5052 secondary aluminum alloy preservation application preparation device which comprises a crusher, a cleaning machine is arranged on one side of the crusher, a sorting machine is arranged on the other side of the crusher, a smelting furnace is arranged near a discharge port of the sorting machine, and a horizontal continuous casting machine is arranged near a discharge port of the smelting furnace. According to the device, recycled 5052 aluminum alloy waste is subjected to primary crushing through the crusher and then put into the cleaning machine to be cleaned, most impurities and the like in the waste are washed away, and the cleaned 5052 aluminum alloy waste is put into the crusher again to be subjected to secondary crushing; the 5052 aluminum alloy waste is crushed into smaller material blocks, and non-metal inclusions, ferromagnetic inclusions, other non-ferrous metal inclusions and the like are removed through the sorting machine, so that the impurities in the recycled 5052 aluminum alloy waste can be greatly reduced, the quality of subsequent aluminum alloy ingots is improved, and the preservation recovery rate is improved.

Description

Technical Field

[0001] This utility model relates to the field of recycled aluminum alloy technology, specifically a preparation device for grade preservation application of 5052 recycled aluminum alloy. Background Technology

[0002] 5052 aluminum alloy belongs to the Al-Mg series and has a wide range of applications, especially in the construction industry, where it is indispensable and is considered one of the most promising alloys. It has good corrosion resistance, excellent weldability, good cold workability, and moderate strength. The main alloying element of 5052 aluminum alloy is magnesium, which contributes to its good formability, corrosion resistance, weldability, and moderate strength. It is used to manufacture aircraft fuel tanks and oil pipes, sheet metal parts for vehicles and ships, instrument panels, street light brackets and rivets, hardware products, and electrical appliance housings.

[0003] With increasing environmental awareness and the demand for resource conservation, the application of recycled aluminum is becoming more and more widespread. Recycled aluminum is an aluminum alloy obtained by remelting and refining waste aluminum alloy materials and scrap aluminum or aluminum-containing waste. Compared to primary aluminum refined from aluminum ore, recycled aluminum consumes only 1.6% of the electricity and emits only about 5% of the carbon, achieving the recycling of aluminum resources and demonstrating significant energy conservation and emission reduction effects. For a long time, due to the complex composition of waste aluminum raw materials, most existing recycled aluminum alloy ingots have poor ductility and can only be used to produce cast aluminum alloy products, resulting in the downgrading of many high-quality wrought aluminum alloy scraps. Furthermore, in the actual hot processing of existing recycled aluminum alloys for grade preservation, problems such as rheological instability and cracking often occur, generating a large amount of waste and wasting resources, leading to the inability to achieve grade preservation for some aluminum alloys. Therefore, we propose a 5052 recycled aluminum alloy grade preservation application preparation device. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a 5052 recycled aluminum alloy grade preservation application preparation device, which can greatly reduce the impurities in the recycled 5052 aluminum alloy waste, improve the quality of the subsequent 5052 aluminum alloy ingots, thereby improving the grade preservation recovery rate, and can effectively solve the problems in the background technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a 5052 recycled aluminum alloy grade preservation application preparation device, including a crusher, a washing machine is provided on one side of the crusher, a sorting machine is provided on the other side of the crusher, a smelting furnace is provided near the discharge port of the sorting machine, a horizontal continuous casting machine is provided near the discharge port of the smelting furnace, and a thermal simulation test machine is provided outside the smelting furnace for performing hot compression tests on cylindrical samples cut from the aluminum alloy billets smelted in the smelting furnace.

[0006] As a preferred embodiment of this invention, a drill hole for installing thermocouple wires is provided at the center of the end face of the cylindrical sample.

[0007] As a preferred embodiment of this invention, a graphite tantalum sheet is placed at each of the upper and lower ends of the cylindrical sample.

[0008] As a preferred technical solution of this utility model, the cleaning machine includes a cleaning box and a lifting cage for placing aluminum alloy fragments after being crushed once by the crusher. The lifting cage is provided with hanging rings at the four corners of its upper surface, and the upper surface of the cleaning box is open.

[0009] As a preferred technical solution of this utility model, a movable plate is hinged to the upper side surface of the cleaning tank. The width of the movable plate is greater than half the width of the opening above the cleaning tank. Two drive motors are symmetrically arranged on the outer side surface of the movable plate. The output shaft of the drive motor passes through the inner side surface of the movable plate and is connected to the stirring shaft through a coupling. Several stirring blades are evenly arranged on the outer peripheral side surface of the stirring shaft.

[0010] As a preferred embodiment of this utility model, two telescopic rods are symmetrically hinged on both sides of the cleaning tank, and the ends of the two telescopic rods are respectively hinged to the two sides of the movable plate.

[0011] As a preferred embodiment of this utility model, a support block corresponding to the movable plate is fixedly provided on the outer surface of the cleaning tank on the same side as the movable plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: First, the recycled 5052 aluminum alloy scrap is crushed once by a crusher and then fed into a cleaning machine for washing, removing most of the impurities. The cleaned 5052 aluminum alloy scrap is then fed back into the crusher for secondary crushing, breaking it into smaller pieces. These pieces are then separated by a sorting machine to remove non-metallic inclusions, ferromagnetic inclusions, and other non-ferrous metal inclusions. This significantly reduces the impurities in the recycled 5052 aluminum alloy scrap, improving the quality of subsequent aluminum alloy ingots and thus increasing the recycling rate. After removing impurities and other debris, the 5052 aluminum alloy scrap is smelted into billets in a melting furnace. Before being cast in a horizontal continuous casting machine, several cylindrical samples are cut and sent to a thermal simulation test. In-machine hot compression experiments were conducted, compressing samples at different deformation temperatures and rates to obtain rheological stress and strain data at different deformation temperatures and rates. Based on the data, the energy dissipation rate factor η and plastic flow instability parameter ξ at different deformation temperatures and rates were obtained. A hot working diagram with set strain values ​​was constructed. Then, based on the obtained hot working parameters, multiple hot rolling experiments were conducted on recycled 5052 aluminum alloy billets to finally obtain hot-rolled plates. For problems such as rheological instability and cracking that may occur in the actual hot working process of recycled 5052 aluminum alloy, a smaller sample was used to simulate the hot deformation of the alloy, avoiding the resource waste caused by a large amount of waste in the actual production hot working experiment, and further improving the grade preservation recycling rate of 5052 aluminum alloy. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the cylindrical sample of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the cleaning machine of this utility model;

[0016] Figure 4 This is a side view of the cleaning machine of this utility model;

[0017] Figure 5 This is a front view structural diagram of the cleaning machine of this utility model.

[0018] In the diagram: 1 Crusher, 2 Washer, 201 Washing Box, 202 Lifting Cage, 203 Hanging Ring, 204 Movable Plate, 205 Drive Motor, 206 Agitator Shaft, 207 Agitator Blade, 208 Telescopic Rod, 209 Support Block, 3 Sorter, 4 Melting Furnace, 5 Thermal Simulation Test Machine, 6 Horizontal Continuous Casting Machine, 7 Cylindrical Sample, 8 Drilling Hole, 9 Graphite Tantalum Sheet. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-5 This utility model provides a technical solution: a 5052 recycled aluminum alloy grade preservation application preparation device, including a crusher 1, which can be a commonly used double-roll crusher, etc. A washing machine 2 is arranged on one side of the crusher 1, and a sorting machine 3 is arranged on the other side of the crusher 1. The sorting machine 3 can be one or a combination of commonly used magnetic separators, air separators, flotation machines, eddy current separators, etc., and can be flexibly selected according to the specific type of 5052 aluminum alloy to be recycled. Before preparing 5052 recycled aluminum alloy, The recycled 5052 aluminum alloy scrap is first crushed by crusher 1 and then put into washing machine 2 for cleaning to remove most of the impurities. After cleaning, the 5052 aluminum alloy scrap is put back into crusher 1 for secondary crushing to break it into smaller pieces. Then, it is sorted by separator 3 to remove non-metallic inclusions, ferromagnetic inclusions and other non-ferrous metal inclusions. This can greatly reduce the impurities in the recycled 5052 aluminum alloy scrap, improve the quality of the subsequent 5052 aluminum alloy ingots, and thus improve the grade preservation and recycling rate.

[0021] A smelting furnace 4 is located near the discharge port of the sorting machine 3. The 5052 aluminum alloy scrap, after impurities and debris have been removed, is smelted into billets in the smelting furnace 4. A horizontal continuous casting machine 6 is located near the discharge port of the smelting furnace 4. A thermal simulation testing machine 5 is also located outside the smelting furnace 4 to conduct hot compression tests on cylindrical samples 7 cut from the aluminum alloy billets smelted in the smelting furnace 4. The thermal simulation testing machine 5 is preferably a Gleeble-1500D thermal simulation testing machine. Before the billets are fed into the horizontal continuous casting machine 6 for casting, several cylindrical samples 7 are cut and fed into the thermal simulation testing machine 5 for hot compression tests. The samples are compressed at different deformation temperatures and deformation rates to obtain... Rheological stress and strain data at different deformation temperatures and rates were obtained. Based on the data, the energy dissipation rate factor η and plastic flow instability parameter ξ at different deformation temperatures and rates were obtained. A hot working diagram with set strain values ​​was constructed. Then, based on the obtained hot working parameters, a multi-pass hot rolling experiment was conducted on the recycled 5052 aluminum alloy billet to finally obtain a hot-rolled plate. For problems such as rheological instability and cracking that may occur in the actual hot working process of recycled 5052 aluminum alloy, a smaller sample was used to simulate the hot deformation of the alloy, avoiding the resource waste caused by a large amount of waste in the actual production hot working experiment, and further improving the grade preservation recycling rate of 5052 aluminum alloy.

[0022] Specifically, a hot-compression cylindrical specimen 7 was cut from the recycled aluminum alloy billet using wire cutting. A drill hole 8 for installing a thermocouple wire was made at the center of the end face of the cylindrical specimen 7. A hot compression test was conducted on the cylindrical specimen 7 using a thermal simulation testing machine 5. A graphite tantalum sheet 9 was placed at each of the upper and lower ends of the cylindrical specimen 7 to reduce friction and improve the accuracy of the test. The deformation amount, deformation temperature, and deformation rate were set, and the sample was compressed at different deformation temperatures and rates to obtain rheological stress and strain data at different deformation temperatures and rates. Based on the data, the energy dissipation rate factor η and the plastic flow instability parameter ξ at different deformation temperatures and rates were obtained. A hot working diagram with set strain values ​​was constructed. Based on the obtained hot working parameters, a multi-pass hot rolling test was conducted on the recycled 5052 aluminum alloy billet to finally obtain a hot-rolled plate.

[0023] Hot deformation experiments under different conditions on recycled aluminum alloys can improve their grain structure, promote the uniform distribution of the second phase, and enhance their mechanical properties and corrosion resistance. This process enables 5-series recycled aluminum alloys to achieve mechanical and performance levels comparable to virgin alloys, thus achieving grade-protected recycling applications.

[0024] Hot working diagrams are a common tool for evaluating the processing performance of materials. By drawing and analyzing hot working diagrams, the optimal hot working range and unstable areas in the diagram can be reflected intuitively, providing a theoretical reference for the actual hot working production of recycled 5-series aluminum alloys and ensuring the value of recycled aluminum for grade preservation and utilization.

[0025] Optionally, to avoid oxidation and burn-off, and to remove inclusions and gases, 5052 recycled aluminum is prone to reacting with moisture in the air during the smelting process, causing oxidation and burn-off and reducing the yield of recycled aluminum alloys; inclusions will also reduce the mechanical properties of recycled aluminum alloys. Therefore, a dual-chamber furnace production process is preferred, with all material conveying using enclosed conveyor belts to isolate air; and effective gas collection devices are installed at relevant dust-generating points, etc.

[0026] In a preferred embodiment, the cleaning machine 2 includes a cleaning tank 201 and a lifting cage 202 for holding aluminum alloy fragments after being crushed once by the crusher 1. The cleaning tank 201 has an inlet pipe connected to an external cleaning liquid tank on its upper side and a drain pipe for discharging wastewater and impurities after cleaning on its lower side. Hanging rings 203 are provided at the four corners of the upper surface of the lifting cage 202. The upper surface of the cleaning tank 201 is open, and the hoisting mechanism uses the hanging rings 203 to lift the 5052 aluminum alloy fragments after the first crushing. The lifting cage 202 for the fragments is moved above the cleaning tank 201 and lowered into the cleaning tank 201. The corresponding cleaning fluid is introduced into the cleaning tank 201 through the liquid inlet pipe to clean the 5052 aluminum alloy fragments after the first crushing, removing surface oil and impurities. After cleaning, the lifting cage 202 and the 5052 aluminum alloy fragments inside are lifted by the hoisting mechanism to the corresponding position for rinsing and drying. Then, they are put into the crusher 1 for secondary crushing, breaking them into smaller pieces for subsequent smelting.

[0027] In a further preferred embodiment, a movable plate 204 is hinged to the upper side surface of the cleaning tank 201. The width of the movable plate 204 is greater than half the width of the opening above the cleaning tank 201. Two drive motors 205 are symmetrically arranged on the outer surface of the movable plate 204. The output shaft of the drive motor 205 passes through the inner surface of the movable plate 204 and is connected to the stirring shaft 206 through a coupling. Several stirring blades 207 are evenly arranged on the outer circumferential surface of the stirring shaft 206. After the lifting cage 202 is placed into the cleaning tank 201, the movable plate 204 can be rotated to the top of the cleaning tank 201, so that the stirring shaft 206 and the stirring blades 207 enter the lifting cage 202. Then, the drive motors 205 are turned on, and the two drive motors 205 drive the stirring blades 207 to rotate in opposite directions through their respective stirring shafts 206. This can improve the cleaning efficiency and cleaning effect, thereby improving the quality of the recycled aluminum alloy.

[0028] Furthermore, two telescopic rods 208 are symmetrically hinged on both sides of the cleaning tank 201. The ends of the two telescopic rods 208 are respectively hinged to the two sides of the movable plate 204. The telescopic rods 208 can be commonly used electric push rods, cylinders, hydraulic cylinders, etc. The extension and retraction of the hinged telescopic rods 208 can drive the movable plate 204 to rotate automatically, which greatly improves the degree of automation and improves work efficiency.

[0029] The crusher 1, drive motor 205, telescopic rod 208, sorter 3, smelting furnace 4, thermal simulation test machine 5 and horizontal continuous casting machine 6 used in this application are all commonly used electronic components or equipment in the prior art. Their specific structures, working principles and circuit connections are all known technologies, and the control devices and control methods of each part are also prior art, which will not be described in detail.

[0030] Optionally, a support block 209 corresponding to the movable plate 204 is fixedly installed on the outer surface of the cleaning tank 201 on the same side as the movable plate 204. This support block supports the fully opened movable plate 204. When the movable plate 204 is fully opened, the stirring shaft 206 and stirring blades 207 are positioned above and away from the cleaning tank 201, thus not affecting the entry and exit of the lifting cage 202. Furthermore, the support block 209 also provides limiting protection for the movable plate 204 and the telescopic rod 208.

[0031] The parts not disclosed in this utility model are all prior art, and their specific structures, materials, and working principles will not be described in detail. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preparing 5052 recycled aluminum alloy for grade preservation applications, characterized in that: The equipment includes a crusher (1), a cleaning machine (2) on one side of the crusher (1), a sorting machine (3) on the other side of the crusher (1), a smelting furnace (4) near the discharge port of the sorting machine (3), a horizontal continuous casting machine (6) near the discharge port of the smelting furnace (4), and a thermal simulation test machine (5) for performing hot compression tests on cylindrical samples (7) cut from the aluminum alloy billet smelted by the smelting furnace (4) on the outside of the smelting furnace (4).

2. The 5052 recycled aluminum alloy grade preservation application preparation device according to claim 1, characterized in that: A drill hole (8) for installing thermocouple wires is provided at the center of the end face of the cylindrical sample (7).

3. The 5052 recycled aluminum alloy grade preservation application preparation device according to claim 1, characterized in that: A graphite tantalum sheet (9) is placed at each of the upper and lower ends of the cylindrical sample (7).

4. The 5052 recycled aluminum alloy grade preservation application preparation device according to claim 1, characterized in that: The cleaning machine (2) includes a cleaning box (201) and a lifting cage (202) for placing aluminum alloy fragments after being crushed once by the crusher (1). The lifting cage (202) has hanging rings (203) at the four corners of its upper surface, and the upper surface of the cleaning box (201) is open.

5. The 5052 recycled aluminum alloy grade preservation application preparation device according to claim 4, characterized in that: A movable plate (204) is hinged to the upper side surface of the cleaning tank (201). The width of the movable plate (204) is greater than half the width of the opening above the cleaning tank (201). Two drive motors (205) are symmetrically arranged on the outer surface of the movable plate (204). The output shaft of the drive motor (205) passes through the inner surface of the movable plate (204) and is connected to the stirring shaft (206) through a coupling. Several stirring blades (207) are evenly arranged on the outer peripheral surface of the stirring shaft (206).

6. The 5052 recycled aluminum alloy grade preservation application preparation device according to claim 5, characterized in that: The cleaning tank (201) has two telescopic rods (208) symmetrically hinged on both sides of its surface. The ends of the two telescopic rods (208) are respectively hinged to the two sides of the movable plate (204).

7. The 5052 recycled aluminum alloy grade preservation application preparation device according to claim 6, characterized in that: A support block (209) corresponding to the movable plate (204) is fixedly installed on the outer surface of the cleaning tank (201) on the same side as the movable plate (204).

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