Aluminum alloy melt temperature gradient control device

Abstract

The utility model relates to an aluminum alloy melt temperature gradient control device which comprises a shell, the shell is sequentially provided with a high-temperature area, a medium-temperature area and a low-temperature area in the vertical direction, an induction coil is arranged in the high-temperature area and wound on the outer surface of a container, an air heater is arranged on the outer surface of the container, the air outlet end of the air heater communicates with the medium-temperature area, and the air outlet end of the air heater communicates with the low-temperature area. A water cooling pipeline is arranged in the low-temperature area and arranged on the outer surface of the container in a sleeving mode. The method has the effect of improving the quality of the aluminum alloy casting.

Description

Technical Field

[0001] The present application relates to the technical field of aluminum alloy melt solidification, and in particular to a device for controlling the temperature gradient of an aluminum alloy melt. Background Art

[0002] Aluminum alloy melt refers to the state of aluminum alloy in liquid state at high temperature. It mainly consists of aluminum as the base metal and contains various other alloying elements. These alloying elements are added to the aluminum matrix in different proportions to change the properties of the aluminum alloy. Aluminum alloy castings are formed by solidifying the aluminum alloy melt in a specific container to form an aluminum alloy solid. The solid phase that first precipitates from the aluminum alloy melt during the solidification process is called the primary phase. The morphology, size and distribution of the primary phase have an important influence on the mechanical properties of the aluminum alloy castings.

[0003] However, conventional aluminum alloy melts are usually solidified by natural cooling. During the natural cooling process, the temperature distribution inside the aluminum alloy melt is uneven, so the precipitation position of the primary phase is random, resulting in uneven distribution of the primary phase. At the same time, since the natural cooling speed is usually slow, atoms have enough time to diffuse and gather on the crystal nuclei of the primary phase, causing the grains of the primary phase to continue to grow and form coarse grains. Local coarse grains are prone to become stress concentration points. When the aluminum alloy casting is subjected to external force, cracks are more likely to initiate and expand at the edges of the coarse grains.

[0004] Therefore, during the solidification process of the aluminum alloy melt solidified by natural cooling, the distribution of the primary phase of the aluminum alloy is uneven and coarse grains are likely to appear, which causes the quality of the aluminum alloy casting to be reduced, and there are obvious shortcomings. Utility Model Content

[0005] In order to improve the quality of aluminum alloy castings, the present application provides an aluminum alloy melt temperature gradient control device.

[0006] The present application provides an aluminum alloy melt temperature gradient control device that adopts the following technical solutions:

[0007] A temperature gradient control device for an aluminum alloy melt comprises a shell, the shell being provided with a container, the container being used to carry the aluminum alloy melt, the shell being provided with a high-temperature zone, a medium-temperature zone and a low-temperature zone in sequence along the vertical direction, an induction coil being provided in the high-temperature zone, the induction coil being wound around the outer surface of the container, a hot air blower being provided on the outer surface of the container, the air outlet end of the hot air blower being connected to the medium-temperature zone, a water-cooling pipe being provided in the low-temperature zone, the water-cooling pipe being sleeved on the outer surface of the container, and coolant flowing in the water-cooling pipe.

[0008] By adopting the above technical solution, during the solidification process of the aluminum alloy melt, the induction coil generates heat through electromagnetic induction, and the melt temperature in the high-temperature zone increases. At the same time, the hot air blower sends hot air into the medium-temperature zone, providing a heat source for the medium-temperature zone, so that the temperature of the medium-temperature zone is between the high-temperature zone and the low-temperature zone. In the low-temperature zone, the coolant in the water-cooling pipe absorbs the heat from the surface of the container, providing a low-temperature environment for the low-temperature zone, thereby forming a temperature gradient from the high-temperature zone to the low-temperature zone in the container. Since the temperature gradually increases from the high-temperature zone to the low-temperature zone, the primary phase is regularly distributed in the melt along the direction of decreasing temperature, avoiding the random distribution of the primary phase. At the same time, the solidification rate of the melt in the low-temperature zone is relatively fast. After the primary phase nucleates in the rapid solidification environment, the growth time is limited, and the time for atomic diffusion is reduced, thereby reducing the possibility of coarsening of the primary phase grains and suppressing the coarsening of the primary phase grains. The temperature gradient from the high-temperature zone to the low-temperature zone promotes uniform nucleation of the primary phase and guides the primary phase to grow upward, while refining the primary phase grains, ultimately improving the quality of the aluminum alloy casting.

[0009] Optionally, a first heat insulation plate and a second heat insulation plate are provided in the shell, and the first heat insulation plate and the second heat insulation plate are both sleeved on the outer surface of the shell, and the outer surfaces of the first heat insulation plate and the second heat insulation plate are tightly attached to the inner wall of the shell, the first heat insulation plate is located between the high temperature zone and the medium temperature zone, and the second heat insulation plate is located between the medium temperature zone and the low temperature zone.

[0010] By adopting the above technical solution, the arrangement of the first thermal insulation plate and the second thermal insulation plate reduces the heat transfer between different temperature zones, thereby ensuring that each temperature zone can be independently temperature controlled, preventing excessive heat from the high-temperature zone from being transferred to the medium-temperature zone, and excessive heat from the medium-temperature zone from being transferred to the low-temperature zone, thereby improving the accuracy of the temperature gradient and reducing the impact of temperature fluctuations on the uniformity of the primary phase.

[0011] Optionally, the air outlet end of the hot air blower is connected to an air supply pipe, a hot air cavity is opened in the first heat insulation board, the air outlet end of the air supply pipe is connected to the hot air cavity, and a plurality of air outlets are opened on the surface of the first heat insulation board facing the medium temperature zone, and the air outlet direction of the air outlet is set toward the medium temperature zone.

[0012] By adopting the above technical solution, the hot air flows into the hot air cavity through the air supply pipe and converges, and then flows into the medium temperature zone through the hot air outlet. At this time, due to the action of gravity, the hot air has a tendency to flow vertically in the medium temperature zone. The hot air cavity with higher temperature is arranged close to the high temperature zone. The heat of the hot air gradually decreases in the process of flowing toward the low temperature zone, so that the temperature distribution in the medium temperature zone is the same as the temperature direction of the temperature gradient, thereby further improving the uniformity of the temperature gradient temperature distribution, which is conducive to the stable growth of the primary phase and avoids uneven distribution of the primary phase or local defects due to uneven temperature.

[0013] Optionally, an annular groove is provided on the inner wall of the shell, and a windshield is rotatably arranged in the annular groove, and the windshield is sleeved on the outer surface of the container, and the windshield is tightly fitted with the surface of the first heat insulation plate facing the medium temperature zone. Ventilation holes corresponding to the multiple air outlets are provided on the windshield, and the ventilation holes and the air outlets are staggered. The outer surface of the windshield is sleeved with an outer gear ring, and the outer gear ring is rotatably arranged inside the annular groove. A motor is provided on the outer surface of the shell, and the output shaft of the motor is provided with a gear meshing with the outer gear ring. A groove that rotates with the gear is provided on the outer side wall of the shell.

[0014] By adopting the above technical solution, the motor drives the gear to rotate, the gear drives the outer ring gear to rotate, and the rotation of the outer ring gear drives the wind shield to rotate in the medium temperature zone. During the rotation of the wind shield, the degree of overlap between the vent and the outlet changes, thereby changing the flow of hot air entering the medium temperature zone. This setting realizes fine adjustment of the temperature in the medium temperature zone, thereby optimizing the growth environment of the primary phase.

[0015] Optionally, the water cooling pipe is spirally wound around the outer surface of the container.

[0016] By adopting the above technical solution, the spirally arranged water-cooling pipe effectively increases the contact area between the water-cooling pipe and the container, so that the heat released by the aluminum alloy melt is fully absorbed by the coolant, reducing the possibility of temperature fluctuations in the low-temperature zone due to heat release of the aluminum alloy, thereby further improving the uniformity of the temperature gradient temperature distribution.

[0017] Optionally, a cooling box is provided on the outer surface of the shell, and a water inlet pipe connected to the water cooling pipe is provided on the cooling box. The water inlet pipe extends to the interior of the cooling box and is connected to a water outlet pipe, and the water outlet pipe is provided with multiple water outlets. A return pipe connected to the water cooling pipe is provided at the bottom of the cooling box, and a circulating water pump is provided on the return pipe. A cooling component is provided inside the cooling box, and through grooves are provided on the opposite side walls of the cooling box. A cooling fan is provided in the through groove, and the cooling fan is used to blow air to the coolant. The cooling box is provided with a rotating component for driving the cooling fan to rotate.

[0018] By adopting the above technical solution, the coolant absorbs the heat released by the aluminum alloy melt during the flow of the water-cooling pipe, the coolant temperature increases, and the cooling effect becomes worse. At this time, the worker starts the circulating water pump, and the coolant in the water-cooling pipe enters the water outlet pipe through the water inlet pipe, and finally flows out through the water outlet. In the process of the coolant falling from the top to the bottom of the cooling box, the rotating component drives the two cooling fans to rotate. The rotation of the cooling fan accelerates the flow speed of the air around the coolant, so that the coolant can be air-cooled. The cooled coolant is pumped into the water cooling pipe again when it flows to the bottom of the cooling box. The setting of the cooling component realizes the cooling of the coolant, effectively ensuring the cooling effect of the coolant, so that the heat released by the aluminum alloy melt is fully absorbed by the coolant, reducing the possibility of temperature fluctuation caused by heat release of the aluminum alloy in the low temperature zone, thereby further improving the uniformity of the temperature gradient and temperature distribution.

[0019] Optionally, the rotating assembly includes a water wheel rotatably connected to the cooling box, the rotating shaft of the water wheel extends outside the cooling box and is fixedly connected to a first pulley, the rotating shaft of the cooling fan is fixedly connected to a second pulley, a belt is commonly provided on the outside of the first pulley and the second pulley, and the water outlet direction of the multiple water outlets is set toward the water wheel.

[0020] By adopting the above technical solution, when the coolant flows out from the water outlet and flows inside the cooling box, the coolant will impact the water wheel to rotate, and the rotation of the water wheel drives the first pulley to rotate, and the first pulley drives the second pulley to rotate, thereby rotating the cooling fan. By replacing the motor drive with a rotating component, the influence of the heat generated by the motor on the cooling of the coolant can be avoided, further improving the cooling effect of the cooling fan on the coolant.

[0021] Optionally, temperature sensors are provided in the high temperature zone, the medium temperature zone and the low temperature zone.

[0022] By adopting the above technical solution, the setting of the temperature sensor realizes real-time monitoring of the three temperature zones, so that workers can adjust the temperatures of the three temperature zones.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The present application provides a temperature gradient formed by setting a high-temperature zone, a medium-temperature zone, and a low-temperature zone. Since the temperature gradually increases from the high-temperature zone to the low-temperature zone, the primary phase is regularly distributed in the melt along the direction of decreasing temperature, thereby avoiding the random distribution of the primary phase. At the same time, the solidification rate of the melt in the low-temperature zone is relatively fast. After the primary phase nucleates in a rapid solidification environment, its growth time is limited, and the time for atomic diffusion is reduced, thereby reducing the possibility of coarsening of the primary phase grains and suppressing the coarsening of the primary phase grains. The temperature gradient from the high-temperature zone to the low-temperature zone promotes uniform nucleation of the primary phase and guides the primary phase to grow upward, while refining the primary phase grains, ultimately improving the quality of the aluminum alloy casting.

[0025] 2. This application provides a windshield. During its rotation, the overlap between the vent and the outlet changes, thereby changing the flow of hot air entering the intermediate temperature zone. This configuration allows for fine-tuning of the intermediate temperature zone temperature, thereby optimizing the growth environment for the primary phase.

[0026] 3. This application sets a cooling component, and the setting of the cooling component realizes the cooling of the coolant, effectively ensuring the cooling effect of the coolant, so that the heat released by the aluminum alloy melt is fully absorbed by the coolant, reducing the possibility of temperature fluctuations in the low-temperature zone due to heat release of the aluminum alloy, thereby further improving the uniformity of the temperature gradient temperature distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of this application.

[0028] Figure 2 It is a cross-sectional view of the shell in the embodiment of the present application.

[0029] Figure 3 It is a cross-sectional view of the first heat insulation board and the wind shield in the embodiment of the present application.

[0030] Figure 4 It is a cross-sectional view of the cooling box in the embodiment of the present application.

[0031] Explanation of the accompanying drawings: 01, shell; 02, container; 1, first heat insulation board; 2, second heat insulation board; 3, high temperature zone; 31, induction coil; 4, medium temperature zone; 41, hot air blower; 42, air supply pipe; 5, low temperature zone; 51, water cooling pipe; 6, hot air chamber; 61, air outlet; 7, ring groove; 71, wind shield; 711, vent; 72, outer ring gear; 8, motor; 81, gear; 9, groove; 10, cooling box; 101, through groove; 11, water inlet pipe; 111, circulating water pump; 12, water outlet pipe; 13, return pipe; 14, cooling assembly; 141, cooling fan; 15, rotating assembly; 151, water wheel; 152, first pulley; 153, second pulley; 154, belt. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The embodiment of the present application discloses a device for controlling the temperature gradient of an aluminum alloy melt.

[0034] Reference Figure 1 and Figure 2 A temperature gradient control device for an aluminum alloy melt includes a shell 01, a container 02 for carrying the aluminum alloy melt is fixedly installed on the bottom surface of the shell 01, and a first heat insulation board 1 and a second heat insulation board 2 are sequentially arranged on the shell 01 in a vertical direction from the top to the bottom. The first heat insulation board 1 and the second heat insulation board 2 are both fixedly sleeved on the outer surface of the shell 01, and the outer surfaces of the first heat insulation board 1 and the second heat insulation board 2 are tightly fitted with the inner wall of the shell 01.

[0035] Reference Figure 1 and Figure 2 The first heat insulation board 1 and the second heat insulation board 2 divide the interior of the shell 01 into a high-temperature zone 3, a medium-temperature zone 4 and a low-temperature zone 5. The high-temperature zone 3, the medium-temperature zone 4 and the low-temperature zone 5 are distributed in sequence along the vertical direction from the top of the shell 01 to the bottom of the shell 01. Among them, an induction coil 31 is provided in the high-temperature zone 3, and the induction coil 31 is sleeved on the outer surface of the container 02. Mounting plates (not shown in the figure) are fixedly connected to the opposite outer surfaces of the container 02. A hot air blower 41 is fixedly connected to each mounting plate. The air outlet end of the hot air blower 41 is connected to the medium-temperature zone 4. A water-cooling pipe 51 is provided in the low-temperature zone 5. The water-cooling pipe 51 is spirally wound around the outer surface of the container 02, and coolant flows in the water-cooling pipe 51.

[0036] During the solidification process of the aluminum alloy melt, the induction coil 31 generates heat through electromagnetic induction, and the melt temperature of the high temperature zone 3 increases. At the same time, the hot air blower 41 is turned on, and the hot air generated by the hot air blower 41 enters the medium temperature zone 4, providing a heat source for the medium temperature zone 4, so that the temperature of the medium temperature zone 4 is between the high temperature zone 3 and the low temperature zone 5. In the low temperature zone 5, the coolant in the water cooling pipe 51 absorbs the heat on the surface of the container 02, providing a low temperature environment for the low temperature zone 5, so that a temperature gradient is formed from the high temperature zone 3 to the low temperature zone 5 in the container 02. Since the temperature gradually decreases from the high temperature zone 3 to the low temperature zone 5, the temperature gradient increases from the high temperature zone 3 to the low temperature zone 5. The temperature of the primary phase increases, so the primary phase is regularly distributed in the melt along the direction of temperature reduction, avoiding the random distribution of the primary phase. At the same time, the solidification rate of the melt in the low temperature zone 5 is relatively fast. After the primary phase nucleates in a rapid solidification environment, the growth time is limited, and the time for atomic diffusion is reduced, thereby reducing the possibility of coarsening of the primary phase grains and inhibiting the coarsening of the primary phase grains. The temperature gradient from the high temperature zone 3 to the low temperature zone 5 promotes the uniform nucleation of the primary phase, guides the primary phase to grow upward, and refines the primary phase grains, thereby ultimately improving the quality of the aluminum alloy casting.

[0037] Reference Figure 2 and Figure 3 In order to improve the uniformity of the temperature gradient, the air outlet ends of the hot air blowers 41 are connected to the air supply pipes 42. A hot air cavity 6 is provided on the first heat insulation board 1. The air outlet ends of the air supply pipes 42 pass through the shell 01 and the side wall of the first heat insulation board 1 and are connected to the hot air cavity 6. A plurality of air outlets 61 are provided on the surface of the first heat insulation board 1 facing the medium temperature zone 4. The plurality of air outlets 61 are evenly distributed on the surface of the first heat insulation board 1, and the air outlet direction of each air outlet 61 is set toward the medium temperature zone 4.

[0038] The hot air flows into the hot air chamber 6 through the air supply pipe 42 and converges, and then flows into the medium temperature zone 4 through the hot air outlet. At this time, due to the action of gravity, the hot air has a tendency to flow vertically in the medium temperature zone 4. The hot air chamber 6 with a higher temperature is arranged close to the high temperature zone 3. The heat of the hot air gradually decreases in the process of flowing toward the low temperature zone 5, so that the temperature distribution in the medium temperature zone 4 is the same as the temperature direction of the temperature gradient, thereby further improving the uniformity of the temperature gradient temperature distribution, which is conducive to the stable growth of the primary phase and avoids uneven distribution of the primary phase or local defects due to uneven temperature.

[0039] Reference Figure 2 and Figure 3 Temperature sensors (not shown in the figure) are provided in the high-temperature zone 3, the medium-temperature zone 4 and the low-temperature zone 5. Each temperature sensor is fixedly installed on the inner wall of the container 02. The temperature sensor located in the high-temperature zone 3 is electrically connected to the induction coil 31. When the temperature of the high-temperature zone 3 changes, the temperature sensor automatically controls the current passing through the induction coil 31, thereby realizing temperature control of the high-temperature zone 3.

[0040] Reference Figure 2 and Figure 3 , the shell 01 is located in the medium temperature zone 4 and is provided with an annular groove 7 on the inner circumferential side wall, and a wind shield 71 is rotatably connected in the annular groove 7, and the wind shield 71 is sleeved on the outer surface of the container 02 and rotatably cooperates with the container 02, and the wind shield 71 is provided with ventilation holes 711 corresponding to multiple air outlets 61 one by one, and multiple ventilation holes 711 are evenly distributed on the surface of the wind shield 71 circumference. The ventilation holes 711 and the air outlets 61 are staggered, and the outer surface of the wind shield 71 is fixedly sleeved with an outer gear ring 72, and the outer gear ring 72 is rotatably connected to the inside of the annular groove 7, and the outer surface of the container 02 is fixedly connected to a support plate (not shown in the figure), and a motor 8 is fixedly connected to the support plate, and the output shaft of the motor 8 is fixedly connected to a gear 81 meshing with the outer gear ring 72. A groove 9 rotatably cooperates with the gear 81 is provided on the outer wall of the shell 01, and the temperature sensor located in the medium temperature zone 4 is electrically connected to the motor 8 through the control system.

[0041] When the temperature in the medium temperature zone 4 changes, the temperature sensor in the medium temperature zone 4 controls the motor 8 to start, the motor 8 drives the gear 81 to rotate, the gear 81 drives the outer ring gear 72 to rotate, and the rotation of the outer ring gear 72 drives the wind shield 71 to rotate in the medium temperature zone 4. During the rotation of the wind shield 71, the degree of overlap between the vent 711 and the air outlet 61 changes, thereby changing the flow rate of hot air entering the medium temperature zone 4. This setting realizes fine control of the temperature of the medium temperature zone 4.

[0042] Reference Figures 1 to 4 A cooling box 10 is provided on the outer surface of the shell 01, and a water inlet pipe 11 connected to the water cooling pipe 51 is provided on the top of the cooling box 10. The water inlet pipe 11 extends to the end portion inside the cooling box 10 and is connected to a water outlet pipe 12. The water outlet pipe 12 is provided with multiple water outlets (not shown in the figure) along the length direction, and the water outlet direction of the water outlet is set toward the inside of the cooling box 10. A return water pipe 13 connected to the water cooling pipe 51 is provided at the bottom of the cooling box 10. A circulating water pump 111 is fixedly installed on the water inlet pipe 11 to circulate the coolant in the water cooling pipe 51 and the cooling box 10. The circulating water pump 111 is electrically connected to the temperature sensor in the low temperature zone 5 through the control system.

[0043] Reference Figures 1 to 4 A cooling assembly 14 is provided in the cooling box 10. Through slots 101 are provided on the opposite inner side walls of the cooling box 10. A cooling fan 141 is fixedly connected to each through slot 101. The cooling fan 141 is used to cool the coolant in the cooling box 10. A rotating assembly 15 for driving the cooling fan 141 to rotate is provided in the cooling box 10.

[0044] The rotating assembly 15 includes a water wheel 151 arranged below multiple water outlets. The rotating shaft of the water wheel 151 is rotatably connected to the side wall of the cooling box 10. Both ends of the rotating shaft of the water wheel 151 extend out of the cooling box 10 and are fixedly connected to the first pulley 152. The rotating shaft of the fan blade extends out of the outside of the protective plate and is fixedly connected to the second pulley 153. A belt 154 is commonly provided on the outside of the first pulley 152 and the second pulley 153. The diameter of the first pulley 152 is larger than the diameter of the second pulley 153.

[0045] The coolant absorbs the heat released by the aluminum alloy melt during the flow of the water-cooling pipe 51, the coolant temperature increases, and the cooling effect becomes worse. When the temperature sensor of the low-temperature zone 5 detects that the temperature of the low-temperature zone 5 has risen, the temperature sensor controls the circulating water pump 111 to start, and the coolant in the water-cooling pipe 51 enters the water outlet pipe 12 through the water inlet pipe 11, and finally flows out through the water outlet. In the process of the coolant flowing out of the water outlet and flowing inside the cooling box 10, the coolant will impact the water wheel 151 to rotate, and the rotation of the water wheel 151 drives the first pulley 152 to rotate, and the first pulley 152 drives the second pulley The wheel 153 rotates to rotate the cooling fan 141. The rotation of the cooling fan 141 accelerates the flow rate of the air around the coolant, so that the coolant can be cooled by air. The cooled coolant is transported to the water cooling pipe 51 again through the return pipe 13 when it flows to the bottom of the cooling box 10. This arrangement realizes the cooling of the coolant and effectively ensures the cooling effect of the coolant, so that the heat released by the aluminum alloy melt is fully absorbed by the coolant, reducing the possibility of temperature fluctuation in the low-temperature zone 5 due to heat release of the aluminum alloy, thereby further improving the uniformity of the temperature gradient and temperature distribution.

[0046] The implementation principle of the temperature gradient control device of an aluminum alloy melt in the embodiment of the present application is as follows: during the solidification process of the aluminum alloy melt, the induction coil 31 generates heat through electromagnetic induction, and the melt temperature of the high temperature zone 3 increases. At the same time, the hot air blower 41 is turned on, and the hot air generated by the hot air blower 41 enters the medium temperature zone 4, providing a heat source for the medium temperature zone 4, so that the temperature of the medium temperature zone 4 is between the high temperature zone 3 and the low temperature zone 5. In the low temperature zone 5, the coolant in the water cooling pipe 51 absorbs the heat on the surface of the container 02, providing a low temperature environment for the low temperature zone 5, so that a temperature gradient from the high temperature zone 3 to the low temperature zone 5 is formed in the container 02. Due to the temperature The temperature gradually increases from the high temperature zone 3 to the low temperature zone 5, so the primary phase is regularly distributed in the melt along the direction of decreasing temperature, avoiding the random distribution of the primary phase. At the same time, the solidification rate of the melt in the low temperature zone 5 is relatively fast. After the primary phase nucleates under the rapid solidification environment, the growth time is limited, and the time for atomic diffusion is reduced, thereby reducing the possibility of coarsening of the primary phase grains and inhibiting the coarsening of the primary phase grains. The temperature gradient from the high temperature zone 3 to the low temperature zone 5 promotes the uniform nucleation of the primary phase, guides the primary phase to grow upward, and refines the primary phase grains, thereby ultimately improving the quality of the aluminum alloy casting.

[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A device for controlling the temperature gradient of an aluminum alloy melt, comprising a housing (01), wherein the housing (01) is provided with a container (02), and the container (02) is used to carry the aluminum alloy melt, characterized in that: The shell (01) is provided with a high temperature zone (3), a medium temperature zone (4) and a low temperature zone (5) in sequence along the vertical direction; an induction coil (31) is provided in the high temperature zone (3); the induction coil (31) is wound around the outer surface of the container (02); a hot air blower (41) is provided on the outer surface of the container (02); the air outlet end of the hot air blower (41) is connected to the medium temperature zone (4); a water cooling pipe (51) is provided in the low temperature zone (5); the water cooling pipe (51) is sleeved on the outer surface of the container (02); a coolant flows in the water cooling pipe (51).

2. The device for controlling the temperature gradient of an aluminum alloy melt according to claim 1, wherein: A first heat insulation board (1) and a second heat insulation board (2) are provided in the shell (01); the first heat insulation board (1) and the second heat insulation board (2) are both sleeved on the outer surface of the shell (01); the outer surfaces of the first heat insulation board (1) and the second heat insulation board (2) are both in close contact with the inner wall of the shell (01); the first heat insulation board (1) is located between the high temperature zone (3) and the medium temperature zone (4); and the second heat insulation board (2) is located between the medium temperature zone (4) and the low temperature zone (5).

3. The device for controlling the temperature gradient of an aluminum alloy melt according to claim 2, wherein: The air outlet end of the hot air blower (41) is connected to an air supply pipe (42), a hot air cavity (6) is provided in the first heat insulation board (1), the air outlet end of the air supply pipe (42) is connected to the hot air cavity (6), and a plurality of air outlets (61) are provided on the surface of the first heat insulation board (1) facing the medium temperature zone (4), and the air outlet direction of the air outlets (61) is set toward the medium temperature zone (4).

4. The device for controlling the temperature gradient of an aluminum alloy melt according to claim 3, wherein: The inner wall of the shell (01) is provided with an annular groove (7), and a windshield (71) is rotatably arranged in the annular groove (7). The windshield (71) is sleeved on the outer surface of the container (02), and the windshield (71) is tightly fitted with the surface of the first heat insulation plate (1) facing the medium temperature zone (4). The windshield (71) is provided with ventilation holes (711) corresponding to the plurality of air outlets (61) one by one, and the ventilation holes (711) and the air outlets (61) are staggered. The outer surface of the windshield (71) is sleeved with an outer gear ring (72), and the outer gear ring (72) is rotatably arranged inside the annular groove (7). The outer surface of the shell (01) is provided with a motor (8), and the output shaft of the motor (8) is provided with a gear (81) meshing with the outer gear ring (72). The outer wall of the shell (01) is provided with a groove (9) rotatably matched with the gear (81).

5. The device for controlling the temperature gradient of an aluminum alloy melt according to claim 1, wherein: The water cooling pipe (51) is spirally wound around the outer surface of the container (02).

6. The device for controlling the temperature gradient of an aluminum alloy melt according to claim 1, wherein: A cooling box (10) is provided on the outer surface of the shell (01), and a water inlet pipe (11) connected to the water cooling pipe (51) is provided on the cooling box (10), and the water inlet pipe (11) extends to the interior of the cooling box (10) and is connected to a water outlet pipe (12), and the water outlet pipe (12) is provided with multiple water outlets. A return pipe (13) connected to the water cooling pipe (51) is provided at the bottom of the cooling box (10), and a circulating water pump (111) is provided on the water inlet pipe (11). A cooling component (14) is provided inside the cooling box (10), and through grooves (101) are provided on the opposite side walls of the cooling box (10), and a cooling fan (141) is provided in the through groove (101). The cooling fan (141) is used to blow air to the coolant, and a rotating component (15) for driving the cooling fan (141) to rotate is provided on the cooling box (10).

7. The device for controlling the temperature gradient of an aluminum alloy melt according to claim 6, wherein: The rotating assembly (15) includes a water wheel (151) rotatably connected to the cooling box (10), the rotating shaft of the water wheel (151) extends outside the cooling box (10) and is fixedly connected to a first pulley (152), the rotating shaft of the cooling fan (141) is fixedly connected to a second pulley (153), the first pulley (152) and the second pulley (153) are both covered with a belt (154), and the water outlet directions of the multiple water outlets are arranged toward the water wheel (151).

8. The device for controlling the temperature gradient of an aluminum alloy melt according to claim 1, wherein: Temperature sensors are provided in the high temperature zone (3), the medium temperature zone (4) and the low temperature zone (5).

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