Molten aluminum transfer ladle

Abstract

The invention relates to the field of aluminum alloy casting, in particular to a molten aluminum transfer ladle which comprises a furnace body and a molten aluminum pouring nozzle, the furnace body is in the shape of a cylinder with the top open, the cylindrical furnace shell extends outwards on the outer wall to form the molten aluminum pouring nozzle, the molten aluminum pouring nozzle is obliquely and upwards arranged, and the molten aluminum pouring nozzle is provided with a feeding port and a discharging port. The feeding port is communicated with the interior of the furnace shell, the feeding port is gradually reduced in the pouring direction of the molten aluminum pouring nozzle to form a discharging port, the discharging port is higher than the top of the furnace body, the ratio of the height of the feeding port in the axial direction of the furnace body to the depth of the interior of the furnace body is 0.55, and the ratio of the diameter of the interior of the cylindrical furnace body to the depth of the interior of the furnace body is 1.1; the heat preservation performance can be effectively improved to maintain the stable temperature of molten aluminum, the molten aluminum is prevented from leaking, the ladle body is prevented from being damaged and scrapped, the molten aluminum can be rapidly poured out, the temperature of the molten aluminum and the ladle body is monitored in real time, technological parameters can be conveniently adjusted in time, casting defects are reduced, and production safety and stability are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of aluminum alloy casting, and more specifically to a transfer container for molten aluminum. Background Technology

[0002] With the continuous introduction of national policies on energy conservation, emission reduction and consumption reduction, lightweighting of automobiles has become a trend. More and more mid-to-high-end cars are beginning to use aluminum alloy structural parts. At present, low-pressure casting is the most commonly used casting method for aluminum alloy structural parts in automobiles. In the production process, molten aluminum liquid needs to be put from the melting furnace into the transfer ladle, and then the molten aluminum alloy liquid is transferred to the holding furnace matched with each casting equipment through the transfer ladle. Since it takes a period of time from the aluminum being put into the melting furnace to the holding furnace of the low-pressure casting machine, the aluminum liquid cools down during this process, which affects the castability of the product. Therefore, the heat preservation of the transfer ladle is very important.

[0003] Existing transfer ladles often employ multi-layer insulation structures to reduce heat loss and maintain a stable temperature for the molten aluminum. However, the high temperature of the molten aluminum can easily cause the transfer ladle to deform due to high temperatures and crack due to thermal expansion and contraction, leading to molten aluminum leakage. This not only causes production interruptions but may also result in safety accidents such as burns to personnel. Molten aluminum and impurities corrode the ladle body and penetrate into the outer steel plate, causing the transfer ladle to break and become unusable. They may also contaminate the molten aluminum, affecting the performance of subsequent castings. Furthermore, the dimensions of most transfer ladles and the setting of the discharge nozzles on them prevent the molten aluminum from being poured out quickly due to the limited pouring height and tilt angle. During use, it is also impossible to monitor the temperature of the molten aluminum or the ladle body in real time, making it difficult to adjust process parameters in a timely manner. This can easily lead to casting defects due to abnormal temperatures, exacerbating production uncertainties.

[0004] Therefore, there is an urgent need for a transfer ladle that can effectively improve the heat preservation performance to maintain a stable temperature of molten aluminum, while also having good high-temperature resistance to deformation, cracking and corrosion, preventing molten aluminum leakage and ladle damage and scrap, optimizing the pouring structure design to achieve rapid pouring of molten aluminum, and enabling real-time monitoring of the temperature of molten aluminum and ladle, facilitating timely adjustment of process parameters, reducing casting defects, and ensuring production safety and stability. Summary of the Invention

[0005] The present invention aims to provide an aluminum molten transfer ladle that can effectively improve the heat preservation performance to maintain a stable temperature of the aluminum molten metal, while also possessing good high-temperature resistance to deformation, cracking and corrosion, avoiding aluminum molten metal leakage and ladle damage and scrap, optimizing the pouring structure design to achieve rapid pouring of aluminum molten metal, and enabling real-time monitoring of the temperature of aluminum molten metal and ladle body, facilitating timely adjustment of process parameters, reducing casting defects, and ensuring production safety and stability.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an aluminum molten metal transfer container, comprising a furnace body and an aluminum molten metal pouring spout. The furnace body is a cylindrical shape with an open top. The cylindrical furnace shell extends outward on the outer wall to form the aluminum molten metal pouring spout. The aluminum molten metal pouring spout is inclined upward and has an inlet port and an outlet port. The inlet port is connected to the interior of the furnace shell. The inlet port gradually narrows along the pouring direction of the aluminum molten metal pouring spout to form the outlet port. The outlet port is higher than the top of the furnace body. The ratio of the height of the inlet port along the axial direction of the furnace body to the depth of the furnace body is 0.55. The ratio of the diameter of the cylindrical furnace body to the depth of the furnace body is 1.1.

[0007] The beneficial effects of this solution are as follows: By optimizing the size ratio and structural design of the furnace body and the aluminum liquid pouring nozzle, rapid aluminum liquid pouring is achieved, improving transfer efficiency; the multi-layer composite insulation structure enhances insulation performance and maintains a stable temperature for the aluminum liquid; the synergistic effect of the multi-layer structure improves the high-temperature resistance to deformation, cracking, and corrosion of the transfer ladle, preventing aluminum liquid leakage and ladle scrapping; the temperature sensor enables real-time temperature monitoring, facilitating timely adjustment of process parameters and reducing casting defects; the design of the handling base facilitates the handling of the transfer ladle, and the hollow opening reduces the overall weight and improves ease of use. The furnace body's internal diameter to depth ratio of 1.1 is designed to minimize the contact surface area between the molten aluminum and the air while ensuring the capacity. According to the principles of heat convection and radiation transfer, the smaller the surface area, the less heat is lost per unit time, thereby reducing the heat dissipation rate of the molten aluminum during static storage.

[0008] Furthermore, the first angle between the inclined surface at the top of the aluminum molten pouring nozzle and the top of the furnace body is 160° to 165°, and the second angle between the inclined surface at the bottom of the aluminum molten pouring nozzle and the axial direction of the furnace body is 50° to 60°.

[0009] The beneficial effects are as follows: improved adaptability of the pouring height; the design of the discharge port being higher than the top of the furnace body can accurately match the feeding height requirements of the subsequent holding furnace, avoiding problems such as aluminum molten metal splashing or failure to enter the furnace smoothly during the pouring process; significantly shortened pouring time; the coordinated flow guiding system formed by various dimensions and angle parameters conforms to the fluid dynamics flow law; the gradually tapering ratio of the width of the feeding port and the discharge port can form a stable acceleration gradient in the flow of aluminum molten metal, avoiding eddy current loss caused by abrupt changes in cross-section, and ensuring that kinetic energy is efficiently converted into flow velocity; the spacing between the discharge ports accurately matches the aluminum molten metal flow rate requirements, forming the optimal flow cross-sectional area, which avoids the increased flow resistance caused by too small a spacing, and also prevents the flow velocity dispersion caused by too large a spacing; The first and second tilt angles balance the component of gravity of the molten aluminum along the pouring direction with the flow resistance. The component of gravity can effectively drive the flow of molten aluminum, while preventing excessive flow velocity and splashing caused by excessive force. This makes the flow speed of molten aluminum uniform and efficient, shortens the pouring time, and greatly improves the overall transfer efficiency.

[0010] Furthermore, the distance between the inclined surface at the top of the aluminum liquid pouring nozzle and the inclined surface at the bottom of the aluminum liquid pouring nozzle at the discharge port is 160mm to 165mm.

[0011] Furthermore, the ratio of the width of the discharge port along the radial direction of the furnace body to the width of the feed port along the radial direction of the furnace body is 1:2; the gradual contraction structure of the aluminum liquid pouring nozzle shortens the residence time of the aluminum liquid during the pouring process, reduces the contact time and contact area between the aluminum liquid and the inner wall of the pouring nozzle, and reduces the heat loss through heat conduction.

[0012] Furthermore, the furnace body is provided with castable material, nanofiber board, fiber paper and steel plate from the inside out. The thickness of the nanofiber board is 20mm to 30mm, the thickness of the fiber paper is 5mm, and the thickness of the steel plate is 6mm.

[0013] Furthermore, the side wall of the furnace body has mounting holes in the middle that penetrate the nanofiber board and the fiber paper, and temperature sensors for detecting the temperature of the furnace body are installed in the mounting holes.

[0014] Furthermore, the bottom of the furnace body is equipped with a transport base, which has a perforated opening.

[0015] Furthermore, the top of the aluminum liquid pouring nozzle is provided with a rotating cover plate. The rotating cover plate has rotating pins installed on the inner wall of the aluminum liquid pouring nozzle on both sides near the feed port. The rotating cover plate has positioning posts on both sides near the discharge port. The inner wall of the aluminum liquid pouring nozzle is provided with an arc-shaped guide groove that allows the positioning posts to extend into it. The diameter of the discharge port can be adjusted by rotating the rotating cover plate around the rotating pins. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the present invention; Figure 2 This is a top view of the present invention; Figure 3 for Figure 1 An enlarged schematic diagram of part A in the middle.

[0017] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: furnace body 1, aluminum liquid pouring nozzle 2, feed port 3, discharge port 4, casting material 5, nanofiber board 6, fiber paper 7, steel plate 8, mounting hole 9, temperature sensor 10, handling base 11, hollow opening 12, rotating cover plate 13, rotating pin 14, arc-shaped guide groove 15, positioning column 16. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Example 1 The basic implementation examples are as follows: Figure 1-3 As shown in the attached document Figure 1 and attached Figure 2The diagram shows an aluminum molten metal transfer container, comprising a furnace body 1 and an aluminum molten metal pouring spout 2. The furnace body 1 is a cylindrical shape with an open top. Compared to other shapes (such as cuboids or cones), the cylindrical furnace body 1 exhibits more even stress distribution on its side walls when accommodating the same volume of aluminum molten metal, effectively dispersing the thermal stress caused by the high-temperature aluminum molten metal and reducing the risk of high-temperature deformation and cracking. The open top design facilitates the loading of aluminum molten metal from the smelting furnace, while the aluminum molten metal pouring spout 2 ensures smooth pouring out of the molten metal. The cylindrical furnace shell has a cylindrical outer wall... An aluminum molten metal pouring nozzle 2 extends outward from the top and is tilted upward. This upward tilt allows the molten aluminum to form a stable flow trajectory during pouring, preventing splashing due to improper pouring angle. It also increases the pouring height to meet the feeding height requirements of the subsequent holding furnace. The aluminum molten metal pouring nozzle 2 has an inlet port 3 and an outlet port 4. The inlet port 3 connects to the interior of the furnace shell and gradually narrows along the pouring direction of the nozzle to form an outlet port. Port 4 serves two purposes: firstly, it acts as a guide, accelerating the flow of molten aluminum, shortening its residence time in the pouring nozzle, reducing the contact time and area between the molten aluminum and the inner wall of the nozzle, and decreasing heat loss through heat conduction, thus improving overall insulation; secondly, it enables rapid pouring of molten aluminum, improving transfer efficiency, while reducing molten aluminum residue in the pouring nozzle and lowering the risk of impurity accumulation. Since the discharge port 4 is higher than the top of the furnace body 1, it ensures that the molten aluminum in the furnace body 1 can be completely poured out under its own gravity, avoiding the possibility of some molten aluminum remaining in the furnace body 1 due to insufficient height of the discharge port 4, reducing material waste and the hassle of cleaning residual molten aluminum after cooling. The ratio of the height of the feed port 3 along the axial direction of the furnace body 1 to the depth of the furnace body 1 is 0.55. If the ratio is too large, the height of the feed port 3 will be too high, limiting the amount of molten aluminum that can be loaded into the furnace body 1, reducing the single transfer volume; if the ratio is too small, the height of the feed port 3 will be too low, making it easy for molten aluminum to overflow and splash during pouring, posing a safety hazard.

[0021] The ratio of the internal diameter to the internal depth of the cylindrical furnace body 1 is 1.1. This ratio balances the furnace body's capacity and structural stability while optimizing insulation from a heat transfer control perspective. If the ratio is too large, the furnace body 1 will be too short and wide, resulting in an excessively large surface area for the molten aluminum, which will accelerate heat dissipation and hinder insulation. If the ratio is too small, the furnace body 1 will be too tall and narrow, increasing thermal stress on the side walls, reducing structural stability, and making it difficult to load and unload the molten aluminum. At this ratio, the contact surface area between the molten aluminum and air is minimized while ensuring sufficient capacity. According to the principles of heat convection and radiation, a smaller surface area results in less heat loss per unit time, thus reducing the heat dissipation rate of the molten aluminum during static storage, balancing insulation performance and ease of use.

[0022] In this embodiment, the first inclined angle formed between the inclined surface at the top of the aluminum liquid pouring nozzle 2 and the top of the furnace body 1 is 160° to 165°; the first inclined angle is attached. Figure 1 The angle α shown, the first inclined angle, allows the top of the aluminum pouring nozzle 2 to form a reasonable guiding slope, preventing the aluminum liquid from overflowing from the top of the nozzle during pouring. If the angle is too large (close to 180°), the slope at the top of the nozzle will be too gentle, failing to form an effective guide, and the aluminum liquid will easily overflow. If the angle is too small (less than 160°), the slope will be too steep, increasing the flow resistance of the aluminum liquid and affecting the pouring speed. Within this angle range, stable guidance of the aluminum liquid can be achieved, preventing overflow while ensuring pouring efficiency.

[0023] The second inclination angle formed by the inclined surface at the bottom of the aluminum liquid pouring nozzle 2 and the axial direction of the furnace body 1 is 50° to 60°; the second inclination angle is attached. Figure 1 As shown in the diagram, from a flow rate optimization perspective, the second tilt angle allows for the optimal balance between the component of gravity of the molten aluminum along the pouring direction and the flow resistance. The gravity component effectively drives the flow of the molten aluminum without causing excessive splashing due to excessive flow rate. From a heat preservation perspective, a reasonable flow rate prevents the molten aluminum from staying in the pouring nozzle for too long, reducing heat dissipation. If the angle is too large (greater than 60°), the slope at the bottom of the pouring nozzle becomes too steep, resulting in excessively fast flow of the molten aluminum, which easily leads to splashing and exacerbates erosion at the bottom of the pouring nozzle. If the angle is too small (less than 50°), the slope becomes too gentle, resulting in excessively slow flow of the molten aluminum, reducing transfer efficiency. Furthermore, the prolonged residence time of the molten aluminum in the pouring nozzle increases heat dissipation, affecting the temperature stability of the molten aluminum. Within this angle range, the molten aluminum can be ensured to flow at a stable speed, balancing transfer efficiency, flow stability, and the service life of the pouring nozzle, while also helping to maintain a stable temperature of the molten aluminum.

[0024] In this embodiment, the distance between the inclined surface at the top of the aluminum liquid pouring nozzle 2 and the inclined surface at the bottom of the aluminum liquid pouring nozzle 2 at the discharge port 4 is 160mm to 165mm. The distance directly determines the flow cross-sectional area of ​​the discharge port 4, thus affecting the aluminum liquid pouring speed, flow stability, and heat preservation effect. From the perspective of flow rate optimization, this not only avoids the increased flow resistance caused by too small a distance, preventing the flow rate from being too slow and prolonging the pouring time and increasing heat dissipation, but also prevents the flow rate dispersion caused by too large a distance, avoiding splashing caused by too fast a flow rate. From the perspective of usage stability, this distance can ensure the rapid pouring of aluminum liquid while avoiding splashing and impurity accumulation. If the distance is too large (greater than 165mm), the flow cross-sectional area is too large, the aluminum liquid pouring speed is too fast, which is prone to splashing and will increase the overall volume and weight of the pouring nozzle, which is not conducive to transfer. If the distance is too small (less than 160mm), the flow cross-sectional area is too small, the aluminum liquid pouring speed is too slow, reducing transfer efficiency and easily causing impurities to accumulate at the discharge port 4, causing blockage, while prolonging the pouring time and aggravating heat dissipation.

[0025] In this embodiment, the ratio of the width of the discharge port 4 along the radial direction of the furnace body 1 to the width of the feed port 3 along the radial direction of the furnace body 1 is 1:2. The reason for this width ratio is that the gradual contraction ratio of 1:2 can form a smooth flow channel, which conforms to the fluid dynamics flow law and achieves synergistic optimization of flow rate and heat preservation. The larger width of the feed port 3 can ensure that the aluminum liquid in the furnace body 1 can enter the pouring nozzle quickly and smoothly, avoiding uneven flow rate and increased heat dissipation caused by feed congestion. The width of the discharge port 4 is 1 / 2 of that of the feed port 3, which can make the aluminum liquid form a smooth acceleration gradient during the flow process, avoiding eddy current loss caused by abrupt changes in cross-section, ensuring that kinetic energy is efficiently converted into flow velocity. This achieves a reasonable increase in the flow velocity of the aluminum liquid, shortens the pouring time and reduces heat dissipation, and avoids splashing caused by excessive speed. It can make the aluminum liquid form a smooth accelerated flow from the feed port 3 to the discharge port 4, taking into account both feeding efficiency and discharge stability, improving the overall pouring efficiency, and helping to maintain the stability of the aluminum liquid temperature.

[0026] In this embodiment, the furnace body 1 is provided with, from the inside out, a castable refractory 5, a nanofiber board 6, a fiber paper 7, and a steel plate 8. The thickness of the nanofiber board 6 is 20mm to 30mm, the thickness of the fiber paper 7 is 5mm, and the thickness of the steel plate 8 is 6mm; as shown in the attached figure. Figure 3As shown, the innermost castable refractory 5 is in direct contact with the high-temperature molten aluminum. In a preferred embodiment, the castable refractory 5 is a high-temperature resistant and corrosion-resistant non-stick aluminum castable 5Rf-83H, which can effectively resist the corrosion of high-temperature molten aluminum and impurities, prevent aluminum penetration, protect the inner structure, and extend the service life of the furnace body 1. The nanofiber board 6 adjacent to the castable refractory 5 is the core insulation layer. The nanofiber board 6 has an extremely low thermal conductivity. In a preferred embodiment, the thermal conductivity is 0.028, which has excellent insulation performance and can effectively reduce the heat loss of molten aluminum and maintain a stable temperature of molten aluminum. The thickness of the nanofiber board 6 is set to 20mm to 30mm. In a preferred embodiment, the thickness of the nanofiber board 6 is 25mm. This ensures good insulation while avoiding excessive weight of the furnace body 1 due to excessive thickness. If the thickness is too small, the insulation effect will be insufficient, and the aluminum... The liquid cools down too quickly; if the thickness is too large, the improvement in heat preservation effect is not obvious, but it will significantly increase the weight of the furnace body 1 and the manufacturing cost; the fiber paper 7 on the outside of the nanofiber board 6 is an auxiliary heat preservation layer with a thickness of 5mm. The fiber paper 7 has good flexibility and sealing properties, which can fill the gap between the nanofiber board 6 and the steel plate 8, reduce heat conduction and heat convection at the gap, and further improve the heat preservation effect. At the same time, it can buffer the vibration between the nanofiber board 6 and the steel plate 8 and protect the structural integrity of the nanofiber board 6; the outermost steel plate 8 is a structural support layer with a thickness of 6mm. The steel plate 8 has excellent structural strength and rigidity, which can provide stable support for the inner heat preservation and anti-corrosion structure, resist external impact, and prevent the inner structure from deforming due to thermal expansion and contraction. The 6mm thickness can control the overall weight of the furnace body 1 while ensuring the support strength, and improve the ease of use.

[0027] In this embodiment, the side wall of the furnace body 1 has an installation hole 9 in the middle that penetrates the nanofiber board 6 and the fiber paper 7. A temperature sensor 10 for detecting the temperature of the furnace body 1 is installed in the installation hole 9. The middle part of the side wall of the furnace body 1 is the intermediate area between the temperature of the molten aluminum and the wall temperature of the furnace body 1. It can accurately reflect the actual temperature state of the molten aluminum and avoid excessive temperature detection deviation due to the installation position being too shallow (close to the top of the furnace body 1) or the sensor being easily damaged by excessive pressure from the molten aluminum due to the installation position being too deep (close to the bottom of the furnace body 1). The installation hole 9 penetrates the nanofiber board 6 and the fiber paper 7, but does not penetrate the innermost layer of casting material 5, which can prevent the molten aluminum from leaking from the installation hole 9. The operator can keep track of the temperature change of the molten aluminum in time through the data fed back by the temperature sensor 10. If the temperature is too low, heating measures can be taken in time. If the temperature is too high, the transfer rhythm can be adjusted to avoid casting defects caused by abnormal temperature, reduce production uncertainty, and ensure production stability.

[0028] In this embodiment, the bottom of the furnace body 1 is provided with a transport base 11, and the transport base 11 is provided with a hollow opening 12. The transfer package needs to be frequently moved during use. The transport base 11 can provide stable support for the furnace body 1, avoid the bottom of the furnace body 1 from directly contacting the ground and causing wear or damage, and at the same time facilitate the grabbing and moving of the transfer package by forklifts, overhead cranes and other transport equipment. The hollow opening 12 on the transport base 11 reduces the overall weight of the transfer package and the load on the transport equipment while ensuring the support strength of the transport base 11. At the same time, it also provides convenience for the transport equipment such as forklifts and overhead cranes.

[0029] Example 2 The top of the aluminum liquid pouring nozzle 2 is provided with a rotating cover plate 13. Rotating pins 14, mounted on the inner wall of the aluminum liquid pouring nozzle 2, are respectively provided on both sides of the rotating cover plate 13 near the feed port 3. Positioning posts 16 are respectively provided on both sides of the rotating cover plate 13 near the discharge port 4. An arc-shaped guide groove 15 is provided on the inner wall of the aluminum liquid pouring nozzle 2, allowing the positioning posts 16 to extend into it. The rotating cover plate 13 can be driven to rotate around the rotating pins 14 to adjust the diameter of the discharge port 4. In a preferred embodiment, the positioning posts 16... The diameter is slightly larger than the width of the arc-shaped guide groove 15. The positioning post 16 can slide along the arc-shaped guide groove 15. After the sliding stops, the friction generated between the positioning post 16 and the groove wall of the arc-shaped guide groove 15 keeps the positioning post 16 stationary. The groove wall of the arc-shaped guide groove 15 can be made of elastic material (such as thin metal or rubber coating). After the positioning post 16 is forcibly pressed in, the groove wall of the arc-shaped guide groove 15 undergoes elastic deformation, generating a continuous normal pressure (i.e., friction) to overcome the external force that causes the positioning post 16 to slide and keep it stationary.

[0030] The aluminum molten pouring nozzle 2 is equipped with a rotating cover plate 13. The rotating cover plate 13 can be driven to adjust the diameter of the discharge port 4. In the actual aluminum molten transfer process, since the amount of aluminum molten required for casting different aluminum alloy structural parts is different, the height of aluminum molten inside the furnace body 1 is also different, so the tilt angle required for the aluminum molten to enter the feed port 3 during the pouring process of the furnace body 1 is different. When the aluminum liquid volume is low, a larger tilt angle is required. At this time, the flow rate of the aluminum liquid from the feed port 3 to the discharge port 4 is faster. Therefore, the diameter of the discharge port 4 is increased by rotating the cover plate 13, thereby reducing the flow rate at the discharge port 4. This prevents the aluminum liquid from splashing due to excessively fast flow rate in the aluminum liquid pouring nozzle 2 at an excessively high tilt angle, which would affect the safety of on-site operations. When the aluminum liquid volume is low, a smaller tilt angle is required. At this time, the flow rate of the aluminum liquid from the feed port 3 to the discharge port 4 is slower. Therefore, the diameter of the discharge port 4 is decreased by rotating the cover plate 13, thereby increasing the flow rate at the discharge port 4. This prevents the aluminum liquid from flowing too slowly in the aluminum liquid pouring nozzle 2 at an excessively low tilt angle, which would cause the aluminum liquid to remain on the aluminum liquid pouring nozzle 2 for too long, resulting in excessive heat loss and affecting the casting quality of subsequent aluminum alloy structural parts.

[0031] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A transfer ladle for molten aluminium characterised in that: The furnace includes a furnace body and an aluminum molten metal pouring spout. The furnace body is a cylindrical shape with an open top. The cylindrical furnace shell extends outward on the outer wall to form the aluminum molten metal pouring spout, which is tilted upward. The aluminum molten metal pouring spout has a feed port and a discharge port. The feed port is connected to the inside of the furnace shell. The feed port gradually narrows along the pouring direction of the aluminum molten metal pouring spout to form the discharge port. The discharge port is higher than the top of the furnace body. The ratio of the height of the feed port along the axial direction of the furnace body to the depth of the furnace body is 0.

55. The ratio of the diameter of the cylindrical furnace body to the depth of the furnace body is 1.

1.

2. A transfer ladle as claimed in claim 1, characterised in that: The first angle between the inclined surface at the top of the aluminum molten pouring nozzle and the top of the furnace body is 160° to 165°, and the second angle between the inclined surface at the bottom of the aluminum molten pouring nozzle and the axial direction of the furnace body is 50° to 60°.

3. A transfer ladle as claimed in claim 2, wherein: The distance between the inclined surface at the top of the aluminum liquid pouring nozzle and the inclined surface at the bottom of the aluminum liquid pouring nozzle at the discharge port is 160mm to 165mm.

4. A transfer ladle as claimed in claim 3, characterised in that: The ratio of the width of the discharge port along the radial direction of the furnace body to the width of the feed port along the radial direction of the furnace body is 1:

2.

5. A transfer ladle as claimed in claim 1, characterised in that: The furnace body is constructed from the inside out with a castable refractory, a nanofiber board, a fiber paper, and a steel plate. The nanofiber board is 20mm to 30mm thick, the fiber paper is 5mm thick, and the steel plate is 6mm thick.

6. A transfer ladle as claimed in claim 5 wherein: The side wall of the furnace body has mounting holes in the middle that penetrate the steel plate, nanofiber board and fiber paper, and temperature sensors for detecting the temperature of the furnace body are installed in the mounting holes.

7. A transfer ladle as claimed in claim 1, wherein: The bottom of the furnace body is equipped with a transport base, which has a perforated opening.

8. The aluminum molten metal transshipment method according to claim 1, characterized in that: The top of the aluminum liquid pouring nozzle is equipped with a rotating cover plate. On both sides of the rotating cover plate near the feed port, there are rotating pins installed on the inner wall of the aluminum liquid pouring nozzle. On both sides of the rotating cover plate near the discharge port, there are positioning posts. The inner wall of the aluminum liquid pouring nozzle is equipped with an arc-shaped guide groove that allows the positioning posts to extend into. The diameter of the discharge port can be adjusted by rotating the rotating cover plate around the rotating pins.

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