Casting disc heating device

Abstract

The utility model discloses a casting disc heating device, which relates to the technical field of molten metal casting processing and comprises a square heating base, concave mounting vertical plates are symmetrically arranged on two sides of a hollow structure in the square heating base, and a plurality of silicon carbide rod heating components which are linearly arranged are arranged on one sides of the concave mounting vertical plates in a penetrating manner. A horizontal supporting plate is arranged at the bottom end of the other side of the concave mounting vertical plate, a plurality of clamping assemblies matched with the silicon carbide rod heating assemblies are arranged at the top end of the horizontal supporting plate, and silicon felt cotton is arranged in the middle of the top end and the middle of the bottom end of each silicon carbide rod heating assembly; a plurality of wire outlets are formed in the two sides of the square heating base, and a disc body mounting frame is arranged at the top end of the square heating base. The casting disc is scientific and novel in structure, the silicon carbide rod design with the diameter gradually reduced from large to small in the direction from the outlet launder clamping hole to the inlet launder clamping hole is adopted, and the problem that the temperature of molten aluminum at the end, close to the aluminum discharging launder, of the casting disc is reduced can be effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of molten metal casting and processing technology, and more specifically, to a casting pan heating device. Background Technology

[0002] With the continuous advancement of industrialization, aluminum and aluminum alloys are playing an increasingly important role in aerospace, automobile manufacturing, and construction engineering due to their excellent performance and broad application prospects. Among them, aluminum rods, as an important type of aluminum processed product, directly affect the performance and reliability of downstream products. The production of aluminum rods mainly adopts the deep-well casting process, which solidifies molten aluminum under controlled conditions and is currently the most mature and widely used method for producing aluminum rods. The core of the deep-well casting process lies in the coordinated operation of temperature control and cooling systems, with the temperature control of the casting pan being particularly critical, directly affecting the metallographic structure, mechanical properties, and surface quality of the product.

[0003] Currently, the deep-well casting process for aluminum rods mainly involves pouring molten aluminum at approximately 720°C through a casting pan system. Under the action of the mold, shaping graphite rings, and the casting machine's traction system and dummy head moving downwards, while simultaneously being cooled by water spray, the aluminum melt ultimately crystallizes and solidifies. To ensure casting quality, the casting pan needs to be preheated. Preheating the casting pan aims to prevent rapid cooling caused by direct contact between the molten aluminum and the cold mold, and also reduces temperature fluctuations during casting, which is beneficial for obtaining a uniform solidification structure. Traditional preheating methods mainly employ natural gas heating or electric blower heating, and these methods have become relatively mature processes in practical applications.

[0004] For example, Chinese patent CN214720506U discloses an aluminum molten metal holding furnace for casting, including a shell, a heating device inside the shell, a feed inlet at the top of the shell, aluminum molten metal inlets and a feeding inlet on both sides of the feed inlet, and an aluminum molten metal outlet at the lower end of the side wall of the shell. It has good heat preservation, low heat loss, and high working efficiency. However, the above-mentioned aluminum molten metal holding furnace has the following shortcomings: the device only solves the problem of heat preservation of the aluminum molten metal, but cannot achieve uniform heating of the casting pan, resulting in very uneven preheating. The refractory material is prone to cracking due to uneven heating, leading to a shortened lifespan. Secondly, the device cannot continue to preheat the casting pan after casting. During the casting process, the water temperature at the cold end of the casting pan is usually 5-10℃ lower than that at the hot end, resulting in unstable quality of the bars at the cold end of the casting pan and poor practicality.

[0005] There are currently no effective solutions to the problems in the relevant technologies. Utility Model Content

[0006] In view of the problems in the related technologies, this utility model proposes a casting plate heating device to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] Therefore, the specific technical solution adopted by this utility model is as follows:

[0008] A casting plate heating device includes a square heating base with a hollow inner side. Concave mounting plates are symmetrically arranged on both sides of the hollow structure. A plurality of linearly arranged silicon carbide heating rods are threaded through one side of each concave mounting plate. A horizontal support plate is located at the bottom of the other side of the concave mounting plate. A plurality of clamping components that cooperate with the silicon carbide heating rods are located at the top of the horizontal support plate. Silicone felt is provided at the middle of both the top and bottom of each silicon carbide heating rod. A plurality of cable outlets are provided on both sides of the square heating base. A plate mounting frame is located at the top of the square heating base. An inlet flow channel opening is located at one end of the plate mounting frame, and an outlet flow channel opening is located at the other end. Plate support plates are located on both sides of the bottom of the plate mounting frame.

[0009] Furthermore, in order to effectively compensate for the temperature loss of molten aluminum during the flow process, ensure the uniformity of the molten aluminum temperature throughout the casting pan, and improve casting quality, the silicon carbide heating assembly includes a silicon carbide rod penetrating one side of the concave mounting plate. The two ends of the silicon carbide rod are symmetrically equipped with heating connectors that mate with the concave mounting plate, and the diameter of the silicon carbide rod gradually decreases along the direction from the outlet flow channel clamping hole to the inlet flow channel clamping hole. The heating connector includes a corrugated tube sleeved on the outside of the silicon carbide rod. One end of the corrugated tube has a snap-fit ​​sleeve that connects to the concave mounting plate. One end of the snap-fit ​​sleeve has an insulating collar. The middle of the snap-fit ​​sleeve has an O-ring seal that mates with the concave mounting plate. The other end of the snap-fit ​​sleeve has a conductive insulating tube inside. One end of the conductive insulating tube has a conductive center piece that mates with the silicon carbide rod. One end of the conductive center piece has an L-shaped conductive copper sheet penetrating through its center.

[0010] Furthermore, in order to achieve stable clamping of the silicon carbide heating element through the hinge of the limiting pin and the cooperation of the spring and the pressure block, the clamping assembly includes a clamping seat set at the top of the horizontal support plate. Springs are provided on both sides of the top of the clamping seat, and arc-shaped parts are provided on both sides of the middle of the top of the clamping seat. A limiting pin is provided through one end of the arc-shaped part, and a first clamping arm is provided on the outer side of the middle of the limiting pin.

[0011] Furthermore, a first pressure block is provided on one side of the first clamping arm, a second clamping arm that cooperates with the limiting pin is provided through the middle of one end of the first clamping arm, a second pressure block is provided on one side of the second clamping arm, and a telescopic rod that cooperates with the spring is provided at the bottom end of both the first pressure block and the second pressure block.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This utility model has a scientific and novel structure. By installing a set of silicon carbide rods with diameters ranging from large to small at the bottom of the casting plate body as heating elements, and using a design of laying silicon felt cotton on the top and bottom, combined with the concave mounting plate, silicon carbide rod heating assembly and clamping assembly set in the square heating base, the preheating and continuous heating functions of the casting plate are realized. At the same time, the cooperation of the plate mounting frame and the plate support plate ensures the structural stability of the entire device in the high-temperature working environment.

[0014] 2. By setting up a silicon carbide heating assembly, and adopting a silicon carbide rod design with a diameter that gradually decreases from large to small from the outlet flow channel to the inlet flow channel, and using a corrugated pipe to provide thermal expansion compensation, an insulating collar to ensure electrical insulation, and an O-ring to achieve reliable sealing, the silicon carbide rod at the outlet end has a large power and a high heating temperature, which can effectively solve the problem of the aluminum molten material temperature dropping near the aluminum discharge channel end in the casting pan body. At the same time, this design not only ensures uniform preheating of the refractory material in the casting pan, but also enables continuous heating during the casting process, solving the problems of uneven temperature and inability to continuously heat existing devices.

[0015] 3. By setting up a clamping assembly, the clamping seat, spring, limit pin, and the hinge structure of the first and second clamping arms, as well as the elastic clamping action of the first and second pressure blocks, are used to achieve reliable fixing and quick assembly and disassembly of the silicon carbide rod heating assembly. This not only ensures the stability of the silicon carbide rod during operation, but also improves the maintenance efficiency of the equipment, providing a guarantee for the stable operation of the casting plate heating device and the improvement of the casting rod quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a casting plate heating device according to an embodiment of the present utility model;

[0018] Figure 2 This is a structural schematic diagram of a casting plate heating device according to an embodiment of the present utility model from another angle;

[0019] Figure 3 This is a partial structural schematic diagram of a casting disc heating device according to an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the structure of a silicon carbide rod heating assembly in a casting plate heating device according to an embodiment of the present utility model;

[0021] Figure 5 This is a partial structural schematic diagram of a silicon carbide rod heating assembly in a casting disc heating device according to an embodiment of the present utility model;

[0022] Figure 6 This is a schematic diagram of the clamping component in a casting disc heating device according to an embodiment of the present utility model.

[0023] In the picture:

[0024] 1. Square heating base; 2. Concave mounting plate; 3. Silicon carbide heating element assembly; 301. Silicon carbide rod; 302. Heating connector; 3021. Corrugated pipe; 3022. Snap-fit ​​sleeve; 3023. Insulating collar; 3024. O-ring seal; 3025. Conductive insulating tube; 3026. Conductive center component; 3027. L-shaped conductive copper sheet; 4. Horizontal support plate; 5. Clamping assembly; 501. Clamping seat; 502. Spring; 503. Limiting pin; 504. First clamping arm; 505. First pressure block; 506. Second clamping arm; 507. Second pressure block; 6. Silicone felt; 7. Cable outlet; 8. Plate mounting bracket; 9. Inlet flow channel locking hole; 10. Outlet flow channel locking hole; 11. Plate support plate; 12. Casting plate body; 13. Aluminum molten metal inlet flow channel; 14. Aluminum discharge flow channel. Detailed Implementation

[0025] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0026] According to an embodiment of the present invention, a heating device for a casting pan is provided.

[0027] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-6As shown, the casting plate heating device according to an embodiment of the present invention includes a square heating base 1. The inner side of the square heating base 1 is a hollow structure. Concave mounting plates 2 are symmetrically arranged on both sides of the hollow structure. A plurality of silicon carbide heating rods 3 are arranged linearly through one side of the concave mounting plates 2. A horizontal support plate 4 is provided at the bottom of the other side of the concave mounting plates 2. A plurality of clamping components 5 that cooperate with the silicon carbide heating rods 3 are provided at the top of the horizontal support plate 4. Silicone felt 6 is provided at the middle of the top and bottom of the silicon carbide heating rods 3. A plurality of cable outlets 7 are provided on both sides of the square heating base 1. A plate mounting frame 8 is provided at the top of the square heating base 1. An inlet flow channel card hole 9 is provided at one end of the plate mounting frame 8. An outlet flow channel card hole 10 is provided at the other end of the plate mounting frame 8. Plate support plates 11 are provided on both sides of the bottom of the plate mounting frame 8 (in addition, in specific applications, the plate support plate 11 is fixedly connected to the top of one side of the concave mounting plate 2).

[0028] It should be noted that, in specific applications, the inner side of the plate mounting bracket 8 is provided with a casting plate body 12 that cooperates with the plate support plate 11. One side of the casting plate body 12 is provided with an aluminum inlet channel 13 that cooperates with the inlet channel card hole 9, and the other side of the casting plate body 12 is provided with an aluminum discharge channel 14 that cooperates with the outlet channel card hole 10.

[0029] It should also be noted that this device uses a set of silicon carbide rods 301 with diameters ranging from large to small (Φ40mm, Φ38mm, Φ35mm, Φ32mm, Φ30mm, Φ28mm, Φ25mm, Φ22mm, Φ20mm, Φ18mm in specific applications) installed at the bottom of the casting disc body 12 as heating elements (the silicon carbide rods 301 are padded with silicon felt cotton 6 on both sides). Then, the casting disc refractory material is installed inside the casting disc body 12. The silicon carbide rods 301 are preheated by electricity before casting the refractory material inside the casting disc body 12, and can also be electrically heated during the casting process.

[0030] The diameter of the silicon carbide rod 1 in this device gradually decreases from large to small along the direction from the outlet flow channel 10 to the inlet flow channel 9. Since the silicon carbide rod 301 near the outlet flow channel 10 has a larger power and a higher heating temperature, it can compensate for the temperature drop of the molten aluminum near the end of the aluminum discharge channel 14 in the casting pan body 12 during the casting process, so that the temperature of the molten aluminum in the entire casting pan tends to be uniform, which is beneficial to improving the service life of the refractory material of the casting pan, and at the same time improving the metallurgical quality of the entire casting rod.

[0031] With the help of the above-mentioned technical solution of this utility model, the structure of this utility model is scientific and novel. By installing a set of silicon carbide rods 301 with a diameter from Φ40mm to Φ18mm as heating elements at the bottom of the casting plate body 12, and using the design of silicon felt cotton 6 laid on the top and bottom, together with the concave mounting plate 2, silicon carbide rod heating assembly 3 and clamping assembly 5 set in the square heating base 1, the preheating and continuous heating functions of the casting plate are realized. At the same time, through the cooperation of the plate mounting frame 8 and the plate support plate 11, the structural stability of the entire device in the high-temperature working environment is ensured.

[0032] In one embodiment, the silicon carbide heating element 3 includes a silicon carbide rod 301 extending through one side of the concave mounting plate 2. Both ends of the silicon carbide rod 301 are symmetrically provided with heating connectors 302 that cooperate with the concave mounting plate 2. The diameter of the silicon carbide rod 301 gradually decreases along the direction from the outlet flow channel hole 10 to the inlet flow channel hole 9. The heating connector 302 includes a corrugated tube 3021 sleeved on the outside of the silicon carbide rod 301. One end of the corrugated tube 3021 has a snap-fit ​​sleeve 3022 connected to the concave mounting plate 2. An insulating collar 3023 is provided on the outer side of one end of the sleeve 3022, and an O-ring 3024 that mates with the concave mounting plate 2 is provided on the outer side of the middle part of the snap-fit ​​sleeve 3022. A conductive insulating tube 3025 is provided on the inner side of the other end of the snap-fit ​​sleeve 3022. A conductive center piece 3026 that mates with the silicon carbide rod 301 is provided through one end of the conductive insulating tube 3025. An L-shaped conductive copper sheet 3027 is provided through the middle of one end of the conductive center piece 3026. This can effectively compensate for the temperature loss of molten aluminum during the flow process, ensure the uniformity of the temperature of molten aluminum in the entire casting pan, and improve the casting quality.

[0033] The working principle of the silicon carbide heating element 3 is as follows: It is connected to an external power source via an L-shaped conductive copper sheet 3027. Current is conducted to the silicon carbide rod 301 through the conductive center component 3026, causing the silicon carbide rod 301 to generate resistance heat, thereby heating the casting disc body 12. During this process, the bellows 3021 provides thermal expansion buffer, and the insulating collar 3023 and conductive insulating tube 3025 ensure electrical insulation. The silicon carbide heating element 3, through its design penetrating the concave mounting plate 2 and utilizing the O-ring seal 3024 to form a sealed connection with the concave mounting plate 2, combined with the fixing effect of the clamping component 5, enables the rapid installation and replacement of the silicon carbide rod 301.

[0034] The concave mounting plate 2 has several mounting holes on one side that mate with the silicon carbide heating element 3. The diameter of the mounting holes is arranged linearly from large to small, matching the design of the silicon carbide rod 301 whose diameter gradually decreases from the outlet flow channel hole 10 to the inlet flow channel hole 9, ensuring the stable installation of silicon carbide rods 301 of different specifications. At the same time, this diameter gradient design results in a larger heating power at the outlet end, which can effectively compensate for the temperature loss of molten aluminum during the flow process, thereby ensuring the uniformity of the molten aluminum temperature in the entire casting pan and improving the casting quality. In addition, this design can also preheat before casting and continuously heat during the casting process, effectively solving the problems of uneven preheating and inability to continuously heat in traditional casting pan heating.

[0035] In one embodiment, the clamping assembly 5 includes a clamping seat 501 disposed at the top of the horizontal support plate 4. Springs 502 are disposed on both sides of the top of the clamping seat 501. Arc-shaped portions are disposed on both sides of the middle portion of the top of the clamping seat 501. A limiting pin 503 is disposed through one end of each arc-shaped portion. A first clamping arm 504 is disposed on the outer side of the middle portion of the limiting pin 503. A first pressure block 505 is disposed on one side of the first clamping arm 504. A second clamping arm 506, which cooperates with the limiting pin 503, is provided through the middle of one end of the 4. A second pressing block 507 is provided on one side of the second clamping arm 506. The bottom ends of the first pressing block 505 and the second pressing block 507 are provided with telescopic rods that cooperate with the spring 502. Thus, through the hinge action of the limiting pin 503 and the elastic action of the spring 502, the silicon carbide heating element 3 is stably clamped, and the silicon carbide heating element 3 is easy to disassemble and assemble to replace the silicon carbide rod 301.

[0036] The working principle of the clamping assembly 5 is as follows: When it is necessary to fix the silicon carbide heating rod assembly 3, the first clamping arm 504 and the second clamping arm 506 open and close through the hinge action of the limiting pin 503. Under the elastic force of the spring 502, the first pressure block 505 and the second pressure block 507 apply a continuous clamping force to the silicon carbide heating rod assembly 3 through the telescopic rod. When it is necessary to replace the silicon carbide rod, the elastic force of the spring 502 can be overcome by external force, so that the first clamping arm 504 and the second clamping arm 506 open, thereby releasing the silicon carbide heating rod assembly 3. This elastic clamping mechanism not only ensures the stability of the silicon carbide heating rod assembly 3, but also facilitates the quick replacement and maintenance of the silicon carbide rod 301, improving the practicality and maintenance efficiency of the casting plate heating device.

[0037] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0038] In practical applications, firstly, the casting disc body 12 is installed inside the disc mounting bracket 8, aligning the aluminum inlet flow channel 13 with the inlet flow channel locking hole 9, and the aluminum discharge flow channel 14 with the outlet flow channel locking hole 10. The stability of the overall structure is ensured by the fixed connection between the disc support plate 11 and the concave mounting plate 2. Then, in descending order of diameter, the silicon carbide heating rod assembly 3 is passed through the corresponding mounting holes on the concave mounting plate 2, and silicone felt 6 is laid at the top and bottom of the silicon carbide rod 301 for heat insulation protection.

[0039] During installation, the silicon carbide heating element 3 forms a sealed connection with the concave mounting plate 2 through the corrugated pipe 3021, the snap-fit ​​sleeve 3022, and the O-ring seal 3024. Simultaneously, electrical insulation performance is ensured by the insulating collar 3023 and the conductive insulating tube 3025. After installation, the silicon carbide heating element 3 is securely clamped by the first clamping arm 504 and the second clamping arm 506 of the clamping assembly 5 under the hinge action of the limiting pin 503, and by the first pressure block 505 and the second pressure block 507 under the elastic force of the spring 502.

[0040] Before the casting operation, the L-shaped conductive copper sheet 3027 is connected to an external power source. The current is conducted to the silicon carbide rod 301 through the conductive center component 3026, causing it to generate resistance heat to preheat the casting pan body 12. Since the diameter of the silicon carbide rod 301 gradually decreases from the outlet flow channel hole 10 to the inlet flow channel hole 9, the larger diameter silicon carbide rod at the outlet end generates greater heating power. This effectively compensates for the temperature loss near the aluminum discharge channel 14 during the casting process, ensuring the uniformity of the aluminum temperature throughout the casting pan.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heating device for a casting plate, comprising a square heating base (1), characterized in that, The inner side of the square heating base (1) is hollow. Concave mounting plates (2) are symmetrically arranged on both sides of the hollow structure. Several silicon carbide heating rods (3) are arranged linearly through one side of the concave mounting plate (2). A horizontal support plate (4) is provided at the bottom of the other side of the concave mounting plate (2). Several clamping components (5) that cooperate with the silicon carbide heating rods (3) are provided at the top of the horizontal support plate (4). Silicone felt (6) is provided at the middle of the top and bottom of the silicon carbide heating rods (3).

2. The casting plate heating device according to claim 1, characterized in that, The square heating base (1) has several outlet ports (7) on both sides. The top of the square heating base (1) is provided with a plate mounting bracket (8). One end of the plate mounting bracket (8) is provided with an inlet flow channel card hole (9), and the other end of the plate mounting bracket (8) is provided with an outlet flow channel card hole (10). The bottom ends of the plate mounting bracket (8) are provided with plate support plates (11) on both sides.

3. The casting plate heating device according to claim 2, characterized in that, The silicon carbide heating assembly (3) includes a silicon carbide rod (301) that passes through one side of the concave mounting plate (2). The two ends of the silicon carbide rod (301) are symmetrically provided with heating connectors (302) that cooperate with the concave mounting plate (2). The diameter of the silicon carbide rod (301) gradually decreases along the direction from the outlet flow channel hole (10) to the inlet flow channel hole (9).

4. The casting plate heating device according to claim 3, characterized in that, The heating connector (302) includes a corrugated tube (3021) sleeved on the outside of the silicon carbide rod (301). A snap-fit ​​sleeve (3022) connected to the concave mounting plate (2) is provided on the outside of one end of the corrugated tube (3021). An insulating collar (3023) is provided on the outside of one end of the snap-fit ​​sleeve (3022).

5. The casting plate heating device according to claim 4, characterized in that, The outer side of the middle part of the snap-fit ​​sleeve (3022) is provided with an O-ring (3024) that cooperates with the concave mounting plate (2). The inner side of the other end of the snap-fit ​​sleeve (3022) is provided with a conductive insulating tube (3025). One end of the conductive insulating tube (3025) is provided with a conductive center piece (3026) that cooperates with the silicon carbide rod (301). One end of the conductive center piece (3026) is provided with an L-shaped conductive copper sheet (3027) that passes through the middle of one end.

6. The casting plate heating device according to claim 2, characterized in that, The clamping assembly (5) includes a clamping seat (501) disposed at the top of the horizontal support plate (4). Springs (502) are provided on both sides of the top of the clamping seat (501). Arc-shaped portions are provided on both sides of the middle part of the top of the clamping seat (501). A limit pin (503) is provided through one end of the arc-shaped portion.

7. A casting pan heating device according to claim 6, characterized in that, A first clamping arm (504) is provided on the outer side of the middle part of the limiting pin (503), a first pressing block (505) is provided on one side of the first clamping arm (504), and a second clamping arm (506) that cooperates with the limiting pin (503) is provided through the middle of one end of the first clamping arm (504).

8. The casting plate heating device according to claim 7, characterized in that, A second pressure block (507) is provided on one side of the second clamping arm (506), and the bottom ends of the first pressure block (505) and the second pressure block (507) are both provided with telescopic rods that cooperate with the spring (502).

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