Casting nozzle for cast rolling of aluminum alloy and cast rolling device
By setting graphite plates and graphite blocks on the casting nozzle substrate, the problem of low precision in the gap between the casting nozzle and the rolls was solved, enabling stable pouring of aluminum liquid and crack-free production of strips and plates, thus improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2026-03-13
AI Technical Summary
In existing aluminum alloy casting and rolling processes, the precision of the fit between the casting nozzle and the roll is not high, which leads to problems such as aluminum leakage or the casting nozzle being crushed, as well as edge cracks caused by friction between the solidified strip and the side seal of the casting nozzle.
The design employs a casting nozzle substrate, graphite plate, and graphite block. The graphite plate is in close contact with the upper and lower rolls of the casting nozzle substrate, while the graphite block is located on both sides of the casting nozzle substrate, forming good lubrication and dimensional stability, reducing friction, and preventing aluminum melt leakage and edge cracks.
It improves the ease of installation of the casting nozzle and rolls, reduces aluminum melt leakage and strip edge cracks, and ensures stable production of aluminum alloy strips.
Smart Images
Figure CN223989043U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of aluminum alloy casting and rolling equipment, and in particular to a casting nozzle and casting and rolling device for aluminum alloy casting and rolling. Background Technology
[0002] The aluminum alloy casting and rolling process involves pouring molten aluminum through a casting nozzle onto upper and lower rolls. After cooling, crystallization, solidification, and rolling, aluminum alloy sheets and strips are produced. Current production methods place the casting nozzle between the upper and lower rolls, forming a casting zone through the nozzle's side seal. However, due to the low precision of the fit between the nozzle, nozzle side seal, and rolls, aluminum leakage can easily occur when the gap is too large, and when the gap is too small, the nozzle can easily be drawn into the gap between the upper and lower rolls and crushed. Furthermore, the solidified sheet and strip experience friction with the nozzle side seal, which can easily lead to large edge cracks. Utility Model Content
[0003] The purpose of this invention is to provide a casting nozzle and casting device for aluminum alloy casting and rolling, in order to solve the problems mentioned above.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] In a first aspect, this application provides a casting nozzle for aluminum alloy casting and rolling, comprising:
[0006] The casting nozzle base has an internal pouring gate;
[0007] At least two graphite plates are respectively disposed on the top and bottom surfaces of the first end position of the casting nozzle base, and are flush with the top and bottom surfaces of the casting nozzle base;
[0008] At least two extensions are provided at the first end of the casting nozzle base and respectively located on both sides of the pouring gate. The height of the two extensions is less than the height of the casting nozzle base. The top and bottom surfaces of the casting nozzle base are provided with inclined transition portions that transition to the extensions.
[0009] At least two graphite blocks are respectively disposed on the sides of the two extensions, and the two graphite blocks are arranged opposite to each other.
[0010] In one possible implementation, the casting nozzle base includes an upper cover plate and a lower cover plate, which are assembled together, and the space between the upper cover plate and the lower cover plate constitutes the pouring gate.
[0011] In one possible implementation, it further includes: the first support plate, the second support plate, the first side sealing plate, and the second side sealing plate;
[0012] The first support plate and the second support plate are spaced apart and located between the upper cover plate and the lower cover plate;
[0013] The first side sealing plate is installed on the first side of the upper cover plate and the lower cover plate; the second side sealing plate is installed on the second side of the upper cover plate and the lower cover plate.
[0014] In one possible implementation, alloy protective plates are installed on the outer sides of the first side sealing plate, the second side sealing plate, and the two extensions.
[0015] In one possible implementation, grooves for mounting graphite plates are provided on both the top and bottom surfaces of the casting nozzle substrate, and the graphite plates are mounted into the grooves.
[0016] In one possible implementation, mounting grooves are provided on the opposite sides of the two extensions, and the graphite block is mounted into the mounting grooves.
[0017] In one possible implementation, the upper cover plate, lower cover plate, first support plate, second support plate, first side sealing plate, and second side sealing plate are all made of aluminum silicate insulation material.
[0018] In one possible implementation, the two graphite blocks are mounted at a distance of -mm from the pouring gate.
[0019] Secondly, this application also provides a casting and rolling apparatus, which includes the casting nozzle for aluminum alloy casting and rolling as provided in the first aspect above.
[0020] In one possible implementation, the casting roll includes an upper roll and a lower roll that cooperate with each other, and the upper roll and the lower roll are provided with protruding annular protrusions;
[0021] The casting nozzle base is located between the two annular protrusions, and the end faces of the graphite plate and the two graphite blocks at the top of the casting nozzle base are in close contact with the upper annular protrusion, while the lower end faces of the graphite plate and the two graphite blocks at the bottom of the casting nozzle base are in close contact with the lower annular protrusion.
[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0023] In this invention, the casting nozzle base is installed between the upper and lower rolls. During the rotation of the upper and lower rolls, the graphite plate and graphite block have good lubricity and can withstand frictional wear. This allows the casting nozzle base and extension to be conveniently installed between the upper and lower rolls, facilitating its use. In addition, the graphite block has good lubricity, and the friction between the strip and the graphite block located between the two graphite blocks is small, which can eliminate edge cracks in the strip. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the structure of this utility model;
[0025] Figure 2 This is a three-dimensional structural diagram of the casting roll 6 in this utility model;
[0026] Figure 3 This is a front view schematic diagram of the casting roll 6 in this utility model;
[0027] Figure 4 This is an exploded view of the casting nozzle substrate in this utility model.
[0028] Marked in the image:
[0029] 1. Casting nozzle base; 100. Pour gate; 101. Upper cover plate; 102. Lower cover plate; 103. First support plate; 104. Second support plate; 105. First side sealing plate; 106. Second side sealing plate;
[0030] 2. Graphite plate;
[0031] 3. Extension section; 301. Inclined transition section;
[0032] 4. Graphite blocks; 5. Alloy protective plates;
[0033] 6. Casting roll; 601. Upper roll; 602. Lower roll; 603. Annular protrusion. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.
[0035] use Figure 1 The overall structure of this aluminum alloy casting nozzle is described. Figure 1 This is a schematic diagram of the structure of this utility model.
[0036] The casting nozzle for aluminum alloy casting and rolling includes a nozzle base 1, a graphite plate 2, an extension 3, and a graphite block 4, wherein:
[0037] The casting nozzle base 1 is rectangular in shape and has a pouring gate 100 inside. The pouring gate 100 can be located in the middle of the casting nozzle base 1 and can penetrate the entire casting nozzle base 1.
[0038] like Figure 2 As shown, Figure 2This is a three-dimensional structural diagram of the casting roll 6 in this utility model. During casting and rolling production via the casting nozzle base 1, the casting nozzle base 1 is placed between the casting rolls 6, specifically between the upper roll 601 and the lower roll 602. Molten aluminum can then be poured through the pouring port 100 between the upper roll 601 and the lower roll 602, and after cooling, crystallization, solidification, and rolling, aluminum alloy strips are produced.
[0039] The number of graphite plates 2 is at least two. The first graphite plate 2 is located on the top surface of the first end position of the casting nozzle base 1, and the second graphite plate 2 is located on the bottom surface of the first end position of the casting nozzle base 1. The surfaces of the two graphite plates 2 are flush with the top and bottom surfaces of the casting nozzle base 1, so that the upper and lower surfaces of the casting nozzle base 1 form a flat surface.
[0040] like Figure 2 As shown, Figure 2 This is a three-dimensional structural diagram of the casting roll 6 in this utility model. When the casting nozzle base 1 is installed between the upper roll 601 and the lower roll 602, the graphite plate 2 on the top of the casting nozzle base 1 is in close contact with the bottom of the upper roll 601, and the graphite plate 2 at the bottom of the casting nozzle base 1 is in close contact with the top of the lower roll 602. Thus, the two graphite plates 2 can prevent molten aluminum from leaking out from both the top and bottom, while ensuring good lubrication of the casting nozzle base 1 between the upper roll 601 and the lower roll 602. In addition, the two graphite plates 2 can scrape off the thicker carbon layer on the surface of the upper roll 601 and the lower roll 602, preventing the carbon layer from falling into the molten aluminum and avoiding contamination of the molten aluminum.
[0041] The number of extensions 3 is at least two, and the two extensions 3 are located at the first end of the casting nozzle base 1 and on both sides of the pouring gate 100. The two extensions 3 are cuboid in shape, and the height of the two extensions 3 is less than the height of the casting nozzle base 1. The top and bottom surfaces of the casting nozzle base 1 are provided with inclined transition portions 301 that transition to the extensions 3.
[0042] The number of graphite blocks 4 is at least two. The two graphite blocks 4 are respectively disposed on the side of the first extension 3 and the side of the second extension 3. The installation position of the two graphite blocks 4 is 5-10mm away from the pouring port 100. In addition, the two graphite blocks 4 are arranged opposite to each other.
[0043] like Figure 2 As shown, Figure 2This is a three-dimensional structural diagram of the casting roll 6 in this utility model. When the casting nozzle base 1 is installed between the upper roll 601 and the lower roll 602, the top surfaces of the two graphite blocks 4 are in close contact with the bottom surface of the upper roll 601, and the bottom surfaces of the two graphite blocks 4 are in close contact with the top surface of the lower roll 602. That is, the space between the two graphite blocks 4 constitutes the casting zone and is in contact with the molten aluminum, which can improve the cooling efficiency of the molten aluminum and prevent the molten aluminum from leaking out from both sides; the two graphite blocks 4 can also play a role in dimensional determination, ensuring the stability of the aluminum strip width, and the graphite blocks 4 have good lubricity, resulting in low friction between the strip and the graphite blocks 4, which can eliminate edge cracks in the strip.
[0044] In this embodiment, through the cooperative arrangement of the casting nozzle base 1, two graphite plates 2, two extensions 3, and two graphite blocks 4, the casting nozzle base 1 and the extensions 3 can be installed between the upper roll 601 and the lower roll 602. The tops of the graphite plates 2 and the graphite blocks 4 are in close contact with the bottom of the upper roll 601, and the bottoms of the graphite plates 2 and the graphite blocks 4 are in close contact with the top of the lower roll 602. During the rotation of the upper roll 601 and the lower roll 602, the graphite plates 2 and the graphite blocks 4 have good lubricity and can withstand frictional wear. This allows the casting nozzle base 1 and the extensions 3 to be conveniently adapted to the installation gap between the upper roll 601 and the lower roll 602. This avoids the current situation where the precision of the fit between the casting nozzle, the casting nozzle side seal, and the roll is not high, which can easily lead to aluminum leakage when the gap is too large, or the casting nozzle can easily be carried into the roll gap and crushed when the gap is too small. This simplifies the use of the casting nozzle. In addition, the graphite block 4 has good lubricity, and the friction between the strip and the graphite block 4 located between the two graphite blocks 4 is small, which can eliminate edge cracks in the strip.
[0045] In some embodiments, such as Figure 1 and Figure 4 As shown. Figure 1 This is a schematic diagram of the structure of this utility model. Figure 4 This is an exploded view of the casting nozzle base 1 in this utility model. The specific structure and related components of the casting nozzle base 1 are as follows: The casting nozzle base 1 includes an upper cover plate 101, a lower cover plate 102, a first support plate 103, a second support plate 104, a first side sealing plate 105, and a second side sealing plate 106, and all of the above components are made of aluminum silicate board insulation material.
[0046] The upper cover plate 101 and the lower cover plate 102 are assembled together, and the space between the upper cover plate 101 and the lower cover plate 102 forms the pouring gate 100.
[0047] The first support plate 103 and the second support plate 104 are spaced apart and located between the upper cover plate 101 and the lower cover plate 102. The first support plate 103 and the second support plate 104 support the upper cover plate 101 and the lower cover plate 102, so that a pouring port 100 is left between the upper cover plate 101 and the lower cover plate 102.
[0048] The first side sealing plate 105 is installed on the first side of the upper cover plate 101 and the lower cover plate 102; the second side sealing plate 106 is installed on the second side of the upper cover plate 101 and the lower cover plate 102. The installation of the first side sealing plate 105 and the second side sealing plate 106 makes the upper cover plate 101 and the lower cover plate 102 as a whole form an enclosure with a central pouring gate 100.
[0049] In some embodiments, such as Figure 1 and Figure 2 As shown. Figure 1 This is a schematic diagram of the structure of this utility model. Figure 2 This is a three-dimensional structural diagram of the casting roll 6 in this utility model. To improve the overall structural strength of the casting nozzle base 1, alloy protective plates 5 are installed on the outer sides of the first side sealing plate 105, the second side sealing plate 106, and the two extensions 3. The alloy protective plates 5 can be connected and installed using screws. By installing the alloy protective plates 5 to the outside of the casting nozzle base 1, the overall structure of the casting nozzle base 1 can be improved.
[0050] In some embodiments, such as Figure 1 As shown. Figure 1 This is a schematic diagram of the structure of this utility model. In order to achieve the purpose of installing graphite plate 2, grooves for installing graphite plate 2 are provided on the top and bottom surfaces of the casting nozzle base 1. Specifically, grooves for installing graphite plate 2 are provided on the top surface of the upper cover plate 101 and the bottom surface of the lower cover plate 102, so that graphite plate 2 can be easily installed into the grooves.
[0051] To facilitate the installation of the graphite block 4, mounting grooves are provided on the opposite sides of the two extensions 3, allowing the graphite block 4 to be easily installed into the mounting grooves.
[0052] like Figure 2 and Figure 3 As shown. Figure 2 This is a three-dimensional structural diagram of the casting roll 6 in this utility model. Figure 3 This is a front view schematic diagram of the casting roll 6 in this utility model. This utility model embodiment also provides a casting and rolling device, including the casting roll 6 and the aforementioned aluminum alloy casting nozzle. The casting roll 6 includes an upper roll 601 and a lower roll 602 that cooperate with each other. The upper roll 601 and the lower roll 602 are provided with protruding annular protrusions 603, the protruding portion of which has a size of 10-20mm.
[0053] The casting nozzle base 1 is located between two annular protrusions 603, and the upper part of the end face of the graphite plate 2 and the two graphite blocks 4 at the top of the casting nozzle base 1 is in close contact with the upper annular protrusion 603, and the lower part of the end face of the graphite plate 2 and the two graphite blocks 4 at the bottom of the casting nozzle base 1 is in close contact with the lower annular protrusion 603.
[0054] In this embodiment, after assembling the casting nozzle base 1 and adjusting the roll gap between the upper roll 601 and the lower roll 602, the casting nozzle base 1 is installed between the upper roll 601 and the lower roll 602. The upper and lower graphite plates 2 are respectively attached to the upper roll 601 and the lower roll 602 to prevent molten aluminum from leaking out from both directions. This also ensures good lubrication between the casting nozzle base 1 and the upper roll 601 and the lower roll 602, and can scrape off the thicker carbon layer on the surface of the upper roll 601 and the lower roll 602, preventing the carbon layer from falling into the molten aluminum and contaminating it. Two graphite blocks 4 are respectively attached to both sides of the upper roll 601 and the lower roll 602 and are in contact with the molten aluminum, which can enhance the cooling of the molten aluminum and prevent it from leaking out from both sides. The space between the two graphite blocks 4 also serves to fix the dimensions, ensuring the stability of the aluminum strip width, reducing the friction between the strip and the casting nozzle, and eliminating edge cracks in the strip.
[0055] Furthermore, during the rotation of the upper roll 601 and the lower roll 602, the graphite plate 2 and the graphite block 4 have good lubricity and can withstand frictional wear. This allows the casting nozzle base 1 and the extension 3 to be conveniently fitted into the installation gap between the upper roll 601 and the lower roll 602. This avoids the current situation where the gap between the casting nozzle, the casting nozzle side seal and the roll is not precise enough, which can easily lead to aluminum leakage when the gap is too large, or the casting nozzle can easily be carried into the roll gap and crushed when the gap is too small. This makes the use more convenient.
[0056] In the description of this utility model, it should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0057] Furthermore, in the description of this utility model, 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.
[0058] On the other hand, it should be noted that, unless otherwise explicitly specified and limited, the terms "located at," "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
Claims
1. A casting nozzle for casting aluminum alloys, characterized by, include: The casting nozzle base (1) has a pouring gate (100) inside; At least two graphite plates (2) are respectively disposed on the top and bottom surfaces of the first end position of the casting nozzle base (1), and are flush with the top and bottom surfaces of the casting nozzle base (1); At least two extensions (3) are provided at the first end of the casting nozzle base (1) and respectively located on both sides of the pouring port (100). The height of the two extensions (3) is less than the height of the casting nozzle base (1). The top and bottom surfaces of the casting nozzle base (1) are provided with inclined transition portions (301) that transition to the extensions (3). At least two graphite blocks (4) are respectively disposed on the sides of the two extensions (3), and the two graphite blocks (4) are arranged opposite to each other.
2. The aluminum alloy cast roll casting nozzle of claim 1, wherein, The casting nozzle base (1) includes an upper cover plate (101) and a lower cover plate (102). The upper cover plate (101) and the lower cover plate (102) are assembled together, and the space between the upper cover plate (101) and the lower cover plate (102) constitutes the pouring gate (100).
3. The aluminum alloy cast roll casting nozzle of claim 2, wherein Also includes: First support plate (103), second support plate (104), first side sealing plate (105), and second side sealing plate (106); The first support plate (103) and the second support plate (104) are spaced apart and located between the upper cover plate (101) and the lower cover plate (102); The first side sealing plate (105) is installed on the first side of the upper cover plate (101) and the lower cover plate (102); the second side sealing plate (106) is installed on the second side of the upper cover plate (101) and the lower cover plate (102).
4. The aluminum alloy cast roll casting nozzle of claim 3, wherein Alloy protective plates (5) are installed on the outer sides of the first side sealing plate (105), the second side sealing plate (106), and the two extensions (3).
5. The aluminum alloy cast roll casting nozzle according to any one of claims 1 to 4, characterized by, The top and bottom surfaces of the casting nozzle substrate (1) are provided with recesses for installing graphite plates (2), and the graphite plates (2) are installed into the recesses.
6. The aluminum alloy cast roll casting nozzle according to any one of claims 1 to 4, characterized by, The two extensions (3) have mounting grooves on their opposite sides, and the graphite block (4) is installed into the mounting groove.
7. The aluminum alloy cast roll casting nozzle according to claim 3 or 4, characterized by, The upper cover plate (101), lower cover plate (102), first support plate (103), second support plate (104), first side sealing plate (105) and second side sealing plate (106) are all aluminum silicate board insulation materials.
8. The aluminum alloy cast roll casting nozzle of claim 1 wherein, The two graphite blocks (4) are installed at a distance of 5-10 mm from the pouring port (100).
9. A casting installation comprising a casting roll (6), characterized in that It also includes the casting nozzle for aluminum alloy casting and rolling as described in any one of claims 1-8 above.
10. The casting installation according to claim 9, characterized in that The casting roll (6) includes an upper roll (601) and a lower roll (602) that cooperate with each other, and the upper roll (601) and the lower roll (602) are provided with protruding annular protrusions (603); The nozzle base (1) is located between two annular protrusions (603), and the graphite plate (2) on the top of the nozzle base (1) and the upper part of the end face of the two graphite blocks (4) are tightly attached to the upper annular protrusion (603), and the graphite plate (2) on the bottom of the nozzle base (1) and the lower part of the end face of the two graphite blocks (4) are tightly attached to the lower annular protrusion (603).