Centrifugal casting mold for bimetallic wear-resistant pipe

Abstract

The application discloses a bimetal wear-resistant pipe centrifugal casting forming die and relates to the technical field of bimetal wear-resistant pipe processing. The bimetal wear-resistant pipe centrifugal casting forming die comprises a die body and a fixing block, the bottom of the die body is provided with a mounting disc, the bottom of the mounting disc is provided with a fixing disc through bolt fixing, the middle of the fixing disc is provided with a slot, and the outside of the slot is provided with a connecting assembly for assisting in fixing with a motor driving shaft. The bimetal wear-resistant pipe centrifugal casting forming die realizes quick positioning and clamping with the motor driving shaft through the special connecting assembly. Two groups of symmetrically distributed clamping structures can synchronously realize clamping and loosening actions under the driving of hydraulic rods. In cooperation with the arc-shaped structure of the clamping plate and the design of the anti-skid tooth pattern, the bimetal wear-resistant pipe centrifugal casting forming die can be precisely matched with the driving shaft and can effectively increase the clamping friction force, thereby avoiding relative sliding in the centrifugal rotation process, shortening the clamping and dismounting time of the die and the driving shaft and improving the overall casting production efficiency.

Description

Technical Field

[0001] This invention relates to the field of bimetallic wear-resistant tube processing technology, specifically a centrifugal casting mold for bimetallic wear-resistant tubes. Background Technology

[0002] Bimetallic wear-resistant pipes, with their tough outer layer and wear-resistant inner layer, are widely used in mining, metallurgy, chemical and other fields. Their molding quality directly determines their performance and service life. Currently, most bimetallic wear-resistant pipes are manufactured using centrifugal casting.

[0003] However, existing centrifugal casting molds have many shortcomings. Clamping relies heavily on manual bolt fixing, which is inefficient and prone to problems such as insecure fixing. Slippage is likely to occur during high-speed rotation. The mold support structure is fixed, has poor adaptability, and is difficult to meet the needs of different installation scenarios and specifications.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and proposed a centrifugal casting mold for bimetallic wear-resistant tubes. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a bimetallic wear-resistant tube centrifugal casting mold, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a centrifugal casting mold for bimetallic wear-resistant tubes, comprising a mold body and a fixing block. An mounting plate is installed at the bottom of the mold body, and a fixing plate is fixed to the bottom of the mounting plate by bolts. A slot is provided in the middle of the fixing plate, and a connecting assembly for assisting in fixing to a motor drive shaft is installed outside the slot. The connecting assembly includes a collection plate, a connecting plate, an inclined groove, a slider, a connecting plate, a connecting block, and a clamping plate. Connecting plates are installed at both ends of the collection plate. An inclined groove is provided inside the connecting plate, and a slider is slidably installed inside the inclined groove. A connecting plate is provided on one side of the slider, and a rotating shaft is rotatably installed inside the connecting plate. A connecting block is rotatably installed on the top of the connecting plate, and a clamping plate is installed on one side of the outer surface of the connecting block. A hydraulic rod is provided on one side of the outer surface of the collection plate, and the fixing block is installed at the end of the hydraulic rod.

[0007] Furthermore, the fixing block is fixedly disposed on the outer surface of the bottom of the fixing disk, and the bottom of the fixing disk is equipped with auxiliary components for auxiliary support.

[0008] Furthermore, the auxiliary component includes an upper limit plate, a guide block, a first telescopic rod, and a second telescopic rod. The guide block is slidably installed inside the upper limit plate, the first telescopic rod is provided at the bottom of the guide block, and the second telescopic rod is slidably installed inside the first telescopic rod. The first telescopic rod and the second telescopic rod are fixed by bolts.

[0009] Furthermore, the auxiliary component also includes a lower limit plate and a mounting plate, and the lower limit plate is slidably mounted on the bottom of the telescopic rod two, with the mounting plate arranged in a ring on the outer surface of the lower limit plate.

[0010] Furthermore, the upper limit plate and the lower limit plate have the same diameter, and both the upper limit plate and the lower limit plate have a ring structure.

[0011] Furthermore, a connecting plate is installed on the top of the mold body, and a cover is fixed to the top of the connecting plate by bolts.

[0012] Furthermore, the mold body has a hollow structure, and the mold body and the slot are coaxially arranged.

[0013] Furthermore, the connecting plate, inclined groove, slider, connecting plate, connecting block, clamping plate and rotating shaft are provided in two sets. The two sets of connecting plate, inclined groove, slider, connecting plate, connecting block, clamping plate and rotating shaft have the same structure and are symmetrically distributed at both ends of the assembly plate.

[0014] Furthermore, the bottom outer surface of the fixed disk and the upper limit disk are integrated into one structure, and the upper limit disk and the fixed disk are coaxially arranged.

[0015] Furthermore, the inner surface of the clamping plate is provided with anti-slip serrations, and the clamping plate has an arc-shaped structure.

[0016] This invention provides a centrifugal casting mold for bimetallic wear-resistant tubes, which has the following beneficial effects: 1. This bimetallic wear-resistant tube centrifugal casting mold achieves rapid positioning and clamping with the motor drive shaft through a dedicated connecting component. Two symmetrically distributed clamping structures can simultaneously clamp and release under the drive of hydraulic rods. Combined with the arc-shaped structure and anti-slip toothed design of the clamping plate, it can not only fit precisely with the drive shaft, but also effectively increase the clamping friction, avoid relative slippage during centrifugal rotation, shorten the clamping and disassembly time between the mold and the drive shaft, and improve the overall casting production efficiency.

[0017] 2. This bimetallic wear-resistant tube centrifugal casting mold features a mold body coaxially aligned with the slot in the center of the fixed plate. Combined with the integrated design and coaxial arrangement of the upper limit plate and the fixed plate, this ensures uniform force distribution during high-speed centrifugal rotation, preventing issues such as eccentricity and wobbling. The auxiliary components, through a retractable telescopic rod structure and a sliding guide block design, allow for flexible adjustment of the support height and position, ensuring the upper and lower limit plates remain parallel and provide uniform annular support to the mold. This further enhances the stability of mold rotation and effectively solves the problem of uneven casting wall thickness caused by unstable support and insufficient coaxiality in traditional molds.

[0018] 3. The centrifugal casting mold for bimetallic wear-resistant tubes has two auxiliary components, telescopic rod one and telescopic rod two, whose lengths can be adjusted by sliding and fixed by bolts. This allows it to adapt to installation scenarios of different heights and mold requirements of different specifications, thus expanding the applicability of the mold. The upper limit plate and the lower limit plate both adopt a ring structure with the same diameter, which can provide comprehensive and uniform support to the bottom of the mold and reduce local stress concentration during the rotation of the mold. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a centrifugal casting mold for bimetallic wear-resistant tubes according to the present invention. Figure 2 This is a schematic diagram of another perspective of the centrifugal casting mold for bimetallic wear-resistant tubes according to the present invention; Figure 3 This is a schematic diagram of the fixed disc connection structure of a centrifugal casting mold for bimetallic wear-resistant tubes according to the present invention; Figure 4 This is a schematic diagram of the unfolded structure of the mold body and cover of a bimetallic wear-resistant tube centrifugal casting mold according to the present invention. Figure 5 This is a schematic diagram of the connecting component structure of a bimetallic wear-resistant tube centrifugal casting molding die according to the present invention; Figure 6 This is a schematic diagram of the auxiliary component structure of a centrifugal casting mold for bimetallic wear-resistant tubes according to the present invention.

[0020] In the diagram: 1. Mold body; 2. Cover; 3. Mounting plate; 4. Fixing plate; 5. Fixing block; 6. Hydraulic rod; 7. Slot; 8. Connecting plate; 9. Connecting assembly; 901. Assembly plate; 902. Connecting plate; 903. Inclined groove; 904. Slider; 905. Connecting plate; 906. Connecting block; 907. Clamping plate; 908. Rotating shaft; 10. Auxiliary assembly; 1001. Upper limit plate; 1002. Guide block; 1003. Telescopic rod one; 1004. Telescopic rod two; 1005. Lower limit plate; 1006. Mounting plate. Detailed Implementation

[0021] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0022] like Figures 1-6As shown, the present invention provides a technical solution: a centrifugal casting mold for bimetallic wear-resistant tubes, comprising a mold body 1, a cover 2, a mounting plate 3, a fixing plate 4, a fixing block 5, a hydraulic rod 6, a slot 7, a connecting plate 8, a connecting assembly 9, a collection plate 901, a connecting plate 902, a sloping groove 903, a slider 904, a connecting plate 905, a connecting block 906, a clamping plate 907, a rotating shaft 908, an auxiliary assembly 10, an upper limit plate 1001, a guide block 1002, a first telescopic rod 1003, a second telescopic rod 1004, a lower limit plate 1005, and a mounting plate 1006. The mounting plate 3 is mounted on the bottom of the mold body 1, and a fixing plate 4 is bolted to the bottom of the mounting plate 3. The bottom outer surface of the fixing plate 4 is integrated with the upper limit plate 1001. The structure is as follows: the upper limit plate 1001 and the fixed plate 4 are coaxially arranged; the mold body 1 has a hollow structure; the mold body 1 and the slot 7 are coaxially arranged; a connecting plate 8 is installed on the top of the mold body 1; and a cover 2 is fixed to the top of the connecting plate 8 by bolts. The cover 2 is fixed to the connecting plate 8 on the top of the mold body 1 by bolts, thus completing the sealed assembly of the mold body 1. Because the mold body 1 has a hollow structure, the sealed mold interior forms a cavity for casting bimetallic wear-resistant tubes. The fixed plate 4 has a slot 7 in the middle, and a connecting component 9 for assisting in fixing to the motor drive shaft is installed on the outside of the slot 7. The connecting component 9 includes a collection plate 901, a connecting plate 902, a sloping groove 903, a slider 904, a connecting plate 905, and a connecting block 906. The assembly plate 901 has a clamping plate 907, and connecting plates 902 are installed at both ends of the assembly plate 901. The connecting plate 902 has an inclined groove 903 inside, and a slider 904 is slidably installed inside the inclined groove 903. A connecting plate 905 is provided on one side of the slider 904, and a rotating shaft 908 is rotatably installed inside the connecting plate 905. A connecting block 906 is rotatably installed on the top of the connecting plate 905, and a clamping plate 907 is installed on one side of the outer surface of the connecting block 906. The inner surface of the clamping plate 907 has anti-slip teeth, and the clamping plate 907 has an arc-shaped structure. Two sets of connecting plates 902, inclined grooves 903, sliders 904, connecting plates 905, connecting blocks 906, clamping plates 907, and rotating shafts 908 are provided. 4. The connecting plate 905, connecting block 906, clamping plate 907, and rotating shaft 908 have the same structure and are symmetrically distributed at both ends of the assembly plate 901. A hydraulic rod 6 is provided on one side of the outer surface of the assembly plate 901, and a fixing block 5 is installed at the end of the hydraulic rod 6. The two sets of connecting plates 902 and inclined grooves 903 of the connecting assembly 9 are symmetrically distributed at both ends of the assembly plate 901. When the hydraulic rod 6 is activated, the end of the hydraulic rod 6 is fixed to the fixing block 5 at the bottom of the fixing plate 4. When the hydraulic rod 6 extends or retracts, it will drive the assembly plate 901 to move horizontally. When the assembly plate 901 moves, the connecting plates 902 at both ends move synchronously, so that the slider 904 in the inclined groove 903 inside the connecting plate 902 slides along the inclined groove 903. The slider 904 drives the connecting plate 905 to rotate around the rotating shaft 908.The connecting block 906 at the top of the connecting plate 905 is then linked, ultimately driving the two sets of clamping plates 907 to move towards the center of the slot 7. Because the clamping plates 907 have an arc-shaped structure and anti-slip serrations on their inner surfaces, they can precisely fit against the outer surface of the motor drive shaft, increasing clamping friction and enabling rapid and secure clamping of the mold and the motor drive shaft. This prevents relative slippage during centrifugal rotation and ensures rotational stability.

[0023] like Figure 1 , Figure 3 and Figure 6 As shown, the fixing block 5 is fixedly installed on the bottom outer surface of the fixing disk 4, and the bottom of the fixing disk 4 is equipped with an auxiliary component 10 for auxiliary support. The auxiliary component 10 includes an upper limit plate 1001, a guide block 1002, a first telescopic rod 1003, and a second telescopic rod 1004. The guide block 1002 is slidably installed inside the upper limit plate 1001. The bottom of the guide block 1002 is provided with the first telescopic rod 1003, and the second telescopic rod 1004 is slidably installed inside the first telescopic rod 1003. The first telescopic rod 1003 and the second telescopic rod 1004 are fixed by bolts. The auxiliary component 10 also includes a lower limit plate 1005 and a mounting plate 1006. The bottom of the second telescopic rod 1004 is slidably installed with the lower limit plate 1005. The outer surface of the lower limit plate 1005 is annularly provided with the mounting plate 1006. The upper limit plate 1001 and the lower limit plate 1005 have the same diameter, and the upper limit plate 1001... Both the upper limit plate 1001 and the lower limit plate 1005 have annular structures. The upper limit plate 1001 of the auxiliary component 10 is integrated with the bottom outer surface of the fixed plate 4 and is coaxially set with the fixed plate 4. The guide block 1002, which is slidably installed inside the upper limit plate 1001, can be adjusted in position according to the installation requirements of the mold. The telescopic rod 1003 and telescopic rod 1004 at the bottom of the guide block 1002 can be adjusted in length by sliding. After being adjusted to a suitable height, they are fixed by bolts, thereby driving the lower limit plate 1005 to keep parallel with the upper limit plate 1001. Since the upper limit plate 1001 and the lower limit plate 1005 have the same diameter and are both annular structures, they can form a uniform annular support for the bottom of the mold. At the same time, the mounting plate 1006, which is annularly set on the outer surface of the lower limit plate 1005, can be fixed to the ground or equipment base, further improving the support stability of the mold, avoiding shaking during centrifugal rotation, and ensuring the casting forming accuracy.

[0024] In summary, as Figures 1-6As shown, this centrifugal casting mold for bimetallic wear-resistant tubes is used by aligning the mold body 1 with the mounting plate 3 at the bottom. The mounting plate 3 is then securely fixed to the fixing plate 4 using bolts, ensuring a tight and secure connection to provide stable support for subsequent centrifugal rotation. Next, the cover 2 is bolted to the connecting plate 8 at the top of the mold body 1, completing the sealed assembly of the mold body 1. Because the mold body 1 has a hollow structure, the sealed interior forms a cavity for casting the bimetallic wear-resistant tube. Furthermore, the mold body 1 and the slot 7 in the middle of the fixing plate 4 are coaxially aligned, ensuring uniform force distribution within the cavity during subsequent centrifugal rotation and preventing defects such as uneven wall thickness or eccentricity in the casting. Finally, the mold is fixed to the motor drive shaft. This process is achieved through a continuous... The connection component 9 is implemented by symmetrically distributing two sets of connecting plates 902, inclined grooves 903, and other structures at both ends of the assembly plate 901. The hydraulic rod 6 is activated, its end fixed to the fixing block 5 at the bottom of the fixing plate 4. When the hydraulic rod 6 extends or retracts, it drives the assembly plate 901 to move horizontally. As the assembly plate 901 moves, the connecting plates 902 at both ends move synchronously, causing the slider 904 within the inclined groove 903 inside the connecting plate 902 to slide along the inclined groove 903. The slider 904 drives the connecting plate 905 to rotate around the rotating shaft 908, and the connecting block 906 at the top of the connecting plate 905 moves in conjunction, ultimately driving the two sets of clamping plates 907 to move towards the center of the slot 7. Because the clamping plates 907 have an arc-shaped structure and anti-slip teeth on their inner surface, they can engage with the motor drive shaft. The precise fit of the outer surface increases clamping friction, enabling rapid and secure clamping of the mold and the motor drive shaft. This prevents relative slippage during centrifugal rotation, ensuring rotational stability. After the mold is fixed, auxiliary component 10 provides further support and horizontal calibration, ensuring overall mold stability during centrifugal casting. The upper limit plate 1001 of auxiliary component 10 is integrated with the bottom outer surface of the fixed plate 4 and is coaxially arranged with the fixed plate 4. The guide block 1002, which is slidably installed inside the upper limit plate 1001, can be adjusted in position according to the mold installation requirements. The telescopic rod 1003 and telescopic rod 1004 at the bottom of the guide block 1002 can be adjusted in length by sliding. After being adjusted to a suitable height, they are fixed with bolts, thereby driving the lower limit plate 1. The upper limit plate 1005 is parallel to the lower limit plate 1001. Since the upper limit plate 1001 and the lower limit plate 1005 have the same diameter and are both annular structures, they can form a uniform annular support for the bottom of the mold. At the same time, the mounting plate 1006, which is annularly set on the outer surface of the lower limit plate 1005, can be fixed to the ground or equipment base, further improving the support stability of the mold, avoiding shaking during centrifugal rotation, and ensuring the casting accuracy. After the above preparations are completed, the motor is started. The motor drive shaft drives the mold to rotate at high speed around the coaxial center. The centrifugal force is used to realize the casting of the bimetallic wear-resistant tube. During casting, the bimetallic raw materials are injected into the hollow cavity of the mold body 1 in proportion. Under the action of high-speed centrifugal force, the raw materials will be evenly distributed along the inner wall of the mold cavity.The outer layer of raw material and the inner layer of wear-resistant raw material are tightly bonded to form a bimetallic wear-resistant pipe blank with uniform wall thickness and tight bonding. The outer carbon steel base layer is poured first, followed by the inner wear-resistant alloy layer. The poured carbon steel molten material is thrown against the mold wall to form the outer steel pipe blank. After the outer layer is semi-solidified, high-chromium cast iron and other wear-resistant alloys are poured in. The alloy molten material is thrown against the semi-solidified carbon steel inner wall by centrifugal force. The two layers are metallurgically bonded to form a composite pipe with an outer carbon steel and an inner wear-resistant material. After casting, the motor is turned off, and after the mold and the internal blank have cooled to a suitable temperature, demolding is performed. First, the fixing bolts of telescopic rod 1003 and telescopic rod 1004 in auxiliary component 10 are loosened, and the telescopic... The length of the rod is adjusted to separate the lower limit plate 1005 from the ground or equipment base, releasing the auxiliary support. Then, the hydraulic rod 6 is controlled to extend and retract in the reverse direction, causing the collecting plate 901 to move in the reverse direction. The slider 904 slides in the reverse direction along the inclined groove 903, and the connecting plate 905 rotates in the reverse direction around the rotating shaft 908. The two sets of clamping plates 907 separate to the sides, releasing the clamping of the motor drive shaft and achieving separation of the mold from the drive shaft. Finally, the fixing bolts between the cover 2 and the connecting plate 8, and between the mounting plate 3 and the fixing plate 4 are loosened. The cover 2 is disassembled, and the mold body 1 is separated from the fixing plate 4. The formed bimetallic wear-resistant tube can then be removed from the hollow cavity of the mold body 1, completing the entire centrifugal casting process.

[0025] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A centrifugal casting mold for bimetallic wear-resistant tubes, comprising a mold body (1) and a fixing block (5), characterized in that: The bottom of the mold body (1) is equipped with an installation plate (3), and a fixing plate (4) is fixed to the bottom of the installation plate (3) by bolts. The fixing plate (4) has a slot (7) in the middle, and a connecting component (9) for assisting in fixing to the motor drive shaft is installed on the outside of the slot (7). The connecting component (9) includes a collection plate (901), a connecting plate (902), a sloping groove (903), a slider (904), a connecting plate (905), a connecting block (906), and a clamping plate (907). The two ends of the collection plate (901) are equipped with connecting plates (902). The inside of the connecting plate (902) is provided with a sloping groove (903), and a slider (904) is slidably installed inside the sloping groove (903). A connecting plate (905) is provided on one side of the outside of the slider (904), and a rotating shaft (908) is rotatably installed inside the connecting plate (905). A connecting block (906) is rotatably provided on the top of the assembly plate (905), and a clamping plate (907) is installed on one side of the outer surface of the connecting block (906). A hydraulic rod (6) is provided on one side of the outer surface of the assembly plate (901). A fixing block (5) is installed at the end of the hydraulic rod (6). The fixing block (5) is fixedly provided on the bottom outer surface of the fixing plate (4). An auxiliary component (10) for auxiliary support is installed at the bottom of the fixing plate (4). Two sets of the connecting plate (902), inclined groove (903), slider (904), connecting plate (905), connecting block (906), clamping plate (907) and rotating shaft (908) are provided. The two sets of the connecting plate (902), inclined groove (903), slider (904), connecting plate (905), connecting block (906), clamping plate (907) and rotating shaft (908) have the same structure and are symmetrically distributed at both ends of the assembly plate (901).

2. The bimetallic wear-resistant tube centrifugal casting mold according to claim 1, characterized in that: The auxiliary component (10) includes an upper limit plate (1001), a guide block (1002), a first telescopic rod (1003) and a second telescopic rod (1004). The guide block (1002) is slidably installed inside the upper limit plate (1001). The first telescopic rod (1003) is provided at the bottom of the guide block (1002). The second telescopic rod (1004) is slidably installed inside the first telescopic rod (1003). The first telescopic rod (1003) and the second telescopic rod (1004) are fixed by bolts.

3. The centrifugal casting mold for bimetallic wear-resistant tubes according to claim 2, characterized in that: The auxiliary component (10) also includes a lower limit plate (1005) and a mounting plate (1006), and the lower limit plate (1005) is slidably installed on the bottom of the telescopic rod (1004), and the mounting plate (1006) is arranged in a ring on the outer surface of the lower limit plate (1005).

4. The centrifugal casting mold for bimetallic wear-resistant tubes according to claim 3, characterized in that: The upper limit plate (1001) and the lower limit plate (1005) have the same diameter, and both the upper limit plate (1001) and the lower limit plate (1005) have a ring structure.

5. The centrifugal casting mold for bimetallic wear-resistant tubes according to claim 1, characterized in that: The top of the mold body (1) is equipped with a connecting plate (8), and the top of the connecting plate (8) is fixed with a cover (2) by bolts.

6. The centrifugal casting mold for bimetallic wear-resistant tubes according to claim 1, characterized in that: The mold body (1) has a hollow structure, and the mold body (1) and the slot (7) are coaxially arranged.

7. The bimetallic wear-resistant tube centrifugal casting mold according to claim 2, characterized in that: The bottom outer surface of the fixed disk (4) is integrated with the upper limit disk (1001), and the upper limit disk (1001) and the fixed disk (4) are coaxially arranged.

8. The centrifugal casting mold for bimetallic wear-resistant tubes according to claim 1, characterized in that: The inner surface of the clamping plate (907) is provided with anti-slip serrations, and the clamping plate (907) has an arc-shaped structure.

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