Centrifugal casting equipment and casting method for a bimetallic semi-solid composite cast pipe

Abstract

The present invention relates to the technical field of centrifugal casting, and discloses a centrifugal casting device and a casting method for a bimetallic semi-solid composite cast pipe. The centrifugal casting device for the bimetallic semi-solid composite cast pipe includes a pipe mold, a bottom plate, a centrifuge body fixedly arranged on the bottom plate, and a driving mechanism. A plurality of driving rollers are arranged on the centrifuge body; through the arrangement of the horizontally arranged liquid storage cylinder, the liquid storage cylinder can directly extend into the interior of the pipe mold. With the arrangement of the transmission mechanism, during the movement of the liquid storage cylinder inside the pipe mold, the transmission mechanism can drive the liquid pushing plate to move through a push rod, so that the liquid pushing plate presses out the molten metal solution in the liquid storage cylinder from the liquid outlet, and drives the pipe mold to rotate through the driving rollers, so that the poured molten metal solution is evenly distributed on the inner wall of the pipe mold. Compared with the traditional fixed-point pouring of the molten metal solution, the molten metal solution can be distributed on the inner wall of the pipe mold faster, improving the casting efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of centrifugal casting, and specifically to a centrifugal casting device and a casting method for a bimetallic semi-solid composite cast pipe. Background Art

[0002] A bimetallic semi-solid composite cast pipe is a kind of pipe made by combining two different metal materials through a specific process. This kind of pipe combines the advantages of the two metals and has better comprehensive performance. The bimetallic semi-solid composite cast pipe can be produced by a centrifugal casting device.

[0003] Chinese Patent CN111531145B discloses a centrifuge for casting bimetallic pipes. The centrifuge includes a power device, a pouring device, a heating device, a spraying device, a water cooling device, a pipe pushing device and a pipe receiving device. The pouring device includes a fixed-point pouring intermediate frequency furnace located on the side of the tundish track. The melting weight is weighed by an electronic scale installed at the bottom of the intermediate frequency furnace and lifted by pouring hydraulic cylinders on both sides. The intermediate frequency furnace can rotate around the rotation axis below the furnace nozzle to achieve fixed-point pouring of the inner layer molten steel. The intermediate frequency furnace is placed on an intermediate frequency furnace trolley, and the intermediate frequency furnace trolley can move on an intermediate frequency furnace track perpendicular to the center line of the pipe mold. This invention is a single-station centrifuge, saving floor space. The fixed-point pouring of the inner layer molten steel by the intermediate frequency furnace saves smelting energy, liberates the overhead crane, and the pouring temperature and interval time of the inner layer molten steel are controlled more precisely, ensuring the qualification rate of the bimetallic cast steel pipe.

[0004] As shown in the above patent, for existing centrifugal casting equipment, generally, the molten metal liquid is directly poured into the pipe mold, and the rotation of the pipe mold is used to cool and form the molten metal liquid on the inner wall of the pipe mold. However, for some longer pipes, when the molten metal liquid is directly poured into the pipe mold, it takes a long time for the molten metal liquid to flow and distribute evenly in the pipe mold, especially for some molten metal liquids with poor fluidity, which reduces the casting efficiency of the cast pipe.

[0005] Therefore, it is necessary to provide a centrifugal casting device and a casting method for a bimetallic semi-solid composite cast pipe to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a centrifugal casting device and a casting method for a bimetallic semi-solid composite cast pipe. Compared with the traditional fixed-point pouring of molten metal solution, the molten metal solution can be distributed on the inner wall of the pipe mold faster, improving the casting efficiency.

[0007] The above technical object of the present invention is achieved through the following technical solutions: A centrifugal casting device for a bimetallic semi-solid composite cast pipe, comprising a pipe mold, a bottom plate, a centrifuge body fixedly arranged on the bottom plate, and a driving mechanism. A plurality of driving rollers are arranged on the centrifuge body. The pipe mold is arranged on the centrifuge body, and the driving rollers are in contact with the pipe mold. A driving frame is arranged on one side of the bottom plate away from the centrifuge body above. The driving mechanism is in transmission connection with the driving frame. A support rod is fixedly installed on one side of the driving frame close to the pipe mold. A support seat is fixedly installed at one end of the support rod away from the driving frame. A liquid storage cylinder is detachably installed on the support seat. A liquid outlet is opened on one side of the top end of the liquid storage cylinder away from the driving frame. A liquid pushing plate is slidably arranged in the liquid storage cylinder. A push rod is fixedly installed on one side of the liquid pushing plate away from the liquid outlet. The push rod penetrates through the side wall of the liquid storage cylinder. A transmission mechanism for driving the push rod to move is arranged on the support rod. Connecting boxes are fixedly installed on both sides of the support seat. A plurality of nozzles are communicated and arranged at the bottom end of the connecting box. A conveying pipe is communicated and arranged on the connecting box.

[0008] The further setting of the present invention is: A groove is opened on one side of the top end of the support rod away from the driving frame. The push rod is arranged in the groove. A notch is opened at the top of the support seat. The push rod penetrates through the notch. Two limiting blocks are fixedly installed on both sides of the top of the support seat. Positioning seats are fixedly installed on both sides of the liquid storage cylinder. The positioning seats are arranged between the two limiting blocks.

[0009] The further setting of the present invention is: The driving mechanism includes a first guide rail, a first sliding seat, a first screw rod, and a motor. The first guide rail is fixedly installed at the top end of the bottom plate. The first sliding seat is slidably installed inside the first guide rail. A first screw rod is rotatably installed inside the first guide rail. A motor in transmission connection with the first screw rod is fixedly installed on the first guide rail. Through grooves are opened on both sides of the first guide rail. Both sides of the first sliding seat extend out through the through grooves. The bottom of the driving frame is fixedly connected to both sides of the first sliding seat.

[0010] A further setting of the present invention is that the transmission mechanism includes a push block, a second guide rail, a second sliding seat and a second screw rod. The second guide rail is fixedly installed at the bottom end of the support rod. A second sliding seat is slidably installed inside the second guide rail. The top end of the second sliding seat extends into the groove, and the second sliding seat is slidably matched with the support rod. A push block is fixedly installed at the top end of the second sliding seat. The push block is slidably arranged in the groove. One end of the push rod away from the liquid pushing disc is in contact with the push block. A second screw rod is rotatably installed inside the second guide rail. One end of the second screw rod away from the support seat extends out of the second guide rail, and a first rotating shaft is fixedly installed at the end of the second screw rod extending out of the second guide rail. A first bevel gear is fixedly installed at the end of the first rotating shaft away from the second guide rail. A connecting seat is fixedly installed on one side of the bottom wall of the support rod away from the support seat. A second rotating shaft is rotatably installed on the connecting seat. A second bevel gear is fixedly sleeved at one end of the second rotating shaft. The second bevel gear meshes with the first bevel gear. A first gear is fixedly sleeved at the other end of the second rotating shaft. An installation frame is fixedly installed at the top end of the first guide rail. A first rack is fixedly installed at the top end of the installation frame. The first gear is adapted to the first rack.

[0011] A further setting of the present invention is that a first lifting buckle is fixedly arranged at the top end of the pipe mold, and a second lifting buckle is fixedly arranged at the top end of the liquid storage cylinder.

[0012] A further setting of the present invention is that drainage grooves are arranged on both sides of the liquid outlet, and the drainage grooves are fixedly connected with the liquid storage cylinder.

[0013] A further setting of the present invention is that a sealing cover is slidably installed at the top end of the support rod. A sealing block is fixedly installed at one end of the sealing cover close to the support seat. The sealing block is adapted to the notch on the support seat. A second rack is fixedly installed at the bottom end of the sealing cover. A second gear is rotatably installed on the side wall of the support rod. The second gear meshes with the second rack. A third rack is meshed below the second gear. The third rack is fixedly connected with the installation frame through a connecting plate.

[0014] A further setting of the present invention is that two limiting seats are fixedly installed at the top end of the centrifuge body. A gap is arranged inside the limiting seats. Two positioning rings are fixedly arranged on the outer wall of the pipe mold. The positioning rings are arranged in the gap inside the limiting seats.

[0015] A further setting of the present invention is that sealing rings are arranged at both ends of the pipe mold. The sealing rings are fixedly connected with the pipe mold through connecting bolts. A through hole is arranged in the middle of the sealing ring.

[0016] A casting method for a bimetallic semi-solid composite cast pipe adopts the above-mentioned centrifugal casting equipment for a bimetallic semi-solid composite cast pipe, and includes the following steps:

[0017] S1. The preheated tube mold is mounted on the centrifuge body, and the driving frame drives the support rod to move so that the connecting box moves into the tube mold. During the movement of the connecting box inside the tube mold, the heat-resistant protective coating is transported through the delivery pipe and sprayed out through the nozzle. In coordination with the rotation of the tube mold, the heat-resistant protective coating is distributed on the inner wall of the tube mold, and then the connecting box is removed from the tube mold;

[0018] S2. A liquid storage cylinder containing a first molten metal solution is installed on a support seat, and then the support seat is driven by a driving frame to move into the tube mold. When the liquid storage cylinder moves in the tube mold, the push rod is driven to move by a transmission mechanism, so that the liquid push plate presses out the first molten metal solution in the liquid storage cylinder, and the tube mold is driven to rotate by a driving roller, so that the poured first molten metal solution is evenly distributed on the inner wall of the tube mold;

[0019] S3. After the first molten metal solution is gradually cooled and formed, protective slag is transported through another delivery pipe to spray the protective slag onto the inner wall of the formed cast pipe through a nozzle. After the liquid storage cylinder is removed, the liquid storage cylinder filled with the second molten metal solution is installed on the support seat to pour the second layer of molten metal solution. After the second layer of molten metal solution is cooled and formed, the casting of the bimetallic semi-solid composite cast pipe can be completed.

[0020] In summary, the present invention has the following beneficial effects: the present invention arranges the liquid storage cylinder laterally so that the liquid storage cylinder can be directly extended into the interior of the tube mold, and cooperates with the arrangement of the transmission mechanism so that during the movement of the liquid storage cylinder inside the tube mold, the transmission mechanism can drive the liquid pushing plate to move through the push rod, so that the liquid pushing plate presses the molten metal solution in the liquid storage cylinder out of the liquid outlet, and drives the tube mold to rotate through the driving roller, so that the poured molten metal solution is evenly distributed on the inner wall of the tube mold. Compared with the traditional fixed-point pouring of the molten metal solution, the molten metal solution can be distributed on the inner wall of the tube mold more quickly, thereby improving the casting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the centrifuge body of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the pipe mold of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the driving mechanism of the present invention;

[0025] Figure 5 It is a schematic cross-sectional structural diagram of the liquid storage cylinder of the present invention;

[0026] Figure 6One of the schematic structural diagrams of the support rod, support seat and liquid storage cylinder of the present invention;

[0027] Figure 7 For the present invention Figure 6 The enlarged structural diagram at position A;

[0028] Figure 8 Another schematic structural diagram of the support rod, support seat and liquid storage cylinder of the present invention;

[0029] Figure 9 The schematic structural diagram of the transmission mechanism of the present invention;

[0030] Figure 10 The schematic structural diagram of the communication box and the nozzle of the present invention.

[0031] In the figure: 1, bottom plate; 2, centrifuge body; 3, driving roller; 4, limiting seat; 5, pipe mold; 501, positioning ring; 502, first lifting buckle; 503, sealing ring; 504, connecting bolt; 6, driving frame; 7, driving mechanism; 701, first guide rail; 702, first sliding seat; 703, first screw rod; 704, motor; 8, support rod; 801, groove; 9, support seat; 901, notch; 10, liquid storage cylinder; 1001, second lifting buckle; 1002, positioning seat; 1003, liquid outlet; 1004, drainage groove; 11, pushing block; 12, second guide rail; 13, second sliding seat; 14, second screw rod; 15, first rotating shaft; 16, first bevel gear; 17, second bevel gear; 18, second rotating shaft; 19, first gear; 20, connecting seat; 21, liquid pushing disc; 22, push rod; 23, cover; 2301, sealing block; 24, second rack; 25, second gear; 26, third rack; 27, connecting plate; 28, communication box; 29, nozzle; 30, conveying pipe; 31, first rack; 32, mounting frame; 33, limiting block. Detailed implementation manners

[0032] The following will further describe the present invention in conjunction with the drawings in the embodiments of the present invention.

[0033] Please refer to Figures 1 to 7 and Figure 10, in the embodiment of the present invention, a centrifugal casting device for a bimetallic semi-solid composite cast pipe includes a pipe mold 5, a bottom plate 1, a centrifuge body 2 fixedly arranged on the bottom plate 1, and a driving mechanism 7. A plurality of driving rollers 3 are arranged on the centrifuge body 2. The driving rollers 3 are an inherent structure of the centrifuge body 2. When the centrifuge body 2 works, the plurality of driving rollers 3 can rotate synchronously. The pipe mold 5 is arranged on the centrifuge body 2. The driving rollers 3 are in contact with the pipe mold 5. A driving frame 6 is arranged on one side of the bottom plate 1 away from the centrifuge body 2. The driving mechanism 7 is in transmission connection with the driving frame 6, so that the driving frame 6 can move. A support rod 8 is fixedly installed on one side of the driving frame 6 close to the pipe mold 5. A support seat 9 is fixedly installed at one end of the support rod 8 away from the driving frame 6. A liquid storage cylinder 10 is detachably installed on the support seat 9. An outlet 1003 is opened on one side of the top end of the liquid storage cylinder 10 away from the driving frame 6. A liquid pushing plate 21 is slidably arranged in the liquid storage cylinder 10. The outer peripheral wall of the liquid pushing plate 21 is attached to the inner peripheral wall of the liquid storage cylinder 10. A push rod 22 is fixedly installed on one side of the liquid pushing plate 21 away from the outlet 1003. The push rod 22 penetrates through the side wall of the liquid storage cylinder 10. A transmission mechanism for driving the push rod 22 to move is arranged on the support rod 8. Connecting boxes 28 are fixedly installed on both sides of the support seat 9. A plurality of spray heads 29 are communicated and arranged at the bottom end of the connecting box 28. A delivery pipe 30 is communicated and arranged on the connecting box 28; heat-resistant protective coating and protective slag are respectively input through the two delivery pipes 30. Specifically, during use, the preheated pipe mold 5 is installed on the centrifuge body 2. The support rod 8 is driven to move by the driving frame 6 so that the connecting box 28 moves into the pipe mold 5. During the movement of the connecting box 28 inside the pipe mold 5, the heat-resistant protective coating is conveyed through the delivery pipe 30 and sprayed out through the spray heads 29. With the rotation of the pipe mold 5, the heat-resistant protective coating is distributed on the inner wall of the pipe mold 5. Then the connecting box 28 is removed from the pipe mold 5. The liquid storage cylinder 10 filled with the first molten metal solution is installed on the support seat 9. Then the support seat 9 is driven to move into the pipe mold 5 by the driving frame 6. When the liquid storage cylinder 10 moves inside the pipe mold 5, the push rod 22 is driven to move by the transmission mechanism, so that the liquid pushing plate 21 presses out the first molten metal solution in the liquid storage cylinder 10. The pipe mold 5 is driven to rotate by the driving rollers 3, so that the poured first molten metal solution is evenly distributed on the inner wall of the pipe mold 5. After the first molten metal solution gradually cools and forms, the protective slag is conveyed through the other delivery pipe 30 to spray the protective slag on the inner wall of the formed cast pipe through the spray heads 29. After the liquid storage cylinder 10 is removed, the liquid storage cylinder 10 filled with the second molten metal solution is installed on the support seat 9 to pour the second layer of molten metal solution. After the second layer of molten metal solution cools and forms, the casting of the bimetallic semi-solid composite cast pipe can be completed;

[0034] The present invention arranges the liquid storage cylinder 10 in a transverse manner so that the liquid storage cylinder 10 can be directly extended into the interior of the tube mold 5. In conjunction with the arrangement of the transmission mechanism, during the movement of the liquid storage cylinder 10 in the tube mold 5, the transmission mechanism can drive the liquid pushing plate 21 to move through the push rod 22, so that the liquid pushing plate 21 presses the molten metal solution in the liquid storage cylinder 10 out of the liquid outlet 1003, and drives the tube mold 5 to rotate through the driving roller 3, so that the poured molten metal solution is evenly distributed on the inner wall of the tube mold 5. Compared with the traditional fixed-point pouring of the molten metal solution, the molten metal solution can be distributed on the inner wall of the tube mold 5 more quickly, thereby improving the casting efficiency.

[0035] In this embodiment, preferably, two limit seats 4 are fixedly installed on the top of the centrifuge body 2, and a gap is arranged on the inner side of the limit seat 4. Two positioning rings 501 are fixedly arranged on the outer wall of the tube mold 5, and the positioning rings 501 are arranged in the gap on the inner side of the limit seat 4, so as to limit the tube mold 5 and prevent the tube mold 5 from shifting when rotating.

[0036] In this embodiment, preferably, sealing rings 503 are provided at both ends of the pipe mold 5, and the sealing rings 503 are fixedly connected to the pipe mold 5 by connecting bolts 504. A through hole is provided in the middle of the sealing ring 503; the liquid storage cylinder 10 can be extended into the pipe mold 5 through the through hole. After the casting of the cast pipe is completed, the sealing ring 503 can be removed and then the cast pipe can be taken out.

[0037] In this embodiment, preferably, the driving mechanism 7 includes a first guide rail 701, a first slide 702, a first screw 703 and a motor 704, the first guide rail 701 is fixedly installed on the top of the base plate 1, the first slide 702 is slidably installed inside the first guide rail 701, the first guide rail 701 is rotatably installed with a first screw 703 inside, the first guide rail 701 is fixedly installed with a motor 704 that is transmission-connected to the first screw 703, through grooves are provided on both sides of the first guide rail 701, both sides of the first slide 702 extend through the through grooves, and the bottom of the driving frame 6 is fixedly connected to both sides of the first slide 702; by providing through grooves on both sides of the first guide rail 701 for the first slide 702 to extend out, dust and impurities can be effectively prevented from entering the first guide rail 701, the first screw 703 can be driven to rotate by the motor 704, and when the first screw 703 rotates, it can drive the first slide 702 to move, thereby driving the driving frame 6 to move.

[0038] In this embodiment, preferably, liquid discharge grooves 1004 are arranged on both sides of the liquid outlet 1003. The liquid discharge grooves 1004 are fixedly connected to the liquid storage cylinder 10. Electric heating wires are arranged in the liquid discharge grooves 1004 to heat the liquid discharge grooves 1004, preventing the molten metal solution from solidifying on the liquid discharge grooves 1004. The molten metal solution overflowing through the liquid outlet 1003 can flow out through the liquid discharge grooves 1004 and flow into the pipe mold 5, thereby preventing the metal from easily remaining on the outer wall of the liquid storage cylinder 10.

[0039] In this embodiment, preferably, a first lifting hook 502 is fixedly arranged at the top end of the pipe mold 5, and a second lifting hook 1001 is fixedly arranged at the top end of the liquid storage cylinder 10; the pipe mold 5 can be lifted by the lifting tool through the first lifting hook 502 to facilitate the replacement of the pipe mold 5 after pouring is completed, and the liquid storage cylinder 10 can be lifted by the lifting tool through the second lifting hook 1001 to facilitate the replacement of the liquid storage cylinder 10.

[0040] Please refer to Figures 5 to 9 , in the embodiment of the present invention, a groove 801 is formed on one side of the top end of the support rod 8 away from the driving frame 6. The push rod 22 is arranged in the groove 801. A notch 901 is formed at the top of the support seat 9. The push rod 22 penetrates through the notch 901. Two limiting blocks 33 are fixedly installed on both sides of the top of the support seat 9. Positioning seats 1002 are fixedly installed on both sides of the liquid storage cylinder 10. The positioning seats 1002 are arranged between the two limiting blocks 33; the liquid storage cylinder 10 is naturally placed on the support seat 9. When the liquid storage cylinder 10 is placed on the support seat 9, the positioning seats 1002 are arranged between the two limiting blocks 33 to position the liquid storage cylinder 10, thereby realizing the detachable connection between the liquid storage cylinder 10 and the support seat 9.

[0041] In this embodiment, preferably, the transmission mechanism includes a push block 11, a second guide rail 12, a second sliding seat 13, and a second screw rod 14. The second guide rail 12 is fixedly installed at the bottom end of the support rod 8. A second sliding seat 13 is slidably installed inside the second guide rail 12. The top end of the second sliding seat 13 extends into the groove 801, and the second sliding seat 13 is slidably engaged with the support rod 8. A push block 11 is fixedly installed at the top end of the second sliding seat 13. The push block 11 is slidably arranged in the groove 801. One end of the push rod 22 away from the liquid pushing disc 21 is in contact with the push block 11. A second screw rod 14 is rotatably installed inside the second guide rail 12. One end of the second screw rod 14 away from the support seat 9 extends out of the second guide rail 12, and a first rotating shaft 15 is fixedly installed at the end of the second screw rod 14 extending out of the second guide rail 12. A first bevel gear 16 is fixedly installed at one end of the first rotating shaft 15 away from the second guide rail 12. A connecting seat 20 is fixedly installed on one side of the bottom wall of the support rod 8 away from the support seat 9. A second rotating shaft 18 is rotatably installed on the connecting seat 20. A second bevel gear 17 is fixedly sleeved at one end of the second rotating shaft 18. The second bevel gear 17 is meshed with the first bevel gear 16. A first gear 19 is fixedly sleeved at the other end of the second rotating shaft 18. An installation frame 32 is fixedly installed at the top end of the first guide rail 701. A first rack 31 is fixedly installed at the top end of the installation frame 32. The first gear 19 is adapted to the first rack 31. When the driving frame 6 drives the support rod 8 to move towards the pipe mold 5, the first gear 19 moves towards the first rack 31. When the liquid storage cylinder 10 just enters the pipe mold 5, the first gear 19 is meshed with the first rack 31. As the support rod 8 continues to move, the first rack 31 drives the first gear 19 to rotate. When the first gear 19 rotates, it drives the second rotating shaft 18 to rotate, thereby driving the second bevel gear 17 to rotate. When the second bevel gear 17 rotates, it drives the first bevel gear 16 to rotate. When the first bevel gear 16 rotates, it drives the second screw rod 14 to rotate through the first rotating shaft 15. When the second screw rod 14 rotates, it drives the second sliding seat 13 to move, thereby driving the push block 11 to move towards the pipe mold 5, so that the push block 11 pushes the push rod 22 to move, and the liquid pushing disc 21 gradually pushes out the molten metal solution in the liquid storage cylinder 10. Through the setting of the above structure, after the liquid storage cylinder 10 enters the pipe mold 5, the molten metal solution in the liquid storage cylinder 10 can uniformly overflow from the liquid outlet 1003 as the liquid storage cylinder 10 moves, ensuring the uniformity of the output of the molten metal solution.

[0042] In this embodiment, preferably, a cover 23 is slidably installed at the top of the support rod 8, and the movement of the cover 23 has damping. A sealing block 2301 is fixedly installed at one end of the cover 23 close to the support base 9, and the sealing block 2301 is adapted to the notch 901 on the support base 9. A second rack 24 is fixedly installed at the bottom end of the cover 23. A second gear 25 is rotatably installed on the side wall of the support rod 8, and the second gear 25 meshes with the second rack 24. A third rack 26 is meshed below the second gear 25, and the third rack 26 is fixedly connected to the mounting frame 32 through a connecting plate 27. When the liquid storage cylinder 10 does not enter the pipe mold 5, the top opening of the groove 801 is in an open state, so as to facilitate putting the push rod 22 into the groove 801 when installing the liquid storage cylinder 10. When the support rod 8 drives the liquid storage cylinder 10 to move into the pipe mold 5, as the second gear 25 moves, the third rack 26 drives the second gear 25 to rotate. When the second gear 25 rotates, it drives the second rack 24 to move, thereby driving the cover 23 to move to close the groove 801, so as to avoid debris generated during pouring from entering the groove 801 when the support rod 8 enters the inside of the pipe mold 5. The setting of the above structure enables the cover 23 to automatically close the groove 801 when the support rod 8 enters the pipe mold 5, and when the support rod 8 moves out of the pipe mold 5, the cover 23 can automatically move away to make the top opening of the groove 801 open, so as to facilitate replacing and installing the liquid storage cylinder 10.

[0043] The present invention also discloses a centrifugal casting device and a casting method for a bimetallic semi-solid composite cast pipe, including the following steps:

[0044] S1. Install the preheated pipe mold 5 on the centrifuge body 2, and drive the support rod 8 to move through the drive frame 6 so that the communication box 28 moves into the inside of the pipe mold 5. During the movement of the communication box 28 inside the pipe mold 5, a heat-resistant protective coating is conveyed through the conveying pipe 30 and sprayed out through the spray head 29. In cooperation with the rotation of the pipe mold 5, the heat-resistant protective coating is distributed on the inner wall of the pipe mold 5, and then the communication box 28 is moved out of the pipe mold 5;

[0045] S2. Install the liquid storage cylinder 10 filled with the first molten metal solution on the support base 9, and then drive the support base 9 to move into the pipe mold 5 through the drive frame 6. When the liquid storage cylinder 10 moves inside the pipe mold 5, the push rod 22 is driven to move through the transmission mechanism, so that the liquid pushing disc 21 presses out the first molten metal solution in the liquid storage cylinder 10, and the pipe mold 5 is driven to rotate through the drive roller 3, so that the poured first molten metal solution is evenly distributed on the inner wall of the pipe mold 5;

[0046] S3. After the first molten metal solution is gradually cooled and formed, the protective slag is conveyed through another conveying pipe 30 so that the protective slag is sprayed on the inner wall of the formed cast pipe through the nozzle 29. After the liquid storage cylinder 10 is removed, the liquid storage cylinder 10 containing the second molten metal solution is installed on the support seat 9 to pour the second layer of molten metal solution. After the second layer of molten metal solution is cooled and formed, the casting of the bimetallic semi-solid composite cast pipe can be completed.

[0047] The above is only the preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made according to the structures, features and principles described in the scope of the present invention patent application are included in the scope of the present invention patent application.

Claims

1. A centrifugal casting device for a bimetallic semi-solid composite cast pipe, comprising a pipe mold (5), a bottom plate (1), a centrifuge body (2) fixedly arranged on the bottom plate (1), and a driving mechanism (7), wherein a plurality of driving rollers (3) are arranged on the centrifuge body (2), and characterized in that: The tube mold (5) is arranged on the centrifuge body (2), the driving roller (3) is in contact with the tube mold (5), a driving frame (6) is arranged on the side of the bottom plate (1) away from the centrifuge body (2), the driving mechanism (7) is drivingly connected to the driving frame (6), a support rod (8) is fixedly mounted on the side of the driving frame (6) close to the tube mold (5), a support seat (9) is fixedly mounted on the end of the support rod (8) away from the driving frame (6), a liquid storage cylinder (10) is detachably mounted on the support seat (9), and a top end of the liquid storage cylinder (10) away from the driving frame (6) is fixedly mounted on the side of the driving frame (6). A liquid outlet (1003) is provided on the side of the liquid storage cylinder (10), a liquid pushing plate (21) is slidably arranged in the liquid storage cylinder (10), a push rod (22) is fixedly installed on the side of the liquid pushing plate (21) away from the liquid outlet (1003), the push rod (22) passes through the side wall of the liquid storage cylinder (10), a transmission mechanism for driving the push rod (22) to move is arranged on the support rod (8), a connecting box (28) is fixedly installed on both sides of the support seat (9), a plurality of nozzles (29) are connected to the bottom end of the connecting box (28), and a delivery pipe (30) is connected to the connecting box (28); A groove (801) is formed on a side of the top of the support rod (8) away from the driving frame (6), the push rod (22) is arranged in the groove (801), a notch (901) is formed on the top of the support seat (9), the push rod (22) passes through the notch (901), two limit blocks (33) are fixedly mounted on both sides of the top of the support seat (9), and a positioning seat (1002) is fixedly mounted on both sides of the liquid storage cylinder (10), and the positioning seat (1002) is arranged between the two limit blocks (33); The driving mechanism (7) comprises a first guide rail (701), a first slide seat (702), a first screw rod (703) and a motor (704); the first guide rail (701) is fixedly mounted on the top of the bottom plate (1); the first slide seat (702) is slidably mounted inside the first guide rail (701); a first screw rod (703) is rotatably mounted inside the first guide rail (701); a motor (704) drivingly connected to the first screw rod (703) is fixedly mounted on the first guide rail (701); through grooves are provided on both sides of the first guide rail (701); both sides of the first slide seat (702) extend through the through grooves; and the bottom of the driving frame (6) is fixedly connected to both sides of the first slide seat (702); The transmission mechanism comprises a push block (11), a second guide rail (12), a second slide seat (13) and a second screw rod (14); the second guide rail (12) is fixedly mounted on the bottom end of the support rod (8); the second slide seat (13) is slidably mounted inside the second guide rail (12); the top end of the second slide seat (13) extends into the groove (801), and the second slide seat (13) and the support rod (8) are slidably matched; the top end of the second slide seat (13) is fixedly mounted on the push block (11); the push block (11) is slidably arranged in the groove (801); the end of the push rod (22) away from the liquid push plate (21) contacts the push block (11); the second screw rod (14) is rotatably mounted inside the second guide rail (12); the end of the second screw rod (14) away from the support seat (9) extends out of the second guide rail (12), and the second screw rod ( 14) A first rotating shaft (15) is fixedly mounted on one end extending out from the second guide rail (12), a first bevel gear (16) is fixedly mounted on one end of the first rotating shaft (15) away from the second guide rail (12), a connecting seat (20) is fixedly mounted on the side of the bottom wall of the support rod (8) away from the support seat (9), a second rotating shaft (18) is rotatably mounted on the connecting seat (20), a second bevel gear (17) is fixedly mounted on one end of the second rotating shaft (18), the second bevel gear (17) is meshed with the first bevel gear (16), a first gear (19) is fixedly mounted on the other end of the second rotating shaft (18), a mounting frame (32) is fixedly mounted on the top end of the first guide rail (701), a first rack (31) is fixedly mounted on the top end of the mounting frame (32), and the first gear (19) is matched with the first rack (31).

2. The centrifugal casting equipment for a bimetallic semi-solid composite casting pipe according to claim 1, characterized in that: A first hanging buckle (502) is fixedly provided at the top end of the tube mold (5), and a second hanging buckle (1001) is fixedly provided at the top end of the liquid storage cylinder (10).

3. The centrifugal casting equipment of a bimetallic semi-solid composite casting pipe according to claim 1, characterized in that: Liquid drainage grooves (1004) are provided on both sides of the liquid outlet (1003), and the liquid drainage grooves (1004) are fixedly connected to the liquid storage cylinder (10).

4. The centrifugal casting equipment for a bimetallic semi-solid composite casting pipe according to claim 1, characterized in that: A cover (23) is slidably mounted on the top end of the support rod (8); a sealing block (2301) is fixedly mounted on one end of the cover (23) close to the support seat (9); the sealing block (2301) is matched with the notch (901) on the support seat (9); a second rack (24) is fixedly mounted on the bottom end of the cover (23); a second gear (25) is rotatably mounted on the side wall of the support rod (8); the second gear (25) is meshed with the second rack (24); a third rack (26) is meshed below the second gear (25); and the third rack (26) is fixedly connected to the mounting frame (32) via a connecting plate (27).

5. The centrifugal casting equipment for a bimetallic semi-solid composite casting pipe according to claim 1, characterized in that: Two limit seats (4) are fixedly mounted on the top of the centrifuge body (2), a gap is provided inside the limit seats (4), and two positioning rings (501) are fixedly mounted on the outer wall of the tube mold (5), the positioning rings (501) are arranged in the gap inside the limit seats (4).

6. The centrifugal casting equipment for a bimetallic semi-solid composite casting pipe according to claim 1, characterized in that: Both ends of the pipe mold (5) are provided with sealing rings (503); the sealing rings (503) are fixedly connected to the pipe mold (5) via connecting bolts (504); and a through hole is provided in the middle of the sealing ring (503).

7. A casting method of a bimetallic semi-solid composite cast pipe, using a centrifugal casting device of a bimetallic semi-solid composite cast pipe according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. The preheated tube mold (5) is mounted on the centrifuge body (2), and the driving frame (6) drives the support rod (8) to move so that the connecting box (28) moves into the tube mold (5). During the movement of the connecting box (28) inside the tube mold (5), the heat-resistant protective coating is transported through the transport pipe (30) and sprayed out through the nozzle (29). In coordination with the rotation of the tube mold (5), the heat-resistant protective coating is distributed on the inner wall of the tube mold (5), and then the connecting box (28) is removed from the tube mold (5); S2. A liquid storage cylinder (10) containing a first molten metal solution is mounted on a support seat (9), and the support seat (9) is driven by a driving frame (6) to move into the tube mold (5). When the liquid storage cylinder (10) moves in the tube mold (5), the push rod (22) is driven to move by a transmission mechanism, so that the liquid push plate (21) pushes out the first molten metal solution in the liquid storage cylinder (10), and the tube mold (5) is driven to rotate by a driving roller (3), so that the poured first molten metal solution is evenly distributed on the inner wall of the tube mold (5); S3. After the first molten metal solution is gradually cooled and formed, protective slag is transported through another delivery pipe (30) to spray the protective slag onto the inner wall of the formed cast pipe through the nozzle (29). After the liquid storage cylinder (10) is removed, the liquid storage cylinder (10) filled with the second molten metal solution is installed on the support seat (9) to pour the second layer of molten metal solution. After the second layer of molten metal solution is cooled and formed, the casting of the bimetallic semi-solid composite cast pipe is completed.

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