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

Abstract

The invention relates to the technical field of centrifugal casting, and discloses centrifugal casting equipment and casting method.The centrifugal casting equipment for the bimetal semi-solid composite cast pipe comprises a pipe die, a bottom plate, a centrifugal machine body and a driving mechanism, the centrifugal machine body and the driving mechanism are fixedly arranged on the bottom plate, and a plurality of driving rollers are arranged on the centrifugal machine body; through the arrangement of the transversely-arranged liquid storage barrel, the liquid storage barrel can directly stretch into the pipe mold, and in cooperation with the arrangement of the transmission mechanism, in the process that the liquid storage barrel moves in the pipe mold, the transmission mechanism can drive the liquid pushing disc to move through the push rod, so that the liquid pushing disc presses out a molten metal solution in the liquid storage barrel from a liquid outlet; and the driving roller drives the pipe mold to rotate, so that the poured molten metal solution is uniformly distributed on the inner wall of the pipe mold, and compared with a traditional mode of pouring the molten metal solution at a fixed point, the molten metal solution can be more quickly distributed on the inner wall of the pipe mold, and the casting efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of centrifugal casting, in particular to centrifugal casting equipment and a casting method for a bimetallic semi-solid composite casting pipe. Background Art

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

[0003] Chinese patent CN111531145B discloses a centrifuge for casting bimetallic tubes. The centrifuge includes a power device, a pouring device, a heating device, a spraying device, a water cooling device, a tube pushing device and a pipe connecting device. The pouring device includes a fixed-point pouring medium-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 medium-frequency furnace. The pouring hydraulic cylinders on both sides are lifted. The medium-frequency furnace can rotate around the rotating axis under the furnace nozzle to achieve the fixed-point pouring of the inner layer of molten steel. The medium-frequency furnace is placed on the medium-frequency furnace trolley, and the medium-frequency furnace trolley can move on the medium-frequency furnace track perpendicular to the center line of the tube mold. This invention is a single-station centrifuge, which saves floor space. The inner layer of molten steel is poured at a fixed point in the medium-frequency furnace, which saves smelting energy and frees up the overhead crane. The inner layer of molten steel pouring temperature and interval time are more accurately controlled, ensuring the qualified rate of bimetallic cast steel pipes.

[0004] As shown in the above patent, the existing centrifugal casting equipment generally pours the molten metal directly into the tube mold, and cools and forms the molten metal on the inner wall of the tube mold by the rotation of the tube mold. However, for some longer tubes, it takes a long time for the molten metal to flow and distribute evenly in the tube mold when the molten metal is directly poured into the tube mold, especially for some molten metals with poor fluidity, which reduces the casting efficiency of the cast tube.

[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 object 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 more quickly, thereby improving the casting efficiency.

[0007] The above technical objectives of the present invention are 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, wherein a plurality of driving rollers are arranged on the centrifuge body, the pipe mold is arranged on the centrifuge body, the driving roller is in contact with the pipe mold, a driving frame is arranged on the side of the bottom plate away from the centrifuge body, the driving mechanism is connected to the driving frame in a transmission manner, a support rod is fixedly installed on the side of the driving frame close to the pipe mold, a support seat is fixedly installed on the 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 the side of the top of the liquid storage cylinder away from the driving frame, a liquid pusher plate is slidably arranged in the liquid storage cylinder, a push rod is fixedly installed on the side of the liquid pusher plate away from the liquid outlet, the push rod passes 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, and a connecting box is fixedly installed on both sides of the support seat, a plurality of nozzles are connected at the bottom end of the connecting box, and a conveying pipe is connected on the connecting box.

[0008] The present invention is further configured as follows: a groove is provided on the 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 provided on the top of the support seat, the push rod passes through the notch, two limit blocks are fixedly installed on both sides of the top of the support seat, and positioning seats are fixedly installed on both sides of the liquid storage cylinder, and the positioning seat is arranged between the two limit blocks.

[0009] The present invention is further configured as follows: the driving mechanism includes a first guide rail, a first slide, a first screw and a motor, the first guide rail is fixedly mounted on the top of the base plate, the first slide is slidably mounted inside the first guide rail, a first screw is rotatably mounted inside the first guide rail, a motor transmission-connected to the first screw is fixedly mounted on the first guide rail, through grooves are provided on both sides of the first guide rail, both sides of the first slide extend through the through grooves, and the bottom of the driving frame is fixedly connected to both sides of the first slide.

[0010] The present invention is further configured as follows: the transmission mechanism includes a push block, a second guide rail, a second slide seat and a second screw rod, the second guide rail is fixedly installed at the bottom end of the support rod, a second slide seat is slidably installed inside the second guide rail, the top end of the second slide seat extends into the groove, and the second slide seat is slidably matched with the support rod, a push block is fixedly installed on the top end of the second slide seat, the push block is slidably arranged in the groove, the end of the push rod away from the liquid pushing plate contacts the push block, a second screw rod is rotatably installed inside the second guide rail, the end of the second screw rod away from the support seat extends out of the second guide rail, and the second The end of the screw rod extending out of the second guide rail is fixedly installed with the first rotating shaft, and the end of the first rotating shaft away from the second guide rail is fixedly installed with the first bevel gear, and a connecting seat is fixedly installed on the side of the bottom wall of the support rod away from the supporting seat, and the second rotating shaft is rotatably installed on the connecting seat, and one end of the second rotating shaft is fixedly sleeved with the second bevel gear, and the second bevel gear is meshed with the first bevel gear, and the other end of the second rotating shaft is fixedly sleeved with the first gear, and the top end of the first guide rail is fixedly installed with a mounting frame, and the top end of the mounting frame is fixedly installed with a first rack, and the first gear is adapted to the first rack.

[0011] The present invention is further configured as follows: a first hanging buckle is fixedly provided at the top end of the tube mold, and a second hanging buckle is fixedly provided at the top end of the liquid storage cylinder.

[0012] The present invention is further configured as follows: drainage grooves are provided on both sides of the liquid outlet, and the drainage grooves are fixedly connected to the liquid storage cylinder.

[0013] The present invention is further configured as follows: a cover is slidably installed on the top end of the support rod, a cover is fixedly installed on one end of the cover close to the support seat, the cover block is matched with the notch on the support seat, a second rack is fixedly installed on the bottom end of the cover, a second gear is rotatably installed on the side wall of the support rod, the second gear is meshed with the second rack, a third rack is meshed below the second gear, and the third rack is fixedly connected to the mounting frame through a connecting plate.

[0014] The present invention is further configured as follows: two limit seats are fixedly installed on the top of the centrifuge body, a gap is arranged inside the limit seat, and two positioning rings are fixedly arranged on the outer wall of the tube mold, and the positioning rings are arranged in the gap inside the limit seat.

[0015] The present invention is further configured as follows: sealing rings are provided at both ends of the pipe mold, the sealing rings are fixedly connected to the pipe mold by connecting bolts, and a through hole is provided in the middle of the sealing ring.

[0016] A casting method of a bimetallic semi-solid composite cast pipe, using the centrifugal casting equipment of the bimetallic semi-solid composite cast pipe, comprises the following steps: 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; 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; 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.

[0017] 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

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a structural schematic diagram of the centrifuge body of the present invention; Figure 3 It is a structural schematic diagram of the pipe mold of the present invention; Figure 4 It is a structural schematic diagram of the driving mechanism of the present invention; Figure 5 It is a schematic cross-sectional structural diagram of the liquid storage cylinder of the present invention; Figure 6 This is one of the structural schematic diagrams of the support rod, support seat and liquid storage cylinder of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure at point A; Figure 8 This is the second structural schematic diagram of the support rod, support seat and liquid storage cylinder of the present invention; Fig. 9 It is a structural schematic diagram of the transmission mechanism of the present invention; Fig.10 It is a schematic diagram of the structure of the connecting box and the nozzle of the present invention.

[0019] In the figure: 1, bottom plate; 2, centrifuge body; 3, driving roller; 4, limiting seat; 5, pipe mold; 501, positioning ring; 502, first hanging buckle; 503, sealing ring; 504, connecting bolt; 6, driving frame; 7, driving mechanism; 701, first guide rail; 702, first slide seat; 703, first screw; 704, motor; 8, support rod; 801, groove; 9, support seat; 901, notch; 10, liquid storage cylinder; 1001, second hanging buckle; 1002, positioning seat; 1003, liquid outlet; 1004, discharge Liquid tank; 11. push block; 12. second guide rail; 13. second slide 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 push plate; 22. push rod; 23. cover; 2301, sealing block; 24. second rack; 25. second gear; 26. third rack; 27. connecting plate; 28. connecting box; 29. ​​nozzle; 30. delivery pipe; 31. first rack; 32. mounting bracket; 33. limit block. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] See also Figure 1 to Figure 7 and Fig.10In an 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, wherein the centrifuge body 2 is provided with a plurality of driving rollers 3, the driving rollers 3 are the inherent structure of the centrifuge body 2, and the plurality of driving rollers 3 can rotate synchronously when the centrifuge body 2 is working, 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 the side of the bottom plate 1 away from the centrifuge body 2, the driving mechanism 7 is connected to the driving frame 6 in a transmission manner, so that the driving frame 6 can move, and a support rod 8 is fixedly installed on the side of the driving frame 6 close to the pipe mold 5, the support rod 8 A support seat 9 is fixedly installed at one end of the support rod 8 away from the driving frame 6, and a liquid storage cylinder 10 is detachably installed on the support seat 9. A liquid outlet 1003 is provided on the side of the top 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, and the outer peripheral wall of the liquid pushing plate 21 is in contact with the inner peripheral wall of 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, and the push rod 22 penetrates the side wall of the liquid storage cylinder 10. A transmission mechanism for driving the push rod 22 to move is provided on the support rod 8. Connecting boxes 28 are 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. A delivery pipe 30 is provided on 28; the two delivery pipes 30 are used to input the heat-resistant protective coating and the protective slag respectively. When in use, the preheated pipe mold 5 is installed on the centrifuge body 2, and 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 transported through the delivery pipe 30 and sprayed out through the nozzle 29. In coordination 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 connecting box 28 is removed from the pipe mold 5, and the liquid storage cylinder 10 containing the first molten metal solution is installed on the support seat 9, and then the support seat 9 is driven by the driving frame 6 to move into the pipe mold 5, and the liquid storage cylinder When the liquid storage cylinder 10 moves in the tube mold 5, the push rod 22 is driven to move by the transmission mechanism, so that the liquid pusher 21 presses out the first molten metal solution in the liquid storage cylinder 10, and drives the tube mold 5 to rotate through the driving roller 3, so that the poured first molten metal solution is evenly distributed on the inner wall of the tube mold 5. After the first molten metal solution is gradually cooled and formed, the protective slag is transported 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 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 can be completed; 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] In this embodiment, preferably, drainage grooves 1004 are provided on both sides of the liquid outlet 1003, and the drainage grooves 1004 are fixedly connected to the liquid storage cylinder 10. Electric heating wires are provided in the drainage grooves 1004 to heat the drainage grooves 1004 to prevent the molten metal solution from solidifying on the drainage grooves 1004. The molten metal solution overflowing through the liquid outlet 1003 can flow out through the drainage grooves 1004 and flow into the tube mold 5, thereby preventing the metal from easily remaining on the outer wall of the liquid storage cylinder 10.

[0026] In this embodiment, preferably, a first hanging buckle 502 is fixedly provided on the top of the tube mold 5, and a second hanging buckle 1001 is fixedly provided on the top of the liquid storage cylinder 10; the hanger can lift the tube mold 5 through the first hanging buckle 502 to facilitate replacement of the tube mold 5 after pouring is completed, and the hanger can lift the liquid storage cylinder 10 through the second hanging buckle 1001 to facilitate replacement of the liquid storage cylinder 10.

[0027] See also Figures 5 to 9 In the embodiment of the present invention, a groove 801 is provided on the 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 provided on the top of the support seat 9, the push rod 22 passes through the notch 901, two limit blocks 33 are fixedly installed on both sides of the top of the support seat 9, and a positioning seat 1002 is fixedly installed on both sides of the liquid storage cylinder 10, and the positioning seat 1002 is arranged between the two limit 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 seat 1002 is arranged between the two limit 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.

[0028] In this embodiment, preferably, the transmission mechanism includes a push block 11, a second guide rail 12, a second slide 13 and a second screw 14, the second guide rail 12 is fixedly installed at the bottom end of the support rod 8, the second slide 13 is slidably installed inside the second guide rail 12, the top end of the second slide 13 extends into the groove 801, and the second slide 13 and the support rod 8 are slidably matched, the top end of the second slide 13 is fixedly installed with a push block 11, the push block 11 is slidably set in the groove 801, the end of the push rod 22 away from the liquid push plate 21 is in contact with the push block 11, and the second guide rail 12 is rotatably installed inside A second screw rod 14, one end of the second screw rod 14 away from the support seat 9 extends out of the second guide rail 12, and the end of the second screw rod 14 extending out of the second guide rail 12 is fixedly installed with a first rotating shaft 15, and the end of the first rotating shaft 15 away from the second guide rail 12 is fixedly installed with a first bevel gear 16, a connecting seat 20 is fixedly installed on the side of the bottom wall of the support rod 8 away from the support seat 9, and a second rotating shaft 18 is rotatably installed on the connecting seat 20, one end of the second rotating shaft 18 is fixedly sleeved with a second bevel gear 17, the second bevel gear 17 is meshed with the first bevel gear 16, and the other end of the second rotating shaft 18 is fixedly sleeved with The first gear 19, the top of the first guide rail 701 is fixedly installed with a mounting frame 32, the top of the mounting frame 32 is fixedly installed with a first rack 31, and the first gear 19 is adapted to the first rack 31; when the driving frame 6 drives the support rod 8 to move toward the tube mold 5, the first gear 19 moves toward the first rack 31, and when the liquid storage cylinder 10 just enters the tube mold 5, the first gear 19 is meshed with the first rack 31, and as the support rod 8 continues to move, the first rack 31 drives the first gear 19 to rotate, and when the first gear 19 rotates, it drives the second rotating shaft 18 to rotate, thereby driving the second bevel gear 17 to rotate, and the second When the 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 14 to rotate through the first rotating shaft 15. When the second screw 14 rotates, it drives the second slide seat 13 to move, thereby driving the push block 11 to move toward the tube mold 5, so that the push block 11 pushes the push rod 22 to move, so that the liquid pushing plate 21 gradually pushes out the molten metal solution in the liquid storage cylinder 10. Through the arrangement of the above structure, after the liquid storage cylinder 10 enters the tube mold 5, the molten metal solution in the liquid storage cylinder 10 can overflow from the liquid outlet 1003 at a uniform speed as the liquid storage cylinder 10 moves, thereby ensuring the uniformity of the output of the molten metal solution.

[0029] In this embodiment, preferably, a cover 23 is slidably installed on the top of the support rod 8, and the movement of the cover 23 has damping. A sealing block 2301 is fixedly installed on one end of the cover 23 close to the support seat 9, and the sealing block 2301 is adapted to the notch 901 on the support seat 9. A second rack 24 is fixedly installed on the bottom end of the cover 23, and a second gear 25 is rotatably installed on the side wall of the support rod 8. The second gear 25 is meshed with the second rack 24, and a third rack 26 is meshed below the second gear 25. The third rack 26 is fixedly connected to the mounting bracket 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 to facilitate installation. When the liquid storage cylinder 10 is installed, the push rod 22 is placed in the groove 801. When the support rod 8 drives the liquid storage cylinder 10 to move into the tube 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, thereby preventing the debris generated during pouring from entering the groove 801 when the support rod 8 enters the tube mold 5. The above-mentioned structure is set up so that the cover 23 can automatically close the groove 801 when the support rod 8 enters the tube mold 5, and when the support rod 8 moves out of the tube mold 5, the cover 23 can automatically move away to open the top opening of the groove 801 to facilitate the replacement and installation of the liquid storage cylinder 10.

[0030] The present invention also discloses a centrifugal casting device and a casting method for a bimetallic semi-solid composite cast pipe, comprising the following steps: S1. The preheated pipe mold 5 is mounted on the centrifuge body 2, and the support rod 8 is driven by the driving frame 6 to move so that the connecting box 28 moves into the pipe mold 5. During the movement of the connecting box 28 in the pipe 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 pipe mold 5, the heat-resistant protective coating is distributed on the inner wall of the pipe mold 5, and then the connecting box 28 is moved out of the pipe mold 5; S2. The liquid storage cylinder 10 containing the first molten metal solution is installed on the support seat 9, and then the support seat 9 is driven by the 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 the transmission mechanism, so that the liquid push plate 21 presses out the first molten metal solution in the liquid storage cylinder 10, and the tube mold 5 is driven to rotate by the 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 can be completed.

[0031] The above description is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

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), and the push rod (22) passes through the side wall of the liquid storage cylinder (10), and a transmission mechanism for driving the push rod (22) to move is provided on the support rod (8), and a connecting box (28) is fixedly installed on both sides of the support seat (9), and 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).

2. The centrifugal casting equipment for a bimetallic semi-solid composite casting pipe according to claim 1, characterized in that: A groove (801) is formed on a side of the top end of the support rod (8) away from the drive frame (6), the push rod (22) is arranged in the groove (801), a notch (901) is formed on the top end 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 end 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).

3. The centrifugal casting equipment of a bimetallic semi-solid composite casting pipe according to claim 2, characterized in that: 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).

4. The centrifugal casting equipment for a bimetallic semi-solid composite casting pipe according to claim 3, characterized in that: 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).

5. 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).

6. The centrifugal casting equipment for 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).

7. The centrifugal casting equipment for a bimetallic semi-solid composite casting pipe according to claim 4, 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).

8. 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).

9. 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).

10. 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 9, 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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