Centrifugal casting machine and roller casting process based on centrifugal casting machine

Abstract

The invention relates to the field of rollers, in particular to a centrifugal casting machine and a roller casting process based on the centrifugal casting machine. A casting cylinder is arranged on the base; the casting barrel is connected with the base through the power assembly. The power assembly can control the casting barrel to rotate. A feeding assembly is further arranged on the base; the feeding assembly comprises a storage liquid bag; the liquid storage bag is connected with a control unit used for controlling molten metal to flow from the liquid storage bag to the casting barrel. According to the centrifugal casting machine, through matched use of the feeding assembly and the power assembly, feeding operation of molten metal to the casting barrel can be automatically achieved, then production and manufacturing of rollers are achieved, through matched use of the storage liquid bag, the rotating plate and the counterweight assembly, the weight of the counterweight assembly can be adjusted according to needs, and the production efficiency is improved. Therefore, the pouring amount of the liquid metal liquid can be controlled, the difference between the casting size and the standard part is reduced or avoided, and the roller forming quality is improved.

Description

Technical Field

[0001] The invention relates to the field of rolling mills, in particular to a centrifugal casting machine and a rolling mill casting process based on the centrifugal casting machine. Background Art

[0002] A centrifugal casting machine is a machine used in a casting method that pours liquid metal into a rotating mold, where it is formed and solidified into a casting under the action of centrifugal force. Centrifugal casting machines are mainly divided into three types: horizontal, vertical, and inclined, depending on the direction of the mold's rotating axis:

[0003] Horizontal centrifugal casting machine: mainly used for casting various tubular castings, such as gray cast iron and ductile iron water pipes and gas pipes, with diameters ranging from 75 mm to 3000 mm. In addition, it can also cast large-diameter copper rollers for papermaking machines, various carbon steel and alloy steel pipes, and double-layer steel rollers with different inner and outer layers.

[0004] Vertical centrifugal casting machine: mainly used to produce various ring castings and smaller non-circular castings.

[0005] Among them, roll casting is an important process method in the roll manufacturing process. The roll is a cylindrical tool used to roll metal materials. It is subjected to huge pressure and friction during the rolling process. Roll casting is the process of pouring molten metal into a mold and obtaining a roll product of the desired shape after it cools and solidifies.

[0006] In the roll manufacturing process, centrifugal casting machines are often used. By pouring molten metal into a high-speed rotating mold, the molten metal fills the mold and forms a casting under the action of centrifugal force. Due to the action of centrifugal force, the molten metal can fill the mold well in the radial direction and form the free surface of the roll.

[0007] However, during the casting process, incomplete molding may occur, which is mainly manifested in the reduction of the size of the casting or the uneven thickness of the casting tube wall. This is mainly caused by insufficient liquid metal pouring or uneven distribution of liquid metal during the casting process, thus affecting the subsequent forming quality of the roller.

[0008] In addition, in the existing technology, the process of molten metal flowing into the casting cylinder is often difficult to accurately control, which can easily cause the molten metal to flow too fast or too slow, affecting the molding quality of the casting; uneven molten metal flow rate may lead to uneven wall thickness of the casting, or even incomplete filling.

[0009] When the casting cylinder rotates at high speed, it is easy to shake due to the lack of an effective clamping device, affecting the stable distribution of the molten metal; shaking may cause the molten metal to be unevenly distributed on the inner wall of the casting cylinder, thereby affecting the dimensional accuracy and surface quality of the casting.

[0010] In the prior art, the preheating and cleaning process of the casting cylinder usually requires manual operation, which is inefficient and prone to operational errors.

[0011] Insufficient preheating may result in a large temperature difference between the molten metal and the casting cylinder, causing casting defects; incomplete cleaning may result in residual molten metal affecting the quality of subsequent castings.

[0012] The existing patent 201610758592.2 - A shock-absorbing vertical centrifugal casting machine does not clearly disclose the technical content for solving the above technical problems.

[0013] Therefore, in order to improve or solve at least one of the above technical problems, it is necessary to optimize the design of the existing centrifugal casting machine. Summary of the Invention

[0014] An object of the present invention is to provide a centrifugal casting machine capable of controlling the supply amount of molten metal.

[0015] In order to achieve the above object, the technical solution adopted by the present invention is:

[0016] A centrifugal casting machine comprises a base; a casting cylinder is provided on the base;

[0017] The casting cylinder is connected to the base via a power assembly; the power assembly can control the casting cylinder to rotate;

[0018] A feeding assembly is also provided on the base;

[0019] The feeding assembly includes a liquid storage bag; the liquid storage bag is provided with a diversion mechanism; the diversion mechanism includes a flow nozzle provided on the liquid storage bag; the flow nozzle is located on the side of the liquid storage bag close to the casting cylinder;

[0020] The storage liquid bag is connected to a control unit for controlling the flow of molten metal from the storage liquid bag to the casting cylinder.

[0021] The control unit includes a rotating plate, one end of which is connected to the storage liquid bag, and the other end of which is connected to a counterweight assembly; the counterweight assembly drives the storage liquid bag to move by controlling the rotating plate.

[0022] The rotating plate is connected to the base through a supporting mechanism; the supporting mechanism includes a positioning plate, and the rotating plate is rotatably connected to the positioning plate; the counterweight assembly includes a counterweight disk connected to the end of the rotating plate away from the liquid storage bag, and the counterweight disk is provided with a counterweight block.

[0023] The positioning plate is connected to the base through a regulating assembly; the regulating assembly includes a transverse movement mechanism; the transverse movement mechanism includes a displacement frame, a guide rail, and a sliding block; the guide rails are symmetrically fixedly connected to the top of the base, the sliding block is slidably mounted on the guide rails, the displacement frame is fixedly connected to the top of the two sliding blocks, and the positioning plate is connected to the displacement frame;

[0024] The positioning plate is connected to the displacement frame via an adjustment unit;

[0025] The adjustment unit includes a connecting slot provided on the displacement frame, and the positioning plate passes through the top plate of the displacement frame and is movably connected thereto;

[0026] The positioning plate is provided with a plurality of positioning holes distributed vertically at intervals, and the positioning plate is provided with a positioning rod;

[0027] After the positioning plate is moved to a suitable height on the displacement frame, the positioning rod is inserted into the positioning hole, and the positioning rod abuts against the top of the displacement frame.

[0028] The power assembly includes a power unit, each of which includes a drive shaft. A drive wheel 38 is provided on the drive shaft. The drive wheel 38 is arranged obliquely below the casting cylinder. The drive shaft is connected to a motor; the motor drives the drive wheel to rotate through the drive shaft.

[0029] An annular groove is provided on the casting cylinder, the driving wheel is movably embedded in the annular groove, and limiting rings are provided on both sides of the annular groove.

[0030] An inclined portion is provided on the inner bottom surface of the liquid storage bag, and the inclined portion gradually tilts downward near the flow nozzle. The vertical cross-sectional profile of the flow nozzle is a "U" shape, and the opening of the flow port inside the flow nozzle becomes smaller as it approaches the opening of the casting cylinder.

[0031] A partition mechanism is provided in the storage liquid bag; the partition mechanism includes a blocking plate and a card strip provided in the storage liquid bag, a card slot is formed between the card strip and the side wall of the storage liquid bag close to the flow nozzle, a blocking plate is movably connected in the card slot, a pull ring is provided on the top of the blocking plate, a cover plate is provided on the top of the storage liquid bag away from the flow nozzle, and the cover plate is rotatably connected to the storage liquid bag.

[0032] Vertical mounting plates are symmetrically provided on the top of the base and on both sides of the casting cylinder, and guide holes are provided on the tops of the two mounting plates in opposite positions. A lifting plate is provided in the guide hole, and arc plates are symmetrically provided on the bottom of the lifting plate and above the casting cylinder, and pressure wheels are provided between the two arc plates at intervals, and the outer wall of the pressure wheel is movably fitted on the outer wall of the casting cylinder, and a rotating shaft is provided between the pressure wheel and the arc plate.

[0033] Matching holes are provided on both sides of the guide hole and on the mounting plate, and fastening screws are provided on both sides of the lifting plate. When the lifting plate is moved to a suitable position, the fastening screws are locked in the matching holes. A hot air blower with an external power supply is provided on the outer wall of the mounting plate, and a hot air head is provided on the hot air blower. The hot air head and the hot air blower are connected by a pipeline. A water tank with a built-in water pump is provided on the outer wall of the mounting plate on the other side, and a cleaning nozzle is provided on the outside of the water tank. The cleaning nozzle is connected to the water tank through a pipeline.

[0034] A roller casting process for the centrifugal casting machine includes the following specific steps:

[0035] S1: According to the composition requirements of the roll, various metal raw materials are accurately weighed and reasonably matched. The matched materials are placed in the melting furnace for high-temperature smelting to make them completely melted and reach a uniform liquid state. The temperature and time are controlled to ensure the quality of the molten metal. Refining treatment is then carried out to improve the purity of the molten metal;

[0036] S2: Apply the release agent evenly on the inner wall of the casting cylinder to preheat the casting cylinder to reduce the temperature difference between the molten metal and the casting cylinder to prevent casting defects. The power component is started to drive the casting cylinder to rotate to a suitable speed.

[0037] The molten metal flows into the casting cylinder from the flow nozzle through the storage liquid bag. Under the action of centrifugal force, the molten metal is evenly distributed on the inner wall of the casting cylinder.

[0038] S3: The molten metal gradually cools and solidifies in the casting cylinder to form a roll blank. After the roll blank is cooled to a certain degree, it is taken out of the casting cylinder.

[0039] The advantages of the present invention are:

[0040] The invention discloses a centrifugal casting machine and a roller casting process based on the centrifugal casting machine.

[0041] The centrifugal casting machine disclosed in the present invention can automatically realize the feeding operation of molten metal to the casting cylinder through the combination of the feeding assembly and the power component, thereby realizing the production and manufacturing of the rolling roller. The present invention arranges a liquid storage bag on one side of the casting cylinder, and a rotating plate is installed at the bottom of the liquid storage bag. The rotating plate is designed to rotate, and a counterweight component is connected to the other end. When in use, the weight of the counterweight component can be adjusted as needed, so that the pouring amount of liquid metal can be controlled, the difference between the casting size and the standard part can be reduced or avoided, and the quality of the rolling roller forming is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The following is a brief description of the contents and symbols in the drawings of the present invention:

[0043] Figure 1 This is a schematic diagram of the structure of the components of the integral centrifugal casting machine of the present invention;

[0044] Figure 2 This is a schematic diagram of the structure of the casting cylinder and power components of the present invention;

[0045] Figure 3 This is a schematic diagram of the structure of the components such as the storage liquid package and the regulating assembly of the present invention;

[0046] Figure 4 This is a schematic diagram of the structure of the liquid storage bag and the rotating plate and other components of the present invention;

[0047] Figure 5 This is a cross-sectional view of the structure of the liquid storage bag and the flow nozzle component of the present invention;

[0048] Figure 6 This is a schematic diagram of the structure of the mounting plate, lifting plate and other components of the present invention;

[0049] Figure 7 It is a schematic structural diagram of the arc plate, pressure wheel and other components of the present invention.

[0050] The marks in the above figure are:

[0051] 1. Casting cylinder; 2. Base; 3. Liquid storage bag; 4. Flow nozzle; 5. Rotating plate; 6. Positioning plate; 7. Steel rope; 8. Gravity disk; 9. Driving shaft; 10. Annular groove; 11. Limiting ring; 12. Inclined part; 13. Card strip; 14. Card slot; 15. Blocking plate; 16. Pull ring; 17. Cover plate; 18. Snap ring; 19. Embedding port; 20. Support shaft; 21. Displacement frame; 22. Guide rail; 23. Sliding block; 24. Positioning rod; 25. Positioning hole; 26. Mounting plate; 27. Guide hole; 28. Lifting plate; 29. Arc plate; 30. Pressure wheel; 31. Rotating shaft; 32. Matching hole; 33. Fastening screw; 34. Hot air blower; 35. Hot air head; 36. Water tank; 37. Cleaning nozzle; 38. Driving wheel. DETAILED DESCRIPTION

[0052] The specific implementation of the present invention will be further explained in detail below by describing the best embodiment with reference to the accompanying drawings.

[0053] A centrifugal casting machine includes a base 2; a casting cylinder 1 is provided on the base 2; the casting cylinder 1 is connected to the base 2 via a power assembly; the power assembly can control the rotation of the casting cylinder 1; the base 2 is also provided with a feeding assembly; the feeding assembly includes a liquid storage bag; the liquid storage bag is provided with a diversion mechanism; the diversion mechanism includes a flow nozzle provided on the liquid storage bag; the flow nozzle is located on the side of the liquid storage bag close to the casting cylinder 1; the liquid storage bag is connected to a control unit for controlling the flow of molten metal from the liquid storage bag to the casting cylinder 1; The centrifugal casting machine disclosed in the present invention can automatically realize the feeding operation of molten metal to the casting cylinder 1 through the combination of the feeding assembly and the power component, thereby realizing the production and manufacturing of the rolling mill. The present invention provides a liquid storage bag 3 on one side of the casting cylinder 1, and a rotating plate 5 is installed at the bottom of the liquid storage bag 3. The rotating plate 5 is designed to rotate, and a counterweight component is connected to the other end. When in use, the weight of the counterweight component can be adjusted as needed, so that the pouring amount of liquid metal can be controlled, the difference between the casting size and the standard part can be reduced or avoided, and the quality of the rolling mill forming can be improved.

[0054] In the present invention, the base 2 serves as the basic supporting structure of the entire equipment, carrying components such as the casting cylinder 1, the power component and the feeding assembly.

[0055] The casting cylinder 1 is mounted on a base 2 and is used to contain molten metal and shape it under the action of centrifugal force.

[0056] The casting cylinder 1 is connected to the base 2 via a power assembly, and the power assembly can control the rotation of the casting cylinder 1.

[0057] The function of the power assembly is to drive the casting cylinder 1 to rotate, generate centrifugal force, and make the molten metal evenly distributed and formed.

[0058] The power assembly usually includes components such as motors, drive shafts, and gears.

[0059] The feeding assembly is an important part of the centrifugal casting machine, which is used to store and transport the molten metal.

[0060] It mainly includes a storage liquid bag, which is used to store the molten metal to be poured; the diversion mechanism is a part of the feeding assembly, which is used to guide the molten metal from the storage liquid bag to the casting cylinder 1.

[0061] The flow guiding mechanism includes a flow nozzle, which is arranged on a side of the liquid storage bag close to the casting cylinder 1 to ensure that the molten metal can flow smoothly into the casting cylinder 1.

[0062] The control unit is a key part of the feeding assembly, which is used to control the flow of molten metal from the storage ladle to the casting cylinder 1; its function is to ensure that the flow rate and speed of the molten metal meet the casting requirements.

[0063] The use mainly includes the following steps:

[0064] Molten metal preparation:

[0065] The molten metal liquid is poured into the storage liquid bag, which serves as a temporary storage container for the metal liquid.

[0066] Rotation of casting cylinder 1:

[0067] The power assembly starts, driving the casting cylinder 1 to rotate, generating centrifugal force and providing the necessary conditions for the molding of the molten metal.

[0068] Liquid metal flow control:

[0069] The control unit controls the speed and amount of the molten metal flowing from the storage liquid bag to the casting cylinder 1; the flow nozzle of the diversion mechanism guides the molten metal from the storage liquid bag to the casting cylinder 1, ensuring that the molten metal can be evenly distributed on the inner wall of the casting cylinder 1.

[0070] Cooling and forming:

[0071] The molten metal is cooled and solidified in the casting cylinder 1 to form the desired casting.

[0072] The formed casting is taken out from the casting cylinder 1 and is subsequently processed and handled.

[0073] Furthermore, in the present invention, the control unit includes a rotating plate 5, one end of the rotating plate 5 is connected to the storage liquid bag 3, and the other end is connected to a counterweight assembly; the counterweight assembly drives the storage liquid bag to move by controlling the rotating plate 5; the rotating plate 5 is the core component of the control unit, which is used to control the movement of the storage liquid bag, thereby controlling the flow of the molten metal.

[0074] One end of the rotating plate 5 is connected to the storage liquid bag, and the other end is connected to the counterweight assembly.

[0075] In the present invention, the rotating plate 5 is connected to the base 2 through a supporting mechanism; the supporting mechanism includes a positioning plate 6, and the rotating plate 5 is rotatably connected to the positioning plate 6; the counterweight assembly includes a counterweight disk connected to the end of the rotating plate 5 away from the liquid storage bag, and the counterweight disk is provided with a counterweight block; the rotating plate 5 is connected to the base 2 through a supporting mechanism, and the supporting mechanism includes a positioning plate 6, and the rotating plate 5 is rotatably connected to the positioning plate 6; the counterweight assembly is connected to the end of the rotating plate 5 away from the liquid storage bag, and is used to balance and adjust the inclination angle of the rotating plate 5 by gravity.

[0076] The counterweight assembly includes a counterweight disc and a counterweight block. The counterweight block is provided on the counterweight disc. By adjusting the position or weight of the counterweight block, the balance state of the rotating plate 5 can be changed.

[0077] The supporting mechanism includes a positioning plate 6 , and the rotating plate 5 is connected to the base 2 via the positioning plate 6 .

[0078] The positioning plate 6 provides support for the rotating plate 5 and allows the rotating plate 5 to rotate thereon, thereby achieving motion control of the storage liquid bag.

[0079] In the initial state of the present invention, the rotating plate 5 is kept balanced by the counterweight assembly.

[0080] The counterweight blocks on the counterweight plate are adjusted according to the weight of the stored liquid bag so that the rotating plate 5 remains horizontal or at a preset tilt angle.

[0081] When the molten metal is poured into the storage bag, the weight of the molten metal will cause the rotating plate 5 to tilt toward the storage bag.

[0082] By adjusting the position or weight of the counterweight, the inclination of the rotating plate 5 can be controlled, thereby controlling the flow speed and amount of the molten metal.

[0083] When the rotating plate 5 is tilted to a certain degree, the molten metal flows into the casting cylinder 1 through the flow nozzle of the guide mechanism.

[0084] By controlling the tilt angle of the rotating plate 5 , the flow of the molten metal can be accurately controlled to avoid problems such as incomplete filling or uneven thickness of the tube wall.

[0085] During the flow of molten metal, the position or weight of the counterweight can be dynamically adjusted as needed to achieve real-time control of the flow of molten metal.

[0086] Furthermore, in the present invention, the positioning plate 6 is connected to the base 2 through a regulating component; the regulating component is used to adjust the position of the positioning plate 6; the regulating component includes a transverse movement mechanism; the core of the regulating component is the transverse movement mechanism, which is used to realize the horizontal movement of the positioning plate 6; based on this design, it is convenient to move the storage liquid bag closer to or away from the casting cylinder 1 side; the transverse movement mechanism includes a displacement frame 21, a guide rail 22 and a sliding block 23; the guide rail 22 is symmetrically fixedly connected to the top of the base 2, the sliding block 23 is slidably installed on the guide rail 22, the displacement frame 21 is fixedly connected to the top of the two sliding blocks 23, and the positioning plate 6 is connected to the displacement frame 21; the positioning plate 6 is connected to the displacement frame 21 through an adjustment unit; the The adjustment unit includes a through-groove provided on the displacement frame 21, and the positioning plate 6 passes through the top plate of the displacement frame 21 and is movably connected thereto; a plurality of vertically spaced positioning holes 25 are provided on the positioning plate 6, and a positioning rod 24 is provided on the positioning plate 6; after the positioning plate 6 is moved to a suitable height on the displacement frame 21, the positioning rod 24 is inserted into the positioning hole 25, and the positioning rod 24 abuts against the top of the displacement frame 21; in the present invention, the transverse movement mechanism mainly includes the displacement frame 21: the displacement frame 21 is used to support and fix the positioning plate 6; the guide rail 22 is symmetrically fixedly connected to the top of the base 2 to provide a sliding track; the sliding block 23 is slidably installed on the guide rail 22, and the displacement frame 21 is fixedly connected to the top of the two sliding blocks 23.

[0087] The positioning plate 6 is connected to the displacement frame 21 and is moved horizontally by a transverse movement mechanism.

[0088] The adjustment unit is used to adjust the vertical position of the positioning plate 6; it mainly includes a through-connection groove: the through-connection groove is provided on the displacement frame 21, and the positioning plate 6 passes through the top plate of the displacement frame 21 and is movably connected thereto.

[0089] A plurality of vertically spaced positioning holes 25 are provided on the positioning plate 6 .

[0090] The positioning rod 24 is used to fix the position of the positioning plate 6 on the displacement frame 21 ; when the positioning plate 6 is moved to a suitable height, the positioning rod 24 is inserted into the positioning hole 25 and abuts against the top of the displacement frame 21 .

[0091] In the present invention, the positioning plate 6 can move horizontally on the base 2 through the transverse mechanism displacement frame 21, guide rail 22 and sliding block 23; the sliding block 23 slides on the guide rail 22, driving the displacement frame 21 to move, thereby realizing the horizontal position adjustment of the positioning plate 6.

[0092] Vertical position adjustment: The positioning plate 6 moves vertically on the displacement frame 21 through the adjustment unit through-groove and the positioning hole 25; the positioning hole 25 on the positioning plate 6 cooperates with the positioning rod 24. When the positioning plate 6 moves to the appropriate height, the positioning rod 24 is inserted into the positioning hole 25 to fix the position of the positioning plate 6.

[0093] Through the cooperation of the transverse movement mechanism and the adjustment unit, the positioning plate 6 can be accurately adjusted in the horizontal and vertical directions, thereby ensuring that the position and height of the liquid bag are in line with the casting requirements.

[0094] Furthermore, in the present invention, the power assembly includes a power unit, each of which includes a drive shaft 9, a drive wheel 38 is provided on the drive shaft 9, the drive wheel 38 is arranged obliquely below the casting cylinder 1, and the drive shaft 9 is connected to a motor; the motor drives the drive wheel 38 to rotate through the drive shaft 9; an annular groove 10 is provided on the casting cylinder 1, and the drive wheel 38 is movably embedded in the annular groove 10, and a limiting ring 11 is provided on both sides of the annular groove 10; in the present invention, the power assembly is composed of multiple power units, each of which includes a drive shaft 9 and a drive wheel 38; the drive shaft 9 is connected to the motor, and the motor drives the drive wheel 38 to rotate through the drive shaft 9.

[0095] The driving wheel 38 is arranged at an oblique lower portion of the casting cylinder 1 and is used to cooperate with the annular groove 10 on the casting cylinder 1 to drive the casting cylinder 1 to rotate.

[0096] The outer edge of the driving wheel 38 is movably embedded in the annular groove 10, and drives the casting cylinder 1 to rotate through friction.

[0097] The driving shaft 9 is connected to the motor, and the motor transmits power to the driving wheel 38 through the driving shaft 9; the design of the driving shaft 9 ensures stable power transmission, so that the casting cylinder 1 can rotate smoothly.

[0098] The motor is the power source of the power assembly, and drives the driving wheel 38 to rotate by driving the shaft 9; the selection of the motor needs to be matched according to factors such as the weight of the casting cylinder 1 and the rotation speed requirements.

[0099] The annular groove 10 is provided on the outer wall of the casting cylinder 1 for cooperating with the driving wheel 38 ; the driving wheel 38 is embedded in the annular groove 10 and drives the casting cylinder 1 to rotate through friction.

[0100] The limiting rings 11 are arranged on both sides of the annular groove 10 to limit the radial position of the driving wheel 38; the design of the limiting rings 11 ensures that the driving wheel 38 runs stably in the annular groove 10 to avoid separation due to vibration or external force.

[0101] When in use, the motor is started, and after the motor is started, the power is transmitted to the driving wheel 38 through the driving shaft 9.

[0102] The driving wheel 38 rotates under the drive of the motor, and its outer edge is embedded in the annular groove 10 on the casting cylinder 1; the driving wheel 38 drives the casting cylinder 1 to rotate through the friction with the annular groove 10; the limiting ring 11 ensures that the driving wheel 38 runs stably in the annular groove 10 to avoid separation; the rotation of the casting cylinder 1 generates centrifugal force, so that the molten metal is evenly distributed and formed on the inner wall of the casting cylinder 1.

[0103] Furthermore, an inclined portion 12 is provided on the inner bottom surface of the storage liquid bag 3 in the present invention, and the inclined portion 12 gradually tilts downward in the direction close to the flow nozzle 4. The vertical cross-sectional profile of the flow nozzle 4 is a "U" shape, and the flow opening inside the flow nozzle 4 becomes smaller as it approaches the opening of the casting cylinder 1; the inclined portion 12 here essentially makes the lower end of the storage liquid bag 3 an inclined slope, and such a setting facilitates the discharge of molten metal from the inside and outside of the storage liquid bag 3.

[0104] In the present invention, an inclined portion 12 is provided on the inner bottom surface of the storage liquid bag 3, and the inclined portion 12 gradually tilts downward in the direction close to the flow nozzle 4; this design helps the molten metal to flow smoothly from the storage liquid bag 3 to the flow nozzle 4, reduces the retention of the molten metal at the bottom of the storage liquid bag 3, and ensures that the molten metal can flow into the flow nozzle 4 evenly and smoothly.

[0105] The vertical cross-sectional profile of the flow nozzle 4 is in a “U” shape: The vertical cross-sectional profile of the flow nozzle 4 is designed to be in a “U” shape, which helps to guide the flow of the molten metal and keep it stable during the flow process.

[0106] The “U”-shaped structure can increase the flow path of the molten metal, reduce turbulence and splashing of the molten metal during the flow process, and thus improve the stability of casting.

[0107] The opening of the flow mouth inside the flow nozzle 4 becomes smaller as it gets closer to the opening of the casting cylinder 1; this design can effectively control the flow rate of the molten metal, so that the flow rate gradually decreases when it approaches the casting cylinder 1, avoiding excessive impact force of the molten metal when entering the casting cylinder 1, thereby reducing casting defects such as air holes, inclusions, etc.

[0108] Smaller openings also help the molten metal to be evenly distributed on the inner wall of the casting cylinder 1, improving the quality and consistency of the casting.

[0109] Furthermore, in the present invention, a separation mechanism is provided in the storage liquid bag 3; the separation mechanism includes a blocking plate 15 and a card strip 13 arranged in the storage liquid bag 3, a card slot 14 is formed between the card strip 13 and the side wall of the storage liquid bag 3 close to the flow nozzle 4, the blocking plate 15 is movably connected in the card slot 14, the top of the blocking plate 15 is provided with a pull ring 16, the top of the storage liquid bag 3 away from the flow nozzle 4 is provided with a cover plate 17, and the cover plate 17 is rotatably connected to the storage liquid bag 3; the setting of the separation mechanism mainly plays a blocking and separating role, which is essentially equivalent to a gate structure.

[0110] In the present invention, the blocking plate 15 is a core component of the separation mechanism, and is used to control the flow of the molten metal.

[0111] The blocking plate 15 is movably connected in the slot 14 and can be inserted or withdrawn as needed, thereby controlling whether the molten metal flows into the flow nozzle 4 .

[0112] The clamping strip 13 is provided on the inner wall of the storage liquid bag 3 , and forms a clamping groove 14 between the clamping strip 13 and the side wall of the storage liquid bag 3 close to the flow nozzle 4 .

[0113] The card slot 14 is used to fix the blocking plate 15 to ensure the stability and position accuracy of the blocking plate 15 in the storage liquid bag 3; the card slot 14 is formed by the card strip 13 and the side wall of the storage liquid bag 3 and is used to flexibly connect the blocking plate 15.

[0114] The blocking plate 15 can slide or be pulled out in the slot 14 to control the flow of the molten metal.

[0115] A pull ring 16 is provided on the top of the blocking plate 15 to facilitate the operator in extracting or inserting the blocking plate 15 ; a sling can generally be used to control the position of the blocking plate 15 ; the design of the pull ring 16 improves the convenience and efficiency of operation.

[0116] The cover plate 17 is arranged on the top of the storage liquid bag 3 away from the flow nozzle 4 and is rotatably connected to the storage liquid bag 3; the function of the cover plate 17 is to prevent the metal liquid from splashing or overflowing in the storage liquid bag 3, and at the same time protect the metal liquid in the storage liquid bag 3 from external contamination.

[0117] Furthermore, in the present invention, vertical mounting plates 26 are symmetrically provided at the top of the base 2 and on both sides of the casting cylinder 1, and guide holes 27 are provided at the tops of the two mounting plates 26 in opposite positions, and a lifting plate 28 is provided in the guide hole 27, and an arc plate 29 is symmetrically provided at the bottom of the lifting plate 28 and above the casting cylinder 1, and a pressure wheel 30 is provided between the two arc plates 29. The outer wall of the pressure wheel 30 is movably fitted on the outer wall of the casting cylinder 1, and a rotating shaft 31 is provided between the pressure wheel 30 and the arc plate 29; in the present invention, vertical mounting plates 26 are symmetrically provided at the top of the base 2 and on both sides of the casting cylinder 1; the mounting plates 26 are used to support and fix the lifting plates 28 and the pressure wheels 30.

[0118] The tops of the two mounting plates 26 are provided with guide holes 27 positioned opposite to each other; the guide holes 27 are used to guide the vertical movement of the lifting plate 28 to ensure the stability and accuracy of its movement.

[0119] The lifting plate 28 is disposed in the guide hole 27 and can move up and down in the guide hole 27 ; an arc-shaped plate 29 is provided at the bottom of the lifting plate 28 for supporting the pressure wheel 30 .

[0120] The arc plate 29 is symmetrically arranged at the bottom of the lifting plate 28 and is located above the casting cylinder 1; the design of the arc plate 29 enables it to fit with the outer wall of the casting cylinder 1, providing stable support for the pressure wheel 30.

[0121] Between the two arc-shaped plates 29, there are spaced apart pressing wheels 30. The outer wall of the pressing wheel 30 is movably fitted on the outer wall of the casting cylinder 1. The contact between the pressing wheel 30 and the casting cylinder 1 provides a stable pressing force.

[0122] A rotating shaft 31 is provided between the pressing wheel 30 and the arc-shaped plate 29 , so that the pressing wheel 30 can rotate freely, thereby reducing friction between the pressing wheel 30 and the casting cylinder 1 .

[0123] The rotating shaft 31 connects the pressing wheel 30 and the arc plate 29, so that the pressing wheel 30 can rotate freely; the design of the rotating shaft 31 ensures that the pressing wheel 30 can run smoothly when in contact with the casting cylinder 1, reducing wear.

[0124] The contact position between the pressure wheel 30 and the casting cylinder 1 is adjusted by moving the lifting plate 28 up and down in the guide hole 27 .

[0125] The movement of the lifting plate 28 can be achieved by manual operation or an automated control system, depending on the design of the equipment and process requirements.

[0126] When the lifting plate 28 moves to the appropriate position, the outer wall of the pressure wheel 30 fits against the outer wall of the casting cylinder 1; the pressure wheel 30 provides a stable pressing force through its own gravity or external force, ensuring that the casting cylinder 1 does not shake during rotation.

[0127] The pressure wheel 30 rotates freely via the rotating shaft 31 , reducing friction between the pressure wheel 30 and the casting cylinder 1 , thereby ensuring that the casting cylinder 1 can rotate smoothly.

[0128] The design of the rotating shaft 31 improves the service life and operational stability of the pressure wheel 30; the contact between the pressure wheel 30 and the casting cylinder 1 provides a stable pressing force, ensuring that the casting cylinder 1 does not shake during high-speed rotation, thereby improving the stability of the casting process.

[0129] Furthermore, in the present invention, matching holes 32 are provided on both sides of the guide hole 27 and on the mounting plate 26, and fastening screws 33 are provided on both sides of the lifting plate 28. When the lifting plate 28 is moved to a suitable position, the fastening screws 33 are locked in the matching holes 32. A hot air blower 34 with an external power supply is provided on the outer wall of the mounting plate 26, and a hot air head 35 is provided on the hot air blower 34. The hot air head 35 is connected to the hot air blower 34 through a pipe. A water tank 36 with a built-in water pump is provided on the outer wall of the mounting plate 26 on the other side. A cleaning nozzle 37 is provided outside the water tank 36, and the cleaning nozzle 37 is connected to the water tank 36 through a pipe.

[0130] In the present invention, the mating holes 32 are on the mounting plate 26, and mating holes 32 are provided on both sides of the guide hole 27; the mating holes are used to cooperate with the fastening screws 33 to fix the position of the lifting plate 28; fastening screws 33 are provided on both sides of the lifting plate 28; when the lifting plate 28 is moved to the appropriate position, the fastening screws are locked in the mating holes 32 to ensure that the position of the lifting plate 28 is fixed to prevent displacement during the casting process.

[0131] The auxiliary equipment mainly includes a hot air blower 34. A hot air blower 34 with an external power supply is provided on the outer wall of the mounting plate 26. The hot air blower 34 is used to preheat the casting cylinder 1, reduce the temperature difference between the molten metal and the casting cylinder 1, and prevent the occurrence of casting defects.

[0132] A hot air head 35 is provided on the hot air blower 34, and the hot air head 35 is connected to the hot air blower 34 through a pipeline; the hot air head 35 guides the hot air generated by the hot air blower 34 to the inner wall of the casting cylinder 1 to achieve uniform preheating.

[0133] A water tank 36 with a built-in water pump is provided on the outer wall of the mounting plate 26 on the other side; the water tank 36 is used to store cleaning water, and the water is transported to the cleaning nozzle 37 through the water pump; a cleaning nozzle 37 is provided outside the water tank 36, and the cleaning nozzle 37 is connected to the water tank 36 through a pipeline; the cleaning nozzle 37 is used to clean the inner wall of the casting cylinder 1 after casting is completed, to remove residual molten metal and impurities, to ensure the cleanliness of the equipment and preparation for next use.

[0134] When the lifting plate 28 moves to the appropriate position, the operator locks the fastening screws 33 in the matching holes 32 to ensure that the position of the lifting plate 28 is fixed; this process can be achieved through manual operation or automated control system, depending on the design and process requirements of the equipment.

[0135] Preheating process:

[0136] Before casting, the hot air blower 34 is started, and hot air is blown toward the inner wall of the casting cylinder 1 through the hot air head 35 to achieve uniform preheating.

[0137] Preheating can reduce the temperature difference between the molten metal and the casting cylinder 1, and prevent casting defects such as cracks and pores caused by excessive temperature difference.

[0138] Cleaning process:

[0139] After the casting is completed, the water pump is started to spray the water in the water tank 36 to the inner wall of the casting cylinder 1 through the cleaning nozzle 37 for cleaning.

[0140] Cleaning can remove residual molten metal and impurities, ensure the cleanliness of the casting cylinder 1, and prepare for the next casting.

[0141] A roller casting process for the centrifugal casting machine includes the following specific steps:

[0142] S1: According to the composition requirements of the roll, various metal raw materials are accurately weighed and reasonably matched. The matched materials are placed in the melting furnace for high-temperature smelting to make them completely melted and reach a uniform liquid state. The temperature and time are controlled to ensure the quality of the molten metal. Refining treatment is then carried out to improve the purity of the molten metal;

[0143] S2: evenly apply the release agent to the inner wall of the casting cylinder 1, preheat the casting cylinder 1 to reduce the temperature difference between the molten metal and the casting cylinder 1, and prevent the occurrence of casting defects. The power component is started to drive the casting cylinder 1 to rotate to a suitable speed;

[0144] The molten metal enters the casting cylinder 1 from the flow nozzle 4 through the storage liquid bag. Under the action of centrifugal force, the molten metal is evenly distributed on the inner wall of the casting cylinder 1.

[0145] S3: The molten metal gradually cools and solidifies in the casting cylinder 1 to form a roll blank. After the roll blank is cooled to a certain degree, it is taken out of the casting cylinder 1.

[0146] specific:

[0147] S1: Raw material preparation and smelting;

[0148] Precise weighing: According to the composition requirements of the rolls, various metal raw materials are accurately weighed and reasonably matched.

[0149] Accurate weighing is a critical step in ensuring casting quality. Any deviation in composition may result in substandard casting performance.

[0150] Smelting:

[0151] The prepared materials are placed in a melting furnace for high-temperature melting to completely melt them and reach a uniform liquid state.

[0152] Control the melting temperature and time to ensure the quality of the molten metal. Too high or too low a temperature, or too long or too short a time, may affect the purity and uniformity of the molten metal.

[0153] Refining process:

[0154] Refining treatment is carried out during the smelting process to improve the purity of the molten metal.

[0155] Refining treatment can remove impurities and gases in the molten metal, reduce casting defects, and improve the mechanical properties and service life of castings.

[0156] S2: The casting cylinder 1 is prepared for pouring with molten metal;

[0157] Apply release agent:

[0158] The release agent is evenly applied to the inner wall of the casting cylinder 1.

[0159] The role of the release agent is to prevent the molten metal from adhering to the casting cylinder 1, to facilitate the removal of the casting, and to reduce defects on the surface of the casting.

[0160] Preheat:

[0161] The casting cylinder 1 is preheated to reduce the temperature difference between the molten metal and the casting cylinder 1 .

[0162] Too large a temperature difference may cause thermal stress to be generated when the molten metal enters the casting cylinder 1, thereby causing casting defects such as cracks, pores, etc.

[0163] Starting power components:

[0164] The power assembly is started, driving the casting cylinder 1 to rotate to a suitable speed.

[0165] The choice of rotation speed needs to be adjusted according to the size and shape of the casting to ensure that the molten metal can be evenly distributed under the action of centrifugal force.

[0166] Molten metal pouring:

[0167] The molten metal enters the casting cylinder 1 from the flow nozzle 4 through the storage liquid bag.

[0168] Under the action of centrifugal force, the molten metal is evenly distributed on the inner wall of the casting cylinder 1.

[0169] During the pouring process, the velocity and flow rate of the molten metal need to be controlled to avoid turbulence or splashing of the molten metal when it enters the casting cylinder 1, thereby affecting the quality of the casting.

[0170] S3: cooling and casting removal;

[0171] Cooling and solidification:

[0172] The molten metal gradually cools and solidifies in the casting cylinder 1 to form a blank of the roll.

[0173] The control of cooling rate has an important influence on the microstructure and properties of the casting and needs to be optimized according to the material and size of the casting.

[0174] Casting removal:

[0175] After the roll blank has cooled to a certain degree, it is taken out from the casting cylinder 1.

[0176] The removal process requires careful operation to avoid damage to the casting while ensuring the safety of the operator.

[0177] Precise control: Ensure the quality and composition of the molten metal meet the requirements through accurate weighing and melting, improving the performance and consistency of castings.

[0178] Reducing defects: Applying a release agent and preheating the casting cylinder 1 can reduce the temperature difference between the molten metal and the casting cylinder 1 and prevent the occurrence of casting defects.

[0179] Uniform distribution: centrifugal force is used to evenly distribute the molten metal on the inner wall of the casting cylinder 1, thereby improving the quality and consistency of the casting.

[0180] Improve efficiency: By optimizing the pouring and cooling processes, production efficiency is improved and production cycle is reduced.

[0181] The specific embodiments are as follows:

[0182] As attached Figure 1 To the attached Figure 7 As shown:

[0183] The present invention provides a centrifugal casting machine and a roller casting process, comprising a casting cylinder 1, a base 2 being provided below the casting cylinder 1, a power assembly being provided between the casting cylinder 1 and the base 2, the power assembly driving the casting cylinder 1 to rotate, a liquid storage bag 3 for storing molten metal being provided on one side of the casting cylinder 1, and a flow nozzle 4 being provided at the front end of the liquid storage bag 3;

[0184] It also includes a rotating plate 5, one end of which is fixedly connected to the bottom of the liquid storage bag 3, and positioning plates 6 are provided on both sides of the center position of the rotating plate 5. The rotating plate 5 is rotatably connected between the two positioning plates 6, and a steel rope 7 is provided at the bottom of the other end of the rotating plate 5. A detachable gravity disk 8 is provided at the bottom of the steel rope 7, and a regulating component is provided on the positioning plate 6 and below the rotating plate 5.

[0185] The lifting mechanism of the lifting mechanism is to lift the lifting mechanism on the lifting plate 5 and the lifting plate 6 back to the lifting mechanism, so that the lifting mechanism can be lifted off the lifting platform 11 and the lifting platform 12 can be adjusted.

[0186] In this embodiment, the power assembly includes driving wheels 38, which are symmetrically arranged obliquely below the casting cylinder 1. A driving shaft 9 is provided between the driving wheels 38 on one side, and the driving shaft 9 is connected to the motor.

[0187] It should be noted that the power assembly can drive the casting cylinder 1 to rotate. When the casting liquid enters the casting cylinder 1, the metal liquid fills the mold and forms a roller under the action of centrifugal force.

[0188] In this embodiment, annular grooves 10 are symmetrically provided on the casting cylinder 1 , and the driving wheel 38 is movably embedded in the annular groove 10 . Limiting rings 11 are provided on both sides of the annular groove 10 .

[0189] It should be noted that by setting an annular groove 10 on the outer wall of the casting cylinder 1, the driving wheel 38 is rotated and located in the annular groove 10, which increases the friction between the driving wheel 38 and the annular groove 10. The designed limit ring 11 can prevent the driving wheel 38 from causing the casting cylinder 1 to deviate during the process of driving the casting cylinder 1 to rotate.

[0190] In this embodiment, an inclined portion 12 is provided on the inner bottom surface of the storage liquid bag 3, and the inclined portion 12 gradually tilts downward in the direction close to the flow nozzle 4. The vertical cross-sectional profile of the flow nozzle 4 is a "U" shape, and the flow opening inside the flow nozzle 4 becomes smaller as it approaches the casting cylinder 1.

[0191] It should be noted that after the inclined portion 12 and the baffle plate 15 are pulled upward, the molten metal will flow along the inclined portion 12 toward the flow nozzle 4, thereby allowing it to better enter the flow nozzle 4;

[0192] At the same time, the flow opening inside the flow nozzle 4 is made smaller as it is closer to the opening of the casting cylinder 1, so that the cross-sectional size should gradually decrease as it is closer to the inlet of the casting cylinder 1, thereby controlling the flow rate of the molten metal and avoiding excessive flow.

[0193] In this embodiment, a clamping strip 13 is provided on the opposite surface inside the storage liquid bag 3, and a clamping groove 14 is formed between the clamping strip 13 and the side wall close to the flow nozzle 4. A blocking plate 15 is movably connected in the clamping groove 14, and a pull ring 16 is provided on the top of the blocking plate 15. A cover plate 17 is provided on the top of the side of the storage liquid bag 3 away from the flow nozzle 4, and the cover plate 17 is rotatably connected to the storage liquid bag 3.

[0194] It should be noted that the material of the storage liquid bag 3 is designed to be resistant to high temperatures and not easy to melt, so that high-temperature molten metal can be stored. The baffle plate 15 is movable and can close the inlet of the flow nozzle 4. Therefore, after the molten metal is poured into the storage liquid bag 3 in the initial stage, it can be blocked by the baffle plate 15 to prevent it from flowing directly into the casting cylinder 1.

[0195] In this embodiment, a snap ring 18 is embedded in the bottom center of the rotating plate 5 , an embedding opening 19 is provided on the snap ring 18 , a support shaft 20 is provided between the two positioning plates 6 , and the snap ring 18 is rotatably connected in the snap ring 18 through the embedding opening 19 .

[0196] It should be noted that the retaining ring 18 is fixedly connected to the rotating plate 5 , and the support shaft 20 is rotatably connected in the retaining ring 18 , so that the rotating plate 5 can rotate in different directions on the support shaft 20 .

[0197] In this embodiment, the regulating assembly includes a displacement frame 21, a guide rail 22, a sliding block 23 and a positioning rod 24. The guide rail 22 is symmetrically fixedly connected to the top of the base 2, and the sliding block 23 is slidably installed on the guide rail 22. The displacement frame 21 is fixedly connected to the top of the two sliding blocks 23. The positioning plate 6 passes through the top plate of the displacement frame 21 and is movably connected to it. The positioning plate 6 is provided with vertically spaced positioning holes 25. After the positioning plate 6 is moved to a suitable height, the positioning rod 24 is inserted into the positioning hole 25, and the positioning rod 24 abuts against the top of the displacement frame 21.

[0198] It should be noted that, through the provided regulating assembly, the displacement frame 21 is slidably connected to the guide rail 22 through the sliding block 23, so that the displacement frame 21 can be moved, thereby driving the displacement frame 21 to move, and driving the positioning plate 6 to move, thereby adjusting the position of the liquid bag 3, and then controlling the outlet position of the flow nozzle 4. When centrifugation is required, the displacement frame 21 is pushed forward to make the liquid outlet of the flow nozzle 4 close to the inlet of the casting cylinder 1. After the molten metal has finished flowing, the displacement frame 21 can be pushed backward to facilitate its removal after the roller casting is completed.

[0199] At the same time, the positioning plate 6 is movably arranged on the displacement frame 21, so that the height of the positioning plate 6 can be adjusted, which will ultimately control the height of the liquid outlet of the flow nozzle 4. It can be adjusted according to different situations, thereby improving the flexibility of the flow nozzle 4 during the pouring process;

[0200] The positioning rods 24 are provided so that after the positioning plate 6 is adjusted to a suitable height, the positioning rods 24 can be inserted into the positioning holes 25 to fix the positioning plate 6 .

[0201] In this embodiment, vertical mounting plates 26 are symmetrically provided at the top of the base 2 and on both sides of the casting cylinder 1. Opposite guide holes 27 are provided at the top of the two mounting plates 26. A lifting plate 28 is provided in the guide hole 27. Arc plates 29 are symmetrically provided at the bottom of the lifting plate 28 and above the casting cylinder 1. Interval-distributed pressure wheels 30 are provided between the two arc plates 29. The outer wall of the pressure wheel 30 is movably fitted on the outer wall of the casting cylinder 1. A rotating shaft 31 is provided between the pressure wheel 30 and the arc plate 29.

[0202] It should be noted that the mounting plate 26 is fixed on the base 2, the lifting plate 28 is slidably installed in the guide hole 27, and an arc-shaped plate 29 is provided at the bottom of the lifting plate 28. There is a clamping wheel 30 between the two arc-shaped plates 29. By moving the lifting plate 28 downward, the clamping wheel 30 is made to stick to the outer wall of the casting cylinder 1, thereby limiting the casting cylinder 1 to a certain extent, avoiding the shaking of the casting cylinder 1 under high-speed rotation, causing instability of the internal molten metal, and affecting the forming quality of the subsequent rolling rollers.

[0203] In this embodiment, matching holes 32 are provided on both sides of the guide hole 27 and on the mounting plate 26, and fastening screws 33 are provided on both sides of the lifting plate 28. When the lifting plate 28 is moved to a suitable position, the fastening screws 33 are locked in the matching holes 32. A hot air blower 34 with an external power supply is provided on the outer wall of the mounting plate 26, and a hot air head 35 is provided on the hot air blower 34. The hot air head 35 is connected to the hot air blower 34 through a pipeline. A water tank 36 with a built-in water pump is provided on the outer wall of the mounting plate 26 on the other side, and a cleaning nozzle 37 is provided outside the water tank 36. The cleaning nozzle 37 is connected to the water tank 36 through a pipeline.

[0204] It should be noted that by arranging a water tank 36 on the mounting plate 26, a cleaning nozzle 37 is connected through a pipeline. After the rolling mill is manufactured, the inner wall of the casting cylinder 1 can be cleaned by the cleaning nozzle 37, thereby avoiding manual cleaning. The hot air blower 34 is arranged to dry the interior after cleaning, thereby avoiding the situation where there is residual moisture inside during the subsequent pouring of molten metal, which affects the forming quality of the rolling mill.

[0205] The method of using the above embodiment is that when it is necessary to manufacture a rolling roller, the casting cylinder 1 is connected to the power assembly so that it can drive the casting cylinder 1 to rotate, and the lifting plate 28 is moved to drive the lifting plate 28 to move up and down in the guide hole 27, so that the pressure wheel 30 between the two arc-shaped plates 29 fits on the outer wall of the casting cylinder 1, and is locked in the matching hole 32 by fastening the screw 33, so that the casting cylinder 1 can rotate together with the pressure wheel 30, thereby improving the stability of the casting cylinder 1, and the power assembly is started to drive the casting cylinder 1 to rotate;

[0206] The corresponding gravity plate 8 is taken out according to the quality of the roller forming that needs to be processed. In the initial state, because the storage liquid bag 3 and the flow nozzle 4 have weight, a gravity plate 8 of a certain weight is placed in the early stage to maintain the balance of the entire rotating plate 5. When the gravity plate 8 with the casting molten metal is installed on the steel rope 7, there is a gravity imbalance at this time, which will cause the rotating plate 5 to tilt to one side. At this time, the molten metal is slowly poured into the storage liquid bag 3, which will cause the rotating plate 5 to slowly tilt in the opposite direction. When the rotating plate 5 tends to be balanced, stop adding molten metal, move the displacement frame 21 so that the sliding block 23 slides on the guide rail 22, and eventually drive the outlet of the flow nozzle 4 connected to the storage liquid bag 3 into the casting cylinder 1;

[0207] At this time, the blocking plate 15 blocks the storage liquid bag 3, and the molten metal is placed in the storage liquid bag 3. The blocking plate 15 is moved upward through the retaining ring 18, thereby driving the blocking plate 15 to be pulled upward from the slot 14. At this time, the molten metal will enter the flow nozzle 4, and flow into the casting cylinder 1 in the flow nozzle 4. Because the opening of the flow nozzle 4 gradually decreases, the flow rate of the molten metal can be controlled. Finally, the molten metal enters the casting cylinder 1, and under the action of centrifugal force, it is gradually formed into a rolling roller. After the production is completed, the rolling roller is finally taken out from the casting cylinder 1 by cooling.

[0208] A roller casting process using the centrifugal casting machine comprises the following specific steps:

[0209] S1: According to the composition requirements of the roll, various metal raw materials are accurately weighed and reasonably matched. The matched materials are placed in the melting furnace for high-temperature smelting to make them completely melted and reach a uniform liquid state. The temperature and time are controlled to ensure the quality of the molten metal. Refining treatment is then carried out to improve the purity of the molten metal;

[0210] S2: evenly apply the release agent to the inner wall of the casting cylinder 1, preheat the casting cylinder 1 to reduce the temperature difference between the molten metal and the casting cylinder 1, and prevent the occurrence of casting defects. The power component is started to drive the casting cylinder 1 to rotate to a suitable speed;

[0211] When the weight of the weight plate 5 is too high, the weight plate 5 is lifted up and the balance plate 5 is lifted up, so that the balance plate 5 can be kept in a stable state.

[0212] S3: The molten metal gradually cools and solidifies in the casting cylinder 1 to form a roll blank. After the roll blank is cooled to a certain degree, it is taken out of the casting cylinder 1.

[0213] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A centrifugal casting machine, characterized in that: It comprises a base; a casting cylinder (1) is provided on the base; the casting cylinder is connected to the base via a power assembly; the power assembly can control the casting cylinder to rotate; A feeding assembly is also provided on the base; The feeding assembly includes a liquid storage bag; the liquid storage bag is provided with a diversion mechanism; the diversion mechanism includes a flow nozzle provided on the liquid storage bag; the flow nozzle is located on the side of the liquid storage bag close to the casting cylinder; The storage liquid bag is connected to a control unit for controlling the flow of molten metal from the storage liquid bag to the casting cylinder.

2. A centrifugal casting machine according to claim 1, characterized in that: The control unit comprises a rotating plate (5), one end of the rotating plate (5) is connected to the storage liquid bag (3), and the other end is connected to a counterweight assembly; the counterweight assembly drives the storage liquid bag to move by controlling the rotating plate.

3. A centrifugal casting machine according to claim 2, characterized in that: The rotating plate (5) is connected to the base via a supporting mechanism; the supporting mechanism comprises a positioning plate, and the rotating plate is rotatably connected to the positioning plate; the counterweight assembly comprises a counterweight disc connected to an end of the rotating plate away from the liquid bag storage, and the counterweight disc is provided with a counterweight block.

4. A centrifugal casting machine according to claim 3, characterized in that: The positioning plate is connected to the base through a regulating assembly; the regulating assembly includes a transverse movement mechanism; the transverse movement mechanism includes a displacement frame (21), a guide rail (22) and a sliding block (23); the guide rail (22) is symmetrically fixedly connected to the top of the base (2), the sliding block (23) is slidably installed on the guide rail (22), the displacement frame (21) is fixedly connected to the top of the two sliding blocks (23), and the positioning plate (6) is connected to the displacement frame; The positioning plate is connected to the displacement frame via an adjustment unit; The adjustment unit comprises a connecting groove provided on the displacement frame, and the positioning plate passes through the top plate of the displacement frame (21) and is movably connected thereto; The positioning plate (6) is provided with a plurality of positioning holes (25) distributed vertically at intervals, and the positioning plate is provided with a positioning rod (24); After the positioning plate (6) is moved to a suitable height on the displacement frame (21), the positioning rod (24) is inserted into the positioning hole (25), and the positioning rod (24) abuts against the top of the displacement frame (21).

5. A centrifugal casting machine according to claim 1, characterized in that: The power assembly includes a power unit, each of which includes a driving shaft, a driving wheel (38) is provided on the driving shaft, and the driving wheel (38) is arranged obliquely below the casting cylinder (1). The driving shaft (9) is connected to a motor; the motor drives the driving wheel to rotate through the driving shaft. An annular groove (10) is provided on the casting cylinder (1), the driving wheel (38) is movably embedded in the annular groove (10), and limiting rings (11) are provided on both sides of the annular groove (10).

6. A centrifugal casting machine according to claim 1, characterized in that: An inclined portion (12) is provided on the inner bottom surface of the liquid storage bag (3), and the inclined portion (12) gradually tilts downward in a direction close to the flow nozzle (4). The vertical cross-sectional profile of the flow nozzle (4) is a "U" shape, and the opening of the flow port inside the flow nozzle (4) becomes smaller as it approaches the opening of the casting cylinder (1).

7. A centrifugal casting machine according to claim 5, characterized in that: The storage liquid bag (3) is provided with a partition mechanism; the partition mechanism comprises a blocking plate and a card strip arranged in the storage liquid bag, a card slot (14) is formed between the card strip (13) and the side wall of the storage liquid bag (3) close to the flow nozzle (4), a blocking plate (15) is movably connected in the card slot (14), a pull ring (16) is provided on the top of the blocking plate (15), a cover plate (17) is provided on the top of the side of the storage liquid bag (3) away from the flow nozzle (4), and the cover plate (17) is rotatably connected to the storage liquid bag (3).

8. A centrifugal casting machine according to claim 5, characterized in that; Vertical mounting plates (26) are symmetrically provided on the top of the base (2) and on both sides of the casting cylinder (1), and the tops of the two mounting plates (26) are provided with guide holes (27) positioned opposite to each other. A lifting plate (28) is provided in the guide hole (27), and an arc plate (29) is symmetrically provided at the bottom of the lifting plate (28) and above the casting cylinder (1). A pressure wheel (30) is provided between the two arc plates (29) and is spaced apart. The outer wall of the pressure wheel (30) is movably fitted on the outer wall of the casting cylinder (1), and a rotating shaft (31) is provided between the pressure wheel (30) and the arc plate (29).

9. A centrifugal casting machine according to claim 8, characterized in that: Matching holes (32) are provided on both sides of the guide hole (27) and on the mounting plate (26), and fastening screws (33) are provided on both sides of the lifting plate (28). When the lifting plate (28) is moved to a suitable position, the fastening screws (33) are locked in the matching holes (32). A hot air blower (34) with an external power supply is provided on the outer wall of the mounting plate (26), and a hot air head (35) is provided on the hot air blower (34). The hot air head (35) and the hot air blower (34) are connected through a pipeline. A water tank (36) with a built-in water pump is provided on the outer wall of the mounting plate (26) on the other side, and a cleaning nozzle (37) is provided outside the water tank (36). The cleaning nozzle (37) and the water tank (36) are connected through a pipeline.

10. A roll casting process using the centrifugal casting machine according to any one of claims 1 to 9, characterized in that: The following specific steps are included: S1: According to the composition requirements of the roll, various metal raw materials are accurately weighed and reasonably matched. The matched materials are placed in the melting furnace for high-temperature smelting to make them completely melted and reach a uniform liquid state. The temperature and time are controlled to ensure the quality of the molten metal. Refining treatment is then carried out to improve the purity of the molten metal; S2: evenly applying a release agent to the inner wall of the casting cylinder (1), preheating the casting cylinder (1) to reduce the temperature difference between the molten metal and the casting cylinder (1) to prevent the occurrence of casting defects, and starting the power component to drive the casting cylinder (1) to rotate to a suitable speed; The molten metal enters the casting cylinder (1) from the flow nozzle (4) through the storage liquid bag, and under the action of centrifugal force, the molten metal is evenly distributed on the inner wall of the casting cylinder (1); S3: The molten metal gradually cools and solidifies in the casting cylinder (1) to form a blank of the rolling mill. After the blank of the rolling mill is cooled to a certain degree, it is taken out of the casting cylinder (1).

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