Large forge piece forging equipment and method
By utilizing large-scale forging equipment and methods, and employing the coordinated operation of power motors, hydraulic equipment, and servo motors, the problems of low temperature, increased number of forging passes, and coarse grains in the forging of mechanical penetration parts of the nuclear island containment have been solved. This has enabled high-precision and stable forging, while reducing energy consumption and costs.
Patent Information
- Application Number
- CN202610019704.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-08
- Publication Date
- 2026-03-06
AI Technical Summary
Existing technologies for forging large-scale mechanical penetration components for nuclear island containment structures have several drawbacks. These include the low temperature at the two ends of the mandrel elongation stage, which can lead to reflow, increased firing times, increased heat consumption, coarse grains, and mandrel seizing. These issues result in energy waste, increased costs, and may even lead to scrapping.
A large forging equipment and method is adopted. By setting forging components, auxiliary components and support components, and utilizing the coordinated work of power motor, hydraulic equipment and servo motor, the forging is accurately positioned, uniformly stressed and stably moved. With the help of forging hammer, upsetting, drawing and punching operations are performed to ensure the high precision and stability of the forging at different stages.
It has achieved high-precision forging of mechanical penetration parts of the nuclear island containment vessel, reduced energy consumption and costs, avoided problems such as dimensional deviations and coarse grains in forgings, and ensured the long-term stable operation of forging equipment.
Smart Images
Figure CN121607540A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of forging equipment technology, specifically to a forging equipment and method for large forgings. Background Technology
[0002] Nuclear power is an emerging industry that the country prioritizes and encourages to develop. It is an effective means and a realistic choice for adjusting my country's energy structure, overcoming resource and environmental constraints, implementing low-carbon emission reduction, solving energy security issues, and supporting economic development. It is also an important pillar for meeting my country's continuously growing energy demand and for building a sustainable energy system in the future.
[0003] Large-scale mechanical penetrations for nuclear island containment structures are primarily used in the containment piping systems of nuclear power units above 1000MW and the "Hualong One" third-generation nuclear power plant with independent intellectual property rights. They are essential equipment in nuclear power plant piping systems. The containment structure employs a double-layer design, with the penetrations located between the inner and outer shells, tightly connecting them. They are crucial for ensuring the integrity of the containment structure and the normal operation of the piping system under emergency conditions.
[0004] The thin-walled nature of the forgings at both ends of the through-hole part means that conventional forging methods often result in the mandrel being drawn up at the small stepped ends, which has to be reheated due to the low temperature, increasing the number of forging cycles and heat consumption. At the same time, there is the problem of small forging ratio forging, resulting in coarse grains. There is also a probability of the mandrel seizing, which leads to energy waste, increased costs, and even scrapping. In view of this, we propose a forging equipment and method for large forgings. Summary of the Invention
[0005] The purpose of this invention is to provide a large forging equipment and method to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: A large forging equipment includes a mounting frame. A forging furnace for heating the forging body is disposed on one side of the mounting frame. A base plate is fixedly mounted on the bottom of the side of the mounting frame away from the forging furnace. A forging assembly is disposed on the mounting frame, and the forging assembly includes: A power motor is fixedly mounted on the base plate, a bracket is fixedly mounted on the base plate, one end of a threaded rod is fixedly mounted on the output end of the power motor, a slide rail is fixedly mounted on the base plate, a slider is slidably mounted on the slide rail, a sliding block is fixedly mounted on the slider, and a connecting block and a universal wheel are fixedly mounted on the bottom of the sliding block. A movable frame is fixedly installed on the sliding block. A servo motor is fixedly installed on the movable frame. A U-shaped frame is fixedly installed at the output end of the servo motor. One end of a cylinder is fixedly installed on the U-shaped frame. A bonding block is fixedly installed at the other end of the cylinder. A thick spring is fixedly installed between the bonding block and the U-shaped frame. A hydraulic device is fixedly installed on the U-shaped frame. A clamping block is fixedly installed on the piston end of the hydraulic device. A hydraulic impact device is fixedly installed on the mounting frame. A forging hammer is fixedly installed on the piston end of the hydraulic impact device. A support frame is fixedly installed on the mounting frame. A placement groove is fixedly installed on the support frame.
[0007] In a further embodiment, the slide rail, sliding block, caster wheel, hydraulic device, and clamping block are provided in multiple sets, with the multiple sets of caster wheels attached to the base plate.
[0008] In a further embodiment, the other end of the threaded rod is rotatably mounted on the bracket, the connecting block is threaded onto the threaded rod, the cylinder is disposed inside the coarse spring, the hydraulic impact device and the forging hammer are disposed directly above the placement groove, and the upper surface of the support frame is arc-shaped.
[0009] In a further embodiment, the mounting frame is provided with an auxiliary component, which includes a partition. The partition is fixedly mounted on the mounting frame and has an arc-shaped groove. A guide plate is fixedly mounted on the partition, a collection box is slidably mounted on the partition, a handle is fixedly mounted on the collection box, a mounting column is fixedly mounted on the partition, a support wheel is rotatably mounted on the mounting column, and an auxiliary wheel is rotatably mounted on the partition.
[0010] In a further embodiment, multiple sets of the partition, arc groove, guide plate, handle, mounting column, support wheel, and auxiliary wheel are provided.
[0011] In a further embodiment, a gap is left between the partition and the support frame, the collection box is located below the support frame, multiple sets of support wheels are located at the bottom of the arc-shaped groove, and multiple sets of auxiliary wheels are attached to the bottom of the support wheels.
[0012] In a further embodiment, a support assembly is provided on the base plate. The support assembly includes a blocking block. The blocking block is fixedly installed on the base plate. A circular groove is formed on the blocking block. A support roller is rotatably installed on the blocking block. An installation groove is formed on the blocking block. One end of a short spring is fixedly installed on the blocking block. One end of a round rod is fixedly installed on the other end of the short spring. A buffer pad is fixedly installed on the other end of the round rod.
[0013] In a further embodiment, multiple sets of the blocking block, circular groove, support roller, mounting groove, short spring, circular rod, and buffer pad are provided.
[0014] In a further embodiment, the support roller is disposed inside the circular groove, the short spring is disposed inside the mounting groove, the circular rod slides inside the mounting groove, the support roller is attached to the bottom of the collection box, and the buffer pad is directly opposite the caster wheel.
[0015] A forging method for a large forging forging equipment includes the following steps: S1. Before forging, inspect the mounting frame, forging furnace, forging components, auxiliary components, support components, and insulation device to confirm that the forging furnace temperature control is normal, the power motor and servo motor operate smoothly, the hydraulic equipment and hydraulic impact device pressure meets the standard, the clamping block is unworn, the forging hammer head is intact, the arc surface of the support frame is smooth, the support wheel and auxiliary wheel rotate smoothly, the collection box is undamaged, the support roller is not stuck, the short spring has normal elasticity, and the buffer pad is not aged. After the inspection is correct, transfer the steel ingot to the preset position, assemble and debug the insulation device to ensure that the guide rail slides smoothly and the outer diameter adjustment is effective. S2. During the first forging, start the power motor to drive the threaded rod to rotate, causing the connecting block to slide along the slide rail, which in turn drives the moving frame to move until the U-shaped frame is aligned with the steel ingot. Start the hydraulic equipment, and use the clamping block and the fitting block to clamp the steel ingot and send it into the forging furnace to be heated to 1230℃. After being removed, place it in the placement slot, adjust the posture to complete the clamping handle and the misalignment of the sprue, start the hydraulic impact device, use the forging hammer to upset and draw the four sides, and use the guide plate to chamfer the edges. After completion, transfer the forging to the cooling zone, turn off the equipment, and let it cool naturally. S3. During the second forging, the cooled forging is clamped and fed into the forging furnace and heated to 1220°C. It is then removed and placed in the placement slot. The servo motor is started to finely adjust the angle, and the forging hammer is used for upsetting. The moving frame is then adjusted to move the forging, and the forging hammer is used to lengthen it. During the process, the support wheel and auxiliary wheel assist in the movement. The collection box collects the oxide scale. After completion, the forging is transferred to a cooling device and the equipment is turned off. S4. During the third forging, repeat the clamping and heating process of the second forging, heat to 1220℃, remove and then use a forging hammer to upset, and then use a guide plate to punch and expand the hole. Transfer the cooled forging to room temperature and clean the oxide scale from the collection box at the same time. S5. During the fourth forging, the forging is held and heated to 1220℃. After being removed, the mandrel is installed to move the forging. The mandrel is then used to lengthen the forging to 2080mm. The position number is then finely adjusted and marked. The A and C ends are then lengthened to 1900mm. After completion, the forging is transferred to a cooling device and the equipment is turned off. S6. During the fifth forging, the clamped forging is heated to 1220℃, removed and its position is adjusted. The A end is lengthened to 1400mm with a forging hammer, and the C end is covered with a heat-insulating device to keep it warm. After the standard is met, the heat-insulating device is removed. S7. Maintain the temperature of the forging, adjust the angle and lengthen end C to 1400mm, cover end A for insulation, during the process the support wheel and auxiliary wheel assist the rotation, the collection box collects the oxide scale, and remove the insulation device after the standard is met. S8. Adjust the position and lengthen end A to 1150mm, then cover end C for insulation. Make real-time fine adjustments to ensure accurate dimensions. Once the standard is met, remove the insulation device. S9. Adjust the angle and lengthen the C end to 1990mm. Then move the forging to lengthen the middle step. Monitor the temperature to ensure the final forging temperature is 850℃. After completion, transfer it to the cooling system and turn off the power system. S10. Inspect the appearance and dimensions of the forgings. If there are any deviations or defects, repair the forging with a forging hammer. After cooling, clean the collection box, maintain the equipment, disassemble and clean the insulation device, and complete the process.
[0016] Compared with the prior art, the present invention provides a forging equipment and method for large forgings, which has the following beneficial effects: 1. The large forging equipment and method, in order to meet the forging requirements of high-precision forgings of mechanical penetration parts of nuclear island containment, is equipped with a forging assembly. This assembly, in conjunction with a power motor, drives a threaded rod to rotate, which in turn moves a connecting block, a sliding block, and a moving frame along a slide rail. Universal wheels assist in sliding to reduce resistance. The position of the forging can be adjusted according to forging requirements. A hydraulic device pushes a clamping block to cooperate with a fitting block to stably clamp the forging. A servo motor drives a U-shaped frame to finely adjust the angle of the forging to ensure uniform force on the forging. A hydraulic impact device drives a forging hammer to perform upsetting, drawing, and punching operations on the forging placed in the slot.
[0017] 2. In order to ensure continuous and efficient forging operations, the large forging equipment and method are equipped with auxiliary components. These components work together to guide the oxide scale generated during forging into a collection box via a guide plate, preventing oxide scale accumulation from affecting forging accuracy. At the same time, the handle facilitates regular cleaning. When the forging moves on the support frame, the support wheel and auxiliary wheel in the arc groove cooperate to help the forging rotate or slide smoothly. Especially in the punching and reaming processes, this ensures accurate center positioning of the forging. The gap between the partition and the support frame provides a channel for oxide scale to fall. Multiple sets of auxiliary components are adapted to different forging stages to avoid dimensional deviations caused by forging shaking.
[0018] 3. In order to ensure the long-term stable operation of the large forging equipment and method, the large forging equipment is equipped with a support component. When the mobile frame moves to the forging area with the casters, the buffer pad is in contact with the casters, and the short spring is compressed to absorb the impact energy, preventing the casters from directly hitting the blocking block and causing damage to the components. At the same time, it limits the movement range of the mobile frame to ensure that the forging is accurately aligned with the forging hammer. When the collection box is placed, the support roller rolls against its bottom, which facilitates the pulling and cleaning of the collection box and prevents the collection box from getting stuck and causing oxide scale to accumulate. Multiple sets of support components are symmetrically distributed to adapt to the multi-directional movement requirements of the mobile frame, and at the same time provide stable support for the collection box to prevent deformation of the collection box. Attached Figure Description
[0019] Figure 1This is a schematic diagram of the overall structure of the present invention in standby mode; Figure 2 This is a schematic diagram of the overall structure and working state of the present invention; Figure 3 This is a schematic diagram of the overall structure and working state from another perspective of the present invention; Figure 4 This is a schematic diagram of the standby state of part of the structure of the present invention; Figure 5 This is a partial structural diagram of the present invention; Figure 6 This is a schematic diagram of the supporting component structure of the present invention; Figure 7 This is a cross-sectional view of the mounting frame structure of the present invention; Figure 8 For the present invention Figure 7 Enlarged structural diagram of region A in the middle; Figure 9 This is a schematic diagram of the mounting frame structure of the present invention; Figure 10 This is a forging process diagram of the present invention; Figure 11 This is a blank drawing of the forging of the through-hole component of the present invention; Figure 12 This is a flowchart of the method of the present invention.
[0020] Explanation of icon numbers: 1. Mounting frame; 2. Forging furnace; 3. Forging body; 4. Base plate; 5. Forging components; 51. Power motor; 52. Bracket; 53. Threaded rod; 54. Slide rail; 55. Slider; 56. Sliding block; 57. Connecting block; 58. Caster wheel; 59. Moving frame; 510. Servo motor; 511. U-shaped frame; 512. Cylindrical column; 513. Fitting block; 514. Coarse spring; 515. Hydraulic equipment; 516. Clamping block; 517. Hydraulic impact device; 518. Forging hammer; 519. Support frame; 520. Placement slot; 6. Auxiliary components; 61. Partition; 62. Arc-shaped groove; 63. Guide plate; 64. Collection box; 65. Handle; 66. Mounting column; 67. Support wheel; 68. Auxiliary wheel; 7. Support assembly; 71. Barrier block; 72. Circular groove; 73. Support roller; 74. Mounting groove; 75. Short spring; 76. Round rod; 77. Buffer pad. Detailed Implementation
[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0022] In this application, the term "above" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is primarily used to better describe this application and its embodiments, and is not intended to limit the indicated device, element, or component to having a specific orientation, or to construct and operate in a specific orientation. Furthermore, the term "above" may also be used in certain circumstances to indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.
[0023] Please see Figures 1-12 The present invention provides a technical solution: A large forging equipment includes a mounting frame 1, a forging furnace 2 for heating the forging body 3 is provided on one side of the mounting frame 1, and a base plate 4 is fixedly installed on the bottom of the side of the mounting frame 1 away from the forging furnace 2.
[0024] In one embodiment of the present invention, a forging assembly 5 is provided on the mounting frame 1. The forging assembly 5 includes a power motor 51, which is fixedly mounted on a base plate 4. A bracket 52 is fixedly mounted on the base plate 4. One end of a threaded rod 53 is fixedly mounted on the output end of the power motor 51. A slide rail 54 is fixedly mounted on the base plate 4. A slider 55 is slidably mounted on the slide rail 54. A sliding block 56 is fixedly mounted on the slider 55. A connecting block 57 and a universal wheel 58 are fixedly mounted on the bottom of the sliding block 56. A moving frame 59 is fixedly mounted on the sliding block 56. A servo motor 510 is fixedly mounted on the moving frame 59. A U-shaped frame 511 is fixedly mounted on the output end of the servo motor 510. One end of a cylinder 512 is fixedly mounted on the U-shaped frame 511. A fitting block 513 is fixedly mounted on the other end of the cylinder 512. The fitting block 513 and the U-shaped frame 511 are fixedly connected. A thick spring 514 is installed, and a hydraulic device 515 is fixedly mounted on a U-shaped frame 511. A clamping block 516 is fixedly mounted on the piston end of the hydraulic device 515. A hydraulic impact device 517 is fixedly mounted on the mounting frame 1. A forging hammer 518 is fixedly mounted on the piston end of the hydraulic impact device 517. A support frame 519 is fixedly mounted on the mounting frame 1. A placement groove 520 is fixedly mounted on the support frame 519. Multiple sets of slide rails 54, sliding blocks 56, casters 58, hydraulic devices 515, and clamping blocks 516 are provided. Multiple sets of casters 58 are attached to the base plate 4. The other end of the threaded rod 53 is rotatably mounted on the bracket 52. A connecting block 57 is threaded onto the threaded rod 53. A cylinder 512 is located inside the thick spring 514. The hydraulic impact device 517 and the forging hammer 518 are located directly above the placement groove 520. The upper surface of the support frame 519 is arc-shaped.
[0025] In one embodiment of the present invention, an auxiliary component 6 is provided on the mounting frame 1. The auxiliary component 6 includes a partition 61, which is fixedly mounted on the mounting frame 1. An arc-shaped groove 62 is provided on the partition 61. A guide plate 63 is fixedly mounted on the partition 61. A collection box 64 is slidably mounted on the partition 61. A handle 65 is fixedly mounted on the collection box 64. A mounting column 66 is fixedly mounted on the partition 61. A support wheel 67 is rotatably mounted on the mounting column 66. An auxiliary wheel 68 is rotatably mounted on the partition 61. Multiple sets of the partition 61, arc-shaped groove 62, guide plate 63, handle 65, mounting column 66, support wheel 67, and auxiliary wheel 68 are provided. A gap is left between the partition 61 and the support frame 519. The collection box 64 is located below the support frame 519. Multiple sets of support wheels 67 are located at the bottom of the arc-shaped groove 62. Multiple sets of auxiliary wheels 68 are attached to the bottom of the support wheel 67.
[0026] In one embodiment of the present invention, a support assembly 7 is provided on the base plate 4. The support assembly 7 includes a blocking block 71. The blocking block 71 is fixedly installed on the base plate 4. A circular groove 72 is opened on the blocking block 71. A support roller 73 is rotatably installed on the blocking block 71. An installation groove 74 is opened on the blocking block 71. One end of a short spring 75 is fixedly installed on the blocking block 71. One end of a round rod 76 is fixedly installed on the other end of the short spring 75. A buffer pad 77 is fixedly installed on the other end of the round rod 76. Multiple sets of the blocking block 71, the circular groove 72, the support roller 73, the installation groove 74, the short spring 75, the round rod 76, and the buffer pad 77 are provided. The support roller 73 is located inside the circular groove 72. The short spring 75 is located inside the installation groove 74. The round rod 76 slides inside the installation groove 74. The support roller 73 is attached to the bottom of the collection box 64. The buffer pad 77 is directly opposite the universal wheel 58.
[0027] In this application, all electrical components are electrically connected to the controller and 220V AC mains power. The controller is a conventional and known device that can control the power motor 51, servo motor 510, hydraulic equipment 515, and hydraulic impact device 517. All standard parts used in this application can be purchased from the market. The specific connection methods of each part are all conventional methods of riveting and welding that are mature in the prior art. In addition, the standard parts are all conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art.
[0028] It should be noted that the above electrical components are all existing technology products. Those skilled in the art should select, install, and complete the circuit debugging work according to the needs of use to ensure that all electrical appliances can work normally. The components are all general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. No specific restrictions are made here. The supporting structures of the hydraulic drive structure appearing in this application document, such as hydraulic tanks and hydraulic pumps, are existing equipment and will not be described in detail here.
[0029] A forging method for a large forging forging equipment includes the following steps: S1. Before forging, inspect the special forging equipment, including mounting frame 1, forging furnace 2, forging components 5, auxiliary components 6, support components 7, and heat preservation device. Confirm that the temperature control function of forging furnace 2 is normal, the power motor 51 and servo motor 510 operate smoothly, the pressure output of hydraulic equipment 515 and hydraulic impact device 517 meets the standard, the clamping block 516 is unworn, the forging hammer 518 has an intact hammer head, the arc surface of support frame 519 is smooth, the support wheel 67 and auxiliary wheel 68 rotate smoothly, the collection box 64 is undamaged, the support roller 73 is not stuck, the short spring 75 has normal elasticity, and the buffer pad 77 is not aged. After checking that all components are correct, transfer the steel ingot to the preset position next to mounting frame 1. At the same time, assemble and debug the heat preservation device to ensure that the guide rail slides smoothly and the outer diameter adjustment function is effective. S2. During the first forging operation, the power motor 51 in the forging assembly 5 is started. The power motor 51 drives the threaded rod 53 to rotate, causing the threaded connecting block 57 to slide along the slide rail 54. The connecting block 57 drives the sliding block 56 and the moving frame 59 to move. The universal wheel 58 is in contact with the base plate 4 to assist in the sliding until the U-shaped frame 511 on the moving frame 59 is aligned with the steel ingot. The hydraulic equipment 515 is started, and its piston end pushes the clamping block 516, which, together with the contact block 513, stably clamps the steel ingot. Then the steel ingot is sent into the forging furnace 2 and heated to the initial forging temperature of 1230°C. After reaching the temperature, the moving frame 59... The steel ingot is removed from the forging furnace 2 and placed in the placement slot 520 of the support frame 519. First, the hydraulic equipment 515 is started to adjust the posture of the steel ingot and complete the clamping and sprue setting operations. Then, the hydraulic impact device 517 is started, and its piston end drives the forging hammer 518 to perform upsetting treatment on the steel ingot. After that, the position of the steel ingot is adjusted again, and the forging hammer 518 is used to perform the square pulling operation. At the same time, the guide plate 63 of the auxiliary component 6 is used to assist in positioning and complete the chamfering operation. After the first forging is completed, the forging is transferred to the cooling zone through the moving frame 59. The power motor 51 and the hydraulic equipment 515 are turned off, and the forging is allowed to cool naturally. S3. During the second forging operation, after the first forging has cooled, the power motor 51 is restarted. The forging is clamped and fed into the forging furnace 2 via the moving frame 59 and clamping block 516, and heated to the initial forging temperature of 1220℃. After the temperature reaches the target, the forging is removed and placed in the placement slot 520. The servo motor 510 is started, and the servo motor 510 drives the U-shaped frame 511 to finely adjust the angle of the forging to ensure uniform force on the forging. The hydraulic impact device 517 is started first, and the forging hammer 518 is used to impact the forging. The workpiece undergoes upsetting to refine the grains and eliminate internal stress. Then, the position of the moving frame 59 is adjusted to move the workpiece along the arc surface of the support frame 519. The forging hammer 518 is used to perform a lengthening operation, so that the length of the forging gradually approaches the preset size. During the process, the support wheel 67 and auxiliary wheel 68 of the auxiliary component 6 are in contact with the surface of the forging to help the forging move smoothly. The collection box 64 collects the oxide scale generated during the forging process. After the second forging is completed, the forging is transferred to the cooling zone and the relevant equipment is turned off. S4. During the third forging operation, the forging clamping and heating process of the second forging is repeated. The cooled forging is sent into the forging furnace 2 and heated to the initial forging temperature of 1220°C. After the forging is removed, it is placed in the placement groove 520. The hydraulic impact device 517 and servo motor 510 are started. First, the forging is upset by the forging hammer 518 to ensure that the internal structure of the forging is uniform. Then, the position of the forging is adjusted, and the forging hammer 518 is used in conjunction with the guide plate 63 of the auxiliary component 6 to perform the punching operation. A hole with a preset diameter is punched in the center of the forging. Then, the forging posture is continuously adjusted, and the hole is enlarged by the forging hammer 518 to make the hole diameter meet the process requirements. After the third forging is completed, the forging is cooled to room temperature. The blanking, punching and enlarging process is completed. The oxide scale in the collection box 64 is cleaned. S5. During the fourth forging operation, the forging cooled after the third forging is clamped by the moving frame 59 and fed into the forging furnace 2, heated to the initial forging temperature of 1220℃. After the temperature reaches the target, the forging is removed and placed in the placement slot 520. The matching mandrel is installed, and the power motor 51 and servo motor 510 are started to drive the forging to move slowly along the support frame 519. At the same time, the hydraulic impact device 517 is started, and the forging hammer 518 performs a mandrel elongation operation on the forging, gradually drawing out the outer diameter of the forging. The forging is lengthened to 2080mm, then the forging hammer 518 is stopped. The position of the forging is finely adjusted by the servo motor 510. Markings are made on both ends of the forging to indicate the positions of ends A, B, and C and the key dimension references. Then the hydraulic impact device 517 is started again. With the movement of the moving frame 59, the outer circle of ends A and C of the forging is lengthened by the mandrel. The dimension is precisely controlled to 1900mm. After the fourth forging is completed, the forging is transferred to the cooling zone and the forging hammer 518 and the power motor 51 are turned off. S6. During the fifth forging operation, the forging cooled after the fourth forging is clamped and fed into the forging furnace 2, heated to the initial forging temperature of 1220℃. After the forging is removed, it is placed in the placement slot 520. The power motor 51 is started, which drives the moving frame 59 to adjust the position of the forging so that end A is aligned with the bottom of the forging hammer 518. The hydraulic impact device 517 is started, and the mandrel of end A is lengthened by the forging hammer 518, with a target outer diameter of 1400mm. At the same time, the heat preservation device is placed on end C through the guide rail next to the mounting frame 1. The outer diameter is adjusted to make the heat preservation cover fit tightly against the outer circle of end C, delaying the temperature drop of end C. When the outer diameter of end A reaches 1400mm, the forging hammer 518 is stopped, and the heat preservation device of end C is removed through the guide rail. S7. During the fifth forging operation, maintain the temperature of the forging, start the servo motor 510 to adjust the angle of the forging so that end C is aligned with the bottom of the forging hammer 518, start the hydraulic impact device 517 to elongate the mandrel at end C, and at the same time, put the heat preservation device on end A through the guide rail, adjust the outer diameter to ensure the heat preservation effect. During the process, the support wheel 67 and auxiliary wheel 68 of the auxiliary component 6 help the forging to rotate smoothly, and the collection box 64 continuously collects oxide scale. Continue to elongate end C until the outer diameter reaches 1400mm, then remove the heat preservation device at end A and stop the forging hammer 518. S8. During the fifth forging operation, start the power motor 51 to adjust the position of the forging, align end A with the bottom of the forging hammer 518 again, start the hydraulic impact device 517 to perform a second mandrel elongation on end A, with a target outer diameter of 1150mm for the blank size. At the same time, put the heat preservation device back on end C to maintain the temperature of end C through the heat preservation layer. During the process, the forging posture is finely adjusted in real time by the servo motor 510 to ensure accurate elongation. When the outer diameter of end A reaches 1150mm, remove the heat preservation device of end C and stop the forging hammer 518. S9. During the fifth forging operation, start the servo motor 510 to adjust the forging so that the C end is aligned with the bottom of the forging hammer 518. Start the hydraulic impact device 517 to perform a second mandrel elongation on the C end until the outer diameter reaches the blank size of 1990mm. After the C end is elongated, start the power motor 51 and the servo motor 510 to move the forging so that the middle large step is aligned with the forging hammer 518. The forging hammer 518 is used to elongate the middle step. The elongation amount is controlled according to the process requirements to ensure that the step size reaches the preset standard. The temperature of the forging is monitored throughout the process to ensure that the final forging temperature is 850℃. After the fifth forging is completed, the forging is transferred to the cooling zone and the power system of all forging components 5 is turned off. S10. After all forging steps are completed, first check the appearance of the forging to see if there are any cracks or folding defects. Then measure the dimensions of the forging, including the A end 1150mm, the C end 1990mm, the intermediate step dimension, and the overall length ≥7065mm. If any dimensional deviations or appearance defects are found, they are corrected by forging with the forging hammer 518. After the forging has completely cooled, clean the oxide scale in the collection box 64 and remove it with the handle 65 for cleaning. Then maintain the equipment. At the same time, disassemble and clean the insulation device, check whether the insulation layer is intact, and ensure stable performance for the next use. This completes the multi-stage temperature-controlled forging process of the thin-walled, slender, stepped nuclear island containment mechanical penetration component.
[0030] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.
Claims
1. A large forging equipment, comprising a mounting frame (1), one side of which is provided with a forging furnace (2) for heating a forging body (3), and a bottom plate (4) is fixedly installed at the bottom of the side of the mounting frame (1) away from the forging furnace (2), characterized in that: The mounting frame (1) is provided with a forging assembly (5), the forging assembly (5) comprises: A power motor (51) is fixedly installed on the bottom plate (4), a support (52) is fixedly installed on the bottom plate (4), a threaded rod (53) is fixedly installed on the output end of the power motor (51), a sliding rail (54) is fixedly installed on the bottom plate (4), a sliding block (55) is slidingly installed on the sliding rail (54), a sliding block (56) is fixedly installed on the sliding block (55), a connecting block (57) and a universal wheel (58) are fixedly installed on the bottom of the sliding block (56); A moving frame (59) is fixedly installed on the sliding block (56), a servo motor (510) is fixedly installed on the moving frame (59), a U-shaped frame (511) is fixedly installed on the output end of the servo motor (510), a cylinder (512) is fixedly installed on one end of the U-shaped frame (511), a fitting block (513) is fixedly installed on the other end of the cylinder (512), and a rough spring (514) is fixedly installed between the fitting block (513) and the U-shaped frame (511); A hydraulic device (515) is fixedly installed on the U-shaped frame (511), a clamping block (516) is fixedly installed on the piston end of the hydraulic device (515), a hydraulic impact device (517) is fixedly installed on the mounting frame (1), a forging hammer (518) is fixedly installed on the piston end of the hydraulic impact device (517), a support frame (519) is fixedly installed on the mounting frame (1), and a placing groove (520) is fixedly installed on the support frame (519).
2. The large forging apparatus according to claim 1, characterized by: The sliding rail (54), the sliding block (56), the universal wheel (58), the hydraulic device (515) and the clamping block (516) are provided in multiple groups, and the multiple universal wheels (58) are fitted on the bottom plate (4).
3. The large forging apparatus according to claim 1, characterized by: The other end of the threaded rod (53) is rotatably installed on the support (52), the connecting block (57) is threadedly installed on the threaded rod (53), the cylinder (512) is arranged in the rough spring (514), the hydraulic impact device (517) and the forging hammer (518) are arranged directly above the placing groove (520), and the upper surface of the support frame (519) is arc-shaped.
4. The large forging apparatus according to claim 1, characterized by: An auxiliary assembly (6) is arranged on the mounting frame (1), the auxiliary assembly (6) comprises a partition plate (61), the partition plate (61) is fixedly installed on the mounting frame (1), an arc-shaped groove (62) is formed in the partition plate (61), a guide plate (63) is fixedly installed on the partition plate (61), a collection box (64) is slidingly installed on the partition plate (61), a handle (65) is fixedly installed on the collection box (64), a mounting column (66) is fixedly installed on the partition plate (61), a support wheel (67) is rotatably installed on the mounting column (66), and an auxiliary wheel (68) is rotatably installed on the partition plate (61).
5. The large forging apparatus according to claim 4, characterized by: The partition plate (61), the arc-shaped groove (62), the guide plate (63), the handle (65), the mounting column (66), the support wheel (67) and the auxiliary wheel (68) are provided in multiple groups.
6. The large forge piece forging apparatus according to claim 4, characterized by: The gap is left between the partition plate (61) and the support frame (519), the collecting box (64) is arranged below the support frame (519), and a plurality of groups of the supporting wheels (67) are arranged at the bottom of the arc-shaped groove (62), and a plurality of groups of the auxiliary wheels (68) are attached to the bottom of the supporting wheel (67).
7. The large forge piece forging apparatus according to claim 1, characterized by: The bottom plate (4) is provided with a supporting assembly (7), the supporting assembly (7) comprises a blocking block (71), the bottom plate (4) is fixedly provided with the blocking block (71), a circular groove (72) is formed in the blocking block (71), a supporting roller (73) is rotatably arranged on the blocking block (71), an installation groove (74) is formed in the blocking block (71), one end of a short spring (75) is fixedly arranged on the blocking block (71), one end of a circular rod (76) is fixedly arranged on the other end of the short spring (75), and a buffer pad (77) is fixedly arranged on the other end of the circular rod (76).
8. The large forging apparatus according to claim 7, characterized by: The blocking block (71), the circular groove (72), the supporting roller (73), the installation groove (74), the short spring (75), the circular rod (76) and the buffer pad (77) are all provided with a plurality of groups.
9. The large forging apparatus according to claim 7, characterized by: The supporting roller (73) is arranged in the circular groove (72), the short spring (75) is arranged in the installation groove (74), the circular rod (76) slides in the installation groove (74), the supporting roller (73) is attached to the bottom of the collecting box (64), and the buffer pad (77) faces the universal wheel (58).
10. A method of forging according to the apparatus for forging a heavy forging according to any one of claims 1 to 9, characterized by, The method comprises the following steps: S1, before forging, check the mounting frame (1), the forging furnace (2) and the special equipment of the forging assembly (5), confirm the temperature control and the operation of the power motor (51), the pressure output and the integrity of each part, after checking, transfer the steel ingot to the preset position, assemble and debug the heat preservation device to ensure normal function; S2, first fire forging, start the power motor (51) to drive the part to move, align the U-shaped frame (511) with the steel ingot, the hydraulic equipment (515) drives the clamping block (516) to clamp the steel ingot, and the steel ingot is sent into the forging furnace (2) and heated to 1230 DEG C, then removed and placed in the placing groove (520), adjust the posture to complete the pressing of the handle and the wrong water gap, the hydraulic impact device (517) drives the forging hammer (518) to upset and draw four squares, the auxiliary assembly (6) assists positioning, and after completion, transfer to the cooling area and close the related equipment; S3, second fire forging, after the forging is cooled, the power motor (51) drives the part to clamp the forging and send it into the forging furnace (2) and heat it to 1220 DEG C, then remove it and place it in the placing groove (520), the servo motor (510) fine tunes the angle of the forging, the hydraulic impact device (517) drives the forging hammer (518) to upset, the moving frame (59) adjusts the length of the forging hammer (518), the auxiliary assembly (6) assists in moving and collecting the oxide skin, and after completion, moves to the cooling area and closes the related equipment; S4, the third fire forging, repeat the second fire clamping and heating process, heated to 1220 ℃ after moving out placed in the groove (520), hydraulic impact device (517) and servo motor (510) cooperation, upsetting hammer (518) forging, adjust the position of the guide plate (63) punching, hole expansion, after the completion of the forging cooling to room temperature, cleaning collection box (64) inside the scale; S5, the fourth fire forging, clamping the third fire cooling forging into the forging furnace (2) heating to 1220 ℃, move out and install the core rod in the groove (520), power motor (51) and servo motor (510) driven forging movement, hydraulic impact device (517) driven forging hammer (518) core rod lengthening to the outer diameter of 2080 mm, fine-tune the position of the two ends of the forging, continue to core rod lengthening A, C end to the outer diameter of 1900 mm, after the completion of the move to the cooling area and close the related equipment; S6, the fifth fire forging, clamping the fourth fire cooling forging into the forging furnace (2) heating to 1220 ℃, move out and place in the groove (520), power motor (51) adjust the forging to make A end align with the forging hammer (518), hydraulic impact device (517) driven forging hammer (518) core rod lengthening A end to the outer diameter of 1400 mm, while using the heat preservation device to heat the C end, after reaching the standard, remove the heat preservation device and stop the forging hammer (518); S7, the fifth fire forging, keep the temperature of the forging, servo motor (510) adjust the forging to make C end align with the forging hammer (518), hydraulic impact device (517) driven forging hammer (518) core rod lengthening C end, while using the heat preservation device to heat the A end, auxiliary assembly (6) auxiliary rotation and collect the scale, after reaching the standard, remove the heat preservation device and stop the forging hammer (518); S8, the fifth fire forging, power motor (51) adjust the forging to make A end align with the forging hammer (518), hydraulic impact device (517) driven forging hammer (518) secondary core rod lengthening A end to the blank size of 1150 mm, while using the heat preservation device to heat the C end, servo motor (510) fine-tune the posture, after reaching the standard, remove the heat preservation device and stop the forging hammer (518); S9, the fifth fire forging, servo motor (510) adjust the forging to make C end align with the forging hammer (518), hydraulic impact device (517) driven forging hammer (518) secondary core rod lengthening C end to the blank size of 1990 mm, then adjust the forging to make the middle step align with the forging hammer (518), lengthen the step to the preset standard, monitor the final forging temperature of 850 ℃, after the completion of the move to the cooling area and close the power system of the forging assembly (5); S10, after all the forging steps are completed, check the appearance and size of the forging, the size includes A end 1150 mm, C end 1990 mm, if there is a problem, then supplement the forging correction, after the complete cooling of the forging, clean the collection box (64), disassemble and clean the heat preservation device and check the heat preservation layer, complete the whole forging process.