A vibration mechanical forging assisted arc cladding remanufacturing method and device for large pile legs of marine engineering equipment

Abstract

The present invention discloses a vibration mechanical forging assisted arc cladding remanufacturing method for large pile legs of marine engineering equipment. In this method, during the arc cladding process, a high-hardness cemented carbide ball is used to forge the high-temperature cladding layer. By controlling the strain rate, deformation layer thickness, dynamic recovery and dynamic recrystallization processes, the coarse columnar crystals in the cladding layer are effectively eliminated, the grains are refined, irregular pore defects and residual tensile stress are reduced, the mechanical properties of the metal repair layer are improved, and the strength and plasticity are improved at the same time, so that the repair layer can also have high mechanical properties without rolling and heat treatment. In addition, the present invention can perform transverse forging in the vertical cladding direction of the cladding layer through the reciprocating vibration of the impact gun, forming a larger forging area, effectively improving the regulation effect on the microstructure of the cladding metal, more effectively achieving the shape regulation of the cladding layer metal, and improving the mechanical properties of the repair layer.

Description

Technical Field

[0001] The present invention belongs to the technical field of marine engineering equipment, and in particular relates to a vibration mechanical forging assisted arc cladding remanufacturing method and device for large-scale pile legs of marine engineering equipment. Background Art

[0002] Wind power is an important renewable, clean energy source. Compared to onshore wind power, offshore wind power has vast reserves and broader development prospects. Marine engineering equipment is crucial for the development and utilization of offshore resources. Pile legs are a key component of some marine engineering equipment. Existing offshore wind turbine installation platforms are generally equipped with large pile legs, which provide high stability and ensure the safety and accuracy of wind turbine installation. However, pile legs, exposed to long-term marine conditions, are inevitably subject to damage due to corrosion and wear. Damage to the pile legs affects the stability and safety of the equipment and may lead to safety accidents.

[0003] Offshore wind power platforms are in the marine environment for a long time. If it is possible to achieve on-site in-situ repair of failed platform components and reduce the frequency of the platform's return to dock and port for maintenance, the utilization rate of the platform can be significantly improved, creating higher economic benefits. Arc cladding has the characteristics of high deposition efficiency and is particularly suitable for the repair of medium and large-sized parts. However, during the arc cladding process, defects such as coarse columnar crystals, unfused pores, and residual tensile stress will be formed, which will reduce the performance of the remanufactured parts. However, for the remanufacturing of pile legs, whether it is on-site repair or repair after disassembly, it is difficult to perform the same rolling and heat treatment process on the repair layer, and it is difficult to achieve significant optimization of the microstructure of the cladding layer. In addition, the current rolling and special energy field assisted arc cladding equipment has a relatively complex structure and relatively high cost, which is not convenient for flexible on-site construction. Summary of the Invention

[0004] The purpose of the present invention is to address the above problems and provide a vibration mechanical forging assisted arc cladding remanufacturing method and device for large pile legs of marine engineering equipment.

[0005] The purpose of the present invention can be achieved by adopting the following technical solutions:

[0006] A vibration mechanical forging assisted arc cladding remanufacturing method for a large pile leg of marine engineering equipment comprises the following steps:

[0007] S1: After the pile legs are lifted or lowered to a fixed position, a pile-circling movement system is arranged around the pile legs, including a circular guide rail, a trolley, and a manipulator;

[0008] S2: Detect around the pile legs to find the damaged area of ​​the pile legs and further detect the defects and depth at the damaged location;

[0009] S3: Grind and clean the damaged area to remove the damaged matrix, deep defects and residual materials;

[0010] S4: Use vibration mechanical forging to assist arc cladding to deposit a metal layer in the damaged area. Through multiple round trips, the damaged area is completely filled.

[0011] S5: Grind the area after arc surfacing to restore the original size of the pile leg;

[0012] As a preferred solution, the specific steps of step S2 are:

[0013] 2.1) Check the dimensions of the pile legs and locate the damaged parts of the pile legs;

[0014] 2.2) Detect the damaged position of the pile leg and obtain the crack length and depth at the damaged position.

[0015] As a preferred solution, the specific steps of step S3 are:

[0016] 3.1) Grind the damaged area of ​​the pile leg to remove the damaged matrix and internal cracks;

[0017] 3.2) Clean the damaged area after grinding to remove residue.

[0018] As a preferred solution, the specific steps of step S4 are:

[0019] 4.1) Use finite element method to model the damaged pile leg and calculate the temperature change of the cladding layer over time during arc cladding;

[0020] 4.2) According to the temperature change curve of the deposited layer, adjust the distance between the vibration machine forging position and the deposited welding wire so that the vibration forging acts on the high temperature area of ​​the deposited layer;

[0021] 4.3) Start the vibration mechanical forging assisted arc cladding remanufacturing process, and completely restore the damaged area through back and forth cladding.

[0022] As a preferred solution, in step S4, the vibration mechanical forging and the arc cladding are started simultaneously, and the temperature of the cladding layer at the vibration forging position is above the recrystallization temperature of the cladding metal.

[0023] As a preferred solution, the vibration mechanical forging uses a carbide ball with a diameter of 2-8 mm, and the diameter of the ball is smaller than the distance between the spray gun and the welding wire axis.

[0024] As a preferred solution, the vibration mechanical forging pressure is 0.5-10 MPa, and the vibration frequency is 1-10 Hz.

[0025] A device for remanufacturing large pile legs of marine engineering equipment using vibration mechanical forging assisted arc cladding, comprising a pile-leg movement system, a manipulator, a laser three-dimensional scanning detection system, an X-ray flaw detector, a grinding wheel control system, a cleaning system, an arc cladding control system, a vibration mechanical forging control system, and a controller; the pile-leg movement system controls the manipulator's movement state around the pile; the manipulator drives the laser three-dimensional scanning detection system, the X-ray flaw detector, the cleaning system, the arc cladding control system, and the vibration mechanical forging control system to move; and the controller controls the operating states of the laser three-dimensional scanning detection system, the X-ray flaw detector, the cleaning system, the arc cladding control system, and the vibration mechanical forging control system.

[0026] As a preferred solution, the laser three-dimensional scanning detection system is used to detect the external dimensions of the pile legs;

[0027] As a preferred solution, the X-ray flaw detector is used to detect cracks inside the metal matrix of the pile leg;

[0028] As a preferred solution, the cleaning system is used to clean the polished metal substrate of the pile leg;

[0029] As a preferred solution, the arc cladding control system is used to deposit a metal layer on the damaged area of ​​the pile leg;

[0030] As a preferred solution, the vibration mechanical forging control system is used to perform multi-directional forging processing on the high-temperature arc cladding layer, causing the cladding layer to undergo plastic deformation.

[0031] As a preferred solution, the leg orbiting system includes a driving device, a guide rail and a trolley mounted on the guide rail, and the driving device drives the trolley to move on the guide rail.

[0032] As a preferred solution, the arc cladding control system and the vibration mechanical forging control system are started synchronously, and the arc cladding welding gun and the vibration mechanical forging impact gun move forward at the same speed.

[0033] As a preferred solution, the controller is a computer.

[0034] The implementation of the present invention has the following beneficial effects:

[0035] 1. The present invention utilizes high-hardness carbide balls to forge the high-temperature cladding layer during the arc cladding process. By controlling the strain rate, deformation layer thickness, dynamic recovery, and dynamic recrystallization processes, the coarse columnar crystals in the cladding layer are effectively eliminated, the grains are refined, irregular pore defects and residual tensile stress are reduced, and the mechanical properties of the metal repair layer are improved, achieving simultaneous improvement in strength and plasticity, so that the repair layer can also have high mechanical properties without rolling and heat treatment. Compared with existing rolling-assisted arc cladding, laser forging-assisted arc cladding, special energy field-assisted arc cladding and other technologies, vibration mechanical forging-assisted arc cladding does not require complex auxiliary equipment, has low cost, low energy consumption, and strong environmental adaptability. It can be industrialized and promoted, and can be applied to on-site in-situ remanufacturing of large components.

[0036] 2. The present invention can perform transverse forging in the vertical direction of the deposited layer through the reciprocating vibration of the impact gun, forming a larger forging area, effectively improving the control effect of the microstructure of the deposited metal, more effectively realizing the shape control of the deposited layer metal, and improving the mechanical properties of the repair layer.

[0037] 3. The forging pressure of the present invention influences the thickness and strain rate of the plastic deformation layer of the cladding layer, thereby effectively affecting the microstructure within the cladding layer. The forging pressure can be adjusted over a wide range. Compared with processes such as ultrasonic-assisted and laser forging, vibration-assisted forging produces greater forces and a deeper depth of influence in the cladding layer. Therefore, vibration-assisted arc cladding significantly regulates the microstructure of the repair layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 The present invention is a flowchart of a method for remanufacturing large pile legs of marine engineering equipment by using vibration mechanical forging assisted arc cladding.

[0040] Figure 2 It is a structural schematic diagram of the device of the vibration mechanical forging assisted arc cladding remanufacturing method of large pile legs of marine engineering equipment of the present invention.

[0041] Figure 3 It is a processing schematic diagram of the arc cladding control system 6 and the vibration mechanical forging control system 7 of the device of the vibration mechanical forging assisted arc cladding remanufacturing method of large-scale pile legs of marine engineering equipment of the present invention.

[0042] Figure 4It is a schematic diagram of the cladding layer processed by the arc cladding control system 6 and the vibration mechanical forging control system 7 of the device of the vibration mechanical forging assisted arc cladding remanufacturing method of large-scale pile legs of marine engineering equipment of the present invention. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] Example

[0045] Reference Figure 1 and Figure 2 This embodiment relates to a vibration mechanical forging assisted arc cladding remanufacturing method for large pile legs of marine engineering equipment, comprising the following steps:

[0046] S1: Arrangement of the movement system: After the pile legs are raised or lowered to a fixed position, the pile movement system is arranged around the pile legs, including a circular guide rail, a trolley, and a manipulator;

[0047] S2: Locating the damaged area: Detecting around the pile leg to find the damaged area, and further detecting the defects and depth at the damaged location;

[0048] S3: Pretreatment of damaged areas: grinding and cleaning the damaged areas to remove damaged matrix, deep defects and residual materials;

[0049] S4: Damaged area repair: Using vibration mechanical forging assisted arc cladding to deposit a metal layer in the damaged area, and through multiple round trips, the damaged area is completely filled;

[0050] S5: Post-repair processing: grinding the area after arc surfacing to restore the original size of the pile leg 10;

[0051] The specific steps of step S2 are:

[0052] 2.1) Detecting the external dimensions of the pile leg 10 and locating the location of damage to the pile leg 10; specifically, using a three-dimensional laser scanner to detect the external dimensions of the cylindrical pile leg, importing the data into a computer, analyzing the data, and comparing it with the designed dimensions of the pile leg to locate the location of the damage to the pile leg;

[0053] 2.2) Detect the damaged location of the pile leg to obtain the length and depth of the crack at the damaged location. Specifically, use an X-ray flaw detector 4 to detect cracks at the damaged location of the pile leg 10, import the data into a computer, analyze and determine the crack length and depth;

[0054] 3. The method for remanufacturing large-scale pile legs of marine engineering equipment by vibration mechanical forging assisted arc cladding according to claim 1, characterized in that the specific steps of step S3 are:

[0055] 3.1) Grinding the damaged area of ​​the pile leg 10 to remove the damaged matrix and internal cracks; specifically, using a grinding wheel to grind the damaged area to remove the damaged matrix and internal cracks;

[0056] 3.2) Cleaning the damaged area after grinding to remove residues. Specifically, anhydrous ethanol is introduced into the high-pressure cleaning system 5 as a cleaning medium to clean the damaged area after grinding to remove residues.

[0057] The specific steps of step S4 are:

[0058] 4.1) Use finite element method to model the damaged pile leg and calculate the temperature change of the deposited layer over time during arc cladding. Specifically, use finite element method to establish a pile leg damage model and simulate the temperature change of a single layer of metal deposited layer as the molten pool moves forward under ambient temperature conditions, and provide a temperature change curve.

[0059] 4.2) According to the temperature change curve of the deposited layer, adjust the distance between the vibration machine forging position and the deposited welding wire so that the vibration forging acts on the high temperature area of ​​the deposited layer;

[0060] 4.3) The vibration mechanical forging assisted arc cladding remanufacturing process begins, and the damaged area is fully restored through reciprocating cladding. During operation, the vibration mechanical forging system and the arc cladding system are simultaneously activated, and the robot is used to control the process. After multiple reciprocating cladding cycles, the damaged area is fully restored.

[0061] Specifically, the vibration mechanical forging and arc cladding are turned on at the same time, so that the vibration mechanical forging can form an auxiliary arc cladding process, and the temperature of the cladding layer at the forging position of the impact ball 77 is in a higher temperature zone, which can realize the forging forming of the cladding layer metal. During the cladding process, the weld bead is formed in a convex arc shape, and local impact forging is performed on the top of the weld bead, and the processing range is also limited. The reciprocating vibration of the impact gun 73 realizes a large-scale forging process of the cladding layer in the vertical cladding direction of the single-pass cladding layer, and the microstructure can be better controlled; when forging is performed in the area above the recrystallization temperature, the metal cladding layer is easy to deform, and the strain rate and deformation layer thickness of the cladding layer can be better controlled, thereby controlling the microstructure. The auxiliary cladding method helps to eliminate the coarse columnar crystals inside the cladding layer, eliminate pore defects, reduce residual tensile stress, and store large strain energy, thereby promoting the subsequent non-uniform nucleation of the cladding layer.

[0062] Vibration mechanical forging uses carbide balls with a diameter of 2-8mm. On the one hand, smaller impact particles are very likely to cause erosion of the metal in the deposited layer. On the other hand, it is difficult to control the rebound direction of small-particle impact balls, which can easily destroy the stability of the molten pool and even embed into the deposited layer. Balls with larger diameters avoid embedding the balls in the deposited layer and causing erosion of the deposited layer, thereby increasing the forging effect. The diameter of the alloy ball is smaller than the distance between the axis of the impact gun and the welding gun, avoiding the impact of the impact ball on the deposition process. The outlet diameter of the impact gun 73 is close to the diameter of the impact ball, so that the carbide ball can be ejected at the maximum speed. The hardness of the carbide ball is high, and the impact forging effect on the deposited layer is more significant.

[0063] The vibration mechanical forging control system 7 operates at a pressure of 0.5-10 MPa and a vibration frequency of 1-10 Hz. By adjusting the impact pressure and vibration frequency, the strain rate and thickness of the deposited metal can be adjusted, thereby increasing the lateral forging range of the deposited layer and the forgeable temperature range of the deposited layer. This improves the feasibility of the vibration mechanical forging-assisted arc cladding remanufacturing method for depositing different materials under different environments.

[0064] This embodiment also provides a device for a vibration mechanical forging assisted arc cladding remanufacturing method for large pile legs of marine engineering equipment, such as Figures 2 to 4 As shown, the system includes a pile-circling leg movement system 1, a manipulator 2, a laser 3D scanning detection system 3, an X-ray flaw detector 4, a grinding wheel control system 45, a cleaning system 5, an arc cladding control system 6, a vibration mechanical forging control system 7, and a controller 8. The pile-circling leg movement system 1 controls the manipulator 2's movement around the pile; the manipulator 2 drives the laser 3D scanning detection system 3, the X-ray flaw detector 4, the grinding wheel control system 45, the cleaning system 5, the arc cladding control system 6, and the vibration mechanical forging control system 7; and the controller 8 controls the operating states of the laser 3D scanning detection system 3, the X-ray flaw detector 4, the grinding wheel control system 45, the cleaning system 5, the arc cladding control system 6, and the vibration mechanical forging control system 7. The controller 8 is a computer. The grinding control system 45 includes a grinding wheel 451 and a controller 452 for controlling the operating state of the grinding wheel 451.

[0065] The laser three-dimensional scanning detection system 3 is used to detect the external dimensions of the pile leg 10;

[0066] The X-ray flaw detector 4 is used to detect cracks inside the metal matrix of the pile leg 10;

[0067] The cleaning system 5 is used to clean the polished metal base of the pile leg 10;

[0068] The arc cladding control system 6 is used to deposit a metal layer on the damaged area of ​​the pile leg 10;

[0069] The vibration mechanical forging control system 7 is used to perform multi-directional forging processing on the high-temperature arc cladding layer, causing the cladding layer to undergo plastic deformation.

[0070] The laser three-dimensional scanning detection system 3, the X-ray flaw detector 4, the grinding control system 45, the high-pressure cleaning control system 5, the arc cladding control system 6, and the vibration mechanical forging control system 7 can be started through computer control.

[0071] The system 1 for moving around a pile leg 10 includes a drive device 11, a guide rail 12, and a trolley 13 mounted on the guide rail 12. The drive device 11 drives the trolley 13 along the guide rail 12. During operation, a circular track is arranged around the pile leg 10, and the trolley 13 is placed on the guide rail 12. The drive device 11 controls the trolley 13 to move at a constant speed along the guide rail 12. The system 1 for moving around a pile leg 10 enables comprehensive inspection and repair of the pile leg 10.

[0072] The three-dimensional laser scanning detection system 3 includes a three-dimensional laser scanning detection head 31 and a three-dimensional laser scanning controller 32 . The three-dimensional laser scanning controller 32 is connected to the three-dimensional laser scanning detection head 31 .

[0073] The X-ray flaw detector 4 includes an X-ray flaw detector probe 41 and an X-ray flaw detection controller 42 . The X-ray flaw detection controller 42 is connected to the X-ray flaw detector probe 41 .

[0074] The cleaning system 5 includes an industrial alcohol container 51, a high-pressure cleaning spray gun 52, and a high-pressure cleaning controller 53. The industrial alcohol container 51 provides anhydrous ethanol to the high-pressure cleaning spray gun 52. The high-pressure cleaning controller 53 controls the working state of the high-pressure cleaning spray gun 52.

[0075] The arc cladding control system 6 includes a wire feeding system 61, a welding gun 62, a shielding gas cylinder 63 and a power control system 64. The wire feeding system 61 supplies welding wire to the welding gun 62, the shielding gas cylinder 63 supplies shielding gas to the welding gun 62, and the power control system 64 controls the working state of the welding gun 62.

[0076] The vibration machine forging control system 7 includes an air compressor 71, an impact gun vibration system 72, an impact gun 73, a nickel-based high-temperature alloy baffle 74, an impact ball container 75 and a vibration machine forging controller 76. The impact ball container 75 stores impact balls 77

[0077] The arc cladding control system 6 and the vibration mechanical forging control system 7 start working synchronously, and the arc cladding welding gun 62 and the vibration mechanical forging impact gun 73 move forward at the same speed. After the damaged part of the pile leg 10 is located and pretreated, repair begins. The arc cladding power supply control system and the vibration mechanical forging control system 7 must be started synchronously, and the welding gun 62 and the impact gun 73 move forward at the same speed. This ensures that the impact forged cladding layer is always in the same temperature zone and avoids the occurrence of uneven microstructure. Under the action of the impact gun vibration system 72, the impact gun 73 moves left and right, which can achieve forging of the cladding layer over a large range in the perpendicular cladding direction.

[0078] During operation, the distance between the welding gun 62 of the arc cladding control system 6 and the impact gun 73 of the vibration mechanical forging control system 7 is generally controlled to between 4 and 20 mm, ensuring that the cladding layer at the forging location remains in the high-temperature zone. The impact gun 73 moves left and right a distance of 0 to 3 mm perpendicular to the cladding direction. The frequency range of the impact gun vibration system 72 is 1 to 10 Hz, and the pressure of the impact gun 73 is 0.5 to 10 MPa. The diameter of the impact ball 77 is 2 to 8 mm. The forging parameters are adjusted according to the forging effect to optimize the microstructure of the repair layer as much as possible, suitable for repairing different metal substrates.

[0079] During operation, the wire feed system 61 feeds the welding wire 611 into the welding gun 62, forming an arc between the welding gun 62 and the base of the leg 10. Under the action of the arc, the welding wire 611 melts to form molten droplets 613, which are transferred to the base of the leg 10 to form a molten pool 614. The shielding gas 616 isolates the surrounding air and prevents oxidation of the molten pool. The molten pool cools to form a weld bead 612 of the cladding layer. The impact gun 73 of the vibration mechanical forging control system 7 ejects impact balls 77 (carbide balls) to impact forge the high-temperature cladding layer, forming a thick deformation zone 78 at the impact forging location. The strain, dynamic recovery, and dynamic recrystallization of the cladding layer occur simultaneously, and the microstructure evolves. In addition, when the cladding layer deforms, it stores a large amount of strain energy, which can promote non-uniform nucleation and refine the grain size during the subsequent deposition of the cladding layer. Under the action of the vibration system, the impact gun 73 moves left and right perpendicular to the cladding direction, forming a wide impact forging area 615 in the cladding layer.

[0080] The present invention combines a vibration mechanical forging control system 7 and an arc cladding control system 6. Compared with existing rolling-assisted arc cladding, laser forging-assisted arc cladding, special energy field-assisted arc cladding and other systems, it has lower costs and is particularly suitable for on-site in-situ repair and remanufacturing of large equipment parts. The use of mechanical forging to perform high-temperature in-situ forging of the high-temperature cladding layer can achieve the same effect as laser forging-assisted arc cladding and special energy field-assisted arc cladding technologies, and is more effective in regulating the strain rate of the cladding layer and the thickness of the deformation layer. By adding a vibration system to the mechanical forging system, the impact gun, with the assistance of the vibration system, increases the forging area, which has obvious advantages in regulating the morphology of the cladding layer.

[0081] The above disclosure is only a preferred embodiment of the present invention and certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A vibration mechanical forging assisted arc cladding remanufacturing method for large pile legs of marine engineering equipment, characterized in that: The following steps are involved: S1: After the pile legs are lifted or lowered to a fixed position, a pile-circling movement system is arranged around the pile legs; S2: Detect around the pile legs to find the damaged area of ​​the pile legs and further detect the defects and depth at the damaged location; S3: Grind and clean the damaged area to remove the damaged matrix, deep defects and residual materials; S4: Use vibration mechanical forging to assist arc cladding to deposit a metal layer in the damaged area. Through multiple round trips, the damaged area is completely filled. S5: Grind the area after arc surfacing to restore the original size of the pile leg; The specific steps of step S4 are: 4.1) Use finite element method to model the damaged pile leg and calculate the temperature change of the deposited layer over time during arc deposition; 4.2) According to the temperature change curve of the deposited layer, adjust the distance between the vibration machine forging position and the deposited welding wire so that the vibration forging acts on the high temperature area of ​​the deposited layer; 4.3) Start the vibration mechanical forging assisted arc cladding remanufacturing process, and completely restore the damaged area through reciprocating cladding; In step S4, the vibration mechanical forging and arc cladding are started simultaneously, and the temperature of the cladding layer at the vibration forging position is above the recrystallization temperature of the cladding metal; The arc cladding control system and the vibration mechanical forging control system start working synchronously, and the arc cladding welding gun and the vibration mechanical forging impact gun move forward at the same speed; Vibration mechanical forging uses a carbide ball with a diameter of 2-8mm. The diameter of the ball is smaller than the distance between the spray gun and the welding wire axis. Under the action of the impact gun vibration system, the impact gun moves left and right, and performs horizontal forging in the vertical direction of the deposited layer to form a larger forging area.

2. The method for remanufacturing large pile legs of marine engineering equipment by vibration mechanical forging assisted arc cladding according to claim 1, characterized in that: The specific steps of step S2 are: 2.1) Check the dimensions of the pile legs and locate the damaged parts of the pile legs; 2.2) Detect the damaged position of the pile leg and obtain the crack length and depth at the damaged position.

3. The method for remanufacturing large pile legs of marine engineering equipment by vibration mechanical forging assisted arc cladding according to claim 1, characterized in that: The specific steps of step S3 are: 3.1) Grind the damaged area of ​​the pile leg to remove the damaged matrix and internal cracks; 3.2) Clean the damaged area after grinding to remove residue.

4. The method for remanufacturing large pile legs of marine engineering equipment by vibration mechanical forging assisted arc cladding according to claim 1, characterized in that: The forging pressure of the vibration machine is 0.5-10MPa, and the vibration frequency is 1-10Hz.

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