320 results about "Remanufacturing" patented technology

The invention belongs to the technical field of permanent magnetization remanufacturing, and particularly relates to a permanent magnetization regeneration method for a waste motor of copper alloy wire processing equipment, and the method comprises the steps: disassembling a waste asynchronous motor, and reserving a case, a stator, a rotor core and a rotating shaft which are not damaged; the specifications of the air injection channels are determined according to the diameter of the rotating shaft, more than two air injection channels are arranged on the rotating shaft at equal-angle intervals, and then the rotating shaft is installed in the machine shell; the rotor core is split to obtain steel sheets, and permanent magnet grooves, magnetic isolation air grooves and air injection channel grooves are formed in the steel sheets; the permanent magnets are assembled in the permanent magnet grooves, then the steel sheets are laminated according to a first rule to obtain a rotor, and then the rotor is assembled to the rotating shaft; a rear end cover of the machine shell is removed, a heat dissipation machine cover is manufactured according to the diameter of the rear end cover, a bearing groove and an air outlet hole are formed in the heat dissipation machine cover, and then the heat dissipation machine cover is assembled to the machine shell; and a frequency converter is additionally arranged on the shell. The remanufactured permanent magnet synchronous motor manufactured by the method has better sealing performance and heat dissipation performance.

The invention provides a full-laser multi-energy-field remanufacturing device and method, and relates to the technical field of laser cladding remanufacturing, and the full-laser multi-energy-field remanufacturing device comprises a laser system, an energy field auxiliary system, a powder conveying system, a monitoring system and an intelligent management and control system; the energy field auxiliary system comprises a magnetic field generation unit and an ultrasonic vibration unit; the monitoring system is used for collecting multi-source sensing data reflecting the state of the molten pool in real time; the intelligent management and control system comprises a machine learning digital twinning module used for acquiring historical process data and receiving and performing analysis and prediction based on multi-source sensing data and the historical process data so as to generate a dynamic cooperative control instruction; and the numerical control execution module is used for receiving the control instruction and performing real-time feedback adjustment on the technological parameters of the laser system and the technological parameters of the magnetic field generation unit, the ultrasonic vibration unit and the powder conveying system according to the control instruction. And real-time and dynamic collaborative feedback regulation and control on a plurality of process units such as laser, a magnetic field, an ultrasonic field and powder feeding are realized.

The invention provides a preparation method of a high-temperature wear-resistant high-entropy alloy layer with a heterostructure, and belongs to the technical field of metal materials and surface engineering thereof. According to the method, a CoCrFeNiTi high-entropy alloy cladding layer is deposited on the surface of a base body through the laser cladding technology, and the thickness of the cladding layer is controlled to be 0.5-2 mm. The component of the cladding layer is CoCrFeNiTi, the atomic ratio content of Ti is controlled not to exceed 8%, so that the structure of the cladding layer is an FCC phase, and cracking of the cladding layer induced by precipitation of a BCC phase is avoided. A high-entropy alloy cladding layer is heated to 550-950 DEG C and subjected to heat preservation for 2-4 h for annealing treatment, alloy elements in the cladding layer are promoted to be separated out, and small heterogeneous strengthening phases such as a Ni3Ti phase and a laves phase are generated in situ. According to the method, a heterogeneous strengthening structure is formed under the condition of not adding exogenous elements, the strength and hardness and high-temperature wear resistance of the cladding layer are greatly enhanced, the method has the advantages of being simple in process, low in cost, high in applicability and the like, and an effective technical scheme is provided for repairing and remanufacturing of the high-entropy alloy.

The present disclosure provides for an automated wire harness diagnosis system and process for measuring the electrical characteristics of a wire harness in order to provide an estimate of the useful lifespan of the wire harness. Embodiments described herein may be deployed in a remanufacturing environment or in a manufacturing environment to provide statistically based estimates of the remaining useable lifetime of the wire harness, thus allowing to reduce costs and waste when producing wire harnesses within a circular economy environment.

The invention discloses a digital twin-driven data-enhanced aviation undercarriage laser shock peening monitoring method, and belongs to the field of aviation structural member remanufacturing, intelligent manufacturing and data driving regulation, and the method comprises the steps: building a fatigue evaluation system for an alternating load in an undercarriage service process, recognizing a high stress concentration region, and carrying out the recognition of a high stress concentration region; a multi-modal monitoring system is constructed, impact data is expanded by adopting a data enhancement method, an impact strengthening physical model is constructed in combination with finite element analysis, impact wave propagation and residual stress evolution are simulated, and collaborative optimization of data driving and mechanism modeling is realized in combination with an experimental data correction model. Impact quality is evaluated based on deep learning, multi-modal data is fused to analyze impact uniformity, and an enhanced abnormal region is identified. And the impact process parameters are optimized through reinforcement learning, and intelligent feedback regulation and control are achieved. According to the method, multi-modal monitoring, data enhancement, physical modeling and intelligent optimization are combined, the stability of laser shock peening is improved, and the fatigue life of laser shock peening is prolonged.

The invention discloses a man-machine collaborative additive repairing and remanufacturing method based on multi-modal perception, and belongs to the technical field of intelligent manufacturing and additive manufacturing, and the man-machine collaborative additive repairing and remanufacturing method comprises the following steps: S1, based on an additive repairing environment of a damaged part, establishing a three-dimensional grid map; s2, constructing a three-dimensional damage model based on the damage morphology data acquired by the multi-modal data acquisition module; s3, based on the three-dimensional damage model, a planned repair path and matched technological parameters thereof are obtained; and S4, based on the planned repair path, the repair equipment performs additive repair on the damaged part. According to the method, the additive repair environment three-dimensional grid map system is constructed, the repair environment and the damaged part are subjected to multi-angle scanning, and the visual sensor is synchronously adopted to collect the three-dimensional shape data of the damaged part, so that the sub-millimeter-level cooperative positioning of the repair equipment operation space and the damaged area is realized; and an accurate three-dimensional space reference is provided for subsequent repairing operation.

The utility model discloses an auxiliary device for additive remanufacturing, and relates to the technical field of additive manufacturing. The device comprises a gathering frame, a discharging box is fixedly installed at the bottom end of the gathering frame, two sets of symmetrically-distributed rotating rods are rotationally arranged in the discharging box, pressing rollers are fixedly arranged on the outer sides of the two sets of rotating rods, first gears are fixedly arranged at one ends of the two sets of rotating rods, and the multiple first gears are connected in a meshed mode. A collecting box is slidably arranged at the bottom of the discharging box, a rotating shaft is rotatably arranged on one side of the discharging box, a second gear is fixedly arranged on the outer side of the rotating shaft, and a third gear is connected to the bottom of the second gear in a meshed mode. According to the device, chippings can be extruded to be in a sheet shape through the pressing rollers, the occupied area of the chippings is reduced, meanwhile, the collecting box can move in a reciprocating mode, the chippings can be evenly distributed in the collecting box, the chippings are prevented from being accumulated at one position of the collecting box, and the cleaning frequency of workers is reduced.

The invention belongs to the technical field of laser remanufacturing and high-end equipment repairing, and particularly discloses a steam turbine rotor R angle laser cladding repairing process which is used for conducting segmented multi-layer laser cladding on a steam turbine rotor R angle to ensure that the laser cladding thickness reaches the steam turbine rotor R angle repairing thickness and has machining allowance. The thickness of each layer of laser cladding is 0.7 mm-0. 9 mm, and ultrasonic impact stress relief treatment is carried out after each section of laser cladding is completed. And PT nondestructive flaw detection, phased array ultrasonic detection, hardness detection and residual stress detection are fused to ensure the repair quality. The rotor is suitable for 530 DEG C high-temperature and high-pressure working conditions, the cost is greatly reduced compared with rotor replacement, and the rotor has remarkable industrial application value.

The hydraulic stand column remanufacturing production line comprises a cylinder body repairing production line and a hydraulic part assembling production line which are arranged on the two sides of a main channel correspondingly. The cylinder body repairing production line comprises a process joint welding area, a raw material storage area, a repairing line raw material warehousing area, an outer circular surface repairing area, an inner circular surface repairing area, a honing buffer area, a deep hole honing area and a process joint cutting area which are arranged in sequence; the hydraulic part assembly production line comprises an assembly line raw material warehousing area, an assembly line material storage area, a cylinder body cleaning area, an assembly area A, an assembly area B and an assembly finished product storage area which are sequentially arranged. Workpieces are transferred through the truss manipulator and the AGV. Automatic surface repairing operation and automatic assembling operation of the heavy-weight cylinder workpiece can be automatically achieved, the automation degree is high, the labor cost can be greatly saved, the working efficiency and the production efficiency are improved, and meanwhile the assembling quality can be effectively guaranteed.

The invention relates to the technical field of additive remanufacturing, and particularly discloses a laser composite additive remanufacturing process method which comprises the following steps: melting alloy powder through a laser cladding nozzle and spraying the alloy powder on a to-be-repaired surface to form a cladding layer; furthermore, volume damages in forms of corrosion holes, cracks, fractures and the like on the to-be-repaired part are repaired, and meanwhile, a laser impactor is used for carrying out laser impact strengthening on the cladding layer, so that the fatigue life strength of the cladding layer is improved. According to the device, a large amount of heat does not need to be input, then the influence on the mechanical property of an original to-be-repaired part can be reduced, laser shock strengthening is conducted on the cladding layer through the laser impactor, and the phenomena that the repaired layer is coarse in tissue dissimilation and unbalanced in residual stress distribution of the cladding layer are avoided.

The invention discloses a welding seam detection remanufacturing system and device for a hydraulic support, particularly relates to the technical field of mining equipment remanufacturing, and is used for solving the problems of secondary stress migration and base material cracking caused by local heat input during in-situ repair of a box type structural part. A data acquisition module is used for acquiring contour coordinates of a repair area and thickness distribution of base metal; the unit division module divides a stress buffer unit containing a heat input regulation and control subarea based on the thickness gradient and the rib plate layout; the boundary redivision module dynamically optimizes the subarea boundary through geomagnetic field gradient scanning; the heat shock control module executes layered repair welding and activates subarea heat input in sequence; the energy ratio monitoring module switches the activation sub-regions in real time according to the acoustic emission energy ratio to block microscopic plastic deformation; the stress processing module eliminates a migration stress peak value through external expansion area residual stress scanning and local thermal relaxation; the whole-process regulation and control of the stress evolution in the repairing process are realized, and the repairing safety and the service life of the box type structural member are guaranteed under the immovable working condition.

The invention belongs to the technical field of remanufacturing process, and discloses a digital twin-driven reprocessing scheduling optimization method, which comprises the following steps: initializing and generating a reprocessing initial scheduling scheme in a physical workshop, and moving the reprocessing initial scheduling scheme to a third window of a virtual workshop; based on a rolling window mechanism, moving the task which is being reprocessed currently and the task which is about to be reprocessed from the third window to the second window; if it is detected that the emergency task is inserted, all reprocessed tasks in the second window are moved to the first window; moving the emergency task to a second window; based on the target function of minimizing the total cost and the total time, a whale optimization algorithm is adopted for solving, and rescheduling schemes of all tasks in the second window are obtained; and sending the rescheduling scheme to the physical workshop for execution until no task needing rescheduling exists in the third window. According to the method, insertion of emergency tasks is considered, and rescheduling and response efficiency are considered.

The invention provides a remanufacturing workshop scheduling method based on reinforcement learning and evolutionary algorithm fusion, relates to the technical field of production scheduling optimization, and solves the problem of remanufacturing system scheduling in three stages of disassembly, reprocessing and assembly. A four-dimensional decision model covering process sorting, factory distribution, machine selection and speed gear scheduling is constructed, and an initial population with diversity and high-quality characteristics is generated by adopting a multi-strategy hybrid initialization method. A reinforcement learning decision module based on Q-learning is introduced, an optimal combination is dynamically selected from various crossover operators, mutation operators and neighborhood search strategies, the crossover probability and the mutation probability are dynamically corrected according to the distribution characteristics of the Pareto leading edge, and a dual escape mechanism is integrated to enhance the capability of the algorithm to jump out of local optimum. According to the scheme, the group search advantage of the evolutionary algorithm is exerted, the dynamic optimization of the search process is realized, and an efficient and accurate scheduling solution is provided for a complex remanufacturing system.

The invention discloses a carbon footprint accounting method for a remanufactured generator based on a remanufacturing life cycle, and relates to the technical field of generator remanufacturing, and the method comprises the steps: obtaining a corresponding remanufacturing life cycle when a generator which does not meet a use demand is remanufactured, and a remanufacturing reason which does not meet the use demand; creating a boundary model corresponding to the remanufacturing process; based on the boundary model and the remanufacturing reason, determining a carbon emission source of each stage in the remanufacturing process; and obtaining an emission factor corresponding to the carbon emission source of each stage, calculating the carbon emission of each stage based on the emission factor, and carrying out summation processing on the carbon emission of each stage to obtain the carbon footprint of the remanufacturing life cycle. The problem that in the prior art, after the generator loses original efficiency, resources are wasted when the generator is scrapped is solved, and remanufacturing of the generator losing the original efficiency is achieved so that energy can be saved.

The invention relates to the technical field of nano repair materials, in particular to a ship remanufacturing nano repair material and a preparation method and application thereof, and the nano repair material comprises the following raw materials in parts by weight: 30-35 parts of nano tungsten carbide, 25-30 parts of nano titanium carbide, 25-30 parts of nano silicon carbide, 10-15 parts of modified boron nitride powder and 6-9 parts of a carbon nanotube doping-based additive. According to the nano repairing material, nano tungsten carbide, nano titanium carbide and nano silicon carbide are blended to serve as a base body, meanwhile, the added modified boron nitride powder and the added carbon nano tube doped increasing agent are mutually blended, matched, optimized and improved, and the obtained nano repairing material product has excellent wear resistance, impact resistance and pollution resistance; the performance of the product can be harmoniously improved, and the heat-resistant, corrosion-resistant and stable effects of the product are remarkable.

The invention relates to the technical field of metal material surface engineering and equipment remanufacturing, in particular to an early acoustic emission diagnosis and laser cladding repair method for thermal fatigue cracks in a mold service process, which comprises the following steps: S1, synchronously acquiring and preprocessing multi-source heterogeneous data; stress wave signals are collected in real time through a broadband acoustic emission sensor array permanently integrated on the surface of a mold cavity, the frequency response range of the sensor is 100 kHz to 1 MHz, and the sensitivity is not lower than 95 dB. According to the method, accurate identification and positioning can be realized at the initial stage of crack initiation through multi-modal sensing fusion and a deep learning algorithm, the diagnosis accuracy is remarkably higher than that of a traditional offline detection method, and precious time is won for subsequent repair.

The invention belongs to the technical field of metallurgical equipment remanufacturing, and particularly relates to a gradient functionalized high-toughness shear blade material based on double-laser melting forging time sequence coupling and a preparation method thereof. The gradient functionalized high-toughness shear blade material is prepared from the following components in percentage by mass: 0.6 percent to 0.7 percent of C, 4.5 percent to 5.5 percent of Cr, 1.8 percent to 2.2 percent of W, 1.2 percent to 1.5 percent of Mo, 0.8 percent to 1.0 percent of V, 2.8 percent to 3.2 percent of Ti, 0.008 percent to 0.015 percent of B, 0.02 percent to 0.05 percent of Ce and the balance of Fe and inevitable impurity elements. Through a three-in-one coordinated regulation and control system of gradient material design, double-laser time sequence coupling and in-situ interface strengthening, the technical bottleneck that the hardness and the toughness of a shear blade material cannot be obtained at the same time is broken through, and the problems of tipping failure, insufficient fatigue life and the like of a traditional disc shear blade material during service are solved.

The invention is suitable for the technical field of remanufacturing of key parts of aero-engines and gas turbines, and provides a laser strengthening composite cladding high-performance repairing method for an engine supporting plate. Comprising the following steps of pretreatment and damage evaluation, uncoated laser shock peening pretreatment, composite cladding material design and preparation, coaxial powder feeding laser cladding repair, post-treatment and performance recovery and final inspection and performance evaluation. According to the method, by means of a synergistic structure of coating-free LSP pretreatment and laser cladding, a pre-compressive stress layer pre-constructed on a base body is pretreated, tensile stress generated by rapid heating and cooling in the cladding process can be effectively counteracted, and crack initiation and extension of the interior of a cladding layer and a bonding interface are inhibited from the source; meanwhile, thermal stress accumulation is further reduced through partition staggered scanning and interlayer temperature control in S4, and the crack rate of a repaired area is remarkably reduced through the dual effects; performing performance transcendental recovery; and the method is pollution-free, high in reliability and good in manufacturability.

The application discloses a WC reinforced tin-based babbitt alloy composite coating and an ultrahigh-speed laser cladding preparation method thereof, and belongs to the technical field of laser additive manufacturing and surface engineering. The coating is composed of WC particles and a SnSb11Cu6 matrix, the WC particles are uniformly and dispersedly distributed in the matrix, and the coating is free of cracks and through pores. The preparation method comprises the following steps: mixing WC particles with SnSb11Cu6 powder, drying, and then cladding on a 20 steel matrix by using an ultrahigh-speed laser cladding (EHLA) technology. Compared with a pure babbitt alloy coating, the hardness of the coating is increased by 45%, and the wear rate is reduced by 37%, the hardness and wear resistance are simultaneously improved, and the WC particle agglomeration and excessive melting are avoided, so that the coating is suitable for surface strengthening and remanufacturing of sliding bearing bushings.

The invention relates to the technical field of flange laser cladding, in particular to a flange inner wall laser cladding process parameter optimization method which introduces a least square method model containing a time-varying weight coefficient on the basis of a traditional response surface method. A dynamic response model is constructed on the basis, and the process parameters are dynamically adjusted by considering the interaction influence of the parameters in the optimal process parameter combination and the change trend of the interaction influence of the parameters along with time while the optimal process parameter combination can be obtained; compared with a traditional response surface method, the method has the advantages that the interaction weight coefficient of each parameter in the model can be dynamically adjusted along with the time change, and the optimization accuracy of the laser cladding parameters of the flange is improved. And an efficient and reliable remanufacturing solution is provided for flange repairing and strengthening in the deep sea high-pressure and high-corrosion environment, and the method has important engineering application value.

The invention relates to a hydraulic cylinder surplus value determining method, device and system, a medium and a program product. The method for determining the surplus value of the hydraulic cylinder comprises the steps that on-site collection information of the waste hydraulic cylinder is obtained, and the on-site collection information comprises at least one of the working state of the hydraulic cylinder, fault phenomenon description and surface defects; fault information of the waste hydraulic cylinder is determined according to the field collection information of the waste hydraulic cylinder, and the fault information comprises a top event fault and a bottom event fault; according to the fault information of the waste hydraulic cylinder, the maintenance and remanufacturing grade of the waste hydraulic cylinder is determined; and according to the maintenance and remanufacturing grade of the waste hydraulic cylinder, the residual value of the waste hydraulic cylinder is determined. According to the invention, the method achieves the evaluation of the residual value of the waste hydraulic cylinder, and provides a technical basis for the recycling strategy and pricing of old parts.

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.

A fuel injector sleeve for use in a remanufactured engine includes an elongate sleeve body including a clamping shoulder facing an axial direction and forming an undercut, and a sealing ridge transitioning between the undercut and an outer sleeve surface. The sealing ridge defines a sealing line radially outward of the undercut and extending circumferentially and uniformly around the longitudinal axis. The sealing line provides line contact between the sleeve and a clamping surface of a cylinder head to form a seal outboard of erosion upon the clamping surface from prior service. Related apparatus and remanufacturing methodology is also disclosed.

This invention relates to the field of laser cladding technology, specifically to a broadband coaxial laser cladding equipment, comprising a protective shell with a nozzle module fixedly connected to its surface; and a feeding module fixedly connected to the surface of the protective shell for directional conveying of a metal sheet, the metal sheet passing through the inner side of the nozzle module. This invention, by incorporating a spot shaping component, can convert a circular laser spot into a rectangular spot. Furthermore, by combining the metal sheet as the cladding material, compared to traditional circular spot and metal powder cladding methods, it effectively increases the width of a single cladding pass and the scanning coverage area per unit time. This effectively solves the problems of excessively long process cycles and low processing efficiency in the manufacturing and remanufacturing of large parts, achieving large-area rapid cladding. Simultaneously, as the cladding material is a metal sheet, it avoids the problems of high surface roughness, low powder utilization, and severe environmental pollution caused by powder adhesion.

The present application relates to the technical field of complex shape remanufacturing, in particular to a complex shape remanufacturing method and material for a desulfurization circulating pump impeller, the complex shape remanufacturing method comprising constructing a multi-modal damage intelligent mapping; synchronously preparing plasma activation and micro-texture; performing energy field coupling cladding repair; performing stress field balance shot peening strengthening; implementing gradient coating self-propagating synthesis; performing thermal-mechanical coupling precision shaping; performing micro-gap pressure infiltration sealing; and performing multi-physical field service simulation verification. The present application can significantly prolong the service cycle of key components, comprehensively enhance the comprehensive performance of anti-cavitation and erosion resistance, establish a digital twin closed loop of damage diagnosis, repair optimization and life prediction, and simultaneously realize life cycle cost control and resource saving. Not only can the present application repair failed components, but also can it rebuild a sustainable operation system.

Typically, fluids used in fracking operations erode valve seats in the fluid end of the reciprocating pump. Thus, these valve seats must frequently be replaced by new valve seats. Accordingly, a remanufacturing process is disclosed that successively cleans and / or grinds manually or mechanically at least the carbide inserts from used valve seats until the inserts are reusable. This reduces material costs and promotes efficiency and sustainability.

The invention discloses a laser cladding process method for improving hardness, wear resistance and metallurgical bonding strength based on an S element, and belongs to the technical field of metal material surface modification. In the laser cladding process, the S-containing element powder is added into the mixed powder, so that the flowing mode of a molten pool is fundamentally converted, the phenomenon that the molten pool faces downwards is generated through the Malangori effect, the fusion depth of the molten pool is increased through the phenomenon, the bonding area of a cladding layer and a base body is increased, and the metallurgical bonding strength is enhanced; due to the fact that strong convection is generated in the molten pool, grains in the molten pool are refined, a fine hard phase is formed, the abrasion resistance and hardness of a cladding layer are enhanced, the service life of the cladding layer is prolonged, and the method is suitable for the field of remanufacturing and surface strengthening of industrial parts with extremely high requirements for surface abrasion resistance, impact resistance and coating bonding strength.

The invention relates to the technical field of laser cladding, in particular to a high-precision efficient metal green repairing and remanufacturing device which comprises a laser cladding spray head, a gas cylinder, a powder feeder, a recycling assembly and a plugging assembly, and the recycling assembly communicates with the gas cylinder, the powder feeder and a spray nozzle of the laser cladding spray head. The recycling assembly is used for conveying gas in the gas cylinder into the powder feeder after passing through the nozzle, and the powder feeder is used for conveying powder into the nozzle through a powder conveying pipeline in the laser cladding spray head. According to the powder collecting scheme cooperatively constructed by the recycling assembly and the blocking assembly, the problem that powder falls off when the laser cladding spray head is shut down can be effectively solved, then the precision of metal green repairing is remarkably improved, the powder utilization rate is increased, and pollution to the environment is reduced; meanwhile, according to the scheme, the problem of laser empty burning caused when the equipment is started up can be well solved, energy loss is reduced, smooth proceeding of green repairing work is powerfully guaranteed, and the green repairing efficiency is greatly improved.

The application discloses a kind of convex rib damage additive repair methods of warship sealing frame, belong to laser additive remanufacturing technical field.The convex rib damage additive repair method of the application is divided into four parts of pretreatment, repair forming, post-processing, inspection, and repair forming is divided into straight edge laser cladding, circular arc angle pulse argon arc surfacing, and pulse argon arc surfacing is interval surfacing in partition, the plane of convex rib circular arc angle is divided into six groups of areas, first group area is carried out pulse argon arc surfacing according to the order of outer side, inner side and top surface of convex rib circular arc angle, then the second group area is carried out surfacing, and so on, until the outer side, inner side and top surface of convex rib circular arc angle are completely surfaced, and ensure that complete lap joint is realized between each area, to form corrosion-resistant layer;Interval surfacing in partition can minimize heat input to convex rib.The application can realize in-situ repair while ensuring that the substrate temperature is not higher than 100 DEG C.