CN118848252A - Device and method for in-situ repair of complex space-oriented laser-arc coaxial fuse - Google Patents

Abstract

The invention relates to the field of laser welding, in particular to a device and a method for in-situ repair of a complex space laser-arc coaxial fuse wire, wherein a laser channel which is positioned at the periphery of a wire feeding pipe and is used for a laser beam to pass through is formed on a laser-arc composite cladding head, the laser channel is provided with a light path adjusting mechanism, and the light path adjusting mechanism is used for converging a plurality of laser beams on the surface of a workpiece to be repaired and a welding wire and adjusting the position of a converging point of the laser beams and the welding wire; the laser-electric arc composite cladding head also comprises a telescopic adjusting mechanism for adjusting the distance between the air nozzle of the annular air nozzle and the surface of the workpiece to be repaired. The laser and welding wire converging point is adjusted to solve the technical problem that a conventional welding head cannot directly heat the internal corners of complex components or narrow spaces, and molten welding materials cannot directly cover damaged positions.

Description

Device and method for in-situ repair of complex space-oriented laser-arc coaxial fuse

Technical Field

The invention relates to the field of laser welding, in particular to a device and a method for in-situ repair of a complex space-oriented laser-arc coaxial fuse.

Background

The additive repairing is based on additive manufacturing technology, takes damaged parts as research objects, combines a three-dimensional digital model, piles and weaves deposited materials layer by layer, and mainly recovers or improves the geometric shape and mechanical property of failed parts and wrought parts from no technology for manufacturing three-dimensional entities. In contrast to conventional subtractive manufacturing methods, additive manufacturing typically uses wire or powder as a feedstock, selectively melted by a concentrated heat source, incrementally manufactured layer by layer, and solidified in subsequent cooling to form a part. In the laser-arc composite additive process, the introduction of laser can greatly improve the stability of an arc, and the stable generation of the arc can be ensured even in the high-speed forming process. According to the method and the system for manufacturing the multi-wire rapid additive by the laser coaxial induction multi-TIG arc disclosed in the Chinese patent publication No. CN116000457B, a multi-heat source multi-wire collaborative additive scheme is adopted, besides the laser coaxial induction scheme, the multi-TIG arc is introduced, the laser heat sources, the multi-TIG arc heat sources and the multi-wire coaxial output mode are adopted, the plurality of TIG arc heat sources are alternately and uniformly distributed at intervals along the circumferential direction of the laser heat sources, and one welding wire is arranged between at least two intervals, so that each welding wire has a heat source matched with the welding wire, the wire feeding speed of each welding wire can be improved during additive manufacturing, the multi-heat source multi-wire co-melting pool rapid additive manufacturing is realized, the welding wire deposition efficiency is improved, and further the large-scale complex structural member additive manufacturing can be realized.

Most of the additive manufacturing processes of complex components are the manufacturing processes of layer-by-layer covering materials, the front end of a welding head (cladding head) can be close to the surface of the component as much as possible, but in the field of additive repair, the front end of a conventional welding head cannot be close to the surface of a bow to be repaired at a short distance at the damaged part of the existing workpiece. For example, when damage occurs at the internal corner of a component or in a narrow space, the laser and welding wire collecting point is fixed and cannot be adjusted in the technical scheme disclosed in the Chinese patent publication No. CN116000457B, so that the damaged part of the workpiece to be repaired cannot be directly heated, and even the melted welding material cannot directly reach the damaged part of the workpiece, namely the complex component in-situ repair operation cannot be satisfied.

Based on the defects existing in the prior art, the patent application provides a device and a method for in-situ repair of a complex space laser-arc coaxial fuse, which aim at the technical problem that a conventional welding head cannot directly heat the internal corner of a complex component or a narrow space, and the melted welding material cannot directly cover the damaged part in the repair operation of the complex component.

Disclosure of Invention

Aiming at the problems, the device and the method for in-situ repair of the complex space laser-arc coaxial fuse wire are provided, and the technical problem that a conventional welding head cannot directly heat or melt welding materials at the internal corners of complex components or narrow spaces cannot directly cover damaged parts is solved by adjusting the collecting point of laser and welding wires.

In order to solve the problems in the prior art, the invention provides a device for in-situ repair of a complex space-oriented laser-arc coaxial fuse, which comprises a welding robot, wherein a laser-arc composite cladding head for coaxially compositing welding wires, lasers, arcs and shielding gas is arranged on the welding robot;

The laser-arc composite cladding head forms a wire feeding pipe for feeding welding wires, and the wire feeding pipe is provided with a conductive block for generating an arc;

The laser-electric arc composite cladding head is also provided with a laser channel which is positioned at the periphery of the wire feeding pipe and used for the laser beam to pass through, the laser channel is provided with a light path adjusting mechanism, and the light path adjusting mechanism is used for converging a plurality of laser beams with the welding wire on the surface of the workpiece to be repaired and adjusting the position of the converging point of the laser beams with the welding wire;

The laser-electric arc composite cladding head is also provided with a gas channel which is positioned at the periphery of the laser channel and used for conveying the shielding gas, the output end of the gas channel is provided with an annular air tap, and the shielding gas is sprayed out from the annular air tap to form a conical shielding gas barrier;

the laser-electric arc composite cladding head also comprises a telescopic adjusting mechanism for adjusting the distance between the air nozzle of the annular air nozzle and the surface of the workpiece to be repaired.

Preferably, the light path adjusting mechanism at least comprises a collimating mirror and a focusing mirror.

Preferably, the collimating lens and the focusing lens are annular lenses through which the wire feed tube can pass.

Preferably, the light path adjusting mechanism further comprises a distance adjusting mechanism for adjusting the distance between the focusing lens and the collimating lens.

Preferably, the wire feeding tube includes a straight tube-shaped front end tube body for outputting the welding wire in a straight state.

Preferably, the laser-arc composite cladding head has a housing, the laser channel being formed between an inner wall of the housing and an outer wall of the front end pipe body.

Preferably, the distance adjusting mechanism comprises at least two adjusting seats arranged on the inner wall of the shell, each adjusting seat is provided with a fixed seat connected with the edge of the straightening mirror and a movable seat connected with the edge of the focusing mirror, and the adjusting seats are further provided with a first driver for driving the movable seat to reversely move along the axis of the front end tube body relative to the fixed seat.

Preferably, the shell comprises an inner shell and an outer shell, the gas channel is formed between the inner shell and the outer shell, the inner shell and the outer shell are both provided with straight barrel parts, the annular air tap comprises an inner air tap shell and an outer air tap shell, the inner air tap shell and the outer air tap shell are both provided with the straight barrel parts and the conical barrel parts, the straight barrel parts of the inner air tap shell are movably sleeved with the straight barrel parts of the inner shell, and the straight barrel parts of the outer air tap shell are movably sleeved with the straight barrel parts of the outer shell.

A method for in-situ repair of a complex space-oriented laser-arc coaxial fuse comprises the following steps:

Firstly, cleaning a workpiece to be repaired and judging the damage type and the damage degree;

Secondly, sticking a three-dimensional scanning mark on the surface of the workpiece to be repaired, carrying out three-dimensional scanning modeling on the three-dimensional scanning mark, selecting welding wires and setting initial technological parameters aiming at the material, the surface morphology, the damage type and the damage degree of the workpiece to be repaired, and simultaneously calculating a repair path;

thirdly, driving the laser-electric arc composite cladding head to reach a designated position by controlling the welding robot so that the laser-electric arc composite cladding head is aligned to the position to be repaired;

Fourthly, introducing protective gas into the gas channel, and forming a conical protective gas barrier at the position to be repaired through the annular air tap; feeding wires through a wire feeding pipe, simultaneously starting a laser generator to emit laser beams, starting a conductive block to supply power for arc striking, and starting repair work;

fifthly, driving a laser-electric arc composite cladding head to move along the repairing path by a welding robot;

Sixthly, judging a repair state according to the state of the molten pool in the repair process, and regulating and controlling technological parameters such as wire feeding rate, air feeding rate, laser power, arc voltage and the like in real time until the repair is completed, wherein the equipment stops running;

And seventhly, performing quick performance detection on the repaired workpiece, and putting the workpiece into use after meeting the requirements.

Compared with the prior art, the invention has the beneficial effects that: the laser and welding wire converging point is adjusted to solve the technical problem that a conventional welding head cannot directly heat the internal corners of complex components or narrow spaces, and molten welding materials cannot directly cover damaged positions.

Drawings

Fig. 1 is a schematic structural diagram of an apparatus for in-situ repair of a complex space laser-arc coaxial fuse.

Fig. 2 is a schematic structural diagram of a laser-arc composite cladding head in an apparatus for in-situ repair of a complex space laser-arc coaxial fuse.

Fig. 3 is a schematic diagram of an apparatus for in-situ repair of a complex space laser-arc coaxial fuse during a bottom-up modification operation.

The reference numerals in the figures are: 1. a control system; 2. an electrical cabinet; 3. a wire feeder; 4. an air supply device; 5. a laser generator; 6. a welding robot; 7. a laser-arc composite cladding head; 701. a wire feeding tube; 702. a conductive block; 703. a collimator lens; 704. a focusing mirror; 705. a fixing seat; 706. a movable seat; 707. an inner case; 708. a housing; 709. a second driver; 710. a third driver; 100. a welding wire; 200. laser; 300. a shielding gas; 400. and (5) dripping.

Detailed Description

The invention will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the invention and the specific objects and functions achieved.

Referring to fig. 1 to 3, a device for repairing a complex space laser-arc coaxial fuse in situ comprises a control system 1, an electrical cabinet 2, a wire feeder 3, an air feeder 4 and a welding robot 6, wherein the welding robot 6 is provided with a laser-arc composite cladding head 7, the control system 1 is electrically connected with the electrical cabinet 2, the wire feeder 3, the air feeder 4, the welding robot 6 and the laser-arc composite cladding head 7 are electrically connected with the electrical cabinet 2, the wire feeder 3 is used for conveying a welding wire 100 into the laser-arc composite cladding head 7, the air feeder 4 is used for conveying a protective gas 300 into the laser-arc composite cladding head 7, and the welding robot 6 is provided with the laser-arc composite cladding head 7 for coaxially compounding the welding wire 100, the laser 200, the electric arc and the protective gas 300;

The laser-arc composite cladding head 7 is formed with a wire feed pipe 701 for feeding the welding wire 100, and the wire feed pipe 701 is mounted with a conductive block 702 for generating an arc.

The laser-arc composite cladding head 7 is also formed with a laser passage located at the periphery of the wire feed pipe 701 for the laser beam to pass through, and is provided with an optical path adjusting mechanism that converges a plurality of laser beams with the welding wire 100 at the surface of the work piece to be repaired and adjusts the converging point position of the laser beams with the welding wire 100. The plurality of laser beams may be formed by the same individual laser beams emitted from the plurality of laser generators 5. Alternatively, there may be a laser beam provided by a plurality of images generated by a beam splitter and emitted from a laser generator 5, as shown in fig. 2, in which a laser beam 200 is generated from a laser generator 5, and is refracted by a first triangular prism to be divided into three uniform beams by a triangular prism reflector, and then reflected by three second triangular prisms with central symmetry respectively to form three identical beams.

The laser-arc composite cladding head 7 is also provided with a gas channel which is positioned at the periphery of the laser channel and used for conveying the shielding gas 300, the output end of the gas channel is provided with an annular air nozzle, and the shielding gas 300 is sprayed out from the annular air nozzle to form a conical shielding gas 300. As shown in fig. 3, the shielding gas 300 is sprayed from the annular nozzle to form a gas field, and the gas field can balance the gravity of the molten pool of the cladding layer, so as to prevent the molten drops 400 in a molten state from flowing or even falling under the action of gravity. In particular, the re-welding surface is in a non-horizontal state, even when the welding surface is in an operating condition above the laser-arc composite cladding head 7.

The laser-electric arc composite cladding head 7 also comprises a telescopic adjusting mechanism for adjusting the distance between the air nozzle of the annular air nozzle and the surface of the workpiece to be repaired. Under special conditions, particularly when the laser-arc composite cladding head 7 cannot approach the welding surface closely, the convergence distance between the laser 200 and the welding wire 100 needs to be adjusted, that is, when the front end of the laser-arc composite cladding head 7 is far away from the welding surface, the welding wire 100 and the laser 200 can be converged on the welding surface, and in this case, the position of the spraying point of the shielding gas 300 needs to be adjusted adaptively, that is, the direct distance between the annular air tap and the welding surface needs to be adjusted, so as to ensure that the generated air field can fully act on the molten pool position. Because if the shielding gas 300 is not properly applied, it cannot cover the periphery of the molten pool but directly blows to the surface of the molten pool, the molten welding material in the molten pool is blown away, thereby causing welding defects.

The light path adjusting mechanism includes at least one collimator 703 and one focusing mirror 704. The collimator 703 and the focusing mirror 704 are annular lenses through which the wire feeding tube 701 can pass. Preferably, only one collimator 703 and one focusing mirror 704 are provided, and are annular lenses. The plurality of collimator lenses 703 may be disposed uniformly about the welding wire 100, but in this case, uniformity of the plurality of collimator lenses 703, including uniformity of size and uniformity of light transmittance, may be ensured to ensure that the laser beam passes through the collimator lenses 703 with the same refractive index. It is likewise possible to provide a plurality of focusing mirrors 704, and the plurality of focusing mirrors 704 are uniformly arranged with the wire 100 as an axis, but it is also necessary to ensure uniformity of the plurality of focusing mirrors 704. The scheme of the plurality of collimator lenses 703 and focusing lenses 704 requires not only higher processing precision of the collimator lenses 703 and focusing lenses 704, but also higher mounting precision.

The optical path adjusting mechanism further includes a distance adjusting mechanism for adjusting the distance between the focusing mirror 704 and the collimating mirror 703. As shown in fig. 2, by adjusting the position of the focusing mirror 704 relative to the collimating mirror 703, specifically, the distance between the focusing mirror 704 and the collimating mirror 703 can be adjusted, so that when the front end of the laser-arc composite cladding head 7 cannot approach the welding surface closely, the focusing point is adjusted to a far position, and the welding material in a molten state can be effectively covered on the workpiece to be repaired.

The wire feeder 701 includes a straight tubular front end body for outputting the welding wire 100 in a straight state.

In order to straighten the welding wire 100, the welding wire 100 is in a straight state when being sent out from the front end of the wire feeding tube 701, a wire guiding tube for straightening the welding wire 100 can be arranged in the front end tube, and the wire guiding tube is preferably a nylon tube with a smooth inner wall, because the nylon material has a self-lubricating effect, and the wire guiding tube is also made of other materials with self-lubricating effects.

Alternatively, the inner diameter of the front end pipe body may be set to a size similar to the diameter of the welding wire 100, so that sliding contact is formed between the surface of the welding wire 100 and the inner wall of the front end pipe body, and thus the straightening effect is achieved after the welding wire 100 passes through the front end pipe body.

The wire feeding tube 701 further comprises a rear end tube body communicated with the front end tube body, the conductive block 702 is arranged in the rear end tube body, the axis of the rear end tube body is intersected with the axis of the rear end tube body at an obtuse angle, and a wire guiding wheel is arranged in the wire feeding tube 701 at the position of the front end tube body and the rear end tube body.

Because the conductive block 702 is to be arranged in the rear end pipe body, and the welding wire 100 needs to pass through the conductive block 702 to be electrified, the inner wall of the rear end pipe body is obviously larger than the diameter of the welding wire 100, and when the front end pipe body straightens the welding wire 100 through the wire guide pipe in the front end pipe body, the front end pipe body and the rear end pipe body can be formed by bending a single pipe body, namely, the inner diameter and the outer diameter of the front end pipe body and the inner diameter of the rear end pipe body are the same; when the front end pipe body is straightened by the welding wire 100 through the inner wall of the front end pipe body, the front end pipe body and the rear end pipe body are formed by welding and splicing two pipe bodies with different inner diameters.

The laser-arc composite cladding head 7 has a housing, the inner wall of which forms the laser channel with the outer wall of the front-end pipe body.

The distance adjusting mechanism comprises at least two adjusting seats arranged on the inner wall of the shell, each adjusting seat is provided with a fixed seat 705 connected with the edge of the straightening mirror and a movable seat 706 connected with the edge of the focusing mirror 704, and the adjusting seats are also provided with a first driver for driving the movable seat 706 to reversely move along the axis of the front end tube body relative to the fixed seat 705.

In practice, three adjustment seats are preferred, because it is necessary to ensure that the axis of the lens coincides with the axis of the front tube in its installed state, both with the straightening mirror and with the focusing mirror 704, to ensure that the laser beam is able to converge with the welding wire 100 after passing through the straightening mirror and the focusing mirror 704. At the same time, the three adjustment seats are also beneficial to avoiding the shaking of the straightening mirror and the focusing mirror 704 during welding operation.

The shell comprises an inner shell 707 and an outer shell 708, the gas channel is formed between the inner shell 707 and the outer shell 708, the inner shell 707 and the outer shell 708 are both provided with straight barrel parts, the annular air tap comprises an inner air tap shell and an outer air tap shell, the inner air tap shell and the outer air tap shell are both provided with straight barrel parts and cone barrel parts, the straight barrel parts of the inner air tap shell are movably sleeved with the straight barrel parts of the inner shell 707, and the straight barrel parts of the outer air tap shell are movably sleeved with the straight barrel parts of the outer shell 708.

The telescoping adjustment mechanism includes a second actuator 709 mounted to the inner housing 707 for driving movement of the inner nozzle housing relative to the inner housing 707 and a second actuator 710 mounted to the outer housing 708 for driving movement of the outer nozzle housing relative to the outer housing 708.

A method for in-situ repair of a complex space-oriented laser-arc coaxial fuse comprises the following steps:

Firstly, cleaning a workpiece to be repaired and judging the damage type and the damage degree; more specifically, the degree of damage is classified into primary damage, secondary damage, and tertiary damage.

The primary damage is a small crack active pit, and the repair scheme of the primary damage is filling repair.

The secondary damage is a notch or a damage, the repairing scheme of the secondary damage is additive remanufacturing and repairing, and machining and shaping are carried out after repairing so as to remove redundant materials after repairing the damaged part.

The third-level damage is serious damage, the third-level damage is irreparable, and the third-level damage needs to be returned to a factory for maintenance or is directly scrapped.

Secondly, pasting a three-dimensional scanning mark on the surface of the workpiece to be repaired, carrying out three-dimensional scanning modeling on the three-dimensional scanning mark, selecting a welding wire 100 and setting initial technological parameters aiming at the material, the surface morphology, the damage type and the damage degree of the workpiece to be repaired, and simultaneously calculating a repair path. Specifically, the workpiece is subjected to three-dimensional scanning, a digital model is built, corresponding technological parameters of the digital model, the material of the workpiece to be repaired and the damage type options are input into the control system 1, the control system 1 sends out an instruction to the electrical cabinet 2, and the repair operation is started.

And thirdly, driving the laser-arc composite cladding head 7 to reach a designated position by controlling the welding robot 6 so that the laser-arc composite cladding head 7 is aligned to the position to be repaired. Specifically, the control system 1 controls the welding robot 6 to move the laser-arc composite cladding head 7 to a specified position, and the welding robot 6 drives the laser-arc composite cladding head 7 to move along a welding track. The welding track has a control system 1 that calculates the damage track from the data obtained by the three-dimensional scanning.

Fourthly, introducing a protective gas 300 body into the gas channel, and forming a conical protective gas 300 barrier at the position to be repaired through the annular air nozzle; feeding wires through a wire feeding pipe 701, simultaneously starting a laser generator 5 to emit laser beams, starting a conductive block 702 to supply power for arc striking, and starting repair work;

and fifthly, the welding robot 6 drives the laser-arc composite cladding head 7 to move along the repairing path.

And sixthly, judging a repair state according to the state of the molten pool in the repair process, and regulating and controlling the technological parameters such as wire feeding rate, air feeding rate, laser power, arc voltage and the like in real time until the repair is completed, wherein the equipment stops running.

And seventhly, performing quick performance detection on the repaired workpiece, and putting the workpiece into use after meeting the requirements.

The foregoing examples merely illustrate one or more embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of the invention should be assessed as that of the appended claims.

Claims (9)

1. The device for in-situ repair of the complex space-oriented laser-arc coaxial fuse comprises a welding robot (6), and is characterized in that the welding robot (6) is provided with a laser-arc composite cladding head (7) for coaxially compositing a welding wire (100), laser (200), an electric arc and a protective gas (300);

The laser-arc composite cladding head (7) is provided with a wire feeding pipe (701) for feeding welding wires (100), and the wire feeding pipe (701) is provided with a conductive block (702) for generating an arc;

The laser-electric arc composite cladding head (7) is also provided with a laser channel which is positioned at the periphery of the wire feeding pipe (701) and used for a laser beam to pass through, the laser channel is provided with a light path adjusting mechanism, and the light path adjusting mechanism is used for converging a plurality of laser beams on the surface of a workpiece to be repaired and the welding wire (100) and adjusting the position of a converging point of the laser beams and the welding wire (100);

The laser-electric arc composite cladding head (7) is also provided with a gas channel which is positioned at the periphery of the laser channel and used for conveying the protective gas (300), the output end of the gas channel is provided with an annular air nozzle, and the protective gas (300) is sprayed out from the annular air nozzle to form a conical protective gas (300) barrier;

the laser-electric arc composite cladding head (7) also comprises a telescopic adjusting mechanism for adjusting the distance between the air nozzle of the annular air nozzle and the surface of the workpiece to be repaired.

2. The device for in-situ repair of complex space laser-arc coaxial fuses according to claim 1, wherein the optical path adjusting mechanism at least comprises a collimating mirror (703) and a focusing mirror (704).

3. The device for in-situ repair of complex space laser-arc coaxial fuses according to claim 2, wherein the collimating mirror (703) and the focusing mirror (704) are annular lenses through which the wire feeding tube (701) can pass.

4. A device for in-situ repair of complex space laser-arc coaxial fuses according to claim 3, wherein the optical path adjustment mechanism further comprises a spacing adjustment mechanism for adjusting the distance between the focusing mirror (704) and the collimating mirror (703).

5. The device for in-situ repair of complex space laser-arc coaxial fuses according to any one of claims 1-4, wherein the wire feed tube (701) comprises a straight tubular front end body for outputting the welding wire (100) in a straight state.

6. The device for in-situ repair of complex space laser-arc coaxial fuses according to claim 5, wherein the laser-arc composite cladding head (7) has a housing, the laser channel being formed between the inner wall of the housing and the outer wall of the front end tube.

7. The device for in-situ repair of a laser-arc coaxial fuse in complex space according to claim 6, characterized in that the spacing adjustment mechanism comprises at least two adjustment seats mounted on the inner wall of the housing, each having a fixed seat (705) connected to the edge of the straightening mirror and a movable seat (706) connected to the edge of the focusing mirror (704), the adjustment seats being further provided with a first drive for driving the movable seat (706) in opposite directions along the axis of the front tube with respect to the fixed seat (705).

8. The device for in-situ repair of a laser-arc coaxial fuse in a complex space according to claim 6, wherein the shell comprises an inner shell (707) and an outer shell (708), the gas channel is formed between the inner shell (707) and the outer shell (708), the inner shell (707) and the outer shell (708) are both provided with straight barrel parts, the annular air tap comprises an inner air tap shell and an outer air tap shell, the inner air tap shell and the outer air tap shell are both provided with straight barrel parts and cone barrel parts, the straight barrel part of the inner air tap shell is movably sleeved with the straight barrel part of the inner shell (707), and the straight barrel part of the outer air tap shell is movably sleeved with the straight barrel part of the outer shell (708).

9. A method for in-situ repair of a complex space-oriented laser-arc coaxial fuse, applied to a device for in-situ repair of a complex space-oriented laser-arc coaxial fuse as set forth in any one of claims 1 to 8, comprising the steps of:

Firstly, cleaning a workpiece to be repaired and judging the damage type and the damage degree;

secondly, pasting a three-dimensional scanning mark on the surface of the workpiece to be repaired, carrying out three-dimensional scanning modeling on the three-dimensional scanning mark, selecting a welding wire (100) and setting initial technological parameters aiming at the material, the surface morphology, the damage type and the damage degree of the workpiece to be repaired, and simultaneously calculating a repair path;

Thirdly, driving the laser-electric arc composite cladding head (7) to reach a designated position by controlling the welding robot (6) so that the laser-electric arc composite cladding head (7) is aligned to the position to be repaired;

Fourthly, introducing a protective gas (300) body into the gas channel, and forming a conical protective gas (300) barrier at the position to be repaired through the annular air nozzle; feeding wires through a wire feeding pipe (701), simultaneously starting a laser generator (5) to emit laser beams, starting a conductive block (702) to supply power for arc striking, and starting repair work;

fifthly, driving a laser-electric arc composite cladding head (7) to move along the repairing path by a welding robot (6);

Sixthly, judging a repair state according to the state of the molten pool in the repair process, and regulating and controlling technological parameters such as wire feeding rate, air feeding rate, laser power, arc voltage and the like in real time until the repair is completed, wherein the equipment stops running;

And seventhly, performing quick performance detection on the repaired workpiece, and putting the workpiece into use after meeting the requirements.