CN116275525A

CN116275525A - Dual-ring laser center wire feeding and material adding system and control method

Info

Publication number: CN116275525A
Application number: CN202310067164.5A
Authority: CN
Inventors: 马照伟; 雷小伟; 王伟超; 杜志博
Original assignee: Luoyang Shipbuilding Materials Research Institute 725th Research Institute Of China Shipbuilding Corp
Current assignee: Luoyang Shipbuilding Materials Research Institute 725th Research Institute Of China Shipbuilding Corp
Priority date: 2023-02-06
Filing date: 2023-02-06
Publication date: 2023-06-23

Abstract

The invention provides a double-ring-shaped laser center wire feeding and material adding system and a control method, wherein the double-ring-shaped laser center wire feeding and material adding system comprises the following components: the laser welding system is used for emitting two laser beams through the laser generator to form coaxial outer ring laser and inner ring laser; a consumable electrode welding system for powering the wire feeder and the wire through a MIG power source, the wire passing from the center of the outer ring laser and the inner ring laser into the molten pool; and the controller is used for adjusting and controlling the process parameters. According to the double-ring-shaped laser center wire feeding and material adding system and the control method, based on the double-ring-shaped laser center wire feeding and material adding system with the cooperative control of the molten drops, the molten drop transition in the laser center wire feeding and material adding manufacture is precisely controlled, so that the welding bead forming is improved, the deposition efficiency is improved, stable and efficient material adding is realized, the systems are closely cooperated in the material adding process, the automation degree is higher, and the expected material adding welding bead forming is finally obtained.

Description

Dual-ring laser center wire feeding and material adding system and control method

Technical Field

The invention relates to the technical field of metal additive manufacturing, in particular to a double-ring-shaped laser center wire feeding and additive manufacturing system and a control method.

Background

The laser additive forming technology is a high-grade new technology developed in recent years, and is a multi-disciplinary comprehensive technology for rapidly manufacturing a product model by utilizing a laser technology, a CAX technology, an automatic control technology, a new material technology, direct molding and the like. The stacking molding processing technology is adopted to replace the traditional removing molding processing technology, and has epoch-making significance in the processing field.

When the laser center wire feeding additive manufacturing of titanium alloy is carried out, the problems of unstable molten drop transition, poor welding bead forming and the like are easy to occur due to the fact that the energy density of laser is high, the metal wire is heated unevenly, and the precision of a component prepared by the additive is poor and the performance of the component is not up to standard.

In order to effectively control the molten drop transition form, chinese patent CN109940252a proposes a welding gun protection nozzle, that is, a beam tube is arranged beside a wire tube, laser acts on the root of a molten drop to perform transition control, but the molten drop transition mode adopts a single-beam point laser, the wire is heated unevenly, and molten drop deviation is easy to occur.

Chinese patent CN 110238528A) discloses a laser-hot wire TIG hybrid welding method for normal wire feeding, which adopts a mode of combining a laser beam, a non-melting electrode and a continuously heated wire to improve the wire cladding efficiency, but the welding device has a direction, so that multi-directional welding cannot be realized.

Disclosure of Invention

In view of the above, the invention aims to provide a dual-ring-shaped laser center wire feeding and material adding system and a control method, so as to solve the problems of unstable molten drop transition and poor welding bead forming in the laser center wire feeding and material adding manufacturing process.

In order to achieve the above purpose, the technical scheme of the invention is realized as follows:

a dual annular laser center wire feed additive system comprising:

the laser welding system comprises a laser generator, a laser working head, an outer ring laser lens group and an inner ring laser lens group, wherein the laser generator can emit two laser beams, the two laser beams emit coaxial outer ring laser and inner ring laser under the action of the outer ring laser lens group and the inner ring laser lens group in the laser working head, and the outer ring laser and the inner ring laser are concentrically arranged;

the consumable electrode welding system comprises an MIG power supply, a wire feeding device, a conductive nozzle and a metal wire, wherein the MIG power supply is used for supplying power to the wire feeding device and the metal wire, the wire feeding device can adjust the feeding speed and the running track of the metal wire, and the metal wire passes through the centers of the outer ring laser and the inner ring laser and enters a molten pool;

and the controller is used for adjusting and controlling parameters of the inner ring laser energy, the outer ring laser energy, the arc energy, the wire feeding speed, the moving speed of the laser working head and the wire track path.

Further, the outer ring laser melts the substrate and wire, and the inner ring laser preheats the wire and controls droplet transition.

Further, the inner ring laser is high-frequency pulse laser, and is focused on the metal wire to form inner ring laser spots, wherein the distance between the inner ring laser spots and the plane of the area to be welded is h, and h is a preset distance.

Further, the value of h is 5-20 mm.

Further, the dual-ring laser center wire feeding and material adding system further comprises an image acquisition and processing system, and the image acquisition and processing system comprises:

droplet morphology collector: collecting the transition form of the molten drops in real time through a high-speed camera device;

the welding bead morphology collector is used for collecting the morphology of the welding bead to be added in real time through the digital imaging device;

an image processor: and analyzing and processing images acquired by the droplet morphology acquisition device and the weld bead morphology acquisition device, generating digital signals, uploading the digital signals to the controller, and adjusting the energy of the inner ring laser and the wire feeding speed of the wire feeding device.

Further, the image processor analyzes and processes the received image acquired by the droplet morphology acquisition device in real time, generates digital signals by the droplet size and transition frequency information, uploads the digital signals to the controller, compares and calculates the received signals with the process database, then transmits adjusting signals to the laser generator, and the laser generator adjusts the energy of the inner ring laser.

Further, the image processor acquires the shape image of the welding bead to be added in real time by the received welding bead shape acquisition device to analyze and process, converts the image into a digital signal of the shape of the welding bead to be added, and uploads the digital signal to the controller, the controller calculates the metal deposition amount of the section of the additive, then transmits an adjusting signal to the MIG power supply, the MIG power supply adjusts the wire feeding speed of the wire feeding device, and adjusts and controls the deposition amount of the additive metal in the additive area.

Another object of the present invention is to provide a control method of a dual-ring-shaped laser center wire feeding and material adding system, which is applied to the dual-ring-shaped laser center wire feeding and material adding system, and includes the following control steps:

s1: pretreating a substrate;

s2: arranging a metal wire at the center of the outer ring laser and the inner ring laser, arranging an additive system in an argon atmosphere, and setting technological parameters according to the additive shape and technological requirements, wherein the technological parameters comprise inner ring laser energy, outer ring laser energy, metal wire feeding speed, arc energy, moving speed and track path;

s3: in the welding process, a droplet shape collector collects the transition form of the droplet in real time, and the system automatically adjusts the energy of laser of the laser inner ring according to collected information; meanwhile, the bead morphology collector collects the morphology of the bead to be added in real time, the system automatically calculates the filling metal required by the additive section, and the wire feeding speed of the wire feeding device is adjusted.

Further, in step S2, the feeding direction of the wire is arranged perpendicular to the substrate.

Further, in step S1, the substrate is pickled to remove oil, then a hard grinding head is used to remove the surface oxide layer of the substrate until the bright metallic color appears, and finally alcohol or acetone is used for wiping.

Compared with the prior art, the double-ring-shaped laser center wire feeding and material adding system and the control method have the following advantages:

(1) According to the double-ring laser center wire feeding and material adding system and the control method, a double-beam ring laser material adding technology is adopted, the base metal and the metal wires are mainly melted by arranging the continuously output outer ring laser, the metal wires are preheated and the molten drop transition is controlled by the high-frequency pulse inner ring laser, the metal wires pass through the center of the double-beam ring laser, the directionality of material adding is eliminated, the operation flexibility is improved, and when the material adding is performed through welding, the system is placed in an argon atmosphere to prevent titanium alloy from being oxidized, so that the welding bead forming is improved, and stable and efficient material adding is realized.

(2) According to the double-ring-shaped laser center wire feeding and material adding system and the control method, the metal wires are vertically fed into the molten pool, the formed molten drop points are consistent, the forming of a material adding welding path is facilitated to be improved, and the material adding manufacturing precision is improved.

(3) According to the double-ring-shaped laser center wire feeding and material adding system and the control method, the inner ring laser with high-frequency pulse can drive high-frequency vibration of the molten drops, and surface tension is overcome, so that the molten drops are more favorable for getting rid of metal wires, the size of the molten drops is reduced, and the transition of the molten drops of the metal wires is promoted.

(4) According to the double-ring-shaped laser center wire feeding and material adding system and the control method, the inner ring laser preheats the metal wire and the molten drops in advance, so that the energy of the molten drops is improved, and the transition frequency of the molten drops is accelerated.

(5) According to the double-ring-shaped laser center wire feeding and material adding system and the control method, the MIG arc generated by the MIG power supply interacts with the inner ring laser and the outer ring laser to form the coupling arc, so that the drop transition stability of the metal wire is further improved, and the metal wire cladding efficiency is improved.

(6) According to the double-ring-shaped laser center wire feeding and material adding system and the control method, the image acquisition and processing system acquires and analyzes the transition form of the molten drop, so that the energy of the inner ring laser is conveniently adjusted, and the molten drop transition is stabilized.

(7) According to the double-ring-shaped laser center wire feeding and material adding system and the control method, the image acquisition and processing system acquires and analyzes the appearance of the weld bead in real time, so that the wire feeding speed is adjusted, and stable and consistent material adding appearance and size can be formed.

(8) According to the double-ring-shaped laser center wire feeding and material adding system and the control method, the double-ring-shaped laser center wire feeding and material adding system based on the cooperative control of molten drops is used for accurately controlling molten drop transition in the laser center wire feeding and material adding manufacture through the arranged image acquisition and processing system, the laser welding system and the consumable electrode welding system, so that welding bead forming is improved, deposition efficiency is improved, stable and efficient material adding is realized, in the material adding process, the systems are tightly cooperated, the automation degree is high, and the expected material adding welding bead forming is finally obtained.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

FIG. 1 is a schematic diagram of a dual annular laser center wire feed additive system according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a structure of a dual-ring laser center wire feeding additive system according to an embodiment of the present invention for forming molten drops during operation;

reference numerals illustrate:

1-MIG power supply; a 2-laser generator; 3-a controller; 4-an image processor; 5-wire feeder; 6-a laser working head; 7-an outer ring laser lens group; 8-an inner ring laser lens group; 9-outer ring laser; 10-a wire guide nozzle; 11-inner ring laser; 12-inner ring laser spots; 13-outer ring laser spot; 14-wire; 15-a substrate; 16-adding material welding beads; 17-a weld bead to be added; 18-a droplet morphology collector; 19-a bead morphology collector; 20-arc; 21-droplets.

Detailed Description

In order to facilitate understanding of the technical means, objects and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is to be noted that all terms used for directional and positional indication in the present invention, such as: "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "top", "low", "lateral", "longitudinal", "center", etc. are merely used to explain the relative positional relationship, connection, etc. between the components in a particular state (as shown in the drawings), and are merely for convenience of description of the present invention, and do not require that the present invention must be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in fig. 1-2, the present invention provides a dual annular laser center wire feeding and material adding system, comprising:

the laser welding system comprises a laser generator 2, a laser working head 6, an outer ring laser lens group 7 and an inner ring laser lens group 8, wherein the laser generator 2 can emit two laser beams, the two laser beams emit coaxial outer ring laser 9 and inner ring laser 11 under the action of the outer ring laser lens group 7 and the inner ring laser lens group 8 in the laser working head 6, and the outer ring laser 9 and the inner ring laser 11 are concentrically arranged;

the consumable electrode welding system comprises a MIG power supply 1, a wire feeding device 5, a wire guide nozzle 10 and a metal wire 14, wherein the MIG power supply 1 is used for supplying power to the wire feeding device 5 and the metal wire 14, the wire feeding device 5 can adjust the feeding speed and the running track of the metal wire 14, and the metal wire 14 passes through the centers of an outer ring laser 9 and an inner ring laser 11 and enters a molten pool;

and the controller 3 is used for adjusting and controlling parameters of the energy of the inner ring laser 11, the energy of the outer ring laser 9, the energy of the electric arc 20, the feeding speed of the metal wire 14, the moving speed of the laser working head 6 and the track path of the metal wire 14.

According to the double-ring-shaped laser center wire feeding and material adding system, when the double-ring-shaped laser center wire feeding and material adding system is used, metal wires 14 required by material adding manufacture are provided and fed according to the requirement of deposition amount, an electric arc 20 is formed between the metal wires 14 and a base material 15, the electric arc 20 interacts with laser to form a coupling electric arc, the coupling electric arc forms a molten pool and plasma on a welding bead 17 to be added, main energy is provided for metal wire melting, melting of the metal wires 14 is carried out together, and an material adding welding bead 16 is formed, wherein an outer ring laser 9 melts the base material 15 and the metal wires 14, an inner ring laser 11 preheats the metal wires 14 and controls droplet transition, under the control of a controller 3, an MIG power supply 1 controls a wire feeding device 5 to feed corresponding metal wires 14, and corresponding current values are applied to the metal wires 14, and the metal wires 14 penetrate through the centers of the outer ring laser 9 and the inner ring laser 11 into the molten pool, so that droplet transition of laser center wire feeding and material adding manufacture is accurately controlled.

According to the double-ring-shaped laser center wire feeding and material adding system, on one hand, the directionality of laser wire feeding and material adding manufacturing is eliminated, multi-angle random welding is realized, and the operation flexibility is improved; on the other hand, the metal wire is vertically fed into the molten pool, and the formed molten drop points are consistent, so that the forming of the material-increasing welding bead 16 is improved, and the material-increasing manufacturing precision is improved.

As a preferred example of the present invention, the inner ring laser 11 is a high-frequency pulse laser, and is focused on the wire 14 to form an inner ring laser spot 12, where the inner ring laser spot 12 is spaced from the plane of the region to be welded by h, which is a preset distance. Preferably, h has a value of 5 to 20mm. This arrangement allows the inner ring laser spot 12 to act steadily on the neck of the droplet 21 within a set process window. By adopting the inner ring laser 11 with high-frequency pulse, on one hand, the high-frequency vibration of the molten drop 21 can be driven, and the surface tension is overcome, so that the molten drop 21 is more favorable for getting rid of the metal wire 14, the size of the molten drop 21 is reduced, and the molten drop transition of the metal wire 14 is promoted and controlled; meanwhile, the inner ring laser 11 with high-frequency pulse can preheat the metal wire 14, which is beneficial to improving the energy of the molten drop 21 and accelerating and controlling the transition frequency of the molten drop; in addition, the inner ring laser 11 adopts ring laser which can be penetrated by the metal wire 14, and the inner ring laser spots 12 can uniformly act on the periphery of the metal wire 14, so that the deflection of the molten drops 21 caused by a single-side heat source is avoided.

As a preferred example of the present invention, the dual annular laser center wire feeding and additive system further includes an image acquisition and processing system, the image acquisition and processing system includes:

droplet morphology collector 18: the transition form of the molten drop 21 is acquired in real time through a high-speed camera;

the bead morphology collector 19 is used for collecting the morphology of the welding bead 17 to be added in real time through a digital imaging device;

the image processor 4: the images acquired by the droplet morphology acquisition unit 18 and the bead morphology acquisition unit 19 are analyzed and processed to generate digital signals, and the digital signals are uploaded to the controller 3 to adjust the energy of the inner ring laser 11 and the wire feeding speed of the wire feeding device 5.

According to the double-ring-shaped laser center wire feeding and material adding system, the image acquisition and processing system is used for acquiring and analyzing the transition form of the molten drops, so that the energy of the inner ring laser can be conveniently adjusted, and the molten drop transition is stabilized; and the image acquisition processing system acquires and analyzes the appearance of the welding bead in real time, so that the wire feeding speed is adjusted, and stable and consistent additive appearance and dimension are formed.

Preferably, the image processor 4 analyzes and processes the image collected by the droplet shape collector 18 in real time, generates digital signals from the information such as the size and the transition frequency of the droplet 21, and uploads the digital signals to the controller 3, the controller 3 compares the received signals with a process database, then transmits an adjustment signal to the laser generator 2, and the laser generator 2 adjusts the energy of the inner ring laser 11.

Because the promotion effect of the power of different inner ring lasers 11 on the droplet transition is different, the setting collects the transition form of the droplet 21 in real time through the droplet form collector 18, and according to the collected information, the system automatically adjusts the energy of the laser inner ring lasers 11, so that the inner ring laser spots 12 formed by the high-frequency pulse inner ring lasers 11 stably act on the necking positions of the droplet 21, thereby changing the droplet transition form, improving the deposition efficiency, changing the size and the transition frequency of the droplet 21, improving the stability of the droplet transition, and obtaining the expected droplet transition form.

Preferably, the image processor 4 analyzes and processes the received bead morphology collector 19 to collect the morphology image of the bead 17 to be added in real time, converts the received bead morphology image into a digital signal of the bead 17 morphology to be added, and uploads the digital signal to the controller 3, the controller 3 calculates the metal deposition amount of the additive section, then transmits an adjusting signal to the MIG power supply 1, the MIG power supply 1 adjusts the wire feeding speed of the wire feeding device 5, and adjusts and controls the deposition amount of the additive metal in the additive area.

The arrangement collects the shape of the weld bead 17 to be added in real time through a weld bead shape collector 19, the system automatically calculates the filling metal required by the additive section, and the wire feeding speed of the wire feeding device 5 is adjusted, so that the deposition amount of the additive metal in the additive region is controlled.

According to the double-ring-shaped laser center wire feeding and material adding system, the melting drop transition of laser center wire feeding and material adding manufacture is precisely controlled through the image acquisition and processing system, the laser welding system and the consumable electrode welding system, so that the welding bead forming is improved, the deposition efficiency is improved, stable and efficient material adding is realized, the systems are closely cooperated in the material adding process, the automation degree is high, and the expected material adding welding bead 16 forming is finally obtained.

The invention also discloses a control method of the double-ring-shaped laser center wire feeding and material adding system, which is applied to the double-ring-shaped laser center wire feeding and material adding system, and comprises the following steps:

s1: pretreating the substrate 15;

s2: the metal wire 14 is arranged at the center of the outer ring laser 9 and the inner ring laser 11, the material adding system is placed in argon atmosphere, and technological parameters are set according to the material adding shape and technological requirements, wherein the technological parameters include the energy of the inner ring laser 11, the energy of the outer ring laser 9, the feeding speed of the metal wire 14, the energy of the electric arc 20, the moving speed and the track path;

s3: in the welding process, the droplet shape collector 18 collects the transition form of the droplet 21 in real time, and the system automatically adjusts the energy of the laser 11 in the laser ring according to the collected information; simultaneously, the bead morphology collector 19 collects the morphology of the weld bead 17 to be added in real time, the system automatically calculates the filling metal required by the additive section, and the wire feeding speed of the wire feeding device 5 is adjusted.

According to the double-ring laser center wire feeding and material adding system and the control method, a double-beam ring laser material adding technology is adopted, the base metal and the metal wires are mainly melted by arranging the continuously output outer ring laser, the metal wires are preheated and the molten drop transition is controlled by the high-frequency pulse inner ring laser, the metal wires pass through the center of the double-beam ring laser, the directionality of material adding is eliminated, the operation flexibility is improved, and when the material adding is performed through welding, the system is placed in an argon atmosphere to prevent titanium alloy from being oxidized, so that the welding bead forming is improved, and stable and efficient material adding is realized.

As a preferred example of the present invention, in step S2, the feeding direction of the wire 14 is arranged perpendicular to the base material 15. The arrangement enables the metal wire to be vertically fed into the molten pool, the inner ring laser spots 12 formed by the metal wire 14 under the action of the inner ring laser 11 uniformly act on the periphery of the metal wire 14, the deviation of the molten drops 21 caused by a single-side heat source is avoided, the formed molten drop points are consistent, the forming of the additive welding bead is facilitated, and the additive manufacturing precision is improved.

As a preferred example of the present invention, in step S1, the substrate 15 is pickled to remove oil, then the surface oxide layer of the substrate 15 is removed by using a hard grinding head until a bright metallic color appears, and finally wiping is performed by using alcohol or acetone.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims

1. A dual annular laser center wire feed additive system, comprising:

the laser welding system comprises a laser generator (2), a laser working head (6), an outer ring laser lens group (7) and an inner ring laser lens group (8), wherein the laser generator (2) can emit two beams of laser, and the two beams of laser emit coaxial outer ring laser (9) and inner ring laser (11) under the action of the outer ring laser lens group (7) and the inner ring laser lens group (8) in the laser working head (6), and the outer ring laser (9) and the inner ring laser (11) are concentrically arranged;

the consumable electrode welding system comprises an MIG power supply (1), a wire feeding device (5), a conducting nozzle (10) and a metal wire (14), wherein the MIG power supply (1) is used for supplying power to the wire feeding device (5) and the metal wire (14), the wire feeding device (5) can adjust the feeding speed and the running track of the metal wire (14), and the metal wire (14) passes through the centers of an outer ring laser (9) and an inner ring laser (11) to enter a molten pool;

and the controller (3) is used for adjusting and controlling parameters of the energy of the inner ring laser (11), the energy of the outer ring laser (9), the energy of the electric arc (20), the feeding speed of the metal wire (14), the moving speed of the laser working head (6) and the track path of the metal wire (14).

2. The dual annular laser center wire feed additive system of claim 1 wherein the outer annular laser (9) melts the substrate (15) and the wire (14) and the inner annular laser (11) preheats the wire (14) and controls droplet transitions.

3. The dual annular laser center wire feeding and material adding system according to claim 2, wherein the inner annular laser (11) is a high-frequency pulse laser, and is focused on the metal wire (14) to form an inner annular laser spot (12), wherein the distance between the inner annular laser spot (12) and the plane of the area to be welded is h, and h is a preset interval.

4. The dual annular laser center wire feed additive system of claim 3, wherein h has a value of 5-20 mm.

5. The dual annular laser center wire feed additive system of any one of claims 1-4, further comprising an image acquisition processing system comprising:

droplet morphology collector (18): collecting the transition form of the molten drops (21) in real time through a high-speed camera device;

the bead morphology collector (19) is used for collecting the morphology of the weld bead (17) to be added in real time through the digital imaging device;

image processor (4): images acquired by the molten drop shape acquisition device (18) and the welding bead shape acquisition device (19) are analyzed and processed, digital signals are generated and uploaded to the controller (3), and the energy of the inner ring laser (11) and the wire feeding speed of the wire feeding device (5) are adjusted.

6. The dual annular laser center wire feed additive system of claim 5 wherein the image processor (4) analyzes and processes the received image acquired in real time by the droplet morphology collector (18), generates digital signals from the droplet (21) size and transition frequency information and uploads the digital signals to the controller (3), the controller (3) compares the received signals with the process database and then transmits adjustment signals to the laser generator (2), and the laser generator (2) adjusts the energy of the inner annular laser (11).

7. The dual-ring-shaped laser center wire feeding and material adding system according to claim 6, wherein the image processor (4) collects the shape image of the welding bead (17) to be added in real time by the received welding bead shape collector (19), analyzes and processes the shape image, converts the shape image into a digital signal of the shape of the welding bead (17) to be added, and uploads the digital signal to the controller (3), the controller (3) calculates the metal deposition amount of the additive section, then the metal deposition amount of the additive section is transmitted to the MIG power supply (1), and the MIG power supply (1) adjusts the wire feeding speed of the wire feeding device (5) and adjusts and controls the deposition amount of the additive metal in the additive area.

8. A control method of a double-ring-shaped laser center wire feeding and material adding system, which is applied to the double-ring-shaped laser center wire feeding and material adding system as claimed in any one of claims 1 to 7, and is characterized by comprising the following control steps:

s1: pretreating a substrate;

9. The control method of a dual ring laser center feed additive system of claim 8, wherein in step S2, the feeding direction of the wire is arranged perpendicular to the substrate.

10. The control method of the dual ring laser center wire feed additive system according to claim 8, wherein in step S1, the substrate is pickled to remove oil, then a hard grinding head is used to remove the surface oxide layer of the substrate until a bright metallic color appears, and finally alcohol or acetone is used for wiping.