A dual ring laser center wire feeding additive system and control method

Abstract

This invention provides a dual-ring laser-driven center-feed additive manufacturing system and its control method. The dual-ring laser-driven center-feed additive manufacturing system includes: a laser welding system that emits two laser beams from a laser generator, forming a coaxial outer ring laser and an inner ring laser; a consumable electrode welding system that supplies power to the wire feeding device and the metal wire via a MIG power supply, the metal wire passing through the center of the outer ring laser and the inner ring laser into the molten pool; and a controller for adjusting and controlling process parameters. The dual-ring laser-driven center-feed additive manufacturing system and its control method, based on droplet collaborative control, precisely control the droplet transition in laser-driven center-feed additive manufacturing, thereby improving weld bead formation, increasing deposition efficiency, and achieving stable and efficient additive manufacturing. During the additive manufacturing process, the various systems work closely together with a high degree of automation, ultimately achieving the desired additive weld bead formation.

Description

Technical Field

[0001] This invention relates to the field of metal additive manufacturing technology, and in particular to a dual-ring laser-driven center wire feeding additive manufacturing system and its control method. Background Technology

[0002] Laser additive manufacturing technology is a high-tech field that has emerged in recent years. It is a multidisciplinary technology that utilizes laser technology, CAX technology, automatic control technology, new materials technology, direct modeling, and rapid manufacturing of product models. It employs an "addition" forming process to replace the traditional "subtraction" forming process, marking a revolutionary advancement in the manufacturing industry.

[0003] When performing laser-driven additive manufacturing of titanium alloys, problems such as unstable droplet transition and poor weld formation can easily occur due to the high energy density of the laser and uneven heating of the metal wire. This results in poor precision and substandard performance of the additively manufactured components.

[0004] In order to effectively control the droplet transfer mode, Chinese patent CN109940252A proposed a welding torch protective nozzle, which is to set a beam tube next to the metal wire tube and use the laser to act on the root of the droplet for transfer control. However, this droplet transfer method uses a single beam of point laser, which causes uneven heating of the metal wire and is prone to droplet deviation.

[0005] Chinese patent CN110238528A discloses a laser-hot wire TIG composite welding method with normal wire feeding. It uses a combination of laser beam, non-consumable electrode and continuously heated metal wire to improve the metal wire deposition efficiency. However, the welding device is directional and cannot achieve multi-directional welding. Summary of the Invention

[0006] In view of this, the present invention aims to propose a dual-ring laser center-feed additive manufacturing system and control method to solve the problems of unstable droplet transition and poor weld bead formation in the laser center-feed additive manufacturing process.

[0007] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0008] A dual-ring laser-centric wire-feeding additive manufacturing system includes:

[0009] A laser welding system includes a laser generator, a laser working head, an outer ring laser mirror group, and an inner ring laser mirror group. The laser generator can emit two laser beams. Under the action of the outer ring laser mirror group and the inner ring laser mirror group in the laser working head, the two laser beams emit coaxial outer ring laser and inner ring laser. The outer ring laser and the inner ring laser are concentrically arranged.

[0010] The consumable electrode welding system includes a MIG power supply, a wire feeder, a contact tip, and a metal wire. The MIG power supply is used to supply power to the wire feeder and the metal wire. The wire feeder can adjust the feed speed and trajectory of the metal wire. The metal wire passes through the center of the outer ring laser and the inner ring laser and enters the molten pool.

[0011] The controller is used to adjust and control parameters such as inner ring laser energy, outer ring laser energy, arc energy, wire feed speed, laser head moving speed, and wire trajectory path.

[0012] Furthermore, the outer ring laser melts the substrate and metal wire, while the inner ring laser preheats the metal wire and controls the droplet transition.

[0013] Furthermore, the inner ring laser is a high-frequency pulsed laser, which is focused on the metal wire to form an inner ring laser spot. The distance between the inner ring laser spot and the plane of the area to be welded is h, where h is a preset spacing.

[0014] Furthermore, the value of h ranges from 5 to 20 mm.

[0015] Furthermore, the dual-ring laser center-feed additive manufacturing system also includes an image acquisition and processing system, which includes:

[0016] Droplet morphology collector: Real-time acquisition of the transition form of molten droplets using a high-speed camera device;

[0017] The weld bead morphology acquisition device uses a digital imaging device to acquire the morphology of the additive weld bead in real time.

[0018] Image processor: Analyzes and processes the images acquired by the droplet morphology acquisition device and the weld bead morphology acquisition device, generates digital signals and uploads them to the controller, and adjusts the energy of the inner ring laser and the wire feeding speed of the wire feeding device.

[0019] Furthermore, the image processor analyzes and processes the images received in real time from the droplet morphology acquisition device, generates digital signals from the droplet size and transition frequency information, and uploads them to the controller. The controller compares and calculates the received signals with the process database, and then transmits adjustment signals to the laser generator, which adjusts the energy of the inner ring laser.

[0020] Furthermore, the image processor receives the weld bead morphology image acquired in real time by the weld bead morphology acquisition device, analyzes and processes it, converts it into a digital signal of the weld bead morphology, and uploads it to the controller. The controller calculates the metal deposition amount of the additive cross section, and then transmits an adjustment signal to the MIG power supply. The MIG power supply adjusts the wire feeding speed of the wire feeding device to adjust and control the deposition amount of additive metal in the additive region.

[0021] Another object of the present invention is to provide a control method for a dual-ring laser center-feed additive manufacturing system, applied to the dual-ring laser center-feed additive manufacturing system as described above, comprising the following control steps:

[0022] S1: Pretreatment of the substrate;

[0023] S2: Place the metal wire at the center of the outer ring laser and the inner ring laser, place the additive system in an argon atmosphere, and set the process parameters according to the additive shape and process requirements. The process parameters include inner ring laser energy, outer ring laser energy, metal wire feed speed, arc energy, moving speed, and trajectory path.

[0024] S3: During the welding process, the droplet morphology collector collects the transition form of the droplets in real time. Based on the collected information, the system automatically adjusts the energy of the inner ring laser. At the same time, the weld bead morphology collector collects the morphology of the weld bead to be added in real time. The system automatically calculates the filler metal required for the added cross section and adjusts the wire feeding speed of the wire feeding device.

[0025] Furthermore, in step S2, the feeding direction of the metal wire is arranged perpendicular to the substrate.

[0026] Furthermore, in step S1, the substrate is acid-washed to remove oil, and then the surface oxide layer of the substrate is removed using a hard abrasive head until a bright metallic color appears. Finally, it is wiped with alcohol or acetone.

[0027] Compared with existing technologies, the dual-ring laser-centered wire feeding additive manufacturing system and control method described in this invention have the following advantages:

[0028] (1) The dual-ring laser center wire feeding additive manufacturing system and control method described in this invention adopts dual-beam ring laser additive manufacturing technology. By setting the outer ring laser with continuous output, it mainly melts the base material and metal wire, while the inner ring laser with high-frequency pulses preheats the metal wire and controls the droplet transition. The metal wire passes through the center of the dual-beam ring laser, eliminating the directionality of additive manufacturing and improving the flexibility of operation. When welding additive manufacturing, the system is placed in an argon atmosphere to prevent the titanium alloy from oxidizing, thereby improving the weld bead formation and achieving stable and efficient additive manufacturing.

[0029] (2) The dual-ring laser center wire feeding additive manufacturing system and control method of the present invention feeds the metal wire vertically into the molten pool, and the resulting droplets fall at the same point, which is beneficial to improve the forming of additive weld beads and improve the precision of additive manufacturing.

[0030] (3) The dual-ring laser center wire feeding additive system and control method described in this invention uses a high-frequency pulsed inner ring laser to drive the high-frequency vibration of the molten droplet, overcome the surface tension, thereby making it easier for the molten droplet to get rid of the metal wire, reduce the size of the molten droplet, and promote the transition of the metal wire to the molten droplet.

[0031] (4) The dual-ring laser center wire feeding additive manufacturing system and control method of the present invention preheats the metal wire and the droplet in advance with the inner ring laser, which is beneficial to increase the droplet energy and accelerate the droplet transition frequency.

[0032] (5) The dual-ring laser center wire feeding additive manufacturing system and control method described in this invention, wherein the MIG arc generated by the MIG power supply interacts with the inner ring laser and the outer ring laser to form a coupled arc, further increases the droplet transfer stability of the metal wire and improves the metal wire deposition efficiency.

[0033] (6) The dual-ring laser center wire feeding additive manufacturing system and control method described in this invention, the image acquisition and processing system acquires and analyzes the transition form of the molten droplet, which facilitates the adjustment of the energy of the inner ring laser and stabilizes the molten droplet transition.

[0034] (7) The dual-ring laser center wire feeding additive manufacturing system and control method of the present invention, the image acquisition and processing system performs real-time acquisition and analysis of the weld bead morphology, thereby adjusting the wire feeding speed, which is conducive to forming a stable and consistent additive morphology and size.

[0035] (8) The dual-ring laser center wire feeding additive manufacturing system and control method described in this invention are based on the dual-ring laser center wire feeding additive manufacturing system with droplet collaborative control. Through the set image acquisition and processing system, laser welding system and consumable electrode welding system, the droplet transition of laser center wire feeding additive manufacturing is precisely controlled, thereby improving weld bead formation, increasing deposition efficiency, and achieving stable and efficient additive manufacturing. During the additive manufacturing process, each system works closely together and has a high degree of automation, ultimately obtaining the expected additive weld bead formation. Attached Figure Description

[0036] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0037] Figure 1 This is a schematic diagram of the principle of the dual-ring laser center wire feeding additive manufacturing system according to an embodiment of the present invention;

[0038] Figure 2 This is a schematic diagram of the structure of the dual-ring laser-centered wire-feeding additive manufacturing system forming molten droplets during operation, as described in an embodiment of the present invention.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1-MIG power supply; 2-Laser generator; 3-Controller; 4-Image processor; 5-Wire feeder; 6-Laser working head; 7-Outer ring laser mirror group; 8-Inner ring laser mirror group; 9-Outer ring laser; 10-Wire guide nozzle; 11-Inner ring laser; 12-Inner ring laser spot; 13-Outer ring laser spot; 14-Metal wire; 15-Substrate; 16-Additive weld bead; 17-Weld bead to be added; 18-Droplet morphology collector; 19-Weld bead morphology collector; 20-Electric arc; 21-Droplet. Detailed Implementation

[0041] To make the technical means and objectives and effects of the present invention easier to understand, the embodiments of the present invention will be described in detail below with reference to specific illustrations.

[0042] It should be noted that all directional and positional terms used in this invention, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connections between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0043] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] like Figures 1-2 As shown, the present invention provides a dual-ring laser-centered wire-feeding additive manufacturing system, comprising:

[0046] The laser welding system includes a laser generator 2, a laser working head 6, an outer ring laser mirror group 7, and an inner ring laser mirror group 8. The laser generator 2 can emit two laser beams. Under the action of the outer ring laser mirror group 7 and the inner ring laser mirror group 8 in the laser working head 6, the two laser beams emit coaxial outer ring laser 9 and inner ring laser 11. The outer ring laser 9 and the inner ring laser 11 are concentrically arranged.

[0047] The consumable electrode welding system includes a MIG power supply 1, a wire feeder 5, a wire guide nozzle 10, and a metal wire 14. The MIG power supply 1 is used to supply power to the wire feeder 5 and the metal wire 14. The wire feeder 5 can adjust the feed speed and running trajectory of the metal wire 14. The metal wire 14 passes through the center of the outer ring laser 9 and the inner ring laser 11 and enters the molten pool.

[0048] The controller 3 is used to adjust and control the parameters of the inner ring laser 11 energy, outer ring laser 9 energy, arc 20 energy, wire 14 feed speed, laser head 6 moving speed, and wire 14 trajectory path.

[0049] The dual-ring laser center-feed additive manufacturing system of the present invention employs coaxially arranged dual-ring lasers. During use, it provides and feeds the metal wire 14 required for additive manufacturing according to the required deposition amount. An electric arc 20 is formed between the metal wire 14 and the substrate 15. The electric arc 20 interacts with the laser to form a coupled electric arc. The coupled electric arc forms a molten pool and plasma on the weld bead 17 to be added, providing the main energy for the melting of the metal wire 14, and together they melt the metal wire 14 to form the additive weld bead 16. The outer ring laser 9 melts the substrate 15 and the metal wire 14, while the inner ring laser 11 preheats the metal wire 14 and controls the droplet transition. Under the control of the controller 3, the MIG power supply 1 controls the wire feeding device 5 to feed the metal wire 14 accordingly and applies a corresponding current value to the metal wire 14. The metal wire 14 passes through the center of the outer ring laser 9 and the inner ring laser 11 into the molten pool, realizing precise control of the droplet transition in laser center-feed additive manufacturing.

[0050] The dual-ring laser center wire feeding additive manufacturing system of the present invention eliminates the directionality of laser wire feeding additive manufacturing, realizes multi-angle arbitrary welding, and improves the flexibility of operation. On the other hand, the metal wire is vertically fed into the molten pool, and the resulting droplets fall at the same point, which is conducive to improving the formation of additive weld beads 16 and improving the precision of additive manufacturing.

[0051] As a preferred example of the present invention, the inner ring laser 11 is a high-frequency pulsed laser, which is focused on the metal wire 14 to form an inner ring laser spot 12. The distance between the inner ring laser spot 12 and the plane of the area to be welded is h, where h is a preset spacing. Preferably, the value of h is 5 to 20 mm. This setting allows the inner ring laser spot 12 to stably act on the necking of the molten droplet 21 within the set process window. By using a high-frequency pulsed inner ring laser 11, on the one hand, it can drive the high-frequency vibration of the molten droplet 21 to overcome the surface tension, thereby making it easier for the molten droplet 21 to get away from the metal wire 14, reducing the size of the molten droplet 21, thereby promoting and controlling the molten droplet transition of the metal wire 14; on the other hand, the high-frequency pulsed inner ring laser 11 can preheat the metal wire 14, which is beneficial to increase the energy of the molten droplet 21 and accelerate and control the molten droplet transition frequency; in addition, the inner ring laser 11 is a ring-shaped laser that can be passed through by the metal wire 14, and the inner ring laser spot 12 can act uniformly around the metal wire 14, avoiding the displacement of the molten droplet 21 caused by a unilateral heat source.

[0052] As a preferred example of the present invention, the dual-ring laser center-feeding additive manufacturing system further includes an image acquisition and processing system, the image acquisition and processing system comprising:

[0053] Droplet morphology collector 18: Real-time acquisition of the transition form of droplet 21 via a high-speed camera device;

[0054] The weld bead morphology acquisition device 19 acquires the morphology of the additive weld bead 17 in real time through a digital imaging device.

[0055] Image processor 4: Analyzes and processes the images acquired by droplet morphology acquisition device 18 and weld bead morphology acquisition device 19, generates digital signals and uploads them to controller 3, and adjusts the energy of inner ring laser 11 and the wire feeding speed of wire feeding device 5.

[0056] The dual-ring laser center wire feeding additive manufacturing system of the present invention collects and analyzes the transition form of the molten droplet through an image acquisition and processing system, which facilitates the adjustment of the energy of the inner ring laser and stabilizes the droplet transition; in addition, the image acquisition and processing system collects and analyzes the weld bead morphology in real time, thereby adjusting the wire feeding speed, which is beneficial to forming a stable and consistent additive morphology and size.

[0057] Preferably, the image processor 4 analyzes and processes the image received in real time from the droplet morphology collector 18, generates digital signals from information such as the size and transition frequency of the droplet 21, and uploads them to the controller 3. The controller 3 compares and calculates the received signals with the process database, and then transmits adjustment signals to the laser generator 2. The laser generator 2 adjusts the energy of the inner ring laser 11.

[0058] Since different inner ring lasers 11 have different effects on promoting droplet transition, this setup uses a droplet morphology collector 18 to collect the transition form of the droplet 21 in real time. Based on the collected information, the system automatically adjusts the energy of the inner ring laser 11 so that the inner ring laser spot 12 formed by the high-frequency pulsed inner ring laser 11 acts stably on the necking of the droplet 21, thereby changing the droplet transition form, improving the fusion efficiency, changing the size and transition frequency of the droplet 21, improving the stability of the droplet transition, and obtaining the expected droplet transition form.

[0059] Preferably, the image processor 4 analyzes and processes the morphology image of the weld bead 17 to be added in real time acquired by the weld bead morphology acquisition device 19, converts it into a digital signal of the morphology of the weld bead 17 to be added, and uploads it to the controller 3. The controller 3 calculates the metal deposition amount of the additive cross section, and then transmits an adjustment 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 region.

[0060] The system uses a weld bead morphology acquisition device 19 to collect the morphology of the weld bead 17 to be added in real time. The system automatically calculates the filler metal required for the added section and adjusts the wire feeding speed of the wire feeding device 5 to control the amount of added metal deposited in the added area.

[0061] The dual-ring laser center-feed additive manufacturing system described in this invention is based on a droplet collaborative control system. Through an image acquisition and processing system, a laser welding system, and a consumable electrode welding system, it precisely controls the droplet transition in laser center-feed additive manufacturing, thereby improving weld bead formation, increasing deposition efficiency, and achieving stable and efficient additive manufacturing. During the additive manufacturing process, the various systems work closely together with a high degree of automation, ultimately obtaining the expected additive weld bead 16 formation.

[0062] This invention also discloses a control method for a dual-ring laser center-feed additive manufacturing system, applied to the dual-ring laser center-feed additive manufacturing system as described above, comprising the following steps:

[0063] S1: Pretreatment of substrate 15;

[0064] S2: Place the metal wire 14 at the center of the outer ring laser 9 and the inner ring laser 11, place the additive system in an argon atmosphere, and set the process parameters according to the additive shape and process requirements. The process parameters include the energy of the inner ring laser 11, the energy of the outer ring laser 9, the feed speed of the metal wire 14, the energy of the electric arc 20, the moving speed, and the trajectory path.

[0065] S3: During the welding process, the droplet morphology collector 18 collects the transition form of the droplet 21 in real time. Based on the collected information, the system automatically adjusts the energy of the inner ring laser 11. At the same time, the weld bead morphology collector 19 collects the morphology of the weld bead 17 to be added in real time. The system automatically calculates the filler metal required for the added section and adjusts the wire feeding speed of the wire feeding device 5.

[0066] The dual-ring laser center-feeding additive manufacturing system and control method described in this invention employs dual-beam ring laser additive manufacturing technology. A continuously outputting outer ring laser primarily melts the base material and the metal wire, while a high-frequency pulsed inner ring laser preheats the metal wire and controls the droplet transfer. The metal wire passes through the center of the dual-beam ring laser, eliminating the directionality of additive manufacturing and improving operational flexibility. During welding additive manufacturing, the system is placed in an argon atmosphere to prevent oxidation of the titanium alloy, thereby improving weld bead formation and achieving stable and efficient additive manufacturing.

[0067] As a preferred example of the present invention, in step S2, the feeding direction of the metal wire 14 is arranged perpendicular to the substrate 15. This arrangement allows the metal wire to be vertically fed into the molten pool, and the inner ring laser spot 12 formed by the metal wire 14 under the action of the inner ring laser 11 acts uniformly around the metal wire 14, avoiding the deviation of the molten droplets 21 caused by a unilateral heat source, and ensuring that the molten droplets fall at a consistent point, which is beneficial to improving the formation of additive weld beads and increasing the precision of additive manufacturing.

[0068] As a preferred example of the present invention, in step S1, the substrate 15 is pickled to remove oil, and then the surface oxide layer of the substrate 15 is removed by a hard grinding head until a bright metallic color appears, and finally wiped with alcohol or acetone.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A twin ring laser center-fed wire additive system, characterized in that, include: The laser welding system includes a laser generator (2), a laser working head (6), an outer ring laser mirror group (7), and an inner ring laser mirror group (8). The laser generator (2) can emit two laser beams. Under the action of the outer ring laser mirror group (7) and the inner ring laser mirror group (8) in the laser working head (6), the two laser beams emit coaxial outer ring laser (9) and inner ring laser (11). The outer ring laser (9) and the inner ring laser (11) are concentrically set. The outer ring laser (9) melts the substrate (15) and the metal wire (14), and the inner ring laser (11) preheats the metal wire (14) and controls the droplet transition. The inner ring laser (11) is a high-frequency pulse laser, which is focused on the metal wire (14) to form an inner ring laser spot (12). The distance between the inner ring laser spot (12) and the plane of the area to be welded is h, where h is a preset distance. The consumable electrode welding system includes a MIG power supply (1), a wire feeder (5), a contact tip (10), and a metal wire (14). The MIG power supply (1) is used to supply power to the wire feeder (5) and the metal wire (14). The wire feeder (5) can adjust the feed speed and trajectory of the metal wire (14). The metal wire (14) passes through the center of the outer ring laser (9) and the inner ring laser (11) and enters the molten pool. The controller (3) is used to adjust and control the parameters of the inner ring laser (11) energy, outer ring laser (9) energy, electric arc (20) energy, wire (14) feed speed, laser head (6) moving speed, and wire (14) trajectory path.

2. The twin ring laser center-fed wire additive system of claim 1, wherein, The value of h is 5~20mm.

3. The dual ring laser powder-fed additive system of any of claims 1-2, wherein, The dual-ring laser center-feed additive manufacturing system also includes an image acquisition and processing system, which comprises: Droplet morphology collector (18): Real-time acquisition of the transition form of droplets (21) using a high-speed camera device; The weld bead morphology acquisition device (19) acquires the morphology of the additive weld bead (17) in real time through a digital imaging device; Image processor (4): Analyzes and processes the images acquired by the droplet morphology collector (18) and the weld bead morphology collector (19), generates digital signals and uploads them to the controller (3), and adjusts the energy of the inner ring laser (11) and the wire feeding speed of the wire feeding device (5).

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

5. The dual ring laser center-fed wire additive system of claim 4, wherein, The image processor (4) analyzes and processes the morphology image of the weld bead (17) to be added in real time, which is collected by the weld bead morphology acquisition device (19), and converts it into a digital signal of the morphology of the weld bead (17) to be added, and uploads it to the controller (3). The controller (3) calculates the metal deposition amount of the additive section, and then transmits the adjustment 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 the deposition amount of the additive metal in the control additive area.

6. A method for controlling a dual ring laser center wire feeding additive system, applied to the dual ring laser center wire feeding additive system according to any one of claims 1-5, characterized in that, The following control steps are included: S1: Pretreatment of the substrate; S2: Place the metal wire at the center of the outer ring laser and the inner ring laser, place the additive system in an argon atmosphere, and set the process parameters according to the additive shape and process requirements. The process parameters include inner ring laser energy, outer ring laser energy, metal wire feed speed, arc energy, moving speed, and trajectory path. S3: During the welding process, the droplet morphology collector collects the transition form of the droplets in real time. Based on the collected information, the system automatically adjusts the energy of the inner ring laser. At the same time, the weld bead morphology collector collects the morphology of the weld bead to be added in real time. The system automatically calculates the filler metal required for the additive cross-section and adjusts the wire feeding speed of the wire feeding device.

7. The dual ring laser center-fed wire additive system control method of claim 6, wherein, In step S2, the feeding direction of the metal wire is arranged perpendicular to the substrate.

8. The dual ring laser center-fed wire additive system control method of claim 6, wherein, In step S1, the substrate is acid-washed to remove oil, and then the surface oxide layer of the substrate is removed using a hard abrasive head until a bright metallic color appears. Finally, it is wiped with alcohol or acetone.

Images