CN112792456B - Electric arc additive manufacturing method and system based on laser stabilized molten pool size - Google Patents
Electric arc additive manufacturing method and system based on laser stabilized molten pool size Download PDFInfo
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- CN112792456B CN112792456B CN202011590931.3A CN202011590931A CN112792456B CN 112792456 B CN112792456 B CN 112792456B CN 202011590931 A CN202011590931 A CN 202011590931A CN 112792456 B CN112792456 B CN 112792456B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/346—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding
- B23K26/348—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding in combination with arc heating, e.g. TIG [tungsten inert gas], MIG [metal inert gas] or plasma welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
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Abstract
The invention belongs to the field of metal additive manufacturing, and particularly discloses an electric arc additive manufacturing method and system based on laser stabilization of molten pool size, which comprises the following steps: when the formed metal component is manufactured by electric arc additive manufacturing, a beam of annular laser is acted on the formed metal to form a stable annular molten pool on the formed metal; simultaneously, the other beam of induced laser acts on the central area of the annular molten pool, and the central area of the annular molten pool is heated to generate metal steam which is ionized to form charged particles, so that the conductivity of the central area of the annular molten pool is improved, and the electric arc is induced to the central area of the annular molten pool to form a molten pool; the molten pool formed by melting metal by electric arc heat and the annular molten pool form an integral molten pool with stable dimension, and the metal of the integral molten pool becomes the next layer of metal formed by stacking after solidification; and then continuously stacking and forming until the metal member is formed. The invention can ensure the dimensional stability of the molten pool, and further improve the forming precision of the component in the electric arc additive manufacturing process.
Description
Technical Field
The invention belongs to the field of metal additive manufacturing, and particularly relates to an electric arc additive manufacturing method and system based on laser stabilization of a molten pool size.
Background
The electric arc additive manufacturing technology is also called 3D printing technology, and is a manufacturing method for continuously stacking metal forming components layer by layer from bottom to top by melting wires through electric arcs by utilizing the principle of stacking layer by layer. The method has the characteristics of high material utilization rate, high manufacturing efficiency and easiness in manufacturing and forming complex parts. However, the existing arc additive manufacturing technology has the problems of low dimensional controllability and forming precision of a formed component, and the wide application of the arc additive manufacturing technology is restricted.
In order to improve the quality of arc additive manufacturing metal components, optimization of the additive manufacturing process using a laser hybrid arc process is considered. The Nanjing university of science and technology has proposed a double laser beam electric arc multiple heat source composite additive method (CN111571017A), it uses double laser beam to act on base plate and additive, the compound heat source of two bundles of laser its function is mainly to preheat the base plate, or make the laser beam split through the light splitting function, make the diameter of facula enlarge, disperse the energy density of the laser, reduce the material and burn out the rate. Suzhou cudrania electricity intelligent technology limited (CN108500491A) provides a laser-cold metal transition arc coaxial composite additive manufacturing device and method, wherein a beam splitter is adopted to divide an incident light beam into more than two reflected laser beams, the two reflected laser beams are converted into a focused laser beam through a reflection focusing mirror, a CMT arc spot and a laser focusing spot are coaxially compounded into a symmetrical heat source, and the additive manufacturing process is not influenced by the welding direction. The Huazhong university of science and technology proposes an arc additive manufacturing forming method and system (CN107030385A) based on a laser stabilization and regulation mechanism, wherein a single beam of laser is directly acted on an arc column, and the mechanism of laser compression and arc stabilization is utilized to improve the surface forming precision and quality of a metal component.
However, in the prior art, the energy density of laser is dispersed, the material burning rate is reduced, the heat source is improved, or the arc is compressed to improve the stability of the arc only through the composite action of the laser and the arc, the forming precision of the metal component in the arc additive manufacturing process is difficult to effectively improve, the forming precision of the metal component in the arc additive manufacturing process is not concerned, the forming precision depends on the dimensional stability of the height and the width of each layer of deposited metal, and the dimensional stability of each layer of deposited metal depends on the dimensional stability of a molten pool.
Disclosure of Invention
Aiming at the defects or the improvement requirements of the prior art, the invention provides an electric arc additive manufacturing method and system based on laser stabilization of the size of a molten pool, and aims to realize high-precision forming of an electric arc additive manufacturing metal component by the synergistic effect of two laser beams, wherein one laser beam is used for stabilizing the size of the molten pool, the other laser beam is used for inducing an electric arc to enter the center of the laser beam to form an electric arc molten pool, and the laser molten pool and the electric arc molten pool form an integral molten pool with stable size.
To achieve the above object, according to an aspect of the present invention, there is provided an arc additive manufacturing method based on laser stabilization of a molten pool size, including the steps of:
s1, enabling a beam of annular laser to act on the metal substrate to form an annular molten pool on the metal substrate; simultaneously, the other beam of induced laser acts on the central area of the annular molten pool, the central area of the annular molten pool is heated to generate metal steam, the metal steam is ionized to form charged particles, the conductivity of the central area of the annular molten pool is improved, and then the electric arc is induced to the central area of the annular molten pool to form an electric arc molten pool; the electric arc melting pool and the annular melting pool form an integral melting pool with stable size, and the metal of the integral melting pool becomes a first layer of metal formed by accumulation after solidification;
s2, enabling a beam of annular laser to act on the formed metal to form an annular molten pool on the formed metal; simultaneously, the other beam of induced laser acts on the central area of the annular molten pool, the central area of the annular molten pool is heated to generate metal steam, the metal steam is ionized to form charged particles, the conductivity of the central area of the annular molten pool is improved, and then the electric arc is induced to the central area of the annular molten pool to form an electric arc molten pool; the electric arc melting pool and the annular melting pool form an integral melting pool with stable size, and the metal of the integral melting pool becomes the next layer of metal formed by accumulation after solidification;
and S3, repeating the step S2 until the arc additive manufacturing and forming of the metal component are completed.
More preferably, the ring laser power is 800w to 1500w, and the induced laser power is 300w to 800 w.
More preferably, when the arc torch generates an arc, the arc torch has a dry elongation of 10mm to 20mm and a forming current of 10A to 300A.
More preferably, the moving speed of the arc welding torch is 0.24m/min to 0.84 m/min.
More preferably, during the whole electric arc additive manufacturing and forming process, argon or carbon dioxide is used as protective gas, and the flow rate of the protective gas is 5L/min-20L/min.
According to another aspect of the present invention, there is provided a system for implementing the above arc additive manufacturing method based on laser stabilization of a weld pool size, comprising an arc generation device and a laser device, wherein: the arc generating device comprises an arc welding gun and a robot for driving the arc welding gun to move; the laser device comprises a laser gun clamping device, an annular laser gun and an induced laser gun, wherein the laser gun clamping device is fixedly installed on the arc welding gun, the annular laser gun and the induced laser gun are installed on the laser gun clamping device, the annular laser gun is used for generating annular laser, and the induced laser gun is used for generating induced laser.
Preferably, the annular laser gun and the induction laser gun are movably mounted on the laser gun clamping device, so that the angle and the distance between the annular laser gun and the arc welding gun and the angle and the distance between the induction laser gun and the arc welding gun are adjustable.
Preferably, the laser device further includes a laser emitter and a beam splitter, and the laser emitted by the laser emitter is provided to the annular laser gun and the induction laser gun through the beam splitter respectively.
Generally, compared with the prior art, the above technical solution conceived by the present invention mainly has the following technical advantages:
1. based on the principle that the size stability of each layer of deposited metal depends on the size stability of the height and the width of each layer of deposited metal, the forming precision of the metal component in the electric arc additive manufacturing process is based on the principle that the size stability of each layer of deposited metal depends on the size stability of a molten pool, the invention provides the principle that two beams of laser are utilized, wherein one beam of annular laser acts on the previous layer of deposited metal to form an annular molten pool, the other beam of laser acts on the metal in the central area of the annular laser to induce the electric arc for melting wires into the annular laser melting area, so that the size stability of the molten pool is ensured, the forming precision of the component in the electric arc additive manufacturing process is improved, and the forming precision of the component is particularly suitable for metal component additive manufacturing application scenes with high requirements on size precision and surface levelness.
2. According to the invention, the size of a molten pool in the additive manufacturing process can be accurately controlled by adjusting the respective power of the two beams of laser, so that the required size precision of the additive manufactured metal component is obtained; and meanwhile, the specific power ranges of the two beams of laser are determined, so that a clear annular molten pool can be obtained in the additive manufacturing process, an electric arc can be accurately induced to the central area of the annular molten pool, and parameters such as the moving speed of an arc welding gun and the like are further determined, so that the action effect of the laser gun is ensured.
3. The invention designs a corresponding electric arc additive manufacturing system, and integrates an arc welding gun and two laser guns into a whole through a laser gun clamping device, so that the arc welding gun and the two laser guns can synchronously move, and the accuracy in the electric arc additive manufacturing process is ensured; meanwhile, the angle and the distance between the annular laser gun and the arc welding gun body and the angle and the distance between the induced arc laser gun and the arc welding gun body are adjustable, so that the arc welding gun can adapt to different conditions.
Drawings
FIG. 1 is a schematic structural diagram of an arc additive manufacturing system according to an embodiment of the present invention;
fig. 2a is a schematic view (perspective view) of an arc additive manufacturing system according to an embodiment of the present invention;
FIG. 2b is a schematic diagram (cross-sectional view) of an arc additive manufacturing system according to an embodiment of the invention;
FIG. 3 is a schematic view of a straight wall structure in example 1 of the present invention;
fig. 4 is a schematic structural view of a three-way pipe joint in embodiment 2 of the invention;
fig. 5 is a schematic structural view of a rocket thrust chamber in embodiment 3 of the present invention.
The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein: 1-welding power supply, 2-robot, 3-annular laser gun, 4-laser gun clamping device, 5-beam splitter, 6-arc welding gun, 7-induction laser gun and 8-laser emitter.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The embodiment of the invention provides an electric arc additive manufacturing method based on laser stabilized molten pool size, which has the following principle:
and a beam of annular laser acts on the previous layer of deposited metal to form a stable annular molten pool, so that the size stability of the molten pool in the laser composite arc additive manufacturing process is ensured. The mechanism for stabilizing the size of the molten pool by one ring laser is as follows: the annular laser formed by the light splitter is used for accumulating metal on the previous layer, and the metal in the annular area is melted to form an annular molten pool under the action of the heat effect generated by high energy of the laser beam; meanwhile, the laser has the characteristics of high energy density and stable molten pool formed by melting, so that the size stability of the molten pool in the laser composite arc additive manufacturing process is ensured.
A laser beam acts on the metal in the central area of the ring laser, and the main function of the laser beam is to induce an electric arc to start an arc in the central area of the ring laser to form a molten pool. The mechanism of laser induced arcing is as follows: in the process of electric arc additive manufacturing, under the action of high energy density laser, metal in the central area of the annular light spot is heated to generate metal steam, so that the metal steam in the annular area is ionized to form a large number of charged particles, the conductivity of the area is improved, the electric arc is automatically induced in the area, and the electric arc is very stable, as shown in fig. 2 a. The molten pool formed by melting metal by electric arc heat and the molten pool formed by melting metal by annular laser are integrated into a whole molten pool with stable size in the process of manufacturing the additive, as shown in figure 2b, the metal of the whole molten pool becomes deposited metal after being solidified, and the precision of manufacturing the formed component by the electric arc additive is high because the size of each layer of the deposited metal is stable.
Based on the principle, when the metal component is formed on the metal substrate through the arc additive manufacturing, the method specifically comprises the following steps:
s1, two beams of laser are adopted, one beam of annular laser acts on the metal substrate, and a stable annular molten pool is formed on the metal substrate; simultaneously, the other beam of induced laser acts on the central area of the annular molten pool, the central area of the annular molten pool is heated to generate metal steam, the metal steam is ionized to form charged particles, the conductivity of the central area of the annular molten pool is improved, and then the electric arc is induced to the central area of the annular molten pool to form an electric arc molten pool; the electric arc melting pool and the annular melting pool form an integral melting pool with stable size, and the metal of the integral melting pool becomes a first layer of metal formed by accumulation after solidification;
s2, two beams of laser are adopted, one beam of annular laser acts on the newly formed layer of metal, and a stable annular molten pool is formed on the layer of formed metal; simultaneously, the other beam of induced laser acts on the central area of the annular molten pool, the central area of the annular molten pool is heated to generate metal steam, the metal steam is ionized to form charged particles, the conductivity of the central area of the annular molten pool is improved, and then the electric arc is induced to the central area of the annular molten pool to form an electric arc molten pool; the electric arc melting pool and the annular melting pool form an integral melting pool with stable size, and the metal of the integral melting pool becomes the next layer of metal formed by accumulation after solidification;
and S3, repeating the step S2, and carrying out multilayer metal accumulation forming until the arc additive manufacturing forming of the metal component is completed.
To achieve the above method, the present invention provides an arc additive manufacturing system, as shown in fig. 1, including an arc generating device and a laser device, wherein:
the arc generating device comprises an arc welding gun 6, a robot 2 for driving the arc welding gun 6 to move and a welding power supply 1 for supplying power to the arc welding gun 6;
the laser device comprises a laser emitter 8, a light splitter 5, an annular laser gun 3, an induction laser gun 7 and a laser gun clamping device 4, wherein laser emitted by the laser emitter 8 is respectively provided for the annular laser gun 3 and the induction laser gun 7 through the light splitter 5; the annular laser gun 3 is used for generating annular laser and forming an annular molten pool on the previous accumulation layer; the induction laser gun 7 is used for generating induction laser to induce the electric arc for melting the wire material to enter the annular area; the laser gun clamping device 4 is fixedly installed on the arc welding gun 6, the annular laser gun 3 and the induction laser gun 7 are movably installed on the laser gun clamping device 4, so that the angle and the distance between the annular laser gun 3 and the arc welding gun 6 and the angle and the distance between the induction laser gun 7 and the arc welding gun 6 are adjustable.
Further, the arc welding gun is vertical to the substrate, the dry extension of the arc welding gun is 10-20 mm, the forming current is 10-300A, and the moving speed of the arc welding gun is 0.24-0.84 m/min; the diameter of the welding wire is 0.8 mm-1.4 mm; the protective gas is argon or carbon dioxide, and the flow of the protective gas is 5L/min-20L/min.
Further, the power of the annular laser is 800 w-1500 w, and the diameter of a light spot is 1 mm-10 mm; the induced laser power is 300 w-800 w, and the spot diameter is 1 mm-10 mm.
The following are specific examples:
example 1
The additive manufacturing targets in this embodiment are: an aluminum alloy straight wall structure having a length of 500mm, a width of 25mm and a height of 400mm, as shown in fig. 3. By adopting the high-precision electric arc additive manufacturing method and device based on the size of the laser stabilized molten pool, the high-precision forming of the aluminum alloy straight wall is realized. The method comprises the following specific steps:
a device platform: the angle between the annular laser gun and the central shaft of the arc welding gun is 30 degrees, the annular laser gun directly acts on the first layer of accumulated metal, and the central point of the annular light spot is positioned on the central shaft of the arc welding gun; the angle of the induction laser gun is adjusted to form an angle of 60 degrees with the central axis of the arc welding gun, and then the spot diameter of the induction laser gun is adjusted to be the same as the diameter of the annular laser action area, so that the laser beam gasifies and ionizes the metal in the annular laser area and induces the electric arc in the area.
Importing a program file: drawing a straight wall model file through UG three-dimensional modeling software, exporting an stl file, slicing on eclipse software by using a slicing program to form src and dat files, and importing the src and dat files into a robot control platform.
Setting arc forming parameters: the arc welding gun is vertical to the workbench, the substrate is made of 1060 aluminum alloy, ER2319 aluminum alloy wire with the diameter of 1.2mm is selected, the dry elongation is 12mm, argon is selected as protective gas, the gas flow is 15L/min, the forming current is 90-120A, and the moving speed of the arc welding gun is 0.36 m/min.
Laser parameter setting: selecting a fiber laser, and enabling an annular laser gun to form an annular light spot with the diameter of 6mm through a power adjusting button of a light splitter, wherein the power reaches 1000 w; the power of the induction laser gun was 700 w.
Forming: and performing the arc fuse additive manufacturing of the metal straight wall structure according to the parameter setting.
After the whole operation process is finished, the size and the surface precision of the final formed component are measured by a three-dimensional measuring instrument, and the measurement result shows that the forming precision of the formed component is within +/-0.51 mm.
Example 2
The embodiment adopts a high-precision electric arc additive manufacturing method and a device based on the size of a laser stable molten pool to manufacture a target component: a high-precision three-way pipe joint for buildings is shown in figure 4. The method comprises the following specific steps:
a device platform: the angle between the annular laser gun and the central shaft of the arc welding gun is 45 degrees, the annular laser gun directly acts on the first layer of accumulated metal, and the central point of the annular light spot is positioned on the central shaft of the arc welding gun; the angle of the induction laser gun is adjusted to form an angle of 30 degrees with the central axis of the arc welding gun, and then the spot diameter of the induction laser gun is adjusted to be the same as the diameter of the annular laser action area, so that the laser beam gasifies and ionizes the metal in the annular laser area and induces the electric arc in the area.
Importing a program file: drawing a three-way pipe joint model through UG three-dimensional modeling software, exporting stl files, slicing on eclipse software by using a slicing program to form src and dat files, and importing the src and dat files into a robot control platform.
Setting arc forming parameters: the arc welding gun is vertical to the workbench, the substrate is Q235, ER50-6 wire with the diameter of 1.2mm is selected, the dry elongation is 12mm, carbon dioxide is selected as protective gas, the gas flow is 15L/min, the forming current is 160-180A, and the moving speed of the arc welding gun is 0.42 m/min.
Laser parameter setting: selecting a fiber laser, and enabling an annular laser gun to form an annular light spot with the diameter of 8mm through a power adjusting button of a light splitter, wherein the power reaches 1200 w; the power of the induced laser gun was 800 w.
Forming: and performing arc fuse additive manufacturing on the three-way pipe joint component according to the parameter setting.
After the accumulation is finished, the size and the surface precision of the final forming component are measured by a three-dimensional measuring instrument, and the measuring result shows that the forming precision of the forming component is within +/-0.85 mm.
Example 3
The embodiment adopts a high-precision electric arc additive manufacturing method and a device based on the size of a laser stable molten pool to manufacture a target component: rocket thrust chamber structure, as shown in figure 5. The method comprises the following specific steps:
a device platform: the angle between the annular laser gun and the central shaft of the arc welding gun is 60 degrees, the annular laser gun directly acts on the first layer of accumulated metal, and the central point of the annular light spot is positioned on the central shaft of the arc welding gun; the angle of the induction laser gun is adjusted to form an angle of 15 degrees with the central axis of the arc welding gun, and then the spot diameter of the induction laser gun is adjusted to be the same as the diameter of the annular laser action area, so that the laser beam gasifies and ionizes the metal in the annular laser area and induces the electric arc in the area.
Importing a program file: drawing a rocket thrust chamber structural member model through UG three-dimensional modeling software, exporting stl files, slicing on eclipse software by using a slicing program to form src and dat files, and importing the src and dat files into a robot control platform.
Setting arc forming parameters: the arc welding gun is vertical to the workbench, the substrate is Q235, ER70 wire with the diameter of 1.2mm is selected, the dry elongation is 12mm, carbon dioxide is selected as protective gas, the gas flow is 15L/min, the forming current is 180-grade and 200A, and the moving speed of the arc welding gun is 0.5 m/min.
Laser parameter setting: selecting a fiber laser, and enabling an annular laser gun to form an annular light spot with the diameter of 5mm through a power adjusting button of a light splitter, wherein the power reaches 800 w; the power of the induced laser gun was 600 w.
Forming: and performing arc fuse additive manufacturing on the thrust chamber structural part according to the parameter setting.
After the accumulation is finished, the size and the surface precision of the final formed component are measured by a three-dimensional measuring instrument, and the measurement result shows that the forming precision of the formed component is within +/-0.72 mm.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. An electric arc additive manufacturing method based on laser stabilization of a molten pool size is characterized by comprising the following steps:
s1, enabling a beam of annular laser to act on the metal substrate to form an annular molten pool on the metal substrate; simultaneously, the other beam of induced laser acts on the central area of the annular molten pool, and the central area of the annular molten pool is heated to generate metal vapor which is ionized to form charged particles, so that the conductivity of the central area of the annular molten pool is improved, and further, the electric arc for melting wires is induced to the central area of the annular molten pool to form an electric arc molten pool; the electric arc melting pool and the annular melting pool form an integral melting pool with stable size, and the metal of the integral melting pool becomes a first layer of metal formed by accumulation after solidification;
s2, enabling a ring laser to act on the newly formed layer of metal to form a ring-shaped molten pool on the newly formed layer of metal; simultaneously, the other beam of induced laser acts on the central area of the annular molten pool, and the central area of the annular molten pool is heated to generate metal vapor which is ionized to form charged particles, so that the conductivity of the central area of the annular molten pool is improved, and further, the electric arc for melting wires is induced to the central area of the annular molten pool to form an electric arc molten pool; the electric arc melting pool and the annular melting pool form an integral melting pool with stable size, and the metal of the integral melting pool becomes the next layer of metal formed by accumulation after solidification;
and S3, repeating the step S2 until the arc additive manufacturing and forming of the metal component are completed.
2. The laser-stabilized weld puddle size-based arc additive manufacturing method according to claim 1, wherein the ring laser power is 800 w-1500 w and the induction laser power is 300 w-800 w.
3. The method of claim 1, wherein the arc torch generates an arc with a dry extension of 10mm to 20mm and a forming current of 10A to 300A.
4. The laser-stabilized weld puddle size-based arc additive manufacturing method of claim 3, wherein the arc torch travel speed is between 0.24m/min and 0.84 m/min.
5. The method for arc additive manufacturing based on laser stabilization of molten pool size according to claim 1, wherein argon or carbon dioxide is used as a shielding gas during the whole arc additive manufacturing forming process, and the flow rate of the shielding gas is 5L/min-20L/min.
6. The laser-stabilized weld puddle size-based arc additive manufacturing method of any one of claims 1-5, wherein a system for implementing the method includes an arc generating device and a laser device, wherein: the arc generating device comprises an arc welding gun (6) and a robot (2) for driving the arc welding gun (6) to move; the laser device comprises a laser gun clamping device (4), an annular laser gun (3) and an induced laser gun (7), wherein the laser gun clamping device (4) is fixedly installed on an arc welding gun (6), the annular laser gun (3) and the induced laser gun (7) are installed on the laser gun clamping device (4), the annular laser gun (3) is used for generating annular laser, and the induced laser gun (7) is used for generating induced laser.
7. The laser-stabilized weld pool size-based arc additive manufacturing method according to claim 6, wherein the annular laser gun (3) and the induction laser gun (7) are movably mounted on the laser gun holding device (4), so that the angle and the distance between the annular laser gun (3) and the arc welding gun (6) and the angle and the distance between the induction laser gun (7) and the arc welding gun (6) are adjustable.
8. The laser-stabilized weld puddle size-based arc additive manufacturing method according to claim 6, characterized in that the laser device further comprises a laser emitter (8) and a beam splitter (5), and the laser light emitted by the laser emitter (8) is supplied to the ring laser gun (3) and the induction laser gun (7) respectively through the beam splitter (5).
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