CN115401211A - Device and method for double-ultrasonic synchronous auxiliary metal laser fuse additive manufacturing - Google Patents
Device and method for double-ultrasonic synchronous auxiliary metal laser fuse additive manufacturing Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
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- B22F10/50—Treatment of workpieces or articles during build-up, e.g. treatments applied to fused layers during build-up
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/90—Means for process control, e.g. cameras or sensors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention provides a device and a method for double-ultrasonic synchronous auxiliary metal laser fuse additive manufacturing, which comprises a numerical control machine, a sample mounting table, an ultrasonic vibration system, an ultrasonic micro-forging system and a laser fuse additive manufacturing system; the ultrasonic micro-forging system and the laser fuse additive manufacturing system are arranged on the numerical control machine tool and can synchronously move relative to the sample mounting table; the method has the advantages that the ultrasonic energy field can be continuously applied to the molten pool in the laser fuse wire additive manufacturing process until the additive manufacturing work of a sample is completed, under the combined action of ultrasonic vibration and ultrasonic micro-forging, plastic deformation is generated on the surface of a deposition layer in the additive manufacturing process, the molten pool is continuously influenced by the cavitation precipitation effect of ultrasonic waves and the sound flow stirring effect, crystal grains are refined, and the performance is improved.
Description
Technical Field
The invention relates to the field of metal additive manufacturing, in particular to a device and a method for double-ultrasonic synchronous auxiliary metal laser fuse additive manufacturing.
Background
Additive Manufacturing (AM) employs a layer-by-layer additive material method to fabricate solid parts. Additive manufacturing uses computer-aided system direct forming, and this unique function allows AM to directly produce workpieces with complex geometries without the need for expensive tooling, and reduces many of the conventional processing steps, greatly reducing processing time. The complex parts conforming to the design can be completed in one step without the limitation of the traditional processing method (such as straight cutting and circular hole) or the commercial shape (such as thin plate and tubular product). Furthermore, additive manufacturing can also significantly reduce the number of parts by eliminating or reducing the need to assemble multiple parts. And parts can be produced as required, so that spare part inventory is reduced, and cost is reduced. Due to these advantages of additive manufacturing, the related standards of additive manufacturing technology are slowly perfected under the efforts of colleges and universities, research institutes and companies in various strong countries. The process is mature gradually, and is applied to the field of manufacturing industry to a great extent at present.
The laser fuse wire additive manufacturing technology (WLAM) is a process of gradually forming a three-dimensional entity by using laser as an energy source and metal wire materials as raw materials and realizing the accumulation from point to line to surface through digital automatic control. Compared with the traditional material reduction manufacturing, the laser fuse wire additive manufacturing does not need a die, has high material utilization rate, can be directly formed, has higher flexibility, short period and low cost, has quick response capability to the structural design change of parts, is easier to realize automation and intellectualization, and has great application potential in the field of manufacturing large metal parts. In the laser fuse wire additive manufacturing process, the metal wire is heated and melted on the substrate to form a molten pool, the substrate and the deposition layer are continuously heated, and the heat dissipation effect of the former deposition layer is weaker and weaker along with the increase of the forming height, so that the thermal conditions of each layer of the workpiece are different. In the process, the melting, solidification and cooling of the wire are carried out in a short time, which causes a large temperature gradient between a molten pool and a substrate, generates thermal stress and residual stress, and further easily forms cracks, pores, poor interlayer bonding and other defects in a metal deposition layer, and finally causes the reduction of the mechanical property of a workpiece. Therefore, how to improve the internal microstructure of the material, reduce the internal defects of the material, reduce and eliminate the internal residual stress of the metal part manufactured by the additive manufacturing, and improve the mechanical property of the metal part is an important research direction in the field of the additive manufacturing of the laser fuse at present.
In order to improve the structure and appearance of a deposition layer in the additive manufacturing process of a laser fuse and improve the mechanical property of the deposition layer, the aim is fulfilled by a mode of assisting additive manufacturing by an external force field or an external energy field. For example, in the process of laser fuse wire additive manufacturing, the sample is deformed by mechanical hammering, the coarse columnar beta grain structure of the titanium alloy is effectively refined, and centimeter-level beta-crystalline grains can be obtained
The average grain size is reduced to about 0.5mm, and the preferred orientation of the texture can be reduced, so that the anisotropy of the texture is improved. However, the method has large impact force, large damage to the appearance of the sample and difficult forming of the sample with small size. Researchers at Beijing physical engineering university apply ultrasonic impact technology to additive manufacturing samples, and find that the tissues of the parts subjected to ultrasonic impact treatment are obviously refined and the residual stress is obviously reduced. However, in this way, the ultrasonic energy mainly acts on the solidified sedimentary deposit, the main effects of the ultrasonic are mechanical effect and thermal effect, and the cavitation effect and acoustic flow effect on the molten pool are not significant. Researchers at the state university of Yangston, USA, proposed a method for improving the coarseness of grains in the solidification process by using ultrasonic vibration, and found that the interaction of ultrasonic amplitude and power has a remarkable refining effect on the grains, and the microhardness is also improved. However, the method mainly comprises the steps that ultrasonic waves penetrate through a sample and then interfere a molten pool of the sample by applying an ultrasonic energy field to the bottom of the sample, when the ultrasonic power is too high, the molten pool is subjected to violent vibration, the forming quality of the surface of a deposition layer is poor, and when the ultrasonic power is low, the acoustic current effect and the cavitation effect on the molten pool are not obvious, so that the purpose of grain refinement is difficult to achieve. The existing method for improving the additive manufacturing organization and performance of the metal laser fuse has certain limitations, and the popularization and application of the additive manufacturing technology of the metal laser fuse are seriously hindered in the state.
Disclosure of Invention
The invention provides a device and a method for double-ultrasonic synchronous auxiliary metal laser fuse additive manufacturing. Under the combined action of ultrasonic vibration and ultrasonic micro-forging, plastic deformation is generated on the surface of the deposition layer, and crystal grains are refined by utilizing the cavitation gas separation effect and the sound flow stirring uniform effect of ultrasonic waves. If the surface and the sub-surface of the material have defects such as pores, microcracks and the like, the material can be 'healed' by the ultrasonic energy field. The structure and mechanical properties of the deposited layer in the metal laser fuse additive manufacturing can be improved by applying an ultrasonic energy field.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the device for double-ultrasonic synchronous auxiliary metal laser fuse additive manufacturing comprises a numerical control machine tool system, a sample mounting table, an ultrasonic vibration system, an ultrasonic micro-forging system and a laser fuse additive manufacturing system. The sample mounting table fix on digit control machine tool test platform, ultrasonic vibration system sets up in the below of sample mounting table and fixes the intermediate position at the mounting table, and the synchronous motion is realized at digit control machine tool fixed plate position to supersound micro-forging system and laser fuse vibration material disk system installation. The ultrasonic energy field can be continuously applied to the molten pool in the laser fuse additive manufacturing process until the sample printing work is completed. The method for manufacturing the metal laser fuse additive by double ultrasonic synchronous assistance comprises the following specific steps:
s1, melting a metal wire by using a laser fuse wire additive manufacturing system to form a liquid molten pool, and performing an additive manufacturing process according to a programmed path;
s2, applying ultrasonic cavitation effect and acoustic current effect to the liquid molten pool by using an ultrasonic vibration system to solidify the molten pool under the continuous action of an ultrasonic energy field so as to achieve the purpose of refining grains;
and S3, forming a deposition layer after the liquid molten pool is solidified, wherein the deposition layer is in a softening state at a position 25mm away from the molten pool, so that the forging head is in contact with the deposition layer, and synchronously applying ultrasonic micro-forging to the deposition layer in the additive manufacturing process by utilizing an ultrasonic micro-forging system.
The invention also comprises such features:
preferably, the ultrasonic vibration system comprises a first ultrasonic generator, a first transducer and a first amplitude transformer; the sample mounting table comprises a substrate fixing device and an ultrasonic coupling device; the ultrasonic coupling device is connected with a first transducer, the first amplitude transformer is rigidly connected with the first transducer, and the first transducer is connected with a first ultrasonic generator.
The ultrasonic micro-forging system comprises a second ultrasonic generator, a second transducer, a second amplitude transformer and a micro-forging head; the second amplitude transformer, the second energy converter and the second ultrasonic generator are sequentially connected, and the micro forging head is rigidly connected with the second amplitude transformer, so that the working frequency of the micro forging head can reach the ultrasonic frequency.
The ultrasonic vibration system is fixed below the substrate, and the first amplitude transformer is tightly attached to the printing substrate in the whole deposition process through the ultrasonic coupling device. The ultrasonic micro-forging head is designed into a flat head, and compared with an impact needle, the contact area between the ultrasonic micro-forging head and a deposition layer is increased, so that ultrasonic energy can be transmitted more favorably.
The ultrasonic micro-forging system and the laser fuse additive manufacturing system are coupled together and are jointly installed at the position of a fixing plate of a numerical control machine tool, the effective action distance adjusting range of the two systems is 10-50mm, and synchronous movement can be realized relative to a sample installation table under the control of a set corresponding program by adjusting the action distance of the two systems according to different deposition materials.
The laser power control range of the laser fuse additive manufacturing system is 3000W-3900W.
The scanning speed control range of the laser fuse additive manufacturing system is 4.8mm/s-7.3mm/s.
The wire feeding speed control range of the laser fuse additive manufacturing system is 20-28 mm/s.
The wire feeding angle of the laser fuse additive manufacturing system is 20 degrees, the diameter of a light spot is 6mm, and the gas flow is 20L/min.
The ultrasonic frequency of the ultrasonic micro-forging system is 20kHz, and the amplitude of the ultrasonic is 0-22 μm.
The ultrasonic frequency of the ultrasonic vibration system is 20kHz, and the ultrasonic power is 0-1000W.
The invention has the beneficial effects that:
(1) The invention carries out ultrasonic treatment on the sedimentary deposit of metal laser fuse wire additive manufacturing through the ultrasonic micro-forging system and the ultrasonic vibration system, under the coupling action of two sets of ultrasonic equipment, the invention not only ensures the effect of ultrasonic wave on molten pool interference and continuously and stably refines the structure of the sedimentary deposit, but also can carry out certain plastic deformation on the surface layer of the sedimentary deposit, and because the ultrasonic can be transmitted in the whole workpiece, the ultrasonic vibration can effectively weaken the residual stress generated in the laser fuse wire additive manufacturing process.
(2) Compared with a mode of only applying an ultrasonic energy field, the method for synchronously assisting the metal laser fuse additive manufacturing organization and performance by using double ultrasonic waves has more remarkable cavitation effect and acoustic flow effect of ultrasonic waves on a molten pool.
(3) The ultrasonic micro-forging system is coupled with the laser fuse additive manufacturing system in the method, and the ultrasonic micro-forging treatment can be synchronously applied in the additive manufacturing process, so that ultrasonic energy directly acts in the additive manufacturing process and a certain plastic deformation is generated on a deposition layer; the ultrasonic vibration system in the method provided by the invention is applied below the substrate, so that the ultrasonic energy can continuously act on the molten pool in the whole deposition process.
(4) Under the coupling action of two sets of equipment, namely ultrasonic micro-forging and ultrasonic vibration, the coarse dendritic crystals are broken, the input of ultrasonic energy can also cause the proliferation, movement and rearrangement of dislocation, and meanwhile, the distortion and slippage of crystal lattices occur, so that the surface of a deposited layer is subjected to severe plastic deformation; the structure and the performance of the deposited layer manufactured by the laser fuse additive are improved under the combined action of fine grain strengthening, deformation strengthening and defect and micro-crack elimination in the sample.
Drawings
Fig. 1 is an overall schematic diagram of a device for additive manufacturing of a metal laser fuse with double ultrasonic synchronous assistance, according to the present invention: wherein a is a numerical control machine tool system, and b is a double-ultrasonic synchronous auxiliary laser fuse additive manufacturing system.
FIG. 2 is an enlarged schematic view of a dual ultrasonic synchronous assist laser fuse additive manufacturing system: wherein 1 is a laser fuse wire additive manufacturing system, 2 is a sample mounting table, 3 is an ultrasonic vibration system, and 4 is an ultrasonic micro-forging system.
Fig. 3 is a schematic structural diagram of an ultrasonic vibration system: wherein 3.1 is a first ultrasonic generator, 3.2 is a first transducer, and 3.3 is a first horn.
FIG. 4 is a schematic structural diagram of an ultrasonic micro-forging system: wherein 4.1 is a second ultrasonic generator, 4.2 is a second transducer, 4.3 is a second horn, and 4.4 is a micro-forging head.
Detailed Description
In order to make the technical solution of the present invention more clear, the detailed description is further described with reference to the accompanying drawings and the specific embodiments.
The invention relates to a device and a method for dual-ultrasonic synchronous auxiliary metal laser fuse additive manufacturing, wherein a high-intensity ultrasonic energy field is introduced into a laser fuse additive manufacturing process, and simultaneously the interference effect of the ultrasonic energy field on a molten pool and the impact strengthening effect on a solid deposition layer are exerted, so that the structure and the performance of a laser fuse additive manufacturing metal component can be effectively improved, and the problems of non-uniform structure and relatively poor mechanical performance caused by large temperature gradient and high cooling speed in the laser fuse additive manufacturing process are solved.
As shown in FIGS. 1-4, the invention provides a device for dual-ultrasonic synchronous auxiliary metal laser fuse additive manufacturing, which comprises a numerical control machine system a, a laser fuse additive manufacturing system 1, a sample mounting table 2, an ultrasonic vibration system 3 and an ultrasonic micro-forging system 4. The laser fuse wire additive manufacturing system 1 and the ultrasonic micro-forging system 4 are fixed on a numerical control machine tool system a, the effective action distance adjusting range of the two systems is 10-50mm, and synchronous movement can be realized relative to the sample mounting table 2 under the control of a set corresponding program by adjusting the action distance of the two systems according to different deposition materials. The ultrasonic vibration system 3 is fixed below the sample mounting table 2 and is tightly attached to the printing substrate, so that ultrasonic energy can continuously act on a molten pool in the printing process.
The laser power of the laser fuse additive manufacturing system 1 is preferably 3300W, the spot diameter is preferably 6mm, and the laser scanning speed is preferably 288mm/min.
The ultrasonic vibration system 3 comprises a first ultrasonic generator 3.1, a first transducer 3.2 and a first amplitude transformer 3.3; the first amplitude transformer 3.3, the first energy converter 3.2 and the first ultrasonic generator 3.1 are connected in sequence, the first energy converter 3.2 is connected to the sample mounting table 2 through an ultrasonic coupling device, the output power of the ultrasonic vibration system is preferably 1000W, and the ultrasonic frequency is 20kHz.
Before the deposition work is started, the ultrasonic vibration system positioned below the substrate starts to work firstly, the ultrasonic vibration system can be ensured to act on the whole deposition process, and after the metal wire is melted to form a liquid molten pool, the liquid molten pool is influenced by the cavitation effect and the acoustic current effect of the ultrasonic. When ultrasonic vibration treatment is carried out on the molten pool, ultrasonic waves are transmitted in the molten pool to generate a cavitation effect, when cavitation bubbles are broken, strong shock waves and microjets can be generated to generate remarkable mechanical stirring force on liquid metal in the molten pool, so that dendritic crystals are broken to generate more crystal nuclei, the broken dendritic crystals continue to nucleate and grow under the action of the ultrasonic waves, the growth of adjacent crystal grains is inhibited, and the effect of refining the crystal grains is achieved. The sound flow effect generated by the transmission of the ultrasonic wave in the molten pool can enable the fine crystal nuclei to be distributed more uniformly, and the molten pool generates high temperature and high pressure in the process, and the high temperature and high pressure can increase the supercooling degree of the alloy melt in the molten pool, so that the nucleation rate is improved, and finally, a sample with fine microstructure and grain size is obtained.
The ultrasonic micro-forging system 4 comprises a second ultrasonic generator 4.1, a second transducer 4.2, a second amplitude transformer 4.3 and a micro-forging head 4.4; the second ultrasonic generator 4.1, the second transducer 4.2, the second amplitude transformer 4.3 and the micro-forging head 4.4 are connected in sequence, the second transducer 4.2 is fixed at the position of a fixed plate of a numerical control machine tool system a, the output amplitude of the ultrasonic micro-forging system is 22 mu m, and the ultrasonic frequency is 20kHz.
After the laser melts the wire to form a partial deposition layer, under the control of the numerical control machine tool system a, the micro-forging head 4.4 of the ultrasonic micro-forging system 4 starts to synchronously perform ultrasonic micro-forging treatment on the deposition layer 25mm away from the molten pool. The violent plastic deformation is generated on the surface of the settled layer, so that a layer of fine crystalline regions are generated on the surface of the settled layer, and meanwhile, the ultrasonic energy can be transmitted into the liquid molten pool through the settled layer, so that the crystal grains are further refined under the influence of the acoustic flow effect and the cavitation effect, and the growth of coarse columnar dendritic crystals can be effectively inhibited.
The invention also provides a method for manufacturing the dual-ultrasonic synchronous auxiliary metal laser fuse additive, which comprises the following specific steps:
preparation for laser fuse additive manufacturing. Before the laser fuse wire additive manufacturing, an angle grinder is needed to polish the substrate, then medical cotton wetted by alcohol is used for cleaning the deposition substrate, oil stains on the surface of the substrate are removed, and the alcohol used by matching the medical cotton is absolute ethyl alcohol with the content of not less than 99.7%. The use of an angle grinder and alcohol wool to grind and clean the surface of the deposition substrate can minimize the impact of other factors on laser fuse additive manufacturing of shaped metal components.
Laser fuse additive manufacturing shapes metal components. The laser fuse additive manufacturing system and the ultrasonic micro-forging system move synchronously, and the ultrasonic vibration system continuously acts at a fixed position below the substrate. And reasonably planning the path of the workpiece according to the shape of the workpiece, and setting parameters of a related laser fuse additive manufacturing system, an ultrasonic micro-forging system and an ultrasonic vibration system, so that the ultrasonic micro-forging system and the ultrasonic vibration system jointly act on a deposition layer molten pool in the printing process. The influence of the ultrasonic on the cavitation effect and the acoustic flow effect of the molten pool and the plastic deformation of the surface of the deposition layer are ensured.
The specific parameters of the laser fuse additive manufacturing system are 3100W laser power, 4mm/s scanning speed and 20mm/s wire feeding speed; the specific parameters of the ultrasonic micro-forging system are ultrasonic amplitude of 22 mu m and ultrasonic frequency of 20kHz. The distance between the ultrasonic micro-forging and the laser fuse wire additive manufacturing is 25mm, and the ultrasonic micro-forging vertically acts on a deposition layer; specific parameters of ultrasonic vibration system
The ultrasonic power is 1000W, the ultrasonic frequency is 20kHz, and the ultrasonic amplitude is 16 mu m.
The invention provides a device and a method for dual-ultrasonic synchronous auxiliary metal laser fuse additive manufacturing, wherein the coupling effect of ultrasonic energy fields in two directions is introduced in the laser fuse additive manufacturing process, the solidification process of a liquid molten pool is influenced through the acoustic flow effect and the cavitation effect of ultrasonic, and meanwhile, a settled layer generates certain plastic deformation through micro-forging, so that the purposes of refining crystal grains and improving the mechanical property of an additive manufacturing part are achieved.
In conclusion: the invention provides a device for double-ultrasonic synchronous auxiliary metal laser fuse additive manufacturing. The sample mounting table fix on digit control machine tool test platform, the ultrasonic vibration system sets up in the below of sample mounting table and fixes the intermediate position at the mounting table, and supersound micro-forging system and laser fuse vibration material disk system install in digit control machine tool fixed plate position, under the control of digit control machine tool, can realize synchronous motion for the sample mounting table. Under the combined action of ultrasonic vibration and ultrasonic micro-forging, plastic deformation is generated on the surface of a deposition layer in the additive manufacturing process, a molten pool is continuously influenced by the cavitation precipitation effect of ultrasonic waves and the acoustic flow stirring effect, crystal grains are refined, and the performance is improved. If the surface and the sub-surface of the material have defects such as pores, microcracks and the like, the material can be 'healed' by the ultrasonic energy field.
Claims (9)
1. The utility model provides a device of supplementary metal laser fuse vibration material disk of two supersonics synchronization which characterized in that: the device comprises a numerical control machine tool, a sample mounting table, an ultrasonic vibration system, an ultrasonic micro-forging system and a laser fuse additive manufacturing system; the ultrasonic micro-forging system and the laser fuse additive manufacturing system are arranged on the numerical control machine tool and can synchronously move relative to the sample mounting table; the ultrasonic energy field can be continuously applied to the molten pool in the laser fuse additive manufacturing process until the additive manufacturing work of the sample is completed.
2. The apparatus of claim 1, wherein the apparatus comprises: the ultrasonic vibration system comprises a first ultrasonic generator, a first transducer and a first amplitude transformer; the sample mounting table comprises a substrate fixing device and an ultrasonic coupling device; the substrate fixing device is used for fixing a substrate, the ultrasonic coupling device is connected with a first transducer, the first amplitude transformer is rigidly connected with the first transducer, and the first transducer is connected with a first ultrasonic generator; the ultrasonic micro-forging system comprises a second ultrasonic generator, a second transducer, a second amplitude transformer and a micro-forging head; the second amplitude transformer, the second energy converter and the second ultrasonic generator are sequentially connected, and the micro forging head is rigidly connected with the second amplitude transformer.
3. The apparatus of claim 2, wherein the apparatus comprises: the ultrasonic vibration system is fixed below the substrate, and the first amplitude transformer is tightly attached to the substrate in the whole deposition process through the ultrasonic coupling device.
4. The apparatus of claim 3, wherein the apparatus comprises: the ultrasonic micro-forging system and the laser fuse additive manufacturing system are arranged at the position of a fixing plate of a numerical control machine tool, the effective action distance adjusting range of the two systems is 10-50mm, and synchronous movement can be realized relative to a sample mounting table under the control of a set corresponding program by adjusting the action distance of the two systems according to different deposition materials.
5. The apparatus of claim 4, wherein the apparatus comprises: the power adjusting range of the ultrasonic vibration system is 0-1000W, and the ultrasonic frequency is 20kHz; the ultrasonic amplitude adjusting range of the ultrasonic micro-forging system is 0-22 mu m, and the ultrasonic frequency is 20kHz.
6. A method for double-ultrasonic synchronous auxiliary metal laser fuse additive manufacturing is characterized by comprising the following steps: the method comprises the following steps:
s1, melting a metal wire by using a laser fuse wire additive manufacturing system to form a liquid molten pool, and performing additive manufacturing according to a programmed path;
s2, applying ultrasonic cavitation effect and acoustic flow effect to the liquid molten pool by using an ultrasonic vibration system to solidify the molten pool under the continuous action of an ultrasonic energy field;
and S3, forming a deposition layer after the liquid molten pool is solidified, wherein the deposition layer is in a softening state at a position 25mm away from the molten pool, so that the forging head is in contact with the deposition layer, and synchronously applying ultrasonic micro-forging to the deposition layer by utilizing an ultrasonic micro-forging system.
7. The method of dual ultrasonic synchronous assisted metal laser fuse additive manufacturing of claim 6, wherein: the laser power control range of the laser fuse additive manufacturing system is 3000W-3900W, the scanning speed control range is 4.8mm/s-7.3mm/s, the wire feeding speed control range is 20mm/s-28mm/s, the wire feeding angle is 20 degrees, the diameter of a light spot is 6mm, and the gas flow is 20L/min.
8. The method of dual ultrasonic synchronous assisted metal laser fuse additive manufacturing of claim 6, wherein: the ultrasonic frequency of the ultrasonic micro-forging system is 20kHz, and the ultrasonic amplitude is 0-22 μm.
9. The method of dual ultrasonic synchronous assisted metal laser fuse additive manufacturing of claim 6, wherein: the ultrasonic frequency of the ultrasonic vibration system is 20kHz, and the ultrasonic power is 0-1000W.
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