CN113664222B - Composite laser device and method for directional energy deposition equipment - Google Patents
Composite laser device and method for directional energy deposition equipment 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
- 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
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/66—Treatment of workpieces or articles after build-up by mechanical means
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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
- B22F12/40—Radiation means
- B22F12/41—Radiation means characterised by the type, e.g. laser or electron beam
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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
- B22F12/40—Radiation means
- B22F12/44—Radiation means characterised by the configuration of the radiation means
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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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
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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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- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
- B33Y40/20—Post-treatment, e.g. curing, coating or polishing
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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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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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
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Abstract
The invention discloses a compound laser device and a method for directional energy deposition equipment; the laser comprises a first laser, a second laser and a laser processing head connected with the first laser and the second laser; the laser of the first laser is sequentially transmitted to a first beam expanding collimating lens, a beam combining lens and a focusing lens, and then is emitted from a light emitting hole of a nozzle and focused on a processing plane to be used as an infrared light spot; the laser of the second laser is sequentially transmitted to a second beam expanding collimating lens and a total reflecting mirror, the total reflecting mirror reflects the laser to a beam combining lens, the beam combining lens reflects the laser to a focusing lens, and finally the laser is emitted from a light emitting hole of a nozzle and focused on a processing plane to be used as a blue-green light spot; after the infrared light spot and the blue-green light spot are focused by the focusing lens, a composite laser light spot is formed on the processing plane; the infrared light spots are used for melting metal powder to form a molten pool, the blue-green light spots are beneficial to improving the stability of the molten pool, reducing splashing, further reducing internal defects and greatly improving the forming quality of a workpiece.
Description
Technical Field
The invention relates to the technical field of laser processing of high-reflection materials, in particular to a composite laser device and a method for directional energy deposition equipment.
Background
A representative technology of directional energy deposition (Directed Energy Deposition, DED) technology additive manufacturing technology, the DED utilizes focused heat energy to synchronously melt conveyed powdery or linear materials, and performs layer-by-layer part manufacturing or single-layer cladding and repairing according to a preset track.
The laser directional energy deposition is used for manufacturing high-reflection material parts such as pure copper, and the like, so that excellent physical and chemical properties of the high-reflection material can be fully exerted, and the high-reflection material has wide application prospect.
However, the laser absorptivity of the high-reflectivity material is extremely low, and based on the prior art, it is difficult to obtain parts of the high-reflectivity material with excellent molding quality, which seriously affects and hinders the industrial application of the high-reflectivity material such as pure copper.
Disclosure of Invention
The invention aims to solve the problem that the laser processing of high-reflection materials such as pure copper is difficult, improve the performance of laser directional energy deposition forming of high-reflection material parts such as pure copper, and improve the current industrial application situation of the high-reflection materials such as pure copper; a composite laser apparatus and method for a directional energy deposition device are provided.
The invention is realized by the following technical scheme:
a composite laser device for a directional energy deposition apparatus, comprising a laser, and a laser processing head 4 connected thereto;
the laser comprises a first laser 1 and a second laser 2;
the laser processing head 4 includes: a first beam expansion collimator lens 21 and a second beam expansion collimator lens 15; a light converging lens 20, a total reflecting lens 16, a telescopic lens 17, a focusing lens 18 and a nozzle 19;
the first laser 1 sequentially transmits the laser light of the first laser 1 to the first beam expanding and collimating lens 21, the beam combining lens 20 and the focusing lens 18 through the first optical fiber 13, and then the laser light is emitted from the light emitting hole 33 of the nozzle 19 and focused on a processing plane to be used as a first light spot (the diameter is 3-5 mm);
the second laser 2 sequentially transmits the laser light of the second laser 2 to the second beam expansion collimating lens 15 and the total reflecting mirror 16 through the second optical fiber 14, the total reflecting mirror 16 reflects the laser light to the light combining lens 20, then the laser light is reflected to the focusing lens 18 through the light combining lens 20, finally the laser light is emitted from the light emitting hole 33 of the nozzle 19 and focused on a processing plane to be used as a second light spot (the diameter is 3-5 mm);
the first light spot is an infrared light spot;
the second light spot is a blue-green light spot;
the focusing lens 18 is a telescopic focusing lens;
the infrared light spot and the blue-green light spot are focused by the focusing lens 18, and then are emitted through the light emitting hole 33 of the nozzle 19, and then a composite laser light spot is formed on the processing plane.
The first laser 1 is an infrared fiber laser; the second laser 2 is a blue-green semiconductor laser.
The light converging lens 20 is an infrared light transmitting lens for reflecting blue-green light.
The beam expansion collimating lens 15 and the first beam expansion collimating lens 21 are used for expanding the laser beam and integrating the laser beam into parallel light; the total reflection mirror 16 and the light converging mirror 20 are parallel to each other, and the parallel angle is adjustable.
The directional energy deposition apparatus comprises a multi-axis articulated robot 3 to which the laser processing head 4 is fixed.
The multi-axis joint robot 3 is a six-axis joint robot.
The wavelength of the first laser 1 is 900 nm-1090 nm, and the beam quality M 2 Less than 1.1;
the wavelength of the second laser 2 is 450 nm-560 nm, and the beam quality M 2 Less than 1.1.
A method of composite laser forming comprising the steps of:
step one, a step one; a first light spot forming step:
the first laser 1 sequentially transmits the laser light of the first laser 1 to the first beam expanding and collimating lens 21, the light combining lens 20 and the focusing lens 18 through the first optical fiber 13, and then the laser light is emitted from the light emitting hole 33 of the nozzle 19 and focused into a first light spot on a processing plane;
step two, a step two is carried out; a second light spot forming step:
the second laser 2 sequentially transmits the laser light of the second laser 2 to the second beam expanding collimating lens 15 and the total reflecting mirror 16 through the second optical fiber 14, the total reflecting mirror 16 reflects the laser light to the light combining lens 20 at 90 degrees, the light combining lens 20 reflects the laser light to the focusing lens 18 at 90 degrees, and finally the laser light is emitted from the light emitting hole 33 of the nozzle 19 and focused into a second light spot on the processing plane;
step three, a step of performing; and a composite laser spot forming step:
the infrared light beam generated by the first laser 1 and the blue-green light beam generated by the second laser 2 enter the focusing lens 18 in parallel; the focusing lens 18 is adjusted so that the infrared beam and the blue-green beam gradually intersect at a point, and finally, a composite laser spot containing infrared light and blue-green light is formed on the processing plane.
The diameter of the composite laser spot is 3-5mm.
Compared with the prior art, the invention has the following advantages and effects:
the laser of the invention is divided into two paths: the first laser 1 sequentially transmits the laser light of the first laser 1 to the first beam expanding and collimating lens 21, the light combining lens 20 and the focusing lens 18 through the first optical fiber 13, and then the laser light is emitted from the light emitting hole 33 of the nozzle 19 and focused into a first light spot on a processing plane; the second laser 2 sequentially transmits the laser light of the second laser 2 to the second beam expanding collimating lens 15 and the total reflecting mirror 16 through the second optical fiber 14, the total reflecting mirror 16 reflects the laser light to the light combining lens 20 at 90 degrees, the light combining lens 20 reflects the laser light to the focusing lens 18 at 90 degrees, and finally the laser light is emitted from the light emitting hole 33 of the nozzle 19 and focused into a second light spot on the processing plane; the infrared light beam generated by the first laser 1 and the blue-green light beam generated by the second laser 2 enter the focusing lens 18 in parallel; the focusing lens 18 is adjusted so that the infrared beam and the blue-green beam gradually intersect at a point, and finally, a composite laser spot containing infrared light and blue-green light is formed on the processing plane. The laser processing head 4 of the invention enables the composite laser of the infrared laser and the blue-green laser to perform laser directional energy deposition of the high-reflection material, effectively solves the problems of low laser absorptivity and poor forming quality of the high-reflection material such as pure copper deposited by laser directional energy commonly existing in the prior art, greatly improves the performance of the high-reflection material parts such as the laser directional energy deposition and the forming of the high-reflection material such as the pure copper, and substantially improves the current industrial application situation of the high-reflection material such as the pure copper.
The infrared light spot and the blue-green light spot are focused by the focusing lens, and then are emitted through the light emitting hole of the nozzle, so that a composite laser light spot is formed on the processing plane. In a compound laser facula, the infrared light spot is used for melting metal powder to form a molten pool, and the blue-green facula is favorable for improving the stability of the molten pool, reducing splashing, further reducing internal defects and greatly improving the forming quality of a workpiece.
The focusing lens is a telescopic focusing lens so as to meet the requirement of automatic focusing, so that the forming process is more stable, and the forming quality is ensured.
The invention can realize direct manufacture and on-site repair of large-size parts, and greatly improves the size precision and the surface quality of the formed part by combining with the traditional milling method;
the invention combines an online monitoring system to monitor the forming process in real time, and feeds back and adjusts the size of the parts so as to improve the forming quality.
Drawings
Fig. 1 is a schematic diagram of the structural layout of the composite laser device of the present invention, and the coupling of the infrared laser and the blue-green laser.
FIG. 2 is a schematic diagram of the application of the composite laser device of the present invention to a conventional directional energy deposition apparatus.
Reference numerals: a first laser 1; a second laser 2; a multi-axis joint robot 3; a laser processing head 4; a tool magazine 5; a milling cutter 6; an integrated control system 7; a powder feeder 8; an on-line monitoring system 9; a gas cylinder 10; a two-axis positioner 11; a water chiller 12; through the first optical fiber; a second optical fiber 14; a second expanded beam collimator lens 15; a total reflection mirror 16; a focusing lens 18; a nozzle 19; a light combining mirror 20; a first expanded beam collimator lens 21.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Examples
As shown in fig. 1;
the invention discloses a compound laser device for directional energy deposition equipment, which comprises a laser and a laser processing head 4 connected with the laser;
the laser comprises a first laser 1 and a second laser 2;
the laser processing head 4 includes: a first beam expansion collimator lens 21 and a second beam expansion collimator lens 15; a light converging lens 20, a total reflecting lens 16, a telescopic lens 17, a focusing lens 18 and a nozzle 19;
the first laser 1 sequentially transmits the laser light of the first laser 1 to the first beam expanding and collimating lens 21, the beam combining lens 20 and the focusing lens 18 through the first optical fiber 13, and then the laser light is emitted from the light emitting hole 33 of the nozzle 19 and focused on a processing plane to be used as a first light spot (the diameter is 3-5 mm);
the second laser 2 sequentially transmits the laser light of the second laser 2 to the second beam expansion collimating lens 15 and the total reflecting mirror 16 through the second optical fiber 14, the total reflecting mirror 16 reflects the laser light to the light combining lens 20, then the laser light is reflected to the focusing lens 18 through the light combining lens 20, finally the laser light is emitted from the light emitting hole 33 of the nozzle 19 and focused on a processing plane to be used as a second light spot (the diameter is 3-5 mm);
the first light spot is an infrared light spot;
the second light spot is a blue-green light spot;
the focusing lens 18 is a telescopic focusing lens;
the infrared light spot and the blue-green light spot are focused by the focusing lens 18, and then are emitted through the light emitting hole 33 of the nozzle 19, so as to form a composite laser light spot on the processing plane.
In the composite laser light spot, the infrared light spot is used for melting metal powder to form a molten pool, the blue-green light spot is beneficial to improving the stability of the molten pool, reducing splashing, further reducing internal defects and improving the forming quality of a workpiece.
The first laser 1 is an infrared fiber laser; the second laser 2 is a blue-green semiconductor laser.
The light combining lens 20 is an infrared light transmitting lens that reflects blue-green light, i.e., can reflect blue-green light by infrared light.
The beam expansion collimating lens 15 and the first beam expansion collimating lens 21 are used for expanding the laser beam and integrating the laser beam into parallel light; the total reflection mirror 16 and the light converging mirror 20 are parallel to each other, and the parallel angle is adjustable.
The directional energy deposition apparatus comprises a multi-axis articulated robot 3 to which the laser processing head 4 is fixed.
The multi-axis joint robot 3 is a six-axis joint robot, although other robots may be used.
The wavelength of the first laser 1 is 900 nm-1090 nm, and the beam quality M 2 Less than 1.1;
the wavelength of the second laser 2 is 450 nm-560 nm, and the beam quality M 2 Less than 1.1.
The powder outlet holes are distributed around the nozzle 19, which is not described in detail in the prior art;
the composite laser spot forming process of the invention is as follows:
step one, a step one; a first light spot forming step:
the first laser 1 sequentially transmits the laser light of the first laser 1 to the first beam expanding and collimating lens 21, the light combining lens 20 and the focusing lens 18 through the first optical fiber 13, and then the laser light is emitted from the light emitting hole 33 of the nozzle 19 and focused into a first light spot on a processing plane;
step two, a step two is carried out; a second light spot forming step:
the second laser 2 sequentially transmits the laser light of the second laser 2 to the second beam expanding collimating lens 15 and the total reflecting mirror 16 through the second optical fiber 14, the total reflecting mirror 16 reflects the laser light to the light combining lens 20 at 90 degrees, the light combining lens 20 reflects the laser light to the focusing lens 18 at 90 degrees, and finally the laser light is emitted from the light emitting hole 33 of the nozzle 19 and focused into a second light spot on the processing plane;
step three, a step of performing; and a composite laser spot forming step:
the infrared light beam generated by the first laser 1 and the blue-green light beam generated by the second laser 2 enter the focusing lens 18 in parallel; the focusing lens 18 is adjusted so that the infrared beam and the blue-green beam gradually intersect at a point, and finally, a composite laser spot containing infrared light and blue-green light is formed on the processing plane.
The diameter of the composite laser spot is 3-5mm.
Fig. 2 shows, to more visually illustrate the invention, a brief working procedure in connection with the present directed energy deposition apparatus, as follows:
(1) Filling high-reflection metal powder material with the particle size of 15-150 mu m into the powder feeder 8;
(2) Importing the processed three-dimensional data model of the part into an integrated control system 7, and setting forming process parameters;
(3) Starting a water chiller 12, an online monitoring system 9 and a powder feeder 8, and starting a gas cylinder 10;
(4) The multi-axis joint robot goes to the tool library 4 to clamp the laser processing head and returns to the directional energy deposition starting point;
(5) Starting the first laser 1 and the second laser 2, automatically adjusting the focal length of a focusing lens 18 (a telescopic lens) according to set technological parameters, generating a composite light spot with proper size on a processing plane, and starting directional energy deposition according to program setting;
(6) After the directional energy is deposited in a plurality of layers, suspending the directional energy deposition process, carrying out milling processing or compensating in a plurality of next layers according to difference information of the part size data and the part design size obtained by an on-line monitoring system (9), until the part manufacturing is completed;
(7) Placing the laser processing head 4 back to the tool magazine 5, returning the multi-axis joint robot 3 to the original point of the equipment, and closing the equipment;
(8) And taking out the part after the part is cooled to room temperature.
As described above, the present invention can be preferably realized.
The embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principles of the invention should be made and equivalents should be construed as falling within the scope of the invention.
Claims (6)
1. A composite laser device for a directional energy deposition apparatus, comprising a laser, and a laser processing head (4) connected thereto, characterized in that:
the laser comprises a first laser (1) and a second laser (2);
the laser processing head (4) comprises: a first beam expansion collimating lens (21) and a second beam expansion collimating lens (15); a light converging lens (20), a total reflecting lens (16), a telescopic lens (17), a focusing lens (18) and a nozzle (19);
the first laser (1) sequentially transmits laser of the first laser (1) to the first beam expanding and collimating lens (21), the beam combining lens (20) and the focusing lens (18) through the first optical fiber (13), and then the laser is emitted from a light emitting hole (33) of the nozzle (19) and focused on a processing plane to be used as a first light spot; the diameter of the first light spot is 3-5mm;
the second laser (2) sequentially transmits laser light of the second laser (2) to the second beam expanding and collimating lens (15) and the total reflecting mirror (16) through the second optical fiber (14), the total reflecting mirror (16) reflects the laser light to the light combining lens (20), the light combining lens (20) reflects the laser light to the focusing lens (18), and finally the laser light is emitted from the light emitting hole (33) of the nozzle (19) and focused on a processing plane to be used as a second light spot; the diameter of the second light spot is 3-5mm;
the first light spot is an infrared light spot;
the second light spot is a blue-green light spot;
the focusing lens (18) is a telescopic focusing lens;
the infrared light spots and the blue-green light spots are focused by a focusing lens (18), and are emitted through a light emitting hole (33) of a nozzle (19) to form a composite laser light spot on a processing plane; the diameter of the composite laser spot is 3-5mm;
the beam expanding and collimating lens (15) and the first beam expanding and collimating lens (21) are used for expanding the laser beam and integrating the laser beam into parallel light; the total reflection mirror (16) and the mirror surface of the light combining mirror (20) are parallel to each other, and the parallel angle is adjustable;
the wavelength of the first laser (1) is 900 nm-1090 nm, and the beam quality M 2 Less than 1.1;
the wavelength of the second laser (2) is 450-560 nm, and the beam quality M 2 Less than 1.1.
2. The composite laser device for a directional energy deposition apparatus of claim 1, wherein:
the first laser (1) is an infrared fiber laser; the second laser (2) is a blue-green semiconductor laser.
3. The composite laser device for a directional energy deposition apparatus of claim 1, wherein:
the light converging lens (20) is an infrared light transmitting lens for reflecting blue and green light.
4. The composite laser device for a directional energy deposition apparatus of claim 1, wherein: the directional energy deposition apparatus comprises a multi-axis articulated robot (3) to which the laser processing head (4) is fixed.
5. The composite laser device for a directional energy deposition apparatus of claim 4, wherein: the multi-axis joint robot (3) is a six-axis joint robot.
6. A composite laser forming method, characterized in that it is realized by the composite laser device according to any one of claims 1 to 5, comprising the steps of:
step one, a step one; a first light spot forming step:
the first laser (1) sequentially transmits laser of the first laser (1) to a first beam expanding and collimating lens (21), a beam combining lens (20) and a focusing lens (18) through a first optical fiber (13), and then the laser is emitted from a light emitting hole (33) of a nozzle (19) and focused into a first light spot on a processing plane;
step two, a step two is carried out; a second light spot forming step:
the second laser (2) sequentially transmits laser of the second laser (2) to the second beam expanding collimating lens (15) and the total reflecting mirror (16) through the second optical fiber (14), the total reflecting mirror (16) reflects the laser by 90 degrees to the light combining lens (20), the light combining lens (20) reflects the laser by 90 degrees to the focusing lens (18), and finally the laser is emitted from the light emitting hole (33) of the nozzle (19) and focused into a second light spot on the processing plane;
step three, a step of performing; and a composite laser spot forming step:
an infrared light beam generated by the first laser (1) and a blue-green light beam generated by the second laser (2) enter a focusing lens (18) in parallel; the focusing lens (18) is adjusted to gradually intersect the infrared beam and the blue-green beam at a point, and finally, a composite laser spot containing infrared light and blue-green light is formed on the processing plane.
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| CN114457333A (en) * | 2022-04-14 | 2022-05-10 | 广东粤港澳大湾区硬科技创新研究院 | Double-beam composite laser cladding device and cladding method |
| CN114959688B (en) * | 2022-05-31 | 2023-09-08 | 中机新材料研究院(郑州)有限公司 | Composite ultra-high-speed laser cladding device and cladding method thereof |
| CN115534277A (en) * | 2022-09-27 | 2022-12-30 | 江苏新美星包装机械股份有限公司 | Heating device and heating method for plastic preforms |
| CN115570267B (en) * | 2022-09-30 | 2024-04-19 | 华南理工大学 | A blue laser-infrared laser composite welding device and method based on powder material |
| CN116160023B (en) * | 2023-02-20 | 2024-12-17 | 广东省科学院新材料研究所 | System for laser additive manufacturing and additive manufacturing method |
| CN117047261B (en) * | 2023-09-04 | 2025-06-27 | 深圳公大激光有限公司 | Annular spot laser processing system |
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