CN114713855A - Selective laser melting forming method and device with movable scanning galvanometer - Google Patents
Selective laser melting forming method and device with movable scanning galvanometer Download PDFInfo
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- CN114713855A CN114713855A CN202210378620.3A CN202210378620A CN114713855A CN 114713855 A CN114713855 A CN 114713855A CN 202210378620 A CN202210378620 A CN 202210378620A CN 114713855 A CN114713855 A CN 114713855A
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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
- B22F12/46—Radiation means with translatory movement
- B22F12/47—Radiation means with translatory movement parallel to the deposition plane
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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
- B22F10/70—Recycling
- B22F10/73—Recycling of 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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/70—Recycling
- B22F10/77—Recycling of gas
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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
- B22F12/22—Driving means
- B22F12/224—Driving means for motion along a direction within the plane of a layer
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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
- B22F12/50—Means for feeding of material, e.g. heads
- B22F12/52—Hoppers
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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
- B22F12/60—Planarisation devices; Compression devices
- B22F12/67—Blades
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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
- B22F12/70—Gas flow means
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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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- 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
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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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- Laser Beam Processing (AREA)
Abstract
The invention discloses a method and a device for selective laser melting forming with a movable scanning galvanometer, belonging to the technical field of selective laser melting, wherein the forming device comprises a laser beam transmission system, a control system, a power system, a forming system, a metal powder conveying and recycling system, a gas circulation system and a motion system, and the radiation surface which can be formed by a single scanning galvanometer can be greatly expanded by integrating the scanning galvanometer, a blowing system and a powder spreading system on a bracket which can freely slide in the direction of X, Y, thereby avoiding the problem of greatly increasing the equipment cost caused by splicing multiple scanning galvanometers; the single scanning galvanometer is used for processing, so that the problem of reduced forming quality of a formed part in a splicing area caused by inaccurate splicing of multiple scanning galvanometers can be avoided; the mouth of will blowing and the inlet scoop integration are on the support, can shorten the distance between mouth of blowing, the inlet scoop, reduce the degree of difficulty of cleaing away produced smoke and dust in the course of working, are favorable to further promoting the quality of formed part.
Description
Technical Field
The invention relates to the technical field of selective laser melting, in particular to a selective laser melting forming method and device with a movable scanning galvanometer.
Background
The selective laser melting technology is the most common metal additive manufacturing technology, and is based on the principle of discrete-accumulation, a laser beam is controlled by a computer to selectively melt pre-laid powder, the molten metal powder forms a molten pool, the molten metal forms a melting point after being rapidly cooled and solidified, and then a workpiece is formed by gradually accumulating points, lines, surfaces and bodies. Compared with the traditional processing technology, the selective laser melting technology has the advantages of high forming freedom degree, high material utilization rate, short production period and the like, and is widely applied to the fields of aviation, aerospace, energy, medical treatment and the like.
However, selective laser melting techniques also have a number of deficiencies. Due to the limitation of the scanning galvanometer to form the spoke, when a single scanning galvanometer is used, the forming size is generally limited to 300mm X300 mm, and the mode that the formed spoke is spliced only by a plurality of scanning galvanometers is required to be enlarged, and a new problem is introduced by using the mode. On one hand, multiple sets of lasers and beam expanders need to be arranged for splicing multiple scanning galvanometers, so that the equipment cost is greatly increased; on the other hand, the method has higher requirements on the scanning galvanometer splicing technology, and the quality of the formed part at the splicing position is reduced due to inaccurate splicing. Moreover, the conventional equipment usually places the air blowing opening and the air suction opening at two sides of the forming platform, and after the forming spoke surface is enlarged, the distance between the air blowing opening and the air suction opening is increased, so that the difficulty of removing the smoke dust generated in the forming process by air flow is greatly increased. Therefore, solving the problems of the conventional selective laser melting equipment becomes an urgent problem to be solved in the actual production process.
Disclosure of Invention
The invention mainly aims to provide a method and a device for selective laser melting forming with a movable scanning galvanometer, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
a laser melting and forming method and device with movable scanning galvanometer for selective area comprises a lower casing, a forming platform is arranged in the lower shell of the device, a forming platform transmission device is also arranged at the bottom of the forming platform, an upper device shell is arranged above the lower device shell, a forming bin is arranged inside the upper device shell, the top of the molding bin is provided with a group of motion systems consisting of X-direction guide rails and Y-direction guide rails, the motion system is positioned right above the forming platform, a bracket is arranged below the motion system, the outer side of the bracket is provided with a powder supply barrel, the inner side of the bracket is provided with a scanning galvanometer, the scanning galvanometer is externally connected with a laser, the laser beam generating device comprises a support, a laser beam generating device, a laser beam shaping platform, a circulating fan, a laser beam shaping platform, a circulating fan, a laser beam shaping platform, a suction opening and a circulating fan, wherein the suction opening and a circulating fan are respectively arranged at the bottom of the support, and externally connected to an external circulating fan.
Preferably, the forming platform transmission device controls the lifting of the forming platform, the forming cylinder is surrounded around the forming platform, and the powder collecting barrel is arranged inside the forming cylinder.
Preferably, the moving system top that X direction guide rail and Y direction guide rail are constituteed is provided with a powder bin, powder bin and confession powder bucket intercommunication, the bottom opening part that supplies the powder bucket all is provided with the runner of a control ejection of compact.
Preferably, the bottom of the support is also provided with a scraper below the air suction opening or the air blowing opening, and the scraper is arranged in parallel with the forming platform.
A scanning galvanometer movable selective laser melting forming method mainly comprises the following steps:
s1, stopping the bracket below the powder storage box, and allowing the metal powder to fall into the powder supply barrel from the powder storage box;
s2, moving the support in a X, Y plane formed by an X-direction guide rail and a Y-direction guide rail above the forming platform, in the moving process, enabling metal powder in the powder barrel to fall on the forming platform and be evenly paved by a scraper, meanwhile, generating a laser beam by a laser beam transmission system formed by a scanning galvanometer and a laser, melting the metal powder in a designated area on the forming platform under the control of an equipment control system, and descending the forming platform to a designated height through a forming platform transmission device after the laser beam melts all areas required in the current machining layer;
s3, returning the bracket to the lower part of the powder storage box again, and adding metal powder;
s4, repeating the three steps, finishing the machining in a layer-by-layer accumulation mode, and finally obtaining a formed workpiece;
preferably, in the additive manufacturing and forming process of S2-S3, protective gas such as argon or nitrogen is filled into the forming bin to prevent the workpiece from being oxidized at high temperature.
Compared with the prior art, the invention has the following beneficial effects:
1. by integrating the scanning galvanometer, the blowing system and the powder spreading system on a bracket which can freely slide in the direction of X, Y, the formable spoke surface of a single scanning galvanometer can be greatly expanded, and the problem of greatly increased equipment cost caused by splicing multiple scanning galvanometers is avoided;
2. the single scanning galvanometer is used for processing, so that the problem of the forming quality reduction of a formed part in a splicing area caused by inaccurate splicing of a plurality of scanning galvanometers can be avoided;
3. will blow mouthful and inlet scoop integration on the support, can shorten the distance between mouth of blowing, the inlet scoop, reduce the degree of difficulty of cleaing away produced smoke and dust in the course of working, be favorable to further promoting the quality of formed part.
Drawings
FIG. 1 is a front view of an overall structure of a selective laser melting and forming device with a movable scanning galvanometer according to the present invention;
FIG. 2 is a side view of the whole structure of a selective laser melting and forming device with a movable scanning galvanometer according to the present invention;
fig. 3 is a schematic view of a moving path of a support of a scanning galvanometer-movable selective laser melting forming device of the invention.
In the figure: 1. a powder collecting barrel; 2. a lower housing of the apparatus; 3. an upper housing of the device; 4. a molding bin; 5. an X-direction guide rail; 6. a Y-direction guide rail; 7. a powder supply barrel; 8. an air suction opening; 9. a rotating wheel; 10. a metal powder; 11. forming a workpiece; 12. a forming platform; 13. a forming cylinder; 14. a forming platform transmission device; 15. an air blowing port; 16. a scraper; 17. a powder storage bin; 18. scanning a galvanometer; 19. a laser beam; 20. a support; 21. a laser; 22. and a circulating fan.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The invention provides a movable selective laser melting forming device of a scanning galvanometer, which comprises a laser beam transmission system, a control system, an electric power system, a forming system, a metal powder conveying and recycling system, a gas circulation system and a motion system.
The laser beam transmission system comprises a laser 21 and a scanning galvanometer 18, and is used for generating laser beams and controlling deflection, the scanning galvanometer 18 is arranged on the inner side of a bracket 20, the scanning galvanometer 18 is externally connected with the laser 21, and downward laser beams 19 are generated below the scanning galvanometer 18 and directly face the forming platform 12;
the control system is used for controlling the coordinated operation of all working units of the selective laser melting equipment, and the power system provides electric energy for the equipment.
The forming system mainly comprises a forming platform 12, the forming platform 12 is arranged in the lower shell 2 of the device, a forming platform transmission device 14 is further arranged at the bottom of the forming platform 12, the forming platform transmission device 14 controls the lifting of the forming platform 12, and the forming cylinder 13 is surrounded around the forming platform 12.
Powder conveying system includes powder storage box 17, supplies powder bucket 7, runner 9 and scraper 16 for metal powder's transport and spreading, the moving system top that powder storage box 17X direction guide rail 5 and Y direction guide rail 6 are constituteed supplies powder bucket 7 to follow support 20, and can communicate with powder storage box 17, runner 9 then sets up at the bottom opening part that supplies powder bucket 7, and scraper 16 then is located the rear position of runner 9.
The powder recovery system comprises a powder collecting pipeline and a powder collecting barrel 1 which are connected and used for recovering redundant metal powder, wherein the powder collecting barrel 1 is arranged in the forming cylinder 13 and is lower than the forming platform 12.
The gas circulation system comprises a circulating fan 22, a gas transmission pipeline, a suction opening 8 and a blowing opening 15, and is used for generating gas flow and blowing away smoke dust generated in the process of melting metal powder by laser, and the suction opening 8 and the blowing opening 15 are arranged at the bottom of the bracket 20 and are connected to the circulating fan 22 through the gas transmission pipeline.
The moving system comprises an X-direction guide rail 5, a Y-direction guide rail 6 and a bracket 20 arranged on the X-direction guide rail and the Y-direction guide rail, and is used for driving the scanning galvanometer 18, the powder supply barrel 7, the air suction opening 8, the air blowing opening 15, the scraper 16 and other structures to move on the X, Y plane.
The invention also provides a selective laser melting forming method, which comprises the following steps:
s1, the bracket 20 stops below the powder storage box 17, and the metal powder 10 falls into the powder supply barrel 7 from the powder storage box 17;
s2, moving the support 20 in a X, Y plane formed by the X-direction guide rail 5 and the Y-direction guide rail 6 above the forming platform 12, in the moving process, the metal powder 10 in the powder supply barrel 7 falls on the forming platform 12 and is uniformly paved by the scraper 16, meanwhile, a laser beam transmission system formed by the scanning galvanometer 18 and the laser 21 generates a laser beam 19, the metal powder 10 in a designated area on the forming platform 12 is melted under the control of an equipment control system, and after the laser beam 19 melts all areas required in the current machining layer, the forming platform 12 descends to a designated height through the forming platform transmission device 14;
s3, returning the bracket 20 to the lower part of the powder storage tank 17 again, and adding the metal powder 10;
s4, repeating the three steps, finishing the processing in a layer-by-layer accumulation mode, and finally obtaining a formed workpiece 11;
it should be noted that during the additive manufacturing and molding processes from S2 to S3, the inside of the molding chamber 4 is filled with protective gas such as argon or nitrogen to prevent the workpiece from being oxidized at high temperature.
In practical operation, the scanning galvanometer movable selective laser melting forming device adopts a fiber laser for the scanning galvanometer 18, and In718 alloy powder is adopted for the metal powder 10;
as shown in fig. 1-2, before the selective laser melting forming, argon gas is firstly injected into the forming bin 4, so that the oxygen content in the forming bin 4 is reduced to be less than 0.1%; the circulating fan 22 is started, the air blowing port 15 on the bracket 20 starts to blow air, and the air speed is a preset value.
When the selective laser melting forming is started, the bracket 20 stops below the powder storage tank 17, the In718 alloy powder In the powder storage tank 17 falls into the powder supply barrel 7 under the control of the control system, and the powder falling is stopped after the In718 alloy powder falls into the preset powder amount; the support 20 is then moved along a predetermined path onto the forming table 12.
As shown in fig. 3, when the bracket 20 is close to the left edge of the forming platform, the rotating wheel 9 at the bottom of the powder supply barrel 7 located at the front side of the movement direction of the bracket 20 starts to rotate, so that the metal powder 10 in the powder supply barrel 7 falls onto the forming platform 12, and the metal powder 10 is spread by the scraper 16 at the rear of the rotating wheel 9; in the process that the bracket 20 moves from the left side to the right side along the arrow direction in the figure, when the bracket 20 moves to the area needing laser processing, the laser beam 19 melts the appointed area under the control of the scanning galvanometer 18; after the support 20 completely passes through the forming platform 12, the redundant metal powder 10 is pushed into the powder collecting barrel 1 by the scraper 16, and the rotating wheel 9 stops rotating at the moment; the carriage 20 is then moved along the Y-direction guide 6 to the right-side broken-line carriage position and starts to move from the right side to the left side of the shaping table 12; at this time, the rotating wheel 9 at the bottom of the powder supply barrel 7 at the front side of the moving direction of the bracket 20 starts to rotate, so that the metal powder 10 in the powder supply barrel 7 falls onto the forming platform 12, the scraper 16 at the rear of the rotating wheel 9 is used for paving and flattening the metal powder 10 again, and when the bracket 20 moves to an area needing laser processing, the laser beam 19 melts the designated area under the control of the scanning galvanometer 18; after the support 20 moves to the right side of the forming platform 12, the redundant metal powder 10 is pushed into the powder receiving barrel 1 by the scraper 16, the rotating wheel 9 stops rotating, and the forming platform 12 is controlled to descend by a designated height through the forming platform transmission device 14; and the bracket 20 returns to the lower part of the powder storage tank 17 again for powder addition, and the steps are continued to finish the processing after the powder addition is finished.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a scanning galvanometer movable selective laser melting forming device which characterized in that: comprises an equipment lower part shell (2), a forming platform (12) is arranged in the equipment lower part shell (2), a forming platform transmission device (14) is further arranged at the bottom of the forming platform (12), an equipment upper part shell (3) is arranged above the equipment lower part shell (2), a forming bin (4) is arranged in the equipment upper part shell (3), a group of motion system consisting of an X-direction guide rail (5) and a Y-direction guide rail (6) is arranged at the top of the forming bin (4), the motion system is positioned right above the forming platform (12), a support (20) is arranged below the motion system, a powder supply barrel (7) is arranged at the outer side of the support (20), a scanning galvanometer (18) is arranged at the inner side, a laser (21) is externally connected with the scanning galvanometer (18), and a downward laser beam (19) is generated below and is directly opposite to the forming platform (12), the bottom of the support (20) is also respectively provided with an air suction opening (8) and an air blowing opening (15), and the air suction opening and the air blowing opening are externally connected to an external circulating fan (22).
2. The selective laser melting and forming device with the movable scanning galvanometer as claimed in claim 1, wherein: the forming platform transmission device (14) controls the lifting of the forming platform (12), the forming cylinder (13) is surrounded around the forming platform (12), and the powder collecting barrel (1) is arranged inside the forming cylinder (13).
3. The selective laser melting and forming device with the movable scanning galvanometer as claimed in claim 1, wherein: the moving system top that X direction guide rail (5) and Y direction guide rail (6) are constituteed is provided with a powder bin (17), powder bin (17) and confession powder bucket (7) intercommunication, the bottom opening part that supplies powder bucket (7) all is provided with runner (9) of a control ejection of compact.
4. The selective laser melting and forming device with the movable scanning galvanometer as claimed in claim 1, wherein: the bottom of the support (20) is also provided with a scraper (16) below the air suction opening (8) or the air blowing opening (15), and the scraper (16) is arranged in parallel with the forming platform (12).
5. A scanning galvanometer movable selective laser melting forming method is characterized in that: the method mainly comprises the following steps:
s1, the bracket (20) stops below the powder storage box (17), and the metal powder (10) falls into the powder supply barrel (7) from the powder storage box (17);
s2, moving a support (20) in a X, Y plane formed by an X-direction guide rail (5) and a Y-direction guide rail (6) above a forming platform (12), wherein in the moving process, metal powder (10) in a powder supply barrel (7) falls on the forming platform (12) and is uniformly paved by a scraper (16), meanwhile, a laser beam transmission system formed by a scanning galvanometer (18) and a laser (21) generates a laser beam (19), the metal powder (10) in a designated area on the forming platform (12) is melted under the control of an equipment control system, and after the laser beam (19) melts all areas required in the current machining layer, the forming platform (12) descends to a designated height through a forming platform transmission device (14);
s3, returning the bracket (20) to the position below the powder storage tank (17) again, and adding the metal powder (10);
and S4, repeating the three steps, finishing the machining in a layer-by-layer stacking mode, and finally obtaining the formed workpiece (11).
6. The selective laser melting forming method of claim 5, wherein: in the additive manufacturing and forming process from S2 to S3, protective gas such as argon or nitrogen is filled into the forming bin (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210378620.3A CN114713855A (en) | 2022-04-12 | 2022-04-12 | Selective laser melting forming method and device with movable scanning galvanometer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210378620.3A CN114713855A (en) | 2022-04-12 | 2022-04-12 | Selective laser melting forming method and device with movable scanning galvanometer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115156560A (en) * | 2022-09-06 | 2022-10-11 | 杭州爱新凯科技有限公司 | Super large breadth 3D printing apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115156560A (en) * | 2022-09-06 | 2022-10-11 | 杭州爱新凯科技有限公司 | Super large breadth 3D printing apparatus |
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