CN110039047A - Metal powder laser melts increasing material manufacturing device and its manufacturing process - Google Patents
Metal powder laser melts increasing material manufacturing device and its manufacturing process Download PDFInfo
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- CN110039047A CN110039047A CN201810032730.8A CN201810032730A CN110039047A CN 110039047 A CN110039047 A CN 110039047A CN 201810032730 A CN201810032730 A CN 201810032730A CN 110039047 A CN110039047 A CN 110039047A
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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
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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
-
- 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
-
- 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
- B22F10/30—Process control
- B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
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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
- B22F12/45—Two or more
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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
It is low using central energy Density Distribution height, ambient energy density that the invention discloses a kind of, and the metal powder laser of section envelope close to circular laser beam melts increasing material manufacturing device and its manufacturing process；Described device expands component, focus pack, optical path synthesis component, temperature adjustment light source generator and temperature adjustment light source including forming light source generator, forming light source and expands component；Forming and the compound hot spot of temperature adjustment of annular spread are obtained by the adjustment of optical path, are conducive to reduce thermal stress, crack defect is inhibited to generate；The present invention is suitable for the changeable occasion of scan path curvature, and using Defocusing design, radius is adjustable, and processing can be deviated with temperature adjustment region, preheats, the scope of application of slow cooling is improved；The method can be used for the increasing material manufacturing occasion with atmosphere protection, and the control of processing environment parameter is more stable.
Description
Technical field
The invention belongs to material increasing field, it is related to increasing and decreasing material composite manufacturing more particularly to metal powder laser is molten
Melt increasing material manufacturing device and its manufacturing process.
Background technique
It is one of important method of increasing material manufacturing that metal powder laser, which melts increasing material manufacturing, is passed through using metal powder material as raw material
The forming process of workpiece is completed in the excitation of laser；Due to laser energy density height, quickly heats and be quickly cooled down in manufacturing process
Rapidoprint can be made to generate excessive internal stress, Yi Yinqi drip molding cracking；As limitation laser gain material manufacturing technology industrialization
The obstacle that one kind of application must overcome.
To solve the above-mentioned problems, numerous scholars have carried out numerous studies, the temperature being based primarily upon in control forming process
Field and stress field reduce the internal stress generated in forming process, and crackle is inhibited to generate；In addition, also by optimization laser gain material
The method that fabrication process parameters inhibit crackle to generate and the method for inhibiting crackle to generate by addition enhancing, toughening element.
Wherein, temperature gradient in forming process is reduced by substrate preheating and cladding layer slow cooling, reducing thermal stress is most often
Method: Bian Hongyou etc. is in technical paper " influence that substrate preheating repairs GH4169 alloy property to laser deposition ", [China
Laser .2016 (7): 92-97.] in a text the study found that when substrate preheating is to 300 DEG C, the residual stress of GH4169 alloy sample
There is apparent reduction；Matrix, which integrally heats, has certain effect to reduction thermal stress tool, but increasing material manufacturing is layer-by-layer stack shaping,
With the increase of the deposition number of plies, preheating temperature will be caused uneven；In addition, preheating device laying in increasing material manufacturing equipment,
It is integrated that there are also problems.
In order to avoid matrix integrally heats bring adverse effect, method first is that using mobile with processing laser synchronization
Heat source realizes local preheating's slow cooling, as laser beam is divided into machining beams in Chinese patent specification the 201410480190.1st
Oval uniform beam is first exported, machining beams is exported afterwards, starts to swash before carrying out laser melting coating with oval uniform beam
When light cladding, machining beams are located within the scope of oval uniform beam, and equidirectional movement, laser cladding process terminate the two at the same speed
When, oval uniform beam lags behind machining beams closing, but the implementation method of this method is not mentioned in patent.
Chinese patent specification the 201110352257.Xth carries out laser melting coating using two lasers, wherein same swash
Laser is divided by one in front and one in back two beam laser using beam splitter in light device, wherein preceding laser is used for substrate preheating, rear laser is used for
Cladding slow cooling, this method can effectively eliminate the residualinternal stress in cladding layer, inhibit crackle to generate, but this method can only be straight
In line cladding process effectively, the laser melting coating with corner structure can not be applicable in, poor universality.
Summary of the invention
In order to solve the problems, such as above-mentioned substrate preheating or/and cladding layer slow cooling method, the invention discloses one kind
Low using central energy Density Distribution height, ambient energy density, the metal powder of section envelope close to circular laser beam swashs
Light melts increasing material manufacturing device and its manufacturing process.
Metal powder laser disclosed by the invention melts increasing material manufacturing device, including forming light source generator, forming light source
Expand component, focus pack, it is characterised in that: described device further includes optical path synthesis component, temperature adjustment light source generator, temperature adjustment light
Source expands component；The forming light source generator successively expands component, institute with the forming light source along the optical path direction of forming light
State optical path synthesis component, the focus pack is fixedly connected；The temperature adjustment light source generator along temperature adjustment light optical path direction successively
Component is expanded with the temperature adjustment light source, the optical path synthesizes component and is fixedly connected.
The present invention using at least 2 groups of light sources to component shaping position provide energy: the light source via different focal length expansion
Tread assembly carries out expanding processing, it is characterised in that: the forming light source, which expands component and expands component with the temperature adjustment light source, to be had
Different focal length, it is further characterized in that the forming light source expands component emergent light optical path diameter of section less than the temperature adjustment light source
Expand component emergent light optical path diameter of section；So that workpiece position forms the preheating of annular spread, slow cooling region, keep simultaneously
One energy density high cladding forming region.
The present invention is handled using the synthesis that optical path synthesis component realizes shaped beam and temperature adjustment light beam: it is characterized by:
The optical path synthesis component includes reverse beam splitting arrangement；The emergent light that the forming light source expands component is filled in the reverse beam splitting
It sets and is transmitted through；The emergent light that the temperature adjustment light source expands component reflected on the reverse beam splitting arrangement after with the forming
Light source expands the emergent light symport of component.
Since present invention employs the focus pack of focus adjustable, each section radius of the ring-shaped light spot of described device is equal
It is adjustable, and then increases the scope of application of described device；Specifically, it is characterised in that: the focus pack according to
Forming technology needs to adjust focal length, so that it is determined that the size of forming and temperature adjustment hot spot.
Present invention employs the controls that plated film lens realize optical path: it is characterized by: point of optical path synthesis component
Bundle device has carried out coating film treatment towards workbench side, and the light beam that the temperature adjustment light source expands component output is filled in the beam splitting
It sets coated surface and sends total reflection.
In addition, described device has carried out defocus processing in order to improve the radius of temperature adjustment and shaped region: it is characterized by:
The emergent light of the forming light source generator and the temperature adjustment light source generator is in out-of-focus appearance in workpiece scan position.
In order to be further improved thermoregulation effect, offset setting is carried out to annular beam: it is characterized by: the temperature adjustment light
Source generator and the temperature adjustment light source expand component can deflect specified angle simultaneously, so that the forming light source expands component
The circumscribed circle center of circle of emergent light optical path cross section envelope and the temperature adjustment light source expand component emergent light optical path cross section envelope
Circumscribed circle circle center line connecting is conllinear with the scanning direction of described device increasing material manufacturing and deviates corresponding distance；It thus can basis
The requirement of technique further adjusts preheating and slow cooling time and range.
The present invention is based on same Creative Designs, while also disclosing the metal powder laser melting increasing material manufacturing device
Manufacturing process, it is characterised in that include the following steps:
A) peripheral hardware prepares: according to the needs of laser melting increasing material manufacturing, checking and ensures that the metal powder laser melting increases material
The molding condition of manufacturing device has been provided with, including but not limited to the inspection to raw material, power, atmosphere protection, recyclable device, inspection
It looks into and enters standby mode by rear, substrate is cleared up into conjunction rule and is placed on the workbench of described device.
B) host reset: on the basis of peripheral hardware is ready, adjustment includes control parts of motion, raw material supply component
Each component of host inside reaches preset operating position.
C) atmosphere protection: according to process requirement, starting the atmosphere protection system of described device, and operating area is made to be in lazy
Property gas protection status, the inert gas includes the stable gaseous material of the chemical characteristics such as argon gas, and the inert gas is deposited
It include but is not limited to jet-impingement in form, retention form exists in airtight cavity.
D) substrate is processed: starting temperature adjustment light source generator first so that workpiece substrate reaches predetermined work temperature, then opens
Dynamic forming light source generator and feedstock transportation component, start increasing material manufacturing process, each execution including control parts of motion
Mechanism adjusts the relative position of increasing material manufacturing driver unit and substrate according to the technological requirements, realizes the scanning of initiation layer, and then complete
At the processing of workpiece first layer substrate.
E) scanning forming: requiring according to increasing material manufacturing technique, and adjusting host and external components ensures that position is scanned in executing agency
It sets the processing conditions including temperature and meets preset parameter, and driven according to preset scan path by position control component
Increasing material manufacturing executing agency demixing scan processes remaining each layer workpiece substrate.
F) subsequent heat preservation: after the scanning machining forming for completing each layer of workpiece, being first shut off forming light source generator, according to
Technique requires to turn off temperature adjustment light source generator after being kept for a period of time specified.
G) data save: after workpiece surface temperature is down to the temperature of technique requirement, closing atmosphere protection system, storage
Necessary technique, process data reset and close host and peripheral hardware, terminate this forming process.
Technique effect and advantage of the invention is:
A) present invention ensures that described device forms a forming and tune in workpiece surface using the different generating device of laser of power
The compound hot spot of temperature realizes high distribution, the low distribution of surrounding laser power density of central area laser power density.
B) present invention carries out increasing material manufacturing using close to circular laser beam, and peripheral annular temperature adjustment region can be effective
The temperature gradient in forming process is reduced, reduces thermal stress, so that crack defect be inhibited to generate.
C) present invention increasing material manufacturing scan path not only along straight-line displacement when, equally temperature can be kept to adjust
Function, insensitive to the variation of scan path curvature, the control of processing environment parameter is more stable.
D) ring-shaped light spot that constructs of the present invention is in the defocus region of light beam on workpiece substrate, and the annular region
Each radius is adjustable, and central area can deviate, and preheats, the scope of application of slow cooling is improved.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings, but embodiment described herein is only to explain this
Invention, implementation of the invention are not limited to following examples.
Fig. 1 is the composed structure schematic diagram that metal powder laser of the present invention melts increasing material manufacturing device preferred embodiment.
Fig. 2 is the forming light spot energy density point that metal powder laser of the present invention melts increasing material manufacturing device preferred embodiment
Cloth schematic diagram.
Fig. 3 is the scanning forming schematic diagram that metal powder laser of the present invention melts increasing material manufacturing device preferred embodiment.
Fig. 4 shows before the forming hot spot for metal powder laser of the present invention melting increasing material manufacturing device preferred embodiment to offset
It is intended to.
Fig. 5 shows after the forming hot spot for metal powder laser of the present invention melting increasing material manufacturing device preferred embodiment to offset
It is intended to.
Fig. 6 is the increasing material manufacturing flow chart that metal powder laser of the present invention melts increasing material manufacturing device preferred embodiment.
In figure, 1--- shapes light source generator, 122--- shaped beam.
2--- forming light source expands component, 223--- expand after shaped beam.
3--- optical path synthesizes component, and 326--- synthesizes light beam.
4--- temperature adjustment light source generator, 425--- temperature adjustment light beam.
5--- temperature adjustment light source expands component, 523--- expand after temperature adjustment light beam.
6--- focus pack, shaped beam before 627--- pan feeding.
7--- feedstock transportation component, 701--- raw material storage unit, light-powder combined beam before 728--- forming.
8--- workpiece substrate, 801--- shape hot spot, 802--- annular temperature adjustment hot spot, and 888--- shapes scanning direction.
9-are increasing one layer of workpiece in material forming.
Specific embodiment
As shown in Figure 1, the preferred embodiment of metal powder laser melting increasing material manufacturing device of the present invention, including forming light source
Generator (1), forming light source expand component (2), focus pack (6), optical path synthesis component (3), temperature adjustment light source generator (4),
Temperature adjustment light source expands component (5)；It is described forming light source generator (1) along forming light optical path direction successively with the forming light source
Expand component (2), the optical path synthesizes component (3), the focus pack (6) is fixedly connected；The temperature adjustment light source generator (4)
Along the optical path direction of temperature adjustment light successively expands component (5) with the temperature adjustment light source, the optical path synthesizes component (3) and is fixedly connected.
It expands component (5) as shown in Figure 1, forming light source expands component (2) and temperature adjustment light source there is different focal lengths, it is described
Forming light source expands component (2) emergent light optical path diameter of section and expands component (5) emergent light optical path section less than the temperature adjustment light source
Face diameter.
As shown in Figure 1, optical path synthesis component (3) includes reverse beam splitting arrangement；Forming light source expands the emergent light of component (2)
It is transmitted through on the reverse beam splitting arrangement；Temperature adjustment light source expands the emergent light of component (5) on the reverse beam splitting arrangement
The emergent light symport of component (2) is expanded after reflection with the forming light source.
As shown in Figure 1, focus pack (6) needs to adjust focal length according to forming technology, so that it is determined that forming and temperature adjustment light
The size of spot.
As shown in Figure 1, the beam splitting arrangement of optical path synthesis component (3) has carried out coating film treatment towards workbench side, it is described
The light beam that temperature adjustment light source expands component output is sent in the beam splitting arrangement coated surface to be totally reflected.
As shown in Figure 1, the emergent light of forming light source generator (1) and temperature adjustment light source generator (4) is in workpiece scan position
In out-of-focus appearance, hot spot as shown in Figure 2 is formd.
As shown in Fig. 1, Fig. 4 or Fig. 5, temperature adjustment light source generator (4) expands component (5) and can deflect simultaneously with temperature adjustment light source to be referred to
Fixed angle so that forming light source expand component (2) emergent light optical path cross section envelope the circumscribed circle center of circle and the temperature adjustment
Light source expands the circumscribed circle circle center line connecting of component (5) emergent light optical path cross section envelope and the scanning side of described device increasing material manufacturing
To conllinear and deviate corresponding distance.
As shown in fig. 6, the manufacturing process of metal powder laser melting increasing material manufacturing device of the present invention, it is characterised in that including
Following steps:
A) peripheral hardware prepares: according to the needs of laser melting increasing material manufacturing, checking and ensures that the metal powder laser melting increases material
The molding condition of manufacturing device has been provided with, including but not limited to the inspection to raw material, power, atmosphere protection, recyclable device, inspection
It looks into and enters standby mode by rear, substrate is cleared up into conjunction rule and is placed on the workbench of described device.
B) host reset: on the basis of peripheral hardware is ready, adjustment includes control parts of motion, raw material supply component
Each component of host inside reaches preset operating position.
C) atmosphere protection: according to process requirement, starting the atmosphere protection system of described device, and operating area is made to be in lazy
Property gas protection status, the inert gas includes the stable gaseous material of the chemical characteristics such as argon gas, and the inert gas is deposited
It include but is not limited to jet-impingement in form, retention form exists in airtight cavity.
D) substrate is processed: starting temperature adjustment light source generator first so that workpiece substrate reaches predetermined work temperature, then opens
Dynamic forming light source generator and feedstock transportation component, start increasing material manufacturing process, each execution including control parts of motion
Mechanism adjusts the relative position of increasing material manufacturing driver unit and substrate according to the technological requirements, realizes the scanning of initiation layer, and then complete
At the processing of workpiece first layer substrate.
E) scanning forming: requiring according to increasing material manufacturing technique, and adjusting host and external components ensures that position is scanned in executing agency
It sets the processing conditions including temperature and meets preset parameter, and driven according to preset scan path by position control component
Increasing material manufacturing executing agency demixing scan processes remaining each layer workpiece substrate.
F) subsequent heat preservation: after the scanning machining forming for completing each layer of workpiece, being first shut off forming light source generator, according to
Technique requires to turn off temperature adjustment light source generator after being kept for a period of time specified.
G) data save: after workpiece surface temperature is down to the temperature of technique requirement, closing atmosphere protection system, storage
Necessary technique, process data reset and close host and peripheral hardware, terminate this forming process.
In another embodiment: 304L stainless steel being manufactured using laser gain material on stainless steel 304 L matrix, more than meeting
Further include following details outside steps characteristic:
A) peripheral hardware prepare: further include stainless steel 304 L matrix surface is polished, oil removal treatment；By stainless steel 304 L powder
Moisture removal is dried in a vacuum drying oven.
B) host reset: on the basis of peripheral hardware is ready, adjustment includes control parts of motion, raw material supply component
Each component of host inside reaches preset operating position；Wherein, the power for shaping light source generator (1) is 1300W, temperature adjustment light
The power of source generator (4) is 200W；
C) atmosphere protection: according to process requirement, start the atmosphere protection system of described device, operating area is made to be in indifferent gas
Body guard mode, the inert gas include the stable gaseous material of the chemical characteristics such as argon gas, the inert gas there are shapes
Formula includes but is not limited to jet-impingement, and retention form exists in airtight cavity；Wherein, argon gas shield gas flow rate is 15L/
min。
D) substrate is processed: starting temperature adjustment light source generator first so that workpiece substrate reaches predetermined work temperature, then opens
Dynamic forming light source generator and feedstock transportation component, start increasing material manufacturing process, each execution including control parts of motion
Mechanism adjusts the relative position of increasing material manufacturing driver unit and substrate according to the technological requirements, realizes the scanning of initiation layer, and then complete
At the processing of workpiece first layer substrate；Wherein, the diameter for shaping hot spot (801) is 2mm, and annular temperature adjustment hot spot (802) diameter is
5mm, scanning speed 6mm/s, powder sending quantity 8g/min, overlapping rate 40%.
E) scanning forming: requiring according to increasing material manufacturing technique, and adjusting host and external components ensures that position is scanned in executing agency
It sets the processing conditions including temperature and meets preset parameter, and driven according to preset scan path by position control component
Increasing material manufacturing executing agency demixing scan processes remaining each layer workpiece substrate；
F) subsequent heat preservation: after the scanning machining forming for completing each layer of workpiece, it is first shut off forming light source generator, according to technique
It is required that turning off temperature adjustment light source generator after being kept for a period of time specified；
G) data save: after workpiece surface temperature is down to the temperature of technique requirement, closing atmosphere protection system, storage is necessary
Technique, process data, reset and close host and peripheral hardware, terminate this forming process.
Fine and close and flawless 304L stainless steel cladding layer has been obtained after having carried out the processing of 4 single layers by the above process,
The present embodiment is merely preferred embodiments of the present invention, but scope of protection of the present invention is not limited thereto.
In another embodiment, the size of ring-shaped light spot is tested, specifically: using wavelength for the light of 1060nm
For fibre laser as forming light source generator (1), having obtained minimum light spot diameter is 0.4mm, the forming of peak power output 4KW
Hot spot；Temperature adjustment light source generator (4) peak power output 500w；Wherein, forming light source generator (1) is arranged vertically, temperature adjustment light
Source generator (4) is horizontally disposed；It includes a beam splitter Jing Guo coating film treatment that optical path, which synthesizes component (3), the forming light after expanding
Beam (223) is incident in uncoated one side and is transmitted through, the temperature adjustment light beam (523) after expanding, after the one side of plated film is incident
Reflection occurs and forms synthesis light beam (326), synthesis light beam (326) line focus component (6) convergence with shaped beam symport
Shaped beam (627) before formation pan feeding afterwards；Light-after shaped beam (627) and metal powder material converge before pan feeding before formation-forming
Powder combined beam (728) is simultaneously fallen to workpiece substrate (8)；Melt-shaping is being increased in material forming metal powder material on the matrix
One layer of workpiece (9)；After executing agency is scanned to next operating point, apparatus of the present invention will repeat above procedure until completing
Whole process.
After the last one scan position completes increasing material manufacturing, forming light source generator (1) is first shut off, predetermined when reaching
(4) late release of temperature adjustment light source generator ensure that process adjusts the full name of temperature in turn after temperature.Finally, peripheral hardware fills
It sets and host is out of service, process terminates.
Above-described embodiment is only for the purposes of illustrating the solution of the present invention, but the implementation method being not intended to restrict the invention,
All solutions for meeting intention of the present invention, fall within the scope of protection of the invention.
It is only one of preferred embodiments of the present invention in view of above-described embodiment, thus it also has following advantage:
A) forming and the compound hot spot of temperature adjustment are formd, realizes the high distribution of central area laser power density, surrounding swashs
The low distribution of optical power density.
B) increasing material manufacturing is carried out using close to circular laser beam, peripheral annular temperature adjustment region can be effectively reduced into
Temperature gradient during shape reduces thermal stress, so that crack defect be inhibited to generate.
C) in the scan path of increasing material manufacturing not only along straight-line displacement when, can equally keep temperature adjustment function, it is right
The variation of scan path curvature is insensitive, and the control of processing environment parameter is more stable.
D) ring-shaped light spot is in the defocus region of light beam on workpiece substrate, and each radius of the annular region is adjustable, in
Heart district domain can deviate, and preheat, the scope of application of slow cooling is improved.
Claims (8)
1. metal powder laser melt increasing material manufacturing device, including forming light source generator (1), forming light source expand component (2),
Focus pack (6), it is characterised in that: described device further includes optical path synthesis component (3), temperature adjustment light source generator (4), temperature adjustment light
Source expands component (5)；Forming light source generator (1) successively expands group with the forming light source along the optical path direction of forming light
Part (2), optical path synthesis component (3), the focus pack (6) are fixedly connected；The temperature adjustment light source generator (4) is along temperature adjustment
The optical path direction of light successively expands component (5) with the temperature adjustment light source, the optical path synthesizes component (3) and is fixedly connected.
2. device as described in claim 1, it is characterised in that: the forming light source expands component (2) and the temperature adjustment light source
Component (5) are expanded with different focal lengths, it is further characterized in that expand component (2) emergent light optical path section straight for the forming light source
Diameter is less than the temperature adjustment light source and expands component (5) emergent light optical path diameter of section.
3. device as described in claim 1, it is characterised in that: optical path synthesis component (3) includes reverse beam splitting arrangement；Institute
It states forming light source and expands the emergent light of component (2) and be transmitted through on the reverse beam splitting arrangement；The temperature adjustment light source expands group
The emergent light of part (5) reflected on the reverse beam splitting arrangement after with it is described forming light source expand component (2) emergent light it is in the same direction
Transmission.
4. device as described in claim 1, it is characterised in that: the focus pack (6) needs to adjust according to forming technology
Focal length, so that it is determined that the size of forming and temperature adjustment hot spot.
5. device as claimed in claim 3, it is characterised in that: the beam splitting arrangement direction work of optical path synthesis component (3)
Platform side has carried out coating film treatment, and the light beam that the temperature adjustment light source expands component output is sent in the beam splitting arrangement coated surface
Total reflection.
6. device as claimed in claim 4, it is characterised in that: the forming light source generator (1) and temperature adjustment light source hair
The emergent light of raw device (4) is in out-of-focus appearance in workpiece scan position.
7. device as described in claim 1, it is characterised in that: the temperature adjustment light source generator (4) and the temperature adjustment light source expand
Tread assembly (5) can deflect specified angle simultaneously, so that the forming light source expands the transversal bread of emergent light optical path of component (2)
The circumscribed circle center of circle of network and the temperature adjustment light source expand the circumscribed circle circle center line connecting of component (5) emergent light optical path cross section envelope with
The scanning direction of described device increasing material manufacturing is conllinear and deviates corresponding distance.
8. the manufacturing process of metal powder laser melting increasing material manufacturing device, it is characterised in that include the following steps:
A) peripheral hardware prepares: according to the needs of laser melting increasing material manufacturing, checking and ensures that the metal powder laser melting increases material
The molding condition of manufacturing device has been provided with, including but not limited to the inspection to raw material, power, atmosphere protection, recyclable device, inspection
It looks into and enters standby mode by rear, substrate is cleared up into conjunction rule and is placed on the workbench of described device；
B) it host reset: on the basis of peripheral hardware is ready, adjusts including control parts of motion, raw material supply component
Each component of host reach preset operating position；
C) atmosphere protection: according to process requirement, start the atmosphere protection system of described device, operating area is made to be in indifferent gas
Body guard mode, the inert gas include the stable gaseous material of the chemical characteristics such as argon gas, the inert gas there are shapes
Formula includes but is not limited to jet-impingement, and retention form exists in airtight cavity；
D) substrate is processed: starting temperature adjustment light source generator first is restarted into so that workpiece substrate reaches predetermined work temperature
Shape light source generator and feedstock transportation component start increasing material manufacturing process, each executing agency including control parts of motion
It realizes the scanning of initiation layer, and then completes work in the relative position for adjusting increasing material manufacturing driver unit and substrate according to the technological requirements
The processing of part first layer substrate；
E) scanning forming: requiring according to increasing material manufacturing technique, and adjusting host and external components ensures executing agency's scan position packet
It includes the processing conditions including temperature and meets preset parameter, and driven according to preset scan path by position control component and increase material
It manufactures executing agency's demixing scan and processes remaining each layer workpiece substrate；
F) subsequent heat preservation: after the scanning machining forming for completing each layer of workpiece, it is first shut off forming light source generator, according to technique
It is required that turning off temperature adjustment light source generator after being kept for a period of time specified；
G) data save: after workpiece surface temperature is down to the temperature of technique requirement, closing atmosphere protection system, storage is necessary
Technique, process data, reset and close host and peripheral hardware, terminate this forming process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810032730.8A CN110039047A (en) | 2018-01-13 | 2018-01-13 | Metal powder laser melts increasing material manufacturing device and its manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810032730.8A CN110039047A (en) | 2018-01-13 | 2018-01-13 | Metal powder laser melts increasing material manufacturing device and its manufacturing process |
Publications (1)
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