CN110280763A - Coaxial powder-feeding laser sintering device - Google Patents
Coaxial powder-feeding laser sintering device Download PDFInfo
- Publication number
- CN110280763A CN110280763A CN201910648209.1A CN201910648209A CN110280763A CN 110280763 A CN110280763 A CN 110280763A CN 201910648209 A CN201910648209 A CN 201910648209A CN 110280763 A CN110280763 A CN 110280763A
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- Prior art keywords
- powder
- laser
- present
- feeding
- coolant jacket
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000000149 argon plasma sintering Methods 0.000 title claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 71
- 239000002184 metal Substances 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 18
- 239000007789 gas Substances 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 239000012159 carrier gas Substances 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims abstract description 4
- 239000011812 mixed powder Substances 0.000 claims abstract description 3
- 239000002826 coolant Substances 0.000 claims description 27
- 230000007704 transition Effects 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000000463 material Substances 0.000 abstract description 4
- 230000005484 gravity Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000001413 cellular effect Effects 0.000 abstract 1
- 230000035611 feeding Effects 0.000 description 13
- 239000000498 cooling water Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000005245 sintering Methods 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000005465 channeling Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003500 flue dust Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
- B22F12/20—Cooling means
-
- 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
-
- 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
- B22F12/53—Nozzles
-
- 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
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/003—Apparatus, e.g. furnaces
-
- 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
- B22F10/20—Direct sintering or melting
- B22F10/25—Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
The purpose of the present invention is designing coaxial powder-feeding laser sintering device, it is mainly used for material increasing field.The present invention provides a kind of to provide continuous uniform the stable metal powder later and decadent stage of a school of thought under protection gas and the effect of the double-layer air-flow of carrier gas by six cellular type powder feeding channels, and laser is overlapped with the metal powder later and decadent stage of a school of thought in focal spot, realizes the laser sintering (SLS) of complicated metal parts.The beneficial effects of the present invention are: in 1. present invention taper in powder feeding channel shrink outlet, inlet and outlet diameter and with the design of laser center shaft angle degree can make metal powder convergence property is good, powder using efficiency is high, gravity influence it is small.2. the present invention can prevent outlet obstruction using six powder feeding holes, amount of powder is easily-controllable, improves powder using efficiency, is passed through the available uniform mixed-powder of different powder in each powder feeding pipe.3. using the inside and outside double-deck cooling system in the present invention.4. the present invention can carry out radial and axial adjusting respectively.
Description
Technical field
The present invention relates to coaxial powder-feeding laser sintering devices, and in particular to coaxial powder-feeding laser sintering device nozzle arrangements
Design, belongs to material increasing field.
Background technique
Laser sintering technology is generally used for the manufacture of the metal parts of labyrinth, is collection laser optics, computer, machine
Tool design, control are learned and the multi-subject knowledges such as materialogy are in the new material moulding process of one.
Laser sintering technology can make laser and metal powder material synchronous driving to formation zone to be processed, and enable powder
Accurately, it continuously and is uniformly overlapped, and is not influenced by the complexity of workpiece to be added in focus point with laser beam, i.e., coaxially
Powder feeding technology.For performance and the surface roughness etc. for guaranteeing metal parts internal organizational structure to be processed, to powder mass flow, powder feeding
Angle, powder convergence property, nozzle temperature control, metal problem of oxidation and meal outlet to focus point distance to the shadow of formation zone
Sound etc. is all critical issue involved in laser sintering technology.
It in view of the above problems, is the accurate combination for realizing laser and powder, the invention of coaxial powder-feeding laser sintering device is
It is necessary to.
Summary of the invention
The purpose of the present invention is designing coaxial powder-feeding laser sintering device, to realize the accurate knot of laser and metal powder
It closes, obtains the metal parts of preferable structure organization, in view of the above-mentioned problems, the present invention provides a kind of with six powder feeding pipe powder feedings
The laser nozzle of light exotrysian type coaxial powder-feeding, specific technical solution are as follows.
Coaxial powder-feeding laser sintering device is by laser and protection gas channel, interior coolant jacket, laser nozzle main body, outer cooling
Set, transition sleeve and laser head connector sleeve composition, wherein laser nozzle main body include six powder feeding channels, six carrier gas passages and
The paddle hole of interior coolant jacket.
Above-mentioned powder feeding channel is evenly distributed on that laser nozzle main body is circumferential, and powder feeding channel is tapered, and in laser channeling
Angle between mandrel is acute angle；
Each carrier gas passage and enter powder Kong Xiangtong, angle is acute angle between central axis, and direction level is on the lower side；
Inside and outside coolant jacket is respectively welded in laser nozzle main body, there is the Inlet and outlet water of interior coolant jacket in laser nozzle main body
Hole, and the paddle hole of outer coolant jacket is located on itself；
Transition sleeve is connect with laser nozzle main body by accurate thread, the ingate of protection gas is provided on transition sleeve, top is set
There is the structure of installation protection eyeglass；
There are the set screw hole for adjusting transition sleeve radial position and the threaded hole connecting with transition sleeve on connector sleeve.
The beneficial effects of the present invention are:
1. the taper in powder feeding channel shrinks outlet, inlet and outlet diameter and the design with the angle of laser center axis in the present invention
Metal powder can be made to converge, and property is good, segregation, powder using efficiency are high, gravity influences small, splashing and rebound phenomena is not serious.
2. the present invention can prevent outlet obstruction using six powder feeding holes, gravity influence is small, and amount of powder is easily-controllable, improves powder benefit
With rate, continual and steady uniform powder stream is provided, is passed through the available uniform mixed-powder of different powder in each powder feeding pipe.
3. the protection gas for sharing a channel in the present invention with laser can prevent sintering flue dust and the damage of splashing powder from focusing
Lens prevent sintering zone from aoxidizing, and so that powder stream is formed " powder curtain " with the carrier gas of powder feeding, improve the uniformity and benefit of powder
With rate.
4. carrier gas can play the role of constraint and convergence to powder in the present invention, reach the transport of long range, in addition to anti-
The only rebound dispersion of powder particle, can also protect area to be formed.
5. using the inside and outside double-deck cooling system in the present invention, internal layer uses bottom in and top out, recycles cooling water sufficiently and reach
The effect of cooling nozzles core, outer layer are above gone out using enterprising, and cooling water is prevented well into just being flowed out by outlet after cooling due to sharp
Light reflection makes laser nozzle deformation influence powder circulation to influence sintering precision.
6. the connection of transition sleeve and connector sleeve and laser nozzle main body can carry out radial and axial tune respectively in the present invention
Section, enables laser to be accurately overlapped in focal spot with powder stream；Transition sleeve is equipped with protection eyeglass isolation powder stream and focusing
Eyeglass makes focusing lens from pollution；The use of transition sleeve also improves interchangeability.
7. nozzle lower end surface is in the conical surface in the present invention, so that the powder to disperse is met again, powder using efficiency is improved, to scattering
Laser part is reflected to protect nozzle.
Detailed description of the invention:
The present apparatus is further illustrated with reference to the accompanying drawing.
Attached drawing 1: coaxial powder-feeding laser sintering device structure main cross-sectional schematic diagram；
Attached drawing 2: the right schematic cross-sectional view of coaxial powder-feeding laser sintering device structure；
Attached drawing 3: coaxial powder-feeding laser sintering device laser nozzle main structure main cross-sectional schematic diagram；
Attached drawing 4: coaxial powder-feeding laser sintering device structure entirety schematic front view；
In figure: 1- connector sleeve；2- transition sleeve；The gas atmosphere inlet 3-；Coolant jacket in 4-；5- powder channel；The spray of 6- laser
Mouth main body；The outer coolant jacket of 7-；8- enters powder hole；9- soket head cap screw hole；10- ring flange；11- set screw hole；12- sunk screw
Hole；Coolant jacket water inlet in 13-；The outer coolant jacket water outlet of 14-；The outer coolant jacket water inlet of 15-；Coolant jacket water outlet in 16-.
Specific embodiment
Referring to attached drawing 1, attached drawing 2, attached drawing 3, attached drawing 4, coaxial powder-feeding laser sintering device, it includes: connector sleeve (1), mistake
Cross set (2), gas atmosphere inlet (3), interior coolant jacket (4), powder channel (5), laser nozzle main body (6), outer coolant jacket (7),
Enter powder hole (8), soket head cap screw hole (9), ring flange (10), set screw hole (11), countersunk screw hole (12), interior cooling are inserted in
The mouth of a river (13), outer coolant jacket water outlet (14), outer coolant jacket water inlet (15), interior coolant jacket water outlet (16) composition.Its feature
Be: the connector sleeve (1) is connect with transition sleeve (2) with ring flange (10) by four soket head cap screw holes (9), connector sleeve
(1) there are gaps between transition sleeve (2), and along connector sleeve (1), circumferentially at set screw hole (11), there are three holding screws；Transition
Set (2) is connect with laser nozzle main body (6) by accurate thread, and gas atmosphere inlet (3) protect eyeglass on transition sleeve (2)
It is fixed at four countersunk screw holes (12)；Metal powder enters powder hole (8) from six and enters in powder channel (5), and powder
Inert gas, which is passed through, above last channel (5) carries metal powder；Interior coolant jacket (4) and laser nozzle main body (6) use solder
Weld together；Outer coolant jacket (7) is also welded together using solder with laser nozzle main body (6).
The course of work of the present invention is as follows:
The holding screw at set screw hole (11) in coaxial powder-feeding laser sintering device on connector sleeve (1) is for adjusting
The radial position of laser nozzle main body guarantees that laser beam passes through from nozzle center always；Transition sleeve (2) and laser nozzle main body
(6) it is screwed by accurate thread length, guarantees concentricity, and make laser spot and powder convergent point for micro-adjustment axial position
It is overlapped, protective gas, which shares laser channeling with laser from gas atmosphere inlet (3) entrance, prevents metal in molten bath from aoxidizing, and prevents from burning
The flue dust of knot and the powder of splashing damage condenser lens；Metal powder enters powder hole (8) from six and enters in powder channel (5), and
And be passed through inert gas above powder channel (5) and carry metal powder and continually and steadily reach focus point, in carrier gas and protective gas
Powder curtain is formed under collective effect and improves powder uniformity and utilization rate, and six powder feeding pipes can also be due to conveying various metals powder
End, and be uniformly mixed；Using the double-deck cooling system, enter interior coolant jacket from interior coolant jacket water inlet (13) in internal layer cooling water
(4) and in the lower chamber of laser nozzle main body (6), then enter in upper chamber from the baffle gap among upper and lower two chamber,
It is flowed out by interior coolant jacket water outlet (16), i.e. bottom in and top out, is fully cooled nozzle inner core；Cooling water is inserted in from outer cooling in outer layer
The mouth of a river (15) enters, and is flowed out after being fully cooled powder feeding channel and nozzle exterior by outer coolant jacket water outlet (14).
In the description of the present invention, it should be noted that the instruction such as term " on ", "lower", "front", "rear", "left", "right"
Orientation or positional relationship be to be based on the orientation or positional relationship shown in the drawings or side that when invention use usually puts
Position or positional relationship, are merely for convenience of description of the present invention and simplification of the description, rather than the device or member of indication or suggestion meaning
Part must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Claims (3)
1. coaxial powder-feeding laser sintering device, including connector sleeve (1), transition sleeve (2), gas atmosphere inlet (3), interior cooling
Set (4), laser nozzle main body (6), outer coolant jacket (7), enters powder hole (8), soket head cap screw hole (9), flange at powder channel (5)
It is disk (10), set screw hole (11), countersunk screw hole (12), interior coolant jacket water inlet (13), outer coolant jacket water outlet (14), outer
Coolant jacket water inlet (15), interior coolant jacket water outlet (16).
2. coaxial powder-feeding laser sintering device according to claim 1, it is characterised in that: the laser nozzle main body
(6) six powder channels (5) on provide single or uniformly mixed powder stream under protection gas and carrier gas effect.
3. coaxial powder-feeding laser sintering device according to claim 1, it is characterised in that: laser is under the double-deck cooling system
Laser sintering (SLS) is carried out in focal spot with metal powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910648209.1A CN110280763A (en) | 2019-07-18 | 2019-07-18 | Coaxial powder-feeding laser sintering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910648209.1A CN110280763A (en) | 2019-07-18 | 2019-07-18 | Coaxial powder-feeding laser sintering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110280763A true CN110280763A (en) | 2019-09-27 |
Family
ID=68023212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910648209.1A Pending CN110280763A (en) | 2019-07-18 | 2019-07-18 | Coaxial powder-feeding laser sintering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110280763A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111036906A (en) * | 2019-12-20 | 2020-04-21 | 鑫精合激光科技发展（北京）有限公司 | Method for laser additive manufacturing component and laser additive manufacturing system |
| CN111842896A (en) * | 2020-09-14 | 2020-10-30 | 哈尔滨理工大学 | Coaxial powder feeding and spraying device for processing high-complex-appearance workpiece |
| CN112139502A (en) * | 2020-10-23 | 2020-12-29 | 南京航空航天大学 | Inner wall additive manufacturing coaxial powder feeding nozzle with self-cleaning function |
| CN113510250A (en) * | 2021-07-20 | 2021-10-19 | 苏州研拓自动化科技有限公司 | Multi-material high-precision high-speed material increasing and decreasing integrated intelligent manufacturing equipment |
| CN113828803A (en) * | 2021-10-07 | 2021-12-24 | 哈尔滨理工大学 | All-round pressurized coaxial powder feeding nozzle device of adjusting |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111036906A (en) * | 2019-12-20 | 2020-04-21 | 鑫精合激光科技发展（北京）有限公司 | Method for laser additive manufacturing component and laser additive manufacturing system |
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| CN112139502A (en) * | 2020-10-23 | 2020-12-29 | 南京航空航天大学 | Inner wall additive manufacturing coaxial powder feeding nozzle with self-cleaning function |
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| CN113510250A (en) * | 2021-07-20 | 2021-10-19 | 苏州研拓自动化科技有限公司 | Multi-material high-precision high-speed material increasing and decreasing integrated intelligent manufacturing equipment |
| CN113510250B (en) * | 2021-07-20 | 2024-05-17 | 苏州研拓自动化科技有限公司 | Multi-material high-precision high-speed material increasing and decreasing integrated intelligent manufacturing equipment |
| CN113828803A (en) * | 2021-10-07 | 2021-12-24 | 哈尔滨理工大学 | All-round pressurized coaxial powder feeding nozzle device of adjusting |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190927 |