CN107737926A - A kind of laser gain material manufacture method of porous Al alloy - Google Patents
A kind of laser gain material manufacture method of porous Al alloy Download PDFInfo
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- CN107737926A CN107737926A CN201710843050.XA CN201710843050A CN107737926A CN 107737926 A CN107737926 A CN 107737926A CN 201710843050 A CN201710843050 A CN 201710843050A CN 107737926 A CN107737926 A CN 107737926A
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- alloy
- alloy powder
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- gain material
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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
-
- 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
-
- 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
- B22F3/10—Sintering only
- B22F3/11—Making porous workpieces or articles
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/08—Alloys with open or closed pores
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- 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]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/40—Radiation means
- B22F12/41—Radiation means characterised by the type, e.g. laser or electron beam
- B22F12/43—Radiation means characterised by the type, e.g. laser or electron beam pulsed; frequency modulated
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The present invention relates to a kind of laser gain material manufacture method of porous Al alloy, comprise the following steps：First layer alloy powder is uniformly laid on substrate；Laser focuses on first layer alloy powder and is scanned, and forms some first linear tracks；Some first linear track parallel intervals are set；Second layer alloy powder is uniformly laid on first layer alloy powder；Laser focuses on second layer alloy powder and is scanned, and forms some second linear tracks；Some second linear track parallel intervals are set, and are mutually perpendicular to form some holes with the first linear track；Successively accumulated according to principle of the linear tracks of N+1 of N+1 layer alloy powders perpendicular to the linear tracks of N of n-th layer alloy powder, realize the laser gain material manufacture of porous Al alloy.The size of hole is formed to control by accurately controlling the gap size of linear track, and then controls the porosity of aluminium alloy, can so obtain institutional framework densification, hardness is big, the high aluminium alloy of metallicity.
Description
Technical field
The present invention relates to laser gain material manufacturing technology field, the laser gain material manufacturer of particularly a kind of porous Al alloy
Method.
Background technology
Laser gain material manufacturing technology is a kind of typical RP technique, mainly utilizes high energy laser beam fusing metal powder
End, successively accumulate, direct forming high-performance complexity metallic element.Porous metals typically have that light, specific surface area is big, hole
The features such as rate is higher and controllable, porous metal material typically has the excellent properties of structural material and functional material, therefore it is applied
Scope is very wide.
Current manufacture porous material is manufactured using foaming technique more, such as foamed aluminium.Foaming metal is in molten metal
Middle addition tackifier and foaming agent, foamed aluminium is manufactured using the methods of sulfurizing casting after stirring.The bubble produced using foam pattern
Foam metal material porosity is high, and production efficiency is high, but the pore-size distribution of product, pore shape can not be controlled accurately, can only be overall
Control can not be controlled accurately in a maximum probability scope, cause that porous Al alloy institutional framework is not fine and close, hardness is smaller, compression
The inadequate present situation of performance.
The content of the invention
The technical problem to be solved in the present invention is, there is provided a kind of laser gain material manufacture method of porous Al alloy, it is intended to
Solve the porosity that existing manufacture method can not accurately control porous Al alloy, cause the Al-alloy metal performance produced not
The problem of high.
The technical solution adopted for the present invention to solve the technical problems is：A kind of laser gain material system of porous Al alloy is provided
Method is made, is comprised the following steps：
S1：First layer alloy powder is uniformly laid on substrate；
S2：Laser focuses on first layer alloy powder and is scanned, and forms some first linear tracks, while scanning
Blowning installation is to blowing protective gas at alloy powder fusing；Wherein, some first linear track parallel interval is set；
S3：After the scanning for completing first layer alloy powder, second layer alloyed powder is uniformly laid on first layer alloy powder
End；
S4：Laser focuses on second layer alloy powder and is scanned, and forms some second linear tracks, while scanning
Blowning installation is to blowing protective gas at alloy powder fusing；Wherein, some second linear track parallel interval is set, and with the
One linear track is mutually perpendicular to form some holes；
S5：According to the linear tracks of N+1 of N+1 layer alloy powders perpendicular to the linear tracks of N of n-th layer alloy powder
Principle successively accumulate, realize porous Al alloy laser gain material manufacture.
Further, the linear tracks of N+1 of the N+1 layer alloy powders and the N-1 lines of N-1 layer alloy powders
Shape track overlaps.
Further, the thickness of each layer of alloy powder is 600-800um.
Further, the alloy powder uses particle diameter distribution in 60-100um AlSi12 alloy powders.
Further, the laser is continuous or pulse laser.
Further, the blowning installation includes valve, the valve from side to being blown at alloy powder fusing,
The distance between the valve and alloy powder are 4-6mm, and blowout air velocity is 7L/min-9L/min.
Further, the protective gas of the valve blowout is argon gas.
Relative to prior art, the laser gain material manufacture method of a kind of porous Al alloy provided by the invention, according to N+1
Principle of the linear tracks of N+1 of layer alloy powder perpendicular to the linear tracks of N of n-th layer alloy powder is successively accumulated, and is realized
The laser gain material manufacture of porous Al alloy.The size of hole is formed to control by accurately controlling the gap size of linear track,
And then the porosity of aluminium alloy is controlled, institutional framework densification can be so obtained, hardness is big, the high aluminium alloy of metallicity.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the schematic diagram of the laser gain material manufacture method of porous Al alloy provided by the invention；
Fig. 2 is the schematic diagram of the first linear track；
Fig. 3 is the schematic diagram of the first linear track and the second linear track；
Fig. 4 is porous Al alloy internal organizational structure enlarged diagram.
Embodiment
In conjunction with accompanying drawing, presently preferred embodiments of the present invention is elaborated.
As shown in figure 1, the present invention provides a kind of laser gain material manufacture method of porous Al alloy, it is linear by accurately controlling
The gap size of track to form the size of hole to control, and then controls the porosity of aluminium alloy, can so obtain knot of tissue
Structure is fine and close, and hardness is big, the high aluminium alloy of metallicity.
This method comprises the following steps：
S1：First layer alloy powder is uniformly laid on the substrate 10；
S2：Laser 20 focuses on first layer alloy powder and is scanned, and some first linear tracks 1 is formed, in scanning
Blowning installation 30 is to blowing protective gas at alloy powder fusing simultaneously；Wherein, some first linear parallel interval of track 1 is set
(as shown in Figure 2).The spacing distance of first linear track 1 can be set according to being actually needed, especially by laser 20
Parameter is configured.
S3：After the scanning for completing first layer alloy powder, second layer alloyed powder is uniformly laid on first layer alloy powder
End；
S4：Laser 20 focuses on second layer alloy powder and is scanned, and some second linear tracks 2 is formed, in scanning
Blowning installation 30 is to blowing protective gas at alloy powder fusing simultaneously；Wherein, some second linear parallel interval of track 2 is set
Put, and be mutually perpendicular to form some holes 3 (as shown in Figures 3 and 4) with the first linear track 1；
S5：According to the linear tracks of N+1 of N+1 layer alloy powders perpendicular to the linear tracks of N of n-th layer alloy powder
Principle successively accumulate, realize porous Al alloy laser gain material manufacture.By accurately control the spacing size of linear track come
Control forms the size of hole, and then controls the porosity of aluminium alloy, can so obtain institutional framework densification, and hardness is big, gold
The high aluminium alloy of attribute energy.
In the present embodiment, the linear tracks of N+1 of N+1 layers alloy powder and the N-1 lines of N-1 layer alloy powders
Shape track overlaps.The distribution of pores of so whole aluminium alloy is neat, structure law, is advantageous to improve the metallicity of aluminium alloy.
The thickness of above-mentioned each layer of alloy powder is 600um-800um, if alloy powder thickness is too small, it is low to increase material efficiency；If
Alloy powder thickness is too big, then laser fusion is incomplete, affects the mechanical properties.
Specifically, alloy powder uses particle diameter distribution to be closed in 60-100um AlSi12 alloy powders, the AlSi12
Bronze end is 88 by quality parts ratio:12 aluminium element and element silicon composition, AlSi are commonly called as that aluminium silicon is bright, and mechanical property is good.
Further, the laser 20 is continuous or pulse laser, wherein, pulse laser is cheap, processing
Efficiency is slow；Continuous wave laser price, it is high in machining efficiency, it can be selected according to being actually needed.
Further, blowning installation 30 includes valve 31, valve 31 from side to being blown at alloy powder fusing, gas
The distance between mouth 31 and alloy powder are 4mm-6mm, and blowout air velocity is 7L/min-9L/min, air velocity and angle
Strictly to control, otherwise alloy powder can be blown away, influence processing effect.Wherein, the protective gas that valve 31 is blown out is argon
Gas, argon gas are inert gas, can prevent from being oxidized when alloy powder from melting.
In actual manufacturing process, laser 20 selects continuous wave laser, and alloy powder is existed using particle diameter distribution
80um AlSi12 alloy powders, the thickness of every layer of alloy powder are 700um, and the distance between valve 31 and alloy powder are
5mm, the argon gas for being 8L/min from side blowout air velocity, the aluminium alloy gone out using above-mentioned parameter increasing material manufacturing, interior solid,
Pore-free, non-oxidation metallicity are high.Its compression strength is about 150Mpa, and modulus of elasticity is about 3.2Gpa, compared to casting legal system
The compression strength and modulus of elasticity of standby porous Al alloy improve about 800% and 190% respectively.
In summary, the laser gain material manufacture method of a kind of porous Al alloy provided by the invention, by accurately controlling
The spacing of the second linear track 2 of spacing and control of one linear track 1, realizes the control of the size of hole 3, and then control whole aluminium
The porosity of alloy, the porosity of aluminium alloy is controlled with regard to the institutional framework density inside aluminium alloy can be controlled, the final aluminium that improves closes
The metallicity of gold.
It should be appreciated that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations, to ability
For field technique personnel, the technical scheme described in above-described embodiment can be modified, or it is special to which part technology
Sign carries out equivalent substitution；And all such modifications and replacement, it should all belong to the protection domains of appended claims of the present invention.
Claims (7)
1. the laser gain material manufacture method of a kind of porous Al alloy, it is characterised in that comprise the following steps：
S1：First layer alloy powder is uniformly laid on substrate；
S2：Laser focuses on first layer alloy powder and is scanned, and forms some first linear tracks, is blown while scanning
Device is to blowing protective gas at alloy powder fusing；Wherein, some first linear track parallel interval is set；
S3：After the scanning for completing first layer alloy powder, second layer alloy powder is uniformly laid on first layer alloy powder；
S4：Laser focuses on second layer alloy powder and is scanned, and forms some second linear tracks, is blown while scanning
Device is to blowing protective gas at alloy powder fusing；Wherein, some second linear track parallel interval is set, and and First Line
Shape track is mutually perpendicular to form some holes；
S5：According to N+1 layer alloy powders the linear tracks of N+1 perpendicular to the linear tracks of N of n-th layer alloy powder original
Reason is successively accumulated, and realizes the laser gain material manufacture of porous Al alloy.
2. the laser gain material manufacture method of porous Al alloy according to claim 1, it is characterised in that the N+1 layers
The linear tracks of N+1 of alloy powder overlap with the linear tracks of N-1 of N-1 layer alloy powders.
3. the laser gain material manufacture method of porous Al alloy according to claim 1 or 2, it is characterised in that each laminated
The thickness at bronze end is 600-800um.
4. the laser gain material manufacture method of porous Al alloy according to claim 1 or 2, it is characterised in that the alloy
Powder uses particle diameter distribution in 60-100um AlSi12 alloy powders.
5. the laser gain material manufacture method of porous Al alloy according to claim 4, it is characterised in that the laser is
Continuous or pulse laser.
6. the laser gain material manufacture method of porous Al alloy according to claim 1 or 2, it is characterised in that the air blowing
Device includes valve, the valve from side to being blown at alloy powder fusing, between the valve and alloy powder
Distance is 4-6mm, and blowout air velocity is 7L/min-9L/min.
7. the laser gain material manufacture method of porous Al alloy according to claim 6, it is characterised in that the valve blowout
Protective gas be argon gas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710843050.XA CN107737926A (en) | 2017-09-18 | 2017-09-18 | A kind of laser gain material manufacture method of porous Al alloy |
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| CN201710843050.XA CN107737926A (en) | 2017-09-18 | 2017-09-18 | A kind of laser gain material manufacture method of porous Al alloy |
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| CN107737926A true CN107737926A (en) | 2018-02-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113102775A (en) * | 2021-04-15 | 2021-07-13 | 广东华研智能科技有限公司 | Method for preparing foamed aluminum component through electric arc additive manufacturing |
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2017
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| US20040140078A1 (en) * | 2002-08-20 | 2004-07-22 | Jianxin Liu | Novel casting process and articles for performing same |
| CN102029389A (en) * | 2010-11-25 | 2011-04-27 | 西安交通大学 | Negative pressure-based device and method for manufacturing porous textures by laser sintering and quick molding |
| CN102409195A (en) * | 2011-12-02 | 2012-04-11 | 苏州大学 | Preparation method of porous tantalum and device applied to same |
| CN103752823A (en) * | 2013-12-25 | 2014-04-30 | 合肥工业大学 | Triangular mesh type laser scanning method for selective laser sintering |
| CN104399978A (en) * | 2014-11-27 | 2015-03-11 | 华南理工大学 | 3D (Three Dimensional) forming method for large-sized porous amorphous alloy part of complex shape |
| CN106694886A (en) * | 2016-11-30 | 2017-05-24 | 苏州大学 | Method for preparing foamed aluminum sandwich panel by lasers |
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| CN113102775A (en) * | 2021-04-15 | 2021-07-13 | 广东华研智能科技有限公司 | Method for preparing foamed aluminum component through electric arc additive manufacturing |
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Application publication date: 20180227 |