CN108356261A - A kind of powder body material and preparation method for alusil alloy 3D printing - Google Patents
A kind of powder body material and preparation method for alusil alloy 3D printing Download PDFInfo
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- CN108356261A CN108356261A CN201810323621.1A CN201810323621A CN108356261A CN 108356261 A CN108356261 A CN 108356261A CN 201810323621 A CN201810323621 A CN 201810323621A CN 108356261 A CN108356261 A CN 108356261A
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- Prior art keywords
- octamethylcy
- clotetrasiloxane
- acetone
- aluminium
- powder
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Classifications
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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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/06—Metallic powder characterised by the shape of the particles
- B22F1/065—Spherical particles
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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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/102—Metallic powder coated with organic material
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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
- B33Y70/00—Materials specially adapted for additive manufacturing
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- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Nanotechnology (AREA)
- Powder Metallurgy (AREA)
- Dental Preparations (AREA)
Abstract
A kind of powder body material and preparation method thereof for alusil alloy 3D printing, it is by the way that octamethylcy-clotetrasiloxane is dissolved in acetone, aluminium powder is added in octamethylcy-clotetrasiloxane acetone soln again and is stirred, mixture, which is carried out heating, again makes acetone volatilize completely, form the material of spherical metal aluminium powder outer wrapping octamethylcy-clotetrasiloxane organosilicone film, alusil alloy object can be formed for metal 3D printing, the silicon content in alusil alloy can be adjusted by adjusting the weight ratio of octamethylcy-clotetrasiloxane and aluminium powder.
Description
Technical field
The present invention is a kind of powder body material and preparation method thereof for alusil alloy 3D printing, is spherical metal aluminium powder
Outer wrapping octamethylcy-clotetrasiloxane organosilicone film, belongs to 3D printing field of material technology.
Background technology
The powder body material that existing dosing method carries out 3D printing alusil alloy is to be in a certain number of spherical metal aluminium powders
The silica flour for needing to be added or aluminium silicon master alloyed powder amount are calculated according to the ratio of aluminium silicon amount, weighs raw material by weight proportion,
After mechanical agitation is sufficiently mixed, become the powder body material for carrying out 3D printing alusil alloy object.Current 3D printing technique
There are direct metal laser sintering (DMLS) technology, electron-beam melting molding (EBM) technology, selective laser melting molding (SLM)
Technology, selective thermal sintering (SHS) technology and selective laser sintering (SLS) technology, principle are with point energy to part
Metal-powder gradually melts, is sintered and forms new metal material and shape, and sintering is characterized in that a sintering, energy density are smaller, burns
It is short to tie the time.The 3D printing powder body material that aluminium powder and silica flour or aluminium silicon master alloyed powder are mixedly configured into, silicon from aluminum-silicon alloy
The adding proportion of powder is smaller, and mechanical agitation cannot be guaranteed that silica flour or aluminium silicon master alloyed powder are evenly distributed with aluminium powder, sinter into
Object can cause material uneven；Be between each powder granule point contact, aluminium powder and silica flour or aluminium silicon master alloyed powder it
Between also have denier gap and air, although aluminium powder is combined in sintering instant melting and silica flour, aluminium silicon is complete
Crystal combination is formed, the metal objects of generation can only achieve the element ratio of alusil alloy, it cannot be guaranteed that shape on crystal structure
At alusil alloy, if needing to be heat-treated again to realize to be fully crystallized, and heat treatment process can cause 3D printing again
The change in shape of object；Aluminium powder aluminium silicon master alloyed powder fusing, sintering when be easy to aoxidize, cause 3D printing at alusil alloy
There are aluminium oxide in object, influence the Crystallization and physical property of alusil alloy.
Invention content
The present invention is a kind of material for alusil alloy 3D printing, and structure is in spherical metal aluminium powder outer wrapping prestox
Cyclotetrasiloxane film.Preparation method is：The weight ratio of aluminium and silicon, converses aluminium powder in the alusil alloy configured as required
With the weight ratio of octamethylcy-clotetrasiloxane, calculates by weight and weigh aluminium powder, octamethylcy-clotetrasiloxane.It is with anhydrous propanone
Solvent measures acetone volume according to the 1/4 of aluminium powder volume.Octamethylcy-clotetrasiloxane is dissolved in acetone, stirs evenly and is configured to
The solution of octamethylcy-clotetrasiloxane-acetone, then the spherical metal aluminium of al proportion weight will be met under the conditions of 10 DEG C of temperature ＜
Powder is put into octamethylcy-clotetrasiloxane --- and it stirs in acetone soln, then adds in 80-90 DEG C of region water-bath of temperature
Heat simultaneously stirs simultaneously, so that acetone is volatilized and takes away by the minimum gas of aluminium powder adsorption, octamethylcy-clotetrasiloxane precipitation at
It is wrapped in ball aluminum powder surface for film, the material of the aluminium powder line of parcels machine silicon fiml for alusil alloy 3D printing is made.Adjustment
The quantity of four cyclosiloxane of prestox of addition, can adjust the silicon content ratio in alusil alloy.The material of configuration is beaten in 3D
When print process stimulated light heat-agglomerating, because element silicon and aluminium powder are that encapsulated face contacts and is uniformly distributed in powder, it is easy to
Form alusil alloy uniform in material；Hydrocarbon in the hydrocarbon and organosilicone film on aluminium powder surface of acetone residue can fire
It burns the energy for increasing sintering and improves temperature, aluminium silicon is promoted to complete crystallization；Sintering, combustion process are because there is silicon thin film on aluminium powder surface layer
Contact of the aluminium with air is avoided, does not cause the oxidation of aluminium, does not have aluminium oxide presence in alusil alloy.
The content of present invention includes the following steps：
1, in raw material, ball aluminum powder granularity is in 16 μm of ＜ D9820 μm of ＜, 9 μm of ＜ D5012 μm of ＜, 2 μm of ＜ D104 μm of ＜'s
In range, tap density ＞ 2.62g/cm3, elemental metals aluminium content is 99.75% or more；Silicon member in octamethylcy-clotetrasiloxane
Cellulose content is 37.8%；Acetone is anhydrous propanone.
2, the weight ratio of aluminium and silicon in the alusil alloy configured as required converses four silica of aluminium powder and prestox ring
The weight ratio of alkane is calculated by weight and weighs aluminium powder, octamethylcy-clotetrasiloxane；Acetone is measured according to the 1/4 of aluminium powder volume to hold
Product.
3, load weighted octamethylcy-clotetrasiloxane is put into acetone under the conditions of 10 DEG C of temperature ＜ and stirs evenly mixing,
Form octamethylcy-clotetrasiloxane --- acetone soln.
4, load weighted aluminium powder being put into octamethylcy-clotetrasiloxane under the conditions of 10 DEG C of temperature ＜ --- acetone soln stirs
It mixes uniformly.
5, by the aluminium powder stirred evenly, octamethylcy-clotetrasiloxane --- the container of acetone soln is put into heating water bath dress
It sets, for water heating and temperature control at 80-90 DEG C, heating process keeps uniform stirring, so that acetone is volatilized completely, is prepared into alusil alloy
The material of the aluminium powder package octamethylcy-clotetrasiloxane film of 3D printing.
Specific implementation mode
1, take ball aluminum powder granularity in 16 μm of ＜ D9820 μm of ＜, 9 μm of ＜ D5012 μm of ＜, 2 μm of ＜ D10In the range of 4 μm of ＜,
Tap density ＞ 2.62g/cm3, elemental metals aluminium content is 99.75% or more；Prepare element silicon in octamethylcy-clotetrasiloxane
Content is 37.8%；Acetone is anhydrous propanone.
2, the ratio of the silicon from aluminum-silicon alloy prepared as required converses the weight of aluminium powder and octamethylcy-clotetrasiloxane
Than for.
3, for the alusil alloy weight and aluminium prepared as required with octamethylcy-clotetrasiloxane weight ratio, calculating takes spherical shape
The weight of aluminium powder and octamethylcy-clotetrasiloxane.According still further to the 1/4 of the volume of aluminium powder weight conversion, acetone volume is measured.
4, octamethylcy-clotetrasiloxane is put into acetone under the conditions of 10 DEG C of temperature ＜ and stirs evenly mixing, form eight first
Acetone soln stirs evenly basic ring tetrasiloxane --- then aluminium powder is put into octamethylcy-clotetrasiloxane by acetone soln ---.
5, will be equipped with aluminium powder, the octamethylcy-clotetrasiloxane stirred evenly --- the container of acetone soln is put into heating water bath
Device, for water heating and temperature control at 80-90 DEG C, heating process keeps uniform stirring, and alusil alloy 3D is prepared into after acetone volatilization
The material of the aluminium powder package octamethylcy-clotetrasiloxane film of printing, can be obtained alusil alloy part for 3D printing.
Example 1
1, alusil alloy 10kg of the silicone content 10% is prepared.Spherical shape aluminum powder particle size used is distributed in D98=18 μm, D50=
10 μm, D10=3 μm, tap density=2.63g/cm3Aluminium content is 99.75%；Element silicon in octamethylcy-clotetrasiloxane used
A concentration of content is 37.8%；Acetone used is anhydrous propanone.
2, the ratio of the silicon from aluminum-silicon alloy 10% prepared as required converses aluminium powder and octamethylcy-clotetrasiloxane
Weight ratio is 90.23: 26.5.
3, the alusil alloy weight and aluminium prepared as required takes ball with octamethylcy-clotetrasiloxane weight ratio after calculating
Shape aluminium powder 9.023kg；Take octamethylcy-clotetrasiloxane 2.65kg.The volume 3720cm to convert according to 9.023kg aluminium powders31/4,
Take acetone 930cm3。
4,2.65kg octamethylcy-clotetrasiloxanes are put into 930cm under the conditions of 10 DEG C of temperature ＜3It is stirred evenly in acetone
Mixing forms octamethylcy-clotetrasiloxane --- acetone soln, 9.023kg aluminium powders is then put into four silica of prestox ring
Alkane --- acetone soln stirs evenly.
5, will be equipped with aluminium powder, the octamethylcy-clotetrasiloxane stirred evenly --- the container of acetone soln is put into heating water bath
Device, for water heating and temperature control at 80-90 DEG C, heating process keeps uniform stirring, and alusil alloy 3D is prepared into after acetone volatilization
The material of the aluminium powder package octamethylcy-clotetrasiloxane film of printing, the aluminium silicon that silicon content 10% can be obtained for 3D printing close
Golden part.
Claims (3)
1. a kind of powder body material and preparation method for alusil alloy 3D printing is spherical metal aluminium powder outer wrapping prestox ring
Tetrasiloxane organosilicone film, preparation method include the following steps：
(1) weight ratio of aluminium and silicon, converses aluminium powder and octamethylcy-clotetrasiloxane in the alusil alloy configured as required
Weight ratio, calculate by weight and weigh aluminium powder, octamethylcy-clotetrasiloxane；Acetone volume is measured according to the 1/4 of aluminium powder volume；
(2) load weighted octamethylcy-clotetrasiloxane is put into acetone under the conditions of 10 DEG C of temperature ＜ and stirs evenly mixing, shape
At octamethylcy-clotetrasiloxane --- acetone soln, then load weighted aluminium powder is put into octamethylcy-clotetrasiloxane --- acetone is molten
Liquid stirs evenly；
(3) by the aluminium powder stirred evenly, octamethylcy-clotetrasiloxane --- the container of acetone soln is put into water bath heating device, water
For heating and temperature control at 80-90 DEG C, heating process keeps uniform stirring, so that acetone is volatilized completely, is prepared into for alusil alloy
The material of the aluminium powder package octamethylcy-clotetrasiloxane film of 3D printing.
2. a kind of powder body material and preparation method for alusil alloy 3D printing according to claim 1, feature exist
In ball aluminum powder granularity is in 16 μm of 20 μm of ＜ D98 ＜, 9 μm of 12 μm of ＜ D50 ＜, the model of 2 μm of 4 μm of ＜ D10 ＜ in raw materials
In enclosing, tap density ＞ 2.62g/cm3, elemental metals aluminium content is 99.75% or more；Element silicon in octamethylcy-clotetrasiloxane
Content is 37.8%；Acetone is anhydrous propanone.
3. a kind of powder body material and preparation method for alusil alloy 3D printing according to claim 1, feature exist
In by adjusting the silicon content in the weight ratio of octamethylcy-clotetrasiloxane and aluminium powder adjustment 3D printing alusil alloy object.
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| CN201810323621.1A CN108356261A (en) | 2018-04-12 | 2018-04-12 | A kind of powder body material and preparation method for alusil alloy 3D printing |
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Application publication date: 20180803 |