CN105710380A - Aluminum-contained metal printing powder and preparation method thereof - Google Patents
Aluminum-contained metal printing powder and preparation method thereof Download PDFInfo
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- 239000000843 powder Substances 0.000 title claims abstract description 79
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 58
- 239000002184 metal Substances 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 238000007639 printing Methods 0.000 title claims abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000000498 ball milling Methods 0.000 claims abstract description 31
- 239000002994 raw material Substances 0.000 claims abstract description 30
- 239000000956 alloy Substances 0.000 claims abstract description 28
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 25
- 229910000765 intermetallic Inorganic materials 0.000 claims abstract description 24
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- 238000004886 process control Methods 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 150000002739 metals Chemical class 0.000 claims description 35
- 229910052782 aluminium Inorganic materials 0.000 claims description 33
- 239000004411 aluminium Substances 0.000 claims description 28
- 239000002131 composite material Substances 0.000 claims description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- 229910003407 AlSi10Mg Inorganic materials 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 13
- 238000000889 atomisation Methods 0.000 claims description 11
- 238000000227 grinding Methods 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 claims description 7
- 229910000883 Ti6Al4V Inorganic materials 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 238000003801 milling Methods 0.000 claims description 2
- 229910052756 noble gas Inorganic materials 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 3
- 239000002041 carbon nanotube Substances 0.000 abstract 3
- 229910021393 carbon nanotube Inorganic materials 0.000 abstract 3
- 238000000034 method Methods 0.000 description 25
- 238000005516 engineering process Methods 0.000 description 18
- 239000000428 dust Substances 0.000 description 12
- 239000007789 gas Substances 0.000 description 12
- 238000012360 testing method Methods 0.000 description 12
- 239000002245 particle Substances 0.000 description 9
- 238000010146 3D printing Methods 0.000 description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- 238000009826 distribution Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 6
- 238000012387 aerosolization Methods 0.000 description 5
- 238000000137 annealing Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 5
- 229910052786 argon Inorganic materials 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000007873 sieving Methods 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 230000002929 anti-fatigue Effects 0.000 description 2
- 238000007499 fusion processing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000000875 high-speed ball milling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
-
- B22F1/0003—
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/041—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by mechanical alloying, e.g. blending, milling
-
- 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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
- C22C2026/002—Carbon nanotubes
Abstract
The invention discloses aluminum-contained metal printing powder and a preparation method thereof. The preparation method includes the following steps that an intermetallic compound block is prepared, specifically, aluminum powder, carbon nano tubes and a process control agent are mixed and then placed in a ball-milling blender, and the ball-milled mixture is subjected to cold-press molding to obtain the intermetallic compound block; and all raw materials and the intermetallic compound block are mixed according to the alloy raw material ratio of the aluminum-contained metal printing powder, and the mixture is smelted and atomized to obtain the aluminum-contained metal printing powder. By means of the preparation method, the problem that after the carbon nano tubes are added to the alloy materials, the alloy materials and a matrix can not get good wettability is solved; and besides, the carbon nano tubes are evenly distributed in the metal powder, so that the good abrasion resistance and long fatigue life are achieved.
Description
Technical field
The present invention relates to 3D printing technique field, particularly relate to a kind of aluminiferous metals and print powder and preparation method thereof.
Background technology
In recent years, 3D printing technique develops owing to can be directly produced complicated shape part rapidly, is applied in fields such as Aero-Space, hygiene medical treatment, automobile, art, buildings.3D prints and requires the features such as metal dust good sphericity, narrow particle size distribution (particle size distribution is between 15～53 μm), low, the good fluidity of oxygen content.Research emphasis present both at home and abroad is substantially on guarantee metal dust sphericity and oxygen content in power, test for the metal parts after molding is relatively fewer, generally can do Part Surface Roughness, density and stretching experiment, these performances can be met preferably after 3D prints, but when being by the testing fatigue of part, the general requirement being all extremely difficult to be correlated with, compared with forge piece, its fatigue life is all relatively poor, this is because enough internal stress can be produced in print procedure, the fatigue life of part is fatal by this.
The technology of current comparative maturity is to adopt aerosolization, plasma atomization and rotary electrode method carry out the production of spherical powder, its major product is for educating, medical treatment and space industry, part at printing shaping, under the premise that intensity and other performances reach requirement, its wear-resisting and fatigue behaviour is difficult to arrive expection requirement, compare with traditional casting and forged material, its wearability and fatigue life all differ greatly, its main cause is derived from two aspects: the first is in 3D print procedure, the rate of cooling of part is very fast, there is bigger internal stress, even if the later stage has carried out internal stress annealing, inside parts still can retain substantial amounts of internal stress, it two be the formation of hard phase second phase particles is need certain forming core and grow up the time, but in 3D print procedure, thawing and the solidification of metal all complete in very short time, and the temperature in print procedure can not be completely secured the temperature range grown up at second phase particles forming core, moreover the temperature of part can be reduced to relatively low temperature in a short period of time.
The material that current 3D prints seldom adds the trace element that wearability and fatigue behaviour is favourable, even if there is a small amount of trace element also because the internal stress of accumulation cannot be completely eliminated and make all to can not get its wearability of metal parts after 3D prints and fatigue life ensureing in 3D print procedure.
In order to generate the equally distributed Second Phase Particle of disperse in the alloy, general alloy is add C element to form the carbides such as MC, M23C6, but improves C content and cause that the fragility of material increases, be unfavorable for the combination property of material.Also have by adding CNT, but the CNT problem with the wettability between matrix material can not be solved, which results in the reduction of material function in use or disappearance.
Metal parts after 3D printing goes for good mechanical performance needs complicated postprocessing working procedures, and this adds manufacturing cost to a certain extent.
Summary of the invention
Based on this, it is an object of the invention to provide a kind of preparation method that can improve aluminiferous metals printing powder wearability and anti-fatigue performance.
Concrete technical scheme is as follows:
The preparation method that a kind of aluminiferous metals prints powder, comprises the steps:
The preparation of intermetallic compound composite block:
Being placed in ball grinding stirring machine by the mixing of aluminium powder, CNT and process control agent, the technological parameter of ball milling is: control ratio of grinding media to material is 5-25:1, and rotating speed is 700-1300r/min, and Ball-milling Time is 60-180min, and milling atmosphere is noble gas；Mixture after ball milling, through cold moudling, obtains described intermetallic compound composite block；
The addition of described CNT is the 1-20wt% of described aluminium powder consumption, and the addition of described process control agent is the 1-5wt% of described aluminium powder consumption；
The alloy raw material proportioning printing powder by described aluminiferous metals mixes each raw material and described intermetallic compound composite block, and the addition of described intermetallic compound composite block is the 1-20% that described aluminiferous metals prints powder gross mass；Then carry out melting, atomization, obtain described aluminiferous metals and print powder.
Wherein in some embodiments, described process control agent is ethanol and/or sodium stearate.
Wherein in some embodiments, described process control agent is mass ratio is ethanol and the sodium stearate of 1:1.
Wherein in some embodiments, the diameter of described CNT is 20-40nm, and length is 5-30 μm.
Wherein in some embodiments, in described aluminium powder, the weight/mass percentage composition of aluminium element is more than 99.5wt%.
Wherein in some embodiments, the technological parameter of described ball milling is: control ratio of grinding media to material is 10-20:1, and rotating speed is 900-1300r/min, and Ball-milling Time is 60-120min.
It is a further object of the present invention to provide a kind of wearability and the good aluminiferous metals of anti-fatigue performance prints powder.
Concrete technical scheme is as follows:
The aluminiferous metals that above-mentioned preparation method prepares prints powder.
Wherein in some embodiments, described aluminiferous metals prints the alloy of powder and consists of Ti6Al4V or ALSi10Mg.
Wherein in some embodiments, described aluminiferous metals prints the oxygen content of powder less than 1200ppm, and less than 53 μm powder occupation rates are 50-70wt%.
Principles of the invention and advantage are as follows:
The preparation method of the present invention overcomes in alloy material adds after CNT, it is impossible to the problem obtaining good wettability with matrix, and enables to CNT and be uniformly distributed in metal dust, and then obtains good anti-wear performance and good fatigue life.
1. the high speed ball milling of CNT and aluminium powder ensure that CNT and aluminum define intermetallic compound, and in fusion process, CNT is not exposed in hot environment, it is ensured that CNT not being melted in follow-up fusion process；
2. the preparation method of the present invention ensure that CNT will not by a large amount of scaling loss in high temperature alloy liquid, ensure that and last alloy powder can contain substantial amounts of CNT, CNT prints in powder printing becomes metallic element as the fine particle of even dispersion powder, can play reinforced metal part machinery performance and abrasion and fatigue behaviour at aluminiferous metals；
3. adopting the preparation method of the present invention to obtain aluminiferous metals powder and carry out the post processing of routine after printing, the product obtained all can obtain good anti-wear performance and good fatigue life, meets the requirement of conventional mechanical performance test.
Detailed description of the invention
By the following examples the application is further elaborated.
Embodiment 1
A kind of aluminiferous metals prints powder, and alloy consists of AlSi10Mg, and its preparation method comprises the steps:
(1) it it is 70 μm by D50, aluminum content is that the aluminium powder of 99.5wt% is as raw material, aluminium powder adds CNT, its content is the 5wt% of aluminium powder, its length is 5-15 μm, diameter is 20-25nm, batch mixing is carried out according to aforementioned proportion, adding procedure controlling agent (is specially sodium stearate), the content of process control agent is the 2% of content of aluminium powder, by aluminum powder, CNT and process control agent are mixed into raw material, weight is 2kg, above-mentioned raw material is carried out ball-milling treatment, nodularization medium is stainless steel ball, its ratio of grinding media to material is 10:1, ball-milling treatment is carried out under argon gas is protected, ball milling speed is 900r/min, Ball-milling Time is 60min, powder good for ball milling is carried out cold pressing treatment and obtains intermetallic compound composite block.
(2) according to the ratio requirement of AlSi10Mg alloy, intermetallic compound composite block obtained above is carried out proportioning with other raw materials, the ratio that wherein intermetallic compound composite block accounts in raw material is 3%, adopt heating in vacuum technology that raw material is carried out melting, aerosolization technology is adopted to be prepared, the temperature controlling gas in atomization process is 500 DEG C, atomizing pressure is 1MPa, air velocity is that the ratio 8:1 of 500m/s and gas flow and fluid flow is to control whole atomization process, the aluminiferous metals obtained is printed powder (AlSi10Mg) carry out sieving and batch mixing, test relevant parameter, the particle size distribution of such as metal dust, oxygen content in powder, and with not adding CNT and adopting the metal dust that identical device and technology obtain to carry out 3D printing, SLS technology is all adopted to print, obtain stretching standard component, carry out stretching experiment after the annealing process, test its intensity, the result obtained is as follows:
It can be seen from the above results that tensile strength and yield strength at the AlSi10Mg alloy added after CNT have lifting.
Embodiment 2:
A kind of aluminiferous metals prints powder, and alloy consists of AlSi10Mg, and its preparation method comprises the steps:
(1) it it is 100 μm by D50, aluminum content is that the aluminium powder of 99.8wt% is as raw material, aluminium powder adds CNT, its content is the 15wt% of aluminium powder, its length is 20-30 μm, diameter is 25-30nm, batch mixing is carried out according to aforementioned proportion, adding procedure controlling agent (is specially ethanol), the content of process control agent is the 5wt% of content of aluminium powder, by aluminum powder, CNT and process control agent are mixed into raw material, weight is 5kg, above-mentioned raw material is carried out ball-milling treatment, nodularization medium is stainless steel ball, its ratio of grinding media to material is 15:1, ball-milling treatment is carried out under argon gas is protected, ball milling speed is 1000r/min, Ball-milling Time is 120min, powder good for ball milling is carried out cold pressing treatment and obtains intermetallic compound composite block.
(2) according to the ratio requirement of AlSi10Mg alloy, intermetallic compound composite block obtained above is carried out proportioning with other raw materials, the ratio that wherein intermetallic compound composite block accounts in raw material is 10wt%, adopt heating in vacuum technology that raw material is carried out melting, aerosolization technology is adopted to be prepared, atomization process controls the temperature 550 DEG C of gas, atomizing pressure 1.5MPa, the ratio 10:1 of air velocity 450m/s and gas flow and fluid flow controls whole atomization process, the aluminiferous metals obtained is printed powder (AlSi10Mg) carry out sieving and batch mixing, test relevant parameter, the particle size distribution of such as metal dust, oxygen content in powder, and with not adding CNT and adopting the metal dust that identical device and technology obtain to carry out 3D printing, SLS technology is all adopted to print, obtain stretching standard component, carry out stretching experiment after the annealing process, test its intensity, the result obtained is as follows:
It can be seen from the above results that tensile strength and yield strength at the AlSi10Mg alloy added after CNT have lifting.
Embodiment 3:
A kind of aluminiferous metals prints powder, and alloy consists of AlSi10Mg, and its preparation method comprises the steps:
(1) it it is 100 μm by D50, aluminum content is that the aluminium powder of 99.8wt% is as raw material, aluminium powder adds CNT, its content is the 15wt% of aluminium powder, its length is 20-30 μm, diameter is 25-30nm, batch mixing is carried out according to aforementioned proportion, adding procedure controlling agent (is specially ethanol and sodium stearate that mass ratio is 1:1), the content of process control agent is the 5wt% of content of aluminium powder, by aluminum powder, CNT and process control agent are mixed into raw material, weight is 5kg, above-mentioned raw material is carried out ball-milling treatment, nodularization medium is stainless steel ball, its ratio of grinding media to material is 15:1, ball-milling treatment is carried out under argon gas is protected, ball milling speed is 1000r/min, Ball-milling Time is 100min, powder good for ball milling is carried out cold pressing treatment and obtains intermetallic compound composite block.
(2) according to the ratio requirement of AlSi10Mg alloy, intermetallic compound composite block obtained above is carried out proportioning with other raw materials, the ratio that wherein intermetallic compound composite block accounts in raw material is 10wt%, adopt heating in vacuum technology that raw material is carried out melting, aerosolization technology is adopted to be prepared, atomization process controls the temperature 580 DEG C of gas, atomizing pressure 2MPa, the ratio 9:1 of air velocity 480m/s and gas flow and fluid flow controls whole atomization process, the aluminiferous metals obtained is printed powder (AlSi10Mg) carry out sieving and batch mixing, test relevant parameter, the particle size distribution of such as metal dust, oxygen content in powder, and with not adding CNT and adopting the metal dust that identical device and technology obtain to carry out 3D printing, SLS technology is all adopted to print, obtain stretching standard component, carry out stretching experiment after the annealing process, test its intensity, the result obtained is as follows:
It can be seen from the above results that tensile strength and yield strength at the AlSi10Mg alloy added after CNT have lifting.
Embodiment 4:
A kind of aluminiferous metals prints powder, and alloy consists of Ti6Al4V, and its preparation method comprises the steps:
(1) it it is 130 μm by D50, aluminum content is that the aluminium powder of 99.8wt% is as raw material, aluminium powder adds CNT, its content is the 20wt% of aluminium powder, its length is 15-30 μm, diameter is 25-40nm, batch mixing is carried out according to aforementioned proportion, adding procedure controlling agent (is specially ethanol and sodium stearate that mass ratio is 1:1), the content of process control agent is the 5wt% of content of aluminium powder, by aluminum powder, CNT and process control agent are mixed into raw material, weight is 5kg, above-mentioned raw material is carried out ball-milling treatment, nodularization medium is stainless steel ball, its ratio of grinding media to material is 20:1, ball-milling treatment is carried out under argon gas is protected, ball milling speed is 1300r/min, Ball-milling Time is 120min, powder good for ball milling is carried out cold pressing treatment and obtains intermetallic compound composite block.
(2) according to the ratio requirement of Ti6Al4V alloy, intermetallic compound composite block obtained above is carried out proportioning with other raw materials, the ratio that wherein intermetallic compound composite block accounts in raw material is 20wt%, adopt heating in vacuum technology that raw material is carried out melting, aerosolization technology is adopted to be prepared, atomization process controls the temperature 700 DEG C of gas, atomizing pressure 2.1MPa, the ratio 7:1 of air velocity 480m/s and gas flow and fluid flow controls whole atomization process, the aluminiferous metals obtained is printed powder (Ti6Al4V) carry out sieving and batch mixing, test relevant parameter, the particle size distribution of such as metal dust, oxygen content in powder, and with not adding CNT and adopting the metal dust that identical device and technology obtain to carry out 3D printing, SLS technology is all adopted to print, obtain stretching standard component, carry out stretching experiment after the annealing process, test its intensity, the result obtained is as follows:
It can be seen from the above results that tensile strength and yield strength at the Ti6Al4V alloy added after CNT have lifting.
Sample after printing is carried out wear test, and experimental result is as follows:
Can be seen that its anti-wear performance is greatly improved by upper table.
Carrying out fatigue experiment with PLG-100 HF fatigue testing machine after finished product after printing is carried out grinding and polishing process, experimental result is as shown in the table:
Test result indicate that, being added to by CNT in alloy, the fatigue behaviour of alloy there has also been very big lifting.
The present invention is not limited only to single or a kind metal dust, identical method can be adopted to carry out interpolation and the powder process of CNT for the alloy containing aluminium element, for 3D metallic print aspect, can effectively carry heavy alloyed properties, be conducive to alloy application in 3D printing technique.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics is absent from contradiction, all it is considered to be the scope that this specification is recorded.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that, for the person of ordinary skill of the art, without departing from the inventive concept of the premise, it is also possible to making some deformation and improvement, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. the preparation method that an aluminiferous metals prints powder, it is characterised in that comprise the steps:
The preparation of intermetallic compound composite block:
Being placed in ball grinding stirring machine by the mixing of aluminium powder, CNT and process control agent, the technological parameter of ball milling is: control ratio of grinding media to material is 5-25:1, and rotating speed is 700-1300r/min, and Ball-milling Time is 60-180min, and milling atmosphere is noble gas；Mixture after ball milling, through cold moudling, obtains described intermetallic compound composite block；
The addition of described CNT is the 1-20wt% of described aluminium powder consumption, and the addition of described process control agent is the 1-5wt% of described aluminium powder consumption；
The alloy raw material proportioning printing powder by described aluminiferous metals mixes each raw material and described intermetallic compound composite block, and the addition of described intermetallic compound composite block is the 1-20% that described aluminiferous metals prints powder gross mass；Then carry out melting, atomization, obtain described aluminiferous metals and print powder.
2. the preparation method that aluminiferous metals according to claim 1 prints powder, it is characterised in that described process control agent is ethanol and/or sodium stearate.
3. the preparation method that aluminiferous metals according to claim 2 prints powder, it is characterised in that described process control agent is mass ratio is ethanol and the sodium stearate of 1:1.
4. the preparation method that aluminiferous metals according to claim 1 prints powder, it is characterised in that the diameter of described CNT is 20-40nm, and length is 5-30 μm.
5. the preparation method that aluminiferous metals according to claim 1 prints powder, it is characterised in that in described aluminium powder, the weight/mass percentage composition of aluminium element is more than 99.5wt%.
6. the preparation method that the aluminiferous metals according to any one of claim 1-5 prints powder, it is characterised in that the technological parameter of described ball milling is: control ratio of grinding media to material is 10-20:1, and rotating speed is 900-1300r/min, and Ball-milling Time is 60-120min.
7. the aluminiferous metals that the preparation method described in any one of claim 1-6 prepares prints powder.
8. aluminiferous metals according to claim 7 prints powder, it is characterised in that described aluminiferous metals prints the alloy of powder and consists of Ti6Al4V or AlSi10Mg.
9. aluminiferous metals according to claim 7 prints powder, it is characterised in that described aluminiferous metals prints the oxygen content of powder less than 1200ppm, and less than 53 μm powder occupation rates are 50-70wt%.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735269A (en) * | 2016-12-16 | 2017-05-31 | 南通金源智能技术有限公司 | The method for preparing the 3D printing Al alloy powder of excellent sintering character |
| CN106735268A (en) * | 2016-12-16 | 2017-05-31 | 南通金源智能技术有限公司 | Preparation method for reducing the 3D printing metal powder material of hollow powder |
| CN107695338A (en) * | 2017-09-21 | 2018-02-16 | 北京宝航新材料有限公司 | A kind of AlSi7Mg dusty materials and preparation method thereof and its application |
| CN107716918A (en) * | 2017-09-21 | 2018-02-23 | 北京宝航新材料有限公司 | A kind of AlSi10Mg dusty materials and preparation method thereof and its application |
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| CN107695338A (en) * | 2017-09-21 | 2018-02-16 | 北京宝航新材料有限公司 | A kind of AlSi7Mg dusty materials and preparation method thereof and its application |
| CN107716918A (en) * | 2017-09-21 | 2018-02-23 | 北京宝航新材料有限公司 | A kind of AlSi10Mg dusty materials and preparation method thereof and its application |
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