CN109261977A - A kind of 3D printing metal powder of Fine by Ultrasonic crystal grain and preparation method thereof - Google Patents
A kind of 3D printing metal powder of Fine by Ultrasonic crystal grain and preparation method thereof Download PDFInfo
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- CN109261977A CN109261977A CN201811445981.5A CN201811445981A CN109261977A CN 109261977 A CN109261977 A CN 109261977A CN 201811445981 A CN201811445981 A CN 201811445981A CN 109261977 A CN109261977 A CN 109261977A
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 147
- 239000002184 metal Substances 0.000 title claims abstract description 146
- 239000000843 powder Substances 0.000 title claims abstract description 66
- 239000013078 crystal Substances 0.000 title claims abstract description 38
- 238000010146 3D printing Methods 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 46
- 238000005266 casting Methods 0.000 claims abstract description 43
- 238000007711 solidification Methods 0.000 claims abstract description 25
- 230000008023 solidification Effects 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000009210 therapy by ultrasound Methods 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 11
- 229910000838 Al alloy Inorganic materials 0.000 claims description 66
- 239000000523 sample Substances 0.000 claims description 59
- 239000000956 alloy Substances 0.000 claims description 47
- 229910045601 alloy Inorganic materials 0.000 claims description 46
- 229910052782 aluminium Inorganic materials 0.000 claims description 40
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 40
- 238000007670 refining Methods 0.000 claims description 25
- 239000012459 cleaning agent Substances 0.000 claims description 24
- 239000000155 melt Substances 0.000 claims description 23
- 238000003756 stirring Methods 0.000 claims description 14
- 230000007423 decrease Effects 0.000 claims description 13
- 239000000428 dust Substances 0.000 claims description 12
- 238000000227 grinding Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 2
- 230000004927 fusion Effects 0.000 claims description 2
- 238000000527 sonication Methods 0.000 claims description 2
- 238000005204 segregation Methods 0.000 abstract description 3
- 238000003723 Smelting Methods 0.000 abstract description 2
- 238000005058 metal casting Methods 0.000 abstract 2
- 229910001338 liquidmetal Inorganic materials 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 description 19
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 10
- 239000010931 gold Substances 0.000 description 10
- 229910052737 gold Inorganic materials 0.000 description 10
- 238000010907 mechanical stirring Methods 0.000 description 10
- 238000002844 melting Methods 0.000 description 10
- 230000008018 melting Effects 0.000 description 10
- 238000002604 ultrasonography Methods 0.000 description 6
- 239000006025 fining agent Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001737 promoting effect Effects 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
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- B22F1/0003—
-
- 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
-
- 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
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- 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
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- 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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- 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
- C22C21/003—Alloys based on aluminium containing at least 2.6% of one or more of the elements: tin, lead, antimony, bismuth, cadmium, and titanium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses 3D printing metal powders of a kind of Fine by Ultrasonic crystal grain and preparation method thereof；The preparation method, using primary ultrasonic treatment, promotes that grain refiner is more uniform to be melted in the liquid of parent metal in metal smelting process, is ultrasonically treated again in process of setting, refines the crystal grain in Casting Ingot Solidification Process；By being ultrasonically treated twice, the solidified structure of ingot casting is made to become uniformly tiny equiax crystal from coarse column crystal, the cavitation that ultrasonic wave generates can promote the generation of liquid metal center, and ingot casting gross segregation and microsegregation can be improved；The microcosmic crystal grain of the metal powder prepared is small, and the metal casting mechanical property prepared can be high, fundamentally improves the mechanical property for the metal casting prepared.
Description
[technical field]
The invention belongs to 3D printing field, it is related to 3D printing metal powder and its preparation side of a kind of Fine by Ultrasonic crystal grain
Method.
[background technique]
The mechanical mechanics property of metal material depends primarily on its internal tissue and structure, and in organizing one it is important
Characteristic parameter is exactly grain size, so refining grain size and control grain size are particularly important.The side of refinement crystal grain at present
There are mainly two types of methods, and one kind is that grain refiner is added in metal bath, and another kind of is using physical vibration method.It is wherein brilliant
The type of grain fining agent is limited, as commercialization Al-Ti-B intermediate alloy common in aluminium and aluminium alloy, cannot be used for rafifinal
Crystal grain refinement can not highly desirable inhibit the solidifying segregation of some alloys.To magnesium and magnesium alloy, grain refining effect and
Various limitations are especially prominent, and even grain refiner is not present in some, so the type in grain refiner can not be related to institute
When having metal and alloy, the applicability of physical vibration method is most wide, and wherein ultrasonic vibration has greatly as state-of-the-art technology
Application prospect and researching value.
[summary of the invention]
It is an object of the invention to overcome the above-mentioned prior art, a kind of 3D printing metal of Fine by Ultrasonic is provided
Powder and preparation method thereof；The present invention has refined 3D printing by applying ultrasonic activation in the preparation process of metal powder
With the crystal grain of metal powder, the mechanical mechanics property of 3D printing metal material is fundamentally optimized.
In order to achieve the above objectives, the present invention is achieved by the following scheme:
A kind of preparation method of the 3D printing metal powder of Fine by Ultrasonic crystal grain, comprising the following steps:
(1) aluminum or aluminum alloy is melted, the aluminum or aluminum alloy liquid of molten condition is obtained, is parent metal melt A；
(2) any one in Al-Ti-C system intermediate alloy is added in the parent metal melt A that step (1) obtains；
Stirring is completely melt to intermediate alloy after addition, obtains the parent metal melt that intermediate alloy is added, and is molten metal B；
(3) it is ultrasonically treated molten metal B, obtains molten metal C；
(4) dross that surface in the molten metal C that step (3) obtain is removed by slag-cleaning agent, obtains molten metal D；
(5) molten metal D is cast in metal die, obtains ingot casting after cooling；
(6) after crushing ingot casting and refining, the aluminium or aluminium conjunction that -200~+500 purposes contain Al-Ti-C system intermediate alloy are obtained
Bronze end is the 3D printing metal powder of Fine by Ultrasonic.
A further improvement of the present invention is that:
Preferably, in step (1), the fusion temperature of aluminum or aluminum alloy is 750 DEG C, after aluminum or aluminum alloy fusing, heat preservation
30min obtains parent metal melt A.
Preferably, in step (2), the Ti equivalent in the Al-Ti-C system intermediate alloy of addition accounts for aluminium or aluminium in step (1) and closes
20~200ppm of gold.
Preferably, in step (2), intermediate alloy stirs 5~10min after being added in parent metal melt A.
Preferably, in step (3), the detailed process of ultrasonic treatment are as follows: the ultrasonic probe of Vltrasonic device is dropped into metal
Above melt B, is contacted with the liquid level of molten metal B, be preheated to the temperature of ultrasonic probe to 750 DEG C；Continue decline to pop one's head in molten
10~15mm below liquid liquid level, is ultrasonically treated molten metal.
Preferably, in step (3), 5min is kept the temperature after decline probe to 10~15mm below melt liquid level, is carried out at ultrasound
Reason, sonication treatment time are 5~10min.
Preferably, in step (4), slag-cleaning agent is added, refines the dross on removal molten metal surface after 10min, obtains gold
Belong to melt D.
Preferably, in step (5), after molten metal D is cast in metal die, the ultrasonic probe of Vltrasonic device is declined
Into the melt of mold；With the solidification of metal liquid D, ultrasonic probe is gradually moved up, and continues to ultrasound during moving up
Wave, until metal solidifies completely, completely before solidification, ultrasonic probe is proposed to outside ingot casting.
Preferably, in step (6), after crushing ingot casting, the coarse dust of 100 mesh or more is got rid of with sieve；By fine grinding, obtain
Contain the aluminum or aluminum alloy powder of Al-Ti-C system intermediate alloy to -200~+500 purposes.
A kind of 3D printing metal powder for the Fine by Ultrasonic crystal grain that above-mentioned any one preparation method is prepared.
Compared with prior art, the invention has the following advantages:
The invention discloses a kind of preparation methods of the 3D printing metal powder of Fine by Ultrasonic crystal grain；The preparation method exists
Using primary ultrasonic treatment in metal smelting process, the melt for being melted in parent metal for promoting grain refiner more uniform
In, it is ultrasonically treated again in process of setting, refines the crystal grain in Casting Ingot Solidification Process；By being ultrasonically treated twice, make to cast
The solidified structure of ingot becomes uniform tiny equiax crystal from coarse column crystal, and the cavitation that ultrasonic wave generates can promote liquid
The generation of metal center, and ingot casting gross segregation and microsegregation can be improved；This method is avoided simultaneously using mechanical
Ball milling adds the problem of fining agent in this softer matrix powder of aluminium and aluminium alloy, to add in softer parent metal powder
Refinement agent provides thinking；More large batch of the matrix powder containing fining agent can be made in this method, to aluminium and aluminium alloy
Grain refining effect is significant, and the addition of a small amount of intermediate alloy can largely refine the crystal grain of aluminium and aluminium alloy, reduce
Manufacturing cost, crystal grain refinement to aluminium and aluminium alloy and metal of the same clan is of great significance and application value.
The invention also discloses a kind of 3D printing metal powder of Fine by Ultrasonic, which passes through in parent metal
Fining agent is added in powder, while by being ultrasonically treated twice, the microcosmic crystal grain of the metal powder prepared is tiny, the gold prepared
Belong to part high mechanical properties, fundamentally improves the mechanical property for the metal parts prepared.
[Detailed description of the invention]
Fig. 1 is the pure Al ingot casting macrograph of ultrasound of comparative example of the present invention；
Fig. 2 is that the ultrasonic equivalent containing Ti of the embodiment of the present invention 1 is the pure Al ingot casting macrograph of 25ppm；
[specific embodiment]
Below with reference to specific steps, the invention will be described in further detail, and the invention discloses a kind of Fine by Ultrasonic crystal grain
3D printing metal powder and preparation method thereof, preparation method specifically includes following procedure:
(1) it melts parent metal: aluminum or aluminum alloy material being put into crucible, aluminium alloy can select the aluminium of any trade mark
Alloy, such as 7050 and 7075；And crucible is put into crucible type melting resistance furnace and is heated to 750 DEG C, all melt to aluminium
After change, 30min is kept the temperature, molten condition aluminum or aluminum alloy liquid, i.e. the parent metal liquid A of molten condition are obtained.
(2) it adds intermediate alloy: any one in grain refiner Al-Ti-C system intermediate alloy being added to according to quantity molten
Melt in the parent metal liquid of state, Al-Ti-C system intermediate alloy such as Al-5Ti-1C, Al-3Ti-1C and Al-3Ti-0.15C
Deng；The additive amount of fining agent is calculated according to the Ti equivalent in intermediate alloy, i.e. the Ti equivalent of intermediate alloy account in step (1) aluminium or
25~200ppm of aluminium alloy weight；After intermediate alloy is added, 5~10min of mechanical stirring is carried out by stirring rod, keeps crystal grain thin
Agent can sufficiently melt, and obtain the parent metal melt that intermediate alloy is added, and be molten metal B.
(3) it is ultrasonically treated: the ultrasonic probe of Vltrasonic device being dropped to and is in contact with the liquid level of above-mentioned melt, preheating ultrasound
It pops one's head in (splash for preventing metal liquid), after the temperature for being preheated to probe is 750 DEG C, continues decline probe to melt liquid level or less
10~15mm, after keeping the temperature 5min again, temperature is 750 DEG C, is ultrasonically treated, and the processing time is 5~10min, ultrasonic treatment
Afterwards, molten metal C is obtained.
(4) refining slagging-off: adding slag-cleaning agent in above-mentioned molten metal C, and the additional amount of slag-cleaning agent is molten for every 500g metal
1g slag-cleaning agent is added in liquid C, refines the dross of removal molten surface after 10min, obtains molten metal D.
(5) it molds: the above-mentioned melt by ultrasonic treatment being poured into ready metal die, simultaneously: will be ultrasonic
The ultrasonic probe of device drops to melt liquid level hereinafter, because metal freezing is process from outside to inside, and the lowest part of ingot casting
It solidifies at first, therefore as the solidification of metal, ultrasonic probe gradually move up, continues to ultrasonic wave during moving up, until
Metal solidifies completely, and completely before solidification, ultrasonic probe is it is also proposed that outside metal；It is formed simultaneously ingot casting.Due to molten in aluminium and aluminium alloy
It is added to a certain amount of Al-Ti-C system intermediate alloy in liquid, and applies ultrasonic wave in process of setting, so melt is in process of setting
In its crystal grain can obtain the effect of the dual refinement in original position/synchronize.
(6) powder processed: above-mentioned ingot casting is crushed using press machine, the coarse dust of 100 mesh or more is got rid of with sieve, is then carried out
Fine grinding, obtains the aluminum or aluminum alloy powder that -200~+500 purposes contain Al-Ti-C system intermediate alloy, beats for the 3D of Fine by Ultrasonic
Print uses metal powder.
Powder obtained above is printed on 3D printer, since the powder spread has been closed among Al-Ti-C
Gold is refined with ultrasonic activation processing, and under the fusing effect of laser beam, the components printed can refine powder
On the basis of obtain more tiny aluminium alloy crystal grain, greatly improve the mechanical property of printout.
Fig. 1 is the pure Al ingot casting macrograph of comparative example ultrasound in the present invention；Fig. 2 is that 1 ultrasound of embodiment is worked as containing Ti in the present invention
Measure the pure Al ingot casting macrograph of 25ppm；Comparison diagram 1 with Fig. 2 it can be found that in the identical situation of entire fusion process, it is whole in Fig. 2
The crystal grain distribution of a ingot casting is uniform, especially with respect to the ingot casting without ultrasonic treatment, by being ultrasonically treated ingot casting central part
The crystal grain of position is significantly more tiny, uniformly.
Comparative example:
(1) it melts parent metal: aluminium being put into crucible, and crucible is put into heat temperature raising in crucible type melting resistance furnace
To 750 DEG C, after aluminium all melts, 30min is kept the temperature, molten condition molten aluminum is obtained.
(2) it adds intermediate alloy: Al-5Ti-1C being added in molten aluminum, Ti equivalent accounts in step (1) in Al-5Ti-1C
The 25ppm of aluminum amount；After addition, mechanical stirring 8min is carried out by stirring rod.
(2) refining slagging-off: adding a certain amount of slag-cleaning agent in above-mentioned melt, removes molten surface after refining 10min
Dross,.
(5) mold: the melt after refining is slagged tap is poured into ready metal die, metal freezing, forms ingot casting；
Ingot casting in the embodiment is cut, crystal grain figure is as shown in Figure 1.
(6) powder processed: above-mentioned ingot casting is crushed using press machine, the coarse dust of 100 mesh or more is got rid of with sieve, is then carried out
Fine grinding, obtains the aluminium powder that -200~+500 purposes contain Al-Ti-C intermediate alloy, is 3D printing metal powder；
Embodiment 1
(1) it melts parent metal: aluminium being put into crucible, and crucible is put into heat temperature raising in crucible type melting resistance furnace
To 750 DEG C, after aluminium all melts, 30min is kept the temperature, molten condition molten aluminum is obtained.
(2) it adds intermediate alloy: Al-5Ti-1C being added in molten aluminum, the Ti equivalent in Al-5Ti-1C accounts for step (1)
The 25ppm of middle aluminum amount；After addition, mechanical stirring 8min is carried out by stirring rod.
(3) it is ultrasonically treated: the ultrasonic probe of Vltrasonic device being dropped to and is in contact with the liquid level of above-mentioned melt, spy is preheated to
After the temperature of head is 750 DEG C, continues decline probe and is ultrasonically treated after keeping the temperature 5min again to 10mm below melt liquid level,
The processing time is 10min.
(4) refining slagging-off: adding slag-cleaning agent in above-mentioned melt, and 1g slag-cleaning agent, refining is added in every 500g molten metal C
The dross of molten surface is removed after 10min,.
(5) it molds: the above-mentioned melt by ultrasonic treatment being poured into ready metal die, simultaneously: will be ultrasonic
The ultrasonic probe of device drop to melt liquid level hereinafter, with metal solidification, ultrasonic probe gradually moves up, during moving up
Ultrasonic wave is continued to, until metal solidifies completely, completely before solidification, ultrasonic probe forms ingot casting it is also proposed that outside metal.It should
Ingot casting in embodiment is cut, and crystal grain figure is as shown in Figure 2.
(6) powder processed: above-mentioned ingot casting is crushed using press machine, the coarse dust of 100 mesh or more is got rid of with sieve, is then carried out
Fine grinding, obtains the aluminium powder that -200~+500 purposes contain Al-Ti-C intermediate alloy, is the 3D printing metal powder of Fine by Ultrasonic
End.
Embodiment 2
(1) it melts parent metal: aluminium alloy 7075 being put into crucible, and crucible is put into crucible type melting resistance furnace
750 DEG C are heated to, after aluminium alloy 7075 all melts, 30min is kept the temperature, obtains molten condition molten aluminium alloy.
(2) it adds intermediate alloy: Al-5Ti-1C being added in molten aluminium alloy, the Ti equivalent in Al-5Ti-1C accounts for step
Suddenly in (1) aluminium alloy quality 50ppm；After addition, mechanical stirring 10min is carried out by stirring rod.
(3) it is ultrasonically treated: the ultrasonic probe of Vltrasonic device being dropped to and is in contact with the liquid level of above-mentioned melt, spy is preheated to
After the temperature of head is 750 DEG C, continues decline probe and is ultrasonically treated after keeping the temperature 5min again to 15mm below melt liquid level,
The processing time is 5min.
(4) refining slagging-off: adding slag-cleaning agent in above-mentioned melt, and 1g slag-cleaning agent, refining is added in every 500g molten metal
The dross of molten surface is removed after 10min,.
(5) it molds: the above-mentioned melt by ultrasonic treatment being poured into ready metal die, simultaneously: will be ultrasonic
The ultrasonic probe of device drop to melt liquid level hereinafter, with metal solidification, ultrasonic probe gradually moves up, during moving up
Ultrasonic wave is continued to, until metal solidifies completely, completely before solidification, ultrasonic probe forms ingot casting it is also proposed that outside metal.
(6) powder processed: above-mentioned ingot casting is crushed using press machine, the coarse dust of 100 mesh or more is got rid of with sieve, is then carried out
Fine grinding, obtains the Al alloy powder that -200~+500 purposes contain Al-Ti-C intermediate alloy, is the 3D printing gold of Fine by Ultrasonic
Belong to powder.
Embodiment 3
(1) it melts parent metal: aluminium alloy 7050 being put into crucible, and crucible is put into crucible type melting resistance furnace
750 DEG C are heated to, after aluminium alloy 7050 all melts, 30min is kept the temperature, obtains molten condition molten aluminium alloy.
(2) it adds intermediate alloy: Al-3Ti-1C being added in molten aluminium alloy, the Ti equivalent of Al-3Ti-1C accounts for step
(1) 70ppm of aluminium alloy quality in；After addition, mechanical stirring 5min is carried out by stirring rod.
(3) it is ultrasonically treated: the ultrasonic probe of Vltrasonic device being dropped to and is in contact with the liquid level of above-mentioned melt, spy is preheated to
After the temperature of head is 750 DEG C, continues decline probe and is ultrasonically treated after keeping the temperature 5min again to 12mm below melt liquid level,
The processing time is 8min.
(4) refining slagging-off: adding slag-cleaning agent in above-mentioned melt, and 1g slag-cleaning agent, refining is added in every 500g molten metal
The dross of molten surface is removed after 10min,.
(5) it molds: the above-mentioned melt by ultrasonic treatment being poured into ready metal die, simultaneously: will be ultrasonic
The ultrasonic probe of device drop to melt liquid level hereinafter, with metal solidification, ultrasonic probe gradually moves up, during moving up
Ultrasonic wave is continued to, until metal solidifies completely, completely before solidification, ultrasonic probe forms ingot casting it is also proposed that outside metal.
(6) powder processed: above-mentioned ingot casting is crushed using press machine, the coarse dust of 100 mesh or more is got rid of with sieve, is then carried out
Fine grinding, obtains the Al alloy powder that -200~+500 purposes contain Al-Ti-C intermediate alloy, is the 3D printing gold of Fine by Ultrasonic
Belong to powder.
Embodiment 4
(1) it melts parent metal: aluminium alloy 7075 being put into crucible, and crucible is put into crucible type melting resistance furnace
750 DEG C are heated to, after aluminium alloy 7075 all melts, 30min is kept the temperature, obtains molten condition molten aluminium alloy.
(2) it adds intermediate alloy: Al-3Ti-0.15C being added in molten aluminium alloy, the Ti in Al-3Ti-0.15C works as
Amount accounts for the 100ppm of aluminium alloy quality in step (1)；After addition, mechanical stirring 5min is carried out by stirring rod.
(3) it is ultrasonically treated: the ultrasonic probe of Vltrasonic device being dropped to and is in contact with the liquid level of above-mentioned melt, spy is preheated to
After the temperature of head is 750 DEG C, continues decline probe and is ultrasonically treated after keeping the temperature 5min again to 13mm below melt liquid level,
The processing time is 9min.
(4) refining slagging-off: adding slag-cleaning agent in above-mentioned melt, and 1g slag-cleaning agent, refining is added in every 500g molten metal
The dross of molten surface is removed after 10min,.
(5) it molds: the above-mentioned melt by ultrasonic treatment being poured into ready metal die, simultaneously: will be ultrasonic
The ultrasonic probe of device drop to melt liquid level hereinafter, with metal solidification, ultrasonic probe gradually moves up, during moving up
Ultrasonic wave is continued to, until metal solidifies completely, completely before solidification, ultrasonic probe forms ingot casting it is also proposed that outside metal.
(6) powder processed: above-mentioned ingot casting is crushed using press machine, the coarse dust of 100 mesh or more is got rid of with sieve, is then carried out
Fine grinding, obtains the Al alloy powder that -200~+500 purposes contain Al-Ti-C intermediate alloy, is the 3D printing gold of Fine by Ultrasonic
Belong to powder.
Embodiment 5
(1) it melts parent metal: aluminium alloy 7050 being put into crucible, and crucible is put into crucible type melting resistance furnace
750 DEG C are heated to, after aluminium alloy 7050 all melts, 30min is kept the temperature, obtains molten condition molten aluminium alloy.
(2) it adds intermediate alloy: Al-3Ti-0.15C being added in molten aluminium alloy, the Ti in Al-3Ti-0.15C works as
Amount accounts for the 150ppm of aluminium alloy quality in step (1)；After addition, mechanical stirring 10min is carried out by stirring rod.
(3) it is ultrasonically treated: the ultrasonic probe of Vltrasonic device being dropped to and is in contact with the liquid level of above-mentioned melt, spy is preheated to
After the temperature of head is 750 DEG C, continues decline probe and is ultrasonically treated after keeping the temperature 5min again to 10mm below melt liquid level,
The processing time is 7min.
(4) refining slagging-off: adding slag-cleaning agent in above-mentioned melt, and 1g slag-cleaning agent, refining is added in every 500g molten metal
The dross of molten surface is removed after 10min,.
(5) it molds: the above-mentioned melt by ultrasonic treatment being poured into ready metal die, simultaneously: will be ultrasonic
The ultrasonic probe of device drop to melt liquid level hereinafter, with metal solidification, ultrasonic probe gradually moves up, during moving up
Ultrasonic wave is continued to, until metal solidifies completely, completely before solidification, ultrasonic probe forms ingot casting it is also proposed that outside metal.
(6) powder processed: above-mentioned ingot casting is crushed using press machine, the coarse dust of 100 mesh or more is got rid of with sieve, is then carried out
Fine grinding, obtains the Al alloy powder that -200~+500 purposes contain Al-Ti-C intermediate alloy, is the 3D printing gold of Fine by Ultrasonic
Belong to powder.
Embodiment 6
(1) it melts parent metal: aluminium alloy 7075 being put into crucible, and crucible is put into crucible type melting resistance furnace
750 DEG C are heated to, after aluminium alloy 7075 all melts, 30min is kept the temperature, obtains molten condition molten aluminium alloy.
(2) it adds intermediate alloy: Al-3Ti-1C being added in molten aluminium alloy, the Ti equivalent in Al-3Ti-1C accounts for step
Suddenly in (1) aluminium alloy quality 200ppm；After addition, mechanical stirring 8min is carried out by stirring rod.
(3) it is ultrasonically treated: the ultrasonic probe of Vltrasonic device being dropped to and is in contact with the liquid level of above-mentioned melt, spy is preheated to
After the temperature of head is 750 DEG C, continues decline probe and is ultrasonically treated after keeping the temperature 5min again to 15mm below melt liquid level,
The processing time is 7min.
(4) refining slagging-off: adding slag-cleaning agent in above-mentioned melt, and 1g slag-cleaning agent, refining is added in every 500g molten metal
The dross of molten surface is removed after 10min,.
(5) it molds: the above-mentioned melt by ultrasonic treatment being poured into ready metal die, simultaneously: will be ultrasonic
The ultrasonic probe of device drop to melt liquid level hereinafter, with metal solidification, ultrasonic probe gradually moves up, during moving up
Ultrasonic wave is continued to, until metal solidifies completely, completely before solidification, ultrasonic probe forms ingot casting it is also proposed that outside metal.
(6) powder processed: above-mentioned ingot casting is crushed using press machine, the coarse dust of 100 mesh or more is got rid of with sieve, is then carried out
Fine grinding, obtains the Al alloy powder that -200~+500 purposes contain Al-Ti-C intermediate alloy, is the 3D printing gold of Fine by Ultrasonic
Belong to powder.
Embodiment 7
(1) it melts parent metal: aluminium alloy 7050 being put into crucible, and crucible is put into crucible type melting resistance furnace
750 DEG C are heated to, after aluminium alloy 7050 all melts, 30min is kept the temperature, obtains molten condition molten aluminium alloy.
(2) it adds intermediate alloy: Al-3Ti-1C being added in molten aluminium alloy, the Ti equivalent in Al-3Ti-1C accounts for step
Suddenly in (1) aluminium alloy quality 20ppm；After addition, mechanical stirring 5min is carried out by stirring rod.
(3) it is ultrasonically treated: the ultrasonic probe of Vltrasonic device being dropped to and is in contact with the liquid level of above-mentioned melt, spy is preheated to
After the temperature of head is 750 DEG C, continues decline probe and is ultrasonically treated after keeping the temperature 5min again to 13mm below melt liquid level,
The processing time is 5min.
(4) refining slagging-off: adding slag-cleaning agent in above-mentioned melt, and 1g slag-cleaning agent, refining is added in every 500g molten metal
The dross of molten surface is removed after 10min,.
(5) it molds: the above-mentioned melt by ultrasonic treatment being poured into ready metal die, simultaneously: will be ultrasonic
The ultrasonic probe of device drop to melt liquid level hereinafter, with metal solidification, ultrasonic probe gradually moves up, during moving up
Ultrasonic wave is continued to, until metal solidifies completely, completely before solidification, ultrasonic probe forms ingot casting it is also proposed that outside metal.
(6) powder processed: above-mentioned ingot casting is crushed using press machine, the coarse dust of 100 mesh or more is got rid of with sieve, is then carried out
Fine grinding, obtains the Al alloy powder that -200~+500 purposes contain Al-Ti-C intermediate alloy, is the 3D printing gold of Fine by Ultrasonic
Belong to powder.
Embodiment 8
(1) it melts parent metal: aluminium alloy 7075 being put into crucible, and crucible is put into crucible type melting resistance furnace
750 DEG C are heated to, after aluminium alloy 7075 all melts, 30min is kept the temperature, obtains molten condition molten aluminium alloy.
(2) it adds intermediate alloy: Al-5Ti-1C being added in molten aluminium alloy, the Ti equivalent in Al-5Ti-1C accounts for step
Suddenly in (1) aluminium alloy quality 200ppm；After addition, mechanical stirring 10min is carried out by stirring rod.
(3) it is ultrasonically treated: the ultrasonic probe of Vltrasonic device being dropped to and is in contact with the liquid level of above-mentioned melt, spy is preheated to
After the temperature of head is 750 DEG C, continues decline probe and is ultrasonically treated after keeping the temperature 5min again to 12mm below melt liquid level,
The processing time is 10min.
(4) refining slagging-off: adding slag-cleaning agent in above-mentioned melt, and 1g slag-cleaning agent, refining is added in every 500g molten metal
The dross of molten surface is removed after 10min,.
(5) it molds: the above-mentioned melt by ultrasonic treatment being poured into ready metal die, simultaneously: will be ultrasonic
The ultrasonic probe of device drop to melt liquid level hereinafter, with metal solidification, ultrasonic probe gradually moves up, during moving up
Ultrasonic wave is continued to, until metal solidifies completely, completely before solidification, ultrasonic probe forms ingot casting it is also proposed that outside metal.
(6) powder processed: above-mentioned ingot casting is crushed using press machine, the coarse dust of 100 mesh or more is got rid of with sieve, is then carried out
Fine grinding, obtains the Al alloy powder that -200~+500 purposes contain Al-Ti-C intermediate alloy, is the 3D printing gold of Fine by Ultrasonic
Belong to powder.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of preparation method of the 3D printing metal powder of Fine by Ultrasonic crystal grain, which comprises the following steps:
(1) aluminum or aluminum alloy is melted, the aluminum or aluminum alloy liquid of molten condition is obtained, is parent metal melt A；
(2) any one in Al-Ti-C system intermediate alloy is added in the parent metal melt A that step (1) obtains；It is added
After stir to intermediate alloy and be completely melt, obtain the parent metal melt that intermediate alloy is added, be molten metal B；
(3) it is ultrasonically treated molten metal B, obtains molten metal C；
(4) dross that surface in the molten metal C that step (3) obtain is removed by slag-cleaning agent, obtains molten metal D；
(5) molten metal D is cast in metal die, obtains ingot casting after cooling；
(6) after crushing ingot casting and refining, the aluminum or aluminum alloy powder that -200~+500 purposes contain Al-Ti-C system intermediate alloy is obtained
End is the 3D printing metal powder of Fine by Ultrasonic.
2. the preparation method of the 3D printing metal powder of Fine by Ultrasonic crystal grain according to claim 1, which is characterized in that
In step (1), the fusion temperature of aluminum or aluminum alloy is 750 DEG C, after aluminum or aluminum alloy fusing, keeps the temperature 30min, obtains parent metal
Melt A.
3. the preparation method of the 3D printing metal powder of Fine by Ultrasonic crystal grain according to claim 1, which is characterized in that
In step (2), the Ti equivalent in the Al-Ti-C system intermediate alloy of addition accounts for 20~200ppm of aluminum or aluminum alloy in step (1).
4. the preparation method of the 3D printing metal powder of Fine by Ultrasonic crystal grain according to claim 1, which is characterized in that
In step (2), intermediate alloy stirs 5~10min after being added in parent metal melt A.
5. the preparation method of the 3D printing metal powder of Fine by Ultrasonic crystal grain according to claim 1, which is characterized in that
In step (3), the detailed process of ultrasonic treatment are as follows: drop to the ultrasonic probe of Vltrasonic device above molten metal B, with metal
The liquid level of melt B contacts, and is preheated to the temperature of ultrasonic probe to 750 DEG C；Continue decline probe to below melt liquid level 10~
15mm is ultrasonically treated molten metal.
6. the preparation method of the 3D printing metal powder of Fine by Ultrasonic crystal grain according to claim 5, which is characterized in that
In step (3), 5min is kept the temperature after decline probe to 10~15mm below melt liquid level, is ultrasonically treated, sonication treatment time
For 5~10min.
7. the preparation method of the 3D printing metal powder of Fine by Ultrasonic crystal grain according to claim 1, which is characterized in that
In step (4), slag-cleaning agent is added, refines the dross on removal molten metal surface after 10min, obtains molten metal D.
8. the preparation method of the 3D printing metal powder of Fine by Ultrasonic crystal grain according to claim 1, which is characterized in that
In step (5), after molten metal D is cast in metal die, the ultrasonic probe of Vltrasonic device is dropped in the melt of mold；
With the solidification of metal liquid D, ultrasonic probe is gradually moved up, and continues to ultrasonic wave during moving up, until metal is complete
Solidification, completely before solidification, ultrasonic probe is proposed to outside ingot casting.
9. the preparation method of the 3D printing metal powder of Fine by Ultrasonic crystal grain according to claim 1, which is characterized in that
In step (6), after crushing ingot casting, the coarse dust of 100 mesh or more is got rid of with sieve；By fine grinding, -200~+500 mesh are obtained
The aluminum or aluminum alloy powder containing Al-Ti-C system intermediate alloy.
10. a kind of 3D printing metal powder for the Fine by Ultrasonic crystal grain prepared by claim 1-9 any one preparation method
End.
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