CN107999775A - Apparatus for preparing metal powder and method - Google Patents
Apparatus for preparing metal powder and method Download PDFInfo
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- CN107999775A CN107999775A CN201711321377.7A CN201711321377A CN107999775A CN 107999775 A CN107999775 A CN 107999775A CN 201711321377 A CN201711321377 A CN 201711321377A CN 107999775 A CN107999775 A CN 107999775A
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- metal powder
- gas
- atomizer
- ring
- atomisation tower
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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
- B22F9/082—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 atomising using a fluid
-
- 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
- B22F9/082—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 atomising using a fluid
- B22F2009/086—Cooling after atomisation
- B22F2009/0876—Cooling after atomisation by gas
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- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The present invention relates to a kind of apparatus for preparing metal powder, including feed arrangement, atomizer, reduction gas blowout ring and atomisation tower, the atomizer is used for jet atomization fluid, the atomizer is arranged on the lower section of the feed arrangement, the reduction gas blowout ring is used to spray reducibility gas, the reduction gas blowout ring is arranged on the lower section of the atomizer, and the atomisation tower is arranged on the lower section of the reduction gas blowout ring.The invention further relates to a kind of metal powder preparation method, comprise the following steps：Molten metal is poured into the feed arrangement, by the atomizer jet atomization fluid, reducibility gas is penetrated by the reduction gas blowout ring spray.The oxygen content of metal dust prepared by apparatus for preparing metal powder provided by the invention and method by the simple obtained metal dust of aeroponics or water fog method than reducing more than 60% originally.
Description
Technical field
The present invention relates to material increasing field, more particularly to a kind of apparatus for preparing metal powder and method.
Background technology
Increasing material manufacturing is commonly called as 3D printing, and available for the part for directly producing complicated shape, development is swift and violent in recent years, in aviation
The fields such as space flight, hygiene medical treatment, automobile, art, building are applied.
Metal dust used in metal 3D printing require good sphericity, narrow particle size distribution (size distribution 15~
Between 53 μm), the feature such as the low, good fluidity of oxygen content.However, the research relative progress of such metal dust is slow, this is researched and developed
The producer of class powder is more but is the failure to match metal 3D printing technique completely.Many producers are by metal injection molded water used
Atomized metal pow der easily occurs that flow of powder performance is poor, granulated with precinct laser or electron-beam melting equipment
The problems such as looks are irregular, shaping consistency is low, laser irradiation splashes, oxygen content value is high.Wherein, metal dust oxygen content is high asks
Topic directly affect printing after exemplar mechanical performance, therefore the metal dust of high quality low oxygen content prepare it is imperative.
At present, the method for preparing metal dust mainly has water atomization and gas atomization, its preparation process is by block, rod
After shape metal melting, molten metal is broken into by fine particle by the effect of gas/liquid piping and druming or centrifugal force etc..So
And common water atomization increases metal dust in preparation process since the metal reaction of water and high temperature generates oxide
Oxygen content, prepared oxygen content in power are reachable in more than 3000ppm, oxygen content in power prepared by antivacuum gas atomization
More than 2000ppm.The problem of metal dust oxygen content that traditional preparation methods occur is high significantly limit it in 3D printing row
The application of industry.
The content of the invention
Based on this, it is necessary to provide a kind of apparatus for preparing metal powder and method, prepared with solving traditional metal dust
The problem of metal dust oxygen content prepared by apparatus and method is high.
A kind of apparatus for preparing metal powder, including feed arrangement, atomizer, reduction gas blowout ring and atomisation tower；
The bottom of the feed arrangement is equipped with charging hole；
The atomizer is used for jet atomization fluid, and the atomizer is arranged on the lower section of the feed arrangement；
The reduction gas blowout ring is used to spray reducibility gas, and the reduction gas blowout ring is arranged under the atomizer
Side, the reduction gas blowout ring include spray ring body, and the spray ring body has the liquid-leaking nozzle passed through for molten metal, the spray ring
Gas channel is equipped with body, the gas channel includes the air cavity and outlet passageway set gradually along airflow direction, the gas
Chamber and the outlet passageway are the cyclic structure set around the liquid-leaking nozzle；
The atomisation tower has atomization inner cavity, and the both ends of the atomisation tower are respectively equipped with atomisation tower entrance and atomisation tower goes out
Mouthful, the atomisation tower is arranged on the lower section of the reduction gas blowout ring, and the feed arrangement passes through the atomisation tower entrance, the mist
Change nozzle, the liquid-leaking nozzle and the atomisation tower entrance to connect with the atomization inner cavity.
In one of the embodiments, the air cavity gradually narrows the rear and outlet close to the side of the outlet passageway
Passage connects, and the opening width of the outlet passageway towards the outlet side of the liquid-leaking nozzle gradually increases.
In one of the embodiments, the opening width at the most narrow place of the outlet passageway is 1mm~2mm.
In one of the embodiments, the gas outlet of the atomizer with it is described reduction gas blowout ring gas outlet vertical
Distance on direction is 10mm~40mm.
In one of the embodiments, the liquid-leaking nozzle is included under the through hole top and through hole that set gradually along feedstock direction
Portion, the internal diameter of the through hole lower part are not less than the internal diameter on the through hole top.
In one of the embodiments, the internal diameter of the through hole lower part gradually expands along feedstock direction.
In one of the embodiments, the internal diameter on the through hole top is 40mm~120mm, the internal diameter of the through hole lower part
For 40mm~180mm.
In one of the embodiments, above-mentioned apparatus for preparing metal powder further includes collection device, the collection device with
The atomisation tower outlet of the atomisation tower.
A kind of metal powder preparation method using the apparatus for preparing metal powder, comprises the following steps：
Molten metal is poured into the feed arrangement；By the atomizer jet atomization fluid, pass through the reduction
Gas blowout ring spray penetrates reducibility gas；
The admission pressure of the reducibility gas is 0.3MPa~4.0MPa；
The volume of the reducibility gas and the mass ratio of the molten metal are 5cm3/ kg~60cm3/kg。
In one of the embodiments, the admission pressure of the reducibility gas is 1.5MPa~2.5MPa；And/or
The volume of the reducibility gas and the mass ratio of the molten metal are 25cm3/ kg~40cm3/kg。
Compared with prior art, the invention has the advantages that：
Apparatus for preparing metal powder provided by the invention and method, by being sprayed into also in metal dust atomization manufacturing process
Originality gas, metal melting liquid flows through the atomizer of lower section by the inlet opening of feed arrangement, in gases at high pressure or liquid
Strike under metal melting liquid be broken into droplet, droplet reduces gas blowout ring spray in gravity continues folding process
Metal powder surface oxide is reduced to metal by the reducibility gas penetrated so that the oxygen content of the metal dust of preparation is than original
More than 60% is reduced by the simple obtained metal dust of aeroponics or water fog method.
In addition, the metal dust prepared by apparatus for preparing metal powder provided by the invention and method be not required it is secondary to powder
End is post-processed or thermal reduction processing, saves rear process, has saved cost.Moreover, metal dust prepared by this method
If as foundry returns in use, many refining oxygen removal process can be saved.
Brief description of the drawings
Fig. 1 is the structure diagram of the apparatus for preparing metal powder of an embodiment；
Fig. 2 is the structure diagram of the reduction gas blowout ring of an embodiment；
Fig. 3 is the structure diagram of the reduction gas blowout ring of another embodiment.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In attached drawing
Give presently preferred embodiments of the present invention.But the present invention can realize in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more thorough
Comprehensively.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The normally understood implication of technical staff is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more phases
The arbitrary and all combination of the Listed Items of pass.
Incorporated by reference to Fig. 1~Fig. 3, the apparatus for preparing metal powder 100 of an embodiment, including feed arrangement 110, atomization spray
Mouth 120, reduction gas blowout ring 130 and atomisation tower 140.
Wherein, feed arrangement 110 is used to accept metal melting liquid, and the bottom of feed arrangement 110 is equipped with charging hole and (schemes not
Show), molten metal is flowed into inside apparatus for preparing metal powder 100 by charging hole and is atomized.
Atomizer 120 is used for jet atomization fluid, and atomizer 120 is arranged on the lower section of feed arrangement 110.
Reduction gas blowout ring 130 is used to spray reducibility gas, and reduction gas blowout ring 130 is arranged on the lower section of atomizer 120.
Reduction gas blowout ring 130 includes spray ring body 132, and spray ring body 132 has the liquid-leaking nozzle 134 passed through for molten metal.Spray ring sheet
Gas channel 136 is equipped with body 132, gas channel 136 includes the air cavity 1364 and outlet passageway set gradually along airflow direction
1366, air cavity 1364 and outlet passageway 1366 are the cyclic structure set around liquid-leaking nozzle 134.
Atomisation tower 140 has atomization inner cavity 142, and the both ends of atomisation tower 140 are respectively equipped with atomisation tower entrance 144 and atomisation tower
Outlet 146, atomisation tower 140 are arranged on the lower section of reduction gas blowout ring 130.Feed arrangement 110 passes through atomisation tower entrance 144, atomization
Nozzle 120, liquid-leaking nozzle 134 and atomisation tower entrance 144 are connected with atomization inner cavity 142.
Above-mentioned apparatus for preparing metal powder 100 distinguishes jet atomization fluid and reducibility gas by two nozzles, can
So that reducibility gas is able to efficiently utilize and obtain good reduction effect.
In an optional embodiment, gas channel 136 further includes inlet channel 1362, and gas channel 136 is linear
Bore, one end are connected with air cavity 1364, and the other end is used to connect with the air feed equipment of peripheral hardware.
In an optional embodiment, air cavity 1364 is gradually narrowed close to the side of outlet passageway 1366 to be led to outlet afterwards
Road 1366 connects, and the opening width of outlet passageway 1366 towards the outlet side of liquid-leaking nozzle 134 gradually increases.In this way, gas channel
136 form widened structure after an opening width first narrows, so that, gas channel 136 can be to the reducibility gas of process
Pressurizeed and make reducibility gas accelerate to spray.Further, in an optional embodiment, outlet passageway 1366 it is most narrow
The opening width at place is 1mm~2mm.Width is too big, and reducibility gas injection pressure is too small, and metal powder reduction effect is poor, wide
Degree is too small, 130 shaping not easy to be processed of reduction gas blowout ring, and too small width causes gas flow insufficient, reduction effect is deteriorated.
In a specific embodiment, the opening width at the most narrow place of outlet passageway 1366 is 1.5mm.
In an optional embodiment, the gas outlet of atomizer 120 is with reducing the gas outlet of gas blowout ring 130 vertical
Distance on direction is 10mm~40mm, and under the distance range, being reduced property gas is also under semi-cured state for molten drop
Effect former and that preferably reduction oxygen content in power can be obtained.Further, in an optional embodiment, atomizer
120 gas outlet is 20mm~30mm with reducing the distance of the gas outlet of gas blowout ring 130 in vertical direction.It is specific at one
In embodiment, distance of the gas outlet of atomizer 120 with the gas outlet of reduction gas blowout ring 130 in vertical direction is 26mm.
Liquid-leaking nozzle 134 includes the through hole top 1342 and through hole lower part 1344 set gradually along feedstock direction, can at one
In the embodiment of choosing, the internal diameter of through hole lower part 1344 is not less than the internal diameter on through hole top 1342.Compared to aerosolization method, using
When water atomization process prepares metal dust, since water atomization pressure is big, the included spray angle of formation is larger, sets through hole lower part 1344
Diameter be more than through hole top 1342 diameter, be conducive to molten drop better by reduction gas blowout ring 130 and fall into atomization
So as to promote reduction effect in inner cavity 142.Further, in an optional embodiment, the internal diameter of through hole lower part 1344 along into
Material direction gradually expands.Further, alternatively, the internal diameter on through hole top 1342 is 40mm~120mm, the through hole lower part 1344
Internal diameter be 40mm~180mm.Further, in an optional embodiment, the internal diameter on through hole top 1342 for 50mm~
80mm, the internal diameter of the through hole lower part 1344 is 50mm~100mm.In a specific embodiment, through hole top 1342
Internal diameter is 55mm, and the internal diameter of the through hole lower part 1344 is 76mm.
In an optional embodiment, apparatus for preparing metal powder 100 further includes collection device 150, is made for collecting
The metal dust obtained, collection device 150 are connected with the atomisation tower outlet 146 of atomisation tower 140.Further, it is optional real at one
Apply in example, apparatus for preparing metal powder 100 further includes discharge valve 160, discharge valve 160 be arranged on atomisation tower outlet 146 with
Between collection device 150.Further, in an optional embodiment, handle 162 is provided with discharge valve 160.
In an optional embodiment, the bottom of collection device 150 is provided with roller 152, facilitates metal dust to prepare
The movement of device 100.
In an optional embodiment, apparatus for preparing metal powder 100 further includes exhaust fan 170, the pumping of exhaust fan 170
Air port is connected with atomization inner cavity 142, and exhaust fan 170 is used to extract the gas for being atomized inner cavity 142 out after the completion of preparation, including not
The reducibility gas of reaction.Further, in an optional embodiment, exhaust fan 170 is equipped with igniting outlet 172.
In an optional embodiment, apparatus for preparing metal powder 100 further includes atomizing fluids conduit 180 and also Primordial Qi
Conduit 190, atomizing fluids conduit 180 connect (not shown) to import the gas for atomization with the fluid passage of atomizer 120
Body or liquid, reduction airway 190 are connected to import reducibility gas with reducing the gas channel 136 of gas blowout ring 130.
Further, present embodiment also provides a kind of metal powder preparation method using apparatus for preparing metal powder 100,
This method comprises the following steps：
Molten metal liquation is poured into feed arrangement 110；Pass through 120 jet atomization gas of atomizer or atomized liquid
Body, sprays reducibility gas by reducing gas blowout ring 130；
The admission pressure of reducibility gas is 0.3~4.0MPa；
The volume of reducibility gas and the mass ratio of molten metal are 5~60cm3/kg。
In an optional embodiment, the admission pressure of reducibility gas is 1.5~2.5MPa.
In an optional embodiment, the volume of reducibility gas and the mass ratio of molten metal are 25~40cm3/
kg。
Embodiment 1
High pressure nitrogen atomization prepares cobalt chrome molybdenum tungsten alloy metal dust
The cobalt chrome molybdenum tungsten alloy melt liquid that smelting temperature is 1650 DEG C is poured into the charging of apparatus for preparing metal powder 100
In device 110, high pressure nitrogen is sprayed by atomizer 120 and is atomized, gone back by reducing the injection hydrogen of gas blowout ring 130
It is former.Wherein, the admission pressure of hydrogen is 0.3MPa, and the volume of hydrogen and the mass ratio of molten metal are 60cm3/kg.Through inspection
Survey, obtained cobalt chrome molybdenum tungsten alloy metal dust oxygen content is 985ppm.
It is atomized in addition, only spraying high pressure nitrogen by atomizer 120, not by reducing the injection of gas blowout ring 130 also
Originality gas is reduced, and under the same terms, the oxygen content of obtained cobalt chrome molybdenum tungsten alloy metal dust is 2600ppm.
Embodiment 2
High pressure nitrogen atomization prepares cobalt chrome molybdenum tungsten alloy metal dust
The cobalt chrome molybdenum tungsten alloy melt liquid that smelting temperature is 1650 DEG C is poured into the charging of apparatus for preparing metal powder 100
In device 110, high pressure nitrogen is sprayed by atomizer 120 and is atomized, gone back by reducing the injection hydrogen of gas blowout ring 130
It is former.Wherein, the admission pressure of hydrogen is 2.5MPa, and the volume of hydrogen and the mass ratio of molten metal are 25cm3/kg.Through inspection
Survey, obtained cobalt chrome molybdenum tungsten alloy metal dust oxygen content is 910ppm.
Embodiment 3
High pressure nitrogen atomization prepares HPM31 mould steel metal dusts
The HPM31 mould steel melt liquids that smelting temperature is 1650 DEG C are poured into the charging of apparatus for preparing metal powder 100
In device 110, by atomizer 120 spray high pressure nitrogen be atomized, by reduce gas blowout ring 130 spray carbon monoxide into
Row reduction.Wherein, the admission pressure of carbon monoxide is 2.15MPa, and the volume of carbon monoxide and the mass ratio of molten metal are
32.5cm3/kg.After testing, the oxygen content of obtained HPM31 mould steel metal dust is 750ppm.
It is atomized in addition, only spraying high pressure nitrogen by atomizer 120, not by reducing the injection of gas blowout ring 130 also
Originality gas is reduced, and under the same terms, the oxygen content of obtained HPM31 mould steel metal dusts is 2400ppm.
Embodiment 4
Water atomization prepares 316L alloyed metal powders
The 316L alloy molten liquid that smelting temperature is 1620 DEG C is poured into the feed arrangement of apparatus for preparing metal powder 100
In 110, high pressure nitrogen is sprayed by atomizer 120 and is atomized, reduced by reducing the injection hydrogen of gas blowout ring 130.
Wherein, the admission pressure of hydrogen is 4.0MPa, and the volume of hydrogen and the mass ratio of molten metal are 5cm3/kg.After testing, make
The cobalt chrome molybdenum tungsten alloy metal dust oxygen content obtained is 1500ppm.
It is atomized in addition, only spraying high pressure nitrogen by atomizer 120, not by reducing the injection of gas blowout ring 130 also
Originality gas is reduced, and under the same terms, the oxygen content of obtained 316L alloyed metal powders is 3900ppm.
Embodiment 5
Water atomization prepares 316L alloyed metal powders
The 316L alloy molten liquid that smelting temperature is 1620 DEG C is poured into the feed arrangement of apparatus for preparing metal powder 100
In 110, high pressure nitrogen is sprayed by atomizer 120 and is atomized, reduced by reducing the injection hydrogen of gas blowout ring 130.
Wherein, the admission pressure of hydrogen is 1.5MPa, and the volume of hydrogen and the mass ratio of molten metal are 40cm3/kg.After testing,
Obtained 316L alloyed metal powders oxygen content is 1300ppm.
Apparatus for preparing metal powder 100 and metal powder preparation method provided by the invention, by being atomized in metal dust
Reducibility gas is sprayed into preparation process, the atomization that metal melting liquid flows through lower section by the inlet opening of feed arrangement 110 is sprayed
Mouth 120, metal melting liquid is broken into droplet under the strike of gases at high pressure or liquid, and droplet is in the case where gravity continues
During shifting, metal powder surface oxide is reduced to metal by the reducibility gas of 130 injection of reduction gas blowout ring so that is prepared
Metal dust oxygen content than reducing 60% by the simple obtained metal dust of aeroponics or water fog method originally
More than.
In addition, apparatus for preparing metal powder 100 provided by the invention and the metal powder prepared by metal powder preparation method
End be not required it is secondary powder is post-processed or thermal reduction processing, save rear process, saved cost.It is moreover, our
If metal dust prepared by method is as foundry returns in use, many refining oxygen removal process can be saved.
Each technical characteristic of above example can be combined arbitrarily, to make description succinct, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, lance is not present in the combination of these technical characteristics
Shield, is all considered to be the scope of this specification record.
Above example only expresses the several embodiments of the present invention, its description is more specific and detailed, but can not
Therefore it is construed as limiting the scope of the patent.It should be pointed out that for those of ordinary skill in the art,
On the premise of not departing from present inventive concept, various modifications and improvements can be made, these belong to protection scope of the present invention.
Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of apparatus for preparing metal powder, it is characterised in that including feed arrangement, atomizer, reduction gas blowout ring and atomization
Tower；
The bottom of the feed arrangement is equipped with charging hole；
The atomizer is used for jet atomization fluid, and the atomizer is arranged on the lower section of the feed arrangement；
The reduction gas blowout ring is used to spray reducibility gas, and the reduction gas blowout ring is arranged on the lower section of the atomizer,
The reduction gas blowout ring includes spray ring body, and the spray ring body has the liquid-leaking nozzle passed through for molten metal, the spray ring sheet
Gas channel is equipped with vivo, and the gas channel includes the air cavity and outlet passageway set gradually along airflow direction, the air cavity
And the outlet passageway is the cyclic structure set around the liquid-leaking nozzle；
The atomisation tower has atomization inner cavity, and the both ends of the atomisation tower are respectively equipped with atomisation tower entrance and atomisation tower outlet, institute
The lower section that atomisation tower is arranged on the reduction gas blowout ring is stated, the feed arrangement is sprayed by the atomisation tower entrance, the atomization
Mouth, the liquid-leaking nozzle and the atomisation tower entrance are connected with the atomization inner cavity.
2. apparatus for preparing metal powder as claimed in claim 1, it is characterised in that the air cavity is close to the outlet passageway
Side connects after gradually narrowing with the outlet passageway, opening width of the outlet passageway towards the outlet side of the liquid-leaking nozzle
Gradually increase.
3. apparatus for preparing metal powder as claimed in claim 2, it is characterised in that the opening at the most narrow place of the outlet passageway
Width is 1mm~2mm.
4. apparatus for preparing metal powder as claimed in claim 1, it is characterised in that the gas outlet of the atomizer with it is described
It is 10mm~40mm to reduce the distance of the gas outlet of gas blowout ring in vertical direction.
5. apparatus for preparing metal powder as claimed in claim 1, it is characterised in that the liquid-leaking nozzle include along feedstock direction according to
The through hole top and through hole lower part of secondary setting, the internal diameter of the through hole lower part are not less than the internal diameter on the through hole top.
6. apparatus for preparing metal powder as claimed in claim 5, it is characterised in that the internal diameter edge charging side of the through hole lower part
Expand to gradual.
7. apparatus for preparing metal powder as claimed in claim 5, it is characterised in that the internal diameter on the through hole top for 40mm~
120mm, the internal diameter of the through hole lower part is 40mm~180mm.
8. such as claim 1~7 any one of them apparatus for preparing metal powder, it is characterised in that further include collection device, institute
State the atomisation tower outlet of collection device and the atomisation tower.
9. a kind of metal powder preparation method, it is characterised in that using such as claim 1~8 any one of them metal dust
Preparation facilities, the metal powder preparation method comprise the following steps：
Molten metal is poured into the feed arrangement；By the atomizer jet atomization fluid, pass through the reduction gas blowout
Ring spray penetrates reducibility gas；
The admission pressure of the reducibility gas is 0.3MPa~4.0MPa；
The volume of the reducibility gas and the mass ratio of the molten metal are 5cm3/ kg~60cm3/kg。
10. metal powder preparation method as claimed in claim 9, it is characterised in that the admission pressure of the reducibility gas
For 1.5MPa~2.5MPa；And/or
The volume of the reducibility gas and the mass ratio of the molten metal are 25cm3/ kg~40cm3/kg。
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| CN201711321377.7A CN107999775B (en) | 2017-12-12 | 2017-12-12 | Metal powder preparation device and method |
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| CN201711321377.7A CN107999775B (en) | 2017-12-12 | 2017-12-12 | Metal powder preparation device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848429A (en) * | 2019-03-05 | 2019-06-07 | 香港生产力促进局 | A combined device for preparing spherical metal powder by gas atomization |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB559049A (en) * | 1942-04-30 | 1944-02-02 | Telephone Mfg Co Ltd | Improvements in and relating to the reduction of metals to powdered or granular form |
| GB712699A (en) * | 1952-07-13 | 1954-07-28 | Glacier Co Ltd | Improvements in or relating to the manufacture of metallic powders |
| CH625729A5 (en) * | 1977-07-19 | 1981-10-15 | Larson Rutger Konsult Ab | Method and apparatus for the production of metal powder |
| CN1174108A (en) * | 1996-08-20 | 1998-02-25 | 中国科学院金属研究所 | Atomization process of metal and alloy powder |
| JP2000104103A (en) * | 1998-09-29 | 2000-04-11 | Kawasaki Steel Corp | Method and apparatus for manufacturing metal powder |
| CN103846447A (en) * | 2012-12-06 | 2014-06-11 | 北京有色金属研究总院 | Gas atomization preparation method of fine spherical titanium or titanium alloy powder |
| CN106378461A (en) * | 2016-11-21 | 2017-02-08 | 华南理工大学 | Double-nozzle atomizing device and method for preparing 3D printing spherical metal powder |
| JP2017145442A (en) * | 2016-02-16 | 2017-08-24 | ハード工業有限会社 | Metal powder production device |
| CN207806632U (en) * | 2017-12-12 | 2018-09-04 | 广州纳联材料科技有限公司 | Apparatus for preparing metal powder |
-
2017
- 2017-12-12 CN CN201711321377.7A patent/CN107999775B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB559049A (en) * | 1942-04-30 | 1944-02-02 | Telephone Mfg Co Ltd | Improvements in and relating to the reduction of metals to powdered or granular form |
| GB712699A (en) * | 1952-07-13 | 1954-07-28 | Glacier Co Ltd | Improvements in or relating to the manufacture of metallic powders |
| CH625729A5 (en) * | 1977-07-19 | 1981-10-15 | Larson Rutger Konsult Ab | Method and apparatus for the production of metal powder |
| CN1174108A (en) * | 1996-08-20 | 1998-02-25 | 中国科学院金属研究所 | Atomization process of metal and alloy powder |
| JP2000104103A (en) * | 1998-09-29 | 2000-04-11 | Kawasaki Steel Corp | Method and apparatus for manufacturing metal powder |
| CN103846447A (en) * | 2012-12-06 | 2014-06-11 | 北京有色金属研究总院 | Gas atomization preparation method of fine spherical titanium or titanium alloy powder |
| JP2017145442A (en) * | 2016-02-16 | 2017-08-24 | ハード工業有限会社 | Metal powder production device |
| CN106378461A (en) * | 2016-11-21 | 2017-02-08 | 华南理工大学 | Double-nozzle atomizing device and method for preparing 3D printing spherical metal powder |
| CN207806632U (en) * | 2017-12-12 | 2018-09-04 | 广州纳联材料科技有限公司 | Apparatus for preparing metal powder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848429A (en) * | 2019-03-05 | 2019-06-07 | 香港生产力促进局 | A combined device for preparing spherical metal powder by gas atomization |
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| CN107999775B (en) | 2024-08-06 |
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