CN108994308B - A kind of preparation method of low-apparent-density atomization nickel powder - Google Patents
A kind of preparation method of low-apparent-density atomization nickel powder Download PDFInfo
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- CN108994308B CN108994308B CN201810887603.6A CN201810887603A CN108994308B CN 108994308 B CN108994308 B CN 108994308B CN 201810887603 A CN201810887603 A CN 201810887603A CN 108994308 B CN108994308 B CN 108994308B
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 238000000889 atomisation Methods 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000001301 oxygen Substances 0.000 claims abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 7
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 72
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 42
- 235000006408 oxalic acid Nutrition 0.000 claims description 24
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 239000003610 charcoal Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 238000007788 roughening Methods 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 238000005915 ammonolysis reaction Methods 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000001238 wet grinding Methods 0.000 claims description 3
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 235000008331 Pinus X rigitaeda Nutrition 0.000 abstract description 3
- 235000011613 Pinus brutia Nutrition 0.000 abstract description 3
- 241000018646 Pinus brutia Species 0.000 abstract description 3
- 238000009692 water atomization Methods 0.000 abstract description 3
- 229910003460 diamond Inorganic materials 0.000 abstract description 2
- 239000010432 diamond Substances 0.000 abstract description 2
- 230000000505 pernicious effect Effects 0.000 abstract description 2
- 238000004663 powder metallurgy Methods 0.000 abstract description 2
- 239000000843 powder Substances 0.000 description 9
- 238000012216 screening Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000004482 other powder Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- QXDMQSPYEZFLGF-UHFFFAOYSA-L calcium oxalate Chemical compound [Ca+2].[O-]C(=O)C([O-])=O QXDMQSPYEZFLGF-UHFFFAOYSA-L 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000007524 organic acids Chemical group 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/145—Chemical treatment, e.g. passivation or decarburisation
-
- 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
- B22F2009/0824—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 with a specific atomising 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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
Abstract
The invention discloses a kind of preparation method of low-apparent-density atomization nickel powder, the atomization nickel powder of this method production, apparent density 2.0-2.2g/cm3, granularity D50 is at 8-10 microns, and nickel content is greater than 99.7%, and oxygen content is less than 0.3%.It is filled with domestic market water atomization nickel powder pine close generally in 3.5-4.0 g/cm3It compares, apparent density reduces 1.5-1.8 g/cm3, the present invention overcomes the nickel powder apparent density height of traditional atomization process production, the disadvantages of formability difference；Present invention process process is short, production cost is low, generates without pernicious gas；Product can be widely used for powder metallurgy mechanical parts, diamond tool, conducting resinl industry.
Description
Technical field
The invention belongs to field of metallurgy, are related to nickel powder, in particular to a kind of preparation method of low-apparent-density atomization nickel powder.
Background technique
Although being atomized legal system powder has that process is short, production cost is low, the advantages such as environmentally friendly, the nickel powder particle that atomization is produced
Pattern irregular shape, surface is smooth, and product apparent density is excessive, typically greater than 3.5g/cm3, powder forming is poor, with it is other
After powder mixes powder, it is segregated transport, compacting, charging process are all different degrees of, influences using effect.
Summary of the invention
The purpose of the present invention is to problems of the prior art, a kind of low-apparent-density atomization nickel powder is provided
Preparation method.
Technical solution of the present invention is as follows: a kind of preparation method of low-apparent-density atomization nickel powder, specific to wrap
Include following steps:
Step a is melted sheet nickel using mid-frequency melting furnace, using charcoal deoxidation, when melt temperature is up to 1650 DEG C,
Start to be atomized, atomization condition: atomizing medium is the oxalic acid solution of 8-10g/L, and 1650 DEG C of atomization temperature, protective gas argon gas leaks
Eyelet diameter 4.0mm is atomized hydraulic pressure 80Mpa；
Nickel powder after step b atomization is separated by solid-liquid separation through filters pressing, and the nickel powder after being filtered dry is added in the container of stainless steel directly
It is mixed evenly with mass percent for the industrial acetic acid of 36-38%, nickel powder and industrial acetic acid mass ratio are 20:1, and container adds
Lid sealing 90-120 minutes, makes nickel powder surface roughening；
Step c opens container, will be mixed with wet-milling dry reduction in drying, reduction all-in-one oven of acetic acid, dryer section temperature
300 DEG C of degree, 300-450 DEG C of reduction section temperature, dry, recovery time 2.5-3.0 hour；
Step d. is broken to be broken up, sieves, and apparent density 2.0-2.2g/cm is both obtained3, at 8-10 microns, nickel contains granularity D50
Amount is greater than 99.7%, the atomization nickel powder of low-apparent-density of the oxygen content less than 0.3%.
Preferably, sheet nickel is melted using mid-frequency melting furnace in step a, using wood when temperature reaches 1580 DEG C
Charcoal deoxidation.
Preferably, the oxalic acid solution of atomizing medium 8-10g/L is prepared using industrial pure water in step a.
Further, in step a, atomizing medium oxalic acid solution is recycled, and atomization ensures oxalic acid content in 8- every time
Within the scope of 10g/L.
Further, in step c, reducing atmosphere is nitrogen, the hydrogen mixed gas after ammonolysis craft.
Preferably, in step c, 300 DEG C of dryer section temperature, 350 DEG C -400 DEG C of reduction section temperature.
Compared with the prior art, the advantages of the present invention are as follows:
Atomization process of the invention has argon gas protection, and atomizing medium is the oxalic acid solution of low concentration, it is ensured that atomization process
Nickel surface No oxided film generate, for acetic acid be roughened powder surface create conditions and modified with organic acids be atomized nickel powder premise；Match
The atomized water that oxalic acid processed uses prevents calcium ions and magnesium ions content height in water from causing calcium oxalate precipitation, influences into quality for industrial pure water
Amount.For the present invention using acetic acid roughening Fine Nickel Powder surface, advantage is that the nickel powder after impregnating without washing, is directly entered dry go back
Former all-in-one oven, non-wastewater discharge；The present invention enters high temperature reduction, and residue is decomposed into carbon dioxide and water vapour, to product and
Environment is pollution-free.The fine low-apparent-density nickel powder for the water atomization technique production that the present invention uses, apparent density 2.0-
2.2g/cm3, granularity D50 is at 8-10 microns, and nickel content is greater than 99.7%, and oxygen content is less than 0.3%.Powder forming is good, the present invention
Generally existing pine fills close 3.5-4.0 g/cm with existing market3Water atomization nickel powder compare, nickel powder of the invention and other powder
Be not in segregation in transport, compacting, charging process after the mixed powder in end, overcome the nickel powder pine dress of traditional atomization process production
Density is high, and formability is poor, mixes the problem of being easily segregated after powder with other powder.The atomization nickel produced using technique of the invention
Powder reduces apparent density, and process flow is short, production cost is low, generates without pernicious gas, and product can be satisfied with powder metallurgy
Component of machine, diamond tool, conducting resinl industry use, and that widens atomization nickel powder uses field.
Specific embodiment
A kind of production method of low-apparent-density atomization nickel powder, specifically includes the following steps:
Step a. is melted sheet nickel using mid-frequency melting furnace, using charcoal deoxidation when temperature reaches 1580 DEG C；
The preparation of step b. oxalic acid solution: dosage is that every cubic meter of water adds 8-10 kilograms of oxalic acid, is slowly uniformly added into band and stirs
It mixes in tank, guarantees that oxalic acid sufficiently dissolves, above-mentioned prepared using industrial pure water ensures the oxalic acid content prepared in 8-10g/L range
It is interior；
Step c. atomization: when nickel melt temperature starts to be atomized up to 1650 DEG C in furnace, atomization technique condition: atomizing medium is
The solution of the 8-10g/L containing oxalic acid, 1650 DEG C of atomization temperature, protective gas argon gas leaks eyelet diameter 4.0mm, and (leakage eye is by high temperature nickel
Liquid stream enters the diversion pipe of atomizer, and pore size influences powder size composition very big) atomization hydraulic pressure 80Mpa.
Step d. nickel powder roughing in surface: the nickel powder after atomization is separated by solid-liquid separation through filters pressing, and nickel powder is packed into stainless steel
The industrial acetic acid for being directly 36% with mass content in cylinder mixes, and the mass ratio of nickel powder and industrial acetic acid is 20:1, is stirred
Capping, Sealing period are not less than 1.5 hours after even, make nickel powder surface roughening；
Step e. opens cylinder, and the wet-milling that acetic acid is mixed in cylinder is taken out, and is added directly into the dry reduction all-in-one oven of steel band
Reduction, is dried, restores, reduction technique condition are as follows:
Reducing atmosphere: for nitrogen, the hydrogen mixed gas after ammonolysis craft；
Dryer section temperature: 300 DEG C
Reduction section temperature: 300-450 DEG C
Dry, recovery time 2.5-3.0 hour
Step f. is broken to be broken up, crosses the screening of 300 meshes to get low-apparent-density atomization nickel powder of the invention is arrived.Broken,
Screening process should try to control crushing temperature, prevent thermal oxide, cause oxygen content higher, once oxidation oxygen content is exceeded, need
It to restore, but product apparent density be influenced little again.
Low-apparent-density obtained above is atomized nickel powder: apparent density 2.0-2.2g/cm3, granularity D50 at 8-10 microns,
Nickel content is greater than 99.7%, the atomization nickel powder of low-apparent-density of the oxygen content less than 0.3%.
Embodiment 1
A kind of production method of low-apparent-density atomization nickel powder, specifically includes the following steps:
Intermediate frequency furnace fusing, heating, deoxidation is added in the blocky electrolytic nickel of step a) .100 kilogram；
The preparation of step b) oxalic acid solution: atomization oxalic acid solution medium, oxalic acid solution mass concentration 9.5g/L are prepared；
Step c) atomization: atomizing pressure 80MPa, leaks eyelet through 4.0mm by 1650 DEG C of atomization temperature；
Step d) nickel powder roughing in surface: the nickel powder after atomization is separated by solid-liquid separation through filters pressing, uses mass percent for 36%
Industrial acetic acid, nickel powder and sour mass ratio 20:1, after being uniformly mixed, the sealed soak time 100 minutes；
Step e) is dry, reduction, is crushed, screening, 300 DEG C of drying temperature, 450 DEG C of reduction temperature, the dry recovery time
3.0 hour；300 meshes are crossed after broken, lower sieve is required product.
Technical target of the product is as shown in table 1,
1. low-apparent-density of table is atomized nickel powder the key technical indexes.
Embodiment 2
A kind of production method of low-apparent-density atomization nickel powder, specifically includes the following steps:
Intermediate frequency furnace fusing, heating, deoxidation is added in the blocky electrolytic nickel of step a) .100 kilogram；
The preparation of step b) oxalic acid solution: atomization oxalic acid solution medium, oxalic acid solution mass concentration 9.8g/L are prepared；
Step c) atomization: atomizing pressure 80MPa, leaks eyelet through 4.0mm by 1650 DEG C of atomization temperature；
Step d) nickel powder roughing in surface: the nickel powder after atomization is separated by solid-liquid separation through filters pressing, uses mass percent for 36%
Industrial acetic acid, nickel powder and sour mass ratio 20:1, after being uniformly mixed, the sealed soak time 110 minutes；
Step e) is dry, reduction, is crushed, screening, 300 DEG C of drying temperature, 450 DEG C of reduction temperature, the dry recovery time
3.0 hour；300 meshes are crossed after broken, lower sieve is required product.
Technical target of the product is as shown in table 2,
2. low-apparent-density of table is atomized nickel powder the key technical indexes.
Embodiment 3
A kind of production method of low-apparent-density atomization nickel powder, specifically includes the following steps:
Intermediate frequency furnace fusing, heating, deoxidation is added in the blocky electrolytic nickel of step a) .100 kilogram；
The preparation of step b) oxalic acid solution: atomization oxalic acid solution medium, oxalic acid solution mass concentration 10g/L are prepared；
Step c) atomization: atomizing pressure 80MPa, leaks eyelet through 4.0mm by 1650 DEG C of atomization temperature；
Step d) nickel powder roughing in surface: the nickel powder after atomization is separated by solid-liquid separation through filters pressing, uses mass percent for 36%
Industrial acetic acid, nickel powder and sour mass ratio 20:1, after being uniformly mixed, the sealed soak time 120 minutes；
Step e) is dry, reduction, is crushed, screening, 300 DEG C of drying temperature, 450 DEG C of reduction temperature, the dry, recovery time
3.0 hour；300 meshes are crossed after broken, lower sieve is required product.
Technical target of the product is as shown in table 3,
3. low-apparent-density of table is atomized nickel powder the key technical indexes.
。
Claims (5)
1. a kind of preparation method of low-apparent-density atomization nickel powder, it is characterised in that: specifically includes the following steps:
Step a is melted sheet nickel using mid-frequency melting furnace, using charcoal deoxidation, when melt temperature is up to 1650 DEG C, is started
Atomization, atomization condition: atomizing medium is the oxalic acid solution of 8-10g/L, and 1650 DEG C of atomization temperature, protective gas argon gas leaks eyelet
Diameter 4.0mm is atomized hydraulic pressure 80Mpa；The oxalic acid solution of atomizing medium 8-10g/L is prepared using industrial pure water；
Nickel powder after step b atomization is separated by solid-liquid separation through filters pressing, and nickel powder after being filtered dry is added in the container of stainless steel directly and matter
The industrial acetic acid that amount percentage is 36-38% is mixed evenly, and nickel powder and industrial acetic acid mass ratio are 20:1, and container covers close
Envelope 90-120 minutes, makes nickel powder surface roughening；
Step c opens container, will be mixed with wet-milling dry reduction in drying, reduction all-in-one oven of acetic acid, dryer section temperature 300
DEG C, 300-450 DEG C of reduction section temperature, dry, recovery time 2.5-3.0 hour；
Step d. is broken to be broken up, sieves, and apparent density 2.0-2.2g/cm is both obtained3, at 8-10 microns, nickel content is greater than granularity D50
99.7%, the atomization nickel powder of low-apparent-density of the oxygen content less than 0.3%.
2. a kind of preparation method of low-apparent-density atomization nickel powder according to claim 1, it is characterised in that: in step a,
Sheet nickel is melted using mid-frequency melting furnace, using charcoal deoxidation when temperature reaches 1580 DEG C.
3. a kind of preparation method of low-apparent-density atomization nickel powder according to claim 1, it is characterised in that: in step a,
Atomizing medium oxalic acid solution recycles, and atomization ensures oxalic acid content within the scope of 8-10g/L every time.
4. a kind of preparation method of low-apparent-density atomization nickel powder according to claim 1, it is characterised in that: in step c,
Reducing atmosphere is nitrogen, the hydrogen mixed gas after ammonolysis craft.
5. a kind of preparation method of low-apparent-density atomization nickel powder according to claim 1, it is characterised in that: in step c,
300 DEG C of dryer section temperature, 350 DEG C -400 DEG C of reduction section temperature.
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| CN201810887603.6A CN108994308B (en) | 2018-08-06 | 2018-08-06 | A kind of preparation method of low-apparent-density atomization nickel powder |
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| CN201810887603.6A CN108994308B (en) | 2018-08-06 | 2018-08-06 | A kind of preparation method of low-apparent-density atomization nickel powder |
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| JPS6389608A (en) * | 1986-10-03 | 1988-04-20 | Taiyo Yuden Co Ltd | Production of rare earth magnet alloy powder |
| JP3414686B2 (en) * | 2000-01-07 | 2003-06-09 | 大崎工業株式会社 | Method for producing nickel powder having resistance to oxidation and sintering |
| CN1358592A (en) * | 2000-12-09 | 2002-07-17 | 甘肃雷诺换热设备有限公司 | Method for reducing metal powder bulk loading density |
| CN100484668C (en) * | 2004-12-06 | 2009-05-06 | 荆门市格林美新材料有限公司 | Production method and apparatus for super fine cobalt powder by circulating technology |
| CN1305617C (en) * | 2005-02-06 | 2007-03-21 | 金川集团有限公司 | Production method of dentritic morphology nickel powder |
| CN104227007B (en) * | 2014-09-17 | 2016-02-24 | 北京科技大学 | The method of aluminium powder and Al alloy powder is prepared in a kind of water atomization |
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Effective date of registration: 20240219 Address after: 737100 No. 2 Lanzhou Road, Beijing Road Street, Jinchuan District, Jinchang City, Gansu Province Patentee after: Jinchuan Group Nickel Cobalt Co.,Ltd. Country or region after: China Address before: 737103 No. 98, Jinchuan Road, Jinchang, Gansu Patentee before: JINCHUAN GROUP Co.,Ltd. Country or region before: China |
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