CN106825592A - A kind of preparation method of the alloy powder for cold spraying - Google Patents
A kind of preparation method of the alloy powder for cold spraying Download PDFInfo
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- CN106825592A CN106825592A CN201611197437.4A CN201611197437A CN106825592A CN 106825592 A CN106825592 A CN 106825592A CN 201611197437 A CN201611197437 A CN 201611197437A CN 106825592 A CN106825592 A CN 106825592A
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- alloy powder
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/06—Metallic powder characterised by the shape of the particles
- B22F1/065—Spherical particles
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- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The present invention disclose a kind of preparation method of the alloy powder for cold spraying, during methods described is each metal addition crucible that will be prepared, is evacuated to less than 0.05Pa, and sensing heating to metal molten is refined 5 10 minutes again after fusing；Molten metal after refining is transferred to insulation bag, while being passed through high pressure N2Or Ar gases, wherein gas pressure is 0.5 2MPa, and molten metal is atomized into molten drop by nozzle by gases at high pressure, and molten drop is cooled down through atomization tank again, that is, obtain the alloy powder for cold spraying of the present invention.The alloy powder composition that is prepared using the method for the invention is uniform, good sphericity, even particle size distribution, with good fluidity, meets the use requirement of cold spray process.
Description
Technical field
The present invention relates to a kind of alloy powder and preparation method thereof, especially a kind of alloy powder and preparation method thereof.
Background technology
Cold spray technique is, using gases at high pressure low-temperature heat, to carry powder particle, and supersonic gas are produced by shaped telescopic tube
Stream, matrix material is clashed under the complete solid-state of metal dust from radial direction, and matrix is deposited on by larger plastic flow deformation
Coating is formed on surface.Compared with traditional plasma spray technology, cold spray technique is low, small, heavy to the heat affecting of matrix with its temperature
Rate is high and the advantages of good economy performance, especially had a clear superiority in the preparation technology of large-scale rotary target material for product.
Cold spraying is an industrial surface spraying new technology for quickly growing, with irreplaceable excellent of other surface sprayings
Point, possesses potential extensively using market.Cold spray process has high requirement to metal dust, and coating quality is with metal dust
Characteristic it is highly dependent, in addition to requiring with good plasticity, also require that metal dust has that granularity is smaller, size distribution
It is narrow, good sphericity, the features such as good fluidity.
Chinese patent 201210082935 prepares cold spraying ball by using the method for centrifugal spray combination high temperature sintering
Shape metal molybdenum particle, by molybdenum powder and deionized water, polyethylene glycol and polyvinyl alcohol, centrifugation spray is carried out after high-energy ball milling mixing
Mist is granulated, and after being sintered through atmosphere protection high temperature, broken, classification obtains spherical molybdenum powder particle.Make granularity less molybdenum powder that ball to occur
Change process, improves the mobility of powder.Additionally, gas atomization is widely used in the preparation of the metal dusts such as Sn, Al, Cu, Ag.
The technique prepare metal dust sphericity is preferable, oxygen content is low.Chinese patent 201510886870.8 discloses a kind of cold spray
The preparation method of matel coated silver powder, silver powder is obtained by aerosolization, then is sieved by vibratory sieve, obtain narrow particle size distribution,
The silver powder of good sphericity.
In recent years, with the development of cold spray technique, the demand to Cu-Al, Zn-Al isoreactivity alloy powder is constantly increasing
Long, the alloyed powder such as Cu-Al, Zn-Al is higher due to activity, and the alloy powder oxygen content of current preparation technology is high, the stream of powder
Dynamic property is bad, it is difficult to meet the use requirement of cold spray process.The present invention prepares Cu-Al, Zn-Al alloy using a kind of aerosolization
Powder, is improved by existing gas atomization, the alloy granularity narrowly distributing of preparation, good sphericity, and powder has good
Mobility the advantages of.
The content of the invention
A kind of alloy for cold spraying is provided it is an object of the invention to overcome above-mentioned the deficiencies in the prior art part
The preparation method of powder, the alloy powder pattern prepared using methods described is spherical in shape, and powder has preferable mobility.
To achieve the above object, the technical scheme taken of the present invention is：A kind of preparation of the alloy powder for cold spraying
Method, the described method comprises the following steps：Each metal that will be prepared is added in crucible, is evacuated to less than 0.05Pa, sensing
Metal molten is heated to, is refined again after fusing 5-10 minutes；Molten metal after refining is transferred to insulation bag, while being passed through high pressure
N2 or Ar gases, wherein gas pressure are 0.5-2MPa, and molten metal is atomized into molten drop by nozzle by gases at high pressure,
Molten drop is cooled down through atomization tank again, that is, obtain the alloy powder for cold spraying of the present invention.
Specifically, the preparation technology flow of the alloy powder for cold spraying is：
The technique that the present invention prepares alloy powder is as follows：
Dispensing → induction melting → aerosolization → cooling → screening → detection → packaging → alloy powder
In addition, the present invention also provides a kind of device for preparing alloy powder described above, described device includes：Sensing
Smelting furnace, inside there is sensing melting kettle, and insulation bag is provided with stove, and insulation bag is arranged on nozzle system, and insulation is surrounded by heating
System, atomization system includes nozzle and high-pressure air pipe, spray chamber.
Specifically, the device for preparing alloy powder mainly includes：The main body of device is induction melting furnace, inside there is sensing
Melting kettle, is mainly used in the melting of alloy；Insulation bag is provided with stove, insulation bag is arranged on nozzle system, Main Function
Molten metal is imported into nozzle, insulation is surrounded by heating system, and insulation effect is played to alloy molten solution；Atomization system is mainly used in alloy
The atomization of liquation, atomization system includes nozzle and high-pressure air pipe；Spray chamber is mainly used in molten drop condensation and collects, spray chamber
Size required with powder processed and capacity is relevant.
The alloy powder prepared using the preparation method of alloy powder of the present invention, the pattern of alloyed powder is in ball
Shape, powder has preferable mobility, can be applied in cold spray process well.
Brief description of the drawings
Fig. 1 is the SEM figures of the Zn-Al alloy powder of the embodiment of the present invention 1.
Specific embodiment
For the object, technical solutions and advantages of the present invention are better described, below in conjunction with specific embodiment and accompanying drawing pair
The present invention is described further.
Embodiment 1
The alloy powder for being used for cold spraying described in the present embodiment is prepared from using following methods：
Metal Zn, Al are pressed 98:2 ratio dispensing, adds raw materials into crucible, is evacuated to less than 0.05Pa, and sensing adds
Heat is refined 5 minutes to metal molten after alloy melting；
Liquation after refining is transferred to insulation bag, while being passed through high pressure argon gas, argon pressure is passed through for 1MPa, liquation passes through
Nozzle, molten drop is atomized into by gases at high pressure, and molten drop is cooled down through atomization tank, that is, obtain Zn-Al alloyed spherical powders.
The Zn-Al alloy powder that the present embodiment is prepared is observed under being placed in ESEM, as a result such as Fig. 1 institutes
Show, it is seen that metal dust is mainly distributed on 20-50 microns, and the pattern of alloyed powder is spherical in shape, and powder has preferable mobility.
Embodiment 2
The alloy powder for being used for cold spraying described in the present embodiment is prepared from using following methods：
Ni metal, Al are pressed 85:15 ratio dispensing, adds raw materials into crucible, is evacuated to less than 0.05Pa, and sensing adds
Heat is refined 10 minutes to metal molten after alloy melting；
Liquation after refining is transferred to insulation bag, while being passed through high pressure argon gas, argon pressure is passed through for 2MPa, liquation passes through
Nozzle, molten drop is atomized into by gases at high pressure, and molten drop is cooled down through atomization tank, that is, obtain Cu-Al alloyed spherical powders.
The Cu-Al alloy powders that the present embodiment is prepared are observed under being placed in ESEM, as a result visible metal
Powder is mainly distributed on 10-40 microns, and the pattern of alloyed powder is spherical in shape, and powder has preferable mobility.
It is last to should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than the present invention is protected
The limitation of scope is protected, although being explained in detail to the present invention with reference to preferred embodiment, one of ordinary skill in the art should
Understand, technical scheme can be modified or equivalent, without deviating from the essence of technical solution of the present invention
And scope.
Claims (2)
1. the preparation method of a kind of alloy powder for cold spraying, it is characterised in that the described method comprises the following steps：To match somebody with somebody
Each metal for making is added in crucible, is evacuated to less than 0.05Pa, and sensing heating to metal molten refines 5-10 again after fusing
Minute；Molten metal after refining is transferred to insulation bag, while being passed through high pressure N2 or Ar gas, wherein gas pressure is 0.5-
2MPa, molten metal is atomized into molten drop by nozzle by gases at high pressure, and molten drop is cooled down through atomization tank, that is, obtained again
Alloy powder for cold spraying of the present invention.
2. a kind of device for preparing alloy powder as claimed in claim 1, it is characterised in that described device includes：Sensing
Smelting furnace, inside there is sensing melting kettle, and insulation bag is provided with stove, and insulation bag is arranged on nozzle system, and insulation is surrounded by heating
System, atomization system includes nozzle and high-pressure air pipe, spray chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611197437.4A CN106825592A (en) | 2016-12-22 | 2016-12-22 | A kind of preparation method of the alloy powder for cold spraying |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611197437.4A CN106825592A (en) | 2016-12-22 | 2016-12-22 | A kind of preparation method of the alloy powder for cold spraying |
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| CN106825592A true CN106825592A (en) | 2017-06-13 |
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| CN201611197437.4A Pending CN106825592A (en) | 2016-12-22 | 2016-12-22 | A kind of preparation method of the alloy powder for cold spraying |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109054592A (en) * | 2018-08-20 | 2018-12-21 | 常州市天安特种涂料有限公司 | Anti-corrosion weather-resistant coating more than naval vessel waterline and preparation method thereof |
| CN109267084A (en) * | 2018-09-28 | 2019-01-25 | 湘潭大学 | A kind of preparation method of pre-alloyed porous Ni-base electrolysis cathode material for hydrogen evolution |
| CN113862620A (en) * | 2021-09-17 | 2021-12-31 | 芜湖映日科技股份有限公司 | Preparation method of CIGS rotary sputtering target material |
| CN114059027A (en) * | 2020-08-05 | 2022-02-18 | 松田产业株式会社 | Cylindrical Ag alloy sputtering target, sputtering device, and method for manufacturing electronic device |
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| JP2002030374A (en) * | 2000-07-11 | 2002-01-31 | Masuo Okada | Hydrogen storage alloy and its production method |
| CN102925824A (en) * | 2012-11-23 | 2013-02-13 | 北京科技大学 | Preparation method for zirconium-based amorphous alloy as well as powder and large-sized block of zirconium-based amorphous alloy |
| CN104227007A (en) * | 2014-09-17 | 2014-12-24 | 北京科技大学 | Method for preparing aluminum powder and aluminum alloy powder through water atomization |
| CN105195752A (en) * | 2015-09-07 | 2015-12-30 | 内蒙古科技大学 | Method for preparing aluminum-base alloy powder material |
| CN105908018A (en) * | 2016-05-12 | 2016-08-31 | 北京矿冶研究总院 | Novel composite thermal spraying powder and preparation method thereof |
| CN106001588A (en) * | 2016-07-07 | 2016-10-12 | 泸溪县安泰新材料科技有限责任公司 | Ultrafine aluminum alloy powder and production method thereof |
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- 2016-12-22 CN CN201611197437.4A patent/CN106825592A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002030374A (en) * | 2000-07-11 | 2002-01-31 | Masuo Okada | Hydrogen storage alloy and its production method |
| CN102925824A (en) * | 2012-11-23 | 2013-02-13 | 北京科技大学 | Preparation method for zirconium-based amorphous alloy as well as powder and large-sized block of zirconium-based amorphous alloy |
| CN104227007A (en) * | 2014-09-17 | 2014-12-24 | 北京科技大学 | Method for preparing aluminum powder and aluminum alloy powder through water atomization |
| CN105195752A (en) * | 2015-09-07 | 2015-12-30 | 内蒙古科技大学 | Method for preparing aluminum-base alloy powder material |
| CN105908018A (en) * | 2016-05-12 | 2016-08-31 | 北京矿冶研究总院 | Novel composite thermal spraying powder and preparation method thereof |
| CN106001588A (en) * | 2016-07-07 | 2016-10-12 | 泸溪县安泰新材料科技有限责任公司 | Ultrafine aluminum alloy powder and production method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109054592A (en) * | 2018-08-20 | 2018-12-21 | 常州市天安特种涂料有限公司 | Anti-corrosion weather-resistant coating more than naval vessel waterline and preparation method thereof |
| CN109267084A (en) * | 2018-09-28 | 2019-01-25 | 湘潭大学 | A kind of preparation method of pre-alloyed porous Ni-base electrolysis cathode material for hydrogen evolution |
| CN114059027A (en) * | 2020-08-05 | 2022-02-18 | 松田产业株式会社 | Cylindrical Ag alloy sputtering target, sputtering device, and method for manufacturing electronic device |
| CN113862620A (en) * | 2021-09-17 | 2021-12-31 | 芜湖映日科技股份有限公司 | Preparation method of CIGS rotary sputtering target material |
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Application publication date: 20170613 |