CN103658667B - One prepares fine metal powder body nebulizer - Google Patents
One prepares fine metal powder body nebulizer Download PDFInfo
- Publication number
- CN103658667B CN103658667B CN201310567954.6A CN201310567954A CN103658667B CN 103658667 B CN103658667 B CN 103658667B CN 201310567954 A CN201310567954 A CN 201310567954A CN 103658667 B CN103658667 B CN 103658667B
- Authority
- CN
- China
- Prior art keywords
- nozzle
- liquid feeding
- feeding end
- jet pipe
- nebulizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000843 powder Substances 0.000 title claims abstract description 28
- 239000006199 nebulizer Substances 0.000 title claims abstract description 18
- 229910001111 Fine metal Inorganic materials 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 210000002583 cell-derived microparticle Anatomy 0.000 claims abstract description 14
- 239000012774 insulation material Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 17
- 239000002184 metal Substances 0.000 abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 11
- 238000000889 atomisation Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- 238000009826 distribution Methods 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000009689 gas atomisation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Landscapes
- Nozzles (AREA)
Abstract
The invention discloses one and prepare fine metal powder body nebulizer, including body (4) in nozzle ectosome (1), nozzle and diversion tube (6)；Being provided with air cavity (3) in described nozzle ectosome and nozzle between body, the air inlet (2) of air cavity is distributed in around nozzle ectosome；In described nozzle, body is provided with jet pipe (5), and described diversion tube is nested in jet pipe, and described jet pipe is symmetrical many annular tube types Laval nozzle, and described jet pipe and diversion tube are installed on the center of body in nozzle；Described diversion tube is that split type two section of three part-structure is constituted, and is made up of the catheter (7) being positioned at bottom and superposed liquid feeding end (8) and liquid feeding end overcoat (9).This prepares fine metal powder body nebulizer can effectively prevent from being atomized supersonic speed cryogenic gas to the cooling of molten metal in mozzle, thus prevents the phenomenon that catheter blocks；Simultaneously facilitate installation or the replacing of mozzle, be effectively improved production efficiency and economic benefit.
Description
Technical field
The present invention relates to a kind of utilize gas atomization molten metal manufacture refining metallic powder device, specifically one
Plant and prepare fine metal powder body nebulizer.
Background technology
In the prior art, Gas atomization techniques is the main method producing metal dust.Atomized powder has ball
The advantages such as shape degree is high, powder size is controlled, oxygen content is low and production cost is low, therefore, Gas atomization techniques is not
It is only powder metallurgy industry and the raw material of high-quality is provided, also for using other relevant industries of metal dust, as sprayed,
The industry such as surfacing, solder provides metal and the alloy powder of high-quality.
The ultimate principle of gas atomization is with supersonic airstream liquid metal stream to be ground into little liquid and be frozen into
The process of powder.Its core is to control the gas mechanism to metal liquid stream, makes the kinetic energy of air-flow to greatest extent
The surface energy being converted into new fecula.
At present, the technology improving nebulizer is a lot, is broadly divided into restraint-type and unrestricted formula.Restraint-type
Refer to that molten metal relies on the suction of high-speed gas to move effect, arrive atomization point.Metal liquid stream speed is relatively more steady, mist
During change, energy transmission uniformly, is conducive to obtaining the fine powder of narrow particle size distribution.But nozzle is susceptible to gag somebody
Phenomenon, this does not the most affect production efficiency to the fine powder wanting production narrow particle size distribution is a difficult problem.Unrestricted formula
Refer to that metal liquid stream exports between atomizing medium engagement point from catheter, rely on metal liquid stream self gravitation without
The free fall of constraint.Its shortcoming is when atomization gas air pressure is more than fluid pressure, and gas is along catheter adverse current
On and, form bubbling phenomenon, cause liquid stream instability to be even atomized termination, and this free fall style nozzle institute
The metal-powder particle diameter prepared is relatively big, and fine powder yield is few, and product profit is low.
Summary of the invention
The problem existed for above-mentioned prior art, the present invention provides one to prepare the atomization of fine metal powder body
Device, prevents the clogging of atomizer nozzle, simultaneously facilitates installation or the replacing of mozzle, is effectively improved production
Efficiency and economic benefit.
To achieve these goals, this is prepared fine metal powder body nebulizer and includes body in nozzle ectosome, nozzle
And diversion tube；
Being provided with air cavity between body in described nozzle ectosome and nozzle, the air inlet of air cavity is distributed in the week of nozzle ectosome
Enclose；In described nozzle, body is provided with jet pipe, and described diversion tube is nested in jet pipe, and described jet pipe is that symmetry is many
Annular tube type Laval nozzle, described jet pipe and diversion tube are installed on the center of body in nozzle；
Described diversion tube is that split type two section of three part-structure is constituted, by being positioned at the catheter of bottom and being positioned at
The liquid feeding end on top and liquid feeding end overcoat are constituted, and the middle part of described catheter is liquation runner.
The length of the Outlet Section of the Outlet Section distance jet pipe of described diversion tube is within 0-20mm.
Described catheter, liquid feeding end and liquid feeding end overcoat all use material high temperature resistant, that pyroconductivity is low to make.
By high-temperature-resistant thermal-insulation material seal between described catheter and liquid feeding end.
High-temperature-resistant thermal-insulation material it is filled with between described liquid feeding end and liquid feeding end overcoat.
Compared with prior art, this prepares fine metal powder body nebulizer employing symmetrical many annular tube types Lavalle spray
Pipe and split type diversion tube.Nebulizer can be formed after being passed through compressed gas at nozzle hole to gas joint
The air curtain of one taper, the now steady air current in cone, and in mozzle, form negative pressuren zone, it is ensured that metal
Liquation enters atomization disintegrating area with stable flow, to obtain the metal-powder of narrower particle size distribution；Catheter with
Liquid feeding end uses the material that identical high temperature heat-resistant conductivity is low, and liquid feeding end overcoat uses exotic material to make,
Liquid feeding end and liquid feeding end overcoat central filler have a high-temperature-resistant thermal-insulation material (such as silicate aluminum board), and catheter with
Silicate aluminum board is selected to seal at liquid feeding end seal groove.
It is by changing nebulizer and nozzle arrangements and resistance to nozzle selection that this prepares fine metal powder body nebulizer
The low material of high temperature heat transfer rate, can effectively prevent from being atomized supersonic speed cryogenic gas to molten metal in mozzle
Cooling, thus the phenomenon preventing catheter from blocking, produce narrow particle size distribution, metal-powder that fineness is less；
Use split type diversion tube simultaneously, be very easy to installation or the replacing of mozzle, be effectively improved life
Produce efficiency and economic benefit.
Accompanying drawing explanation
Fig. 1 is the agent structure sectional view of the present invention；
Fig. 2 is the cutaway view Amplified image of diversion tube in the present invention.
In figure: 1, nozzle ectosome, 2, air inlet, 3, air cavity, 4, body in nozzle, 5, jet pipe, 6, lead
Flow tube body, 7, catheter, 8, liquid feeding end, 9, liquid feeding end overcoat, 10, liquation runner.
Detailed description of the invention
The present invention will be further described below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, this prepares in fine metal powder body nebulizer includes nozzle ectosome 1, nozzle
Body 4 and diversion tube 6；
Being provided with air cavity 3 in described nozzle ectosome 1 and nozzle between body 4, the air inlet 2 of air cavity 3 is distributed in spray
Mouth ectosome 1 is around；In described nozzle, body 4 is provided with jet pipe 5, and described diversion tube 6 is nested in jet pipe 5
In, described jet pipe 5 is symmetrical many annular tube types Laval nozzle, and described jet pipe 5 is installed on spray with diversion tube 6
The center of body 4 in mouth；Laval nozzle i.e. Laval jet pipe, the present invention use many annular tube types Laval nozzle this
One structure can make the speed of air-flow change because spraying the change of sectional area in jet pipe 5, makes air-flow accelerate as Supersonic
Same joint is converged at, it is achieved that prepared by the atomization to metal-powder after speed air-flow.
Described diversion tube 6 is that split type two section of three part-structure is constituted, by be positioned at bottom catheter 7 and
Superposed liquid feeding end 8 and liquid feeding end overcoat 9 are constituted, and the middle part of described catheter 7 is liquation runner 10.
Further, the length of the Outlet Section of the Outlet Section distance jet pipe 5 of described diversion tube 6 is at 0-20mm
Within, gag somebody the generation of situation and molten metal is controlled in effective range of atomization reducing molten metal condensation
In territory.
As preferably, described catheter 7, liquid feeding end 8 all use high temperature resistant, conduction of heat with liquid feeding end overcoat 9
The material that rate is low is made, as used graphite, zirconium oxide and soapstone etc., it would however also be possible to employ other similar high temperature resistant,
The material that pyroconductivity is low.
As preferably, by high-temperature-resistant thermal-insulation material seal between described catheter 7 and liquid feeding end 8, as used
Silicate aluminum board is as encapsulant, it would however also be possible to employ other similar high-temperature-resistant thermal-insulation materials are as sealing.
As preferably, between described liquid feeding end 8 and liquid feeding end overcoat 9, it is filled with high-temperature-resistant thermal-insulation material, such as silicon
Acid aluminum is as packing material, it would however also be possible to employ other similar high-temperature-resistant thermal-insulation materials.
The nebulizer of the present invention is after being passed through compressed gas after jet pipe 5 accelerates as supersonic airstream, and gas is by shape
Become one taper air curtain and be intersected in same point, now the steady air current in cone air curtain, and at diversion tube 6
Interior formation negative pressuren zone, it is ensured that molten metal enters atomization disintegrating area with stable flow, to obtain particle size distribution relatively
Narrow metal-powder.
The liquation of outflow is impacted into tiny by the supersonic airstream sprayed by symmetrical many annular tube types Laval nozzle 5
Drop and be cooled to rapidly metal-powder, simultaneously because catheter 7 and liquid feeding end 8 use identical high temperature resistant,
The material that pyroconductivity is low, can effectively prevent metal liquid stream in catheter 7 from being blocked by the coldest gas cooling
The phenomenon of catheter 7；Even if occurring that catheter 7 is gaged somebody phenomenon, because nebulizer and catheter body 6 are split type,
Nozzle ectosome 1 can be removed taking-up catheter 7 and then it is dredged or changes, convenient to operation, can
The effective seriality ensureing production.
This is prepared fine metal powder body nebulizer and can effectively prevent from being atomized supersonic speed cryogenic gas to mozzle
The cooling of middle molten metal, thus prevent the phenomenon that catheter blocks；Simultaneously facilitate installation or the replacing of mozzle,
It is effectively improved production efficiency and economic benefit.
Claims (3)
1. prepare a fine metal powder body nebulizer, including body (4) in nozzle ectosome (1), nozzle and diversion tube (6)；
It is characterized in that, in described nozzle ectosome (1) and nozzle, between body (4), be provided with air cavity (3), entering of air cavity (3)
QI KOU (2) is distributed in nozzle ectosome (1) around；In described nozzle, body (4) is provided with jet pipe (5), described water conservancy diversion
Body (6) is nested in jet pipe (5), and described jet pipe (5) is symmetrical many annular tube types Laval nozzle, described jet pipe (5)
It is installed on the center of body (4) in nozzle with diversion tube (6)；
Described diversion tube (6) is that split type two section of three part-structure is constituted, by being positioned at the catheter (7) of bottom and being positioned at
The liquid feeding end (8) on top and liquid feeding end overcoat (9) are constituted, and the middle part of described catheter (7) is liquation runner (10)；
The length of the Outlet Section of Outlet Section distance jet pipe (5) of described diversion tube (6) is at 0-20mm；Described catheter (7),
Liquid feeding end (8) and liquid feeding end overcoat (9) all use material high temperature resistant, that pyroconductivity is low to make.
One the most according to claim 1 prepares fine metal powder body nebulizer, it is characterised in that described catheter (7)
And by high-temperature-resistant thermal-insulation material seal between liquid feeding end (8).
One the most according to claim 1 prepares fine metal powder body nebulizer, it is characterised in that described liquid feeding end (8)
And liquid feeding end overcoat is filled with high-temperature-resistant thermal-insulation material between (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310567954.6A CN103658667B (en) | 2013-11-14 | 2013-11-14 | One prepares fine metal powder body nebulizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310567954.6A CN103658667B (en) | 2013-11-14 | 2013-11-14 | One prepares fine metal powder body nebulizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103658667A CN103658667A (en) | 2014-03-26 |
| CN103658667B true CN103658667B (en) | 2017-01-04 |
Family
ID=50298128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310567954.6A Active CN103658667B (en) | 2013-11-14 | 2013-11-14 | One prepares fine metal powder body nebulizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103658667B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106000227B (en) * | 2016-07-13 | 2019-01-25 | 深圳市航盛新材料技术有限公司 | Gas-liquid biphase system for powder system |
| CN111195731B (en) * | 2020-01-10 | 2023-03-24 | 上海电气集团股份有限公司 | Bottom hole type crucible induction melting gas atomization powder making device and method |
Citations (7)
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|---|---|---|---|---|
| US7827822B2 (en) * | 2007-07-25 | 2010-11-09 | Schott Corporation | Method and apparatus for spray-forming melts of glass and glass-ceramic compositions |
| CN101879600A (en) * | 2010-07-06 | 2010-11-10 | 河南省远洋铝业有限公司 | Anti-blocking atomizer nozzle for preparing micro-fine metal powder and anti-blocking method thereof |
| CN201913248U (en) * | 2010-12-21 | 2011-08-03 | 河南理工大学 | Flow guide mechanism applicable to metal atomizer |
| CN202667659U (en) * | 2012-02-29 | 2013-01-16 | 上海应用技术学院 | Atomizer capable of removing high-melting-point material blocking of jet nozzle and diversion pipe |
| CN202763046U (en) * | 2012-09-29 | 2013-03-06 | 湖南恒基粉末科技有限责任公司 | Atomizer for manufacturing superfine metal powder |
| CN202861405U (en) * | 2012-11-16 | 2013-04-10 | 广州有色金属研究院 | Atomizer for preparation of metal or alloy powder |
| CN203621500U (en) * | 2013-11-14 | 2014-06-04 | 江苏博迁新材料有限公司 | Atomizer for preparing fine metal powder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0326491D0 (en) * | 2003-11-13 | 2003-12-17 | Boc Group Plc | Cooling of liquids |
-
2013
- 2013-11-14 CN CN201310567954.6A patent/CN103658667B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7827822B2 (en) * | 2007-07-25 | 2010-11-09 | Schott Corporation | Method and apparatus for spray-forming melts of glass and glass-ceramic compositions |
| CN101879600A (en) * | 2010-07-06 | 2010-11-10 | 河南省远洋铝业有限公司 | Anti-blocking atomizer nozzle for preparing micro-fine metal powder and anti-blocking method thereof |
| CN201913248U (en) * | 2010-12-21 | 2011-08-03 | 河南理工大学 | Flow guide mechanism applicable to metal atomizer |
| CN202667659U (en) * | 2012-02-29 | 2013-01-16 | 上海应用技术学院 | Atomizer capable of removing high-melting-point material blocking of jet nozzle and diversion pipe |
| CN202763046U (en) * | 2012-09-29 | 2013-03-06 | 湖南恒基粉末科技有限责任公司 | Atomizer for manufacturing superfine metal powder |
| CN202861405U (en) * | 2012-11-16 | 2013-04-10 | 广州有色金属研究院 | Atomizer for preparation of metal or alloy powder |
| CN203621500U (en) * | 2013-11-14 | 2014-06-04 | 江苏博迁新材料有限公司 | Atomizer for preparing fine metal powder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103658667A (en) | 2014-03-26 |
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Address after: 223800 Suqian province high tech Development Zone, Jiangshan Road, No. 23, No. Patentee after: Jiangsu Bo move new materials Limited by Share Ltd Address before: 223800 Huashan Road, Suyu Economic Development Zone, Jiangsu, No. 109, No. Patentee before: Jiangsu Boqian New Materials Co., Ltd. |