CN101966589B - Composite atomizer for manufacturing gas atomization quick-coagulation spherical superfine metal powder - Google Patents
Composite atomizer for manufacturing gas atomization quick-coagulation spherical superfine metal powder Download PDFInfo
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- CN101966589B CN101966589B CN2010105421333A CN201010542133A CN101966589B CN 101966589 B CN101966589 B CN 101966589B CN 2010105421333 A CN2010105421333 A CN 2010105421333A CN 201010542133 A CN201010542133 A CN 201010542133A CN 101966589 B CN101966589 B CN 101966589B
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Abstract
The invention relates to a composite atomizer for manufacturing gas atomization quick-coagulation spherical superfine metal powder, which comprises a crucible for containing metal liquid and an atomizer stationing chamber which is arranged around a metal liquid guiding pipe at the bottom of the crucible, is communicated with a high-speed airflow source and has an annular structure. The composite atomizer is characterized in that: inner and outer nozzle rings which are formed by a plurality of nozzles arranged in a mode of uniform distribution and have structures of concentric circles are formed around the annular bottom surface of the atomizer stationing chamber, and the nozzles are arranged in a skew mode which makes the axes of the nozzles intersected with the lower extended line of the axis of the liquid guiding pipe, wherein the axes of all nozzles on the inner nozzle rings close to the axis of the liquid guiding pipe and the axis of the liquid guiding pipe intersect at a vertical angle point alpha 1 in an atomizing area II, the axes of all nozzles on the outer nozzle rings away from the axis of the liquid guiding pipe and the axis of the liquid guiding pipe intersect at a vertical angle point alpha 2 of an atomizing area III, and the distance between the two vertical angle points is between 0.1 and 0.4 millimeter; and the atomizing pressure is controlled to be between 0.5and 2.5 Mpa.
Description
Technical field
The invention belongs to the manufacturing field of metal dust, especially relate to the spherical refining metallic powder of a kind of manufacturing gas atomization rapid solidification (amorphous, accurate crystalline substance and microcrystalline powder) and use compound atomizer.
Background technology
The common gases atomizing situation that Stephen D. Ridder etc. take according to high-speed photography, summary drawing atomizing and being divided into three phases.Atomizing I district: the flow of woven hose outlet is extended to band and receives airflow strikes to be broken into the little flow of dispersion for the first time; Atomizing II district: little flow forms the liquid mist through the high energy gas shock, and this district is main range of atomization; Atomizing III district: the liquid mist aggregates into droplet and solidifies.
According to above-mentioned analysis, anti-solution stopping mist polymerization is a key of improving the powder fining effect.People such as Chen Zhenhua are according to this principle, and the rotating disc that in atomization system, adds one or more combinations clashes into and broken drop (seeing Chinese patent, 88212137,90106130,91106862) behind aerodynamic atomization, promptly so-called twin-stage or multistage atomizing method.This method make atomizing effect be improved significantly, but resulting powder is not spherical, is teardrop shaped, and yet relative complex of atomization plant.
Summary of the invention
The object of the invention provides the spherical refining metallic powder of a kind of manufacturing gas atomization rapid solidification to use compound atomizer to existing weak point in the above-mentioned prior art just.This compound atomizer is that the refinement powder can keep the sphericity of powder again so significantly through (interior apart from drift angle 0.1-0.4m distance) additional gas jet stops polymerization of liquid mist and broken remaining big drop in atomizing the 3rd district.
The object of the invention can be realized through following technique measures:
The spherical refining metallic powder of manufacturing gas atomization rapid solidification of the present invention comprises the pincers crucible that is used for the splendid attire molten metal with compound atomizer, stays the chamber around the atomizer of the loop configuration that is connected with the high velocity air source that clamps the setting of crucible bottom metal liquid catheter; The annular bottom surface of staying the chamber around said atomizer is provided with the nozzle ring by several inside and outside two concentric structures that constitute with the nozzle that is uniformly distributed with the arrangement mode setting, and said nozzle all is provided with the crossing skew back mode of the following extended line of its axis and catheter axis; Wherein, All be intersected in α 1 corner point in atomizing II district with the catheter axis near the axis of all nozzles on the inner nozzle ring of catheter axis; All be intersected in α 2 corner points in atomizing III district with the catheter axis away from the axis of all nozzles on the outer nozzle ring of catheter axis, the distance between two drift angles is 0.1-0.4m; The control atomizing pressure is at 0.5-2.5Mpa.
It is annular single-chamber type structure that atomizer described in the present invention is stayed the chamber.
Atomizer described in the present invention is stayed the chamber also can be designed to the inside loop and outside loop cavity configuration as required; Be that said atomizer is stayed the inside loop and outside loop cavity configuration that the chamber is separated into for the toroidal membrane through vertical setting, the nozzle that is arranged on inside and outside two nozzle rings is connected with corresponding ring cavity respectively.
Beneficial effect of the present invention is following:
The present invention compares prior art can make metal liquid stream be able to more fully atomize, thereby makes that the gas atomization effect is better.Adopt the present invention to make its cooling velocity of refining metallic powder and can reach 10
5-10
6K/s, daily output can reach more than the 120Kg, and particle mean size is less than 15 μ m.
Description of drawings
Fig. 1 stays the structural representation of chamber for the single-chamber type structure.
Fig. 2 is the structural representation that two cavity structures are stayed cell structure.
Sequence number among the figure: 1 is plunger, and 2 are the pincers crucibles, and 3 be catheter, and 4 be that the atomizer of annular single-chamber type structure is stayed the chamber, and 5 is the inner nozzle ring, and 6 is the outer nozzle ring, and 7 is the interior ring cavities of two cavate atomizers in the chamber, and 8 is the outer ring cavities of two cavate atomizers in the chamber.
The specific embodiment
To combine embodiment (accompanying drawing) to further describe below the present invention:
Embodiment 1:
As shown in Figure 1; The spherical refining metallic powder of the manufacturing gas atomization rapid solidification of present embodiment comprises the pincers crucible 2 that is used for the splendid attire molten metal with compound atomizer, and the atomizer of the annular single-chamber type structure of the loop configuration that is connected with the high velocity air source that is provided with around pincers crucible bottom metal liquid catheter 3 is in chamber 4; The annular bottom surface of staying the chamber around said atomizer is provided with the nozzle ring 5,6 by several inside and outside two concentric structures that constitute with the nozzle that is uniformly distributed with the arrangement mode setting, and said nozzle all is provided with the crossing skew back mode of the following extended line of its axis and catheter axis; Wherein, All be intersected in α 1 corner point in atomizing II district with the catheter axis near the axis of all nozzles on the inner nozzle ring 5 of catheter axis; All be intersected in α 2 corner points in atomizing III district with the catheter axis away from the axis of all nozzles on the outer nozzle ring 6 of catheter axis, the distance between two drift angles is 0.1-0.4m; The control atomizing pressure is at 0.5-2.5Mpa.
As shown in Figure 2; The difference of this embodiment and embodiment 1 is: said atomizer is stayed the inside loop and outside loop cavity configuration that the chamber is separated into for the toroidal membrane through vertical setting; The nozzle that is arranged on the inner nozzle ring 5 all is connected with interior ring cavity 7, and the nozzle that is arranged on the outer nozzle ring 6 all is connected with outer ring cavity 8.
When compound atomizer of the present invention was used for the manufacturing of amorphous Al-Ni-Y alloy spherical powder, gas atomization pressure was 1.0Mpa, and cooling velocity reaches 10
6K/s, the Al-Ni-Y amorphous powder particle mean size that makes is 7-12 μ m.
When compound atomizer of the present invention was used for the manufacturing of the accurate geode shape of Al-Mn powder, atomizing pressure was 1.5 Mpa, and the accurate crystalline flour of the Al-Mn that makes end particle mean size is 10-14 μ m.
When compound atomizer of the present invention was used for the manufacturing of fine Al-Li alloy spherical powder, atomizing pressure was 1.5 Mpa, and the accurate crystalline flour of the Al-Li that makes end particle mean size is 8-13 μ m.
Claims (1)
1. the spherical refining metallic powder of manufacturing gas atomization rapid solidification is used compound atomizer; It comprises the crucible that is used for the splendid attire molten metal; Atomizer around the loop configuration that is connected with the high velocity air source of crucible bottom molten metal catheter setting is stayed the chamber; It is characterized in that: the annular bottom surface of staying the chamber around said atomizer is provided with the nozzle ring by several inside and outside two concentric structures that constitute with the nozzle that is uniformly distributed with the arrangement mode setting, and said nozzle all is provided with the crossing skew back mode of the following extended line of its axis and catheter axis; Wherein, Axis near all nozzles on the inner nozzle ring of catheter axis constitutes the cone that drift angle is а 1; And the summit of this cone and catheter axis are intersected in atomizing II district; Constitute the cone that drift angle is а 2 away from the axis of all nozzles on the outer nozzle ring of catheter axis, and the summit of this cone is intersected in the III district that atomizes with the catheter axis, the distance between two summits of two cones is 0.1-0.4m; The control atomizing pressure is at 0.5-2.5Mpa; Said atomizing II district is that little flow forms the liquid mist through the high energy gas shock, and this district is main range of atomization; Said atomizing III district is that the liquid mist aggregates into droplet and solidification zone; Said atomizer is stayed the inside loop and outside loop cavity configuration that the chamber is separated into for the toroidal membrane through vertical setting, and the nozzle that is arranged on inside and outside two nozzle rings is connected with corresponding ring cavity respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105421333A CN101966589B (en) | 2010-11-13 | 2010-11-13 | Composite atomizer for manufacturing gas atomization quick-coagulation spherical superfine metal powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105421333A CN101966589B (en) | 2010-11-13 | 2010-11-13 | Composite atomizer for manufacturing gas atomization quick-coagulation spherical superfine metal powder |
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| Publication Number | Publication Date |
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| CN101966589A CN101966589A (en) | 2011-02-09 |
| CN101966589B true CN101966589B (en) | 2012-04-25 |
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| CN2010105421333A Expired - Fee Related CN101966589B (en) | 2010-11-13 | 2010-11-13 | Composite atomizer for manufacturing gas atomization quick-coagulation spherical superfine metal powder |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028850B (en) * | 2011-09-30 | 2015-09-23 | 宝山钢铁股份有限公司 | A kind of injection welding method of sheet metal |
| CN102416481B (en) * | 2011-12-30 | 2013-08-14 | 上海应用技术学院 | Totally closed gas atomization pulverization device |
| CN106180739B (en) * | 2016-10-10 | 2018-08-14 | 江西悦安超细金属有限公司 | A kind of aerosolization nozzle being used to prepare minute spherical powder |
| CN107322001A (en) * | 2017-06-19 | 2017-11-07 | 湖南工业大学 | A kind of 3D printing metal dust and its preparation facilities and method |
| CN108436093A (en) * | 2018-04-23 | 2018-08-24 | 安徽哈特三维科技有限公司 | A kind of Supersonic atomizer preparing iron-based spherical metal powder using crucible gas atomization |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4191516A (en) * | 1976-12-23 | 1980-03-04 | Powdrex Limited | Atomizer for making powder |
| US6444009B1 (en) * | 2001-04-12 | 2002-09-03 | Nanotek Instruments, Inc. | Method for producing environmentally stable reactive alloy powders |
| CN201082470Y (en) * | 2007-08-28 | 2008-07-09 | 宝山钢铁股份有限公司 | Airflow atomizing nozzle device |
| CN201186352Y (en) * | 2008-03-21 | 2009-01-28 | 上海中洲特种合金材料有限公司 | Build-up nozzle and alloy powder vertical atomization apparatus thereof |
| CN101596601A (en) * | 2009-07-09 | 2009-12-09 | 中南大学 | Be used for the atomizer that high efficiency prepares fine metal and alloy powder |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0665613A (en) * | 1992-08-24 | 1994-03-08 | Kobe Steel Ltd | Spray nozzle device |
| JPH08104907A (en) * | 1994-10-06 | 1996-04-23 | Kubota Corp | Production of composite powder |
-
2010
- 2010-11-13 CN CN2010105421333A patent/CN101966589B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4191516A (en) * | 1976-12-23 | 1980-03-04 | Powdrex Limited | Atomizer for making powder |
| US6444009B1 (en) * | 2001-04-12 | 2002-09-03 | Nanotek Instruments, Inc. | Method for producing environmentally stable reactive alloy powders |
| CN201082470Y (en) * | 2007-08-28 | 2008-07-09 | 宝山钢铁股份有限公司 | Airflow atomizing nozzle device |
| CN201186352Y (en) * | 2008-03-21 | 2009-01-28 | 上海中洲特种合金材料有限公司 | Build-up nozzle and alloy powder vertical atomization apparatus thereof |
| CN101596601A (en) * | 2009-07-09 | 2009-12-09 | 中南大学 | Be used for the atomizer that high efficiency prepares fine metal and alloy powder |
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| CN101966589A (en) | 2011-02-09 |
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Granted publication date: 20120425 Termination date: 20161113 |