CN104985187B - A kind of noble metal atomising device of powder preparation - Google Patents
A kind of noble metal atomising device of powder preparation Download PDFInfo
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- CN104985187B CN104985187B CN201510394779.4A CN201510394779A CN104985187B CN 104985187 B CN104985187 B CN 104985187B CN 201510394779 A CN201510394779 A CN 201510394779A CN 104985187 B CN104985187 B CN 104985187B
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Abstract
The invention discloses a kind of noble metal atomising device of powder preparation, this metal atomization device is arranged on a platform assembly, and described atomization interior is provided with：The control system assembly that atomization system assembly is electrically connected with atomization system assembly；Described atomization system assembly head is mounted with metal atomization device, is provided with water atomization plant on the top bevel of metal atomization device, and metal atomization device is arranged on the shell body of atomization system assembly by knocker formula fixation clamp；The enforcement of the present invention enhances the safety that powder by atomization produces under hot mode of operation, and the controllability of atomization process technological parameter is high, produces more stable, also greatly improves properties of product, produces more energy efficient.Present device compact conformation, handsome in appearance, easy to use, it is easy to keep in repair, there is good versatility and interchangeability.
Description
Technical field
The present invention relates to powder manufacturing apparatus, particularly relate to a kind of noble metal atomising device of powder preparation.
Background technology
High-performance, the extensive application of inexpensive powder not only change the mode of production of powder metallurgy industry, and promote
The change of the mode of production.Development high-performance powder and its technology of preparing, have become one in current Materials Science and Engineering research
Individual very active high-tech Disciplinary Frontiers.Gas-atomized powder have that environmental pollution is little, powder sphericity high, oxygen content is low and
The advantages of cooldown rate is big, the experience development of nearly 200 years, have become as the master producing high-performance metal and alloy powder at present
Want method.The powder that atomization method is produced has accounted for nearly 80 % of world today's powder total output.
Gas atomization techniques are the main method producing metal and alloy powder.Atomized powder has sphericity height, powder
Granularity is controlled, oxygen content is low, low production cost and adapt to various metals and alloy powder production the advantages of, it has also become Gao Xing
Energy and the main development direction of special alloy powder technology of preparing.
The design of freely falling body nozzle is simple, be difficult to gag somebody, control process is also fairly simple, but nebulization efficiency is not high.Limit
Formula nozzle arrangements are compact, and nebulization efficiency significantly improves, but design is complicated, and technical process is difficult to control.Therefore, aerosolization technology exists
Slower development in subsequent one period.With the outburst of World War II, iron powder sintering part demand amount increases severely, for this, people
Be sought for more preferably iron powder technology of preparing.Hanmitak has invented a kind of referred to as gas-atomized powder technique of DPG, becomes
Work(has produced iron powder, and people are called R1E powder this iron powder.Mannesman utilizes tapered air comminution by gas stream molten hot metal
Method high performance iron powder has equally been obtained, here it is famous Mannesmann's method, its ultimate principle is used till today always.Mist
Change iron powder sphericity high, any surface finish, it is applied to production in enormous quantities.With developing rapidly, with regard to gas of gas-atomized powder technology
The research of powder by atomization technique and mechanism also deepens continuously.Thompson have studied technological parameter to atomizing aluminium powder powder size
Impact, find powder size with metal flow velocity improve, jet pressure increase and metal temperature increase and reduce.
, using nozzle ring on the basis of Mannesmann's method, technical process is more stable for Watkingson, and finds to hold using air atomizing
Easily cause oxidization of metal powder, reduce powder purity.Soon, ground using the experiment of inert gas atomizer (nitrogen and argon)
Study carefully and be developed.
In the 50's～60 of 20th century, gas atomization starts to be used on a large scale producing metal and alloy powder.20th century
Achieve significant progress with regard to the optimization of atomization process and the research of atomization mechanism at the beginning of the 70's, promote aerosolization system
The fast development of powder technology.
Atomization powder-making technique is the main method producing metal and alloy powder, and atomized powder has powder size can
Control, oxygen content is low, low production cost and adapt to various metals and alloy powder production the advantages of, it has also become high performance alloys
The main development direction of powder technology of preparing.With powder metallurgy new technology new material appearance and powder raw material on surface
Engineering, electronics, chemical industry, laser rapid prototyping, military affairs etc. industry in application, the requirement to alloy powder towards fine, high-purity,
Spheroidization direction is developed, and this driving force promotes the continuous development of powder atomization production technology.
Powder by atomization equipment traditional at present separates with current limliting running gate system for melting, metal in smelting furnace melting with
Afterwards, topple over and be cast in bottom pour ladle in the middle of current-limiting type, this process is open environment it is impossible to be controlled to oxygen atmosphere it is difficult to make
Standby low oxygen content high-test metal powder；The inconvenient temperature and the current limliting water conservancy diversion in bottom pour ladle system structure in the middle of current-limiting type is let slip a remark
Measurement controls, and causes molten metal supercool frozen plug accident during atomization often to lead to produce pause；Deposit in fusion process
Splash in the cast transfer of high temperature high-energy metallic solution, not only thermal energy loss and waste, also there is certain behaviour and do potential safety hazard.
Content of the invention
For deficiency of the prior art, the technical problem to be solved in the present invention there are provided a kind of the expensive of powder preparation
Metal atomization device, flow of liquid metal is quickly ground into little liquid using water atomization plant, metal atomization device by this atomization plant
Drip and be frozen into powder, improve efficiency and the quality of powder preparation.
For solving above-mentioned technical problem, the present invention is realized by below scheme：A kind of noble metal atomization of powder preparation
Device, this metal atomization device is arranged on a platform assembly, and it includes：
Melting moist closet, aerochamber, inflation system, cyclone dust extractor, receipts powder tank, vacuum system, inflation system, water-cooled system
System, power supply and electric-control system；
Described atomization interior is provided with：The control system dress that atomization system assembly is electrically connected with atomization system assembly
Part；
Described atomization system assembly head is mounted with metal atomization device, in the top bevel of metal atomization device
On water atomization plant is installed, metal atomization device is arranged on the shell body of atomization system assembly by knocker formula fixation clamp
On；
Described water atomization plant includes water atomization housing, nozzle body, nozzle, pressing plate, and described water atomization housing is disk
Shape, is internally provided with two-layer toroidal cavity at it, and innermost layer groove edge arranges some nozzles, the ring of encirclement of some nozzles
Interior setting nozzle body pressure cap, described nozzle body pressure cap connects nozzle body, described nozzle body clutch disk shape pressing plate, institute
State pressing plate to be bolted on the shell body of atomization system assembly；
Described metal atomization device includes graphite cup, quartz curette, heating coil, metal atomization housing, fixed mechanism, thermoelectricity
Even assembly, described graphite cup is placed in quartz curette, coiling heating coil outside quartz curette, and described heating coil is electrically connected with
Thermocouple assembly, graphite cup, quartz curette, heating coil are overall after combining to be inserted in metal atomization housing.
Further, described receipts powder tank is arranged on atomization system assembly lowermost end, and receiving powder tank is in conical funnel shape, occupies
Platform lower in platform assembly.
Further, described nozzle is provided with four, is placed on the internal layer groove edge quarterline of water atomization housing,
Nozzle spray direction slopes inwardly, and between 75 ~ 85 degree, described nozzle body is cylinder, cylindrical member at one end at its angle of inclination
Edge is arranged to hexaplanar, is easy to die nut rotation, is provided with a projection, at this on a side end face of hexaplanar
Flat recess is arranged on the end face of projection, flat recess bottom surface is curved, and the center is provided with round tube hole, and this round tube hole extends to spray
The cylinder other end of mouth.
Further, described graphite cup is cylindrical shape, two ends through hole, and its material uses graphite material, and graphite cup is opened
Mouth edge is provided with a circle platform rafter.
Further, described quartz curette is cylindrical shape, two ends through hole, and its material uses quartz material, and quartz curette is opened
Mouth edge is provided with a circle platform rafter.
Further, described heating coil turns to cylindrical shape, and its inwall is apart from quartz curette outer wall 20 ~ 30mm, its underpart
Coil is embedded in the recessed circle on metal atomization enclosure interior bottom surface.
Further, described metal atomization housing is cylindrical, is each provided with one at an upper portion thereof at the diameter two ends at edge
Individual side ear, this side ear is square important actor shape, one of square platform cylinder is provided with four screwed holes, on knocker formula fixation clamp
It is provided with four cheese head screws, four cheese head screws are tightened at four screwed holes, and knocker formula fixation clamp is fixed on pyrosol
Change on housing, another square platform cylinder is provided with two screwed holes, by this two screwed holes by metal atomization housing even
Connect weight butterfly hinge, described weight butterfly hinge is provided with the connecting screw of four M4*10, two of its top
The connecting screw of M4*10 connects metal atomization case top lid, and upper lid is opened by weight butterfly hinge or closed, above covers
It is provided with the clip portion mated with knocker formula fixation clamp.
Further, the capping edge of described metal atomization housing is provided with a circle groove, is cased with close on this groove
Seal, the side wall of described metal atomization housing is provided with 3 circular holes, two of which circular hole is cased with insulation sleeve, the 3rd circle
Borehole jack connects right angle outer cone thread pyrite cutting ferrule.
Further, it is cased with copper tube connector at described insulation sleeve internal cavity, the connection of this copper tube connector is heat-resisting quickly to be connect
Head.
With respect to prior art, the invention has the beneficial effects as follows：The enforcement of the present invention enhances powder by atomization and produces heat behaviour
Make the safety under state, the controllability of atomization process technological parameter is high, produces more stable, also greatly improves product
Performance, produces more energy efficient.Present device compact conformation, handsome in appearance, easy to use, it is easy to keep in repair, have good general
Property and interchangeability.The gas atomization of the present invention is with a high velocity air, flow of liquid metal to be ground into droplet and be frozen into powder
Process, core be control the mechanism to metal liquor stream for the gas, make the kinetic energy of air-flow be converted into new fecula to greatest extent
Last surface energy.Atomization process is a multifactor, complex process for many reference amounts change, and wherein nozzle is to make atomization in atomising device
Medium (gas etc.) obtains high-energy, concentrates the part passing to motlten metal at high speed and by the energy of atomizing medium, this
Invention plays an important role to the stability of nebulization efficiency and atomization process, and the structure of nozzle and performance determine atomized powder simultaneously
Performance and efficiency.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is noble metal atomising device overall structure diagram of the present invention.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the B portion enlarged drawing of Fig. 1.
Fig. 4 is water atomization plant structural representation of the present invention.
Fig. 5 is metal atomization apparatus structure schematic diagram of the present invention.
Fig. 6 is the A portion enlarged drawing of Fig. 5.
Fig. 7 is nozzle arrangements schematic diagram of the present invention.
Labelling in accompanying drawing：Platform assembly 1, atomization system assembly 2, control system assembly 3, receipts powder tank 21, water smoke
Gasifying device 20, metal atomization device 20b, water atomization housing 201, nozzle body 202, nozzle body pressure cap 203, nozzle 204, pressure
Plate 205, bolt 206, metal atomization housing 207, quartz curette 209, graphite cup 210, heating coil 211, knocker formula fixation clamp
212nd, weight butterfly hinge 213, M4*10 flat head screw 214, flat head screw 215, heat-resisting snap joint 216, right angle outer cone spiral shell
Stricture of vagina pyrite cutting ferrule 217, copper tube connector 218,3/8 clamp nut 219, sealing ring 220, insulation sleeve 221, thermocouple assembly
222.
Specific embodiment
Below in conjunction with the accompanying drawings the preferred embodiments of the present invention are described in detail, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, thus protection scope of the present invention is made apparent clearly defining.
Refer to shown in accompanying drawing 1 ~ 7, a kind of noble metal atomising device of powder preparation, this metal atomization device is arranged on one
On platform assembly 1, platform assembly 1 is a platform, 2.5 meters from the ground of podium level, and its periphery is by aluminum alloy bar post group
The guardrail becoming, the side of platform is provided with stair, in central authorities' setting aerochamber of platform.
Noble metal atomising device of the present invention includes：
Melting moist closet, aerochamber, inflation system, cyclone dust extractor, receipts powder tank 21, vacuum system, inflation system, water-cooled
System, power supply and electric-control system；
Described atomization interior is provided with：The control system that atomization system assembly 2 is electrically connected with atomization system assembly 2
Assembly 3, atomization system assembly 2, control system assembly 3 are arranged on the central authorities of platform.Described atomization system assembly 2
Portion is mounted with metal atomization device 20b, is provided with water atomization plant 20 on the top bevel of metal atomization device 20b,
Metal atomization device 20b is arranged on the shell body of atomization system assembly 2 by knocker formula fixation clamp 212；Described water atomization
Device 20 includes water atomization housing 201, nozzle body 202, nozzle 204, pressing plate 205, and described water atomization housing 201 is disk
Shape, is internally provided with two-layer toroidal cavity at it, and innermost layer groove edge arranges some nozzles 204, some nozzles 204
Setting nozzle body pressure cap 203 in the ring of encirclement, described nozzle body pressure cap 203 connects nozzle body 202, described nozzle body
202 clutch disk shape pressing plates 205, described pressing plate 205 is fixed on the shell body of atomization system assembly 2 by bolt 206；Institute
State metal atomization device 20b and include graphite cup 210, quartz curette 209, heating coil 211, metal atomization housing 207, fixing machine
Structure, thermocouple assembly 222, described graphite cup 210 is placed in quartz curette 209, coiling heating coil outside quartz curette (209)
211, described heating coil (211) is electrically connected with thermocouple assembly 222, graphite cup 210, quartz curette 209, heating coil 211
After combination, entirety is inserted in metal atomization housing 207.
As shown in Fig. 2 described receipts powder tank 21 is arranged on atomization system assembly 2 lowermost end, receiving powder tank 21 is in cone leakage
Bucket-shaped, occupy the platform lower of platform assembly 1, receive the powder after processing collected by powder tank, receive powder tank and receive powder container for Large Copacity,
1 ~ 1.5 ton of heavy powder can be collected.
As shown in Fig. 4,7, described nozzle 204 is provided with four, is placed in the internal layer groove edge four of water atomization housing 201
In bisector, nozzle 204 injection direction slopes inwardly, and between 75 ~ 85 degree, described nozzle 204 main body is circle at its angle of inclination
Cylinder, cylindrical member at one end edge is arranged to hexaplanar 2042, is easy to die nut rotation, in a side of hexaplanar 2042
One projection 2041 is provided with face, flat recess is arranged on the end face of this projection 2041, flat recess bottom surface is curved, its center
Place is provided with round tube hole, and this round tube hole extends to the cylinder other end of nozzle 204.
As shown in figure 5, described graphite cup 210 is cylindrical shape, two ends through hole, its material uses graphite material, graphite
It is provided with a circle platform rafter, described quartz curette 209 is cylindrical shape, two ends through hole, and its material uses stone at cup 210 edge of opening
English material, is provided with a circle platform rafter at quartz curette 209 edge of opening.Described heating coil 211 turns to cylindrical shape, its inwall away from
From quartz curette 209 outer wall 20 ~ 30mm, its underpart coil is embedded in the recessed circle in metal atomization housing 207 inner bottom surface.Described gold
Belong to atomization housing 207 cylindrical, be each provided with a side ear at the diameter two ends at edge at an upper portion thereof, this side ear is square platform
Column, one of square platform cylinder is provided with four screwed holes, knocker formula fixation clamp 212 is provided with four cheese head screws
215, four cheese head screws 215 are tightened at four screwed holes, and knocker formula fixation clamp 212 is fixed on metal atomization housing 207
On, another square platform cylinder is provided with two screwed holes, by this two screwed holes, metal atomization housing 207 is connected weight
Thing butterfly hinge 213, described weight butterfly hinge 213 is provided with the connecting screw 214 of four M4*10, its top
The connecting screw 214 of two M4*10 connects metal atomization case top lid, upper lid opened by weight butterfly hinge 213 or
Closure, is above covered and is provided with the clip portion mated with knocker formula fixation clamp 212.The capping edge of described metal atomization housing 207
Place is provided with a circle groove, is cased with sealing ring 220, the side wall of described metal atomization housing 207 is provided with 3 on this groove
Circular hole, two of which circular hole is cased with insulation sleeve 221, the 3rd circular hole socket right angle outer cone thread pyrite cutting ferrule 217.Described exhausted
Edge covers and is cased with copper tube connector 218 at 221 internal cavities, and this copper tube connector 218 connects heat-resisting snap joint 216.The present invention's
Implement to enhance the safety that powder by atomization produces under hot mode of operation, the controllability of atomization process technological parameter is high, produces more
Stable, also greatly improve properties of product, produce more energy efficient.Present device compact conformation, handsome in appearance, user
Just, it is easy to keep in repair, there is good versatility and interchangeability.The gas atomization of the present invention is by liquid metal with a high velocity air
Stream is ground into droplet and is frozen into the process of powder, and core is to control the mechanism to metal liquor stream for the gas, makes air-flow
Kinetic energy is converted into new green powder surface energy to greatest extent.Atomization process is a multifactor, complex process for many reference amounts change,
Wherein nozzle is to make atomizing medium (gas etc.) obtain high-energy, high speed the energy quantity set by atomizing medium in atomising device
In pass to the part of motlten metal, the present invention plays an important role to the stability of nebulization efficiency and atomization process, nozzle simultaneously
Structure and performance determine performance and the efficiency of atomized powder.
The foregoing is only the preferred embodiment of the present invention, not thereby limit the scope of the claims of the present invention, every profit
The equivalent structure made with description of the invention and accompanying drawing content or equivalent flow conversion, or directly or indirectly it is used in other phases
The technical field closed, is included within the scope of the present invention.
Claims (9)
1. a kind of noble metal atomising device of powder preparation, this metal atomization device is arranged on a platform assembly（1）On, it wraps
Include：
Melting moist closet, aerochamber, inflation system, cyclone dust extractor, receipts powder tank（21）, vacuum system, inflation system, water-cooled system
System, power supply and electric-control system；
Described atomization interior is provided with：Atomization system assembly（2）, and atomization system assembly（2）The control system of electrical connection
Assembly（3）；
It is characterized in that：Described atomization system assembly（2）Head is mounted with metal atomization device（20b）, in pyrosol
Gasifying device（20b）Top bevel on water atomization plant is installed（20）, metal atomization device（20b）By knocker formula fixation clamp
（212）It is arranged on atomization system assembly（2）Shell body on；
Described water atomization plant（20）Including water atomization housing（201）, nozzle body（202）, nozzle（204）, pressing plate（205）,
Described water atomization housing（201）For discoid, it is internally provided with two-layer toroidal cavity at it, innermost layer groove edge is arranged
Some nozzles（204）, some nozzles（204）The ring of encirclement in setting nozzle body pressure cap（203）, described nozzle body pressure cap
（203）Connection nozzle body（202）, described nozzle body（202）Clutch disk shape pressing plate（205）, described pressing plate（205）Pass through
Bolt（206）It is fixed on atomization system assembly（2）Shell body on；
Described metal atomization device（20b）Including graphite cup（210）, quartz curette（209）, heating coil（211）, metal atomization shell
Body（207）, fixed mechanism, thermocouple assembly（222）, described graphite cup（210）It is placed on quartz curette（209）Interior, in quartz curette
(209) coiling heating coil outside（211）, described heating coil (211) electric connection thermocouple assembly（222）, graphite cup
（210）, quartz curette（209）, heating coil（211）After combination, entirety inserts metal atomization housing（207）Interior.
2. a kind of powder preparation according to claim 1 noble metal atomising device it is characterised in that：Described receipts powder tank
（21）It is arranged on atomization system assembly（2）Lowermost end, receives powder tank（21）In conical funnel shape, occupy platform assembly（1）
Platform lower.
3. a kind of powder preparation according to claim 1 noble metal atomising device it is characterised in that：Described nozzle
（204）It is provided with four, be placed in water atomization housing（201）Internal layer groove edge quarterline on, nozzle（204）Injection side
To inward slant, its angle of inclination between 75 ~ 85 degree, described nozzle（204）Main body is cylinder, and cylindrical member at one end edge sets
It is set to hexaplanar（2042）, it is easy to die nut rotation, in hexaplanar（2042）A side end face on be provided with one convex
Post（2041）, in this projection（2041）End face on flat recess is set, flat recess bottom surface is curved, and it is logical that the center is provided with circle
Hole, this round tube hole extends to nozzle（204）Cylinder other end.
4. a kind of powder preparation according to claim 1 noble metal atomising device it is characterised in that：Described graphite cup
（210）For cylindrical shape, two ends through hole, its material uses graphite material, graphite cup（210）It is provided with a circle at edge of opening
Platform rafter.
5. a kind of powder preparation according to claim 1 noble metal atomising device it is characterised in that：Described quartz curette
（209）For cylindrical shape, two ends through hole, its material uses quartz material, quartz curette（209）It is provided with a circle at edge of opening
Platform rafter.
6. a kind of powder preparation according to claim 1 noble metal atomising device it is characterised in that：Described heating coil
（211）Turn to cylindrical shape, its inwall is apart from quartz curette（209）Outer wall 20 ~ 30mm, its underpart coil is embedded in metal atomization housing
（207）In recessed circle in inner bottom surface.
7. a kind of powder preparation according to claim 1 noble metal atomising device it is characterised in that：Described metal atomization
Housing（207）Cylindrical, it is each provided with a side ear at the diameter two ends at edge at an upper portion thereof, this side ear is square important actor
Shape, one of square platform cylinder is provided with four screwed holes, knocker formula fixation clamp（212）On be provided with four cheese head screws
（215）, four cheese head screws（215）It is tightened at four screwed holes, by knocker formula fixation clamp（212）It is fixed on metal atomization shell
Body（207）On, another square platform cylinder is provided with two screwed holes, by this two screwed holes by metal atomization housing
（207）Connect weight butterfly hinge（213）, described weight butterfly hinge（213）On be provided with the connection spiral shell of four M4*10
Silk（214）, the connecting screw of two M4*10 on its top（214）Connect metal atomization case top lid, upper lid uses butterfly by weight
Shape hinge（213）Open or close, above cover and be provided with and knocker formula fixation clamp（212）The clip portion of coupling.
8. a kind of powder preparation according to claim 1 or 7 noble metal atomising device it is characterised in that：Described metal
Atomization housing（207）Capping edge be provided with a circle groove, this groove is cased with sealing ring（220）, described pyrosol
Change housing（207）Side wall on be provided with 3 circular holes, two of which circular hole is cased with insulation sleeve（221）, the 3rd circular hole socket
Right angle outer cone thread pyrite cutting ferrule（217）.
9. a kind of powder preparation according to claim 8 noble metal atomising device it is characterised in that：Described insulation sleeve
（221）It is cased with copper tube connector at internal cavity（218）, this copper tube connector（218）Connect heat-resisting snap joint（216）.
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| EP0420393A1 (en) * | 1989-09-27 | 1991-04-03 | Crucible Materials Corporation | System and method for atomizing a titanium-based material |
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| CN203992414U (en) * | 2014-08-15 | 2014-12-10 | 西安海德信电气有限公司 | A kind of gold and silver powder by atomization device |
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| CN204912772U (en) * | 2015-07-08 | 2015-12-30 | 深圳市金鼎丰贵金属设备科技有限公司 | Noble metal atomizing device of powder preparation |
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| JPS6199606A (en) * | 1984-10-22 | 1986-05-17 | Hitachi Ltd | Production of composite powder |
| EP0420393A1 (en) * | 1989-09-27 | 1991-04-03 | Crucible Materials Corporation | System and method for atomizing a titanium-based material |
| CN1314224A (en) * | 2000-03-21 | 2001-09-26 | 贵研铂业股份有限公司 | Method and equipment for preparing noble metal and its alloy powder |
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| JP2010007100A (en) * | 2008-06-24 | 2010-01-14 | Hitachi Metals Ltd | Alloy powder and method for producing the same |
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| CN104588671A (en) * | 2015-01-09 | 2015-05-06 | 中国久远高新技术装备公司 | Metal powder preparation method and device based on DC (Direct Current) resistance heating non-contact smelting |
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| CN104985187A (en) | 2015-10-21 |
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