CN105665726B - The twin-jet nozzle that freely lands mixes powder aerosolization water cooling and coagulates metal-base diamond magnetic abrasive preparation method soon - Google Patents
The twin-jet nozzle that freely lands mixes powder aerosolization water cooling and coagulates metal-base diamond magnetic abrasive preparation method soon Download PDFInfo
- Publication number
- CN105665726B CN105665726B CN201610043109.2A CN201610043109A CN105665726B CN 105665726 B CN105665726 B CN 105665726B CN 201610043109 A CN201610043109 A CN 201610043109A CN 105665726 B CN105665726 B CN 105665726B
- Authority
- CN
- China
- Prior art keywords
- abrasive
- diamond
- metal
- magnetic abrasive
- nozzle
- 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.)
- Active
Links
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
- B22F1/06—Metallic powder characterised by the shape of the particles
- B22F1/065—Spherical particles
-
- 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
- B22F1/17—Metallic particles coated with metal
Abstract
A kind of twin-jet nozzle that freely lands mixes powder aerosolization water cooling and coagulates metal-base diamond magnetic abrasive preparation method soon, it is characterised in that：It is the alloy of iron, silicon, aluminium, four kinds of elements of copper composition that the hard abrasive material of magnetic abrasive, which uses diamond dust, metal_based material,；Nozzle is freely landed nozzle using Dual-layer, and the upper layer nozzle that freely lands is that low pressure mixes powder jet nozzle, lower layer's nozzle that freely lands is high pressure draught nozzle；The type of cooling is water cooling, makes to be formed to obtain the magnetic abrasive that is distributed in magnetic abrasive Metal Substrate body surface shallow-layer of diamond abrasive by adjusting height of water level of the cooling water in atomization water cooling chamber to cooling velocity of the control containing diamond abrasive molten drop；It send mixed powder to send meal mixer using spiral, realizes the accurate of diamond abrasive flow.Metal-base diamond magnetic abrasive prepared by the present invention, diamond and metallic matrix are firmly combined with, and there is high magnetic grinding performance, the control of production process program, properties of product to stablize, be suitable for large-scale production.
Description
Technical field
A kind of twin-jet nozzle that freely lands of present invention offer mixes powder aerosolization water cooling and coagulates metal-base diamond magnetic abrasive system soon
Preparation Method belongs to the preparing technical field of composite material.
Background technology
From materialogy angle, magnetic abrasive is a kind of composite material, i.e. iron-based enhanced type composite material, mainly by ferromagnetic phase
With abrasive grain phase composition.Ferromagnetic phase requires good magnetic conductivity and electric conductivity, and common used material is straight iron powder or fe-based alloy powder
End.Abrasive grain is mutually a kind of particulate matter with higher hardness, strength and stability for having grinding, grinding and polishing action concurrently,
Common used material has corundum, diamond, silicon nitride, silicon carbide etc..The chemical composition and its proportioning and structure of magnetic abrasive are to determine
The key factor of magnetic abrasive performance this requires keeping closely combining between ferromagnetic phase and abrasive grain phase, and will have suitably
Granularity, it is also necessary to have a kind of suitable preparation method.
In the prior art there are many kinds of the preparation methods of magnetic abrasive, they can generally be divided into three classes：Mechanical mixture
Method, composite material method, reactive casting method.
Mechanical mixing is that ferromagnetic powder, abrasive powders and lapping liquid etc. is uniformly mixed at normal temperatures by a certain percentage
It closes, the method for being directly ground processing.The ferromagnetic powder and abrasive powders such as Al2O3, SiC of common certain particle size,
Cr2O3, TiC etc. after mixing, add adhesive such as oleic acid, polyethylene glycol, silica gel etc. and are made.This kind of method can be made
At a variety of magnetic abrasives, preparation process is simple, at low cost, but during grinding, abrasive grain is easier with Magnaglo
Separation is dispersed, and grinding efficiency is low, limits application range.
From the point of view of materialogy, magnetic abrasive is a kind of composite powder, i.e. iron-based grains enhanced type composite material
Powder.It is two or more material heterogeneous material made of certain combination process, and performance is specific
Aspect is substantially better than raw material.With the development of composite material, the technology of preparing of magnetic abrasive has also obtained corresponding development,
Preparation process mainly has sintering process, mull technique, composite deposite method etc. there are many kind.
Sintering process is that current magnetic abrasive prepares most common method.In Japan, this method has been applied successfully to work
In the production of industry metaplasia.According to the difference of specific sintering condition, it is divided into as normal pressure-sintered, hot pressed sintering, laser sintered, microwave sintering
Deng.Due to the processing performance and service life of magnetic abrasive, it is largely certainly taken at the bond strength of abrasive grain phase and ferromagnetic phase.
Magnetic abrasive prepared by sintering process, has substantial portion of abrasive material phase and ferromagnetic phase separation in mechanical crushing, screening process, causes
Ferromagnetic phase is combined strength reduction with abrasive grain, and durability declines.
Mull technique is divided into inorganic bond and organic adhesive according to the difference of selected binder, is by certain proportion, mixing
Uniform ferromagnetic powder and abrasive powders are bonded together with binder, are then cured, then mechanical crushing, screening, are made not
The magnetic abrasive powder of one-size.Magnetic abrasive prepared by mull technique need not contain lazy due to not needing advance briquet
The equipment such as electric furnace, the laser machine of property gas, therefore this method is simple for process, easy to implement, cost is relatively low.But tissue looseness, knot
It is poor to close, and density is low, and thermal stability is poor, and abrasive grain is mutually easy to fall off, and the service life is shorter.And when temperature is higher, cohesive magnetic abrasive
Make the surface of processing at furvous, original finished surface is easy contaminated damage.
Certain abrasive grain is equably mingled with metal by the method for composite deposite method composite plating or composite electroless-plating
In coating, and the special coating formed is composite deposite.Compound plating technology is applied in the technology of preparing of magnetic abrasive,
By development for many years, oneself is successfully applied in many sciemtifec and technical spheres composite deposite method, but production cost is higher, batch production
It is difficult to realize, plating solution is dealt with improperly can also cause environmental pollution.
Its principle of reactive casting method is under certain condition, to pass through the chemistry between element and element or element and compound
Reaction, the ceramic enhancement phase of fabricated in situ one or more high intensity in human body are obtaining the alloy containing ceramic enhancement phase
Afterwards, it reheats and melts and be blow molded into powder under high pressure.Reactive casting method presently, there are the problem of be that ceramics are hard in magnetic abrasive
The content of matter abrasive material is low and hard abrasive grain therein also is difficult to control.
Plasma spraying method is after being pre-mixed iron-based powder and hard abrasive grain uniformly by a certain percentage, to place
In the raw material powder feed room of plasma spraying equipment.In the vacuum chamber of plasma spray injection device, applied between two electrodes
Increase frequency discharge voltage, plasma jet flame is generated by plasma generator.The raw material powder mixed is continuous simultaneously
Ground is injected in plasma torch, and plasma torch temperature can reach 5000 ~ 10000 DEG C of high temperature, constantly by raw material powder
It is fused into microlayer model, then cools down, be frozen into Magnetic Spherical abrasive grain.Although this kind of method solves iron-based phase and abrasive material phase
The problem of poor compatibility, but magnetic abrasive prepared by this method is due to the high temperature action by plasma torch, abrasive grain phase it is sharp
Cutting edge is passivated, its grinding efficiency is caused to significantly reduce, the magnetic that grainding capacity is even prepared less than other straightforward procedures
Property abrasive material.
Currently, magnetic abrasive finishing skin processing is that the magnetic abrasive service life is low, cutting power to metal the problem of being primarily present
Difference, preparation are difficult and of high cost.The backwardness of magnetic abrasive Study on Preparation Technology has become and restricts magnetic abrasive finishing skin processing skill
Art further genralrlization application（As free form surface grinds skin processing）Bottleneck problem.For this purpose, the present inventor has invented " aerosolization
Solidifying magnetic abrasive preparation method soon "（ZL201010206408.6）, " equipment for preparing atomized quick-setting magnetic abrasive "
（ZL201110156753.8）, " pneumatic atomizing rapid condensation method prepares the structural form control method of magnetic abrasive "
（ZL201110156741.5）, and preferable effect is achieved in practice, but influence magnetic abrasive there is also some and prepare matter
The key technical problem of amount, such as：
（1）Jet nozzle problem：Due to being to use single nozzle, Dual-Phrase Distribution of Gas olid jet velocity is high, leads to jet nozzle
Quick erosive wear, and fail in extremely short time, the preparation function of magnetic abrasive is lost；Simultaneously or due to being using single
One nozzle, hard abrasive material and high pressure gas are together as atomizing medium, the atomizing effect if Dual-Phrase Distribution of Gas olid effluxvelocity is low
It is bad, abrasive magnetic particles are coarse, but if Dual-Phrase Distribution of Gas olid effluxvelocity is high, although although magnetic abrasive grain size reduces,
It can splash again after hard abrasive material enters molten metal, lead to the hard abrasive material contained in magnetic abrasive metallic matrix
It die-offs, magnetic abrasive machining performance significantly reduces.
（2）The erosive wear problem of molten metal diversion pipe：Using tightly coupled atomizing type, to molten metal liquid stream mist
Before change, Dual-Phrase Distribution of Gas olid is ejected into the lower end of molten metal diversion pipe first, causes in the molten metal diversion pipe lower end short time
Serious erosive wear is generated, and molten metal and high pressure gas is caused to return the danger sprayed along molten metal diversion pipe.
（3）The condensation rate control problem of liquid magnetic abrasive drop：Due to there is no to solve molten state magnetic abrasive drop
Condensation rate accurately control problem, depth distribution of its hard abrasive material of the magnetic abrasive of preparation in metallic matrix is unstable always
It is fixed, the grainding capacity of magnetic abrasive is directly affected, rejection rate is higher.
（4）The content control problem of hard abrasive material in magnetic abrasive：Strength send mixed powder device to accurately control gas due to being difficult to
The flow of hard abrasive material in fixed double phase flow, cause the content of hard abrasive material in magnetic abrasive is unstable, performance of magnetic abrasive not
Stablize.
（5）The erosive wear problem of molten metal diversion pipe：Using tightly coupled atomizing type, to molten metal liquid stream mist
Before change, Dual-Phrase Distribution of Gas olid is ejected into the lower end of molten metal diversion pipe first, causes in the molten metal diversion pipe lower end short time
Serious erosive wear is generated, and molten metal and high pressure gas is caused to return the danger sprayed along molten metal diversion pipe.
Invention content
It can overcome the magnetic abrasive knot that drawbacks described above, manufacturing process are simple, prepare the object of the present invention is to provide a kind of
Conjunction intensity and grinding efficiency is all more satisfactory, is advantageously implemented the magnetic abrasive preparation method of batch production.Its technical solution is：
A kind of twin-jet nozzle that freely lands mixes powder aerosolization water cooling and coagulates metal-base diamond magnetic abrasive preparation method soon, it is characterised in that：
It is the alloy of iron, silicon, aluminium, four kinds of elements of copper composition that the hard abrasive material of magnetic abrasive, which uses diamond dust, metal_based material,；Spray
Mouth is freely landed nozzle using Dual-layer, and the upper layer nozzle that freely lands is that low pressure mixes powder jet nozzle, spray be containing
The low-pressure inert gas of diamond abrasive mixes powder jet stream, and effect is to break through the surface tension of metal liquid stream in downflow processes by Buddha's warrior attendant
Stone mill material is injected in metal liquid stream, but is not atomized to molten metal stream；Lower layer freely land nozzle be high pressure draught nozzle,
What is sprayed is high velocity inert air-flow, and effect is atomized to the molten metal stream for being mixed with diamond abrasive, its atomization is made to become mixed
There is the molten drop of diamond abrasive；The type of cooling is water cooling：Height of water level by adjusting cooling water in atomization water cooling chamber, from
And the flying distance containing diamond abrasive molten drop in being atomized water cooling chamber is controlled, and then control containing diamond abrasive gold
The cooling velocity for belonging to drop, to form the magnetic abrasive that diamond abrasive is distributed in magnetic abrasive Metal Substrate body surface shallow-layer；It send
Mixed powder uses spiral and send meal mixer, realizes low-pressure inert gas and mixes the accurate of diamond abrasive flow in powder jet stream and conveniently
Control so that the stable content of diamond abrasive in magnetic abrasive.
To realize that goal of the invention, the twin-jet nozzle that freely lands mix powder aerosolization water cooling and coagulate metal-base diamond magnetic abrasive system soon
The preparation of Preparation Method, metal-base diamond magnetic abrasive includes the following steps：
1）In diamond abrasive tank（26）The diamond abrasive of middle filling set amount simultaneously screws diamond abrasive cover（25）.
2）Electric furnace is added in metal_based material iron, silicon, aluminium, copper to scale, is heated to molten condition and reaches defined
The degree of superheat.
3）Open cold valves（6）And adjust atomization water cooling chamber（36）Middle cooling water（37）Water level reach defined height.
4）Open air blower（12）, suction atomization water cooling chamber（36）In gas.
5）Open connection high-pressure nitrogen bottle 1（13）With high pressure draught nozzle（34）Between air valve 1（16）And it adjusts to rule
Fixed stream pressure, and water cooling chamber will be atomized（36）In be full of nitrogen so that the metal aerosolization that will be carried out is completely disposed at nitrogen
In the atmosphere of gas.
6）Open connection high-pressure nitrogen bottle 2（14）Powder jet nozzle is mixed with low pressure（33）Between air valve 2（15）And it adjusts
To defined stream pressure.
7）Start helix transporting device（24）And control powder feed rate by technological requirement.
8）By electric furnace（30）In molten metal uniformly pour into heat preservation crucible（31）In, and regulation liquid level is kept, directly
To electric furnace（30）In molten metal to the greatest extent until.
9）In heat preservation crucible（31）After middle molten metal is all flow to end, helix transporting device is closed in order（24）, air valve 1
（16）, air valve 2（15）, air blower（12）.
10）Closing gate valve（5）So that atomization water cooling chamber（36）It is filled with magnetic abrasive（39）Between close, open discharging valve
（1）So that magnetic abrasive fills（39）In water outflow, open press filtration air valve（4）So that high pressure gas enters magnetic abrasive filling（39）
Inner cavity in, strainer（2）Magnetic abrasive is blocked in magnetic abrasive to fill（39）Epicoele in, and water therein is forced to squeeze out；
Magnetic abrasive is filled（39）It removes, takes out magnetic abrasive therein, by vacuum drying, screening and packaging, to obtain difference
The magnetic abrasive of granularity.
Compared with prior art, the present invention having the following advantages that：
1, as a result of the double-deck nozzle that freely lands of high-low pressure, freely land nozzle its effect of upper layer is flowed through under breaking through
The surface tension of metal liquid stream injects diamond abrasive in metal liquid stream in journey, but is not atomized to molten metal stream, upper layer
Nozzle its effect of freely landing is atomized to the molten metal stream for being mixed with diamond abrasive, so that its atomization is become and is mixed with diamond
The injection mixing of metal liquid stream diamond abrasive is efficiently separated with atomization, is avoided single by the molten drop of abrasive material, this method
Diamond abrasive caused by nozzle atomization splashes, waste and abrasive magnetic particles size are uneven, diamond abrasive content unevenness is asked
Topic, ensure that abrasive magnetic particles size, the uniformity and controllability of magnetic abrasive diamond abrasive content.
2, due to upper layer freely land nozzle to molten metal stream be atomized thus injection diamond abrasive air-flow pressure
Power is low, efficiently solves the problems, such as the erosive wear to nozzle containing diamond abrasive.
3, as a result of the nozzle that freely lands, molten metal diversion pipe is located at the top of two nozzles, and two nozzles spray
Air-flow be all not directly placed on the lower end of metal diversion pipe, avoid the high speed that close coupled system nozzle contains hard abrasive material
Air-flow also avoids the molten metal caused by molten metal conductance pipe erosive wear to the serious erosive wear of metal diversion pipe
Problem is sprayed in reflux.
4, metallic copper is added in metal_based material, effectively increases metal_based material and diamond abrasive in magnetic abrasive
The bond strength of particle.
5, the type of cooling that water cooling is coagulated soon is used, solves in magnetic abrasive diamond abrasive grains from metallic matrix
Dissociate and go out the problem with depth distributed controll, the table shallow-layer that diamond abrasive is distributed in magnetic abrasive can be controlled so that system
Standby magnetic abrasive magnetic permeability is high, grainding capacity is strong, while significantly reducing the distance of mixed flour gold category droplet flight, reduction
Freely land and be atomized the whole height of water cooling chamber and equipment, reduces cost.
6, it uses spiral and send meal mixer, solve and mixed powder device is sent to be difficult to accurately control hard abrasive material in Dual-Phrase Distribution of Gas olid
The problem of flow so that the stable content of hard abrasive material in magnetic abrasive.
7, the addition of silicon, aluminium, copper, effectively prevents diamond in water cooling is coagulated soon Cooling Mode and metal_based material
There is a phenomenon where chemical reactions, and the forfeiture of magnetic abrasive machining performance to be caused to occur with iron, and increases metal_based material and Buddha's warrior attendant stone mill
Bond strength between material.
8, the technical process of the invention for preparing magnetic abrasive can realize automation, stable and reliable for performance, be suitable for high-performance gold
Belong to the large-scale production of base diamond magnetic abrasive.
Description of the drawings
Fig. 1 is that the twin-jet nozzle that freely lands that the present invention uses mixes powder aerosolization water cooling solidifying metal-base diamond magnetic abrasive soon
Preparation equipment schematic diagram, wherein：1- discharging valves, 2- strainers, 3- magnetic abrasives, 4- press filtration air valves, 5- gate valves, 6- cold valves, 7-
Water seal tank body, 8- water seal water, 9- inlet valves, 10- intake valves, 11- air inlet pipe, 12- drainpipes, 13- high-pressure nitrogen bottles 1,14-
High-pressure nitrogen bottle 2,15- air valves 2,16- air valves 1,17- spirals send meal mixer, 18- tracheaes 3,19- tracheaes 1,20- air gauges 1,
21- air gauges 2,22- tracheaes 2,23- tracheaes 4,24- helix transporting devices, 25- diamond abrasive covers, 26- diamond abrasives
Tank, 27- hard abrasive materials, the mixed powder tracheaes of 28-, 29- molten metals, 30- electric furnaces, 31- heat preservation crucibles, 32- molten metal diversion pipes,
33- low pressure mixes powder jet nozzle, 34- high pressure draught nozzles, 35- water-level gauges, 36- atomizations water cooling chamber, 37- cooling waters, 38- atomizations
Water cooling room housing, 39- magnetic abrasive tanks, 40- cross drainage, 41- two-nozzle atomization water cooling plants, 42- suction dust collecting devices, 43-
Air blower, 44- gas station.
Specific implementation mode
Embodiment 1
The preparation of metal-base diamond magnetic abrasive includes the following steps：
1）In diamond abrasive tank（26）The diamond abrasive of middle filling set amount simultaneously screws diamond abrasive cover（25）.
2）Metal_based material presses iron:Silicon:Aluminium:Copper=83%:9%:6%:2% weight ratio is added electric furnace and is heated to molten condition
And reach the defined degree of superheat.
3）Open cold valves（6）And adjust atomization water cooling chamber（36）Middle cooling water（37）Water level reach defined height.
4）Open air blower（12）, suction atomization water cooling chamber（36）In gas.
5）Open connection high-pressure nitrogen bottle 1（13）With high pressure draught nozzle（34）Between air valve 1（16）And it adjusts to rule
Fixed stream pressure, and water cooling chamber will be atomized（36）In be full of nitrogen so that the metal aerosolization that will be carried out is completely disposed at nitrogen
In the atmosphere of gas.
6）Open connection high-pressure nitrogen bottle 2（14）Powder jet nozzle is mixed with low pressure（33）Between air valve 2（15）And it adjusts
To defined stream pressure.
7）Start helix transporting device（24）And control powder feed rate by technological requirement.
8）By electric furnace（30）In molten metal uniformly pour into heat preservation crucible（31）In, and regulation liquid level is kept, directly
To electric furnace（30）In molten metal to the greatest extent until.
9）In heat preservation crucible（31）After middle molten metal is all flow to end, helix transporting device is closed in order（24）, air valve 1
（16）, air valve 2（15）, air blower（12）.
10）Closing gate valve（5）So that atomization water cooling chamber（36）It is filled with magnetic abrasive（39）Between close, open discharging valve
（1）So that magnetic abrasive fills（39）In water outflow, open press filtration air valve（4）So that high pressure gas enters magnetic abrasive filling（39）
Inner cavity in, strainer（2）Magnetic abrasive is blocked in magnetic abrasive to fill（39）Epicoele in, and water therein is forced to squeeze out；
Magnetic abrasive is filled（39）It removes, takes out magnetic abrasive therein, by vacuum drying, screening and packaging, to obtain difference
The magnetic abrasive of granularity.
Claims (2)
1. the twin-jet nozzle that freely lands mixes powder aerosolization water cooling coagulates metal-base diamond magnetic abrasive preparation method soon, feature exists
In：It is the conjunction of iron, silicon, aluminium, four kinds of elements of copper composition that the hard abrasive material of magnetic abrasive, which uses diamond dust, metal_based material,
Gold；Nozzle is freely landed nozzle using Dual-layer, and the upper layer nozzle that freely lands is that low pressure mixes powder jet nozzle, and what is sprayed is
Low-pressure inert gas containing diamond abrasive mixes powder jet stream, and effect is to break through the surface tension general of metal liquid stream in downflow processes
Diamond abrasive is injected in metal liquid stream, but is not atomized to molten metal stream；Nozzle is freely landed as high pressure draught spray in lower layer
Mouth, what is sprayed is high velocity inert air-flow, and effect is atomized to the molten metal stream for being mixed with diamond abrasive, it is made to be atomized into
To be mixed with the molten drop of diamond abrasive；The type of cooling is water cooling：It is high by adjusting water level of the cooling water in atomization water cooling chamber
Degree, the flying distance to control containing diamond abrasive molten drop in being atomized water cooling chamber, and then control and contain diamond
The cooling velocity of abrasive material molten drop, to form the magnetic mill that diamond abrasive is distributed in magnetic abrasive Metal Substrate body surface shallow-layer
Material；Mixed powder is sent to send meal mixer using spiral so that the stable content of diamond abrasive in magnetic abrasive.
2. the twin-jet nozzle according to claim 1 that freely lands mixes powder aerosolization water cooling and coagulates metal-base diamond magnetic abrasive soon
Preparation method, it is characterised in that the preparation process of metal-base diamond magnetic abrasive is as follows：
1）In diamond abrasive tank（26）The diamond abrasive of middle filling set amount simultaneously screws diamond abrasive cover（25）；
2）Electric furnace is added in metal_based material iron, silicon, aluminium, copper to scale, is heated to molten condition and reaches defined overheat
Degree；
3）Open cold valves（6）And adjust atomization water cooling chamber（36）Middle cooling water（37）Water level reach defined height；
4）Open air blower（12）, suction atomization water cooling chamber（36）In gas；
5）Open connection high-pressure nitrogen bottle 1（13）With high pressure draught nozzle（34）Between air valve 1（16）And it adjusts to defined
Stream pressure, and water cooling chamber will be atomized（36）In be full of nitrogen so that the metal aerosolization that will be carried out is completely disposed at nitrogen
In atmosphere；
6）Open connection high-pressure nitrogen bottle 2（14）Powder jet nozzle is mixed with low pressure（33）Between air valve 2（15）And it adjusts to rule
Fixed stream pressure；
7）Start helix transporting device（24）And control powder feed rate by technological requirement；
8）By electric furnace（30）In molten metal uniformly pour into heat preservation crucible（31）In, and keep regulation liquid level, Zhi Dao electricity
Stove（30）In molten metal to the greatest extent until；
9）In heat preservation crucible（31）After middle molten metal is all flow to end, helix transporting device is closed in order（24）, air valve 1
（16）, air valve 2（15）, air blower（12）；
10）Closing gate valve（5）So that atomization water cooling chamber（36）With magnetic abrasive tank（39）Between close, open discharging valve（1）Make
Obtain magnetic abrasive tank（39）In water outflow, open press filtration air valve（4）So that high pressure gas enters magnetic abrasive tank（39）It is interior
In chamber, strainer（2）Magnetic abrasive is blocked in magnetic abrasive tank（39）Epicoele in, and water therein is forced to squeeze out；
11）By magnetic abrasive tank（39）It removes, takes out magnetic abrasive therein, by vacuum drying, screening and packaging, to obtain
To varigrained magnetic abrasive；
12）In above process, temperature, the helix transporting device of molten metal are controlled according to technological requirement（24）Powder feeding speed
Degree, low pressure mix powder jet nozzle（33）With high pressure draught nozzle（34）Injection pressure, cooling water（37）In atomization water cooling chamber
（36）In water level, good magnetic abrasive can be generated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610043109.2A CN105665726B (en) | 2016-01-23 | 2016-01-23 | The twin-jet nozzle that freely lands mixes powder aerosolization water cooling and coagulates metal-base diamond magnetic abrasive preparation method soon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610043109.2A CN105665726B (en) | 2016-01-23 | 2016-01-23 | The twin-jet nozzle that freely lands mixes powder aerosolization water cooling and coagulates metal-base diamond magnetic abrasive preparation method soon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105665726A CN105665726A (en) | 2016-06-15 |
| CN105665726B true CN105665726B (en) | 2018-08-31 |
Family
ID=56302167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610043109.2A Active CN105665726B (en) | 2016-01-23 | 2016-01-23 | The twin-jet nozzle that freely lands mixes powder aerosolization water cooling and coagulates metal-base diamond magnetic abrasive preparation method soon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105665726B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2749789C1 (en) * | 2020-10-01 | 2021-06-16 | Государственное Научное Учреждение "Объединенный Институт Машиностроения Национальной Академии Наук Беларуси" | Method for obtaining powder for magnetic-abrasive processing |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109504346B (en) * | 2018-11-20 | 2021-02-26 | 天津百恩威新材料科技有限公司 | Diamond micropowder-copper-based alloy composite material particle and preparation method thereof |
| CN110016601B (en) * | 2019-05-22 | 2020-05-22 | 中国矿业大学 | Nickel-chromium-diamond alloy composite powder and preparation method and application thereof |
| CN113150743A (en) * | 2021-04-19 | 2021-07-23 | 山东理工大学 | Method for preparing fast-setting magnetic abrasive by combining brazing enhanced plasma molten metal micro-droplets and abrasive powder |
| CN114214033B (en) * | 2021-12-08 | 2023-06-27 | 绍兴自远磨具有限公司 | Magnetic abrasive for workpiece grinding and preparation process thereof |
| CN114367667B (en) * | 2022-01-10 | 2022-10-14 | 北京德普润新材料科技有限公司 | Novel powder collecting system of gas atomization powder process equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1298031A (en) * | 1969-06-18 | 1972-11-29 | Republic Steel Corp | Apparatus and process for producing metal powder |
| EP0262869A1 (en) * | 1986-09-24 | 1988-04-06 | Alcan International Limited | Particulate Al alloy composites |
| WO1992001525A1 (en) * | 1990-07-19 | 1992-02-06 | Osprey Metals Limited | Device for introducing particulate material |
| EP0682578B1 (en) * | 1993-02-06 | 2000-04-12 | Behr South Africa (Pty) Limited | Production of powder |
| CN102250584A (en) * | 2011-06-11 | 2011-11-23 | 山东理工大学 | Equipment for preparing atomized quick-setting magnetic abrasive |
| CN102328091A (en) * | 2011-06-11 | 2012-01-25 | 山东理工大学 | Powder feeding and mixing device for preparing magnetic grinding material through atomization and rapid solidification and powder feeding and mixing method |
-
2016
- 2016-01-23 CN CN201610043109.2A patent/CN105665726B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1298031A (en) * | 1969-06-18 | 1972-11-29 | Republic Steel Corp | Apparatus and process for producing metal powder |
| EP0262869A1 (en) * | 1986-09-24 | 1988-04-06 | Alcan International Limited | Particulate Al alloy composites |
| WO1992001525A1 (en) * | 1990-07-19 | 1992-02-06 | Osprey Metals Limited | Device for introducing particulate material |
| EP0682578B1 (en) * | 1993-02-06 | 2000-04-12 | Behr South Africa (Pty) Limited | Production of powder |
| CN102250584A (en) * | 2011-06-11 | 2011-11-23 | 山东理工大学 | Equipment for preparing atomized quick-setting magnetic abrasive |
| CN102328091A (en) * | 2011-06-11 | 2012-01-25 | 山东理工大学 | Powder feeding and mixing device for preparing magnetic grinding material through atomization and rapid solidification and powder feeding and mixing method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2749789C1 (en) * | 2020-10-01 | 2021-06-16 | Государственное Научное Учреждение "Объединенный Институт Машиностроения Национальной Академии Наук Беларуси" | Method for obtaining powder for magnetic-abrasive processing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105665726A (en) | 2016-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105665726B (en) | The twin-jet nozzle that freely lands mixes powder aerosolization water cooling and coagulates metal-base diamond magnetic abrasive preparation method soon | |
| CN105665719B (en) | Mixed powder aerosolization water cooling of freely landing coagulates magnetic abrasive Preparation equipment soon | |
| CN105665723B (en) | The twin-jet nozzle that freely lands mixes powder aerosolization water cooling and coagulates Metal Substrate silicon carbide magnetic abrasive material preparation method soon | |
| CN102250584B (en) | Equipment for preparing atomized quick-setting magnetic abrasive | |
| CN105665727B (en) | The twin-stage that freely lands mixes powder aerosolization water cooling and coagulates magnetic abrasive preparation method fastly | |
| CN102328091B (en) | Powder feeding and mixing device for preparing magnetic grinding material through atomization and rapid solidification and powder feeding and mixing method | |
| CN105665722B (en) | The twin-jet nozzle that freely lands mixes powder aerosolization water cooling and coagulates Metal Substrate aluminium oxide magnetic abrasive preparation method soon | |
| CN105665728B (en) | The twin-jet nozzle that freely lands mixes powder aerosolization water cooling and coagulates metal base titanium carbide magnetic abrasive preparation method soon | |
| CN105618770B (en) | Mixed powder aerosolization magnetic abrasive preparation send meal mixer with spiral automatic and accurate | |
| CN105665720B (en) | Free fall style mixes powder aerosolization magnetic abrasive and prepares twin-stage atomising device | |
| CN202175648U (en) | Equipment for preparing aerosolized quickly-coagulated magnetic grinding material | |
| JPH05502478A (en) | Melt spray nozzle and melt spray method | |
| CN112427646A (en) | Method for preparing magnetic abrasive material by supercritical carbon dioxide assisted plasma spray | |
| CN102277132A (en) | Structural form control method for preparing magnetic grinding materials by air atomization quick-setting process | |
| CN105665725B (en) | The twin-jet nozzle that freely lands mixes powder aerosolization water cooling and coagulates Metal Substrate CBN magnetic abrasive preparation methods soon | |
| CN105665721B (en) | The twin-jet nozzle that freely lands mixes powder aerosolization water cooling and coagulates Metal Substrate chromium oxide magnetic abrasive preparation method soon | |
| CN110981445A (en) | Preparation method of oxide ceramic powder for laser 3D printing | |
| CN106747468B (en) | Drain tube material and preparation method thereof for aerosolization titanium or titanium alloy powder | |
| CN107052354A (en) | A kind of device and method for preparing high sphericity 3D printing refractory metal powder | |
| CN105618769B (en) | Mixed powder aerosolization water cooling coagulates water cooling prepared by magnetic abrasive and coagulates method and water cooling solidifying device soon soon soon | |
| CN115703094A (en) | Gas-liquid coaxial self-excitation resonant cavity type atomization injection device and preparation method thereof | |
| CN107999776A (en) | A kind of preparation process of 3D printing metal dust | |
| CN104193351B (en) | Take red mud as fracturing propping agents production system and the production method of raw material | |
| CN109454227A (en) | The preparation method of TiCN based ceramic metal mixture | |
| CN202174244U (en) | Air atomization rapid solidification magnetic abrasive preparing, feeding and mixing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |