CN107116225A - A kind of method of integral type induction melting gas-atomized powder device and gas-atomized powder - Google Patents
A kind of method of integral type induction melting gas-atomized powder device and gas-atomized powder Download PDFInfo
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- CN107116225A CN107116225A CN201710358256.3A CN201710358256A CN107116225A CN 107116225 A CN107116225 A CN 107116225A CN 201710358256 A CN201710358256 A CN 201710358256A CN 107116225 A CN107116225 A CN 107116225A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- 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
- B22F2009/0836—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 with electric or magnetic field or induction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0844—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 in controlled atmosphere
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0888—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 casting construction of the melt process, apparatus, intermediate reservoir, e.g. tundish, devices for temperature control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0892—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 casting nozzle; controlling metal stream in or after the casting nozzle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0896—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 particle transport, separation: process and apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The invention provides a kind of method of integral type induction melting gas-atomized powder device and gas-atomized powder; wherein device includes gas-atomized powder device; the gas-atomized powder device includes support frame, aerosolization crucible; support frame as described above is provided with the quartz ampoule for being used for collecting alloy powder, and one end of the quartz ampoule is connected with the alundum tube for being passed through protective gas；Support frame as described above is provided with induction coil, and the aerosolization crucible is located in induction coil, and the bottom of the aerosolization crucible is provided with nozzle, and the nozzle is towards the inside of quartz ampoule；The axis of the nozzle of the aerosolization crucible is vertical with the axis of quartz ampoule；The opening of the alundum tube is towards the exit of nozzle；The openend of the quartz ampoule passes through plug seal.This apparatus structure is simple, floor space is small, assembling is easy, is not in liquid plug nozzle phenomenon in pulverizing process, while can change the flow for being passed through gas, to change the particle diameter distribution ratio for preparing powder.
Description
Technical field
The present invention relates to a kind of gas-atomized powder equipment, filled more particularly, to a kind of integral type induction melting gas-atomized powder
Put and gas-atomized powder method.
Background technology
Gas atomization powder-making technique is the main method for producing metal and alloy powder, and the principle of its powder processed is to use high speed gas
The flow of liquid metal flowed out from catheter is ground into droplet and in the subsequent process for being in-flight frozen into powder by stream.Aerosol
Changing powder has the advantages that powder size is controllable, oxygen content is low, suitable for the production of various metals and alloy powder, it has also become high
Main way prepared by performance and special alloy powder.Exist with the appearance and dusty material of powder metallurgy new technology new material
Application in the industry such as chemical industry, electronic device preparation, Surface Engineering and military affairs, for powder in the side such as purity, tiny, sphericity
The requirement in face is improved constantly, so as to further promote the development of powder aerosolization method technology of preparing.
Metal bath becomes droplet after being atomized through high pressure draught, droplet down in-flight continuous cooled and solidified into powder
End.The oxygen content of powder is continually changing with shape in process of setting, when conditions permit, and the oxygen content of powder can reach relatively low
Level, shape is spherical in shape.It is generally acknowledged that high sphericity, the low powder of oxygen content needs to prepare under vacuum, it is antivacuum
Under the conditions of prepare it is general more difficult.But vacuum atomizing fuel pulverizing plant is complicated, manufacture and maintenance cost are high, the powder produced
Do not possess cost advantage.Further research and practice have shown that, the 26S Proteasome Structure and Function configuration of atomising device is to controlling the oxygen of powder
Content and shape have substantial connection, and antivacuum atomising device can realize high sphericity, the preparation of the powder of low oxygen content.
At present, traditional gas-atomized powder equipment melting is separated with current limliting running gate system, is caused in powder preparing processes,
Have and necessarily contact with oxygen so that prepare oxygen content in power height or easy oxidation metal complete oxidation, reduce powder usability
Energy.Also it is melting and pouring integrated structure to have some gas-atomized powder equipment, but vaccum requirement is high mostly for its equipment, structure
It is excessively complicated, troublesome poeration, maintenance difficult, and it is expensive, for the gas atomization device of antivacuum property requirement, its spray chamber
Volume is general and larger, is unfavorable for control climate.Meanwhile, it is domestic at present generally to use non-limiting atomizer, prepare powder
Particle diameter tinyization is difficult, also there is the design of some special nozzles, but structure is relative complex.High pressure is used during aerosolization mostly
Gas ejects metal belt from spray chamber to form powder particle, and nozzle is easily blocked.
The content of the invention
For above technical problem, the invention discloses a kind of integral type induction melting gas-atomized powder device and aerosolization
The method of powder processed, simple in construction, floor space is small, assembling is easy and the low protective atmosphere of aerosolization pressure under melting aerosol
It is not in liquid plug nozzle phenomenon to change in powder manufacturing apparatus, pulverizing process, while can change the flow for being passed through gas, to change
Change prepares the particle diameter distribution ratio of powder.
In this regard, the technical solution adopted by the present invention is：
A kind of integral type induction melting gas-atomized powder device, it includes gas-atomized powder device, and the smelting apparatus is placed in sense
Answer in firing equipment；The gas-atomized powder device includes support frame, aerosolization crucible, and support frame as described above, which is provided with, to be used to collect
The quartz ampoule of alloy powder, one end of the quartz ampoule is connected with the alundum tube for being passed through protective gas；Support frame as described above is provided with
Induction coil, the aerosolization crucible is located in induction coil, and the bottom of the aerosolization crucible is provided with nozzle, the nozzle court
The inside of quartz ampoule；The axis of the nozzle of the aerosolization crucible is vertical with the axis of quartz ampoule；The opening of the alundum tube
Towards the exit of nozzle；The openend of the quartz ampoule passes through plug seal；The aerosolization crucible is provided with and extraneous gas cylinder
Connected air inlet.
Using this technical scheme, the aerosolization crucible with nozzle and air inlet realizes the instillation of alloy liquid, and two ends are opened
The collection of atomized powder is realized at mouth end by the quartz ampoule of plug seal, and the holding molten metal small crucible and quartz ampoule are close
It is connected, spray chamber and preliminary sieve compartment carry out powder aerosolization preparation in quartz ampoule using the design being vertically atomized.Aerosol
Change the axis of nozzle of crucible perpendicular to quartz ampoule axis, the vertical atomization of realization, this is thrown to allow the powder after being atomized to make to put down
Motion, it is possible to achieve allow the larger spherical powder of particle diameter from nozzle allowed compared near the less spherical powder of particle diameter from nozzle farther out with
Realize the preliminary screening to powder.
As a further improvement on the present invention, the nozzle is inverted pyramidal structures, and the angle of the angulus pyramidis of the nozzle is
75~85°.Using the nozzle of this angle, in order to which molten metal can be stayed for some time due to surface tension effects in nozzle
And molten metal can flow rapidly into spray chamber and is atomized when increasing the gas flow being passed through in nozzle.
Further, aerosolization crucible has a cylinder air inlet to be connected with extraneous gas cylinder in the atomising device, atomization process
In be passed through protective gas.
As a further improvement on the present invention, the angle of the angulus pyramidis of the nozzle is 80 °.Aerosolization crucible bottom nozzle
Using 80 ° of conical designs, angle be 80 ° be in order to allow molten metal due to surface tension effects can stop one section in nozzle when
Between and when increasing the gas flow being passed through in nozzle, molten metal can flow rapidly into spray chamber and is atomized, small crucible bottom and
The manhole of quartz ampoule side is compact to be connected, and ensures small crucible axis perpendicular to quartz ampoule axis, realizes vertical atomization, this
It is to allow the powder after atomization to make level throw motion, it is possible to achieve make the larger spherical powder of particle diameter relatively near from nozzle and allow particle diameter
Less spherical powder is from nozzle farther out to realize the preliminary screening to powder.
Further, aerosolization crucible is equipped with being interference fit between a crucible cover and crucible, and in the company worked good
Place's one layer of plasticine of cladding is connect, crucible cover top has an annulus conveniently to take；Small crucible is used with support frame coil and is mechanically fixed,
Periphery only has induction coil, for melted alloy.
As a further improvement on the present invention, the alundum tube is connected by air pressure valve with gas cylinder；The aerosolization crucible
It is connected by gas flowmeter with extraneous gas cylinder.
As a further improvement on the present invention, the quartzy catch of at least two semicolumns is provided with the quartz ampoule.
As a further improvement on the present invention, the quartzy catch provided with 4 pieces of semicolumns inside the quartz ampoule, adjusts them
The distance between preliminary screening to different sphere diameter powder can be achieved.
As a further improvement on the present invention, the alundum tube is porous alundum tube；The oral area of the quartz ampoule is provided with and beaten
The solid silica gel plug in hole, the solid silica gel plug of punching is with quartz ampoule using interference fit.
As a further improvement on the present invention, it includes smelting apparatus, and the smelting apparatus is placed in induction heating equipment；
The smelting apparatus includes being provided with the second melting container in the first melting container and melt container lid, first melting container；
The melt container is covered provided with protective gas import and protective gas outlet；Hold in first melting container with the second melting
Thermal insulation layer is provided between device, the material of the thermal insulation layer is alumina silicate cotton.The melt container is covered to be entered provided with protective gas
Mouth and protective gas outlet, it is to avoid contact of the alloy with oxygen in fusion process, reduce the oxygen content of final alloy powder.It is described
Induction heating equipment is induction coil.
Further, first melting container is a quartz curette with cylindrical hole, and second melting container is
Melting ceramic crucible, quartz curette is configured with a quartz cover containing cylindrical hole.
As a further improvement on the present invention, support frame as described above uses stretching structure.
As a further improvement on the present invention, the opening of the quartz ampoule is in close contact with jet hole；
As a further improvement on the present invention, the exit of the nozzle of the alundum tube alignment aerosolization crucible, will be real with adhesive tape
Heart silica gel plug cements quartz ampoule.
As a further improvement on the present invention, there is an O junction when quartz curette of the smelting apparatus is closed with quartz cover
Type circle, while being fastened with hex bolts and nut, to realize the sealing of device.
The quartz curette and quartz cover of the smelting apparatus are provided with cylindrical hole, protective gas during respectively as molten alloy
Import and export, it is to avoid contact of the alloy with oxygen in fusion process, reduce the oxygen content of final alloy powder.
Further, the alumina silicate with good effect of heat insulation is used between melting ceramic crucible outer wall and quartzy inside pipe wall
Cotton layer, it is to avoid the too high quartz curette by outer layer of crucible temperature melts in fusion process.
Further, the complete smelting apparatus of device is put into load coil, by adjusting size of current, can be quick
Realize the melting of alloy.
Further, quartz ampoule two ends are plugged with the middle solid silica gel plug for beating mouth in the atomising device, adopt therebetween
With interference fit；Solid silica gel plug, which is beaten at mouth, inserts porous alundum tube, and is fastened with fluid sealant, porous alundum tube and peripheral silicon
Sebific duct is fastened with clip, realizes the inflow and outflow of protective gas.
Further, gas flowmeter is mechanically anchored on support frame in the atomising device, is connected to gas cylinder and is filled with atomization
Put between air inlet, quantify particle diameter ratio of the gas flow to control atomized alloy powder.
Further, the support frame in the atomising device is provided with coil, can be used for fixing aerosolization crucible；There are four
Side has the stainless steel tube of screw thread mouth, and support frame height can be adjusted by bolt；There is a groove centre to fixed quartz
Pipe.
Enter the invention discloses a kind of integral type induction melting gas-atomized powder device using described in as above any one
The method of promoting the circulation of qi powder by atomization, comprises the following steps：
Step S1, smelting apparatus interior sealing is placed in by the metal necessarily matched, and is passed through protective gas, opens induction heating equipment
Heated, close induction heating equipment when alloy is in complete molten condition and be cooled to complete curdled appearance, so weight
It is multiple three times, room temperature is cooled to, gas is closed；Take out foundry alloy and cut；
Step S2, the obtained alloys of step S1 are put into aerosolization crucible, and cover aerosolization crucible cover, and control enters gas
The gas flow of crucible is atomized to protect foundry alloy fusion process not oxidized, and controls the air pressure into alundum tube to make it
Reach aerosolization pressure value；It is preferred that, the gas flow controlled into aerosolization crucible is 0.1m3/h。
Step S3, is heated to induction coil energization, foundry alloy in aerosolization crucible melting, after increased after 5 ~ 10 s into
Enter the gas flow of aerosolization crucible, realize powder by atomization.
Above-mentioned technical proposal, thus it is possible to vary be passed through the flow of gas, to change the particle diameter distribution ratio for preparing powder.
As a further improvement on the present invention, provided with the quartzy catch of semicolumn, the semicolumn quartz in the quartz ampoule
Spacing is provided between catch；The method of the gas-atomized powder is further comprising the steps of：
Step S4, atomization terminates, and closes sensing heating switch, closes gas, take aerosolization crucible away, opens silicon on the right side of quartz ampoule
Plug, the powder in quartz ampoule is poured into the standard sample sieve more than 800 mesh, screened more than 3 times, that is, obtains most thin required powder
End；Remove again in the quartzy catch of one piece of semicolumn farthest from nozzle, the standard sample sieve that powder is poured into 400-800 mesh, screening 3
More than secondary, that is, obtain relatively thin required powder；Then remove successively from nozzle opening from as far as the quartzy catch of near semicolumn, by powder
End is poured into the standard screen of corresponding mesh number, and the powder larger to sphere diameter is screened successively.Namely then remove successively apart from nozzle
The quartzy catch of increasingly nearer semicolumn, powder is poured into the standard screen of corresponding smaller mesh number, the powder larger to sphere diameter is successively
Screening.
Further, the quartzy catch of 4 pieces of semicolumns is placed inside quartz ampoule in the atomising device, is adjusted between them
Distance preliminary screening to different sphere diameter powder can be achieved.
Further, the quartzy catch of the semicolumn is followed successively by 140cm, 90cm, 50cm, 20cm apart from the opening of nozzle.
Further, when being continuously atomized, repeat step S2 and step S3 after aerosolization crucible cover is opened.
Compared with prior art, beneficial effects of the present invention are：
First, simple in construction slim and graceful using technical scheme, suitable for carrying, service life is long, and atomizing pressure is low, tears open
Dress is convenient, and floor space is small, and using sensing heating low energy consumption environment protection, and manufacturing cost is cheap, powder effect processed is good, is applicable very much
In research and development experimental exploring application, experimental stage funds are reduced；The device realizes the preliminary screening to different sphere diameter powder, realizes and protects
Hold the integration of molten alloy small crucible, spray chamber and collecting chamber.
Second, using technical scheme, the device need to only be passed through protective gas（Such as nitrogen）Just it can be used, phase
Ensure that vacuum condition use condition is looser for some equipment are harsh；The device is by adding gas flowmeter, Ke Yitong
Overregulate the particle diameter distribution that gas flow control prepares powder.
3rd, using technical scheme, the device uses what is be vertically atomized to set using 80 ° of conical nozzles
Meter, reduces aerosolization pressure, strengthens the scattered of alloy liquid droplet, it is to avoid spray nozzle clogging, powder fine uniform is prepared, while can improve
Cooling velocity, can be achieved the efficient preparation of alloy powder and amorphous powdered alloy.
4th, using technical scheme, each component retrieval used in the device is convenient, connects simple each other,
Anywhere broken down in application process, without professional, just can be debugged quickly or related components replacing,
Maintenance time is substantially reduced, milling efficiency is improved.
Brief description of the drawings
Fig. 1 is induction melting device front view in a kind of integral type induction melting gas-atomized powder device of the invention.
Fig. 2 is induction melting device top view in a kind of integral type induction melting gas-atomized powder device of the invention.
Fig. 3 is gas-atomized powder device front view in a kind of integral type induction melting gas-atomized powder device of the invention.
Fig. 4 is gas-atomized powder device top view in a kind of integral type induction melting gas-atomized powder device of the invention.
Fig. 5 is gas-atomized powder device left view in a kind of integral type induction melting gas-atomized powder device of the invention.
Fig. 6 be in a kind of integral type induction melting gas-atomized powder device of the invention in gas-atomized powder device small crucible and
Crucible cover sectional view.
The Cu-Sn alloy powders SEM figures that Fig. 7 is prepared for a kind of integral type induction melting gas-atomized powder device of the invention.
Reference includes：1- hex bolts, 2- hex nuts, 3- smelting quartz lids, 4- smelting quartzs cup, 5-O types
Circle, 6- alumina silicate cottons, 7- melting kettles, 8- aerosolization small crucible lids, 9- aerosolization small crucibles, 10- alundum tubes, 11- silica gel
Plug, 12- quartz ampoules, 13- support frames, 14- screws, 15- gas flowmeters, 16- semicolumns quartz catch, 17- nozzles, 18- circles
Post air inlet.
Embodiment
The preferably embodiment to the present invention is described in further detail below.
Embodiment 1
A kind of integral type induction melting gas-atomized powder device, it includes induction melting device and gas-atomized powder device.
1 ~ Fig. 2 of reference picture, the induction melting device includes smelting quartz cup 4 and smelting quartz lid 3, and both pass through O-shaped
Circle 5, hex bolts 1 and hex nut 2 realize seal combination, and melting kettle 7 is placed in smelting quartz cup 4, passes through aluminium silicate wool
Spend 6 to be separated with smelting quartz 4 inwalls of cup, in smelting quartz cup 4 outer walls cladding induction coil, melting is heated to alloy.
3 ~ Fig. 5 of reference picture, the gas-atomized powder device includes support frame 13, and the height of support frame 13 is stretched by internal steel pipe
The attachment screw 14 that contracts is adjusted；Two ends are plugged with using interference fit punches the quartz ampoule 12 of solid silica gel plug 11 and is placed in support
In the groove of frame, for collecting alloy powder；Alundum tube 10 is inserted at the punching two ends of silica gel plug 11 and is fastened with fluid sealant, is passed through
Alundum tube 10 can be connected with the sebific duct of outside gas cylinder, realize the circulation of protective gas；Gas flowmeter 15 is mechanically anchored in branch
On support 13, regulation is passed through gas flow；Aerosolization small crucible 9 is mechanically anchored in the upper left coil of support frame 13, periphery
Coat one layer of induction coil, heat inner alloy, aerosolization small crucible lid 8 using interference fit by the way of and aerosolization small crucible
One layer of plasticine is wrapped in junction, it is ensured that good air-tightness in 9 connections, practical application；The bottom nozzle 17 of aerosolization small crucible 9
Insert at the left end opening of quartz ampoule 12, and ensure that crucible axis is vertical with the axis of quartz ampoule 12 and realize vertical atomization；Quartz ampoule 12
The internal quartzy catch 16 of one piece of semicolumn of placing at a certain distance is tentatively sieved with realizing to different sphere diameter powder.
Aerosolization small crucible 9 has a cylinder air inlet 18 to be connected with extraneous gas cylinder in the gas-atomized powder device, is atomized
During be passed through protective gas；As shown in fig. 6, the bottom nozzle 17 of aerosolization small crucible 9 is using 80 ° of conical designs.For spray
The angle of mouth 17 is also compared, and when angle is 85 °, residence time of the molten metal in nozzle is uncontrollable, after fusing
The gas pressure for being passed through nozzle 17 does not apply just very fast mass flowing nozzle completely so that the powder sphericity of preparation is poor, it is impossible to full
Foot is required, when angle is 75 °, and molten metal increases with overhead gas contact surface area under same volume, reduces application
The pressure of gas, molten metal residence time in nozzle increases, and increases oxidized risk, while needing to be passed through to compare more
Big throughput can just make molten metal flow into spray chamber, add Productive statistics, atomizing effect and efficiency are all not ideal enough.Choosing
With angle be 80 ° when, molten metal can stop due to the comprehensive function of surface tension, gas pressure, self gravitation in nozzle 17
Stay a period of time and molten metal can flow rapidly into spray chamber and is atomized when increasing the gas flow being passed through in nozzle 17, very
Meet practical application well, the bottom of aerosolization small crucible 9 with the manhole of quartz ampoule side is compact is connected, and ensure that aerosolization is small
The axis of crucible 9 realizes vertical atomization perpendicular to the axis of quartz ampoule 12, this be in order to allow the powder after atomization to make level throw motion,
Can realize the spherical powder for making particle diameter larger from nozzle 17 allowed compared near the less spherical powder of particle diameter from nozzle 17 farther out with
Realize the preliminary screening to powder；Aerosolization small crucible 9 equipped between a crucible cover and crucible for interference fit, and coordinate
Good junction coats one layer of plasticine, and crucible cover top has an annulus conveniently to take；Aerosolization small crucible 9 and support frame coil
Using being mechanically fixed, periphery only has induction coil, for melted alloy.
As shown in Fig. 1 ~ Fig. 6, a kind of operation principle of integral type induction melting gas-atomized powder device of the invention and use
Method：
Step S1：The metal necessarily matched (100g) is placed in melting kettle 7, hex nut 2 is screwed, toward smelting quartz cup 4
Inside it is passed through Ar gas or N2, smelting quartz 4 gas outlet of cup and the tank of outside connect preferably close to ensure by four fluorine tube
Feng Xing.Induction heating equipment is opened, induction heating equipment is closed when alloy is in complete molten condition and is cooled to and is coagulated completely
Solid fraction state, so in triplicate, is cooled to room temperature, closes gas, take out foundry alloy and switch to 10 × 10 × 20 mm sizes with
It is interior.
Step S2：Screw 14 is outwarded winding, by adjusting the height of support frame 13, the aperture that quartz ampoule 12 is opened and the small earthenware of aerosolization
The nozzle 17 of crucible 9 is in close contact, rotating solid silica gel plug 11, the hole of porous alundum tube 10 is directed at the nozzle of aerosolization small crucible 9
17 exit, quartz ampoule 12 is cemented with adhesive tape by solid silica gel plug 11, and interference fit is connected to by another punching and in hole
The solid silica gel plug of porous alundum tube also cements quartz ampoule 12 with adhesive tape.
Step S3：Foundry alloy of one fritter after cleaved is placed in aerosolization small crucible 9, aerosolization small crucible lid is covered
8, compressed with iron wire, control the gas flow into aerosolization small crucible 9 to be 0.1 m by gas flowmeter 153/ h, passes through gas
The air pressure that pressure valve control enters porous alundum tube 10 reaches aerosolization pressure value.
Step S4：Sensing heating switch is opened, foundry alloy melts in aerosolization small crucible 9, and surface tension is larger, melting gold
Category will not flow out the nozzle 17 of aerosolization small crucible 9 at once, and the gas into aerosolization small crucible 9 is increased after moment after 5 ~ 10 s
Flow, realizes powder by atomization.
To continuous atomization, this two step of repeat step S3 and step S4 after aerosolization small crucible lid 8 is opened.
Atomization terminates, and closes sensing heating switch, closes gas, takes aerosolization small crucible 9 away, opens the solid silica gel in right side
Plug 11, first pours into the powder in quartz ampoule 12 in the larger standard sample sieve of mesh number（More than 800 mesh）, screen more than 3 times, produce
To most thin required powder；The quartzy catch of the one piece semicolumn farthest from atomizer 17 is removed again, powder is poured into mesh number slightly larger
Standard sample sieve in（400-800 mesh）, screen more than 3 times, that is, obtain relatively thin required powder；Then remove and got over apart from nozzle successively
Carry out the quartzy catch of nearer semicolumn, powder is poured into the standard screen of corresponding smaller mesh number, the powder larger to sphere diameter is sieved successively
Choosing.
Embodiment 2
Sn elemental metals powder is carried out using the apparatus and method of embodiment 1 to prepare.Pure Sn is switched into 10 × 10 × 20 mm sizes
Within.As shown in Fig. 1 ~ Fig. 6, using following steps：
Step S1：As shown in Fig. 1 ~ Fig. 6, screw 14 is outwarded winding, by adjusting the height of support frame 13, the aperture for driving quartz ampoule 12
It is in close contact with the nozzle 17 of aerosolization small crucible 9, rotating solid silica gel plug 11, porous alundum tube 10 is had leisure alignment aerosolization
The exit of the nozzle 17 of small crucible 9, quartz ampoule 12 is cemented with adhesive tape by solid silica gel plug 11, is connect another punching and in hole
There is the solid silica gel plug 11 for being interference fitted porous alundum tube also to cement quartz ampoule 12 with adhesive tape.
Step S2：Sn of one fritter after cleaved is placed in aerosolization small crucible 9, aerosolization small crucible lid 8 is covered, used
Iron wire is compressed, and controls the gas flow into aerosolization small crucible 9 to be 0.1 m by gas flowmeter 153/ h, passes through air pressure valve
The air pressure that control enters porous alundum tube 10 reaches the MPa of aerosolization pressure value 0.15.
Step S3：Sensing heating switch is opened, Sn melts in aerosolization small crucible 9, and surface tension is larger, and molten metal is not
The nozzle 17 of aerosolization small crucible 9 can be flowed out at once, be after the gas flow that moment after 5 s is increased into aerosolization small crucible 9
0.5 m3/ h, realizes powder by atomization.
Continuous atomization, opens the S2 ~ step S3 that repeated the above steps after aerosolization small crucible lid 8.
Atomization terminates, and closes sensing heating switch, closes gas, take aerosolization small crucible 9 away, opens solid silica gel plug
11, first the powder in quartz ampoule 12 is poured into the larger standard sample sieve of mesh number（More than 800 mesh）, screen more than 3 times, that is, obtain
Most thin required powder；The quartzy catch of the one piece semicolumn farthest from atomizer 17 is removed again, powder is poured into mesh number slightly larger
In standard sample sieve（400-800 mesh）, screen more than 3 times, that is, obtain relatively thin required powder；Then remove more next apart from nozzle successively
The quartzy catch of nearer semicolumn, powder is poured into the standard screen of corresponding smaller mesh number, and the powder larger to sphere diameter is screened successively,
Produce the Sn powder of different sphere diameters.
Embodiment 3
Cu base Cu-Sn alloy powders are carried out using the apparatus and method of embodiment 1 to prepare, as shown in Fig. 1 ~ Fig. 6, using following step
Suddenly：
Step S1：The pure Sn of 39.1g pure Cu and 60.9g are placed in melting kettle 7, hex nut 2 is screwed, toward smelting quartz cup 4
Ar gas is inside passed through, smelting quartz 4 gas outlet of cup and the tank of outside connect to ensure better seal by four fluorine tube.Open
Induction heating equipment is opened, induction heating equipment is closed when alloy is in complete molten condition and is cooled to complete curdled appearance,
So in triplicate, room temperature is cooled to, gas is closed, foundry alloy is taken out and switches within 10 × 10 × 20 mm sizes.
Step S2：Screw 14 is outwarded winding, by adjusting the height of support frame 13, makes the aperture that quartz ampoule 12 is opened and aerosolization small
The nozzle 17 of crucible 9 is in close contact, rotating solid silica gel plug 11, sprays porous alundum tube 10 alignment aerosolization small crucible 9 of having leisure
The exit of mouth 17, quartz ampoule 12 is cemented with adhesive tape by solid silica gel plug 11, is punched by another and is connected to interference in hole and matches somebody with somebody
The solid silica gel plug 11 for closing porous alundum tube also cements quartz ampoule 12 with adhesive tape.
Step S3：Foundry alloy of one fritter after cleaved is placed in aerosolization small crucible 9, aerosolization small crucible lid is covered
8, compressed with iron wire, control the gas flow into aerosolization small crucible 9 to be 0.1 m by gas flowmeter 153/ h, passes through gas
The air pressure that pressure valve control enters porous alundum tube 10 reaches the MPa of aerosolization pressure value 0.15.
Step S4：Sensing heating switch is opened, foundry alloy melts in aerosolization small crucible 9, and surface tension is larger, melting gold
Category will not flow out the nozzle 17 of aerosolization small crucible 9 at once, and the gas stream into aerosolization small crucible 9 is increased after moment after 5 s
Measure as 0.5 m3/ h, realizes powder by atomization.
Continuous atomization, opens this two step of repeat step S3 and step S4 after aerosolization small crucible lid 8.
Atomization terminates, and closes sensing heating switch, closes gas, take aerosolization small crucible 9 away, opens solid silica gel plug
11, first the powder in quartz ampoule 12 is poured into the larger standard sample sieve of mesh number（More than 800 mesh）, screen more than 3 times, that is, obtain
Most thin required powder；The quartzy catch of the one piece semicolumn farthest from atomizer 17 is removed again, powder is poured into mesh number slightly larger
In standard sample sieve（400-800 mesh）, screen more than 3 times, that is, obtain relatively thin required powder；Then remove more next apart from nozzle successively
The quartzy catch of nearer semicolumn, powder is poured into the standard screen of corresponding smaller mesh number, and the powder larger to sphere diameter is screened successively,
Obtain the Cu-Sn alloy powders of different sphere diameters, its SEM figures are as shown in fig. 7, as seen from Figure 7, the even particle size of powder.
Embodiment 4
Amorphous powdered alloy preparation is carried out using the apparatus and method of embodiment 1, as shown in Fig. 1 ~ Fig. 6, using following steps：
Step S1：The pure Y of 38.1g pure Cu, 53.6g pure Zr, 1.6g pure Al and 5.8g are placed in melting kettle 7, hexagonal spiral shell is screwed
Mother 2, toward smelting quartz cup 4 in be passed through Ar gas, 4 gas outlet of smelting quartz glass and the tank of outside connect to protect by four fluorine tube
Demonstrate,prove better seal.Induction heating equipment is opened, induction heating equipment is closed when alloy is in complete molten condition and cold
But complete curdled appearance is arrived, so in triplicate, room temperature is cooled to, gas is closed, foundry alloy is taken out and switches to 10 × 10 × 20
Within mm sizes.
Step S2：Screw 14 is outwarded winding, by adjusting the height of support frame 13, makes the aperture that quartz ampoule 12 is opened and aerosolization small
The nozzle 17 of crucible 9 is in close contact, rotating solid silica gel plug 11, porous alundum tube 10 is had leisure and is directed at aerosolization small crucible 9
The exit of nozzle 17, quartz ampoule 12 is cemented with adhesive tape by solid silica gel plug 11, and interference is connected to by another punching and in hole
The solid silica gel plug 11 of porous alundum tube is coordinated also to cement quartz ampoule 12 with adhesive tape.
Step S3：Foundry alloy of one fritter after cleaved is placed in aerosolization small crucible 9, aerosolization small crucible lid is covered
8, compressed with iron wire, control the gas flow into aerosolization small crucible 9 to be 0.1 m by gas flowmeter 153/ h, passes through gas
The air pressure that pressure valve control enters porous alundum tube 10 reaches the MPa of aerosolization pressure value 0.15.
Step S4：Sensing heating switch is opened, foundry alloy melts in aerosolization small crucible 9, and surface tension is larger, melting gold
Category will not flow out the nozzle 17 of aerosolization small crucible 9 at once, and the gas stream into aerosolization small crucible 9 is increased after moment after 5 s
Measure as 0.5 m3/ h, realizes powder by atomization.
Continuous atomization, opens this two step of repeat step S3 and step S4 after aerosolization small crucible lid 8.
Atomization terminates, and closes sensing heating switch, closes gas, take aerosolization small crucible 9 away, opens solid silica gel plug
11, first the powder in quartz ampoule 12 is poured into the larger standard sample sieve of mesh number（More than 800 mesh）, screen more than 3 times, that is, obtain
Most thin required powder；The quartzy catch of the one piece semicolumn farthest from atomizer 17 is removed again, powder is poured into mesh number slightly larger
In standard sample sieve（400-800 mesh）, screen more than 3 times, that is, obtain relatively thin required powder；Then remove more next apart from nozzle successively
The quartzy catch of nearer semicolumn, powder is poured into the standard screen of corresponding smaller mesh number, and the powder larger to sphere diameter is screened successively,
Obtain the Cu of different sphere diameters46Zr45Al7Y5Amorphous powdered alloy.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to assert
The specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of not departing from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention's
Protection domain.
Claims (10)
1. a kind of integral type induction melting gas-atomized powder device, it is characterised in that：It includes gas-atomized powder device, the gas
Powder by atomization device includes support frame, aerosolization crucible, and support frame as described above is provided with the quartz ampoule for being used for collecting alloy powder, institute
The one end for stating quartz ampoule is connected with the alundum tube for being passed through protective gas；Support frame as described above is provided with induction coil, the aerosolization
Crucible is located in induction coil, and the bottom of the aerosolization crucible is provided with nozzle, and the nozzle is towards the inside of quartz ampoule；It is described
The axis of the nozzle of aerosolization crucible is vertical with the axis of quartz ampoule；The opening of the alundum tube is towards the exit of nozzle；Institute
The openend for stating quartz ampoule passes through plug seal；The aerosolization crucible is provided with the air inlet being connected with extraneous gas cylinder.
2. integral type induction melting gas-atomized powder device according to claim 1, it is characterised in that：The nozzle is
Cone structure, the angle of the angulus pyramidis of the nozzle is 75 ~ 85 °.
3. integral type induction melting gas-atomized powder device according to claim 2, it is characterised in that：The cone of the nozzle
The angle at body angle is 80 °.
4. integral type induction melting gas-atomized powder device according to claim 1, it is characterised in that：The alundum tube leads to
Air pressure valve is crossed to be connected with gas cylinder；The aerosolization crucible is connected by gas flowmeter with extraneous gas cylinder.
5. integral type induction melting gas-atomized powder device according to claim 1, it is characterised in that：In the quartz ampoule
Quartzy catch provided with least two semicolumns.
6. integral type induction melting gas-atomized powder device according to claim 5, it is characterised in that：In the quartz ampoule
Quartzy catch of the face provided with 4 pieces of semicolumns, adjusts the achievable preliminary screening to different sphere diameter powder in the distance between they.
7. integral type induction melting gas-atomized powder device according to claim 1, it is characterised in that：The alundum tube is
Porous alundum tube；The oral area of the quartz ampoule is used provided with solid silica gel plug, the solid silica gel plug of punching is punched with quartz ampoule
Interference fit.
8. the integral type induction melting gas-atomized powder device according to claim 1 ~ 7 any one, it is characterised in that：Its
Including smelting apparatus, the smelting apparatus is placed in induction heating equipment；The smelting apparatus includes the first melting container and molten
Melt and the second melting container is provided with container cover, first melting container；The melt container is covered provided with protective gas import
With protective gas outlet；Thermal insulation layer, the material of the thermal insulation layer are provided with first melting container between the second melting container
Matter is alumina silicate cotton.
9. one kind carries out aerosol using the integral type induction melting gas-atomized powder device as described in claim 1 ~ 8 any one
Change the method for powder processed, it is characterised in that：Comprise the following steps：
Step S1, smelting apparatus interior sealing is placed in by the metal necessarily matched, and is passed through protective gas, opens induction heating equipment
Heated, close induction heating equipment when alloy is in complete molten condition and be cooled to complete curdled appearance, so weight
It is multiple three times, room temperature is cooled to, gas is closed；Take out foundry alloy and cut；
Step S2, the obtained alloys of step S1 are put into aerosolization crucible, and cover aerosolization crucible cover, and control enters gas
The gas flow protection foundry alloy fusion process for being atomized crucible is not oxidized, and controls the air pressure into alundum tube to reach it
To aerosolization pressure value；
Step S3, is heated to induction coil energization, and foundry alloy enters gas in aerosolization crucible melting after being increased after 5 ~ 10 s
The gas flow of crucible is atomized, powder by atomization is realized.
10. the method for gas-atomized powder according to claim 9, it is characterised in that：Semicolumn is provided with the quartz ampoule
Spacing is provided between quartzy catch, the quartzy catch of the semicolumn；The method of the gas-atomized powder is further comprising the steps of：
Step S4, atomization terminates, and closes sensing heating switch, closes gas, take aerosolization crucible away, opens silicon on the right side of quartz ampoule
Plug, the powder in quartz ampoule is poured into the standard sample sieve more than 800 mesh, screens more than 3 times, that is, obtains required powder；Again
Remove the quartzy catch of the one piece semicolumn farthest from nozzle, in the standard sample sieve that powder is poured into 400-800 mesh, screening 3 times with
On, that is, obtain required powder；Then remove successively from nozzle opening from as far as the quartzy catch of near semicolumn, powder is poured into phase
In the standard screen for answering mesh number, the powder larger to sphere diameter is screened successively.
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| CN107116225B (en) | 2023-06-16 |
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