CN109621777A - A kind of disturbing flow device for liquid stirring and flow-disturbing method - Google Patents
A kind of disturbing flow device for liquid stirring and flow-disturbing method Download PDFInfo
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- CN109621777A CN109621777A CN201811620488.2A CN201811620488A CN109621777A CN 109621777 A CN109621777 A CN 109621777A CN 201811620488 A CN201811620488 A CN 201811620488A CN 109621777 A CN109621777 A CN 109621777A
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- agitator tank
- tabulator bars
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- bars
- disturbing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/70—Pre-treatment of the materials to be mixed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/70—Pre-treatment of the materials to be mixed
- B01F23/711—Heating materials, e.g. melting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/805—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis wherein the stirrers or the receptacles are moved in order to bring them into operative position; Means for fixing the receptacle
- B01F27/806—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis wherein the stirrers or the receptacles are moved in order to bring them into operative position; Means for fixing the receptacle with vertical displacement of the stirrer, e.g. in combination with means for pivoting the stirrer about a vertical axis in order to co-operate with different receptacles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/22—Control or regulation
- B01F35/221—Control or regulation of operational parameters, e.g. level of material in the mixer, temperature or pressure
- B01F35/2215—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F35/93—Heating or cooling systems arranged inside the receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F2035/99—Heating
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to materials processing technology fields, disclose a kind of disturbing flow device for liquid stirring and flow-disturbing method, disturbing flow device for liquid stirring includes agitator tank, stirring rod and tabulator bars, stirring rod and tabulator bars are located at the inside of agitator tank, the diameter of tabulator bars is the 10%-20% of the interior diameter of agitator tank, and the horizontal distance at center of the tabulator bars away from agitator tank is the 50%-75% of the inside radius of agitator tank；Flow-disturbing method for liquid stirring includes that tabulator bars and stirring rod are arranged in agitator tank, makes the 10%-20% of the interior diameter of the diameter agitator tank of tabulator bars, makes tabulator bars away from the 50%-75% of the inside radius of the horizontal distance agitator tank at the center of agitator tank.Above-mentioned flow-disturbing method can be such that slurry hits with tabulator bars with disturbing flow device, form the stable turbulent flow of high speed, be conducive to for the powder of investment scattering, and avoid ceramic powder plug product, make slurry mixing more evenly.
Description
Technical field
The present invention relates to materials processing technology field more particularly to a kind of disturbing flow device for liquid stirring and flow-disturbing sides
Method.
Background technique
In general, metal-base composites is using metal or alloy such as aluminium, magnesium, iron as matrix, by addition particle, whisker with
The reinforced phases such as fiber, to achieve the purpose that designing material structural constituent and improve material property.Common reinforced phase is with ceramic phase
Based on particle, such as SiC, B4C etc..The preparation method of existing metal-base composites has powder metallurgic method, pressure/no pressure
Method of impregnation, in-situ chemical reaction synthetic method and liquid stirring method etc..Relative to be widely used, the powder metallurgic method of technical maturity and
Other are limited and the method for application difficult by material composition property, and liquid stirring method is short, low in cost and logical because of its process flow
It is gradually obtained in-depth study by force with property and is widely applied.In liquid stirring method, in agitator tank be arranged spoiler or
Tabulator bars come help slurry generate be vortexed so that be uniformly mixed be common knowledge in the art, however, it is in metal-based compound
But fail always to be applied in the preparation of material.The reason is that in tradition stirring it is multiple be stirred communicate it is enough often with preparing enough
Wetting or solvability (such as general aqueous solution, the chemical reaction in organic solvent) or these stirrings be all mutually
Relatively soft form (such as milk whey, food preparation etc.), under these conditions, is distributed in disturbing close to stirring top tank structure
Flowing plate or tabulator bars are in the higher position of mixing speed, can effectively stop laminar flow and generate vortex.General spoiler or
Tabulator bars design is to follow such standard, is set to apart from stirring blade remote position, however this conventional design
Scheme is difficult to get a desired effect in metal-base composites liquid stirring technique.Because being needed in preparation process to metal
Tiny ceramic phase particles of taking measurements greatly are added in melt, and these ceramic phase particles are generally insoluble in metal bath or do not have
Standby enough wetabilitys, therefore will receive the exclusion of metal bath, fill in the gap between spoiler or tabulator bars and agitator tank
The a large amount of ceramic powders of product enable slurry be difficult to flow and prepare failure or slurry although disturbed streaming system influences to form vortex, but
Some in the ceramic powder of investment remains in above-mentioned gap, and the content of ceramic phase in final material obtained is not achieved
Design requirement and prepare failure.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of disturbing flow device for liquid stirring and flow-disturbing side
Method enables slurry hit with tabulator bars, forms high speed and stable turbulent flow, and it has extremely strong shearing force, be conducive to by
The powder of investment scatter, and avoids the plug product of ceramic powder, makes slurry mixing more evenly.
The technical solution adopted by the present invention to solve the technical problems is:
Provide a kind of disturbing flow device for liquid stirring, including agitator tank, stirring rod and tabulator bars, the stirring rod
It is located at the inside of the agitator tank with the tabulator bars, the diameter of the tabulator bars is the 10%- of the interior diameter of the agitator tank
20%, the horizontal distance at center of the tabulator bars away from the agitator tank is the 50%-75% of the inside radius of the agitator tank.
As an improvement of the above technical solution, the inside of the tabulator bars is hollow, and the bottom closing of the tabulator bars,
The inside of the tabulator bars is fixed with thermocouple wire, and there are gaps between the thermocouple wire and the bottom of the tabulator bars.
As a further improvement of the above technical scheme, the inside of the tabulator bars is additionally provided with auxiliary heat transfer part, described auxiliary
Help the fusing point of heat transfer part lower than the fusing point of the metallic matrix in the agitator tank.
It as a further improvement of the above technical scheme, further include air inlet pipe, the inside of the tabulator bars is hollow, and institute
The bottom for stating tabulator bars is connected to the inside of the agitator tank, and the air inlet pipe is passed through the inside of the tabulator bars.
It as a further improvement of the above technical scheme, further include feed pipe, the inside of the tabulator bars is hollow and institute
The bottom for stating tabulator bars is connected to the inside of the agitator tank, and the feed pipe is passed through the inside of the tabulator bars.
It as a further improvement of the above technical scheme, further include ventilation charge pipe, the inside of the tabulator bars is hollow
And the bottom of the tabulator bars is connected to the inside of the agitator tank, the ventilation charge pipe for ventilating and feeding is passed through institute
State the inside of tabulator bars.
A kind of flow-disturbing method for liquid stirring is additionally provided, tabulator bars and stirring rod are set in agitator tank, make institute
The diameter of tabulator bars is stated as the 10%-20% of the interior diameter of the agitator tank, makes the tabulator bars away from the center of the agitator tank
Horizontal distance be the agitator tank inside radius 50%-75%.
As a further improvement of the above technical scheme, to the method for the metal bath thermometric in the agitator tank are as follows: will
The bottom of the tabulator bars is closed, and sets hollow for the inside of the tabulator bars, and heat is arranged in the inside of the tabulator bars
Thermocouple wire, and make between the thermocouple wire and the bottom of the tabulator bars that there are gaps.
As a further improvement of the above technical scheme, described auxiliary in the inside of tabulator bars setting auxiliary heat transfer part
Help the fusing point of heat transfer part lower than the fusing point of the metallic matrix in the agitator tank, when the tabulator bars enter molten metal matrix
Afterwards, the auxiliary heat transfer part melts and floods the thermocouple wire.
As a further improvement of the above technical scheme, to the method for the metal bath refining purification in the agitator tank
Are as follows: setting air inlet pipe sets hollow for the inside of the tabulator bars, makes the interior of the bottom of the tabulator bars and the agitator tank
The air inlet pipe, is passed through the inside of the tabulator bars by portion's connection, and is passed through into the air inlet pipe that can to refine purification metal molten
The gas of body.
As a further improvement of the above technical scheme, the side of reinforced phase is added in the metal bath in Xiang Suoshu agitator tank
Method are as follows: setting feed pipe sets hollow for the inside of the tabulator bars, makes the bottom of the tabulator bars and the agitator tank
The feed pipe, is passed through the inside of the tabulator bars, and reinforced phase powder is passed through into the feed pipe by inside connection.
The beneficial effects of the present invention are: slurry is enabled to hit with tabulator bars, formed at a high speed and stable turbulent flow, and it has
Standby extremely strong shearing force, is conducive to for the powder of investment scattering, and avoids the plug product of ceramic powder, makes slurry mixing more evenly.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples:
Fig. 1 is the structural schematic diagram in one embodiment of the invention for the disturbing flow device of liquid stirring.
Specific embodiment
It is carried out below with reference to technical effect of the embodiment and attached drawing to design of the invention, specific structure and generation clear
Chu, complete description, to be completely understood by the purpose of the present invention, scheme and effect.It should be noted that the case where not conflicting
Under, the features in the embodiments and the embodiments of the present application can be combined with each other.
It should be noted that unless otherwise specified, when a certain feature referred to as " fixation ", " connection " are in another feature,
It can directly fix, be connected to another feature, and can also fix, be connected to another feature indirectly.In addition, this
The descriptions such as up, down, left, right, before and after used in invention are only relative to the mutual of each component part of the invention in attached drawing
For positional relationship.
In addition, unless otherwise defined, the technology of all technical and scientific terms used herein and the art
The normally understood meaning of personnel is identical.Term used in the description is intended merely to description specific embodiment herein, without
It is to limit the present invention.Term " and or " used herein includes the arbitrary of one or more relevant listed items
Combination.
Referring to Fig.1, the structural schematic diagram in one embodiment of the invention for the disturbing flow device of liquid stirring is shown.It should
Disturbing flow device includes agitator tank 1, stirring rod 2 and tabulator bars 3.Stirring rod 2 includes stirring main shaft 21 and stirring blade 22.Stirring rod
2 are respectively positioned on the inside of agitator tank 1 with tabulator bars 3, and top is both secured on crane 4.In the present embodiment, agitator tank 1 is
Cylindrical body, but agitator tank selects other square column types or irregular contour body actually also within the scope of the present invention.Stirring
When tank is cylindrical body, the internal diameter of agitator tank is subject to the cylindrical body directly to measure；Agitator tank is square column or other are irregular outer
When body, the internal diameter of agitator tank be subject to its inscribed circle cylinder measure (when internal diameter of the agitator tank from top to lower part is inconsistent,
It is averaged).Stirring blade 22 selects basic paddle or pusher blade.Crane 4 is selected well known any
A kind of device with elevating function.
When the slurry to metal-base composites is stirred, with the progress of stirring, slurry viscosity is continuously improved, existing
Some stirring systems, which are difficult to realize in entire whipping process, entirely melts intracorporal stabilizing vortex or turbulent flow, usually only in paddle
There are a laminar flows in the Plane of rotation of piece 22.Usually in whipping process, spoiler or tabulator bars barrier level can be passed through
The laminar flow in direction, to realize vortex, but spoiler or tabulator bars are mostly fixed on stirring tank body in traditional stirring system,
When preparing metal-base composites, a large amount of reinforced phase powders for easily leading to investment are deposited in tabulator bars and stir this design method
It mixes in the gap between tank, preparation is caused to fail.
And in the present invention, thicker tabulator bars 3 are placed in the inner sidewall and the horizontal line of stirring main shaft 21 of agitator tank 1
Position near the heart not only ensure that and flow-disturbing effect may be implemented, but also can be avoided the accumulation of ceramic powder.Specifically, by flow-disturbing
The diameter of stick 3 is set as the 10%-20% of the interior diameter of agitator tank 1, and makes tabulator bars 3 away from the horizontal distance at 1 center of agitator tank
For the 50%-75% of 1 inside radius of agitator tank.Tabulator bars 3 extend to downwards the top surface close to stirring blade 22 from liquid level, or
Person, when the diameter of stirring blade 22 is smaller, tabulator bars 3 can also be more than that its Plane of rotation continues to extend downwardly, closer to stirring
The bottom surface of tank 1.Tabulator bars 3 can be parallel with 21 direction of stirring main shaft, can also design certain differential seat angle.The material of tabulator bars 3
Graphite or high-temperature alloy can be selected in matter.
By the above-mentioned tabulator bars 3 of setting, the slurry in agitator tank 1 is enabled to generate shock with it, it can be by stirring blade 22
The laminar flow of generation is converted into vortex or turbulent flow inside whole slurry, accelerates the rate of dispersion of the ceramic particle of investment, thus
Prepare uniformly mixed slurry.Multiple tabulator bars 3 can also be set as needed, to further enhance flow-disturbing effect.
The top of stirring rod 2 and tabulator bars 3 is both secured on crane 4, after the matrix material that will be added all fusing,
Crane 4 declines, while driving stirring rod 2 and tabulator bars 3 to lower into melt, and start to stir.Due to tabulator bars 3 and rise
The junction of drop frame 4 is located at outside melt, it can thus be avoided the problem of ceramic powder accumulation occurs in the gap of junction.?
Again being put into stirring rod 2 with tabulator bars 3 after whole melting sources can prevent from generating stirring rod 2 and tabulator bars 3 when investment raw material
It hits and damages.
During preparing slurry, it is stably held in the temperature in agitator tank 1 in a certain range and is successfully prepared
Necessary condition.Since the lower ceramic particle of big amount temperature, the two are constantly put into high-temperature fusant slurry during the preparation process
Temperature difference be up to 300 DEG C -700 DEG C, and put into speed and be up to 0.5-2kg/min or more, therefore to the detection of melt temperature ten
Divide important.So needing to be arranged temperature measuring equipment to monitor melt temperature in real time, in order to which temperature is adjusted in time.It is logical
Thermocouple is mainly placed at heating device by normal temp measuring system, or is placed directly against the outer surface of agitator tank 1, temperature measuring efficiency
It is lower.Even if there is the system of directly measurement molten matrix metal temperature to be washed away by slurry since thermocouple wire is more fragile and be
System vibration influences easily to fail, it is also difficult to realize long-term, the stable monitoring with high accuracy.If using firm armouring thermoelectricity
Even, the thermometric reaction time is again longer.Above-mentioned factor greatly hampers programme-controlled instrument to the accurate temperature controlling of slurry.
And in the present invention, it can set hollow for above-mentioned tabulator bars 3, cut down the wall thickness of temperature measurement location, and inside it
It is put into the thermocouple wire 31 of high reaction speed, to realize the measurement to melt temperature.The vibration of thermocouple wire 31 in order to prevent
The bottom of abrasion, thermocouple wire 31 and tabulator bars 3 contacts it directly with the bottom of tabulator bars 3 there are certain gap.Also
Auxiliary heat transfer part 32 can be set in 3 bottom of tabulator bars.Heat transfer part 32 is assisted to select low-melting-point metal, such as Sn.When tabulator bars 3
Into after high-temperature fusant, auxiliary heat transfer part 32 will be molten into rapidly liquid, and flood the thermometric position of thermocouple wire 31, thus plus
Fast heat transfer, improves thermometric speed.When stirring, which terminates temperature, to be reduced, auxiliary heat transfer part 32 solidifies blocking again.It is disturbed when setting is multiple
When flowing stick 3, multi-point temperature measurement can be realized, improve the uniformity and accuracy of thermometric.
When preparing composite material, metallic matrix must cleannes with higher.If containing excessive in metallic matrix
Impurity or oxidation film, necessarily affect the introducing of subsequent reinforced phase powder.Usually raw material are cleaned, by metallic matrix
It is skimmed after fusing or blowing refining removes the impurity and oxidation film in raw material.But the above method is easily destroyed system
Air-tightness causes metallic matrix to aoxidize.
And in the present invention, it can set hollow for above-mentioned tabulator bars 3, make the bottom of tabulator bars 3 and the inside of agitator tank 1
Connection.Air inlet pipe 33 is accessed inside to tabulator bars 3, and is passed through inert gas to air inlet pipe 33, and inert gas will be directly passed into
To the inside of metal bath.As inert gas floats, the impurity in metallic matrix is taken out of with oxidation film, to reach purification gold
Belong to the purpose of matrix.It can prevent metallic matrix from contacting with air by the design, metallic matrix is avoided to be oxidized.
In general, being to direct plunge into ceramic particle in slurry when ceramic particle reinforced phase is added into metallic matrix
Surface, need slurry vortex by ceramic particle introduce wherein.But the wetability of ceramic particle and metallic matrix is poor, and
Usually there is oxidation film obstruction in matrix surface, so that the ceramic particle of investment can not be involved in inside melt rapidly, be unfavorable for starching
The mixing of material.
And in the present invention, it can set hollow for above-mentioned tabulator bars 3, make the bottom of tabulator bars 3 and the inside of agitator tank 1
Connection, and to access feed pipe 34 inside tabulator bars 3, thus by ceramic powder by being passed directly into melt inside tabulator bars 3.
Ceramic powder is added into metal bath by this way can be such that the powder of investment is directly entered inside melt, and powder is avoided to float
Metal bath surface is floated on, the uniformity of mixing is improved.
Further, it is also possible to realize air inlet and charging function simultaneously in a tabulator bars, one need to be only passed through into tabulator bars
Root ventilation charge pipe.When carrying out refining purification to melt, it is passed through inert gas in Xiang Tongqi charge pipe, is terminated in purification
When feeding into metallic matrix, ceramic powder is added in Xiang Tongqi charge pipe.The design can reduce the setting of tabulator bars
Quantity simplifies device, and can reduce cost.
Specific embodiment is provided below the content of present invention to be further described:
Embodiment 1
With the application of the invention, preparing the B of 35kg in this agitator tank 1 in the agitated cylinder tank 1 of an internal diameter 300mm4C/
Al composite material, wherein B4C mass fraction is 31%.25kg aluminium alloy stock is placed in agitator tank 1 first, is heated to
750 DEG C make its all melt, it is refined skim remove 0.5kg impurity after stablize at 680 DEG C, stirring rod 2 and tabulator bars 3 are passed through
The decline of crane 4 is immersed in melt, and one side high-speed stirred will be passed through with the speed of 0.5kg per minute pretreated on one side
10.5kgB4C particle introduces melt, and particle continues stirring 15 minutes after being fully incorporated melt.
In the present embodiment, 1 internal diameter of agitator tank is 300mm, and 22 outer diameter of stirring blade is 200mm, including one includes thermometric
The tabulator bars 3 of thermocouple 31, horizontal distance of the tabulator bars 3 apart from 1 center of agitator tank are 100mm, and 3 diameter of tabulator bars is 35mm,
3 bottom surface of tabulator bars probes into the depth of liquid level under conditions of 22 top face 15mm of stirring blade, low whipping speed 500r/min,
Tabulator bars 3 can help the vortex and turbulent flow of the stable high speed of melt composition.
Meanwhile room temperature is added in high speed to program-controlled stable melt temperature in thermocouple 31 in being added in the tabulator bars 3
B4In 21 minutes of C powder, program controlled heater system output power fluctuates within the scope of 15-25kW, and designs 680 kept
DEG C temperature is basicly stable, and whole experiment process is fluctuated less than 2 DEG C, meets design requirement.
Embodiment 2
With the application of the invention, being prepared in this agitator tank 1 in the agitated cylinder tank 1 with U-shaped bottom of an internal diameter 350mm
The SiC/Al composite material of 50kg, wherein SiC mass fraction is 32%.101 alloy raw material of 34.5kg cast aluminium is placed on first
In agitator tank 1, be heated to 680 DEG C make its all melt, it is refined skim remove 0.5kg impurity after stablize at 600 DEG C.It will stirring
Stick 2 and multiple tabulator bars being uniformly distributed in inside agitator tank 1 are immersed in melt by the decline of crane 4, one side high-speed stirred,
The feed pipe 34 in hollow tabulator bars will be passed through by pretreated 16kgSiC particle with the speed of 0.5kg per minute on one side
It introduces inside melt, particle continues stirring 20 minutes after being fully incorporated melt.
In the present embodiment, 1 internal diameter of agitator tank is 350mm, and 22 outer diameter of stirring blade is 260mm, including one includes thermometric
The tabulator bars of thermocouple 31, a diameter of 35mm, the horizontal distance apart from 1 center of agitator tank are 130mm；And two include into
The tabulator bars of expects pipe 34, diameter are 45mm, and the horizontal distance apart from 1 center of agitator tank is 130mm, and charging bore is
15mm.The bottom surface of all tabulator bars probes into the depth of liquid level in 22 top face 20mm of stirring blade, low whipping speed 400r/
Under conditions of min, these tabulator bars can help the vortex and turbulent flow of the stable high speed of melt composition.
The tabulator bars of temperature thermocouple 31 are included to program-controlled stable melt temperature, 200 DEG C of preheating SiC powder are added in high speed
In 32 minutes of body, program controlled heater system output power fluctuates within the scope of 18-27kW, and designs the 600 DEG C of temperature kept
Spend it is basicly stable, whole experiment process fluctuate less than 3 DEG C, meet design requirement.
Embodiment 3
With the application of the invention, being prepared in this agitator tank 1 in the agitated cylinder tank 1 with U-shaped bottom of an internal diameter 280mm
The B of 30kg4C/nanoAl2O3/ Al composite material, wherein B4C mass fraction is 10%, and particle diameter distribution is 10 to 44 microns, nanometer
Al2O3Mass fraction is 2%, and particle diameter distribution is 100 to 200 nanometers.27kg fine aluminium raw material is placed in agitator tank 1 first, is added
Heat melts its all to 750 DEG C, refined to skim that remove several grams of impurity (its quality negligible) stable 680 afterwards
DEG C, multiple tabulator bars being randomly distributed in inside agitator tank 1 are immersed in melt by the decline of crane 4, one side high-speed stirred,
Pretreated 3kgB will be passed through with the speed of 0.3kg per minute on one side4C particle is introduced by the feed pipe in hollow tabulator bars
Inside melt, pretreated 0.6kg nanometers of Al will be passed through with the speed of 0.06kg per minute on one side2O3Particle passes through another hollow
Tabulator bars in feed pipe introduce inside melt, particle, which is fully incorporated after melt, continues stirring 15 minutes.
In the present embodiment, 1 internal diameter of agitator tank is 280mm, and 22 outer diameter of stirring blade is 200mm, including two include thermometric
The tabulator bars of thermocouple 31, diameter are 30mm, and the horizontal distance apart from 1 center of agitator tank is 90mm；And in two
Tabulator bars containing feed pipe 34, diameter are 50mm, and the horizontal distance apart from 1 center of agitator tank is 90mm, in feed pipe
Diameter is 20mm；It further include a solid tabulator bars, a diameter of 50mm, the horizontal distance apart from 1 center of agitator tank is 90mm.Institute
There is the bottom surface of tabulator bars to probe into the depth of liquid level in 22 top face 10mm of stirring blade, the condition of low whipping speed 600r/min
Under, these tabulator bars 3 can help the vortex and turbulent flow of the stable high speed of melt composition.
Two include the tabulator bars of temperature thermocouple 31 to program-controlled stable melt temperature, and two kinds of powders are added in high speed
In 10 minutes, program controlled heater system output power fluctuates within the scope of 6-9kW, and it is basic to design the 680 DEG C of temperature kept
Stablize, less than 1 DEG C, whole experiment process is fluctuated less than 1.5 DEG C two temperature thermocouple temperature difference, meets design requirement.
It is to be illustrated to what preferable implementation of the invention carried out, but the invention is not limited to the implementation above
Example, those skilled in the art can also make various equivalent variations on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.
Claims (11)
1. a kind of disturbing flow device for liquid stirring, including agitator tank, stirring rod and tabulator bars, the stirring rod are disturbed with described
Stream stick is located at the inside of the agitator tank, which is characterized in that the diameter of the tabulator bars is the interior diameter of the agitator tank
10%-20%, the horizontal distance at center of the tabulator bars away from the agitator tank are the 50%- of the inside radius of the agitator tank
75%.
2. the disturbing flow device according to claim 1 for liquid stirring, which is characterized in that the inside of the tabulator bars is
It is hollow, and the bottom closing of the tabulator bars, the inside of the tabulator bars are fixed with thermocouple wire, the thermocouple wire with it is described
There are gaps between the bottom of tabulator bars.
3. the disturbing flow device according to claim 2 for liquid stirring, which is characterized in that the inside of the tabulator bars is also
Equipped with auxiliary heat transfer part, the fusing point of the auxiliary heat transfer part is lower than the fusing point of the metallic matrix in the agitator tank.
4. the disturbing flow device according to claim 1 for liquid stirring, which is characterized in that it further include air inlet pipe, it is described
The inside of tabulator bars is hollow, and the bottom of the tabulator bars is connected to the inside of the agitator tank, and the air inlet pipe is passed through institute
State the inside of tabulator bars.
5. the disturbing flow device according to claim 1 for liquid stirring, which is characterized in that it further include feed pipe, it is described
The inside of tabulator bars is that the bottom of the hollow and described tabulator bars is connected to the inside of the agitator tank, and the feed pipe is passed through described
The inside of tabulator bars.
6. the disturbing flow device according to claim 1 for liquid stirring, which is characterized in that it further include ventilation charge pipe,
The inside of the tabulator bars is that the bottom of the hollow and described tabulator bars is connected to the inside of the agitator tank, for ventilating and feeding
The ventilation charge pipe be passed through the inside of the tabulator bars.
7. a kind of flow-disturbing method for liquid stirring, which is characterized in that tabulator bars and stirring rod are arranged in agitator tank, makes institute
The diameter of tabulator bars is stated as the 10%-20% of the interior diameter of the agitator tank, makes the tabulator bars away from the center of the agitator tank
Horizontal distance be the agitator tank inside radius 50%-75%.
8. the flow-disturbing method according to claim 7 for liquid stirring, which is characterized in that the gold in the agitator tank
Belong to the method for melt thermometric are as follows: the bottom of the tabulator bars is closed, and sets hollow for the inside of the tabulator bars, in institute
The inside setting thermocouple wire of tabulator bars is stated, and makes between the thermocouple wire and the bottom of the tabulator bars that there are gaps.
9. the flow-disturbing method according to claim 8 for liquid stirring, which is characterized in that in the inside of the tabulator bars
Setting auxiliary heat transfer part, the fusing point of the auxiliary heat transfer part are disturbed lower than the fusing point of the metallic matrix in the agitator tank when described
After stream stick enters molten metal matrix, the auxiliary heat transfer part melts and floods the thermocouple wire.
10. the flow-disturbing method according to claim 7 for liquid stirring, which is characterized in that in the agitator tank
The method of metal bath refining purification are as follows: setting air inlet pipe sets hollow for the inside of the tabulator bars, makes the tabulator bars
Bottom be connected to the inside of the agitator tank, the air inlet pipe is passed through to the inside of the tabulator bars, and to the air inlet pipe
In be passed through the gas that can refine refining molten metal.
11. the flow-disturbing method according to claim 7 for liquid stirring, which is characterized in that in Xiang Suoshu agitator tank
The method of reinforced phase is added in metal bath are as follows: setting feed pipe sets hollow for the inside of the tabulator bars, makes described disturb
The bottom of stream stick is connected to the inside of the agitator tank, and the feed pipe is passed through to the inside of the tabulator bars, and to it is described into
Reinforced phase powder is passed through in expects pipe.
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