CN108380851A - A kind of device and its process for refining of multi- scenarios method thinning metal solidification texture - Google Patents
A kind of device and its process for refining of multi- scenarios method thinning metal solidification texture Download PDFInfo
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- CN108380851A CN108380851A CN201810068941.7A CN201810068941A CN108380851A CN 108380851 A CN108380851 A CN 108380851A CN 201810068941 A CN201810068941 A CN 201810068941A CN 108380851 A CN108380851 A CN 108380851A
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- metal bath
- metal
- thermocouple
- sealing cover
- crystallizer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/02—Use of electric or magnetic effects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/20—Measures not previously mentioned for influencing the grain structure or texture; Selection of compositions therefor
Abstract
The invention belongs to metal material processing technical fields,It is related to the device and its process for refining of multi- scenarios method thinning metal solidification texture,Induction coil generates thermocouple effect and is heated to metal bath,Moisture recorder records the metal bath temperature of thermocouple detection,After metal bath fusing,Decline stirring rod,It opens rotating speed controller and mechanical agitation is carried out to metal bath,Electrode is declined,Open the pulse power,Pulse current is passed through into metal bath,Pass through the pulse power,Rotating speed controller and sensing heating instrument adjust pulse current magnitude,Stirring rod mixing speed,Induction coil heating speed,Carry out electric field,The field of force,Thermal field,Magnetic field multi- scenarios method and collective effect is in metal bath,Promote forming core,Broken dendrite,Crystal grain thinning,The apparatus structure of the multi- scenarios method thinning metal solidification texture is highly integrated,Optimize metal bath processing procedure,Shorten processing time,Cost is saved,Solve the problems, such as that existing metal bath micronization processes technology is single simultaneously.
Description
Technical field
The invention belongs to metal material processing technical fields, are related to a kind of device of multi- scenarios method thinning metal solidification texture
And its process for refining.
Background technology
In existing metal material processing technical field, ideal metal solidification texture is that have uniform, tiny equiax crystal,
Isometric anisotropic crystalline is small, when processing deformation uniformly, have excellent performance, plasticity it is good, be conducive to casting and subsequent processing.Obtain this
Kind tissue, it usually needs micronization processes are carried out to metal bath.Doctor Dreyfus in 1932 is from Faraday's electromagnetic induction principle
Middle discovery, the induced field that low speed moves can generate the stirring action of strength in molten steel, and be applied to metal bath processing
In;Nineteen ninety, M Nakada etc. act on the process of setting of alloy using pulse current for the first time, and solidified structure is refined.Fiber crops
Polytechnics of province Flemings professors et al. carry out mechanical agitation to molten metal and prepare the solidified structure with nearly chondritic.
In recent years, metal solidification texture refinement technology is quickly grown, and processing means are continuously increased, and research and commercial Application are also by wide
General concern, and cause the great attention of people.
Metal solidification texture thinning processing method mainly has at present:Electrical resistance heating, magnetic field facture, mechanical mixing method,
Ultrasonic activation method, overcurrent cooling method, pulsed current annealing method, Metamorphism treatment method etc., there is processing in existing processing method
Technology is single or process flow is long or thinning effect is poor or processing procedure is discontinuous, or the problems such as introducing impurity element, can not
It efficiently obtains good solidified structure and improves melt quality.Such as:Electrical resistance heating needs, by Remelting Metals, to pass through heat transfer shape
Formula carries out, and heating speed is slow;Overcurrent cooling method process flow is long, and since chill effect be easy to cause tissue in crystallization process
It refines uneven;Fining agent or alterant is added in Metamorphism treatment method, can introduce impurity element, and shadow is generated to metal melt ingredients
It rings.
Invention content
In view of this, the present invention is single in order to solve the problems, such as existing metal bath micronization processes technology, it is more to provide one kind
The device of field coupling thinning metal solidification texture and the metal solidification texture process for refining for simplifying casting.
In order to achieve the above objectives, the present invention provides a kind of device of multi- scenarios method thinning metal solidification texture, including pedestal
With the crystallizer on pedestal, crystallizer is interior to contain metal bath, pacifies successively from inside to outside on the pedestal of crystallizer periphery
Equipped with ringent cooling dome, insulating boot, seal closure and guide post, it is wound with induction coil outside cooling dome, the top of cooling dome can
Dismounting is equipped with lateral holder, and the sealing cover of insulator material is slidably fitted on guide post, is installed above the middle part of sealing cover
There is motor, the stirring rod being connected with motor is installed below the middle part of sealing cover, is installed on the sealing cover on the outside of motor
There are the electrode being threaded through on holder and thermocouple, cooling dome lower part to offer air admission hole, venthole is offered on sealing cover.
Further, further include the pulse electricity being connect respectively by conducting wire with electrode, thermocouple, motor and induction coil
Source, moisture recorder, rotating speed controller and sensing heating instrument.
Further, further include that the pulse power, moisture recorder, rotating speed controller and sensing heating instrument, the pulse power pass through
Second conducting wire is connected with electrode, and moisture recorder is connected by compensating wire with thermocouple, and rotating speed controller passes through the first conducting wire
It is connected with motor, sensing heating instrument is connected by bucking coil with induction coil.
Further, cooling water hole is equipped in cooling dome, the cooling water hole of cooling dome upper end is inlet opening, cooling dome lower end
Cooling water hole is apopore.
Further, the backing positions on cooling dome are adjustable, and electrode and thermocouple are fastened on holder.
Further, lifter is equipped in the middle part of pedestal, crystallizer is mounted on lifter.
A kind of process for refining of multi- scenarios method metal solidification texture, includes the following steps:
A, metal bath being fitted into the crystallizer on lifter, lifter is risen up by pedestal in cooling dome,
So that crystallizer is fitted close with cooling dome, the electrode and thermocouple on sealing cover are positioned by holder, is adjusted
Whole electrode, thermocouple and motor position so that sealing cover is fitted close by the decline of guide post with seal closure, then from cooling
The air admission hole of cover lower section is passed through protective gas, and gas is discharged from the venthole on sealing cover;
B, sensing heating instrument is opened, generating thermocouple effect by induction coil heats metal bath, passes through thermograph
Instrument records the metal bath temperature of thermocouple detection, after metal bath fusing, declines the stirring rod on motor, opens simultaneously
Rotating speed controller carries out mechanical agitation to metal bath, and electrode is declined, and opens the pulse power, pulse is passed through into metal bath
Electric current adjusts pulse current magnitude, stirring rod mixing speed, induction by the pulse power, rotating speed controller and sensing heating instrument
Coil heats speed carries out electric field, the field of force, thermal field, magnetic coupling collective effect in metal bath, promotes forming core, be crushed dendrite,
Crystal grain thinning;
C, after metal bath refinement, the pulse power, rotating speed controller and sensing heating instrument is closed, is risen on sealing cover
Stirring rod, electrode and thermocouple, cooling water circulation is carried out by inlet opening and apopore, the closing temperature after metal structure solidification
Recorder continues to rise sealing cover, declines lifting platform, remove crystallizer, the metal solidification texture refined.
The beneficial effects of the present invention are:
1, the device of multi- scenarios method thinning metal solidification texture of the present invention generates thermocouple effect to metal by induction coil
Melt heats, and the metal bath temperature of thermocouple detection is recorded by moisture recorder, after metal bath fusing, declines electronic
Stirring rod on machine opens simultaneously rotating speed controller and carries out mechanical agitation to metal bath, electrode is declined, and opens pulse electricity
Source is passed through pulse current into metal bath, and it is big to adjust pulse current by the pulse power, rotating speed controller and sensing heating instrument
Small, stirring rod mixing speed, induction coil heating speed carries out electric field, the field of force, thermal field, magnetic field multi- scenarios method and collective effect
In metal bath, promote forming core, be crushed dendrite, the apparatus structure of crystal grain thinning, the multi- scenarios method thinning metal solidification texture is high
Degree is integrated, optimizes metal bath processing procedure, shortens processing time, has saved cost, while it is molten to solve existing metal
The single problem of body micronization processes technology.
2, the device of multi- scenarios method thinning metal solidification texture of the present invention can be to gold in thinning metal solidification texture
Electric current, temperature, mixing speed and the magnetic field intensity for belonging to melt treatment process are controlled, and parameter can be adjusted, can be according to specific
Condition reasonably selects parameter, efficiently realizes the refinement of metal solidification texture, enhances the thinning effect of metal solidification texture.
3, it is thin to be suitable for different metal and alloy structure for the device of multi- scenarios method thinning metal solidification texture of the present invention
Change, use scope is wide, and collective effect is in metal bath in electric field, thermal field, the field of force and the multi- scenarios method in magnetic field, and carries out real-time
Regulation and control, shorten processing time, enhance process control.
4, the device of multi- scenarios method thinning metal solidification texture of the present invention, can be followed by inert gas shielding and cooling water
Ring, and good leak tightness effectively avoid metal bath high-temperature oxydation, and can be needed to control melt cooling velocity according to processing.
5, the device of multi- scenarios method thinning metal solidification texture of the present invention, can be quickly into the melting of row metal, heat preservation, knot
Brilliant, transfer and reprocessing simplify casting and refinement flow, optimize treatment process, cost is relatively low.
6, the characteristics of device of multi- scenarios method thinning metal solidification texture of the present invention is that structure assembly degree is high, state modulator essence
Degree is high, and easy to operate, stability is good, and treatment effeciency is high.
Description of the drawings
In order to keep the purpose of the present invention, technical solution and advantageous effect clearer, the present invention provides following attached drawing and carries out
Explanation:
Fig. 1 is the apparatus structure schematic diagram of multi- scenarios method thinning metal solidification texture of the present invention.
Specific implementation mode
Below in conjunction with attached drawing, the preferred embodiment of the present invention is described in detail.
Reference numeral in Figure of description includes:
The pulse power 1, moisture recorder 2, rotating speed controller 3, sensing heating instrument 4, bucking coil 5, pedestal 6, air admission hole
7, lifter 8, crystallizer 9, metal bath 10, cooling dome 11, apopore 12, insulating boot 13, seal closure 14, induction coil 15,
Stirring rod 16, electrode 17, inlet opening 18, holder 19, thermocouple 20, guide post 21, venthole 22, motor 23, sealing cover 24,
One conducting wire 25, compensating wire 26, the second conducting wire 27.
The device of multi- scenarios method thinning metal solidification texture as shown in Figure 1, including pedestal 6 and on pedestal 6
The middle part of crystallizer 9, pedestal 6 is equipped with lifter 8, and crystallizer 9 is mounted on lifter 8.Metal bath 10 or alloy raw material
It is fitted into crystallizer 9, crystallizer 9 is mounted on lifter 8, is risen up into cooling dome 11 by pedestal 6 by lifter 8, lift
Device 8 fixes the part of crystallizer 9 and cooling dome 11 is fitted close.
The cooling dome 11 of construction opening shape, insulating boot 13, seal closure successively from inside to outside on the pedestal 6 of the periphery of crystallizer 9
14 and guide post 21, induction coil 15 is wound outside cooling dome 11, and lateral branch is detachably installed on the top of cooling dome 11 by bolt
Frame 19, holder 19 is insulator and position is adjustable, and liftable, and electrode 17 and thermocouple 20, temperature-measuring range are fixed on holder 19
It is 25~1700 DEG C.The sealing cover 24 of slidable fit insulator material on guide post 21, sealing cover 24 can be lifted along guide post 21,
Electrode 17, thermocouple 20 and motor 23 are mounted on sealing cover 24, also liftable.Installation is electronic above the middle part of sealing cover 24
Machine 23, the stirring rod 16 that installation is connected with motor 23 below the middle part of sealing cover 24, the pulse power 1 by the second conducting wire 27 and
Electrode 17 is connected, and moisture recorder 2 is connected by compensating wire 26 with thermocouple 20, and rotating speed controller 3 passes through the first conducting wire 25
It is connected with motor 23, sensing heating instrument 4 is connected by bucking coil 5 with induction coil 15, and then constitutes circuit.The pulse power
1, moisture recorder 2, rotating speed controller 3 and sensing heating instrument 4, respectively coordination electrode 17, thermocouple 20, motor 23 and induction
Coil 15 can be used individually or simultaneously, in the processing procedure of metal bath 10 carry out electric current, temperature, mixing speed and
The real-time control of magnetic field intensity.
11 lower part of cooling dome opens up air admission hole 7, and venthole 22 is opened up on sealing cover 24, and air admission hole 7 and venthole 22 are distinguished
It is passed through and is discharged protective gas, prevents metal bath 10 from aoxidizing.Be equipped with cooling water hole in cooling dome 11,11 upper end of cooling dome it is cold
But water hole is inlet opening 18, and the cooling water hole of 11 lower end of cooling dome is apopore 12, is carried out by inlet opening 18 and apopore 12
Cooling water circulation, to control the cooling velocity of metal bath 10 in crystallizer 9.
A kind of process for refining of multi- scenarios method metal solidification texture, includes the following steps:
A, metal bath 10 is fitted into the crystallizer 9 on lifter 8, lifter 8 rises up into cooling by pedestal 6
In cover 11 so that crystallizer 9 is fitted close with cooling dome 11, and the electrode 17 and thermocouple 20 on sealing cover 24 lead to
It crosses holder 19 to be positioned, adjustment electrode 17,23 position of thermocouple 20 and motor so that sealing cover 24 passes through under guide post 21
Drop is fitted close with seal closure 14, then protective gas is passed through from the air admission hole 7 of 11 lower section of cooling dome, from going out on sealing cover 24
Gas is discharged in stomata 22, prevents metal bath 10 from aoxidizing;
B, sensing heating instrument 4 is opened, generating thermocouple effect by induction coil 15 heats metal bath 10, passes through temperature
Recorder 2 records 10 temperature of metal bath that thermocouple 20 detects, and after the fusing of metal bath 10, declines stirring on motor 23
Bar 16 is mixed, rotating speed controller 3 is opened simultaneously and mechanical agitation is carried out to metal bath 10, electrode 17 is declined, open the pulse power
1, it is passed through pulse current into metal bath 10, pulse electricity is adjusted by the pulse power 1, rotating speed controller 3 and sensing heating instrument 4
Size is flowed, 16 mixing speed of stirring rod, 15 heating speed of induction coil, progress electric field, the field of force, thermal field, magnetic coupling are made jointly
For metal bath 10, promote forming core, is crushed dendrite, crystal grain thinning;
C, after metal bath 10 refines, the pulse power 1, rotating speed controller 3 and sensing heating instrument 4 are closed, is risen close
Stirring rod 16, electrode 17 and thermocouple 20 in capping 24 carry out cooling water circulation by inlet opening 18 and apopore 12, wait for metal
Closing temperature recorder 2 after tissue coagulation continues to rise sealing cover 24, declines lifting platform, remove crystallizer 9, refined
Metal solidification texture.
Embodiment 1
For refining hypereutectic high chromium cast iron (for liquidus curve for 1337 DEG C, solidus is 1276 DEG C) solidified structure, and tie
The process for refining for closing multi- scenarios method thinning metal solidification texture is further described:
As shown in Figure 1, hypereutectic high chromium cast iron is fitted into crystallizer 9, crystallizer 9 is mounted on lifter 8, by rising
Drop device 8 is risen up by pedestal 6 in cooling dome 11, and lifter 8 fixes the part of crystallizer 9 and cooling dome 11 is fitted close;It will be electric
Pole 17 and thermocouple 20 are mounted on sealing cover 24, are positioned or are fixed by holder 19, and motor 23 connects stirring rod 16
And mounted on upper, adjustment electrode 17,23 position of thermocouple 20 and motor, sealing cover 24 pass through guide post 21 and decline and seal closure 14
It is fitted close, argon gas is passed through by air admission hole 7, gas is discharged by venthole 22, processing whole process has gas shield;Open sensing heating
Instrument 4 generates thermocouple effect by induction coil 15 and is heated to hypereutectic high chromium cast iron, records temperature by moisture recorder 2, rise
Temperature declines stirring rod 16 to 1360 DEG C of heat preservations, opens rotating speed controller 3 and carries out mechanical agitation, declines electrode 17, opening pulse electricity
Source 1 is passed through pulse current, adjusts pulse voltage 1400V by the pulse power 1, rotating speed controller 3 and sensing heating instrument 4 respectively,
Frequency 50Hz, pulsewidth 30 μ s, mixing speed 800r/min, heating power 45Hz, progress electric field, the field of force, thermal field, magnetic coupling are total
Same-action promotes forming core in hypereutectic high chromium cast iron, is crushed dendrite, crystal grain thinning;Processing time 5min, the closing pulse power 1,
Rotating speed controller 3 and sensing heating instrument 4, rise stirring rod 16, electrode 17 and thermocouple 20, by inlet opening 18 and apopore 12 into
Row cooling water circulation, the closing temperature recorder 2 after temperature is down to 1100 DEG C rise sealing cover 24, decline lifting platform, remove knot
Brilliant device 9, and then the hypereutectic high chromium cast iron solidified structure refined.
Embodiment 2
Below with refine Cu-10%Sn alloys (liquidus curve be 1021 DEG C, solidus be 830 DEG C) for, and combine more
The process for refining of coupling thinning metal solidification texture is further described:
As shown in Figure 1, Cu-10%Sn alloys are fitted into crystallizer 9, crystallizer 9 is mounted on lifter 8, by lifting
Device 8 is risen up by pedestal 6 in cooling dome 11, and lifter 8 fixes the part of crystallizer 9 and cooling dome 11 is fitted close;By electrode
17 and thermocouple 20 be mounted on sealing cover 24 on, positioned or fixed by holder 19, motor 23 connect stirring rod 16 simultaneously
Mounted on upper, adjustment electrode 17,23 position of thermocouple 20 and motor, sealing cover 24 is declined tight with seal closure 14 by guide post 21
Close fit is passed through argon gas by air admission hole 7, gas is discharged by venthole 22, processing whole process has gas shield;Open sensing heating instrument
4, thermocouple effect is generated by induction coil 15, Cu-10%Sn alloys are heated, and melted, temperature is recorded by moisture recorder 2
Degree, keeps the temperature when the temperature to 1040 DEG C, declines stirring rod 16 and electrode 17, opens rotating speed controller 3 and carries out mechanical agitation, opens
The pulse power 1 is passed through pulse current, adjusts pulse voltage by the pulse power 1, rotating speed controller 3 and sensing heating instrument 4 respectively
1200V, frequency 50Hz, pulsewidth 100 μ s, mixing speed 600r/min, heating power 50Hz carry out electric field, the field of force, thermal field, magnetic
Field coupling collective effect promotes forming core in Cu-10%Sn alloys, is crushed dendrite, crystal grain thinning;3min is handled, pulse electricity is closed
Source 1, rotating speed controller 3 and sensing heating instrument 4 rise stirring rod 16, electrode 17 and thermocouple 20, by inlet opening 18 and apopore
12 carry out cooling water circulation, by the real-time record temperature of moisture recorder 2, the closing temperature recorder 2 after temperature is down to 750 DEG C,
Rise sealing cover 24, declines lifting platform, remove crystallizer 9, the Cu-10%Sn Solidification Structures refined.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (7)
1. a kind of device of multi- scenarios method thinning metal solidification texture, which is characterized in that including pedestal and on pedestal
Crystallizer, crystallizer is interior to contain metal bath, is sequentially installed with from inside to outside on the pedestal of the crystallizer periphery ringent
Cooling dome, insulating boot, seal closure and guide post, the cooling dome are wound with induction coil outside, and the top of the cooling dome is detachable
Lateral holder is installed, the sealing cover of insulator material, the middle part top of the sealing cover are slidably fitted on the guide post
Motor is installed, the stirring rod being connected with motor, the sealing on the outside of the motor are installed below the middle part of sealing cover
The electrode and thermocouple for being equipped with and being threaded through on holder are covered, the cooling dome lower part offers air admission hole, opened up on sealing cover
There is venthole.
2. the device of multi- scenarios method thinning metal solidification texture as described in claim 1, which is characterized in that further include respectively with electricity
The pulse power, moisture recorder, rotating speed controller and the induction that pole, thermocouple, motor and induction coil are connected by conducting wire
Heating instrument.
3. the device of multi- scenarios method thinning metal solidification texture as described in claim 1, which is characterized in that further include pulse electricity
Source, moisture recorder, rotating speed controller and sensing heating instrument, the pulse power are connected by the second conducting wire with electrode, thermograph
Instrument is connected by compensating wire with thermocouple, and rotating speed controller is connected by the first conducting wire with motor, and sensing heating instrument passes through
Bucking coil is connected with induction coil.
4. the device of multi- scenarios method thinning metal solidification texture as described in Claims 2 or 3, which is characterized in that the cooling dome
Interior to be equipped with cooling water hole, the cooling water hole of cooling dome upper end is inlet opening, and the cooling water hole of cooling dome lower end is apopore.
5. the device of multi- scenarios method thinning metal solidification texture as claimed in claim 4, which is characterized in that on the cooling dome
Backing positions are adjustable, and electrode and thermocouple are fastened on holder.
6. the device of multi- scenarios method thinning metal solidification texture as claimed in claim 5, which is characterized in that the middle part of the pedestal
It is equipped with lifter, crystallizer is mounted on lifter.
7. a kind of process for refining of multi- scenarios method metal solidification texture, which is characterized in that include the following steps:
A, metal bath is fitted into the crystallizer on lifter, lifter is risen up by pedestal in cooling dome so that
Crystallizer is fitted close with cooling dome, and the electrode and thermocouple on sealing cover are positioned by holder, adjustment electricity
Pole, thermocouple and motor position so that sealing cover is fitted close by the decline of guide post with seal closure, then under cooling dome
The air admission hole of side is passed through protective gas, and gas is discharged from the venthole on sealing cover;
B, sensing heating instrument is opened, generating thermocouple effect by induction coil heats metal bath, remembers by moisture recorder
The metal bath temperature for recording thermocouple detection declines the stirring rod on motor, opens simultaneously rotating speed after metal bath fusing
Controller carries out mechanical agitation to metal bath, and electrode is declined, and opens the pulse power, and pulse electricity is passed through into metal bath
Stream adjusts pulse current magnitude, stirring rod mixing speed, the line of induction by the pulse power, rotating speed controller and sensing heating instrument
Heating speed is enclosed, electric field, the field of force, thermal field, magnetic coupling collective effect is carried out in metal bath, promotes forming core, be crushed dendrite, carefully
Change crystal grain;
C, after metal bath refinement, the pulse power, rotating speed controller and sensing heating instrument is closed, stirring on sealing cover is risen
Bar, electrode and thermocouple are mixed, cooling water circulation is carried out by inlet opening and apopore, closing temperature records after metal structure solidification
Instrument continues to rise sealing cover, declines lifting platform, remove crystallizer, the metal solidification texture refined.
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CN114939367A (en) * | 2022-06-17 | 2022-08-26 | 燕山大学 | Device and method for preparing semi-solid metal by combining permanent magnetic stirring and mechanical stirring |
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