CN110102220A - Permanent magnet mixing plant and melt preparation method suitable for melt preparation - Google Patents
Permanent magnet mixing plant and melt preparation method suitable for melt preparation Download PDFInfo
- Publication number
- CN110102220A CN110102220A CN201910373183.4A CN201910373183A CN110102220A CN 110102220 A CN110102220 A CN 110102220A CN 201910373183 A CN201910373183 A CN 201910373183A CN 110102220 A CN110102220 A CN 110102220A
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- melt
- crucible
- insulating sleeve
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 38
- 238000002156 mixing Methods 0.000 title claims abstract description 23
- 230000001105 regulatory effect Effects 0.000 claims abstract description 31
- 238000003756 stirring Methods 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims description 50
- 239000000463 material Substances 0.000 claims description 20
- 238000009413 insulation Methods 0.000 claims description 16
- 230000006698 induction Effects 0.000 claims description 12
- 239000000155 melt Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 238000003723 Smelting Methods 0.000 claims description 5
- 230000005389 magnetism Effects 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 239000011819 refractory material Substances 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 16
- 229910052751 metal Inorganic materials 0.000 description 14
- 239000002184 metal Substances 0.000 description 14
- 239000007787 solid Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 239000002002 slurry Substances 0.000 description 8
- 229910000838 Al alloy Inorganic materials 0.000 description 6
- 230000008901 benefit Effects 0.000 description 6
- 238000013019 agitation Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 238000010907 mechanical stirring Methods 0.000 description 4
- 229910021652 non-ferrous alloy Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 229910000861 Mg alloy Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 229910052571 earthenware Inorganic materials 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229910001158 Alnico 8 Inorganic materials 0.000 description 1
- 229910001152 Bi alloy Inorganic materials 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910000712 Boron steel Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910000807 Ga alloy Inorganic materials 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000012056 semi-solid material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000007613 slurry method Methods 0.000 description 1
- 238000010099 solid forming Methods 0.000 description 1
- 238000003836 solid-state method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F29/00—Mixers with rotating receptacles
- B01F29/60—Mixers with rotating receptacles rotating about a horizontal or inclined axis, e.g. drum mixers
- B01F29/62—Mixers with rotating receptacles rotating about a horizontal or inclined axis, e.g. drum mixers without bars, i.e. without mixing elements; characterised by the shape or cross section of the receptacle, e.g. of Y-, Z-, S- or X- shape; with cylindrical receptacles rotating about an axis at an angle to their longitudinal axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/45—Magnetic mixers; Mixers with magnetically driven stirrers
- B01F33/451—Magnetic mixers; Mixers with magnetically driven stirrers wherein the mixture is directly exposed to an electromagnetic field without use of a stirrer, e.g. for material comprising ferromagnetic particles or for molten metal
-
- 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
- B01F35/93—Heating or cooling systems arranged inside the receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hard Magnetic Materials (AREA)
Abstract
The present invention provides a kind of permanent magnet mixing plants and melt preparation method suitable for melt preparation, including fixed device, rotating device, temperature regulating device, the fixed device includes fixing axle (6), fixed disc (10), crucible (11), insulating sleeve (2), the fixing axle (6) is connected and fixed plectane (10), fixed disc (10) connects insulating sleeve (2), it is internal that crucible (11) is located at insulating sleeve (2), the rotating device is connected and fixed axis (6), the temperature regulating device setting is internal in crucible (11).The configuration of the present invention is simple is compact, easy to maintain, and has the characteristics that high-efficient, low energy consumption；It is stirred using contactless permanent magnet, melt will not be contaminated.The present invention uses single source, and is provided with heat-proof device, so that Temperature Field Control is easy；In addition heat source is located at crucible center, avoids generating central vortices, reduces melt center since stirring generates the quantity of defect.
Description
Technical field
The present invention relates to a kind of melt preparation technical fields, stir more particularly to a kind of permanent magnet suitable for melt preparation
Mixing equipment and melt preparation method.
Background technique
With the development in epoch and science and technology, the requirement to material property is also higher and higher.Magnetic field is all new work all the time
The focus of process.Ingot quality can be significantly improved by applying external force field in casting process, improve ingot casting performance；External force field master
It to include the methods of mechanical stirring, electric field, magnetic field, ultrasonic wave.Applying magnetic field is a kind of contactless melt treatment mode, no
Only promote temperature field and field of flow uniform and stable, reduces the defect generated in casting process, and contactless processing mode is not
It can contaminated melt.The addition in magnetic field can be equally used for purification melt, despumation.Addition rotating excitation field can make melt
Mixing effect is more violent, can also serve as the effective ways that Second Phase Particle adds in composite material.
The addition of rotating excitation field can also prepare semi-solid material.Semi-solid forming method is between liquid condition shaping and solid-state
Method between molding, a kind of novel molding proposed by the Flemings and Spencer of the Massachusetts Institute of Technology in 1971
Method.Its main process is, by the intervention of external force, to reduce dendrite in the process of setting of metal and formed, it is equal to prepare pattern
The product of one equiax crystal.Nowadays the equipment for preparing semi solid slurry mainly has mechanical stirring equipment, electromagnetic stirring equipment and permanent magnetism
Body mixing plant.Mechanical stirring equipment is simple, and material preparation cost is low, and easily controllable and operation is relatively simple, is generally used for section
Grind the test with new material.But since its stirring efficiency is low；And mixing plant is needed directly to contact with melt, so leading
Slurry is caused to be easy contaminated, the mixing plant service life is low, so being rarely used in industrial production.It is compared to mechanical stirring, electromagnetism stirs
It mixes and is non-contact with the main advantage of permanent magnet stirring, double of slurry of solids will not be contaminated, and volume gas is relatively fewer.It stirs
It mixes uniform and easily controllable, continuous casting may be implemented, production efficiency is higher.
A kind of Chinese utility model patent (system of electromagnetic agitation semi-solid metal slurry of Publication No. CN206550302U
Standby device) a kind of preparation facilities of electromagnetic agitation semi-solid metal slurry is disclosed, including block stick, fusion crucible, intermediate frequency sense
Answer heater, magnetic stirrer, stirring crucible, slurry guide rail, interior transport tube, outer transport tube.The patented technology there are still with
Lower problem: the patent mainly generates alternating magnetic field using AC field and carries out electromagnetic agitation, and this agitating device needs when running
Water cooling is carried out to coil, and kelvin effect is obvious, to ingot casting center mixing effect weaker (C.K.Jin, Microstructure
of Semi-Solid Billets Produced by Electromagnetic Stirring and Behavior of
Primary Particles during the Indirect Forming Process,Metals 8(4)(2018)271)。
Permanent magnet stirring is to obtain rotating excitation field using rotation high magnetic flux density permanent magnet, and magnetic fields generate alternating current in melt
To achieve the purpose that stirring.Compared to electromagnetic agitation, permanent magnet stirring have low energy consumption (about same electromagnetic agitation energy consumption
20%) the advantages that, equipment design is simply and magnetic induction intensity is higher (J.Zeng, et al.Metallurgical and
Materials Transactions B 48(6)(2017)3083-3100).Permanent magnet stirring means can improve the table of casting
Face and internal soundness substantially reduce shrinkage cavity shrinkage porosity and solute segregation, and expand the region of equiax crystal.
A kind of Chinese invention patent (semi-solid alloy solution permanent magnetism that can be used for testing of Publication No. CN104162380A
Agitating device) a kind of semi-solid alloy melt permanent magnetism agitating apparatus that can be used for testing is disclosed, by several permanent magnets and watch
It takes motor and control system is assembled, rotating cylinder is done using the soft magnetic materials of high permeability, design fixed steel construction, guarantee air gap
It is smaller, and increase temperature measurement system.The inventive technique there are still following problems: crucible outer wall and permanent magnet in the invention
Between without heat-proof device, permanent magnet working environment is severe, and to the temperature of system control it is unfavorable.Permanent magnet selects ALNiCo8
High temperature permanent magnets iron, it is expensive and easy to damage, it is difficult industrially to be applied on a large scale, and center magnetic induction intensity is not
Higher than 0.08T, magnetic induction intensity is too low to cause stirring efficiency low.There was only temperature measuring equipment and heating rod in device, there is no temperature
Control module is spent, does not have the function of temperature automatic adjustment.It is solid that this device is only used for the low magnesium alloy of part forming temperature half
The preparation of state solution, operating temperature are no more than 550 DEG C, it is impossible to be used in handle most forming temperature high magnesium alloy and aluminium alloy
Deng.
Therefore, it is badly in need of developing that a kind of efficient stable, low energy consumption, magnetic induction intensity is high, and adapts to non-ferrous alloy melt system
Standby permanent magnet agitating device.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of permanent magnet stirrings suitable for melt preparation
Equipment and melt preparation method.
According to an aspect of the present invention, a kind of permanent magnet mixing plant suitable for melt preparation, including fixation are provided
Device, rotating device, temperature regulating device, the fixed device include fixing axle, fixed disc, crucible, insulating sleeve, the fixation
Axis connection fixed disc, fixed disc connect insulating sleeve, and crucible is located inside insulating sleeve, and the rotating device is connected and fixed
Axis, the temperature regulating device are arranged inside crucible.
Preferably, the rotating device include permanent magnet, permanent magnet backboard, permanent magnet retaining plate, armature, bearing,
Belt pulley, rotation upper plate, motor, the permanent magnet is by permanent magnet backboard, permanent magnet retaining plate defined position, permanent magnet, forever
Permanent magnet insert, permanent magnet insert upper end connection rotation upper plate, permanent magnet edge are formed after magnet backboard, permanent magnet retaining plate assembling
Block lower end connects armature, and armature connects motor by belt pulley and belt, and belt pulley is connected and fixed axis by bearing,
The permanent magnet insert is located in the circumferential direction of insulating sleeve, and rotation upper plate connects insulating sleeve.
Preferably, the temperature regulating device includes heating bucket, thermal insulation board, heat-conducting medium, heating rod, sealing-plug, temperature control
Thermal insulation board is arranged on the heating bucket external barrel wall for device, display, and filling heat-conducting medium is simultaneously close by sealing-plug inside heating bucket
Envelope, the heating rod are placed in heat-conducting medium through sealing-plug, and heating rod connects temperature controller and display, described heat-insulated
Plate connects insulating sleeve bucket, and the crucible is located at the space interior that insulating sleeve and thermal insulation board limit.
Preferably, the permanent magnet insert is sector structure, and muti-piece permanent magnet insert is uniform in the circumferential direction of insulating sleeve
Distribution.
Preferably, the quantity of the permanent magnet insert get between even number, it is solid that permanent magnet insert is spliced into an annulus
It is scheduled on armature and rotates between upper plate and be located in the circumferential direction of insulating sleeve.
Preferably, melt is contained in the crucible, permanent magnet is at a distance from melt or crucible in 20mm hereinafter, permanent magnet
Magnetic induction intensity be 0.1~3T.
Preferably, the permanent magnet backboard, permanent magnet retaining plate are using no magnetic high impact material；The fixing axle, fixation
Plectane, armature, rotation upper plate are all made of no magnetic heat-resisting material.
Preferably, the ratio between the outer diameter of the heating bucket and the internal diameter of crucible are 0.3~0.8；The heat-conducting medium is using low
Melting metal material；The heating bucket is using no magnetic heat-resisting material；The heating rod uses heat shock resistance material；It is described heat-insulated
Sleeve, thermal insulation board use high-temperature resistant thermal insulating material.
It preferably, further include pulling apparatus, the temperature regulating device connects pulling apparatus, and by pulling apparatus relative to earthenware
Crucible movement, temperature regulating device using when be placed into inside crucible by pulling apparatus, temperature regulating device passes through pulling apparatus when not in use
Remove crucible；
The fixed device, rotating device, each component of temperature regulating device junction be all made of the connection of no magnetic heat-resisting material；
The crucible is using no magnetic high temperature resistant refractory material.
According to another aspect of the present invention, a kind of stir using the permanent magnet for being suitable for melt preparation is provided to set
Standby melt preparation method, includes the following steps:
Step 1: the molten alloy in smelting furnace prepares preliminary melt；
Step 2: by the preliminary melt transfer of preparation into crucible, temperature regulating device being placed by crucible by pulling apparatus
In, and holding temperature is arranged by temperature regulating device, so that preliminary melt is maintained at set temperature；
Step 3: motor, the permanent magnet rotation of motor driven rotating device, thus to preliminary are opened after setting motor speed
Melt is stirred, to get to the melt for subsequent processing prepared after stirring setting duration.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1, the configuration of the present invention is simple is compact, adopts a split structure, and fixed device, rotating device, temperature regulating device are mutually only
It is vertical, it is easy to maintain；It is stirred using contactless permanent magnet, melt will not be contaminated.
2, the present invention carries out center heating using single source, and heating efficiency is high, and is provided with heat-proof device, so that temperature
Field control is easy；In addition heat source is located at crucible center, avoids generating central vortices, reduces melt center and lacks since stirring generates
Sunken quantity.
3, the present invention has energy-efficient advantage using heat-proof device and permanent magnet stirring, is adapted to non-ferrous alloy not
Synthermal melt preparation.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is schematic cross-sectional view of the invention.
Fig. 2 is overlooking structure diagram of the invention.
It is shown in figure:
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
In the description of the present application, it is to be understood that term " on ", "front", "rear", "left", "right", " is erected at "lower"
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is orientation based on the figure or position
Relationship is set, description the application is merely for convenience of and simplifies description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.
The present invention provides a kind of permanent magnet mixing plant suitable for melt preparation, including fixed device, rotating device, control
Warm device.Fixing axle 6 in fixed device is connected with the belt pulley 8 in rotating device by bearing 7.Fixing axle 6 passes through bolt
It is fastened in external base, fixed disc 10 is fixed by screw in fixing axle 6, and insulating sleeve 2 is fixed on fixed circle
On plate 10, crucible 11 is placed in insulating sleeve 2, and the melt being placed in crucible is stirred by the permanent magnet 4 in rotating device.Temperature control
The center for being placed on crucible 11 when bucket 16 uses is heated in device, and temperature control is provided, is removed after work.Heat bucket
Low-melting-point metal is filled in 16 and is sealed.The present invention adopts a split structure, fixed device, rotating device, temperature regulating device
Independently of each other；Center heating efficiently, reduces the generation of metal defects, and heat-proof device and permanent magnet stirring have energy-efficient excellent
Gesture adapts to the different temperatures melt preparation of non-ferrous alloy, the melt suitable for non-ferrous alloys such as aluminium alloy, kirsite or magnesium alloys
Preparation.
The present invention controls temperature using heating bucket 16, heats and stores low-melting-point metal (low-temperature metal) and heating rod in bucket 16
17.Low-melting-point metal can more effectively transmit the heat generated in heating rod 17, be compared to the heat transfer mediums such as water and oil, low
Melting point metals thermal coefficient improves 100 times or more and volatility is lower, makes heat is more uniform quickly to transmit from heating rod 17
To entire heating bucket 16.The present invention cancels outer ring induction heating, so that melt 12 melts and is sirred and separated, it is easier to control melt
12 mass；And only exist single source, for heat control more precisely and conveniently.The present invention is provided with heat-insulated dress
It sets, heat-proof device can preferably control 12 temperature of melt, be unlikely to be influenced to generate larger fluctuation by external environment, equally make to melt
The high temperature of body 12 is unlikely to pass to outside.By the way of the present invention heats bucket 16 using center, so that original 11 central area of crucible
Melt squeezed around sidewall of crucible, it is closer apart from permanent magnet 4, improve stirring efficiency；And in whipping process, 12 liquid level of melt
The defects of will not being destroyed, hardly generate central vortex, effectively reducing volume gas and be mingled with, it is possible to be stirred using higher
Mix rate.The present invention utilizes permanent magnet stirring melt, belongs to contactless stirring means, will not contaminated melt；And permanent magnet
Stirring is compared to 80% or more electromagnetic induction stirring energy conservation, and in the today for advocating energy-saving and emission-reduction, the equipment is more for advantage.This hair
Bright cancellation outer ring induction heating can make crucible 11 bigger, and melt 12 receives more magnetic induction lines, mention closer to permanent magnet 4
High stirring efficiency.Heat-proof device of the present invention prevents permanent magnet because of high temperature and demagnetization, permanent magnet retaining plate 5 and permanent magnet backboard 3
It can be very good that permanent magnet 4 is protected not to be hit, make equipment that there is the longer service life.The present invention adopts a split structure, temperature control
Device, rotating device, fixed device are separated from each other independence, the equipment update of easy maintenance and replacement part and next step.
A kind of permanent magnet mixing plant suitable for melt preparation provided according to the present invention, as shown in Figure 1 and Figure 2, including
Fixed device, rotating device, temperature regulating device, the fixed device includes fixing axle 6, fixed disc 10, crucible 11, insulating sleeve
2, the fixing axle 6 is connected and fixed plectane 10, and fixed disc 10 connects insulating sleeve 2, and crucible 11 is located inside insulating sleeve 2,
The rotating device is connected and fixed axis 6, and the temperature regulating device is arranged inside crucible 11.
The rotating device includes permanent magnet 4, permanent magnet backboard 3, permanent magnet retaining plate 5, armature 9, bearing 7, skin
Belt wheel 8, rotation upper plate 14, motor, the permanent magnet 4 pass through permanent magnet backboard 3,5 defined position of permanent magnet retaining plate, permanent magnet
4, permanent magnet backboard 3, permanent magnet retaining plate 5 form permanent magnet insert after assembling, and the connection of permanent magnet insert upper end rotates upper plate 14,
Permanent magnet insert lower end connects armature 9, and rotation upper plate 14 and armature 9 limit the position of permanent magnet insert, rotation jointly
Turn plectane 9 and motor is connected by belt pulley 8 and belt, belt pulley 8 is connected and fixed axis 6, permanent magnet insert position by bearing 7
In in the circumferential direction of insulating sleeve 2, rotation upper plate 14 connects insulating sleeve 2, and the revolving speed of the motor is 10~6000rpm.
The temperature regulating device includes heating bucket 16, thermal insulation board 1, heat-conducting medium 13, heating rod 17, sealing-plug 15, temperature control
Device processed, display are arranged thermal insulation board 1 on the 16 external barrel wall of heating bucket, heat and fill heat-conducting medium 13 inside bucket 16 and lead to
The sealing of sealing-plug 15 is crossed, the heating rod 17 is placed in heat-conducting medium 13 through sealing-plug 15, and heating rod 17 connects temperature control
Device and display processed, the thermal insulation board 1 connect insulating sleeve bucket 2, and the crucible 11 is located at insulating sleeve 2 and thermal insulation board 1 limits
Space interior, the temperature controller can control heating temperature, and the display can show heating temperature.
The permanent magnet insert is sector structure, and muti-piece permanent magnet insert is uniformly distributed in the circumferential direction of insulating sleeve 2.Institute
The quantity for stating permanent magnet insert takes even number between 2 to 32, and permanent magnet insert is spliced into an annulus and is fixed on 9 He of armature
It rotates between upper plate 14 and is located in the circumferential direction of insulating sleeve 2.Melt 12, permanent magnet 4 and melt 12 are contained in the crucible 11
Or the distance of crucible 11 in 20mm hereinafter, the magnetic induction intensity of permanent magnet 4 be 0.1~3T.The permanent magnet backboard 3, permanent magnetism
Body fixed plate 5 uses no magnetic high impact material to protect permanent magnet 4, it is preferable that uses polyethylene, phenolic resin, base styrene
Or at least one of polyamide；The fixing axle 6, fixed disc 10, armature 9, rotation upper plate 14 are all made of nothing
Magnetic heat-resisting material, it is preferable that using no magnetic high temperature resistant stainless steel.
The ratio between outer diameter and the internal diameter of crucible 11 of the heating bucket 16 are 0.3~0.8；The heat-conducting medium 13 uses eutectic
Point metal material, it is preferable that using at least one of low-melting-point metals such as gallium, tin or bismuth alloy；The heating bucket 16
Using no magnetic heat-resisting material；The heating rod 17 uses heat shock resistance material, it is preferable that uses carbon fiber, stud, stainless steel
One of；The insulating sleeve 12, thermal insulation board 1 use high-temperature resistant thermal insulating material, it is preferable that using asbestos, alumina silicate felt or
One kind of heat-resistant ceramic tube.
It further include pulling apparatus, the temperature regulating device connects pulling apparatus, and is transported by pulling apparatus relative to crucible 11
It is dynamic, temperature regulating device using when be placed into inside crucible 11 by pulling apparatus, temperature regulating device passes through pulling apparatus shifting when not in use
Crucible 11 out；The fixed device, rotating device, each component of temperature regulating device junction be all made of no magnetic heat-resisting material and connect
It connects；The crucible 11 is using no magnetic high temperature resistant refractory material, it is preferable that uses magnesia, clay, graphite, silicon carbide, corundum, nitrogen
Change one kind of boron or stainless steel.
A kind of melt system using the permanent magnet mixing plant for being suitable for melt preparation provided according to the present invention
Preparation Method includes the following steps:
Step 1: the molten alloy in smelting furnace prepares preliminary melt；
Step 2: by the preliminary melt transfer of preparation into crucible 11, temperature regulating device being placed by crucible by pulling apparatus
In 11, it is preferable that temperature regulating device is placed into 11 middle of crucible, and holding temperature is set by temperature regulating device, is made tentatively molten
Body is maintained at set temperature；
Step 3: motor is opened after setting motor speed, the permanent magnet 4 of motor driven rotating device rotates, thus to preliminary
Melt is stirred, to get to the melt for subsequent processing prepared after stirring setting duration；Heating bucket 16 is promoted and is moved
Out, crucible 11 is promoted, the melt prepared is directly poured or die casting.
Preferred embodiment:
Of the invention is divided into fixed device, rotating device, temperature regulating device, and 4 magnetic induction intensity of permanent magnet is 1T, permanent magnet 4
It is divided into eight pieces, as shown in Fig. 2, it is the pole S towards inside that magnetic induction direction, which is four pieces of the left side, four pieces of the right pole N direction is internal.It is heat-insulated
Sleeve 2 and thermal insulation board 1 are high-temperature resistant thermal insulating material, select heat-resistant ceramic tube, and crucible 11 is stainless steel using material.Fixing axle 6
It is bolted and is fixed in external base, fixed disc 10 is fixed by screw in fixing axle 6, and insulating sleeve 2 is fixed
On fixed disc 10, crucible 11 is placed in insulating sleeve 2, and melt 12 is prepared to semi solid slurry in crucible 11.Axis
It holds 7 to be fixed in fixing axle 6, belt pulley 8 is fixed on bearing 7, and belt pulley 8 is driven by belt by motor, and armature 9 is logical
It crosses screw to be fixed on belt pulley 8, permanent magnet 4 is placed in permanent magnet retaining plate 5, permanent magnet backboard 3 and permanent magnet retaining plate 5
It is connected with, limits the position of permanent magnet 4, rotation upper plate 14 and armature 9 limit the position of permanent magnet retaining plate 5 jointly
It sets.
Heating bucket 16 is placed on the center of crucible 11 when use, provides heat input, without using when by mentioning
Drawing device lifts.Thermal insulation board 1 be connected to heating bucket 16 on, heat bucket 16 in fill low melting point temperature metal and by sealing-plug 15 it is close
Envelope, sealing-plug 15 are connected to inside heating bucket 16.Heating rod 17 is placed in heating bucket 16, passes through temperature controller and display
Control heating and displays temperature.
Using the present invention prepare aluminium alloy semi-solid slurry method the following steps are included:
Step 1, the molten alloy in smelting furnace, smelting temperature are 720 DEG C, prepare A356 aluminium alloy melt；
Step 2, by A356 Al-alloy metal melt transfer into crucible 11, be arranged 590 DEG C of holding temperature, and open heating
Stick 17 keeps temperature constant, heating bucket 16 is put into the middle of crucible, keeps the temperature 20min；
Step 3 opens the rotation of motor driven permanent magnet 4, and revolving speed is set as 300rpm, after stirring 20min, that is, prepares
A356 aluminium alloy semi-solid slurry.
Step 4 closes motor and 17 power supply of heating rod, after permanent magnet 4 no longer rotates, takes out heating bucket 16, takes out earthenware
Crucible 11 gets out metal mold and is poured.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (10)
1. a kind of permanent magnet mixing plant suitable for melt preparation, which is characterized in that including fixed device, rotating device, control
Warm device, the fixed device include fixing axle (6), fixed disc (10), crucible (11), insulating sleeve (2), the fixing axle
(6) it being connected and fixed plectane (10), fixed disc (10) connects insulating sleeve (2), and crucible (11) is located at insulating sleeve (2) inside,
The rotating device is connected and fixed axis (6), and the temperature regulating device setting is internal in crucible (11).
2. the permanent magnet mixing plant according to claim 1 suitable for melt preparation, which is characterized in that the rotating dress
Set including permanent magnet (4), permanent magnet backboard (3), permanent magnet retaining plate (5), armature (9), bearing (7), belt pulley (8),
Upper plate (14), motor are rotated, the permanent magnet (4) passes through permanent magnet backboard (3), permanent magnet retaining plate (5) defined position, permanent magnetism
Permanent magnet insert, the connection rotation of permanent magnet insert upper end are formed after body (4), permanent magnet backboard (3), permanent magnet retaining plate (5) assembling
Turn upper plate (14), permanent magnet insert lower end connects armature (9), and armature (9) passes through belt pulley (8) and belt connection electricity
Machine, belt pulley (8) are connected and fixed axis (6) by bearing (7), and the permanent magnet insert is located in the circumferential direction of insulating sleeve (2), rotation
Turn upper plate (14) connection insulating sleeve (2).
3. the permanent magnet mixing plant according to claim 1 suitable for melt preparation, which is characterized in that the temperature control dress
It sets including heating bucket (16), thermal insulation board (1), heat-conducting medium (13), heating rod (17), sealing-plug (15), temperature controller, display
Thermal insulation board (1) is arranged on heating bucket (16) the external barrel wall in device, and filling heat-conducting medium (13) simultaneously passes through inside heating bucket (16)
Sealing-plug (15) sealing, the heating rod (17) are placed in heat-conducting medium (13) through sealing-plug (15), and heating rod (17) is even
Jointing temp controller and display, the thermal insulation board (1) connect insulating sleeve bucket (2), and the crucible (11) is located at insulating sleeve
(2) and thermal insulation board (1) limit space interior.
4. the permanent magnet mixing plant according to claim 2 suitable for melt preparation, which is characterized in that the permanent magnet
Insert is sector structure, and muti-piece permanent magnet insert is uniformly distributed in the circumferential direction of insulating sleeve (2).
5. the permanent magnet mixing plant according to claim 2 suitable for melt preparation, which is characterized in that the permanent magnet
The quantity of insert takes the even number between 2 to 32, and permanent magnet insert is spliced into an annulus and is fixed on armature (9) and rotation
Between plate (14) and it is located in the circumferential direction of insulating sleeve (2).
6. the permanent magnet mixing plant according to claim 2 suitable for melt preparation, which is characterized in that the crucible
(11) melt (12) are contained in, permanent magnet (4) is at a distance from melt (12) or crucible (11) in 20mm hereinafter, permanent magnet (4)
Magnetic induction intensity be 0.1~3T.
7. the permanent magnet mixing plant according to claim 2 suitable for melt preparation, which is characterized in that the permanent magnet
Backboard (3), permanent magnet retaining plate (5) are using no magnetic high impact material；The fixing axle (6), fixed disc (10), armature
(9), rotation upper plate (14) is all made of no magnetic heat-resisting material.
8. the permanent magnet mixing plant according to claim 3 suitable for melt preparation, which is characterized in that the heating bucket
(16) the ratio between internal diameter of outer diameter and crucible (11) is 0.3~0.8；The heat-conducting medium (13) uses low melting point metal material；
The heating bucket (16) is using no magnetic heat-resisting material；The heating rod (17) uses heat shock resistance material；The insulating sleeve
(12), thermal insulation board (1) uses high-temperature resistant thermal insulating material.
9. the permanent magnet mixing plant according to claim 1 suitable for melt preparation, which is characterized in that further include lifting
Device, the temperature regulating device connects pulling apparatus, and is moved by pulling apparatus relative to crucible (11), when temperature regulating device uses
It is placed into crucible (11) inside by pulling apparatus, temperature regulating device passes through pulling apparatus when not in use and removes crucible (11)；
The fixed device, rotating device, each component of temperature regulating device junction be all made of the connection of no magnetic heat-resisting material；
The crucible (11) is using no magnetic high temperature resistant refractory material.
10. a kind of melt system using the described in any item permanent magnet mixing plants suitable for melt preparation of claim 1-9
Preparation Method, which comprises the steps of:
Step 1: the molten alloy in smelting furnace prepares preliminary melt；
Step 2: by the preliminary melt transfer of preparation in crucible (11), temperature regulating device being placed by crucible by pulling apparatus
(11) in, and holding temperature is arranged by temperature regulating device, preliminary melt is made to be maintained at set temperature；
Step 3: motor, permanent magnet (4) rotation of motor driven rotating device, thus to preliminary molten are opened after setting motor speed
Body is stirred, to get to the melt for subsequent processing prepared after stirring setting duration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910373183.4A CN110102220A (en) | 2019-05-06 | 2019-05-06 | Permanent magnet mixing plant and melt preparation method suitable for melt preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910373183.4A CN110102220A (en) | 2019-05-06 | 2019-05-06 | Permanent magnet mixing plant and melt preparation method suitable for melt preparation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110102220A true CN110102220A (en) | 2019-08-09 |
Family
ID=67488354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910373183.4A Pending CN110102220A (en) | 2019-05-06 | 2019-05-06 | Permanent magnet mixing plant and melt preparation method suitable for melt preparation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110102220A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110499520A (en) * | 2019-09-26 | 2019-11-26 | 中国恩菲工程技术有限公司 | Fused salt electrolysis apparatus |
| CN111346000A (en) * | 2020-02-25 | 2020-06-30 | 湖南中医药大学 | Gynaecology fumigation treatment instrument |
| CN111774543A (en) * | 2020-04-13 | 2020-10-16 | 湖南科美达电气股份有限公司 | Continuous casting metallurgy stirrer |
| CN112276025A (en) * | 2020-10-28 | 2021-01-29 | 安徽工业大学 | Device and method for inhibiting vortex formation at ladle nozzle by adding electromagnetic field |
| CN113511426A (en) * | 2021-05-18 | 2021-10-19 | 四川沃文特生物技术有限公司 | Can reduce reagent dish and cold insulation system of heat loss |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013118249A1 (en) * | 2012-02-06 | 2013-08-15 | 新日鉄マテリアルズ株式会社 | Metal or semiconductor melt refinement method, and vacuum refinement device |
| CN104162380A (en) * | 2014-08-04 | 2014-11-26 | 南昌大学 | Semi-solid alloy solution permanent magnet mixing device available for test |
| CN106813393A (en) * | 2015-11-30 | 2017-06-09 | 上海奇谋能源技术开发有限公司 | A kind of heating means of high-temperature roller and realize the high-temperature roller of the heating means |
| CN206965634U (en) * | 2017-07-10 | 2018-02-06 | 深圳市耀世光华科技有限公司 | The integrated device that a kind of Far infrared carbon fiber radiant heating is combined with magnetic agitation |
| CN210385765U (en) * | 2019-05-06 | 2020-04-24 | 上海交通大学 | Permanent magnet stirring equipment suitable for melt preparation |
-
2019
- 2019-05-06 CN CN201910373183.4A patent/CN110102220A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013118249A1 (en) * | 2012-02-06 | 2013-08-15 | 新日鉄マテリアルズ株式会社 | Metal or semiconductor melt refinement method, and vacuum refinement device |
| CN104162380A (en) * | 2014-08-04 | 2014-11-26 | 南昌大学 | Semi-solid alloy solution permanent magnet mixing device available for test |
| CN106813393A (en) * | 2015-11-30 | 2017-06-09 | 上海奇谋能源技术开发有限公司 | A kind of heating means of high-temperature roller and realize the high-temperature roller of the heating means |
| CN206965634U (en) * | 2017-07-10 | 2018-02-06 | 深圳市耀世光华科技有限公司 | The integrated device that a kind of Far infrared carbon fiber radiant heating is combined with magnetic agitation |
| CN210385765U (en) * | 2019-05-06 | 2020-04-24 | 上海交通大学 | Permanent magnet stirring equipment suitable for melt preparation |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110499520A (en) * | 2019-09-26 | 2019-11-26 | 中国恩菲工程技术有限公司 | Fused salt electrolysis apparatus |
| CN111346000A (en) * | 2020-02-25 | 2020-06-30 | 湖南中医药大学 | Gynaecology fumigation treatment instrument |
| CN111346000B (en) * | 2020-02-25 | 2021-11-12 | 湖南中医药大学 | Gynaecology fumigation treatment instrument |
| CN111774543A (en) * | 2020-04-13 | 2020-10-16 | 湖南科美达电气股份有限公司 | Continuous casting metallurgy stirrer |
| CN112276025A (en) * | 2020-10-28 | 2021-01-29 | 安徽工业大学 | Device and method for inhibiting vortex formation at ladle nozzle by adding electromagnetic field |
| CN112276025B (en) * | 2020-10-28 | 2022-03-08 | 安徽工业大学 | Device and method for inhibiting vortex formation at ladle nozzle by adding electromagnetic field |
| CN113511426A (en) * | 2021-05-18 | 2021-10-19 | 四川沃文特生物技术有限公司 | Can reduce reagent dish and cold insulation system of heat loss |
| CN113511426B (en) * | 2021-05-18 | 2024-05-28 | 四川沃文特生物技术有限公司 | Reagent disk capable of reducing heat loss and cold insulation system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110102220A (en) | Permanent magnet mixing plant and melt preparation method suitable for melt preparation | |
| CN203508950U (en) | Device for inducing molten metal to carry out rapid and mass nucleation through rotary rod | |
| AU2001264711B2 (en) | Method and apparatus for magnetically stirring a thixotropic metal slurry | |
| CN102909322B (en) | Continuous production device for semisolid slurry | |
| CN102528002A (en) | Process and device for high-temperature alloy fine-grain casting with composite electromagnetic fields | |
| CN109396400B (en) | Large complex thin-wall fine-grain casting integrated forming method and device | |
| CN108480580B (en) | A kind of induction coil cooperates with DC to prepare the device of aluminium alloy cast ingot with permanent magnetic stirring | |
| CN207619552U (en) | A kind of directional solidification furnace center heating and central cooling device | |
| CN102343424B (en) | Horizontal continuous casting device and method for high-conductivity and high-strength copper alloy round bar | |
| CN206444547U (en) | A kind of permanent magnetism agitating apparatus for metal semi-solid slurrying | |
| CN102297592A (en) | Device for melting pieces of metal | |
| CN108067148A (en) | A kind of permanent magnetism agitating apparatus for metal semi-solid slurrying | |
| REN et al. | New study and development on electromagnetic field technology in metallurgical processes | |
| CN103008623A (en) | Method for refining crystal grains by utilizing strong magnetic field and special metal solidification casting device thereof | |
| CN203679244U (en) | Metal semisolid slurry preparation device | |
| CN209322988U (en) | A kind of solenoid type magnetic stirrer with control ring | |
| CN108436047B (en) | Resultant field prepares the device and method of big specification fine grain homogeneous aluminium alloy cast ingot | |
| US2319402A (en) | Desulphurizing apparatus | |
| CN103658608A (en) | Device and application for preparing metal semi-solid slurry | |
| CN210385765U (en) | Permanent magnet stirring equipment suitable for melt preparation | |
| CN100497679C (en) | Device for extracting high pure aluminum | |
| CN102719687B (en) | Preparation method of rare earth aluminum alloy semi-solid slurry | |
| CN202216527U (en) | Electromagnetic mixing and mechanical oscillation combined intermediate-frequency induction heating melting device | |
| CN202398799U (en) | Casting device applying composite electromagnetic field for high temperature alloy fine grains | |
| CN1208152C (en) | High-smelting point thixotropic metal bland and composite material intermittent preparing process and apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |