CN213376347U - Bidirectional permanent magnet stirring device for preparing alloy semi-solid slurry - Google Patents
Bidirectional permanent magnet stirring device for preparing alloy semi-solid slurry Download PDFInfo
- Publication number
- CN213376347U CN213376347U CN202022258138.5U CN202022258138U CN213376347U CN 213376347 U CN213376347 U CN 213376347U CN 202022258138 U CN202022258138 U CN 202022258138U CN 213376347 U CN213376347 U CN 213376347U
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- alloy semi
- solid slurry
- stirring device
- magnet rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model provides a two-way permanent magnetism agitating unit for preparation of alloy semi-solid slurry, including the frame, the fixed ascending crucible of opening that is provided with in top of frame, the crucible includes the teeter chamber of two levels parallel connection, and the juncture of two teeter chambers is the mouth that crosses of two teeter chambers of intercommunication, and the below of teeter chamber all is provided with permanent magnet rotor, is provided with on the permanent magnet rotor to be a set of N utmost point permanent magnet and a set of S utmost point permanent magnet that the cross was arranged, and the permanent magnet rotor transmission is connected with drive permanent magnet rotor pivoted drive arrangement. The utility model discloses can realize the non-contact stirring, can make the inside and outside temperature of thick liquids more even during the stirring to can make comparatively thick dendrite fracture in the thick liquids drop and form less graininess or rosette.
Description
Technical Field
The utility model relates to an alloy semi-solid state thick liquids preparation facilities field, in particular to a two-way permanent magnetism agitating unit that is used for alloy semi-solid state thick liquids preparation.
Background
The preparation of semi-solid alloy slurry is carried out by controlling cooling mode to change nucleation and growth process of alloy phase under liquidus temperature to obtain non-dendritic solid-liquid mixed slurry. Research shows that when the shearing force is small or zero, the slurry with high solid phase rate shows solid characteristics and is easy to cut and transport. The slurry with the solid phase fraction of 40-60% still has certain fluidity like pasty suspension, and can change the shape to fill the cavity under certain force, so that the product is easy to cast. Compared with the die casting of molten metal (complete liquid state), the semi-solid forming technology has a plurality of advantages, (1) the die filling is carried out at a lower temperature, the service life of the die is prolonged, and the bonding of the die is reduced; (2) the possibility of turbulence generation in the die-casting process is low, the probability of air entrainment is low, the oxidation is less, and the porosity is low; (3) complex parts and thin-wall parts can be formed, the utilization rate of materials is improved, and the machining amount of blanks is reduced; (4) higher forming speed can improve surface smoothness, and simultaneously improve working efficiency and product performance. Therefore, the semi-solid technology has been applied to the molding of important parts in the fields of automobiles, aerospace, electrical and electronic information communication equipment and the like. Obtaining semi-solid slurry is a key step of semi-solid technology, so the preparation process of the slurry is regarded and continuously developed, and at present, more than 20 preparation processes of the semi-solid slurry are provided, such as a mechanical stirring method, an electromagnetic stirring method, an ultrasonic vibration method, a solid-liquid mixing method, a gas stirring method, a serpentine channel method, a near liquidus pouring method and the like.
With the increasing demand of people for non-ferrous metal products, the manufacturing technology of high-quality non-ferrous metal castings becomes more and more important. Electromagnetic stirring (EMS) technology is a non-contact stirring technology, can generate uniform temperature field and concentration field in metal melt, and is one of the most effective means for improving the internal quality of castings. EMS methods using three-phase Alternating Current (AC) magnetic field inductors have been known for many years, but they consume high levels of power and require intense water cooling of the inductor coils. As an alternative, Permanent Magnet Stirring (PMS) has been developed, using a pair or multiple arrays of alternating polarity neodymium iron boron permanent magnets that, during rotation, produce a rotating magnetic field within the molten metal. Compared with an EMS method, the mobile permanent magnet system has the advantages of low power consumption, simple design, high magnetic density and the like. But because of the existence of the electromagnetic induction skin effect, the electromagnetic stirring force applied to the inside of the slurry is obviously different, and the surface layer of the slurry is subjected to a large stirring force and the inside of the slurry is small. And because the heat dissipation of thick liquids mainly spreads through the top layer, lead to the inside temperature field of thick liquids to distribute also inhomogeneous, thick liquids surface layer temperature is low and inside temperature is high. These factors result in the semi-solid slurry prepared from the semi-solid slurry with non-uniform tissue distribution, smaller granular or rosette surface, and thicker rosette or dendrite inside, and poorer slurry or blank tissue, thus limiting the further expansion of the application range of the technology and the increase of competitiveness.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems of the prior art, and aims to provide a bidirectional permanent magnet stirring device for preparing alloy semi-solid slurry, which can realize non-contact stirring, can ensure that the temperature inside and outside the slurry is more uniform during stirring, and can ensure that comparatively coarse dendritic crystals in the slurry are broken and fall off to form smaller grains or rosettes.
The technical scheme of the utility model is realized like this:
the utility model provides a two-way permanent magnetism agitating unit for preparation of alloy semi-solid slurry, includes the frame, the fixed ascending crucible of opening that is provided with in top of frame, the crucible includes the teeter chamber of two levels side by side connection, the juncture of two teeter chambers is the mouth that crosses of two teeter chambers of intercommunication, the below of teeter chamber all is provided with permanent magnet rotor, be provided with a set of N utmost point permanent magnet and a set of S utmost point permanent magnet that are the cross and arrange on the permanent magnet rotor, permanent magnet rotor transmission is connected with drive permanent magnet rotor pivoted drive arrangement.
Furthermore, at least one axial baffle blade is arranged on the inner wall of the stirring chamber.
Furthermore, the cross section of the baffle blade is arc-shaped.
Further, the stirring chamber is circular.
Furthermore, a heat insulation layer is arranged outside the side wall of the crucible.
Further, the heat preservation layer is a heat preservation cotton layer.
Furthermore, the N pole permanent magnet and the S pole permanent magnet are fixed on the permanent magnet rotor through a fixed disc, a fixed frame or a fixed rod.
Furthermore, the permanent magnet rotor is rotatably connected to the frame through a bearing.
Furthermore, the driving device is a motor, the motor is fixed on the rack, and a rotating shaft of the motor is connected with the permanent magnet rotor through a coupler.
Further, the crucible is made of ceramic or stainless steel which is not magnetic conductive.
The utility model has the advantages that:
1. when the utility model works, the N pole permanent magnet and the S pole permanent magnet rotate to generate a rotating magnetic field, and the rotating magnetic field cuts the metal melt in the crucible to generate induced current; the induced current interacts with the magnetic field to generate magnetic force, so that the metal melt is driven to rotate, and the non-contact stirring effect is achieved.
2. When the metal melt in two teeter chambers is rotatory, intersect, collide in intersection department, stir more evenly, and temperature distribution is also more even, and the impact force makes comparatively thick dendrite fracture drop form less graininess or rosette, makes the tissue obtain refining to can realize different metal melt collision effect through the turning to of controlling two motors.
3. The inner wall of the stirring chamber is provided with the baffle blade, and the baffle blade causes local impact and turbulence in the rotary motion of the metal melt, so that the metal melt is stirred more uniformly, and the temperature distribution is more uniform.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic arrangement diagram of an N-pole permanent magnet and an S-pole permanent magnet;
FIG. 3 is a transverse cross-sectional view of the crucible.
In the figure: 1. the device comprises a driving device 2, a coupler 3, a permanent magnet rotor 31, a fixed disc 32, a bearing 41, an N-pole permanent magnet 42, an S-pole permanent magnet 5, a heat insulation layer 6, a crucible 61, a stirring chamber 62, an intersection port 63, a baffle 7, a control cabinet 8 and a frame.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, a two-way permanent magnet stirring device for preparing alloy semi-solid slurry, including frame 8, the fixed ascending crucible 6 of opening that is provided with in top of frame 8, crucible 6 includes two level parallel connection' S teeter chamber 61, the juncture of two teeter chambers 61 is the mouth 62 that intersects of two teeter chambers 61, the below of teeter chamber 61 all is provided with permanent magnet rotor 3, be provided with a set of N utmost point permanent magnet 41 and a set of S utmost point permanent magnet 42 that are the cross and arrange on the permanent magnet rotor 3, permanent magnet rotor 3 transmission is connected with drive permanent magnet rotor 3 pivoted drive arrangement 1.
Further, at least one axial baffle 63 is arranged on the inner wall of the stirring chamber 61.
Further, the cross section of the baffle 63 is arc-shaped.
Further, the stirring chamber 61 is circular.
Further, an insulating layer 5 is arranged outside the side wall of the crucible 6.
Further, the heat-insulating layer 5 is a heat-insulating cotton layer.
Further, the N-pole permanent magnet 41 and the S-pole permanent magnet 42 are fixed to the permanent magnet rotor 3 through a fixed disk 31, a fixed mount, or a fixed rod.
Further, the permanent magnet rotor 3 is rotatably connected to the frame 8 through a bearing 32.
Further, the driving device 1 is a motor, the motor is fixed on the rack 8, and a rotating shaft of the motor is connected with the permanent magnet rotor 3 through a coupler 2. The motor is connected with the control cabinet 7 through an electric wire.
Further, the crucible 6 is made of ceramic or stainless steel with non-magnetic conductivity.
When the utility model is used, the metal melt is poured into the crucible 6, and the temperature of the melt is monitored in real time by the thermocouple; when the temperature of the melt is reduced to the target stirring temperature, the motors are started, the two motors rotate in the same direction or in opposite directions, and the permanent magnet rotor 3 is driven to rotate through the coupler 2; the permanent magnets with the N pole and the S pole above the permanent magnet rotor 3 generate a rotating magnetic field, and the rotating magnetic field cuts the metal melt in the crucible 6 to generate induced current; the induced current interacts with the magnetic field to generate magnetic force, so that the metal melt is driven to rotate, and the non-contact stirring effect is achieved.
During the stirring process, due to the unique shape of the crucible 6, the metal melt generates two rotational movements in two regions in the stirring chambers 61 under the electromagnetic induction action of the two sets of rotating permanent magnet arrays with the N pole and the S pole. If the two motors are in the same direction of rotation, the motion law of the metal melt in the crucible 6 is as shown in fig. 3, two strands of metal melts are converged and collided at a convergence port of a stirring chamber in the middle of the crucible 6, the stirring is more uniform, the temperature distribution is more uniform, the impact force of the collision enables the coarse dendritic crystal to be broken and fall off to form smaller grains or rosettes, the structure is refined, and different metal melt collision effects can be realized by controlling the direction of rotation of the two motors.
As shown in fig. 3, the inner wall of the stirring chamber 61 is provided with a baffle 63, and the baffle 63 causes local impact and turbulence in the rotating motion of the molten metal, so that the stirring of the molten metal is more uniform and the temperature distribution is more uniform.
The crucible 6 is made of ceramic material or non-magnetic stainless steel material, which does not react with the melt, is non-magnetic and has long service life.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A two-way permanent magnetism agitating unit for alloy semi-solid state thick liquids preparation which characterized in that: including the frame, the fixed ascending crucible of opening that is provided with in top of frame, the crucible includes two levels and connects side by side' S teeter chambers, and the juncture of two teeter chambers is the mouth that intersects of two teeter chambers of intercommunication, and the below of teeter chamber all is provided with permanent magnet rotor, is provided with a set of N utmost point permanent magnet and a set of S utmost point permanent magnet that is the cross and arranges on the permanent magnet rotor, and permanent magnet rotor transmission is connected with drive permanent magnet rotor pivoted drive arrangement.
2. The bidirectional permanent magnet stirring device for alloy semi-solid slurry preparation according to claim 1, wherein: at least one axial baffle blade is arranged on the inner wall of the stirring chamber.
3. The bidirectional permanent magnet stirring device for alloy semi-solid slurry preparation according to claim 2, wherein: the cross section of the baffle blade is arc-shaped.
4. The bidirectional permanent magnet stirring device for alloy semi-solid slurry preparation according to claim 1, wherein: the stirring chamber is circular.
5. The bi-directional permanent magnet stirring device for alloy semi-solid slurry preparation according to any one of claims 1 to 4, wherein: and a heat insulation layer is arranged outside the side wall of the crucible.
6. The bidirectional permanent magnet stirring device for alloy semi-solid slurry preparation according to claim 5, wherein: the heat preservation layer is a heat preservation cotton layer.
7. The bidirectional permanent magnet stirring device for alloy semi-solid slurry preparation according to claim 1, wherein: the N pole permanent magnet and the S pole permanent magnet are fixed on the permanent magnet rotor through a fixed disc, a fixed frame or a fixed rod.
8. The bidirectional permanent magnet stirring device for alloy semi-solid slurry preparation according to claim 1, wherein: the permanent magnet rotor is rotatably connected to the rack through a bearing.
9. The bidirectional permanent magnet stirring device for alloy semi-solid slurry preparation according to claim 1, wherein: the driving device is a motor, the motor is fixed on the rack, and a rotating shaft of the motor is connected with the permanent magnet rotor through a coupler.
10. The bidirectional permanent magnet stirring device for alloy semi-solid slurry preparation according to claim 1, wherein: the crucible is made of ceramic or stainless steel with non-magnetic conductivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022258138.5U CN213376347U (en) | 2020-10-12 | 2020-10-12 | Bidirectional permanent magnet stirring device for preparing alloy semi-solid slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022258138.5U CN213376347U (en) | 2020-10-12 | 2020-10-12 | Bidirectional permanent magnet stirring device for preparing alloy semi-solid slurry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213376347U true CN213376347U (en) | 2021-06-08 |
Family
ID=76187241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022258138.5U Active CN213376347U (en) | 2020-10-12 | 2020-10-12 | Bidirectional permanent magnet stirring device for preparing alloy semi-solid slurry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213376347U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115245775A (en) * | 2022-08-12 | 2022-10-28 | 广州邦海能源科技有限公司 | Lithium cell electricity core thick liquids collision formula mixing system |
-
2020
- 2020-10-12 CN CN202022258138.5U patent/CN213376347U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115245775A (en) * | 2022-08-12 | 2022-10-28 | 广州邦海能源科技有限公司 | Lithium cell electricity core thick liquids collision formula mixing system |
| CN115245775B (en) * | 2022-08-12 | 2023-08-25 | 安徽亿丛新能源有限公司 | Collision type stirring system for lithium battery core slurry |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103600045B (en) | The metal continuous cast technique that electromagnetic exciting composite machine stirs and device for casting of metal | |
| CN102990027B (en) | Low-energy-consumption electromagnetic stirring method for continuous casting and metal continuous casting device | |
| CN101787454B (en) | Method for preparing multicomponent reinforced aluminum-base composite material | |
| US20060038328A1 (en) | Method and apparatus for magnetically stirring a thixotropic metal slurry | |
| JPS589752A (en) | Method and device for manufacturing semi-solid slurry, efficiency thereof is improved | |
| CN203639530U (en) | Composite electroslag casting device for optimizing metal solidification structure by using steady-state magnetic field | |
| CN102133629A (en) | Light-alloy electromagnetic suspension casting device and method | |
| CN1156350C (en) | Process and equipment for preparing semi-solid-state metal slurry in spherical primary crystal or raw material for conticasting | |
| CN107214322B (en) | Magnetostatic field composite rotating magnetic field homogenizes the method and device thereof of large-scale casting ingot solidified structure | |
| CN103331435A (en) | Method for controlling metal solidification phase texture in combined mode through external rotating magnetic field and current and fusion casting device of method | |
| CN213376347U (en) | Bidirectional permanent magnet stirring device for preparing alloy semi-solid slurry | |
| CN108213384A (en) | A kind of electromagnetic stirring equipment for semisolid pressure casting | |
| CN112139472A (en) | Device and method for rapidly preparing semi-solid metal slurry | |
| CN207857807U (en) | A kind of continuous casting electromagnetic stirrer | |
| CN104846219A (en) | Preparation device and preparation method of metal semi-solid billets | |
| CN111001778A (en) | Method for efficiently preparing large-volume semi-solid slurry by composite process | |
| CN206444547U (en) | A kind of permanent magnetism agitating apparatus for metal semi-solid slurrying | |
| KR20210091272A (en) | Equipment for the production of semi-solid slurry | |
| CN201744635U (en) | Hydraulically-driven permanent magnetic blender for continuous casting machine | |
| CN215063652U (en) | Device for preparing aluminum alloy semi-solid slurry by bidirectional permanent magnet stirring | |
| CN1208152C (en) | High-smelting point thixotropic metal bland and composite material intermittent preparing process and apparatus | |
| CN2395829Y (en) | Electromagnetic exciting centrifugal casting device | |
| CN210908017U (en) | Electromagnetic multi-cyclone stirring casting device | |
| Kolesnichenko et al. | Improvement of in-mold electromagnetic stirrer by feeding of magnetic system with polyharmonic current | |
| CN114850418A (en) | Semi-solid slurry preparation process and device capable of realizing multilayer stirring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |