SLURRYING DEVICE FOR SEMI-SOLID SLURRY

Abstract

A slurrying device includes a slurrying tank and a rotor stirrer. The rotor stirrer includes a stirring drum, a transmission gear arranged at an end face of the stirring drum configured to face the slurrying tank, and a rotor stirring rod configured to extend from the stirring drum and into the slurrying tank to stir a slurrying liquid in the slurrying tank. The rotor stirring rod is meshed with the transmission gear and configured to revolve along a planar trajectory of the transmission gear while simultaneously rotating. The rotor stirrer further includes a driving device provided at the stirring drum and configured to drive the rotor stirring rod to rotate via the transmission gear.

Claims

1. A slurrying device comprising: a slurrying tank; and a rotor stirrer including: a stirring drum; a transmission gear arranged at an end face of the stirring drum configured to face the slurrying tank; a rotor stirring rod configured to extend from the stirring drum and into the slurrying tank to stir a slurrying liquid in the slurrying tank, the rotor stirring rod being meshed with the transmission gear and configured to revolve along a planar trajectory of the transmission gear while simultaneously rotating; and a driving device provided at the stirring drum and configured to drive the rotor stirring rod to rotate via the transmission gear.

2. The slurrying device according to claim 1, wherein: the transmission gear includes a plurality of transmission teeth; the rotor stirring rod includes a plurality of meshing teeth configured to mesh with the transmission teeth; a meshing tooth gap between neighboring ones of the meshing teeth approximately equals a transmission tooth width of each of the transmission teeth; and a meshing tooth width of each of the meshing teeth approximately equals a transmission tooth gap between neighboring ones of the transmission teeth

3. The slurrying device according to claim 2, wherein: the plurality of transmission teeth include 500 to 2000 transmission teeth; the plurality of meshing teeth include 10 to 20 meshing teeth; the transmission tooth gap is 2 to 4 cm; and the transmission tooth width is 3 to 5 cm.

4. The slurrying device according to claim 1, wherein the rotor stirring rod is configured to extend into the slurrying tank by ½ to ⅔ of a height of the slurrying tank.

5. The slurrying device according to claim 1, wherein the rotor stirring rod is configured to rotate at 1000 to 2000 rounds/min, and to revolve along the planar trajectory of the transmission gear at 100 to 200 revolutions/min.

6. The slurrying device according to claim 1, wherein the rotor stirring rod has a hollow structure, a diameter of an outer wall of the rotor stirring rod is 50 to 70 mm, and a diameter of an inner wall of the rotor stirring rod is 30 to 50 mm.

7. The slurrying device according to claim 6, wherein the rotor stirrer further includes a copper tube extending through the stirring drum and arranged in an inner cavity of the rotor stirring rod, the copper tube has a cut-through hollow structure and is configured to feed compressed argon into the rotor stirring rod, and an outer diameter of the copper tube is smaller than the diameter of the inner wall of the rotor stirring rod.

8. The slurrying device according to claim 7, wherein the outer diameter of the copper tube is 10 to 20 mm and an inner diameter of the copper tube is 1.5 to 5 mm,

9. The slurrying device according to claim 1, wherein: the rotor stirring rods is one of at least three rotor stirring rods of the rotor stirrer that are configured to extend from the stirring drum into the slurrying tank; the transmission gear is one of at least three transmission gears of the rotor stirrer are arranged at the end face of the stirring drum; the at least three rotor stirring rods are in one-to-one correspondence to the at least three transmission gears and each meshed with a corresponding transmission gear of the at least three transmission gears; each of the at least three rotor stirring rods is configured to revolve along a planar trajectory of the corresponding transmission gear at 120 to 180 revolutions/min while simultaneously rotating at 1200 to 2000 rounds/min.

10. The slurrying device according to claim 1, further comprising: a permanent magnet arranged in the slurrying tank and configured to generate a magnetic field force to propel the slurrying liquid in the slurrying tank.

11. The slurrying device according to claim 1, wherein the slurrying liquid includes at least one of metal melt, alloy melt, or composite material melt containing more than 40% of metal or alloy.

12. The slurrying device according to claim 1, wherein the rotor stirring rod is configured to stir the slurrying liquid in the slurrying tank to prepare a semi-solid slurry having a grain size of 30 to 50 μm and a grain roundness of 0.80 to 0.95.

13. The slurrying device according to claim 1, wherein: the slurrying tank has a volume that is capable of preparing 20 to 80 kg of semi-solid slurry; and a difference among temperatures of the semi-solid slurry at different locations in the slurrying tank is below 3° C.

14. The slurrying device according to claim 1, wherein the rotor stirrer further includes: a transmission rod, the transmission gear being connected to a bottom end of the transmission rod; a power device in transmission connection to a top end of the transmission rod to drive the transmission rod to drive the rotor stirring rod to revolve along the planar trajectory of the transmission gear; and a stirring rail arranged at a bottom of the stirring drum, a middle portion of the transmission rod being in transmission connection to the stirring rail.

15. The slurrying device according to claim 14, wherein the stirring rail includes a transmission rail and a sliding rail, and the transmission rod is in transmission connection to the transmission rail and in sliding connection to the sliding rail.

16. The slurrying device according to claim 15, wherein the transmission rail has an internally-toothed ring structure.

17. The slurrying device according to claim 15, wherein the rotor stirrer further includes a driving wheel provided at the middle portion of the transmission rod, and the driving wheel is meshed with and in transmission connection to the transmission rail.

18. The slurrying device according to claim 15, wherein the rotor stirrer further includes a lug provided at the middle portion of the transmission rod, and the lug is in sliding connection to the sliding rail.

19. The slurrying device according to claim 14, wherein: the rotor stirrer further includes a transmission frame fixedly connected to the bottom end of the transmission rod; and the rotor stirring rod is rotatably connected to the transmission frame.

20. A rotor stirrer comprising: a stirring drum; a transmission gear arranged at an end face of the stirring drum; a rotor stirring rod configured to extend from the stirring drum, the rotor stirring rod being meshed with the transmission gear and configured to revolve along a planar trajectory of the transmission gear while simultaneously rotating; and a driving device provided at the stirring drum and configured to drive the rotor stirring rod to rotate via the transmission gear.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings that constitute a part of the present disclosure are used for providing further understanding of the present disclosure, and the illustrative embodiments of the present disclosure and the descriptions thereof are used for explaining the present disclosure and do not constitute any improper limitations to the present disclosure, in which:

[0042] FIG. 1 is a schematic view of an example slurrying device for semi-solid slurry according to the present disclosure;

[0043] FIG. 2 is a schematic view of another example slurrying device for semi-solid slurry according to the present disclosure;

[0044] FIG. 3 schematically shows a movement trajectory of a rotor stirring rod of a rotor stirrer of a slurrying device for semi-solid slurry according to the present disclosure;

[0045] FIG. 4 schematically shows another movement trajectory of rotor stirring rods of another slurrying device according to the present disclosure;

[0046] FIG. 5 is a schematic structural diagram of a rotor stirrer of a slurrying device according to the present disclosure; and

[0047] FIG. 6 is a schematic structural diagram of a rotor stirrer of another slurrying device according to the present disclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0048] To make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the present disclosure will be described below with embodiments of the present disclosure. Apparently, the embodiments described herein are some but not all of embodiments of the present disclosure. All other embodiments obtained on the basis of the embodiments of the present disclosure by a person of ordinary skill without paying any creative effort shall fall in the scope of the present disclosure. It is to be noted that the embodiments in the present application and the features in the embodiments can be combined with each other if there is no conflict.

[0049] The slurrying device for semi-solid slurry provided by the present disclosure will be described below in detailed with specific embodiments.

[0050] FIG. 1 is a schematic structural diagram of an example of the slurrying device according to the present disclosure, and FIG. 2 is a schematic structural diagram of another example of the slurrying device according to the present disclosure. As shown in FIGS. 1 and 2, the slurrying device for semi-solid slurry provided by the present disclosure includes a rotor stirrer 1 and a slurrying tank 2. The rotor stirrer 1 includes a stirring drum 9 and at least one rotor stirring rod 4 extending from the stirring drum 9 into the slurrying tank 2. Driving device for driving at least one rotor stirring rod 4 to rotate is provided at the stirring drum 9. A transmission gear 6 is provided on an end face of the stirring drum 9 facing the slurrying tank 2. The at least one rotor stirring rod 4 is meshed with the transmission gear 6, and the at least one rotor stirring rod 4 revolves along a planar trajectory of the transmission gear 6 during its rotation. In this disclosure, rotation or rotating of an object (e.g., a rotor stirring rod) refers to the circular motion of the object around its own axis, e.g., an axis passing through the center of mass of the object or an axis passing through a point near the center of mass of the object, while revolution or revolving of an object (e.g., a rotor stirring rod) refers to the circular motion of the object around another object (e.g., the transmission gear).

[0051] In the embodiment shown in FIG. 1, the rotor stirrer 1 is provided with one rotor stirring rod; while in the embodiment shown in FIG. 2, the rotor stirrer 2 is provided with three rotor stirring rods 4. FIG. 3 shows a movement trajectory diagram of the at least one rotor stirring rod 4, for example, showing a movement trajectory of the one rotor stirring rod 4 shown in FIG. 1. FIG. 4 shows another movement trajectory diagram of the at least one rotor stirring rod 4, for example, movement trajectories of the three rotor stirring rods 4 shown in FIG. 4 moving at the same time.

[0052] The transmission gear is provided with n teeth, where n is a positive integer. The distance between a previous tooth and a neighboring next tooth is a, and the width of each tooth is b. A tooth of the transmission gear is also referred to as a “transmission tooth.” A distance between two neighboring transmission teeth is also referred to as a “transmission tooth gap,” and a width of a transmission tooth is also referred to as a “transmission tooth width.” Meshing teeth matched with the transmission gear 6, i.e., matched with the transmission teeth of the transmission gear 6, are arranged at an end of the at least rotor stirring rod 4 which is connected to the transmission gear 6, and each rotor stirring rod 4 includes m meshing teeth, where m is a positive integer. The distance between a previous meshing tooth and a neighboring next meshing tooth (also referred to as a “meshing tooth gap”) is b, and the width of each meshing tooth (also referred to as a “meshing tooth width”) is a. That is, the transmission tooth gap approximately equals the meshing tooth width, and the transmission tooth width approximately equals the meshing tooth gap. The rotation and revolution of the at least one rotor stirring rod 4 are simultaneously performed to stir slurrying liquid 3 in the slurrying tank 2 to obtain semi-solid slurry. The grain size of the prepared semi-solid slurry is 30 to 50 μm, and the grain roundness of the semi-solid slurry is 0.80 to 0.95.

[0053] The n is 500 to 2000, in some embodiments 1000 to 1600. For example, in practical operations, it is possible that n=1000, n=1200, n=1400, n=1500 or n=1600.

[0054] The m is 10 to 20, in some embodiments 12 to 18. For example, in practical operations, it is possible that m=12, m=13, m=15, m=17 or m=18.

[0055] The a is 2 to 4 cm. For example, in practical operations, it is possible that a=2 cm, a=2.5 cm, a=3 cm, a=3.3 cm, a=3.8 cm or a=4 cm.

[0056] The b is 3 to 5 cm. For example, in practical operations, it is possible that b=3 cm, b=3.5 cm, b=4 cm, b=4.3 cm, b=4.8 cm or b=5 cm.

[0057] Under the conditions, the meshing teeth of the rotor stirring rod 4 are meshed with the teeth of the transmission gear 6 to revolve along the trajectory of the transmission gear 6. During an alloy slurrying process, the rotor stirring rod 4 may be easily damaged by corrosion. Since the rotor stirring rod 4 is meshed with the transmission gear 6, it is easy to disassemble and assemble, and it is convenient for the replacement and maintenance of the rotor stirring rod 4. As a result, the service of the whole device can be prolonged by replacing the rotor stirring rod 4, and the mounting accuracy of the rotor stirring rod 4 and the transmission gear 6 is improved. Accordingly, the rotor stirring rod 4 is allowed to revolve along the trajectory of the transmission gear 6, and the centrifugal force generated during revolution acts on the slurrying liquid 3 in the slurrying tank 2, so that the solidification process of the slurrying liquid 3 is broken and the time required by the slurrying liquid 3 to form the semi-solid slurry is reduced.

[0058] In some embodiments, the rotor stirrer 1 includes at least three rotor stirring rods 4 extending from the stirring drum 9 into the slurrying tank 2 (as shown in FIG. 2). At least three transmission gears 6 are provided on an end face of the stirring drum 9 facing the slurrying tank 2. The at least three rotor stirring rods 4 are in one-to-one correspondence to the at least three transmission gears 6 and meshed with the at least three transmission gears 6. Each rotor stirring rod 4 revolves along a planar trajectory of the respective transmission gear 6 during its rotation. The rotation of revolution of each of the at least three rotor stirring rods 4 are simultaneously performed to stir slurrying liquid 3 in the slurrying tank 2 to obtain semi-solid slurry. The grain size of the prepared semi-solid slurry is 35 to 50 and the grain roundness of the semi-solid slurry being 0.85 to 0.95. Under the conditions, the rotor stirring rods 4 can stir more than 95% of the slurrying liquid 3 in the slurrying tank 2 during its rotation, so that the slurrying liquid 3 is moved more fully. As a result, the prepared semi-solid slurry is smaller in size and higher in grain roundness, and the slurrying time can be further shortened.

[0059] FIG. 5 is a structural diagram of an example of the rotor stirrer 1 in the technical solution of the present disclosure, and FIG. 6 is a structural diagram of another example of the rotor stirrer 1. In the embodiment shown in FIG. 5, there is one rotor stirring rod 4; while in the embodiment shown in FIG. 6, there are three rotor stirring rods 4. As shown in FIGS. 5 and 6, the rotor stirrer 1 includes a stirring drum 9, a transmission gear 6, a driving device 7 and at least one rotor stirring rod 4. The at least one rotor stirring rod 4 is connected to the stirring drum 9 and located in the slurrying tank 2 to stir slurrying liquid in the slurrying tank 2. As shown, the at least one rotor stirring rod 4 is meshed with the transmission gear 6. The transmission gear 6 is located on the bottom of the stirring drum 9. The driving device 7 drives the at least one rotor stirring rod 4 to rotate. The at least one rotor stirring rod 4 revolves along a planar trajectory of the transmission gear 6 during its rotation.

[0060] In this embodiment, the rotor stirrer 1 further includes a transmission rod 11 and a power device 12, and a stirring rail 91 is arranged on the bottom of the stirring drum 9. A middle portion of the transmission rod 11 is in transmission connection to the stirring rail 91, the transmission gear 6 is rotatably connected to a bottom end of the transmission rod 11, and the power device 12 is in transmission connection to a top end of the transmission rod 11. The power device 12 drives the transmission rod 11 to move along the stirring rail 91, i.e., driving the transmission gear 6 to move along the stirring rail 91. That is, the movement trajectory of the transmission gear 6 is the movement trajectory of the transmission rod 11 along the stirring rail 91. The rotor stirring rod 4 is meshed with the transmission gear 6, so that the power device 12 drives the transmission rod 11 to drive the at least one rotor stirring rod 4 to revolve along the planar trajectory of the transmission gear 6. That is, the driving device 7 drives the rotor stirring rod 4 to rotate, and the power device 12 drives the rotor stirring rod 4 to revolve by means of the transmission rod 11 and the transmission gear 6. Thus, the rotation and revolution of the rotor stirring rod 4 in the slurrying liquid 3 are simultaneously performed to fully stir the slurrying liquid 3, the uniformity of slurrying is ensured, and it is advantageous to quickly reduce the temperature of the semi-solid slurry and improve the slurrying efficiency.

[0061] To ensure the stability of movement of the transmission rod 11 along the stirring rail 91, in this embodiment, the stirring rail 91 includes a transmission rail 911 and a sliding rail 912, and the transmission rod 11 is in transmission connection to the transmission rail 911 and in sliding connection to the sliding rail 912. In some embodiments, the transmission rail 911 may be an internally-toothed ring structure. Correspondingly, a driving wheel 111 is provided at the middle portion of the transmission rod 11, and the driving wheel 111 is meshed with and in transmission connection to the transmission rail 911. Further, a lug 112 is provided at the middle portion of the transmission rod 11, and the lug 112 is in sliding connection to the sliding rail 912.

[0062] In the embodiments shown in FIGS. 5 and 6, the orientation of the sliding rail 912 is parallel to the axial direction (longitudinal direction) of the transmission rod 11. In other embodiments, the orientation of the sliding rail 912 may also be perpendicular to the axial direction of the transmission rod 11 or be arranged at a preset included angle with the axial direction of the transmission rod 11.

[0063] Specifically, the trajectory of the sliding rail 912 is adapted to the trajectory of the transmission rail 911 in shape, and the central axis of the sliding rail 912 and the central axis of the transmission rail 911 overlap.

[0064] In a specific embodiment, if the transmission rail 911 is of an annular internally-toothed ring structure, the sliding rail 912 is of an annular rail structure that is coaxial with the transmission rail 911. Correspondingly, the lug 112 is of an arc-shaped or sector-shaped structure, to ensure the smoothness of sliding of the lug 112 in the sliding rail 912. Further, in this structure, the radius of the arc-shaped or sector-shaped structure of the lug 112 is matched with the radius of the sliding rail 912. For example, the inner diameter of the lug 112 is greater than or equal to that of the sliding rail 912, and the outer diameter of the lug 112 is less than or equal to that of the sliding rail 912.

[0065] During operation, to ensure the meshed connection between the rotor stirring rod 4 and the transmission gear 6, the rotor stirrer 1 further includes a transmission frame 13, the transmission frame 13 is fixedly connected to the bottom end of the transmission rod 11, and the at least one rotor stirring rod 4 is rotatably connected to the transmission frame 13. The driving device 7 drives the rotor stirring rod 4 to rotate. The power device 12 drives the rotor stirring rod 4 to revolve by means of the transmission frame 13 by driving the transmission rod 11 to move along the transmission rail 911. When there are two or more rotor stirring rods 4, for example, in the embodiment shown in FIG. 6, the driving device 7 drives one rotor stirring rod 4 to rotate, and other rotor stirring rods 4 can be driven to synchronously rotate by the transmission gear 6 by means of the meshed connection between the rotor stirring rods 4 and the transmission gear 6. Thus, the rotation of each rotor stirring rod 4 and the revolution of each rotor stirring rod 4 along the transmission rail 911 under the drive of the power device 12 are realized, and the slurrying liquid 3 is fully stirred to form slurry.

[0066] The depth of the rotor stirring rod 4 extending into the slurrying tank 2 is ½ to ⅔ of the height of the slurrying tank 2. In some embodiments, the depth of the rotor stirring rod 4 extending into the slurrying tank 2 is 7/12 to ⅔ of the height of the slurrying tank 2. Under this condition, the rotor stirring rod 4 can rotate the slurrying liquid 3 to the largest extent, thereby avoiding that the stirring efficiency of the semi-solid slurry is influenced by solidification since the rotor stirring rod 4 is not long enough to fully stir the slurrying liquid 3 on the bottom of the slurrying tank 2, and also avoiding that the quality of the prepared semi-solid slurry is influenced since the rotor stirring rod 4 is so long that the slurrying liquid 3 is excessively stirred during the stirring process so as to make air or other impurities enter into the slurrying liquid 3. For example, in practical applications, the depth of the rotor stirring rod 4 extending into the slurrying tank 2 is 7/12 or ⅔ of the height of the slurrying tank 2.

[0067] The speed of rotation of the rotor stirring rod 4 is 1000 to 2000 rounds/min. In some embodiments, the speed of rotation of the rotor stirring rod 4 is 1200 to 2000 rounds/min. Under this condition, the grain nucleation of the prepared semi-solid slurry is more uniform. The solid-phase crystal grains in the semi-solid slurry account for 50% to 70%, so the semi-solid slurry is high-quality semi-solid slurry containing fine and uniform solid-phase particles. For example, in practical operations, it is possible that the speed of rotation of the rotor stirring rod 4 is 1200 rounds/min, 1400 rounds/min, 1600 rounds/min, 1800 rounds/min or 2000 rounds/min.

[0068] The speed of revolution of the rotor stirring rod 4 along the planar trajectory of the transmission gear 6 is 100 to 200 revolutions/min. In some embodiments, the speed of revolution of the rotor stirring rod 4 along the planar trajectory of the transmission gear 6 is 120 to 180 revolutions/min. Under this condition, the rotor stirring rod 4 can generate a stirring force at any location in the slurrying tank 2 to break the process of the slurrying liquid 3 crystallizing and growing inward to form primary dendritic crystals, so that non-uniform slurrying caused by the crystallization of the slurrying liquid 3 on the wall of the slurrying tank 2 is avoided.

[0069] The rotor stirring rod 4 is of a hollow structure. The diameter of an outer wall of the rotor stirring rod 4 is 50 to 70 mm, and the diameter of an inner wall of the rotor stirring rod 4 is 30 to 50 mm. In some embodiments, the diameter of the outer wall of the rotor stirring rod 4 is 60 to 70 mm, and the diameter of the inner wall of the rotor stirring rod 4 is 30 to 40 mm. Under this condition, the contact area between the rotor stirring rod 4 and the slurrying liquid 3 is larger, the stirring time is less, and the process cycle is reduced. For example, in practical operations, it is possible that the diameter of the outer wall of the rotor stirring rod 4 is 60 mm and the diameter of the inner wall of the rotor stirring rod 4 is 30 mm; or, the diameter of the outer wall of the rotor stirring rod 4 is 65 mm and the diameter of the inner wall of the rotor stirring rod 4 is 35 mm; or, the diameter of the outer wall of the rotor stirring rod 4 is 70 mm and the diameter of the inner wall of the rotor stirring rod 4 is 40 mm.

[0070] In some embodiments, the rotor stirring rod 4 is made of graphite. Under this condition, the high-temperature corrosion of the rotor stirring rod 4 by the slurrying liquid 3 is avoided as much as possible, so that the service life of the rotor stirring rod 4 is prolonged, the utilization of the device is improved and the pollution of the slurrying liquid 3 caused by the corrosion of the rotor stirring rod 4 is avoided.

[0071] A copper tube 5 extending through the stirring drum 9 and into the stirring tank is arranged in an inner cavity of the rotor stirring rod 4. The copper rube 5 is of a cut-through hollow structure. As shown in FIGS. 1 and 2, the outer diameter of the copper tube 5 is less than the inner diameter of the rotor stirring rod 4. In some embodiments, the copper tube 5 has an outer diameter of 10 to 20 mm and an inner diameter of 1.5 to 5 mm. The copper tube 5 is used for feeding compressed argon into the rotor stirring rod 4, to conduct heat of the rotor stirring rod 4 and further quickly reduce the temperature of the semi-solid slurry (i.e., the slurrying liquid 3).

[0072] In some embodiments, the copper tube 5 has an outer diameter of 15 to 20 mm and an inner diameter of 3 to 5 mm. For example, in practical operations, it is possible that the copper tube 5 has an outer diameter of 15 mm and an inner diameter of 3 mm, or an outer diameter of 16 mm and an inner diameter of 3.5 mm, or an outer diameter of 17 mm and an inner diameter of 4 mm, or an outer diameter of 18 mm and an inner diameter of 4.5 mm, or an outer diameter of 20 mm and an inner diameter of 5 mm.

[0073] The slurrying liquid 3 is metal melt, alloy melt or composite material melt containing more than 40% of metal or alloy, which is heated to melt. In some embodiments, the slurrying liquid 3 is one or more of aluminum alloy liquid, magnesium alloy liquid, copper alloy liquid and titanium alloy liquid. Under this condition, the prepared semi-solid slurry is high in die-casting formation ratio, and the obtained die cast is lighter in mass and smaller in thickness and has excellent mechanical properties (such as strength and tensile strength) and excellent electrical conductivity and thermal conductivity.

[0074] 20 to 80 kg of semi-solid slurry can be prepared in the slurrying tank 2, and the difference among temperatures of the semi-solid slurry at different locations in the slurrying tank 2 is below 3° C. In some embodiments, 20 to 60 kg of semi-solid slurry is prepared in the slurrying tank 2. Under this condition, the difference among temperatures of the prepared semi-solid slurry at different locations in the slurrying tank 2 is below 1.5° C. For example, in practical operations, it is possible that 20, 30, 40, 50 or 60 kg of semi-solid slurry can be prepared.

[0075] A permanent magnet is arranged in the slurrying tank 2, and a magnetic field force generated by the permanent magnet propels the slurrying liquid 3 in the slurrying tank 2 to be electromagnetically stirred.

[0076] It is to be noted that, as used herein, the term “comprise,” “include” or any other variant thereof is intended to cover any non-exclusive inclusion, so that an article or device including a series of elements not only includes these elements, but also includes other elements that are not expressly listed, or elements inherent to this article or device. Without further restrictions, an element defined by the statement “comprising . . . ” does not exclude the presence of other identical elements in the article or device including this element.

[0077] The foregoing embodiments are merely for describing the technical solutions of the present disclosure rather than limiting, and the present disclosure merely has been described above in detail with embodiments. It should be understood by a person of ordinary skill in the art that the technical solutions of the present disclosure can still be modified or equivalently replaced, and these modifications or replacements made without departing from the spirit and scope of the technical solutions of the present disclosure shall fall into the scope of the present disclosure.

INDUSTRIAL APPLICABILITY

[0078] In the slurrying device for semi-solid slurry provided by the present disclosure, the fine grain structure can be obtained without adding any grain refiner, so the generation of columnar crystals and coarse dendritic crystals during the conventional casting process is eliminated, the forming temperature is low, the cost for production and operation is reduced, and the energy source is saved.

[0079] After formation, the industrial casts made of the semi-solid slurry prepared by the slurrying device for semi-solid slurry in the present disclosure are high in size precision, small in machining allowance and high in mode-filling capacity.

[0080] In the slurrying device for semi-solid slurry provided by the present disclosure, a permanent magnet is further arranged in the slurrying tank to generate an electromagnetic force for propelling the movement of the slurrying liquid in the slurrying tank to realize electromagnetic stirring, so that the slurrying liquid is stirred more completely and uniformly, the slurrying time is shortened, and the problems on the solidification of the slurrying liquid on the slurrying tank are further reduced.

[0081] In the slurrying device for semi-solid slurry provided by the present disclosure, by combining the mechanical stirring with the electromagnetic stirring, a new idea for stirring and forming the semi-solid slurry is provided, and unexpected effects are achieved. The grain roundness of the prepared semi-solid slurry is up to 88% to 96%, and the distribution of fine crystal grains is more uniform, and the difference among temperatures of the semi-solid slurry at different locations in the slurrying tank is below 1.5° C.