Aluminum alloy grain refining device based on pulsed magnetic field

Abstract

The utility model provides an aluminum alloy grain refining device based on a pulsed magnetic field, and belongs to the technical field of electromagnetic metallurgy. Comprising a flow groove, the opposite sides of the flow groove are provided with containing shells, a plurality of heating coils and a plurality of pulse coils are arranged in the containing shells, the heating coils are located between every two adjacent pulse coils, the material mixing mechanism comprises fixed flow guide plates fixed to the opposite sides of the inner wall of the flow groove, and a movable flow guide block is arranged in the flow groove; a driving assembly is arranged at the top of the movable flow guide block and used for reciprocating swing of the movable flow guide block in the flow groove. Through the arrangement of the movable flow guide block, in the flowing process of molten aluminum in the launder, the molten aluminum is guided by the movable flow guide block to flow towards the position, close to the pulse coil, of the side face of the inner wall of the launder, the molten aluminum originally flowing in the middle of the interior of the launder can be closer to the position of the pulse coil, and therefore better grain refinement treatment is achieved; and meanwhile, the uniformity of grain refinement treatment on the molten aluminum is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic metallurgy, and particularly relates to an aluminum alloy grain refinement device based on a pulsed magnetic field. Background Art

[0002] Aluminum alloys are generally produced by semi - continuous casting technology. Coarse grain defects usually occur during the casting process. The commonly used method for refining grains in industry is to apply a pulsed magnetic field to the molten aluminum. When the molten aluminum flows in the launder, a pulsed magnetic field treatment device is installed at the launder, and the pulsed magnetic field is applied to the molten aluminum to refine the grains of the molten aluminum.

[0003] During the process of refining the grains of aluminum alloys by using a pulsed magnetic field, the coil that generates the pulsed magnetic field is usually installed on the side position of the launder. The coil is energized to generate a pulsed magnetic field to achieve the treatment of refining the grains of the molten aluminum in the launder. However, the magnetic field strength will decay with the increase of distance. The grain refinement effect of the molten aluminum near the coil is better, while the grain refinement effect of the molten aluminum in the middle of the launder needs to be improved because it is far from the coil position. Therefore, this application provides an aluminum alloy grain refinement device based on a pulsed magnetic field to meet the requirements. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide an aluminum alloy grain refinement device based on a pulsed magnetic field to solve the technical problem that the grain refinement effect of the molten aluminum in the middle of the launder needs to be improved because it is far from the coil position.

[0005] To solve the above - mentioned technical problem, the utility model provides the following technical solutions:

[0006] An aluminum alloy grain refinement device based on a pulsed magnetic field, including a launder. Accommodating shells are arranged on opposite sides of the launder. A plurality of heating coils and a plurality of pulsed coils are arranged in the accommodating shells. The heating coils are located between two adjacent pulsed coils. The device further includes:

[0007] A mixing mechanism, the mixing mechanism includes fixed guide plates fixed on opposite sides of the inner wall of the launder. A movable guide block is arranged in the launder. A driving component is arranged on the top of the movable guide block. The driving component is used for the reciprocating swing of the movable guide block in the launder.

[0008] Preferably, the driving component includes a substrate arranged on the top of the launder. A support column is fixed to the bottom of the substrate. The support column is fixed to the top of the launder. A cylinder is fixed to the top of the substrate. A movable rod is fixed to the telescopic end of the cylinder. A rotating shaft is fixed to the top of the movable guide block. The top of the rotating shaft movably penetrates through the substrate and extends above the substrate. A square bar is fixed to the top of the rotating shaft. A long strip groove is formed in the top of the square bar. A driving column is fixed to the top of the movable rod. The circumferential surface of the driving column is slidably connected to the inner wall of the long strip groove.

[0009] Preferably, a shaft seat is fixed to the top of the substrate, and the inner wall of the shaft seat is fixedly connected to the circumferential surface of the rotating shaft.

[0010] Preferably, brackets are fixed to the tops of both of the accommodating shells, a connecting rod is commonly connected between the two brackets, a guiding member is arranged at the bottom of the connecting rod, the guiding member is fixed to the top of the substrate, the guiding member is used for guiding during the movement of the accommodating shell, and the end of the movable rod away from the air cylinder is fixedly connected to the side surface of the bracket away from the air cylinder.

[0011] Preferably, flow guiding strips are fixed to the opposite sides of the movable flow guiding block, and the flow guiding strips are used for guiding the molten aluminum flowing through the driven flow guiding block to flow towards the side surface position of the inner wall of the flow groove.

[0012] Preferably, inclined flow guiding sheets are fixed to the opposite sides of the movable flow guiding block, the number of the inclined flow guiding sheets is several, the inclined flow guiding sheets are fixed to the ends of the flow guiding strips, and an inclined flow guiding channel is formed between two adjacent inclined flow guiding sheets.

[0013] Preferably, a drainage surface is arranged on the side of the inclined flow guiding sheet facing the direction of the molten aluminum, and the drainage surface is inclined.

[0014] Preferably, a flow guiding surface is arranged on the side of the movable flow guiding block facing the direction of the molten aluminum, and the flow guiding surface is arc-shaped.

[0015] Compared with the prior art, the utility model has at least the following beneficial effects:

[0016] In the above solution, through the arrangement of the movable flow guiding block, during the flow of the molten aluminum in the flow groove, after being guided by the movable flow guiding block, the molten aluminum flows towards the position close to the pulse coil on the side surface of the inner wall of the flow groove, so that the molten aluminum flowing in the middle position inside the original flow groove can be closer to the pulse coil position, thereby obtaining better grain refinement treatment, and at the same time improving the uniformity of the grain refinement treatment of the molten aluminum.

[0017] Through the arrangement of the driving assembly, the driving assembly is used to drive the movable flow guiding block to rotate reciprocally in the flow groove and drive the heating coil and the pulse coil in the accommodating shell to move reciprocally. By using the reciprocal rotation of the movable flow guiding block to realize the stirring treatment of the flowing molten aluminum, the stirring can make the molten aluminum fully mixed, so that the molten aluminum in each part of the flow groove is more evenly treated by the magnetic field, comprehensively improving the grain refinement effect. At the same time, the stirring can break up the formed crystal nuclei and make them evenly disperse in the molten aluminum, increasing the number of effective nucleation cores. More cores mean that more fine grains can be formed during solidification, making the final microstructure of the aluminum alloy finer and more uniform. After the pulse coil moves reciprocally, the pulsed magnetic field can cover a wider area in the flow groove, improving the uniformity of the grain refinement treatment of the molten aluminum again. At the same time, the molten aluminum that was originally far from the pulse coil and weakly affected by the pulsed magnetic field can also be treated by the pulsed magnetic field, greatly increasing the amount of molten aluminum receiving the grain refinement treatment.

[0018] Through the arrangement of the diversion bars, when the molten aluminum flows through the position of the diversion bars, the diversion of the molten aluminum is further achieved through the diversion bars, improving the diversion effect of the movable diversion block on the molten aluminum, thereby enhancing the grain refinement treatment effect of the pulse coil on the molten aluminum.

[0019] Through the arrangement of the inclined diversion sheets, the inclined diversion sheets are used to divert the molten aluminum flowing through the movable diversion block, causing the molten aluminum at the bottom of the inner wall of the flow channel to flow obliquely upward, so that the molten aluminum at the bottom of the inner wall of the flow channel can be better treated by the pulsed magnetic field, further improving the uniformity of the grain refinement treatment of the molten aluminum. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] This part of the drawings constituting a part of the specification shows embodiments of the present disclosure and, together with the specification, is further used to explain the principles of the present disclosure and enable those skilled in the relevant art to implement and use the present disclosure.

[0021] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 is a right sectional view at the rotating shaft of the present utility model;

[0023] Figure 3 is a three-dimensional structural schematic diagram at the fixed diversion plate of the present utility model;

[0024] Figure 4 is a three-dimensional structural schematic diagram at the movable diversion block of the present utility model.

[0025] In the figure: 1, flow channel; 2, accommodation shell; 3, heating coil; 4, pulse coil; 5, mixing mechanism; 6, fixed diversion plate; 7, movable diversion block; 8, diversion surface; 9, diversion bar; 10, inclined diversion sheet; 11, drainage surface; 12, drive assembly; 13, rotating shaft; 14, bracket; 15, cylinder; 16, square bar; 17, long strip groove; 18, movable rod; 19, drive column; 20, connecting rod; 21, substrate.

[0026] As shown in the figure, in order to clearly show the structure of the embodiments of the present utility model, specific structures and devices are marked in the figure, but this is only for schematic purposes and is not intended to limit the present utility model to this specific structure, device and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments, and the adjustments or modifications still fall within the scope of the appended claims. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will describe in detail a device for refining the grains of aluminum alloy based on pulsed magnetic field provided by the present utility model in conjunction with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present utility model.

[0028] As Figures 1-4 shown, an embodiment of the present utility model provides a device for refining the grains of aluminum alloy based on pulsed magnetic field, which includes a flow tank 1. Accommodating shells 2 are arranged on opposite sides of the flow tank 1. A plurality of heating coils 3 and a plurality of pulsed coils 4 are arranged in the accommodating shells 2. The heating coils 3 are located between two adjacent pulsed coils 4. It further includes:

[0029] A mixing mechanism 5. The mixing mechanism 5 includes fixed guide plates 6 fixed on opposite sides of the inner wall of the flow tank 1. A movable guide block 7 is arranged in the flow tank 1. The fixed guide plates 6 and the movable guide block 7 are made of silicon nitride ceramics and can withstand the temperature of the molten aluminum without deformation or damage. A driving assembly 12 is arranged on the top of the movable guide block 7. The driving assembly 12 is used for the reciprocating swing of the movable guide block 7 in the flow tank 1. After the aluminum alloy liquid flows into the flow tank 1, it is first preliminarily guided by the fixed guide plates 6 to guide the molten aluminum to the position of the movable guide block 7. The movable guide block 7 reciprocates under the drive of the driving assembly 12. On the one hand, it guides the molten aluminum, making the molten aluminum flow towards the position close to the pulsed coil 4 on the inner wall side of the flow tank 1, making the molten aluminum originally flowing in the middle position inside the flow tank 1 closer to the pulsed coil 4, creating conditions for better grain refinement treatment. On the other hand, the reciprocating swing of the movable guide block 7 can stir the molten aluminum, making the molten aluminum fully mixed, so that the molten aluminum in each part of the flow tank 1 is more evenly treated by the pulsed magnetic field generated by the pulsed coil 4, comprehensively improving the grain refinement effect. On the other hand, the stirring can break up the formed crystal nuclei, making them evenly dispersed in the molten aluminum, increasing the number of effective nucleation cores, and making the final microstructure of the aluminum alloy finer and more uniform, thereby improving the quality of the finished aluminum alloy.

[0030] As Figure 1 and Figure 2As shown in the figure, in this embodiment, the driving assembly 12 includes a substrate 21 disposed on the top of the chute 1. Support columns are fixed to the bottom of the substrate 21, and the support columns are fixed to the top of the chute 1. A cylinder 15 is fixed to the top of the substrate 21. A movable rod 18 is fixed to the telescopic end of the cylinder 15. A rotating shaft 13 is fixed to the top of the movable flow guiding block 7. The top of the rotating shaft 13 movably penetrates through the substrate 21 and extends above the substrate 21. A square bar 16 is fixed to the top of the rotating shaft 13. A long slot 17 is formed in the top of the square bar 16. A driving column 19 is fixed to the top of the movable rod 18. The circumferential surface of the driving column 19 is slidably connected to the inner wall of the long slot 17. When the cylinder 15 works, its piston rod extends and retracts to drive the movable rod 18 to reciprocate. The driving column 19 at the top of the movable rod 18 reciprocates to alternately press the opposite sides of the inner wall of the long slot 17 at the top of the square bar 16, so that the square bar 16 drives the rotating shaft 13 to rotate reciprocally. The rotating shaft 13 further drives the movable flow guiding block 7 to swing reciprocally in the chute 1, realizing the diversion and stirring of the molten aluminum. Stirring can make the molten aluminum mix fully, make the molten aluminum in each part of the chute 1 be treated by the magnetic field more evenly, comprehensively improve the grain refinement effect. At the same time, stirring can break up the formed crystal nuclei and make them evenly disperse in the molten aluminum, increasing the number of effective nucleation cores. More cores mean that more fine grains can be formed during solidification, making the microstructure of the final aluminum alloy more fine and uniform.

[0031] As Figure 2 shown, in this embodiment, a shaft seat is fixed to the top of the substrate 21. The inner wall of the shaft seat is fixedly connected to the circumferential surface of the rotating shaft 13. The shaft seat plays a role in supporting and positioning the rotating shaft 13, ensuring the stability of the rotating shaft 13 during rotation, reducing shaking and deviation, so that the reciprocating swing of the movable flow guiding block 7 is more stable and smooth.

[0032] As Figure 1As shown, in this embodiment, brackets 14 are fixed to the tops of both accommodation shells 2. A connecting rod 20 is commonly connected between the two brackets 14. A guiding member is provided at the bottom of the connecting rod 20. The guiding member is fixed to the top of the substrate 21. The guiding member is used for guiding during the movement of the accommodation shell 2. One end of the movable rod 18 away from the air cylinder 15 is fixedly connected to the side of the bracket 14 away from the air cylinder 15. The bracket 14 is composed of angle irons distributed horizontally and vertically. The guiding member is composed of a guide rail fixed to the top of the substrate 21 and a slider slidably connected to the top of the guide rail. The slider is fixed to the bottom of the connecting rod 20. When the movable rod 18 reciprocates, through the connection between the movable rod 18 and the bracket 14, the bracket 14 and the accommodation shell 2 connected thereto are driven to reciprocate. During the movement, the connecting rod 20 drives the slider to move along the guide rail. The guide rail provides guidance for the movement of the accommodation shell 2 to ensure the smoothness and accuracy of the movement of the accommodation shell 2. The reciprocating movement of the accommodation shell 2 drives the pulse coil 4 and the heating coil 3 inside it to reciprocate. The movement of the heating coil 3 enables the heating magnetic field to uniformly contact the molten aluminum in the flow channel 1, improving the uniformity of heat preservation of the molten aluminum and reducing the heat loss during the flow of the molten aluminum. The movement of the pulse coil 4 enables the pulse magnetic field to cover a wider area in the flow channel 1, improving the uniformity of the grain refinement treatment of the molten aluminum. At the same time, the molten aluminum that was originally far from the pulse coil 4 and was weakly affected by the pulse magnetic field can also be subjected to the pulse magnetic field treatment, greatly increasing the amount of molten aluminum receiving the grain refinement treatment.

[0033] As Figure 3 and Figure 4 As shown, in this embodiment, flow guiding strips 9 are fixed to the opposite sides of the movable flow guiding block 7. The flow guiding strips 9 are used to guide the molten aluminum flowing through the driven flow guiding block 7 to flow towards the side position of the inner wall of the flow channel 1. The flow guiding strips 9 are silicon nitride ceramics. When the molten aluminum flows through the driven flow guiding block 7, the flow guiding strips 9 further guide the molten aluminum to flow towards the side position of the inner wall of the flow channel 1, enhancing the flow guiding effect of the movable flow guiding block 7 on the molten aluminum and enabling more molten aluminum to approach the pulse coil 4 on the side of the inner wall of the flow channel 1, thereby improving the grain refinement treatment effect of the pulse coil 4 on the molten aluminum.

[0034] As Figure 4As shown in the figure, in this embodiment, inclined flow guiding vanes 10 are fixed on both opposite sides of the movable flow guiding block 7. The number of the inclined flow guiding vanes 10 is several. The inclined flow guiding vanes 10 are fixed at the end of the flow guiding bar 9, and an inclined flow guiding channel is formed between two adjacent inclined flow guiding vanes 10. The material of the inclined flow guiding vanes 10 is silicon nitride ceramic. The movable flow guiding block 7, the flow guiding bar 9 and the inclined flow guiding vanes 10 can be formed by dry pressing, and then sintered. The magnetic field in the middle position outside the pulsed magnetic field is relatively strong, while the magnetic fields above and below the pulsed magnetic field outside are relatively weak. The molten aluminum flowing through the bottom position of the inner wall of the runner 1 corresponds to the lower position outside the pulsed magnetic field. The molten aluminum flowing through the movable flow guiding block 7 changes its flow direction under the action of the inclined flow guiding channel formed by the inclined flow guiding vanes 10, so that the molten aluminum at the bottom position of the inner wall of the runner 1 flows obliquely upward, enabling the molten aluminum that was originally difficult to fully receive the pulsed magnetic field treatment to be better treated by the pulsed magnetic field, further improving the uniformity of the grain refinement treatment of the molten aluminum and optimizing the microstructure of the aluminum alloy.

[0035] As Figure 4 shown in the figure, in this embodiment, a flow guiding surface 11 is arranged on the side of the inclined flow guiding vane 10 facing the direction of the molten aluminum. The flow guiding surface 11 is inclined. The inclined flow guiding surface 11 is used to prevent the molten aluminum from accumulating at the end position of the inclined flow guiding vane 10, so that the molten aluminum can smoothly pass through the end position of the inclined flow guiding vane 10.

[0036] As Figure 3 and Figure 4 shown in the figure, in this embodiment, a flow guiding surface 8 is arranged on the side of the movable flow guiding block 7 facing the direction of the molten aluminum. The flow guiding surface 8 is arc-shaped. The arc-shaped flow guiding surface 8 can play a buffering and preliminary flow guiding role for the flowing molten aluminum, enabling the molten aluminum to contact the movable flow guiding block 7 more smoothly and flow more efficiently towards the position on the side of the inner wall of the runner 1 close to the pulse coil 4 under the action of the movable flow guiding block 7, laying a good foundation for the subsequent molten aluminum to receive the pulsed magnetic field treatment.

[0037] Working principle: After the aluminum alloy liquid flows into the runner 1, it is first guided by the fixed flow guiding plate 6 and then flows through the position of the movable flow guiding block 7. Under the guiding action of the movable flow guiding block 7, the molten aluminum is guided to flow towards the position on the side of the inner wall of the runner 1 close to the pulse coil 4, enabling the molten aluminum that originally flowed in the middle position inside the runner 1 to be closer to the pulse coil 4, creating conditions for better grain refinement treatment. At the same time, during the telescopic movement of the piston rod of the cylinder 15, the piston rod of the cylinder 15 drives the driving column 19 to reciprocate through the movable rod 18. During the reciprocating movement of the driving column 19, the opposite sides of the inner wall of the long groove 17 are alternately squeezed, so that the square bar 16 drives the rotating shaft 13 to reciprocate, and the rotating shaft 13 drives the movable flow guiding block 7 to swing reciprocally in the runner 1;

[0038] During the reciprocating swing of the movable flow guide block 7, the molten aluminum is stirred. The stirring makes the molten aluminum fully mixed. On the one hand, it makes the treatment of the molten aluminum in each part of the flow channel 1 by the magnetic field generated by the pulse coil 4 in the accommodating shell 2 more balanced, comprehensively improving the grain refinement effect. On the other hand, the stirring can break up the formed crystal nuclei and make them evenly dispersed in the molten aluminum, increasing the number of effective nucleation cores and making the microstructure of the final aluminum alloy finer and more uniform;

[0039] At the same time, during the reciprocating movement of the movable rod 18, the accommodating shell 2 is driven to reciprocate through the support 14. When the support 14 moves, the slider is driven to move along the guide rail through the connecting rod 20. The guide rail provides guidance for the reciprocating movement of the support 14 and the accommodating shell 2. During the reciprocating movement of the accommodating shell 2, the pulse coil 4 and the heating coil 3 are driven to reciprocate. The reciprocating movement of the heating coil 3 can make the heating magnetic field contact the molten aluminum in the flow channel 1 evenly, improve the uniformity of heat preservation of the molten aluminum, and reduce the heat loss during the flow of the molten aluminum. The reciprocating movement of the pulse coil 4 makes the pulse magnetic field cover a wider area in the flow channel 1, improves the uniformity of the grain refinement treatment of the molten aluminum, and at the same time enables the molten aluminum that was originally far from the pulse coil 4 and weakly affected by the pulse magnetic field to also be treated by the pulse magnetic field, greatly increasing the amount of molten aluminum receiving the grain refinement treatment;

[0040] The flow guide bar 9 is used to further guide the molten aluminum flowing through the driven flow guide block 7 to flow towards the side position of the inner wall of the flow channel 1, improving the flow guiding effect of the movable flow guide block 7 on the molten aluminum, thereby improving the grain refinement treatment effect of the pulse coil 4 on the molten aluminum. The inclined flow guide piece 10 is used to further guide the molten aluminum flowing through the movable flow guide block 7, so that the molten aluminum located at the bottom position of the inner wall of the flow channel 1 flows obliquely upward in the flow channel 1, so that the molten aluminum located at the bottom of the inner wall of the flow channel 1 can be better treated by the pulse magnetic field, further improving the uniformity of the grain refinement treatment of the molten aluminum.

[0041] The present utility model covers any substitutions, modifications, equivalent methods and solutions made on the essence and scope of the present utility model. In order to enable the public to have a thorough understanding of the present utility model, specific details are described in detail in the above preferred embodiments of the present utility model. However, those skilled in the art can fully understand the present utility model without the description of these details.

[0042] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A pulsed magnetic field-based aluminum alloy grain refining device, comprising a flow channel (1), wherein opposite sides of the flow channel (1) are provided with a containing shell (2), wherein a plurality of heating coils (3) and a plurality of pulse coils (4) are provided in the containing shell (2), wherein the heating coil (3) is located between two adjacent pulse coils (4), and wherein: Also includes: A mixing mechanism (5), the mixing mechanism (5) comprising a fixed guide plate (6) fixed on opposite sides of the inner wall of the flow channel (1), a moving guide block (7) being arranged in the flow channel (1), a driving assembly (12) being arranged on the top of the moving guide block (7), the driving assembly (12) being used for the moving guide block (7) to swing back and forth in the flow channel (1).

2. The aluminum alloy grain refining device based on pulsed magnetic field according to claim 1 is characterized in that: The driving assembly (12) comprises a base plate (21) arranged at the top of the flow channel (1), a support column is fixed at the bottom of the base plate (21), the support column is fixed to the top of the flow channel (1), a cylinder (15) is fixed at the top of the base plate (21), a movable rod (18) is fixed at the telescopic end of the cylinder (15), a rotating shaft (13) is fixed at the top of the moving guide block (7), the top of the rotating shaft (13) movably passes through the base plate (21) and extends to the top of the base plate (21), a square bar (16) is fixed at the top of the rotating shaft (13), a long groove (17) is opened at the top of the square bar (16), a driving column (19) is fixed at the top of the movable rod (18), and the circumferential surface of the driving column (19) is slidably connected to the inner wall of the long groove (17).

3. The aluminum alloy grain refining device based on pulsed magnetic field according to claim 2 is characterized in that: A shaft seat is fixed on the top of the base plate (21), and the inner wall of the shaft seat is fixedly connected to the circumferential surface of the rotating shaft (13).

4. The aluminum alloy grain refining device based on pulsed magnetic field according to claim 2, characterized in that: A bracket (14) is fixed on the top of each of the two containing shells (2), a connecting rod (20) is commonly connected between the two brackets (14), a guide piece is provided at the bottom of the connecting rod (20), the guide piece is fixed on the top of the base plate (21), and the guide piece is used to guide the containing shell (2) during movement, and one end of the movable rod (18) away from the cylinder (15) is fixedly connected to the side of the bracket (14) away from the cylinder (15).

5. The aluminum alloy grain refining device based on pulsed magnetic field according to claim 1, characterized in that: Guide strips (9) are fixed on opposite sides of the moving guide block (7), and the guide strips (9) are used to guide the aluminum liquid flowing through the moving guide block (7) to flow toward the side of the inner wall of the flow channel (1).

6. The aluminum alloy grain refinement device based on pulsed magnetic field according to claim 5, characterized in that: The opposite sides of the moving guide block (7) are both fixed with inclined guide pieces (10), the number of the inclined guide pieces (10) is several, the inclined guide pieces (10) are fixed to the ends of the guide strips (9), and an inclined guide channel is formed between two adjacent inclined guide pieces (10).

7. The aluminum alloy grain refining device based on pulsed magnetic field according to claim 6, characterized in that: The inclined guide plate (10) is provided with a drainage surface (11) on the side facing the direction of the aluminum liquid, and the drainage surface (11) is inclined.

8. The aluminum alloy grain refining device based on pulsed magnetic field according to claim 1, characterized in that: The side of the moving guide block (7) facing the direction of the aluminum liquid is provided with a guide surface (8), and the guide surface (8) is arc-shaped.

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