Magnetic field treatment device for small pouring cup for casting aluminum alloy

Abstract

The utility model provides a magnetic field treatment device for a small pouring cup for casting aluminum alloy, and belongs to the technical field of aluminum alloy casting. Comprising a base, an inner cover and an outer cover are fixed to the top of the base, the top of the inner cover and the top of the outer cover are jointly connected with an upper cover, and the outer wall of the inner cover is wrapped with heat insulation materials. Through the arrangement of the coil, the pouring spoon filled with molten aluminum is placed in the inner cover, the coil is started, the pulsed magnetic field is generated, the molten aluminum is subjected to pulsed magnetic field treatment under the condition that the molten aluminum is not contacted, in the treatment process, the output voltage is constantly changed, and the molten aluminum is treated for a certain period of time; the pulsed magnetic field can be transmitted to atomic groups of substances in a non-contact mode in the form of magnetic potential energy, the behaviors of arrangement, coordination, migration and the like of atoms are intervened, nucleation, growth, grain boundary movement, precipitated phase morphology and the like are affected in the initial stage of solid-liquid phase change or solid-solid phase change of materials, and therefore the grain size and mechanical performance of the aluminum alloy are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy casting, in particular to a magnetic field processing device for casting a small pouring cup of aluminum alloy. Background Art

[0002] Cast aluminum alloys have the characteristics of low density, high strength, good thermal conductivity and easy casting. Different casting methods can be used, such as sand casting and low-pressure casting, to produce parts with complex shapes and precise dimensions. They are widely used in the aerospace field. Sand casting is one of the most common casting methods. The pouring cup is a key component in the sand casting process, which is used to ensure the uniformity of the molten metal when it flows into the mold.

[0003] It is usually difficult to obtain a uniform aluminum alloy structure when manufacturing aluminum alloys through sand casting, and the solidification structure of the casting is coarse, which greatly affects the mechanical properties of the aluminum alloy casting. Therefore, the present application provides a magnetic field processing device for casting a small pouring cup of aluminum alloy to meet the needs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a magnetic field processing device for casting a small pouring cup of aluminum alloy to solve the technical problem that when sand casting aluminum alloy, the solidification structure of the casting is coarse, thereby greatly affecting the mechanical properties of the aluminum alloy casting.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A magnetic field processing device for casting a small aluminum alloy pouring cup includes a base, an inner cover and an outer cover are fixed to the top of the base, the tops of the inner cover and the outer cover are connected to an upper cover, the outer wall of the inner cover is wrapped with a heat insulating material, a coil is wound around the side of the heat insulating material away from the inner cover, and the coil is located inside the outer cover; a heat dissipation component for dissipating heat from the coil is provided in the outer cover.

[0007] The heat dissipation assembly includes an air intake fan, an air inlet is provided on the circumferential surface of the outer cover near the top, an air intake pipe is fixed on the circumferential surface of the outer cover corresponding to the air inlet, the bottom of the air intake pipe is connected to the air intake cover, the air intake fan is fixed to the inner wall of the air intake cover, a cooling fin is fixed at the corner of the side of the air intake cover, an L-shaped connecting ring is fixed to the bottom of the upper cover, the bottom of the upper cover is rotatably connected to a swivel, an annular groove is provided on the top of the swivel, the inner wall of the annular groove is rotatably connected to the L-shaped connecting ring, a circular groove is provided at the bottom of the swivel, and a number of wind shields are fixed to the inner wall of the circular groove.

[0008] Preferably, a brush is fixed on the top of the inner wall of the circular groove, and the bristles of the brush fit the surface of the coil. A plurality of air outlets are opened on the top of the base, and a filter is fixed on the air inlet end of the air inlet cover, and the filter is a gauze.

[0009] Preferably, a bracket is fixed on the circumferential surface of the outer cover, and the side surface of the bracket is fixedly connected to the side surface of the air inlet cover.

[0010] Preferably, the inner wall of the circular groove close to the inner cover is an inclined surface.

[0011] Preferably, the bottoms of several windshield plates are commonly connected to a circular ring, and the central axis of the circular ring coincides with the central axis of the rotating ring.

[0012] Preferably, the inner wall of the ring is an inclined guiding surface.

[0013] Preferably, a reinforcing rib is fixed to the bottom of the ring, and the reinforcing rib is fixed to the side of the brush away from the coil.

[0014] Preferably, the side surface of the brush is provided with a V-shaped surface.

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

[0016] In the above scheme, through the setting of the coil, the pouring spoon filled with molten aluminum is placed in the inner cover, the coil is started to generate a pulsed magnetic field, and the molten aluminum is treated with a pulsed magnetic field without contacting the molten aluminum. During the treatment process, the output voltage keeps changing at all times and is treated for a certain period of time. The pulsed magnetic field can be transmitted to the atomic clusters of the material in the form of magnetic potential energy without contact, intervening in the arrangement, coordination and migration of atoms, and affecting the nucleation, growth, grain boundary movement, precipitation phase morphology, etc. in the early stage of the solid-liquid phase change or solid-solid phase change of the material, thereby significantly improving the grain size and mechanical properties of the aluminum alloy.

[0017] Through the setting of the air intake fan, the rotating ring and the brush, heat is generated during the operation of the coil. When the air intake fan is started, the air flow flows to the rotating ring position, and the rotating ring is rotated under the action of the wind shield. The air flow flows downward from the rotating ring and is discharged from the air outlet to achieve heat dissipation of the coil. At the same time, during the rotation of the rotating ring, the brush is driven to rotate along the surface of the coil, and the bristles on the brush are used to brush off the dust attached to the surface of the coil, thereby achieving automatic cleaning of the coil and preventing dust from affecting the heat dissipation of the coil, thereby further improving the heat dissipation capacity of the coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable one skilled in the relevant art to make and use the present disclosure.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2This is a schematic diagram of the three-dimensional structure of the air outlet of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the air inlet cover of the present utility model;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the brush of the present utility model;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the swivel of the utility model;

[0024] Figure 6 This is a cross-sectional view of the L-shaped connecting ring of the present invention;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the V-shaped surface of the present invention.

[0026] [Reference Signs]

[0027] 1. Base; 2. Inner cover; 3. Outer cover; 4. Coil; 5. Insulation material; 6. Upper cover; 7. Air inlet cover; 8. Air inlet duct; 9. Refrigeration fin; 10. Rotating ring; 11. Wind deflector; 12. Inclined surface; 13. Brush; 14. Ring; 15. Air outlet; 16. L-shaped connecting ring; 17. Filter; 18. Air inlet fan; 19. V-shaped surface; 20. Heat dissipation component; 21. Circular groove.

[0028] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. DETAILED DESCRIPTION

[0029] The following, combined with the accompanying drawings and specific embodiments, describes in detail a magnetic field treatment device for casting a small aluminum alloy pouring cup provided by the present invention. It is also noted that, for the sake of completeness, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative implementations for known techniques. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0030] like Figure 1-Figure 7As shown, an embodiment of the present invention provides a magnetic field treatment device for casting a small pouring cup of aluminum alloy, comprising a base 1, an inner cover 2 and an outer cover 3 are fixed to the top of the base 1, the tops of the inner cover 2 and the outer cover 3 are commonly connected to an upper cover 6, the outer wall of the inner cover 2 is wrapped with a heat-insulating material 5, a coil 4 is wound around the side of the heat-insulating material 5 away from the inner cover 2, the coil 4 is located inside the outer cover 3, a heat dissipation component 20 for dissipating heat from the coil 4 is provided in the outer cover 3, the heat-insulating material 5 can be the heat-insulating cotton in the prior art, the heat-insulating material 5 is used to prevent the heat generated by the coil 4 from being transferred to the aluminum liquid in the pouring spoon, the coil 4 is connected to a pulsed magnetic field power supply, and a pulsed magnetic field is generated by the coil 4, the pulsed magnetic field treatment significantly refines the primary α-A1 phase grains of the ZL114A aluminum alloy and improves the mechanical properties, the optimal treatment parameter magnetic induction intensity is 35mT / hour, the tensile strength, elongation and hardness are increased by 20.14%, 54.39% and 12.72% respectively. After heat treatment, these properties are further enhanced, with tensile strength and elongation increasing by up to 37.89% and 150% respectively, and hardness increasing by up to 21.6%;

[0031] like Figure 1-Figure 7 As shown, in this embodiment, the heat dissipation assembly 20 includes an air inlet fan 18, an air inlet is opened on the circumferential surface of the outer cover 3 near the top position, an air inlet pipe 8 is fixed on the circumferential surface of the outer cover 3 corresponding to the air inlet, and the bottom of the air inlet pipe 8 is connected to the air inlet cover 7, the air inlet fan 18 is fixed to the inner wall of the air inlet cover 7, and a cooling plate 9 is fixed at the corner of the side of the air inlet cover 7. The cooling plate 9 is used to cool the air flow entering the coil 4, thereby improving the heat dissipation capacity of the coil 4, an L-shaped connecting ring 16 is fixed to the bottom of the upper cover 6, and a rotating ring 10 is rotatably connected to the bottom of the upper cover 6. An annular groove is opened on the top of the rotating ring 10, and the inner wall of the annular groove is rotatably connected to the L-shaped connecting ring 16. A circular groove 21 is opened at the bottom of the rotating ring 10, and a number of wind shields 11 are fixed on the inner wall of the circular groove 21. A brush 13 is fixed on the top of the inner wall of the circular groove 21, and the bristles of the brush 13 are in contact with the surface of the coil 4. A number of air outlets 15 are opened on the top of the base 1.

[0032] like Figure 2 and Figure 3 As shown, in this embodiment, a filter 17 is fixed to the air inlet end of the air inlet cover 7. The filter 17 is a gauze mesh. The filter 17 is used to filter the airflow entering the air inlet cover 7 to make the airflow entering the air inlet cover 7 cleaner and tidier.

[0033] like Figure 1 As shown, in this embodiment, a bracket is fixed on the circumferential surface of the outer cover 3, and the side surface of the bracket is fixedly connected to the side surface of the air inlet cover 7. The bracket is used to connect and fix the outer cover 3 and the air inlet cover 7.

[0034] like Figure 6As shown, in this embodiment, the side of the inner wall of the circular groove 21 close to the inner cover 2 is a slope 12, and the slope 12 is used to guide the airflow flowing downward from the inner wall of the circular groove 21. Under the action of the slope 12, the airflow flows downward from the inner wall of the circular groove 21 and flows through the position of the coil 4, so that the airflow contacts the coil 4, thereby achieving heat dissipation of the coil 4.

[0035] like Figure 5 and Figure 6 As shown, in this embodiment, the bottoms of several windshields 11 are commonly connected to a circular ring 14, and the central axis of the circular ring 14 coincides with the central axis of the rotating ring 10. When the airflow flows downward from the rotating ring 10, it flows through the position of the circular ring 14. Under the separating effect of the circular ring 14, part of the airflow flows downward from the surface of the coil 4 to achieve direct heat dissipation at the coil 4, and part of the airflow flows downward from between the coil 4 and the outer cover 3 to increase the air fluidity at the coil 4, thereby achieving heat dissipation at the coil 4 again.

[0036] like Figure 6 As shown, in this embodiment, the inner wall of the ring 14 is an inclined guide surface, which is used to guide the airflow passing through, so that the airflow flows to the position of the coil 4, thereby improving the heat dissipation capacity of the coil 4.

[0037] like Figure 5 As shown, in this embodiment, a reinforcing rib is fixed to the bottom of the ring 14, and the reinforcing rib is fixed to the side of the brush 13 away from the coil 4. The reinforcing rib is used to improve the connection strength between the brush 13 and the ring 14 to prevent the brush 13 from deforming.

[0038] like Figure 7 As shown, in this embodiment, a V-shaped surface 19 is provided on the side of the brush 13. The V-shaped surface 19 is used to reduce the resistance of the brush 13 when it contacts the airflow during rotation, thereby making the rotation of the swivel 10 lighter and smoother.

[0039] Working principle: Place the pouring spoon filled with molten aluminum into the inner cover 2, connect the coil 4 to the pulse magnetic field power supply, start the pulse magnetic field power supply according to the electromagnetic parameters, so that the coil 4 generates a pulse magnetic field. The molten aluminum is treated with a pulse magnetic field without contacting the molten aluminum. During the treatment process, the output voltage keeps changing and the treatment lasts for 60 seconds. The pulse magnetic field can be transmitted to the atomic groups of the material in the form of magnetic potential energy without contact, intervening in the arrangement, coordination and migration of atoms, and affecting the nucleation, growth, grain boundary movement, precipitation phase morphology, etc. in the early stage of solid-liquid phase transition or solid-solid phase transition of the material. The pulse magnetic field treatment significantly refines the primary α-A1 phase grains of the aluminum alloy and improves the mechanical properties.

[0040] The coil 4 generates heat during operation. When the coil 4 is to be cooled, the air inlet fan 18 is started, and the outside air is filtered by the filter 17 and enters the air inlet cover 7 and flows through the cooling fins 9. After being cooled by the cooling fins 9, it flows to the swivel 10 through the air inlet pipe 8. The airflow blows to the multiple wind shields 11 on the swivel 10. Under the action of the wind shields 11, the swivel 10 rotates around the L-shaped connecting ring 16, and the airflow flows downward from the swivel 10, passes through the coil 4, and is discharged from the air outlet 15, thereby realizing the heat dissipation of the coil 4. At the same time, during the rotation of the swivel 10, the brush 13 is driven to rotate along the surface of the coil 4, and the dust attached to the surface of the coil 4 is brushed off by the bristles on the brush 13, thereby realizing automatic cleaning of the coil 4 and preventing dust from affecting the heat dissipation of the coil 4, thereby further improving the heat dissipation capacity of the coil 4.

[0041] When the airflow flows downward from the rotating ring 10, it flows through the position of the circular ring 14. Under the separation effect of the circular ring 14 and the guidance effect of the inclined guide surface of the inner wall of the circular ring 14, part of the airflow flows downward along the surface of the coil 4, thereby achieving direct heat dissipation at the coil 4. Part of the airflow flows downward from between the coil 4 and the outer cover 3, thereby increasing the air flow at the coil 4 and further achieving heat dissipation at the coil 4.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A magnetic field treatment device for casting a small pouring cup of aluminum alloy, comprising a base (1), characterized in that: An inner cover (2) and an outer cover (3) are fixed to the top of the base (1), and the tops of the inner cover (2) and the outer cover (3) are connected to an upper cover (6). The outer wall of the inner cover (2) is wrapped with a heat insulating material (5), and a coil (4) is wound around the side of the heat insulating material (5) away from the inner cover (2). The coil (4) is located inside the outer cover (3), and a heat dissipation component (20) for dissipating heat from the coil (4) is provided inside the outer cover (3).

2. The magnetic field treatment device for casting a small pouring cup of aluminum alloy according to claim 1, characterized in that: The heat dissipation assembly (20) includes an air inlet (18), an air inlet is provided on the circumferential surface of the outer cover (3) near the top, an air inlet pipe (8) is fixed on the circumferential surface of the outer cover (3) at a position corresponding to the air inlet, the bottom of the air inlet pipe (8) is connected to the air inlet cover (7), the air inlet fan (18) is fixed to the inner wall of the air inlet cover (7), a cooling plate (9) is fixed at the corner of the side of the air inlet cover (7), an L-shaped connecting ring (16) is fixed to the bottom of the upper cover (6), a rotating ring (10) is rotatably connected to the bottom of the upper cover (6), an annular groove is provided on the top of the rotating ring (10), the inner wall of the annular groove is rotatably connected to the L-shaped connecting ring (16), a circular groove (21) is provided on the bottom of the rotating ring (10), and a plurality of windshield plates (11) are fixed to the inner wall of the circular groove (21).

3. The magnetic field treatment device for casting a small pouring cup of aluminum alloy according to claim 2, characterized in that: A brush (13) is fixed to the top of the inner wall of the circular groove (21), and the bristles of the brush (13) are in contact with the surface of the coil (4). A plurality of air outlets (15) are provided on the top of the base (1). A filter (17) is fixed to the air inlet end of the air inlet cover (7), and the filter (17) is a gauze. A bracket is fixed to the circumferential surface of the outer cover (3), and the side of the bracket is fixedly connected to the side of the air inlet cover (7).

4. The magnetic field treatment device for casting a small pouring cup of aluminum alloy according to claim 2, characterized in that: The inner wall of the circular groove (21) is provided with a slope (12) on one side close to the inner cover (2).

5. The magnetic field treatment device for casting a small pouring cup of aluminum alloy according to claim 2, characterized in that: The bottoms of the plurality of windshield plates (11) are commonly connected to a circular ring (14), and the central axis of the circular ring (14) coincides with the central axis of the rotating ring (10).

6. The magnetic field treatment device for casting a small-sized pouring cup of aluminum alloy according to claim 5, characterized in that: The inner wall of the circular ring (14) is an inclined guiding surface.

7. The magnetic field treatment device for casting a small pouring cup of aluminum alloy according to claim 5, characterized in that: A reinforcing rib is fixed to the bottom of the circular ring (14), and the reinforcing rib is fixed to the side of the brush (13) away from the coil (4).

8. The magnetic field treatment device for casting a small pouring cup of aluminum alloy according to claim 3, characterized in that: A V-shaped surface (19) is provided on the side of the brush (13).

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