Powder preparation device based on single-roller melt rapid quenching method

Abstract

The invention discloses a powder preparation device based on a single-roller melt rapid quenching method, and belongs to the technical field of amorphous ribbon preparation. The powder preparation device based on the single-roller melt rapid quenching method comprises an equipment room, a forming bin and a recycling bin are arranged in the equipment room, and discharging equipment is installed at the top end in the forming bin; a base is installed in the forming bin, a motor is installed at the top of the base, a chassis is installed at the output end of the motor, an electric cylinder is installed at the top of the chassis, a connecting rod is installed in the middle of the top face of the chassis, and a sphere is installed at the top of the connecting rod. According to the invention, the turntable is adopted to prepare the crystal ribbon, the melt is formed on the plane, the melt is prevented from falling off from the rotating roller due to the action of centrifugal force when the melt is formed on the rotating roller, the inclination of the material bearing disc can be continuously changed, and the material bearing disc is matched with rotation, so that the melt is fully spread and formed, and a thin ribbon with enough thickness is formed.

Description

Technical Field

[0001] The invention belongs to the technical field of preparation of amorphous thin strips, and in particular relates to a powder preparation device based on a single-roll melt rapid quenching method. Background Art

[0002] Single roll rapid quenching method, also known as melt cold roll spinning method, continuous casting thin strip method. Bedell invented the method of producing amorphous strips, such as Figure 1 and Figure 2 As shown in the figure, the molten metal is sprayed onto the surface of the high-speed rotating cooling roller and spreads under the action of gravity and wetting to form a molten pool; the interface layer between the molten pool and the cooling roller is rapidly cooled and solidified, and continues to cool as the cooling roller rotates to form a metal strip; the metal strip shrinks itself and detaches from the roller rim surface under the action of centrifugal force.

[0003] When the roller is rotated, the melt is subjected to centrifugal force perpendicular to the roller contact surface and outward. The centrifugal force makes the melt tend to fall off the roller surface instead of spreading on the roller surface. When the centrifugal force is greater than the adhesion force, the molten metal falls off the roller surface before it is fully cooled, forming a splashing phenomenon of droplets. In addition, in order to effectively spread the melt on the roller surface and improve the wettability of the roller and the melt, it is necessary to consider viscosity (μ), surface tension (γ), wettability, surface roughness (Ra), temperature (T), and phase change factors, adjust multiple parameters such as the melt injection speed, angle, distance, roller speed, and roller material wettability, etc., increase the complexity of the process. For some molten metal materials with high viscosity and poor wetting with the roller, it is difficult to form a strip no matter how the process parameters are adjusted, and a fast-solidifying material with a smooth and uniform surface cannot be obtained. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the prior art and provide a powder preparation device based on a single-roll melt rapid quenching method.

[0005] The technical solution adopted to solve the above technical problems is: a powder preparation device based on a single-roll melt rapid quenching method, including an equipment room, a molding bin and a recovery bin are arranged inside the equipment room, a unloading device is installed at the top of the molding bin, a base is installed inside the molding bin, a motor is installed on the top of the base, a chassis is installed at the output end of the motor, an electric cylinder is installed on the top of the chassis, a connecting rod is installed in the middle position of the top surface of the chassis, a sphere is installed on the top of the connecting rod, the outer surface of the sphere is covered with a receiving block, a receiving pan is installed on the top of the receiving block, a refrigeration bellows is installed on the inner top of the recovery bin, and a recovery device is installed on the side wall of the recovery bin.

[0006] Furthermore, the unloading equipment includes a feed barrel, which is installed at the top of the molding bin, a partition is installed inside the feed barrel, one end of the feed barrel is connected to a feed pipe, an electric refrigeration device and a fan are installed in sequence inside the feed barrel at the end away from the feed pipe, a drying layer and a ventilation pipe are installed in sequence inside the feed barrel at the end away from the feed pipe, and the outer surface of the feed barrel is connected to a pressure nozzle located above the receiving tray at one end close to the feed pipe. Through the mutual coordination between the components mentioned in the above content, the generation of thin strips on the plane is realized, and combined with the switching of the rotation speed and the direction of the receiving tray, the thin strips are transferred from the receiving tray to the recycling equipment, and the molding operation is performed on the plane. By changing the inclination of the plane, the situation where the melt is separated from the roller surface due to molding on the rotating roller can be avoided, thereby reducing the generation of melt splashing.

[0007] Furthermore, the recycling equipment includes an assembly block, which is installed on the inner wall of the recycling bin, an assembly frame is installed on the side of the assembly block, a mounting frame is installed on the top surface of the assembly frame, a recycling cylinder is installed on the bottom of the mounting frame, and a first conveyor belt and a second conveyor belt are installed at the inner end of the recycling cylinder. Through the internal components of the recycling equipment, the formed crystal ribbon can be transferred to the equipment used in the packaging process.

[0008] Furthermore, the number of the electric cylinders is not less than eight and they are arranged in the form of a circular array on the top of the chassis; the top surface of the output end of the electric cylinder is provided with a ball head connected by a spring telescopic rod; the bottom of the material receiving tray is installed with a ball seat with a limiting groove on the bottom surface and the width of the limiting groove arranged inside the ball seat is larger than the width of the horizontal cross-sectional profile of the ball head arranged on the top of the electric cylinder; the electric cylinder is engaged with the protrusion at the bottom of the material receiving tray through the ball head arranged on the top; after being connected to the material receiving tray in the above manner, when each electric cylinder changes its length and changes the inclination of the material receiving tray, due to the connection between the electric cylinder and the material receiving tray, the electric cylinder still maintains the connection with the material receiving tray when the angle of the material receiving tray changes.

[0009] Furthermore, a conductive layer connected to the partition is provided on the top surface of the area inside the feed barrel between the partition and the feed pipe, and the high conductivity of the conductive layer is utilized to quickly transfer the temperature.

[0010] Furthermore, a sloped platform connected to the partition is provided on the bottom surface of the area inside the feed barrel between the partition and the ventilation pipe, and ventilation holes are provided inside the sloped platform. The setting of the slope allows the fan to deliver airflow into another area inside the feed barrel.

[0011] Furthermore, the recovery drum is arranged inside the recovery bin at an acute angle to the horizontal line, so that the recovery drum is placed at a certain inclination, allowing the formed thin crystal ribbon to slide toward the conveyor belt.

[0012] Furthermore, the end of the recovery cylinder extends to the outside of the recovery bin and is covered with a transparent glass cover. The glass cover can not only form a closed space, but also allow staff to observe the status of the finished product.

[0013] Furthermore, the first conveyor belt is arranged in a direction parallel to the position of the recovery drum, and the second conveyor belt is arranged in a direction perpendicular to the first conveyor belt, so that the formed product can change its moving direction during transportation, allowing the product to be transferred from the preparation device to the machine for the next process.

[0014] Furthermore, the outer surface of the feed barrel is provided with a through hole matching the ventilation pipe, and the outer surface of the feed barrel is provided with a through hole matching the electric refrigeration equipment and the fan and having a sealing ring, and the circuit assembly of the electrical components of the feed barrel is facilitated by the provided through holes.

[0015] The beneficial effects of the present invention are as follows: (1) The present invention adopts a turntable to prepare a crystal ribbon, allowing the melt to be molded on a flat surface, thereby avoiding the melt falling off the roller due to the centrifugal force when the melt is molded on the roller, and the receiving plate can continuously change the inclination, and the melt can be fully spread and formed in coordination with the rotation to form a thin ribbon of sufficient thickness; (2) The recovery equipment set by the present invention and the combination of the electric refrigeration equipment and the fan can further crush the wafers during the transportation process when collecting the thin ribbon, so that they can be crushed into powder more easily later, and the equipment can also be cooled quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the internal structure of the molding bin of the present invention;

[0018] Figure 3 This is a front view of the internal structure of the molding bin of the present invention;

[0019] Figure 4 It is a schematic diagram of the internal structure of the feed barrel of the present invention;

[0020] Figure 5 It is a schematic diagram of the internal structure of the recovery bin of the present invention;

[0021] Figure 6 This is a front view of the internal structure of the recovery bin of the present invention;

[0022] Figure 7 It is a schematic diagram of the internal structure of the recovery cylinder of the present invention.

[0023] Figure numerals: 1. Equipment room; 2. Molding bin; 3. Recovery bin; 4. Base; 5. Motor; 6. Chassis; 7. Electric cylinder; 8. Connecting rod; 9. Sphere; 10. Receiving block; 11. Receiving tray; 12. Refrigeration bellows; 13. Feed barrel; 14. Partition; 15. Feed pipe; 16. Electric refrigeration equipment; 17. Fan; 18. Drying layer; 19. Ventilation pipe; 20. Pressure nozzle; 21. Assembly block; 22. Assembly frame; 23. Mounting frame; 24. Recovery barrel; 25. First conveyor belt; 26. Second conveyor belt. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] like Figures 1 to 7 As shown, a powder preparation device based on a single-roll melt rapid quenching method of the present embodiment comprises an equipment room 1, wherein a molding bin 2 and a recovery bin 3 are arranged inside the equipment room 1, a material unloading device is installed at the top of the molding bin 2, and the material unloading device comprises a feed barrel 13, the feed barrel 13 is installed at the top of the molding bin 2, a partition 14 is installed inside the feed barrel 13, a conductive layer connected to the partition 14 is arranged on the top surface of the area between the partition 14 and the feed pipe 15 inside the feed barrel 13, one end of the feed barrel 13 is connected to the feed pipe 15, and an electric refrigeration device 16 and a fan 17 are installed in sequence at the end of the feed barrel 13 away from the feed pipe 15, Figure 4 As shown, the interior of the feed barrel 13 is divided into two areas, and Figure 4 From the perspective shown, the left side of the partition 14 is the melt passing area, and the right side of the partition 14 belongs to the refrigeration area. The conductive layer is made of metal material or alloy material with high thermal conductivity, and the conductive layer is arranged above the left area of ​​the partition 14, and the conductive layer is connected to the partition 14. When the electric refrigeration device 16 is working, the electric refrigeration device 16 is provided with a wing plate, and the wing plate is the refrigeration end, and the position can be covered by the airflow blown out by the fan 17. Therefore, when the feed barrel 13 needs to be cooled, the fan 17 rotates to guide the airflow to pass through the electric refrigeration device 16 to generate cold air. After the preparation is completed, the feed barrel 13 is quickly cooled.

[0026] like Figure 4As shown, the outer surface of the feed barrel 13 is provided with a through hole matching the vent pipe 19, and the outer surface of the feed barrel 13 is provided with a through hole matching the electric refrigeration device 16 and the fan 17 and having a sealing ring. The inner part of the feed barrel 13 away from the end of the feed pipe 15 is sequentially installed with a drying layer 18 and a vent pipe 19. In order to absorb moisture in the gas introduced, the drying layer 18 keeps dry and avoids frost. The bottom surface of the area between the partition 14 and the vent pipe 19 inside the feed barrel 13 is provided with an inclined platform connected to the partition 14, and the inner surface of the inclined platform is provided with a through hole matching the electric refrigeration device 16 and the fan 17. A ventilation hole is provided in the part. Combined with the above content, in order to avoid oxidation of the material when preparing the crystal ribbon, the melt used needs to be prepared in a protective gas environment. Therefore, the protective gas is connected from the outside through the ventilation pipe 19, and the inclined platform is provided with a ventilation hole, so that the feed barrel 13 can be in a protected state when the melt enters. Similarly, the sealing ring is provided to prevent external gas from entering the feed barrel 13. The outer surface of the feed barrel 13 is connected to the end of the feed pipe 15 that is close to the pressure nozzle 20 located above the receiving tray 11.

[0027] like Figure 5As shown, a base 4 is installed inside the molding bin 2, a motor 5 is installed on the top of the base 4, a chassis 6 is installed on the output end of the motor 5, an electric cylinder 7 is installed on the top of the chassis 6, a connecting rod 8 is installed in the middle of the top surface of the chassis 6, a spherical body 9 is installed on the top of the connecting rod 8, and a receiving block 10 is covered on the outer surface of the spherical body 9. The number of electric cylinders 7 is not less than eight and they are arranged on the top of the chassis 6 in the form of a ring array. A ball head connected by a spring telescopic rod is arranged on the top surface of the output end of the electric cylinder 7, and a bottom surface is installed at the bottom of the receiving tray 11. A ball seat with a limiting groove is provided, and the width of the limiting groove provided inside the ball seat is greater than the width of the horizontal cross-sectional profile of the ball head provided on the top of the electric cylinder 7. The electric cylinder 7 is engaged with the bottom convex block of the receiving plate 11 by providing a ball head on the top. In combination with the above content, a ball seat that supports the ball head, the surface of the ball head is provided with a protrusion protruding from the surface of the ball head along its horizontal radial direction, a limiting groove is provided on the ball seat, the ball head is rotatably connected to the ball seat, the protrusion is provided in the limiting groove and rotatably connected to the limiting groove, and the maximum width of the cross-sectional profile of the protrusion in the horizontal direction is smaller than the limiting groove The slot width is small, so as to realize full-angle rotation while preventing the ball head from rotating in the horizontal direction. Due to the connection mode between the electric cylinder 7 and the bottom of the receiving tray 11, as the length of the output end of the electric cylinder 7 changes, combined with the number of electric cylinders 7, the connection points between each electric cylinder 7 and the bottom of the receiving tray 11 can realize universal rotation, so that the receiving tray 11 can change the inclination degree at any time. Then, when the device uses the plane as the molding surface of the melt, after the melt is ejected from the pressure nozzle 20 and falls on the surface of the receiving tray 11, as the angle of the receiving tray 11 changes and accompanied by the electric cylinder 7, the melt is ejected from the pressure nozzle 20 and falls on the surface of the receiving tray 11. The output end of the machine 5 rotates, and the rotation direction of the motor 5 is opposite to the flow of the melt, so that the melt flows on the rotating inclined plane and gradually cools to form a crystal ribbon. Therefore, the material used for the receiving tray 11 is a metal material or alloy material with high thermal conductivity, and the tray surface is ensured to be smooth enough to facilitate the subsequent separation of the crystal ribbon. After the crystal ribbon is cooled and formed, the motor 5 repeatedly rotates at high frequency and low speed to separate the crystal ribbon from the receiving tray 11 and break it into chips, and the change in the inclination of the receiving tray 11 allows the chips to slide into the recovery cylinder 24.

[0028] like Figure 6 as well as Figure 7As shown, a receiving tray 11 is installed on the top of the receiving block 10, and a refrigeration bellows 12 is installed on the inner top of the recovery bin 3. In order to prevent the crystal ribbon from being oxidized, the refrigeration bellows 12 is connected to the external equipment for conveying protective gas. Through the operation of the refrigeration bellows 12, cold air is delivered to cool the inside of the device to help the crystal ribbon cool and form. A recovery device is installed on the side wall of the recovery bin 3. The recovery device includes an assembly block 21, which is installed on the inner wall of the recovery bin 3. An assembly frame 22 is installed on the side of the assembly block 21, a mounting frame 23 is installed on the top surface of the assembly frame 22, and a recovery cylinder 24 is installed on the bottom of the mounting frame 23. The recovery cylinder 24 is at an acute angle to the horizontal line. The recovery cylinder 24 is arranged in the form of an angle inside the recovery bin 3, so the inner surface of the recovery cylinder 24 should be as smooth as possible, and in order to allow the formed crystal ribbon to smoothly enter the recovery cylinder 24, the width of the recovery cylinder 24 should be greater than the diameter of the receiving plate 11, and the end of the recovery cylinder 24 extends to the outside of the recovery bin 3 and is covered with a transparent glass cover. The first conveyor belt 25 and the second conveyor belt 26 are installed at the inner end of the recovery cylinder 24. The setting direction of the first conveyor belt 25 is parallel to the position of the recovery cylinder 24, and the setting direction of the second conveyor belt 26 is perpendicular to the setting direction of the first conveyor belt 25. In the conveying process, the friction force generated during the conveying acts on the wafer, which helps to form powder in the subsequent process.

[0029] The working principle of this embodiment is as follows. When the device is used, the melt is connected to the feed tube 15 and enters the feed barrel 13. Due to the obstruction of the partition 14, the melt flows into the feed tube 15 and is ejected by the pressure nozzle 20. When the pressure nozzle 20 delivers the melt to the receiving plate 11, the output end of the electric cylinder 7 moves, and a height difference is formed between different electric cylinders 7 as the output end of the electric cylinder 7 moves, so that the receiving plate 11 forms an inclination. At the same time, the output end of the motor 5 rotates. When the melt falls onto the receiving plate 11, the melt is affected by the inclination of the receiving plate 11, and cooperates with gravity and the centrifugal force generated by the rotation. Force, flow forming ratio diffusion into a thin ribbon on the receiving tray 11, and when the device is working, the refrigeration bellows 12 cools the internal space temperature of the device to a sufficient degree of supercooling, so that the melt can crystallize smoothly. When the melt is crystallized, the motor 5 reverses to separate the crystal ribbon from the surface of the receiving tray 11, and under the action of the electric cylinder 7, gradually changes the slope of the receiving tray 11, so that the crystal ribbon slides into the recovery cylinder 24, and slides onto the conveyor belt with the slope of the recovery cylinder 24, and is sent out by the conveyor belt. When the melt is finished, the electric refrigeration device 16 works, and the fan 17 outputs airflow to cool the inside of the feed barrel 13. The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of protection of the present invention.

Claims

1. A powder preparation device based on a single-roll melt rapid quenching method, comprising an equipment room (1), characterized in that: The equipment room (1) is provided with a molding bin (2) and a recovery bin (3), the top of the molding bin (2) is provided with a material unloading device, the molding bin (2) is provided with a base (4), the top of the base (4) is provided with a motor (5), the output end of the motor (5) is provided with a chassis (6), the top of the chassis (6) is provided with an electric cylinder (7), a connecting rod (8) is provided at the middle position of the top surface of the chassis (6), a spherical body (9) is provided at the top of the connecting rod (8), the outer surface of the spherical body (9) is covered with a receiving block (10), the top of the receiving block (10) is provided with a receiving tray (11), the inner top of the recovery bin (3) is provided with a refrigeration bellows (12), and the side wall of the recovery bin (3) is provided with a recovery device.

2. A powder preparation device based on a single-roll melt rapid quenching method according to claim 1, characterized in that: The unloading equipment comprises a feed barrel (13), wherein the feed barrel (13) is installed at the top end inside the molding bin (2), a partition (14) is installed inside the feed barrel (13), one end of the feed barrel (13) is connected to a feed pipe (15), an electric refrigeration device (16) and a fan (17) are installed in sequence inside the end of the feed barrel (13) away from the feed pipe (15), a drying layer (18) and a ventilation pipe (19) are installed in sequence inside the end of the feed barrel (13) away from the feed pipe (15), and the outer surface of the feed barrel (13) close to the feed pipe (15) is connected to a pressure nozzle (20) located above the receiving plate (11).

3. The powder preparation device based on the single-roll melt rapid quenching method according to claim 1, characterized in that: The recycling device comprises an assembly block (21), wherein the assembly block (21) is mounted on the inner wall of a recycling bin (3), an assembly frame (22) is mounted on the side of the assembly block (21), a mounting frame (23) is mounted on the top surface of the assembly frame (22), a recycling drum (24) is mounted on the bottom of the mounting frame (23), and a first conveyor belt (25) and a second conveyor belt (26) are mounted at the inner end of the recycling drum (24).

4. The powder preparation device based on the single-roll melt rapid quenching method according to claim 1, characterized in that: The number of the electric cylinders (7) is not less than eight and they are arranged in a circular array on the top of the chassis (6); the top surface of the output end of the electric cylinder (7) is provided with a ball head connected by a spring telescopic rod; the bottom of the receiving plate (11) is provided with a ball seat with a limit groove on the bottom surface, and the width of the limit groove arranged inside the ball seat is greater than the width of the horizontal section profile of the ball head arranged on the top of the electric cylinder (7); the electric cylinder (7) is engaged with the bottom convex block of the receiving plate (11) through the ball head arranged on the top.

5. The powder preparation device based on the single-roll melt rapid quenching method according to claim 2, characterized in that: A conductive layer connected to the partition (14) is provided on the top surface of the area inside the feed barrel (13) between the partition (14) and the feed pipe (15).

6. The powder preparation device based on the single-roll melt rapid quenching method according to claim 2, characterized in that: A sloped platform connected to the partition (14) is provided on the bottom surface of the area between the partition (14) and the ventilation pipe (19) inside the feed cylinder (13), and a ventilation hole is provided inside the sloped platform.

7. The powder preparation device based on the single-roll melt rapid quenching method according to claim 3, characterized in that: The recovery cylinder (24) is arranged inside the recovery bin (3) in a form of an acute angle with the horizontal line.

8. The powder preparation device based on the single-roll melt rapid quenching method according to claim 3, characterized in that: The end of the recovery cylinder (24) extends to the outside of the recovery bin (3) and is covered with a transparent glass cover.

9. The powder preparation device based on the single-roll melt rapid quenching method according to claim 3, characterized in that: The first conveyor belt (25) is arranged in a direction parallel to the position of the recovery drum (24), and the second conveyor belt (26) is arranged in a direction perpendicular to the first conveyor belt (25).

10. The powder preparation device based on the single-roll melt rapid quenching method according to claim 2, characterized in that: The outer surface of the feed barrel (13) is provided with a through hole matching the vent pipe (19), and the outer surface of the feed barrel (13) is provided with a through hole matching the electric refrigeration device (16) and the fan (17) and having a sealing ring.

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