A high-efficiency powder making method and powder making system for processing soft magnetic materials

Abstract

The invention discloses a high-efficiency powder making method and a powder making system for soft magnetic material processing, belonging to the technical field of soft magnetic material powder making. The invention is to open multiple groups of strip making grooves on the original cooling roller, and add multiple cooling rings that match the strip making grooves one by one on one side of the cooling roller, and form a cooling ring cavity between the cooling ring and the strip making groove. During operation, a molten alloy is injected into the multiple cooling ring cavities by an injection structure, and gradually cooled to form a strip-shaped alloy strip during the rotation of the cooling roller. The cooling roller and the cooling ring cooperate not only to guide and limit the process of the molten alloy forming the alloy strip, and it is not easy to cause the alloy strip to change its shape during the formation process, but also to cool the inner and outer end surfaces of the alloy strip. After half a circle of rotation and transmission, the pressing and segmenting structure is used for continuous guiding pressing and segmenting. The segmented strip alloy directly falls into the grinding structure for multi-stage grinding treatment, and the operation continuity is strong, which greatly improves the production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of soft magnetic material powder making, and more specifically to a high-efficiency powder making method and a powder making system for soft magnetic material processing. Background Art

[0002] The metal soft magnetic alloy powder series has extremely low power loss characteristics and good DC superposition characteristics. It is widely used in household appliances such as photovoltaic inverters, DC charging piles, PFC circuits, energy-saving variable frequency air conditioners, etc., to meet the needs of high efficiency, energy saving and miniaturization of electronic components. At present, the main methods for preparing amorphous soft magnetic alloy powder are: 1. Obtained by mechanical crushing and abrasion of amorphous strips; 2. Prepared by atomization process.

[0003] After searching, the Chinese patent number is: CN108183011B which discloses "A method for preparing soft magnetic alloy powder". This document uses molten alloy to be rapidly sprayed through a nozzle onto a rapidly rotating cooling copper roller under constant temperature conditions. The molten alloy encounters the low-temperature cooling copper roller and then rapidly cools to a state close to room temperature, thereby forming an amorphous alloy wire.

[0004] Although this patent can quickly obtain amorphous alloy wire, it still has the following defects: the patent does not have a limiting structure on the cooling copper roller to limit the formation direction of the amorphous alloy wire. On the one hand, the molten alloy is prone to change in shape after being sprayed on the high-speed rotating cooling copper roller, making it difficult to obtain amorphous alloy wire of uniform size. On the other hand, only one side of the molten alloy is in contact with the cooling copper roller, which to a certain extent causes inconsistent cooling levels inside and outside the amorphous alloy wire. Secondly, after the amorphous alloy wire is formed, it still needs to be collected manually, and then subjected to subsequent segmented pressing, coarse grinding and fine grinding. The operation continuity is not strong, which leads to low production efficiency.

[0005] Therefore, we propose an efficient powder making method and powder making system for soft magnetic material processing to address the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the existing practical problems. Compared with the existing technology, a high-efficiency powder making method and a powder making system for soft magnetic material processing are provided. The method is to open multiple groups of strip making grooves on the original cooling roller, and add multiple cooling rings that match the strip making grooves one by one on one side of the cooling roller. During operation, the molten alloy is injected into multiple cooling ring cavities by the injection structure, and gradually cooled to form a strip-shaped alloy strip during the rotation of the cooling roller. The cooperation between the cooling roller and the cooling ring not only plays a guiding and limiting role in the process of the molten alloy forming the alloy strip, and is not easy to cause the alloy strip to undergo morphological changes during the formation process, but also plays a cooling and cooling effect on the inner and outer end surfaces of the alloy strip. After half a circle of rotation and transmission, the pressing and segmenting structure is used for continuous guiding and pressing. The segmented strip alloy directly falls into the grinding structure for multi-stage grinding treatment. The operation continuity is strong, and the production efficiency is greatly improved.

[0007] The purpose of the present invention can be achieved by the following technical solution: A high-efficiency powder making method for soft magnetic material processing, comprising the following steps:

[0008] S1. Smelting pure iron, metallic silicon and electrolytic aluminum ingots according to standard composition to obtain a molten alloy;

[0009] S2, spraying the molten alloy onto the strip-making structure in a horizontal direction through the spraying structure, during which the molten alloy is sprayed into a plurality of strip-making grooves of the cooling roller, and after the molten alloy is injected into the plurality of strip-making grooves, it rotates with the cooling roller and is cooled between the strip-making grooves and the cooling ring to form an alloy strip;

[0010] S3, during the continuous rotation of the cooling roller, the alloy strip rotates half a circle and then is transferred to the pressing segment structure, and is transferred between the upper pressing plate and the lower pressing plate arranged above and below by the pressing roller that rotates synchronously in the opposite direction in contact with the lower end wall of the cooling roller, so that the alloy strip changes from being curved to being straight and is transferred forward, and is cut by the cutting tool to obtain a strip of alloy;

[0011] S4. During the continuous transmission process, the alloy belt pushes the segmented strip alloy to the grinding structure. The process is coarsely ground by the grinding roller. The granular alloy obtained by grinding enters the grinding ring cavity formed by the grinding cylinder and the variable diameter grinding column, and is ground with reduced diameter layer by layer from top to bottom. The fine alloy powder obtained after grinding is collected by the collection box.

[0012] The present invention also proposes an efficient powder making system for processing soft magnetic materials, including an injection structure, a belt making structure, a pressing segmented structure and a grinding structure. The belt making structure includes a cooling roller that is rotatably driven and installed on an operating table. The cooling roller is provided with multiple groups of belt making grooves that are evenly spaced. One side of the cooling roller is provided with multiple cooling rings that correspond to the belt making grooves one by one and are fixed on the operating table. The cooling ring is a semicircular ring structure, and a cooling ring cavity is formed between the cooling ring and the belt making grooves.

[0013] Furthermore, the injection structure includes a feed box fixedly installed on one side of the top of the cooling ring, and a plurality of injection ports connected to the cooling ring cavity port are opened on the feed box. A spray gun is fixedly installed on the other side of the feed box, and the spray gun is connected to the injection port through a docking nozzle.

[0014] Furthermore, the pressing segmented structure includes a pressing assembly and a segmented assembly, wherein the pressing assembly includes a lower pressing plate fixedly mounted on the operating table and horizontally docked with the cooling ring, and one end of the lower pressing plate connected to the cooling ring is provided with a pressing roller rotatably mounted on the operating table and arranged in the opposite direction of rotation of the cooling roller.

[0015] Furthermore, an upper pressing plate movably connected to the end wall of the cooling roller is fixedly installed on the upper end of the lower pressing plate, a pressing space is reserved between the upper pressing plate and the lower pressing plate, and a plurality of guide protrusions matching the belt making grooves one by one are fixedly connected to the end wall of the upper pressing plate close to the cooling roller, and the plurality of guide protrusions are embedded in the inner wall of the belt making groove.

[0016] Furthermore, the segmentation assembly includes a U-shaped frame fixed on the operating table and corresponding to the end position of the lower pressing plate. A cutting tool that can move in the vertical direction is fixedly installed on the U-shaped frame through a pair of electric push cylinders. The end wall of the lower pressing plate located outside the upper pressing plate is provided with a cutting groove corresponding to the cutting tool.

[0017] Furthermore, the grinding structure includes a coarse grinding component and a fine grinding component distributed up and down, the coarse grinding component includes a grinding box fixedly mounted on the operating table and connected to the end of the lower pressing plate, a grinding roller is rotatably installed in the grinding box, a grinding space reserved between the grinding roller and the grinding roller is opened inside the grinding box, a filter table is provided at the bottom of the grinding space, a blanking box connected to the filter table is fixedly mounted at the bottom of the grinding box, the fine grinding component includes a pair of grinding cylinders fixed at the bottom of the blanking box and connected thereto, a variable diameter grinding column is rotatably installed inside the grinding cylinder.

[0018] Furthermore, a collecting box located at the bottom end of a pair of grinding cylinders is provided under the operating table, a driving box for rotationally driving a pair of variable-diameter grinding columns is fixedly installed on the top of the collecting box, and a material guide fan for rotationally guiding the variable-diameter grinding columns is fixedly installed on the top of the driving box.

[0019] Furthermore, the variable diameter grinding column includes main grinding columns and conical transition columns which are staggered up and down. The diameters of the main grinding columns gradually increase from top to bottom, and the diameters of the upper and lower ends of the conical transition columns are respectively consistent with the diameters of the main grinding columns which are distributed up and down.

[0020] Furthermore, a tapered column which is narrow at the top and wide at the bottom is fixedly connected to the top of the main grinding column, a positioning frame is rotatably sleeved on the tapered column, and the positioning frame is fixedly installed on the inner wall of the top of the grinding cylinder.

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] The present invention is to open a plurality of strip-making grooves on the original cooling roller, and to add a plurality of cooling rings fixedly installed and matched with the strip-making grooves one by one on one side of the cooling roller, and a cooling ring cavity is formed between the cooling ring and the strip-making groove. During operation, the molten alloy is injected into the plurality of cooling ring cavities by the injection structure, and gradually cooled to form a strip-shaped alloy strip during the rotation of the cooling roller. The cooperation between the cooling roller and the cooling ring not only plays a guiding and limiting role in the process of the molten alloy forming the alloy strip, and is not easy to cause the morphological change of the alloy strip during the formation process, but also plays a cooling and lowering effect on the inner and outer end surfaces of the alloy strip. After being rotated and transmitted by half a circle, it is continuously guided and pressed and segmented by the pressing and segmenting structure, and the segmented strip alloy directly falls into the grinding structure for multi-stage grinding treatment. Compared with the existing ones, the operation continuity is strong, and the production efficiency is greatly improved. The fine grinding assembly in this scheme consists of variable-diameter grinding columns and grinding cylinders distributed inside and outside. The variable-diameter grinding columns are rotatably installed inside the grinding cylinder, and the variable-diameter grinding columns include main grinding columns and conical transition columns that are staggered up and down. The diameters of the multiple main grinding columns gradually increase from top to bottom. The granular alloy obtained by the preliminary grinding of the grinding roller is diverted through the blanking box and introduced into a pair of grinding cylinders. As the diameters of the multiple main grinding columns distributed up and down gradually increase, the width of the grinding annular cavity formed between the multiple variable-diameter grinding columns and the grinding cylinder gradually decreases, which not only expands the grinding surface, but also plays a role of graded grinding layer by layer, effectively improving the grinding effect. Description of the drawings

[0023] Figure 1 It is a work flow chart of the present invention;

[0024] Figure 2 It is a front structural schematic diagram of the present invention;

[0025] Figure 3 It is a schematic diagram of the back structure of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure when the injection structure and the cooling ring of the present invention are separated;

[0027] Figure 5 It is a cross-sectional view of the junction of the injection structure and the belt making of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the present invention when the cooling roller is removed;

[0029] Figure 7 It is a schematic structural diagram of the present invention when the upper pressing plate is lifted upward after the cooling roller is removed;

[0030] Figure 8 It is a schematic structural diagram of the combination of the pressing assembly and the cooling ring of the present invention;

[0031] Fig. 9It is a structural schematic diagram of the combination of the pressing segmented structure and the grinding structure of the present invention;

[0032] Fig.10 is a cross-sectional view of the grinding structure of the present invention;

[0033] Fig.11 It is a schematic structural diagram of the variable diameter grinding column of the present invention;

[0034] Fig.12 It is a cross-sectional view of the present invention when working;

[0035] Fig.13 It is a partial cross-sectional view of the present invention when it is working;

[0036] Fig.14 It is a cross-sectional view of the fine grinding assembly of the present invention when it is working.

[0037] Description of the numbers in the figure:

[0038] 1. Operating table; 2. Cooling roller; 201. Belt making groove; 3. Cooling ring; 4. Injection structure; 41. Feed box; 42. Docking nozzle; 43. Spray gun; 5. Lower pressing plate; 501. Cutting groove; 6. Upper pressing plate; 601. Guide convex piece; 602. Pressing space; 7. Pressing roller; 8. Cutting tool; 9. Electric push cylinder; 10. Grinding box; 101. Filter table; 11. Grinding roller; 12. Blanking box; 13. Grinding cylinder; 14. Collecting box; 15. Material guide fan; 16. Drive box; 17. Variable diameter grinding column; 171. Main grinding column; 172. Conical transition column; 173. Positioning frame; 18. Alloy belt. DETAILED DESCRIPTION

[0039] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0040] Example 1: The present invention discloses a high-efficiency powder making method for processing soft magnetic materials. Figure 1-2 , including the following steps:

[0041] S1. Smelting pure iron, metallic silicon and electrolytic aluminum ingots according to standard composition to obtain a molten alloy;

[0042] S2, spraying the molten alloy onto the strip-making structure in a horizontal direction through the spraying structure 4, and spraying the molten alloy into the multiple strip-making grooves 201 of the cooling roller 2. After the molten alloy is injected into the multiple strip-making grooves 201, it rotates with the cooling roller 2, and is cooled between the strip-making grooves 201 and the cooling ring 3 to form an alloy strip 18;

[0043] S3, during the continuous rotation of the cooling roller 2, the alloy strip 18 rotates half a circle and then is transferred to the pressing segment structure, and is transferred to between the upper pressing plate 6 and the lower pressing plate 5 arranged above and below by the pressing roller 7 which is in contact with the lower end wall of the cooling roller 2 and rotates synchronously in the opposite direction, so that the alloy strip 18 is changed from curved to straight and is transferred forward and pressed synchronously, and then is cut by the cutting tool 8 arranged at the outer end of the lower pressing plate 5 to obtain a strip alloy;

[0044] S4, the alloy belt 18 pushes the segmented strip alloy to the grinding structure during continuous transmission. The alloy is roughly ground by the grinding roller 11, and the granular alloy obtained by grinding enters the grinding ring cavity formed by the grinding cylinder 13 and the variable diameter grinding column 17, and is ground by reducing the diameter layer by layer from top to bottom. The fine alloy powder obtained after fine grinding is collected by the collection box 14.

[0045] Embodiment 2: The present invention also proposes a high-efficiency powder making system for processing soft magnetic materials, comprising a spraying structure 4, a belt making structure, a pressing segment structure and a grinding structure.

[0046] See also Figure 2 to Figure 5 The belt making structure includes a cooling roller 2 which is rotatably driven and mounted on an operating table 1. A plurality of belt making grooves 201 with equal spacing are provided on the cooling roller 2. A plurality of cooling rings 3 which are respectively engaged with the belt making grooves 201 and fixed on the operating table 1 are provided on one side of the cooling roller 2. The cooling ring 3 is a semicircular ring structure. A cooling ring cavity is formed between the cooling ring 3 and the belt making grooves 201. The thickness of the cooling ring cavity is preferably 1 to 2 mm, and the width of the cooling ring cavity is 6 to 8 mm. That is, the thickness of the formed 18 is 1 to 2 mm, and the width is 6 to 8 mm. In this embodiment, the thickness of the cooling ring cavity is 1.5 mm, and the width of the cooling ring cavity is 7 mm.

[0047] The injection structure 4 includes a feed box 41 fixedly installed on one side of the top end of the cooling ring 3, and a plurality of injection ports connected to the cooling ring cavity port are opened on the feed box 41. A spray gun 43 is fixedly installed on the other side of the feed box 41, and the spray gun 43 is connected to the injection port through a docking nozzle 42. The injection structure 4 is used to spray molten alloy into the strip making groove 201. Since the cooling roller 2 is in a rotating state, the molten alloy injected into the cooling ring cavity is gradually cooled to form a strip-shaped alloy strip 18 during the rotation of the cooling roller 2. The cooling roller 2 and the cooling ring 3 cooperate not only to guide and limit the process of the molten alloy forming the alloy strip 18, and it is not easy to cause the alloy strip 18 to undergo morphological changes during the formation process, but also to cool the inner and outer end surfaces of the alloy strip 18, and the cooling speed is fast. In addition, the cooling ring 3 plays a role of outer covering to prevent the alloy strip 18 from contacting with the outside air during the cooling process, which greatly reduces the high-temperature oxidation time, and is transferred to the pressing segmented structure after half a circle of rotation.

[0048] See also Figure 6 to Figure 9 The pressing segmented structure includes a pressing assembly and a segmented assembly, wherein the pressing assembly includes a lower pressing plate 5 fixedly mounted on the operating table 1 and horizontally connected to the cooling ring 3, and one end of the lower pressing plate 5 connected to the cooling ring 3 is provided with a pressing roller 7 rotatably mounted on the operating table 1 and arranged in the opposite direction of the rotation direction of the cooling roller 2, and the left and right ends of the pressing roller 7 are movably connected with the lower pressing plate 5 and the cooling ring 3 respectively, and the upper end surfaces of the lower pressing plate 5 and the pressing roller 7 are flush, and the higher end surface is higher than the height of the upper end surface of the bottom end of the cooling ring 3;

[0049] The upper end of the lower pressing plate 5 is fixedly installed with an upper pressing plate 6 that is movably connected to the end wall of the cooling roller 2. A pressing space 602 is reserved between the upper pressing plate 6 and the lower pressing plate 5. The thickness of the pressing space 602 is slightly smaller than the thickness of the cooling ring cavity. A plurality of guide convex pieces 601 that match the strip making groove 201 are fixedly connected to the end wall of the upper pressing plate 6 close to the cooling roller 2. The plurality of guide convex pieces 601 are embedded in the inner wall of the strip making groove 201. When the alloy strip 18 is transferred to the bottom end of the cooling ring 3, the pressing roller 7 and the cooling roller 2 are connected to each other. 2 is transferred to the pressing space 602 between the upper pressing plate 6 and the lower pressing plate 5, and under the guiding action of the guide convex piece 601, the alloy strip 18 does not rotate upward with the cooling roller 2 after rotating half a circle, but moves outward along the pressing space 602 under the guiding action of the guide convex piece 601 and the lower pressing plate 5, so that the alloy strip 18 is changed from curved to straight, and the pressing process is completed in the process, thereby improving the density and strength of the alloy strip 18, improving the particle distribution, facilitating the subsequent crushing and grinding, and reducing the loss of powder;

[0050] See also Fig. 9The segmented assembly includes a U-shaped frame fixed on the operating table 1 and corresponding to the end position of the lower pressing plate 5. A cutting tool 8 that can move in the vertical direction is fixedly installed on the U-shaped frame through a pair of electric push cylinders 9. The end wall of the lower pressing plate 5 located outside the upper pressing plate 6 is provided with a cutting groove 501 corresponding to the cutting tool 8. When the alloy strip 18 is transmitted to the cutting groove 501, it is cut by the cutting tool 8 that moves up and down to form a strip alloy after cutting. The length of the strip alloy is preferably 10 to 15 mm. In this embodiment, the length of the strip alloy is 12 mm.

[0051] Embodiment 3: Based on Embodiments 1 and 2, this embodiment optimizes the grinding structure as follows:

[0052] See also Figures 9 to 14 The grinding structure includes a coarse grinding component and a fine grinding component which are distributed up and down. The coarse grinding component includes a grinding box 10 which is fixedly mounted on the operating table 1 and connected to the end of the lower pressing plate 5. A grinding roller 11 is installed in the grinding box 10 for rotational driving. A grinding space reserved between the grinding roller 11 is provided inside the grinding box 10. A filter station 101 is provided at the bottom of the grinding space. The grinding space is extended and opened upwardly and obliquely toward one side of the end of the lower pressing plate 5, so that the cut strip alloy falls into the grinding space under the push of the alloy belt 18. The particle diameter of the granular alloy obtained by the preliminary grinding of the grinding roller 11 is preferably in the range of 1 to 1.5 mm.

[0053] A material drop box 12 connected to the filter station 101 is fixedly installed at the bottom of the grinding box 10, and the fine grinding assembly includes a grinding cylinder 13 fixed to the bottom of the material drop box 12 and connected thereto. A material guide groove connected to the filter station 101 and the grinding cylinder 13 is provided inside the material drop box 12, and a variable diameter grinding column 17 is rotatably installed inside the grinding cylinder 13. A collection box 14 located at the bottom of a pair of grinding cylinders 13 is provided below the operating table 1, and a driving box 1 for rotating a pair of variable diameter grinding columns 17 is fixedly installed on the top of the collection box 14. 6. A guide fan 15 for rotationally guiding the variable-diameter grinding column 17 is fixedly installed on the top of the driving box 16. The guide fan 15 is a conical structure that is narrow at the top and wide at the bottom. It shields the driving box 16 and is used to introduce the ground alloy powder into the collecting box 14. A screen for screening can be set at the top of the collecting box 14. The screen is used to screen out alloy powder with unqualified particle size and perform cyclic grinding so that the particle size of the alloy powder finally obtained is preferably in the range of 100 to 160 μm.

[0054] The variable diameter grinding column 17 includes main grinding columns 171 and tapered transition columns 172 which are staggered in the upper and lower parts. The diameters of the main grinding columns 171 gradually increase from top to bottom. The diameters of the upper and lower ends of the tapered transition columns 172 are respectively consistent with the diameters of the main grinding columns 171 which are distributed in the upper and lower parts. The top of the main grinding column 171 located at the top is fixedly connected with a tapered column which is narrow at the top and wide at the bottom. A positioning frame 173 is rotatably sleeved on the tapered column, and the positioning frame 173 is fixedly installed on the inner wall of the top end of the grinding cylinder 13.

[0055] The granular alloy obtained by the preliminary grinding of the grinding roller 11 is diverted into a pair of grinding cylinders 13 through a blanking box 12, and is ground layer by layer from top to bottom during the rotation of the variable-diameter grinding column 17. As the diameters of the multiple main grinding columns 171 distributed above and below gradually increase, the width of the grinding annular cavity formed between the multiple variable-diameter grinding columns 17 and the grinding cylinder 13 gradually decreases, which not only expands the grinding surface, but also plays a role of graded grinding layer by layer, effectively improving the grinding effect.

[0056] In summary, the present invention is to open multiple groups of strip-making grooves 201 on the original cooling roller 2, and add multiple cooling rings 3 fixedly installed and matched with the strip-making grooves 201 on one side of the cooling roller 2, and a cooling ring cavity is formed between the cooling ring 3 and the strip-making grooves 201. During operation, the molten alloy is injected into the multiple cooling ring cavities by the injection structure 4, and gradually cooled to form a strip-shaped alloy strip 18 during the rotation of the cooling roller 2. The cooperation between the cooling roller 2 and the cooling ring 3 not only plays a guiding and limiting role in the process of the molten alloy forming the alloy strip 18, which is not easy to cause the alloy strip 18 to change its shape during the formation process, but also plays a cooling and cooling role on the inner and outer end surfaces of the alloy strip 18.

[0057] After half a circle of rotation and transmission, it is continuously guided and segmented by the pressing segmentation structure. The segmented strip alloy falls directly into the grinding structure for coarse grinding and fine grinding. In the fine grinding process, since the diameters of the multiple main grinding columns 171 distributed up and down gradually increase, the width of the grinding ring cavity formed between the multiple variable-diameter grinding columns 17 and the grinding cylinder 13 gradually decreases, which not only expands the grinding surface, but also plays a role of layer-by-layer graded grinding, effectively improving the grinding effect. Compared with the existing device, it has operational continuity and greatly improves production efficiency.

[0058] The above is only a preferred specific implementation manner of the present invention; but the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved concept of the present invention shall be covered by the protection scope of the present invention.

Claims

1. An efficient powder making system for processing soft magnetic materials, comprising a spraying structure (4), a belt making structure, a pressing segment structure and a grinding structure, characterized in that: The strip-making structure comprises a cooling roller (2) which is rotatably mounted on an operating table (1), the cooling roller (2) being provided with a plurality of strip-making grooves (201) which are distributed at equal intervals, a plurality of cooling rings (3) which are arranged on one side of the cooling roller (2) and which are corresponding to the strip-making grooves (201) and fixed on the operating table (1), the cooling ring (3) being a semicircular ring structure, and a cooling ring cavity being formed between the cooling ring (3) and the strip-making grooves (201); The pressing segmented structure comprises a pressing component and a segmented component, wherein the pressing component comprises a lower pressing plate (5) fixedly mounted on an operating table (1) and horizontally connected to a cooling ring (3); an end of the lower pressing plate (5) opposite to the cooling ring (3) is provided with a pressing roller (7) rotatably mounted on the operating table (1) and arranged in the opposite direction of rotation to the cooling roller (2); an upper pressing plate (6) movably connected to an end wall of the cooling roller (2) is fixedly mounted on the upper end of the lower pressing plate (5); a pressing space (602) is reserved between the upper pressing plate (6) and the lower pressing plate (5); a plurality of guide protrusions (601) matching one by one with the belt making groove (201) are fixedly connected to the end wall of the upper pressing plate (6) close to the cooling roller (2); and the plurality of guide protrusions (601) are embedded in the inner wall of the belt making groove (201); The grinding structure comprises a coarse grinding component and a fine grinding component which are arranged in an upper and lower manner. The coarse grinding component comprises a grinding box (10) which is fixedly mounted on an operating table (1) and is connected to the end of a lower pressing plate (5). A grinding roller (11) is rotatably mounted in the grinding box (10). A grinding space reserved between the grinding roller (11) and the grinding box (10) is provided inside the grinding box (10). A filter table (101) is provided at the bottom of the grinding space. A blanking box (12) which is connected to the filter table (101) is fixedly mounted at the bottom end of the grinding box (10). The fine grinding component comprises a pair of grinding cylinders (13) which are fixedly mounted at the bottom end of the blanking box (12) and are connected thereto. A variable diameter grinding cylinder (13) is rotatably mounted inside the grinding cylinder (13). A grinding column (17), wherein a collecting box (14) is provided below the operating table (1) and is located at the bottom end of a pair of grinding cylinders (13); a driving box (16) for rotationally driving a pair of variable-diameter grinding columns (17) is fixedly installed on the top of the collecting box (14); a material guide fan (15) for rotationally guiding the variable-diameter grinding columns (17) is fixedly installed on the top of the driving box (16); the variable-diameter grinding columns (17) include main grinding columns (171) and conical transition columns (172) that are staggered in upper and lower directions; the diameters of the plurality of main grinding columns (171) gradually increase from top to bottom; and the diameters of the upper and lower ends of the conical transition columns (172) are respectively consistent with the diameters of the main grinding columns (171) that are arranged in an upper and lower direction.

2. The high-efficiency powder making system for soft magnetic material processing according to claim 1, characterized in that: The injection structure (4) comprises a feed box (41) fixedly mounted on one side of the top end of the cooling ring (3), the feed box (41) being provided with a plurality of injection ports connected to the cooling ring cavity ports, a spray gun (43) being fixedly mounted on the other side of the feed box (41), and the spray gun (43) being arranged in contact with the injection port via a docking nozzle (42).

3. The high-efficiency powder making system for soft magnetic material processing according to claim 1, characterized in that: The segment assembly comprises a U-shaped frame fixed on the operating table (1) and corresponding to the end position of the lower pressing plate (5); a cutting tool (8) movable in a vertical direction is fixedly mounted on the U-shaped frame via a pair of electric push cylinders (9); and a cutting groove (501) corresponding to the cutting tool (8) is formed on the end wall of the lower pressing plate (5) located outside the upper pressing plate (6).

4. The high-efficiency powder making system for soft magnetic material processing according to claim 1, characterized in that: A conical column that is narrow at the top and wide at the bottom is fixedly connected to the top of the main grinding column (171) located at the top, a positioning frame (173) is rotatably sleeved on the conical column, and the positioning frame (173) is fixedly installed on the inner wall of the top end of the grinding cylinder (13).

5. A high-efficiency powder making method for processing soft magnetic materials, using a high-efficiency powder making system for processing soft magnetic materials as claimed in any one of claims 1 to 4, characterized in that: The steps include: S1. Smelting pure iron, metallic silicon and electrolytic aluminum ingots according to standard composition to obtain a molten alloy; S2, spraying the molten alloy onto the strip-making structure in a horizontal direction through the spraying structure (4), during which the molten alloy is sprayed into a plurality of strip-making grooves (201) of the cooling roller (2), and after the molten alloy is injected into the plurality of strip-making grooves (201), it rotates with the cooling roller (2) and is cooled between the strip-making grooves (201) and the cooling ring (3) to form an alloy strip (18); S3, the alloy strip (18) is transferred to the pressing segment structure after rotating half a circle, and is transferred between the upper pressing plate (6) and the lower pressing plate (5) arranged above and below by the pressing roller (7) which is in contact with the lower end wall of the cooling roller (2) and rotates synchronously in the opposite direction, so that the alloy strip (18) is pressed and transferred forward from the curved side to the straight side, and is cut by the cutting tool (8) to obtain a strip of alloy; S4. The alloy belt (18) pushes the segmented strip alloy to the grinding structure during continuous conveying. The alloy is roughly ground by the grinding roller (11). The granular alloy obtained by grinding enters the grinding ring cavity formed by the grinding cylinder (13) and the variable diameter grinding column (17), and is ground layer by layer from top to bottom. The fine alloy powder obtained after fine grinding is collected by the collection box (14).

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