Processing method of tile-shaped spliced magnetic steel

Abstract

The invention discloses a processing method of tile-shaped spliced magnetic steel, which comprises the following steps: selecting a qualified blank, performing rough machining to obtain an initial magnetic sheet, performing a grain boundary diffusion process on a non-magnetic orientation side surface of the initial magnetic sheet, performing finish machining to obtain a spliced magnetic sheet, aligning and adhering the spliced magnetic sheet along the width direction of the spliced magnetic sheet to form a spliced magnetic block, curing, and removing glue, thereby obtaining the tile-shaped spliced magnetic steel. The spliced magnetic blocks are bonded in the thickness direction of the spliced magnetic sheets to form a tile-shaped magnet, curing and degumming are conducted, rough machining is conducted on the inner side face and the outer side face of the tile-shaped magnet, finish machining is conducted on the inner side face and the outer side face of the tile-shaped magnet, chamfering and surface treatment are conducted, and the tile-shaped magnetic steel is formed. According to the processing method of the tile-shaped spliced magnetic steel, the square magnetic steel is spliced into the tile magnetic steel, so that the formed magnetic steel has the advantages of the square magnetic steel and the tile magnetic steel at the same time.

Description

Technical Field

[0001] The invention relates to the field of motor magnetic steel production, in particular to a processing method for tile-shaped spliced ​​magnetic steel. Background Art

[0002] Motor losses increase exponentially with motor speed. High losses cause motor efficiency to drop sharply. To achieve high efficiency, various loss problems need to be solved, such as increasing the intrinsic coercive force of magnetic steel to achieve high temperature resistance; or using a process method of splicing magnetic blocks to reduce eddy current losses.

[0003] Compared with square sheet magnets, traditional tile magnets have fewer pole pairs, better airtightness and higher efficiency. However, the disadvantages of tile magnets are also very obvious. Due to the existence of curvature R, grain boundary diffusion coating is a spraying process, which is more complicated. The diffusion heat treatment product has an unstable effect in preventing deformation, and the production is difficult. In addition, the consistency and stability of the quality are not as good as square sheet magnets. In actual applications, tile magnets or square sheet magnets are often selected according to the needs of the motor. However, because tile magnets are a common type of surface-mounted rotors or stators, they are often selected for high-power motors. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a method for processing tile-shaped spliced ​​magnetic steel by splicing square magnetic steel into tile magnetic steel, so that the formed magnetic steel has the advantages of both square magnetic steel and tile magnetic steel.

[0005] The technical solution adopted by the present invention to solve the above problem is a method for processing tile-shaped spliced ​​magnetic steel, and the steps are as follows: S1: selecting bad materials with qualified magnetic parameters and roughly processing them into initial magnetic sheets, wherein the initial magnetic sheets are in the shape of square sheets or parallelograms; S2: taking the non-magnetic oriented side of the initial magnetic sheet and performing a grain boundary diffusion process; S3: finishing the initial magnetic sheet to form a spliced ​​magnetic sheet; S4: multiple cleaning of the surface of the spliced ​​magnetic sheets; S5: In a dust-free workshop, align and glue the spliced ​​magnetic sheets along the width direction of the spliced ​​magnetic sheets to form a spliced ​​magnetic block; S6: high temperature curing of the spliced ​​magnetic blocks; S7: removing glue from the spliced ​​magnetic blocks; S8: multiple cleaning of the surface of the spliced ​​magnetic blocks; S9: In a dust-free workshop, glue the spliced ​​magnetic blocks along the thickness direction of the spliced ​​magnetic sheets to form a tile-shaped magnet that is high in the middle and low at both ends; S10: high temperature curing of the tile-shaped magnet; S11: removing glue from the tile-shaped magnet; S12: performing rough machining on the inner side and the outer side of the tile-shaped magnet so that the inner side and the outer side of the tile-shaped magnet form an initial arc shape; S13: performing fine processing on the inner side and the outer side of the tile-shaped magnet so that the inner side and the outer side of the tile-shaped magnet form a smooth arc; S14: chamfering and surface finishing of the tile-shaped magnet; S15: Surface spraying treatment, forming tile-shaped magnetic steel.

[0006] Compared with the prior art, the advantages of the present invention are as follows: in the forming process, through step S1, the square-shaped initial magnetic sheet is first processed, and the processing difficulty of the initial magnetic sheet is low; through step S2, the magnetic properties of the material, especially the intrinsic coercive force, can be greatly enhanced by using less rare earth metal through the grain boundary diffusion process; through step S3, the initial magnetic sheet is finely processed into a spliced ​​magnetic sheet, the quality of the spliced ​​magnetic sheet is uniform and the consistency is high, and in the state of the spliced ​​magnetic sheet, the magnetic property consistency of the square sheet or parallelogram-shaped spliced ​​magnetic sheet can be guaranteed; through steps S4-S7, the spliced ​​magnetic sheets are bonded into a spliced ​​magnetic block, and in the state of the spliced ​​magnetic block, the quality of the spliced ​​magnetic sheet is uniform, The characteristics of high consistency, at the same time, because the spliced ​​magnetic blocks are formed by splicing, the eddy current loss is reduced during use, which can improve the working efficiency of the motor; through S8-S11, the spliced ​​magnetic blocks are bonded into tile-shaped magnets. Because the tile-shaped magnets are formed by splicing the spliced ​​magnetic blocks, the eddy current loss is reduced during use, which can improve the working efficiency of the motor; through steps S12-S15, the tile-shaped magnets are finally corrected and processed into tile-shaped magnetic steels with regular shapes and smooth surfaces. The final tile-shaped magnetic steel can reduce the consistency of the quality of traditional tile-shaped magnetic steels and the shortcomings of poor stability, and maintain the advantages of the original tile-shaped magnetic steels to form high-quality tile-shaped magnetic steels.

[0007] As an improvement of the present invention, a diffusion source containing Dy and Tb is used for grain boundary diffusion. Through the improvement, the magnetic properties are greatly improved.

[0008] As an improvement of the present invention, in step S2, step S2.1 is included: performing a simulated aging test on the initial magnetic sheet, at 180°C×2H, a half-open circuit 1mm iron plate, and an attenuation of <3%, to verify that the aging test meets the standard. Through the improvement, in the magnet aging test, the role of the half-open circuit iron plate is mainly to provide a partially closed magnetic circuit. The half-open circuit test method is to place the magnet on the iron plate, one orientation surface of the magnet is in close contact with the iron plate, and the other orientation surface is not in contact with the iron plate. This setting allows a part of the magnetic lines of force of the magnet to form a closed loop through the iron plate, while the other part of the magnetic lines of force are open to the air, making the test environment closer to actual use conditions, because many magnets are not completely closed magnetic circuits in actual applications. In this way, the magnetic flux attenuation of the magnet in actual use can be more realistically evaluated.

[0009] As an improvement of the present invention, in steps S6 and S10, the following steps are included: A1: Continuously fill nitrogen as protective gas during the curing process; A2: After the curing is completed, the glue seam performance parameters are tested. Through the improvement, during step A1, the high temperature can be prevented from causing oxidation to the spliced ​​magnetic blocks and tile-shaped magnets; and through step A2, the curing quality of the glue can be inspected to ensure the curing quality, thereby ensuring the molding quality of the tile-shaped magnetic steel.

[0010] As an improvement of the present invention, after step S7, step S7.1 is included: the spliced ​​magnetic blocks are subjected to corresponding wire cutting according to the curvature of the tile-shaped magnet; in step S9, step S9.1 is included: the spliced ​​magnetic blocks are bonded with an adhesive gauge. Through the improvement, through the design of step S7.1, the processing allowance of steps S12 and S13 can be reduced, thereby reducing the processing strength of steps S12 and S13, avoiding the risk of poor processing such as corner burst, and even saving a large amount of material; through the design of step S9.1, during the process of splicing the tile-shaped magnet, although the contact areas between the connected spliced ​​magnetic blocks are different, the force is uniform, thereby ensuring the uniformity of the tile-shaped magnet during molding and ensuring the quality of the final tile-shaped magnetic steel.

[0011] As an improvement of the present invention, the wire cutting slope of the spliced ​​magnetic blocks on both sides is equal to the tangent slope at the corresponding position. Through the improvement, it is possible to avoid excessive cutting during wire cutting, which would cause the spliced ​​magnetic blocks to be scrapped. At the same time, in steps S12 and S13, processing comparison can be performed to avoid arc processing errors in steps S12 and S13.

[0012] As an improvement of the present invention, the viscose through gauge is provided with a tile-shaped channel that matches the arched magnetic steel, the outer side of the tile-shaped channel is arc-shaped and is used to abut against the outer ends of the spliced ​​magnetic blocks, and the inner side of the tile-shaped channel is provided with abutment columns, which are used to abut against the inner side of the spliced ​​magnetic blocks. Through the improvement, the viscose through gauge is used to limit the spliced ​​magnetic blocks, thereby ensuring the splicing quality of the tile-shaped magnets.

[0013] As an improvement of the present invention, the bottom ends of the splicing magnetic blocks at both ends are arranged horizontally and abut against the inner bottom surface of the tile-shaped channel. Through the improvement, the placement stability of the splicing magnetic blocks at both ends is ensured.

[0014] As an improvement of the present invention, in step S13, the rough-machined tile-shaped magnet will be placed in a fine-machined mounting groove, and the surface of the tile-shaped magnet will be fine-machined using a 200-300 mesh diamond grinding wheel. Through the improvement, the processing stability of the outer side arc and the roughness of the processed surface are guaranteed.

[0015] As an improvement of the present invention, in step S14, glass beads with a mesh size of 100 to 500 are used and sandblasting is performed at a pressure of 0.6 to 1 MPa. Through the improvement, the splicing marks of the tile-shaped magnetic steel are covered and the appearance quality of the tile-shaped magnetic steel is improved. At the same time, the glass beads can make the surface of the tile-shaped magnetic steel smooth and improve the bonding strength of the coating, which is beneficial to the operation of the tile-shaped magnetic steel in the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the spliced ​​magnetic blocks of the present invention.

[0017] Figure 2 It is a schematic diagram of the structure of a tile-shaped magnet according to an embodiment of the present invention.

[0018] Figure 3 It is a schematic diagram of the tile-shaped magnetic steel structure of the present invention.

[0019] Figure 4 It is a schematic diagram of the structure of the viscose gauge of the present invention.

[0020] Figure 5 It is a schematic diagram of the connection structure between the spliced ​​magnetic blocks and the adhesive through gauge according to the second embodiment of the present invention.

[0021] Figure 6 It is a schematic diagram of the connection structure between the tile-shaped magnet and the precision-machined mounting groove of the present invention.

[0022] 1. Splicing magnetic sheets, 2. Splicing magnetic blocks, 3. Tile-shaped magnets, 4. Tile-shaped magnetic steel, 5. Glue gauge, 5.1. Tile-shaped channel, 5.2. Abutment column, 6. Fine-machined installation groove. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0024] Embodiment 1: like Figure 1-3 , Figure 6 As shown, a method for processing tile-shaped spliced ​​magnetic steel, the steps are as follows: S1: Select bad material 48H with qualified magnetic parameters, ensure the remanence (Br) ≥ 13.8KGs, intrinsic coercive force (Hcj) ≥ 17 KOe, and roughly process it into initial magnetic sheets. The initial magnetic sheets are in the shape of square sheets with a size of not less than 15.26mm×4.1mm×28.5mm (thickness×width×length), and magnetize along the length direction; S2: Take the non-magnetic orientation side of the initial magnetic sheet for grain boundary diffusion process, and use the diffusion source containing Dy and Tb for grain boundary diffusion to ensure Hcj improvement and at the same time ensure that the Br floating range does not exceed 1%; S2.1: Conduct a simulated aging test on the initial magnetic sheet at 180°C × 2H, half-open circuit 1mm iron plate, and attenuation <3%, to verify that the aging test meets the standard.

[0025] S3: The initial magnetic sheet is finely processed to form a spliced ​​magnetic sheet 1, which is processed by a vertical double-sided grinding machine, and the 4.1mm grinding width is reduced to 4±0.005mm, and the shape and position tolerances of flatness and parallelism are both 0.01mm, and there are no defects in appearance. S4: performing multiple cleaning on the surface of the spliced ​​magnetic sheet 1, firstly performing ultrasonic cleaning, and then wiping the surface with anhydrous ethanol; S5: In a dust-free workshop, ensure the cleanliness, humidity and humidity requirements, align and bond the spliced ​​magnetic sheets 1 along the width direction of the spliced ​​magnetic sheets 1 with glue, select an appropriate tool fixture, and splice several spliced ​​magnetic sheets 1 into a spliced ​​magnetic block 2; S6: Perform high temperature curing on the spliced ​​magnetic block 2, the baking temperature is 175±5℃, the baking time is 2-3 hours, and the quality of the spliced ​​product is tested, such as the thickness of the glue layer, shear force, glue seam and other requirements; S6.1: Continuously fill nitrogen as protective gas during the curing process; S6.2: After curing is completed, test the performance parameters of the adhesive joint; S7: removing glue overflow from the surface of the spliced ​​magnetic block 2 by using a double-sided grinding process or a laser glue removal process; S8: performing multiple cleaning on the surface of the spliced ​​magnetic block 2, firstly performing ultrasonic cleaning, and then wiping the surface with anhydrous ethanol; S9: In a dust-free workshop, ensure the cleanliness, humidity and humidity requirements, glue the spliced ​​magnetic blocks 2 along the thickness direction of the spliced ​​magnetic sheets 1 with glue, select suitable tools and fixtures, and splice several spliced ​​magnetic blocks 2 into a tile-shaped magnet 3 with a high middle and low ends; S10: high temperature curing of the tile-shaped magnet 3, the baking temperature is 175±5°C, the baking time is 2-3 hours, and the quality of the spliced ​​product is tested, such as the thickness of the glue layer, shear force, glue seam and other requirements; S10.1: Continuously fill nitrogen as protective gas during the curing process; S10.2: After curing is completed, test the performance parameters of the adhesive joint; S11: removing glue overflow from the surface of the tile-shaped magnet 3 by using a double-sided grinding process or a laser glue removal process; S12: using a CNC engraving machine to perform preliminary contour trimming on the tile-shaped magnet 3, especially rough machining of the contour of the inner side surface and the contour of the outer side surface, so that the inner side surface and the outer side surface of the tile-shaped magnet 3 form an initial arc; S13: using a surface grinder to grind and fine-process the tile-shaped magnet 3, especially fine-processing the inner side surface and fine-processing the outer side surface by fine-processing the mounting groove 6, so that the inner side surface and the outer side surface of the tile-shaped magnet 3 meet the shape and position tolerance and form a smooth arc; S14: performing chamfering and surface finishing treatment on the tile-shaped magnet 3; S15: The surface is sprayed with epoxy coating and a tile-shaped magnetic steel 4 is formed.

[0026] In step S2, 10 groups of samples are taken for testing, as shown in Table 1. Table 1 Sample parameters after grain boundary diffusion In steps S6 and S10, 5 groups of samples are taken for testing, as shown in Table 2. Table 2 High temperature curing sample parameters Embodiment 2: like Figure 1 , Figure 3-6 As shown, a method for processing tile-shaped spliced ​​magnetic steel, the steps are as follows: S1: Select bad material 48H with qualified magnetic parameters, ensure the remanence (Br) ≥ 13.8KGs, intrinsic coercive force (Hcj) ≥ 17 KOe, and roughly process it into initial magnetic sheets. The initial magnetic sheets are parallelogram-shaped with dimensions of not less than 15.26mm×4.1mm×28.5mm (thickness×width×length), and magnetize along the length direction; S2: Take the non-magnetic orientation side of the initial magnetic sheet for grain boundary diffusion process, and use the diffusion source containing Dy and Tb for grain boundary diffusion to ensure Hcj improvement and at the same time ensure that the Br floating range does not exceed 1%; S2.1: Conduct a simulated aging test on the initial magnetic sheet at 180°C × 2H, half-open circuit 1mm iron plate, and attenuation <3%, to verify that the aging test meets the standard.

[0027] S3: The initial magnetic sheet is finely processed to form a spliced ​​magnetic sheet 1, which is processed by a vertical double-sided grinding machine, and the 4.1mm grinding width is reduced to 4±0.005mm, and the shape and position tolerances of flatness and parallelism are both 0.01mm, and there are no defects in appearance. S4: performing multiple cleaning on the surface of the spliced ​​magnetic sheet 1, firstly performing ultrasonic cleaning, and then wiping the surface with anhydrous ethanol; S5: In a dust-free workshop, ensure the cleanliness, humidity and humidity requirements, align and bond the spliced ​​magnetic sheets 1 along the width direction of the spliced ​​magnetic sheets 1 with glue, select an appropriate tool fixture, and splice several spliced ​​magnetic sheets 1 into a spliced ​​magnetic block 2; S6: Perform high temperature curing on the spliced ​​magnetic block 2, the baking temperature is 175±5℃, the baking time is 2-3 hours, and the quality of the spliced ​​product is tested, such as the thickness of the glue layer, shear force, glue seam and other requirements; S6.1: Continuously fill nitrogen as protective gas during the curing process; S6.2: After curing is completed, test the performance parameters of the adhesive joint; S7: removing glue overflow from the surface of the spliced ​​magnetic block 2 by using a double-sided grinding process or a laser glue removal process; S7.1: Perform corresponding wire cutting on the spliced ​​magnetic blocks 2 according to the curvature of the tile-shaped magnet 3, and keep one or two spliced ​​magnetic blocks 2 in the middle unchanged. The farther away from the spliced ​​magnetic block 2 in the middle, the greater the wire cutting slope of the spliced ​​magnetic blocks 2 on both sides is, and the wire cutting slope of the spliced ​​magnetic blocks 2 on both sides is equal to the tangent slope at the corresponding position; S8: performing multiple cleaning on the surface of the spliced ​​magnetic block 2, firstly performing ultrasonic cleaning, and then wiping the surface with anhydrous ethanol; S9: In a dust-free workshop, ensure the cleanliness, humidity and humidity requirements, glue the spliced ​​magnetic blocks 2 along the thickness direction of the spliced ​​magnetic sheets 1 with glue, select suitable tools and fixtures, and splice several spliced ​​magnetic blocks 2 into a tile-shaped magnet 3 with a high middle and low ends; S9.1: Adhesive gauge 5 is used to adhere the spliced ​​magnetic block 2, wherein the adhesive gauge 5 is provided with a tile-shaped channel 5.1 that matches the arched magnetic steel, the outer side of the tile-shaped channel 5.1 is arc-shaped and is used to abut against the outer ends of the spliced ​​magnetic block 2, and the inner side of the tile-shaped channel 5.1 is provided with abutment posts 5.2, and the abutment posts 5.2 are used to abut against the inner side of the spliced ​​magnetic block 2, and the bottom ends of the spliced ​​magnetic blocks (2) at both ends are arranged horizontally and abut against the inner bottom surface of the tile-shaped channel (5.1); S10: high temperature curing of the tile-shaped magnet 3, the baking temperature is 175±5°C, the baking time is 2-3 hours, and the quality of the spliced ​​product is tested, such as the thickness of the glue layer, shear force, glue seam and other requirements; S10.1: Continuously fill nitrogen as protective gas during the curing process; S10.2: After curing is completed, test the performance parameters of the adhesive joint; S11: removing glue overflow from the surface of the tile-shaped magnet 3 by using a double-sided grinding process or a laser glue removal process; S12: using a CNC engraving machine to perform preliminary contour trimming on the tile-shaped magnet 3, especially rough machining of the contour of the inner side surface and the contour of the outer side surface, so that the inner side surface and the outer side surface of the tile-shaped magnet 3 form an initial arc; S13: Using a surface grinder to grind and fine-process the tile-shaped magnet 3, using a 200-300 mesh diamond grinding wheel to fine-process the inner side surface and fine-process the outer side surface in combination with the fine-processing installation groove 6, so that the inner side surface and the outer side surface of the tile-shaped magnet 3 meet the shape and position tolerance and form a smooth arc; S14: Chamfering the tile-shaped magnet 3 and applying 240-mesh glass beads to the surface, using 0.8Mpa for sandblasting finishing; S15: The surface is sprayed with epoxy coating and a tile-shaped magnetic steel 4 is formed.

[0028] In the second embodiment, parallelogram blanks can be directly used for production. This design can save 30% of raw materials and achieve the effect of cost reduction. Among them, the bottom ends of the spliced ​​magnetic blocks 2 at both ends are horizontally arranged and are against the inner bottom surface of the tile-shaped channel 5.1. The purpose is to prevent the problem of excessive corner burst during the fine carving process, which directly leads to processing cracking; and the two spliced ​​magnetic blocks 2 in the center are directly selected as rectangular blocks. Because the extrusion of the viscose gauge 5 during the gluing process will cause the middle part to tilt up and leave a gap, designing the two spliced ​​magnetic blocks 2 in the center into a rectangle can solve this problem well. At the same time, a plurality of demoulding holes are also provided in the viscose gauge 5, so that the spliced ​​magnetic blocks 2 can be safely separated from the viscose gauge 5 when they are spliced ​​into the tile-shaped magnet 3.

[0029] Compared with Example 1, the main advantage of Example 2 is that it can reduce the grinding amount in the CNC precision carving process, which can reduce the processing difficulty and avoid corner defects in the processing process. Because rare earth permanent magnet materials are high in brittleness, high in hardness, and no ductility, reducing the reserved grinding amount can improve the processing qualification rate.

[0030] Through the processing methods of embodiment one and embodiment two, the use of square magnetic steel to splice into tile magnetic steel is combined, so that the molded magnetic steel has the advantages of both square magnetic steel and tile magnetic steel, and the processed tile-shaped magnetic steel 4 has good quality uniformity and consistency. Especially in embodiment two, the grinding amount of the CNC precision carving process can be greatly reduced, a large amount of cost can be saved, and the processing qualification rate and processing quality can be better guaranteed. It has broad application prospects and has important influence on the field of spliced ​​magnetic steel processing.

[0031] The above description is only for the best embodiment of the present invention, but it should not be understood as limiting the claims. The present invention is not limited to the above embodiments, and its specific structure is allowed to be changed. All changes made within the scope of protection of the independent claims of the present invention are within the scope of protection of the present invention.

Claims

1. A method for processing tile-shaped spliced ​​magnetic steel, characterized in that: The steps are as follows: S1: selecting bad materials with qualified magnetic parameters and roughly processing them into initial magnetic sheets, wherein the initial magnetic sheets are in the shape of square sheets or parallelograms; S2: taking the non-magnetic oriented side of the initial magnetic sheet and performing a grain boundary diffusion process; S3: fine-processing the initial magnetic sheet to form a spliced ​​magnetic sheet (1); S4: performing multiple cleaning on the surface of the spliced ​​magnetic sheet (1); S5: In a dust-free workshop, aligning and bonding the spliced ​​magnetic sheets (1) along the width direction of the spliced ​​magnetic sheets (1) with glue to form a spliced ​​magnetic block (2); S6: performing high temperature curing on the spliced ​​magnetic block (2); S7: removing glue from the spliced ​​magnetic block (2); S8: performing multiple cleaning on the surface of the spliced ​​magnetic block (2); S9: In a dust-free workshop, the spliced ​​magnetic block (2) is glued along the thickness direction of the spliced ​​magnetic sheet (1) to form a tile-shaped magnet (3) that is high in the middle and low at both ends; S10: curing the tile-shaped magnet (3) at high temperature; S11: removing glue from the tile-shaped magnet (3); S12: performing rough machining on the inner side surface and the outer side surface of the tile-shaped magnet (3) so that the inner side surface and the outer side surface of the tile-shaped magnet (3) form an initial arc shape; S13: performing fine processing on the inner side surface and the outer side surface of the tile-shaped magnet (3) so that the inner side surface and the outer side surface of the tile-shaped magnet (3) form a smooth arc shape; S14: performing chamfering and surface finishing treatment on the tile-shaped magnet (3); S15: Surface spraying treatment, forming tile-shaped magnetic steel (4).

2. A method for processing tile-shaped spliced ​​magnetic steel according to claim 1, characterized in that: Diffusion sources containing Dy and Tb are used for grain boundary diffusion.

3. According to claim 1, a method for processing tile-shaped spliced ​​magnetic steel is characterized in that: In step S2, step S2.1 is included: performing a simulated aging test on the initial magnetic sheet, at 180°C×2H, half-open circuit 1mm iron plate, attenuation <3%, to verify that the aging test meets the standard.

4. The method for processing tile-shaped spliced ​​magnetic steel according to claim 1, characterized in that: In steps S6 and S10, the steps are included: A1: Continuously fill nitrogen as protective gas during the curing process; A2: After curing is completed, test the performance parameters of the glue joint.

5. The method for processing tile-shaped spliced ​​magnetic steel according to claim 1, characterized in that: After step S7, the method includes step S7.1: performing corresponding wire cutting on the spliced ​​magnetic block (2) according to the curvature of the tile-shaped magnet (3); In step S9, it includes step S9.1: using an adhesive gauge (5) to bond the spliced ​​magnetic blocks (2).

6. A method for processing tile-shaped spliced ​​magnetic steel according to claim 5, characterized in that: The line cutting slope of the spliced ​​magnetic blocks (2) on both sides is equal to the tangent slope at the corresponding position.

7. A method for processing tile-shaped spliced ​​magnetic steel according to claim 5, characterized in that: The adhesive gauge (5) is provided with a tile-shaped channel (5.1) that matches the arched magnetic steel, the outer side of the tile-shaped channel (5.1) is arc-shaped and is used to abut against the outer ends of the spliced ​​magnetic block (2), and the inner side of the tile-shaped channel (5.1) is provided with an abutment column (5.2), and the abutment column (5.2) is used to abut against the inner side of the spliced ​​magnetic block (2).

8. A method for processing tile-shaped spliced ​​magnetic steel according to claim 7, characterized in that: The bottom ends of the splicing magnetic blocks (2) at both ends are arranged horizontally and abut against the inner bottom surface of the tile-shaped channel (5.1).

9. The method for processing tile-shaped spliced ​​magnetic steel according to claim 1, characterized in that: In step S13, the tile-shaped magnet (3) that has been roughly machined is placed in a fine-machined mounting groove (6), and the surface of the tile-shaped magnet (3) is fine-machined using a 200-300 mesh diamond grinding wheel.

10. The method for processing tile-shaped spliced ​​magnetic steel according to claim 1, characterized in that: In step S14, glass beads of 100 to 500 meshes are used and 0.6 to 1 MPa is selected for sandblasting.

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