Processing method of tile-shaped spliced magnetic steel

Abstract

The application discloses a processing method of a tile-shaped spliced magnetic steel. Qualified defective materials are selected and are roughly processed into initial magnetic sheets. A grain boundary diffusion process is performed on the non-magnetic orientation side of the initial magnetic sheets, and the initial magnetic sheets are finely processed into spliced magnetic sheets. The spliced magnetic sheets are aligned and bonded into spliced magnetic blocks along the width direction of the spliced magnetic sheets. Solidification and glue removal are performed. The spliced magnetic blocks are bonded into tile-shaped magnetic bodies along the thickness direction of the spliced magnetic sheets. Solidification and glue removal are performed. The tile-shaped magnetic bodies are subjected to rough processing of inner sides and rough processing of outer sides. The tile-shaped magnetic bodies are subjected to fine processing of inner sides and fine processing of outer sides, chamfering and surface treatment, and the tile-shaped magnetic steel is formed. The application discloses a processing method of a tile-shaped spliced magnetic steel which is formed by splicing square magnetic steels into tile-shaped magnetic steels, so that the formed magnetic steel has the advantages of both the square magnetic steel and the tile-shaped magnetic steel.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of motor magnetic steel production, in particular to a processing method of tile-shaped spliced magnetic steel. BACKGROUND

[0002] Motor loss increases with the motor speed in geometric progression, high loss leads to sharp decline in motor efficiency, in order to achieve high efficiency, various loss problems need to be solved, such as improving the intrinsic coercivity of magnetic steel, so as to achieve the purpose of high temperature resistance, or using splicing magnetic block process to reduce eddy current loss.

[0003] Compared with square sheet magnetic steel, the traditional tile magnetic steel has less pole pair number, good air tightness and higher efficiency, but relatively, the disadvantages of tile magnetic steel are also very obvious. Because of the existence of the arc R, the crystal boundary diffusion coating is a spraying process, which is more complex, the diffusion heat treatment product is unstable in preventing deformation, the production difficulty is high, and the consistency and stability of quality are not as good as square sheet magnetic steel. In practical application, tile magnetic steel or square sheet magnetic steel is often selected according to the demand of motor, but because tile magnetic steel is a kind of surface-mounted rotor or stator, it is often used in high-power motor. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a processing method of tile-shaped spliced magnetic steel, which is spliced from square sheet magnetic steel, so that the formed magnetic steel has the advantages of square sheet magnetic steel and tile magnetic steel.

[0005] The technical scheme adopted by the present application to solve the above problems is a processing method of tile-shaped spliced magnetic steel, the steps of which are as follows:

[0006] S1: selecting bad material with qualified magnetic parameters and rough machining into initial magnetic sheet, the initial magnetic sheet is square or parallelogram;

[0007] S2: taking the non-magnetic orientation side of the initial magnetic sheet to perform crystal boundary diffusion process;

[0008] S3: performing finishing on the initial magnetic sheet to form a spliced magnetic sheet;

[0009] S4: multiple cleaning of the surface of the spliced magnetic sheet;

[0010] S5: in a dust-free workshop, aligning and bonding the spliced magnetic sheet along the width direction of the spliced magnetic sheet with glue to form a spliced magnetic block;

[0011] S6: high temperature curing of the spliced magnetic block;

[0012] S7: removing glue from the spliced magnetic block;

[0013] S8: multiple cleaning of the surface of the spliced magnetic block;

[0014] S9: In a dust-free workshop, the spliced magnetic blocks are glued along the thickness direction of the spliced magnetic sheet to form a tile-shaped magnet with high middle and low ends;

[0015] S10: The tile-shaped magnet is cured at high temperature;

[0016] S11: The tile-shaped magnet is degummed;

[0017] S12: The tile-shaped magnet is rough machined on the inner side and the outer side to form an initial arc shape on the inner side and the outer side of the tile-shaped magnet;

[0018] S13: The tile-shaped magnet is finish machined on the inner side and the outer side to form a smooth arc shape on the inner side and the outer side of the tile-shaped magnet;

[0019] S14: The tile-shaped magnet is chamfered and surface finished;

[0020] S15: Surface spraying treatment is performed to form a tile-shaped magnetic steel.

[0021] Compared with the prior art, the advantages of the present application are that: in the forming process, the initial magnetic sheet in the shape of a square sheet is first machined through step S1, and the machining difficulty of the initial magnetic sheet is low; through step S2, the material magnetic performance, especially the intrinsic coercive force, can be greatly enhanced by grain boundary diffusion process with less rare earth metal; through step S3, the initial magnetic sheet is precisely machined into a spliced magnetic sheet, the quality of the spliced magnetic sheet is uniform and has high consistency, and the magnetic performance consistency of the spliced magnetic sheet in the shape of a square sheet or parallelogram can be ensured; through steps S4-S7, the spliced magnetic sheet is glued into a spliced magnetic block, and the spliced magnetic block inherits the characteristics of uniform quality and high consistency of the spliced magnetic sheet, and at the same time, the spliced magnetic block reduces the loss of eddy current in the use process and can improve the working efficiency of the motor; through steps S8-S11, the spliced magnetic block is glued into a tile-shaped magnet, and the tile-shaped magnet is formed by splicing the spliced magnetic block, which can reduce the loss of eddy current in the use process and improve the working efficiency of the motor; through steps S12-S15, the tile-shaped magnet is finally modified to form a tile-shaped magnetic steel with regular shape and smooth surface, and the finally formed tile-shaped magnetic steel can reduce the defects of poor consistency and stability of the quality of the traditional tile-shaped magnetic steel, maintain the advantages of the original tile-shaped magnetic steel, and form a high-quality tile-shaped magnetic steel.

[0022] As an improvement of the present application, a diffusion source containing Dy and Tb is used for grain boundary diffusion, and through the improvement, the magnetic performance is greatly improved.

[0023] As an improvement of the present application, in step S2, step S2.1 of performing a simulation aging test on the initial magnetic sheet is included, 180 DEG C x 2H, half open circuit 1mm iron plate, attenuation <3%, verifying that the aging test meets the standard, through the improvement, in the magnetic aging test, the function of the half open circuit iron plate is mainly to provide a partially closed magnetic circuit, the half open circuit test mode 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 makes a part of the magnetic force lines of the magnet form a closed loop through the iron plate, and another part of the magnetic force lines is open to the air, so that the test environment is closer to the actual use condition, because many magnets are not completely closed magnetic circuits in actual application, through this mode, the magnetic flux attenuation of the magnet in actual use can be more truly evaluated.

[0024] As an improvement of the present application, in steps S6 and S10, steps of:

[0025] A1: continuously filling nitrogen as a protective gas during the curing process;

[0026] A2: after the curing is completed, testing the performance parameters of the glue joint, through the improvement, in the process of step A1, oxidation of the spliced magnetic blocks and the tile-shaped magnet caused by high temperature can be avoided, and through step A2, the curing quality of the glue can be tested, the curing quality is ensured, and then the forming quality of the tile-shaped magnetic steel is ensured.

[0027] As an improvement of the present application, after step S7, step S7.1 of cutting the spliced magnetic blocks according to the arc of the tile-shaped magnet is included, and in step S9, step S9.1 of using a glue gauge to stick the spliced magnetic blocks is included, through the improvement, through the design of step S7.1, the processing allowance of steps S12 and S13 can be reduced, and then the processing intensity of steps S12 and S13 is reduced, the risk of adverse processing such as an explosion angle is avoided, and a large amount of material can be saved; through the design of step S9.1, although the contact areas between the connected spliced magnetic blocks are different, the stress is uniform, so that the uniformity of the tile-shaped magnet during forming is ensured, and the quality of the final tile-shaped magnetic steel is ensured.

[0028] As an improvement of the present application, the line cutting slope of the two side spliced magnetic blocks is equal to the tangent slope of the corresponding position, through the improvement, the situation of cutting excess can be avoided when line cutting is performed, and the spliced magnetic blocks are scrapped, and at the same time, in steps S12 and S13, processing comparison can be performed, and the error of processing the arc in steps S12 and S13 is avoided.

[0029] As an improvement of the present application, the glue gauge is internally provided with a tile-shaped channel which is matched with the arched magnetic steel, the outer side of the tile-shaped channel is arc-shaped for abutting against the outer side of the two ends of the spliced magnetic block, and the inner side of the tile-shaped channel is provided with an abutting column for abutting against the inner side of the spliced magnetic block, through the improvement, the glue gauge can limit the spliced magnetic block, and the splicing quality of the tile-shaped magnetic body is ensured.

[0030] As an improvement of the present application, the bottom end of the spliced magnetic block at the two ends is horizontally arranged and abuts against the inner side bottom surface of the tile-shaped channel, through the improvement, the stability of the placement of the spliced magnetic block at the two ends is ensured.

[0031] As an improvement of the present application, in step S13, the tile-shaped magnetic body after rough machining is placed into a finishing installation groove, and the surface of the tile-shaped magnetic body is finished by using a 200-300 mesh diamond sand wheel, through the improvement, the machining stability of the outer side arc-shaped surface and the machining surface roughness are ensured.

[0032] As an improvement of the present application, in step S14, 100-500 mesh glass beads are used, and 0.6-1Mpa is selected for sand blasting, through the improvement, the splicing traces of the tile-shaped magnetic steel are covered, the appearance quality of the tile-shaped magnetic steel is improved, meanwhile, the glass beads can make the surface of the tile-shaped magnetic steel smooth, improve the coating adhesion, and be beneficial to the operation of the tile-shaped magnetic steel in the motor. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a structure schematic view of the spliced magnetic block of the present application.

[0034] Figure 2 is a structure schematic view of the tile-shaped magnetic body of the first embodiment of the present application.

[0035] Figure 3 is a structure schematic view of the tile-shaped magnetic steel of the present application.

[0036] Figure 4 is a structure schematic view of the glue gauge of the present application.

[0037] Figure 5 is a connection structure schematic view of the spliced magnetic block and the glue gauge of the second embodiment of the present application.

[0038] Figure 6 is a connection structure schematic view of the tile-shaped magnetic body and the finishing installation groove of the present application.

[0039] 1, spliced magnetic sheet, 2, spliced magnetic block, 3, tile-shaped magnetic body, 4, tile-shaped magnetic steel, 5, glue gauge, 5.1, tile-shaped channel, 5.2, abutting column, 6, finishing installation groove. DETAILED DESCRIPTION

[0040] Embodiments of the application will be further described below with reference to the drawings.

[0041] Example One

[0042] As shown in Figures 1-3 , Figure 6 A processing method of a tile-shaped spliced magnetic steel includes the following steps:

[0043] S1: Select a bad material 48H with qualified magnetic parameters, ensure that the residual magnetism (Br) is greater than or equal to 13.8 KGs, and the intrinsic coercive force (Hcj) is greater than or equal to 17 KOe, and coarsely process into an initial magnetic sheet, the initial magnetic sheet is in a square sheet shape, the size is not less than 15.26 mm x 4.1 mm x 28.5 mm (thickness x width x length), and the initial magnetic sheet is magnetized along the length direction;

[0044] S2: Perform a grain boundary diffusion process on the non-magnetic orientation side of the initial magnetic sheet, use a diffusion source containing Dy and Tb to perform grain boundary diffusion, ensure that the Hcj is improved, and at the same time ensure that the Br floating range is not more than 1%;

[0045] S2.1: Perform a simulation aging test on the initial magnetic sheet, 180°C x 2H, half open circuit 1mm iron plate, attenuation <3%, verify that the aging test meets the standard.

[0046] S3: Perform fine processing on the initial magnetic sheet to form a spliced magnetic sheet 1, use a vertical double-sided grinding machine to process, the grinding width is 4.1 mm to 4±0.005 mm, the shape and position tolerances are 0.01 mm, the appearance has no defects, and the like requirements;

[0047] S4: Perform multiple cleaning on the surface of the spliced magnetic sheet 1, first perform ultrasonic cleaning, and then wipe the surface with anhydrous ethanol;

[0048] S5: In a dust-free workshop, ensure the cleanliness and humidity requirements, align and bond the spliced magnetic sheet 1 along the width direction of the spliced magnetic sheet 1 using glue, select appropriate tool clamps, and splice several spliced magnetic sheets 1 into a spliced magnetic block 2;

[0049] S6: Perform high-temperature curing on the spliced magnetic block 2, the baking temperature is 175±5°C, the baking time is 2-3 hours, and the quality of the spliced product is detected, such as the thickness of the glue layer, the shear force, and the glue joint requirements;

[0050] S6.1: Continuously fill nitrogen as a protective gas during the curing process;

[0051] S6.2: After the curing is completed, test the performance parameters of the glue joint;

[0052] S7: Perform glue overflow removal treatment on the surface of the spliced magnetic block 2 using a double-sided grinding process or a laser glue removal process;

[0053] S8: The surface of the spliced magnetic block 2 is cleaned multiple times, first by ultrasonic cleaning, and then by ethanol wiping;

[0054] S9: In a dust-free workshop, ensure cleanliness and humidity requirements, and use glue to connect the spliced magnetic block 2 along the thickness direction of the spliced magnetic sheet 1. Select appropriate tool clamps to splice several spliced magnetic blocks 2 into a tile-shaped magnet 3 with a high middle and low ends;

[0055] S10: The tile-shaped magnet 3 is cured at a high temperature, with a baking temperature of 175±5℃ and a baking time of 2-3 hours. The quality of the spliced product is detected, such as the thickness of the glue layer, the shear force, and the glue joint requirements;

[0056] S10.1: Nitrogen gas is continuously filled as a protective gas during the curing process;

[0057] S10.2: After curing, test the performance parameters of the glue joint;

[0058] S11: The tile-shaped magnet 3 is treated by double-sided grinding process or laser glue removal process to remove the excess glue on the surface;

[0059] S12: The tile-shaped magnet 3 is preliminarily trimmed by a CNC engraving machine, especially the profile rough machining of the inner side and the profile rough machining of the outer side, so that the inner side and the outer side of the tile-shaped magnet 3 form an initial arc;

[0060] S13: The tile-shaped magnet 3 is size ground by a surface grinding machine, especially the size finishing of the inner side and the size finishing of the outer side using the finishing installation groove 6, so that the inner side and the outer side of the tile-shaped magnet 3 meet the form and position tolerances and form a smooth arc;

[0061] S14: The tile-shaped magnet 3 is chamfered and surface polished;

[0062] S15: Surface spray epoxy plating treatment, forming a tile-shaped magnet steel 4.

[0063] In step S2, 10 groups of samples are detected, as shown in Table 1,

[0064] Table 1 Sample parameters after grain boundary diffusion

[0065]

[0066] In steps S6 and S10, 5 groups of samples are detected, as shown in Table 2,

[0067] Table 2 High-temperature curing sample parameters

[0068]

[0069] Embodiment Two

[0070] As shown in Figure 1 , Figures 3-6 , a processing method of a tile-shaped spliced magnetic steel includes the following steps:

[0071] S1: selecting a bad material 48H with qualified magnetic parameters, ensuring that the residual magnetism (Br) is greater than or equal to 13.8 KGs, and the intrinsic coercive force (Hcj) is greater than or equal to 17 KOe, and rough machining into an initial magnetic sheet, the initial magnetic sheet is in the shape of a parallelogram, the size is not less than 15.26 mm x 4.1 mm x 28.5 mm (thickness x width x length), and the initial magnetic sheet is magnetized along the length direction;

[0072] S2: taking the non-magnetic orientation side of the initial magnetic sheet to perform a grain boundary diffusion process, using a diffusion source containing Dy and Tb to perform grain boundary diffusion, ensuring that the Hcj is improved, and ensuring that the Br floating range is not more than 1%;

[0073] S2.1: performing a simulation aging test on the initial magnetic sheet, 180°C x 2H, half open circuit 1mm iron plate, attenuation <3%, verifying that the aging test meets the standard.

[0074] S3: performing finishing machining on the initial magnetic sheet to form a spliced magnetic sheet 1, using a vertical double-sided grinding machine to process, the grinding width of 4.1 mm to 4±0.005 mm, the shape and position tolerances of flatness and parallelism are both 0.01 mm, and the appearance has no defects and other requirements;

[0075] S4: performing multiple cleaning on the surface of the spliced magnetic sheet 1, first performing ultrasonic cleaning, and then wiping the surface with anhydrous ethanol;

[0076] S5: in a dust-free workshop, ensuring cleanliness and humidity requirements, aligning and bonding the spliced magnetic sheet 1 along the width direction of the spliced magnetic sheet 1 using glue, selecting appropriate tool clamps, and splicing several spliced magnetic sheets 1 into a spliced magnetic block 2;

[0077] S6: performing high-temperature curing on the spliced magnetic block 2, the baking temperature is 175±5°C, the baking time is 2-3 hours, and the quality of the spliced product is detected, such as the thickness of the glue layer, the shear force, and the glue joint requirements;

[0078] S6.1: continuously filling nitrogen as a protective gas during the curing process;

[0079] S6.2: after the curing is completed, testing the performance parameters of the glue joint;

[0080] S7: using a double-sided grinding process or a laser glue removal process to remove the glue overflow on the surface of the spliced magnetic block 2;

[0081] S7.1: the spliced magnetic blocks 2 are cut according to the arc of the tile-shaped magnet 3, one or two middle spliced magnetic blocks 2 remain unchanged, the cutting slope of the spliced magnetic blocks 2 far from the middle spliced magnetic blocks 2 is larger, and the cutting slope of the spliced magnetic blocks 2 on both sides is equal to the tangent slope at the corresponding position;

[0082] S8: the surface of the spliced magnetic blocks 2 is cleaned multiple times, first, ultrasonic cleaning is performed, and then the surface is wiped with anhydrous ethanol;

[0083] S9: in a dust-free workshop, the cleanliness and humidity requirements are ensured, the spliced magnetic blocks 2 are glued along the thickness direction of the spliced magnetic sheet 1, appropriate tool clamps are selected, and the spliced magnetic blocks 2 are spliced into the tile-shaped magnet 3 with high middle and low ends;

[0084] S9.1: the spliced magnetic blocks 2 are glued by using the glue through gauge 5, the tile-shaped channel 5.1 that matches the arch-shaped magnetic steel is arranged in the glue through gauge 5, the outer side of the tile-shaped channel 5.1 is arc-shaped and used for abutting against the outer sides of the spliced magnetic blocks 2, the inner side of the tile-shaped channel 5.1 is provided with the abutting column 5.2, the abutting column 5.2 is used for abutting against the inner sides of the spliced magnetic blocks 2, and the bottom ends of the spliced magnetic blocks 2 on both sides are horizontally arranged and abut against the inner side bottom surface of the tile-shaped channel 5.1;

[0085] S10: the tile-shaped magnet 3 is cured at high temperature, the baking temperature is 175±5℃, the baking time is 2-3 hours, and the quality of the spliced product is detected, such as the thickness of the glue layer, the shear force, and the glue joint;

[0086] S10.1: nitrogen gas is continuously filled as a protective gas during the curing process;

[0087] S10.2: after the curing is completed, the performance parameters of the glue joint are tested;

[0088] S11: the overflow glue on the surface of the tile-shaped magnet 3 is removed by using a double-sided grinding process or a laser glue removal process;

[0089] S12: the CNC engraving machine is used to preliminarily trim the contour of the tile-shaped magnet 3, especially the contour rough machining of the inner side and the contour rough machining of the outer side, so that the inner side and the outer side of the tile-shaped magnet 3 form an initial arc;

[0090] S13: the size of the tile-shaped magnet 3 is ground and finished by using a flat grinding machine, the 200-300 mesh diamond grinding wheel is used to perform size finishing on the inner side and the size finishing on the outer side in combination with the finishing installation groove 6, so that the inner side and the outer side of the tile-shaped magnet 3 meet the form and position tolerances and form a smooth arc;

[0091] S14: chamfering the tile-shaped magnet 3 and using 240 mesh glass beads on the surface, and selecting 0.8 Mpa for sandblasting finishing treatment;

[0092] S15: surface spraying epoxy coating treatment, forming tile-shaped magnetic steel 4.

[0093] In Example Two, a parallelogram blank can be directly used for production. This design can save 30% of raw materials and achieve cost reduction. The bottom end of the two end spliced magnetic blocks 2 is horizontally arranged and abuts the inner bottom surface of the tile-shaped channel 5.1. The purpose is to prevent the problem of excessive angle caused by the fine carving process, which directly leads to the cracking of the processing. The two center spliced magnetic blocks 2 are directly selected as cuboids. The extrusion of the glue sticking rule 5 during the glue sticking process will cause the middle part to be raised, leaving a gap. Designing the two center spliced magnetic blocks 2 as rectangles can well solve this problem. In addition, the glue sticking rule 5 is also provided with multiple demolding holes to facilitate the safe separation of the spliced magnetic blocks 2 from the glue sticking rule 5 when the spliced magnetic blocks 2 are spliced into the tile-shaped magnet 3.

[0094] Compared with Example One, the main advantage of Example Two is that it can reduce the grinding amount of the CNC fine carving process, which can reduce the processing difficulty and avoid the problem of missing corners during processing. Because rare earth permanent magnetic materials have the characteristics of high brittleness, high hardness, and no ductility, reducing the reserved grinding amount can improve the processing qualification rate.

[0095] Through the processing methods of Example One and Example Two, the square sheet magnetic steel is spliced into a tile-shaped magnetic steel, so that the formed magnetic steel has the advantages of square sheet magnetic steel and tile-shaped magnetic steel. The tile-shaped magnetic steel 4 formed by processing has good quality uniformity and consistency. In Example Two, the grinding amount of the CNC fine 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, which has broad application prospects and important influence significance for the field of spliced magnetic steel processing.

[0096] The above only describes the best embodiments of the present application, but cannot be understood as limiting the claims. The present application is not limited to the above embodiments, and the specific structure can be changed. Any changes made within the protection scope of the independent claims of the present application are within the protection scope of the present application.

Claims

1. A method of processing a tile-shaped splicing magnetic steel, characterized by, The steps are as follows: S1: selecting bad materials with qualified magnetic parameters, and rough machining into initial magnetic sheets in the shape of square or parallelogram; S2: taking the non-magnetic orientation side of the initial magnetic sheet to perform grain boundary diffusion process; S3: performing finishing on 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 sheet (1) with glue along the width direction of the spliced magnetic sheet (1) to form a spliced magnetic block (2); S6: performing high-temperature curing on the spliced magnetic block (2); S7: performing glue removal on the spliced magnetic block (2); S8: performing multiple cleaning on the surface of the spliced magnetic block (2); S9: in a dust-free workshop, bonding the spliced magnetic block (2) with glue along the thickness direction of the spliced magnetic sheet (1) to form a tile-shaped magnet (3) with high middle and low ends; S10: performing high-temperature curing on the tile-shaped magnet (3); S11: performing glue removal on the tile-shaped magnet (3); S12: performing rough machining on the inner and outer sides of the tile-shaped magnet (3) to form initial arc shapes on the inner and outer sides of the tile-shaped magnet (3); S13: performing finishing on the inner and outer sides of the tile-shaped magnet (3) to form smooth arc shapes on the inner and outer sides of the tile-shaped magnet (3); S14: performing chamfering and surface finishing treatment on the tile-shaped magnet (3); S15: surface spraying treatment to form a tile-shaped magnetic steel (4).

2. The method of claim 1, wherein: A diffusion source containing Dy and Tb is used for grain boundary diffusion.

3. The method of claim 1, wherein the tile-shaped magnetic steel is a tile-shaped magnetic steel for a motor. In step S2, step S2.1 is included: performing a simulated aging test on the initial magnetic sheet, 180℃×2H, half-open circuit 1mm iron plate, attenuation <3%, verifying that the aging test meets the standard.

4. The method of claim 1, wherein the tile-shaped magnetic steel is a tile-shaped magnetic steel for a motor. In steps S6 and S10, steps A1 and A2 are included: A1: continuously filling nitrogen as protective gas during the curing process; A2: after the curing is completed, testing the glue joint performance parameters.

5. The tile-shaped spliced magnetic steel processing method according to claim 1, wherein: After step S7, step S7.1 is included: cutting the spliced magnetic block (2) according to the arc of the tile-shaped magnet (3) using a wire cutter; In step S9, step S9.1 is included: using a glue guide gauge (5) to bond the spliced magnetic block (2).

6. The method of claim 5, wherein: The wire cutting slope of the two spliced magnetic blocks (2) is equal to the tangent slope at the corresponding position.

7. The method of claim 5, wherein: the magnet is a tile-shaped pot magnet. The glue guide gauge (5) is provided with a tile-shaped channel (5.1) that fits the arch-shaped magnetic steel, the outer side of the tile-shaped channel (5.1) is arc-shaped and used to abut against the outer sides of the two ends of the spliced magnetic block (2), and the inner side of the tile-shaped channel (5.1) is provided with an abutting column (5.2) used to abut against the inner side of the spliced magnetic block (2).

8. The method of claim 7, wherein: The bottom ends of the two spliced magnetic blocks (2) are horizontally arranged and abut against the inner bottom surface of the tile-shaped channel (5.1).

9. The processing method of the tile-shaped spliced ​​magnet according to claim 1, characterized in that: In step S13, the tile-shaped magnet (3) after rough machining is placed into a finishing installation groove (6), and the surface of the tile-shaped magnet (3) is finished using a 200-300 mesh diamond sand wheel.

10. The method of claim 1, wherein: In step S14, 100-500 mesh glass beads are used, and sandblasting is performed at 0.6-1 MPa.

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