Silicon steel sheet grain size inspection mechanism
By combining black magnetic powder detection with a linear slide and three magnetic yokes, the environmental pollution problem of silicon steel sheet grain size detection has been solved, achieving efficient and automated grain size reconstruction, which is applicable to silicon steel sheets of different sizes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-04-14
AI Technical Summary
Existing methods for detecting the grain size of silicon steel sheets cause serious environmental pollution and are difficult to adapt to the testing needs of silicon steel sheets of different sizes.
The black magnetic powder detection method, through the synergistic action of a linear slide and three magnetic yokes, achieves uniform spraying of magnetic powder and precise application of magnetic field. Combined with a magnetic suspension collection tank and sedimentation device, it avoids the environmental pollution caused by chemical corrosion methods and is suitable for silicon steel sheets of different sizes.
It achieves over 95% grain size reconstruction, avoids environmental pollution, has a highly automated testing process, and is suitable for silicon steel sheets of different sizes.
Smart Images
Figure CN224122262U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of silicon steel sheet grain size inspection technology, and in particular relates to a silicon steel sheet grain size inspection mechanism. Background Technology
[0002] Silicon steel sheets (electrical silicon steel sheets) are a type of iron-silicon soft magnetic alloy with a silicon content of 0.5% to 4.8%. They are manufactured through hot rolling or cold rolling processes and are widely used in the power, electronics, and industrial sectors. The grain size of silicon steel sheets refers to the size and distribution of the grains within the sheet. As a core soft magnetic material in power equipment and motors, the grain size of silicon steel sheets directly affects the material's hysteresis loss and iron loss characteristics.
[0003] In recent years, silicon steel sheets have been continuously developed towards thinner and ultra-thin specifications. Therefore, the requirements and difficulties for grain size testing of silicon steel sheets are becoming increasingly stringent. Most methods use the ferric chloride etching method to evaluate grain size. However, this method causes severe pollution to the laboratory environment, and the pungent odor has a significant impact on instruments, equipment, and operators. Therefore, there is an urgent need to research pollution-free methods and devices for evaluating the macroscopic grain size of grain-oriented silicon steel. Utility Model Content
[0004] This invention provides a silicon steel sheet grain size inspection mechanism. Through the magnetic traces of black magnetic powder, it can clearly reflect the internal material distribution of the silicon steel sheet, achieving over 95% grain size reconstruction and avoiding the environmental pollution caused by chemical corrosion methods. The linear slide table enables uniform spraying of magnetic powder and precise application of the magnetic field, suitable for silicon steel sheets of different sizes, regardless of sample size. Furthermore, a flow adjustment device on the spray head ensures uniform distribution of black magnetic powder on the silicon steel sheet surface, achieving a high degree of automation in the inspection process. The synergistic action of three magnetic yokes ensures stable application of the magnetic field. A magnetic suspension collection tank and sedimentation and discharge device are also included to effectively prevent magnetic powder sedimentation and extend the service life of the magnetic suspension. In summary, this invention solves the problems in the prior art.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model discloses a silicon steel sheet grain size inspection mechanism, comprising an equipment mounting frame and a control cabinet. The control cabinet is located on one side of the equipment mounting frame, and a testing platform is fixedly connected inside the control cabinet. Three magnetic yokes are fixedly connected to the top of the testing platform, and a magnetic suspension collection tank is embedded in the bottom of the testing platform. A spray pump is fixedly connected to the inner bottom of the equipment mounting frame, and a suction pipe is fixedly connected between the input end of the spray pump and one side of the magnetic suspension collection tank. A discharge pipe is fixedly connected to the output end of the spray pump, and a three-way valve is fixedly connected to one end of the discharge pipe. A spray hose is fixedly connected to one end of the three-way valve, and a pair of spray heads equipped with flow adjustment devices are fixedly connected to one end of the spray hose. A linear slide is fixedly connected to the inner wall of the equipment mounting frame, and both spray heads are located on the linear slide.
[0007] Furthermore, the linear slide includes a guide rail, a slider, a lead screw, and a servo motor. The guide rail is fixedly connected inside the equipment mounting frame, and the slider is sleeved on the guide rail and slidably connected to it. Both ends of the lead screw are rotatably connected to the inner wall of the guide rail through bearings. The outer wall of the slider is drilled with threaded through holes, and the slider is threadedly connected to the lead screw through the threaded through holes. The slider is fixedly connected to a pair of spray heads. The servo motor is fixedly connected to one side of the guide rail, and the output end of the servo motor is fixedly connected to one end of the lead screw.
[0008] Furthermore, a sedimentation tank is fixedly connected inside the equipment mounting frame, and a drain pipe is fixedly connected to the other end of the three-way valve, with one end of the drain pipe located at the top of the sedimentation tank.
[0009] Furthermore, a drain valve is fixedly connected to one side of the sedimentation tank, and a clean water tank is fixedly connected inside the equipment mounting frame, with the drain valve located at the top of the clean water tank.
[0010] Furthermore, a pneumatic stirring device is fixedly connected to the bottom of the magnetic suspension collection tank.
[0011] Furthermore, a lighting lamp is fixedly connected to the inner top of the equipment mounting bracket.
[0012] The present invention has the following advantages over the prior art:
[0013] 1. In this technical solution, when the silicon steel sheet generates a magnetic field, the difference in magnetic permeability between the internal metallographic particles and the silicon steel sheet itself causes the magnetic powder to be adsorbed at the metallographic particle positions when it flows on the surface of the silicon steel sheet, forming magnetic traces. The magnetic traces of the black magnetic powder can clearly reflect the material distribution inside the silicon steel sheet, achieving a grain size reconstruction of more than 95%. Furthermore, the use of the black magnetic powder detection method avoids the environmental pollution caused by the chemical corrosion method.
[0014] 2. This technical solution uses a servo motor in a linear slide to drive a lead screw to rotate, causing the slider to move along the guide rail and drive a pair of spray heads to spray, achieving uniform spraying of magnetic powder and precise application of magnetic field. The spray head stroke range can cover silicon steel sheets of different widths and is suitable for silicon steel sheets of different sizes, without being limited by sample size. In addition, the spray head is equipped with a flow adjustment device to ensure that the black magnetic powder is evenly distributed on the surface of the silicon steel sheet, realizing a high degree of automation in the detection process.
[0015] 3. This technical solution ensures the stable application of the magnetic field through the synergistic effect of three magnetic yokes. At the same time, the equipment mounting frame is equipped with a magnetic suspension collection tank and a sedimentation and discharge device, which effectively prevents magnetic powder sedimentation and extends the service life of the magnetic suspension.
[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a front view structural schematic diagram of a silicon steel sheet grain size inspection mechanism according to the present invention;
[0019] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;
[0020] Figure 3 This utility model Figure 1 Enlarged structural diagram at point B;
[0021] Figure 4 This is a side view schematic diagram of a silicon steel sheet grain size inspection mechanism according to the present invention;
[0022] Figure 5 This is a top view schematic diagram of a silicon steel sheet grain size inspection mechanism according to the present invention.
[0023] The attached diagram lists the components represented by each number as follows:
[0024] 1. Equipment mounting frame; 2. Control cabinet; 3. Testing platform; 4. Magnetic suspension collection tank; 5. Spray pump; 6. Suction pipe; 7. Discharge pipe; 8. Three-way valve; 9. Spray hose; 10. Spray head; 11. Linear slide; 1101. Guide rail; 1102. Slider; 1103. Lead screw; 1104. Servo motor; 12. Magnetic yoke; 13. Sedimentation tank; 14. Drain pipe; 15. Clear water tank; 16. Discharge valve; 17. Pneumatic stirring device; 18. Lighting. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0026] In the description of this utility model, it should be understood that the terms "relative", "one end", "inner", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Specific implementation examples:
[0028] Please see Figures 1-5 As shown, the present invention discloses a silicon steel sheet grain size inspection mechanism, comprising an equipment mounting frame 1 and a control cabinet 2. The control cabinet 2 is located on one side of the equipment mounting frame 1, and a detection platform 3 is fixedly connected inside the control cabinet 2. Three magnetic yokes 12 are fixedly connected to the top of the detection platform 3, and a magnetic suspension collection tank 4 is embedded in the bottom of the detection platform 3. A spray pump 5 is fixedly connected to the inner bottom of the equipment mounting frame 1, and a suction pipe 6 is fixedly connected between the input end of the spray pump 5 and one side of the magnetic suspension collection tank 4. A discharge pipe 7 is fixedly connected to the output end of the spray pump 5, and a three-way valve 8 is fixedly connected to one end of the discharge pipe 7. A spray hose 9 is fixedly connected to one end of the three-way valve 8, and a pair of spray heads 10 equipped with flow adjustment devices are fixedly connected to one end of the spray hose 9. A linear slide 11 is fixedly connected to the inner wall of the equipment mounting frame 1, and the pair of spray heads 10 are both located on the linear slide 11.
[0029] In the specific implementation process, during testing, the silicon steel sheet is placed on the testing platform 3, positioned between the three magnetic yokes 12. Then, under the integrated control of the control cabinet 2, the spray pump 5 is driven to draw the magnetic suspension from the magnetic suspension collection tank 4 through the suction pipe 6, and flows through the discharge pipe 7 and three-way valve 8 into the spray hose 9, from where it is sprayed downwards by a pair of spray heads 10. At the same time, the pair of spray heads 10 move horizontally with the help of the linear slide table 11, which can evenly spray black magnetic powder onto the surface of the silicon steel sheet. The spray heads 10 are equipped with a flow regulating device to ensure uniform distribution of magnetic powder. Moreover, the travel range of the spray heads 10 can cover silicon steel sheets of different widths, and is suitable for silicon steel sheets of different sizes, without being limited by sample size. The core width of the magnetic yoke 12 is about 150 mm, and the coil of the magnetic yoke 12 is encapsulated in stainless steel with waterproof seal. Magnetic conductive sheets are provided between the magnetic yokes 12. After spraying, when AC current is applied to the coil of the magnetic yoke 12, a closed magnetic circuit is formed inside the iron core. The magnetic lines of force are transmitted longitudinally along the iron core, reducing magnetic leakage. The magnetic conductive sheets extend the magnetic lines of force of the two poles of the magnetic yoke 12 to the adjacent magnetic yokes 12, forming a triangular closed magnetic circuit that covers a larger area. Thus, the magnetic field of the silicon steel sheet is generated by the synergistic effect of the three magnetic yokes 12. When the silicon steel sheet generates a magnetic field, due to the difference in magnetic permeability between the metallographic particles inside and the silicon steel sheet itself, black magnetic powder is adsorbed at the metallographic particle positions when the magnetic powder flows on the surface of the silicon steel sheet, forming magnetic traces. The magnetic traces of black magnetic powder can clearly reflect the material distribution inside the silicon steel sheet, achieving a grain size reconstruction of more than 95%. Moreover, the use of black magnetic powder detection method avoids the environmental pollution caused by chemical corrosion method.
[0030] The linear slide 11 includes a guide rail 1101, a slider 1102, a lead screw 1103, and a servo motor 1104. The guide rail 1101 is fixedly connected inside the equipment mounting frame 1, and the slider 1102 is sleeved on the guide rail 1101 and slidably connected to it. Both ends of the lead screw 1103 are rotatably connected to the inner wall of the guide rail 1101 through bearings. The outer wall of the slider 1102 is drilled with a threaded through hole, and the slider 1102 is threadedly connected to the lead screw 1103 through the threaded through hole. The slider 1102 is fixedly connected to a pair of spray heads 10. The servo motor 1104 is fixedly connected to one side of the guide rail 1101, and the output end of the servo motor 1104 is fixedly connected to one end of the lead screw 1103.
[0031] The servo motor 1104 drives the lead screw 1103 to rotate, causing the slider 1102 to move through the threaded through hole under the rotation of the lead screw 1103. This drives a pair of spray heads 10 to move horizontally along the guide rail 1101, enabling uniform spraying of magnetic powder and precise application of magnetic field. The travel range of the spray head 10 can cover silicon steel sheets of different widths, making it suitable for silicon steel sheets of different sizes and not limited by sample size.
[0032] The equipment mounting frame 1 has a sedimentation tank 13 fixedly connected inside, and the other end of the three-way valve 8 is fixedly connected to a drain pipe 14, with one end of the drain pipe 14 located at the top of the sedimentation tank 13.
[0033] The three-way valve 8 is switched to the discharge direction. The magnetic suspension inside the magnetic suspension collection tank 4 is drawn by the spray pump 5 and flows through the discharge pipe 7 and the three-way valve 8 into the discharge pipe 14. Then, it is introduced into the sedimentation tank 13 through the discharge pipe 14. This can deal with the situation where the magnetic suspension is contaminated by impurities and agglomeration.
[0034] The sedimentation tank 13 is fixedly connected to one side of a drain valve 16, and the equipment mounting frame 1 is fixedly connected to a clean water tank 15 inside, with the drain valve 16 located on top of the clean water tank 15.
[0035] After the magnetic suspension in the sedimentation tank 13 has been left to stand for a period of time, the magnetic powder and water will separate into layers. The upper layer of clear water can be discharged into the clear water tank 15 through the drain valve 16. The lower layer of magnetic powder will dry and form sludge. The sludge can be cleaned by pulling out the sedimentation tank 13.
[0036] Among them, the bottom of the magnetic suspension collection tank 4 is fixedly connected to a pneumatic stirring device 17.
[0037] By setting up a pneumatic stirring device 17, its output end is equipped with an air blowing pipe, which is also set at the bottom of the magnetic suspension collection tank 4 to spray compressed air into the interior of the magnetic suspension collection tank 4. The air blowing volume and flow rate are adjustable, so as to prevent magnetic powder from settling through turbulence.
[0038] A lighting lamp 18 is fixedly connected to the inner top of the equipment mounting frame 1.
[0039] The lighting lamp 18 provides illumination when an industrial camera mounted on the inner top of the equipment mounting frame 1 captures magnetic trace information on the surface of the silicon steel sheet, making the image clearer and brighter, which is beneficial for subsequent clear observation.
[0040] The circuits, electronic components, and chip modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.
[0041] All standard parts used in the application documents can be purchased from the market. All components in this application document can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The electrical components mentioned in this document are all electrically connected to the external main controller and power supply, and the main controller is a conventional known device that can play a control role.
[0042] The working principle of this utility model is as follows:
[0043] In use, during testing, the silicon steel sheet is placed on the testing platform 3, positioned between the three magnetic yokes 12. Then, under the integrated control of the control cabinet 2, the spray pump 5 is driven to draw the magnetic suspension from the magnetic suspension collection tank 4 through the suction pipe 6. The suspension then flows through the discharge pipe 7 and the three-way valve 8 into the spray hose 9, and is sprayed downwards by a pair of spray heads 10. Simultaneously, the servo motor 1104 drives the lead screw 1103 to rotate, causing the slider 1102 to move through the threaded through-hole under the rotation of the lead screw 1103. This movement drives the pair of spray heads 10 to move horizontally along the guide rail 1101, evenly spraying black magnetic powder onto the surface of the silicon steel sheet. After spraying, alternating current is applied to the three magnetic yokes 12, and under their synergistic effect… Together, they generate a magnetic field for the silicon steel sheet. Utilizing the difference in magnetic conductivity between the metallographic particles inside and the silicon steel sheet itself, when the magnetic powder flows on the surface of the silicon steel sheet, black magnetic powder is adsorbed at the locations of the metallographic particles, forming magnetic traces. The magnetic traces of the black magnetic powder can clearly reflect the material distribution inside the silicon steel sheet. Moreover, the three-way valve 8 is switched to the drainage direction, and the magnetic suspension inside the magnetic suspension collection tank 4 is drawn by the spray pump 5 and flows through the discharge pipe 7 and the three-way valve 8 into the drainage pipe 14. Then, the drainage pipe 14 introduces it into the sedimentation tank 13. After standing for a period of time, the magnetic powder and water will separate into upper and lower layers. The upper layer of clear water can be discharged into the clear water tank 15 through the drain valve 16, and the lower layer of magnetic powder will dry to form sludge. The sludge can be cleaned by pulling out the sedimentation tank 13.
[0044] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A silicon steel sheet grain size inspection mechanism, comprising an equipment mounting frame (1) and a control cabinet (2), characterized in that, The control cabinet (2) is located on one side of the equipment mounting frame (1), and a detection platform (3) is fixedly connected inside the control cabinet (2). Three magnetic yokes (12) are fixedly connected to the top of the detection platform (3), and a magnetic suspension collection tank (4) is embedded and connected to the bottom of the detection platform (3). A spray pump (5) is fixedly connected to the bottom of the equipment mounting frame (1), and a suction pipe is fixedly connected between the input end of the spray pump (5) and one side of the magnetic suspension collection tank (4). 6) The output end of the spray pump (5) is fixedly connected to a discharge pipe (7), and one end of the discharge pipe (7) is fixedly connected to a three-way valve (8). One end of the three-way valve (8) is fixedly connected to a spray hose (9), and one end of the spray hose (9) is fixedly connected to a pair of spray heads (10) equipped with flow adjustment devices. The inner wall of the equipment mounting bracket (1) is fixedly connected to a linear slide (11), and the pair of spray heads (10) are both located on the linear slide (11).
2. The silicon steel sheet grain size inspection mechanism according to claim 1, characterized in that, The linear slide (11) includes a guide rail (1101), a slider (1102), a lead screw (1103), and a servo motor (1104). The guide rail (1101) is fixedly connected inside the equipment mounting frame (1), and the slider (1102) is sleeved on the guide rail (1101) and slidably connected to it. Both ends of the lead screw (1103) are rotatably connected to the inner wall of the guide rail (1101) through bearings. The outer wall of the slider (1102) is drilled with a threaded through hole, and the slider (1102) is threadedly connected to the lead screw (1103) through the threaded through hole. The slider (1102) is fixedly connected to a pair of spray heads (10). The servo motor (1104) is fixedly connected to one side of the guide rail (1101), and the output end of the servo motor (1104) is fixedly connected to one end of the lead screw (1103).
3. The silicon steel sheet grain size inspection mechanism according to claim 1, characterized in that, The equipment mounting frame (1) is fixedly connected to a sedimentation tank (13), and the other end of the three-way valve (8) is fixedly connected to a drain pipe (14), with one end of the drain pipe (14) located at the top of the sedimentation tank (13).
4. The silicon steel sheet grain size inspection mechanism according to claim 3, characterized in that, A drain valve (16) is fixedly connected to one side of the sedimentation tank (13), and a clean water tank (15) is fixedly connected inside the equipment mounting frame (1), with the drain valve (16) located on top of the clean water tank (15).
5. The silicon steel sheet grain size inspection mechanism according to claim 1, characterized in that, A pneumatic stirring device (17) is fixedly connected to the bottom of the magnetic suspension collection tank (4).
6. The silicon steel sheet grain size inspection mechanism according to claim 1, characterized in that, A lighting lamp (18) is fixedly connected to the inner top of the equipment mounting bracket (1).