Detection device and detection method for PTF of magnetic target material

Abstract

The invention provides a detection device and a detection method for PTF of a magnetic target material. The detection device comprises a horizontal moving bracket, a fixed bracket, a detection tray, a probe and a magnet, the horizontal moving support comprises a horizontal sliding base, a vertical support connected with one end of the horizontal sliding base, and a cross arm movably connected to the vertical support. The fixed support comprises a detection table top arranged on the upper portion in a spaced mode in the vertical direction and a fixed base arranged on the lower portion, and a sliding space is formed between the detection table top and the fixed base. The detection tray is placed on the detection table top, the magnet is fixed on the horizontal sliding base, and the probe is located above the detection tray and movably connected with the cross arm. The detection device realizes detection in any radius area of the magnetic material sample placed on the detection tray; in addition, the distance between the probe and the detection table top can be adjusted, so that corresponding finished products and products with different thicknesses can be detected after the products are welded.

Description

Technical Field

[0001] The present invention belongs to the technical field of PTF detection, and relates to a detection device for a magnetic target material PTF, and in particular to a detection device and a detection method for a magnetic target material PTF. Background Art

[0002] PTF detection of magnetic target materials is a commonly used method for detecting the magnetic permeability of magnetic materials. It can be used to detect the magnetic permeability of magnetic materials. The principle of PTF detection is to use the magnetic induction intensity sensed by the external magnetic field passing through the magnetic target material to achieve the detection of PTF of magnetic target materials, but conventional detection methods are limited to the detection of semi-finished products.

[0003] The detection method used in the prior art is usually to place the product in a specified position of the device, rotate the product manually, and detect different positions on the circumference. The main disadvantages of this detection method are: first, it requires a fixed radius area for detection, and the detection range is small; second, it can only detect semi-finished products, and cannot detect finished products after welding.

[0004] CN200979591Y discloses a test device for the PTF of a disk-shaped magnetic target material, which includes a target platform, a horseshoe-shaped permanent magnet, and a Hall probe; the horseshoe-shaped permanent magnet is arranged at the lower part of the target platform, and the Hall probe is arranged at the upper part of the target platform, and the lower middle part of the target platform is integrally connected with a target platform support, and the characteristic is that a positioning concave hole is arranged in the middle part of the upper surface of the target platform, and a calibration sleeve is inserted in the concave hole. The calibration sleeve is in the shape of a disk, three layers, inverted steps, and integrally connected, the upper layer is a circular pressure plate, the middle layer is a circular positioning plate, and the lower layer is a convex column, which is inserted into the positioning concave hole. Two positioning bearings are also arranged on one side of the target platform. The advantages of this document are: convenient adjustment, and the PTF of disk-shaped magnetic targets with diameters and thicknesses within a certain range can be tested simply and quickly, and can be used for PTF index inspection of experimental processes and finished products. However, the test device requires fixed radius area detection, and the detection range is small.

[0005] CN101206250A discloses a magnetic field detector fixing assembly device, which is used for a manually operated or automated through flux (PTF) measurement frame for measuring a sputtering target. The magnetic field detector fixing assembly device has a washer with a longitudinal opening, and the opening of the washer allows the magnetic field detector to be positioned. At least one fastener passes through at least one opening of the magnetic field detector fixing device, and the fastener is suitable for being adjusted to mechanically connect the washer so as to fix the washer at a predetermined position in the magnetic field detector fixing assembly. The washer prevents the magnetic field detector from being damaged due to over-tightening of the fastener, and also prevents scratching the surface of the sputtering target to be tested. However, the magnetic field detector fixing assembly device requires a fixed radius area for detection, the detection range is small, and it can only detect semi-finished products, and cannot detect finished products after welding.

[0006] The detection devices for magnetic target PTF disclosed in the prior art have certain defects, such as the need for fixed radius area detection, which results in a small detection range, and the problem that they can only detect semi-finished products but not finished products after welding. Therefore, it is very important to develop and design a new detection device and detection method for magnetic target PTF. Summary of the invention

[0007] In view of the deficiencies in the prior art, the object of the present invention is to provide a detection device and a detection method for a magnetic target material PTF. The detection device for a magnetic target material PTF provided by the present invention comprises a horizontally movable bracket, and a probe is movably connected to the cross arm of the horizontally movable bracket. When the horizontally movable bracket moves horizontally, the probe moves horizontally accordingly, thereby realizing the detection of any radial area of ​​the magnetic target material placed on the detection tray; in addition, since the probe is movably connected to the cross arm, when the cross arm moves up and down, the probe also moves up and down accordingly, and the distance between the probe and the detection table is adjustable. When the product is welded to obtain the corresponding finished product, it can also be placed on the detection tray for calibration, and products with different thicknesses can also be placed on the detection tray as magnetic targets for detection.

[0008] To achieve this object, the present invention adopts the following technical solutions:

[0009] In a first aspect, the present invention provides a detection device for a magnetic target material PTF, the detection device comprising a horizontal movable bracket, a fixed bracket, a detection tray, a probe and a magnet;

[0010] The horizontal movable bracket comprises a horizontal sliding base, a vertical bracket connected to one end of the horizontal sliding base, and a horizontal arm movably connected to the vertical bracket;

[0011] The fixed bracket includes a detection table arranged at intervals on the upper side along the vertical direction and a fixed base arranged on the lower side, and a sliding space is formed between the detection table and the fixed base;

[0012] The detection tray is placed on the detection table, the magnet is fixed on the horizontal sliding base, and the probe is located above the detection tray and is movably connected to the cross arm;

[0013] The horizontal sliding base is located in the sliding space above the fixed base. When the horizontal sliding base slides horizontally, the probe moves horizontally accordingly.

[0014] The detection device for the magnetic target material PTF provided by the present invention comprises a horizontal movable bracket, and a probe is movably connected to the cross arm of the horizontal movable bracket. When the horizontal movable bracket moves horizontally, the probe moves horizontally accordingly, thereby realizing the detection of any radial area of ​​the magnetic target material placed on the detection tray; in addition, since the probe is movably connected to the cross arm, when the cross arm moves up and down, the probe also moves up and down accordingly, and the distance between the probe and the detection table is adjustable. When the product is welded to obtain the corresponding finished product, it can also be placed on the detection tray for calibration, and products with different thicknesses can also be placed on the detection tray as magnetic targets for detection.

[0015] As a preferred technical solution of the detection device described in the present invention, the horizontal sliding base includes a horizontal sliding chassis, a vertical side panel connected to one end of the horizontal sliding chassis and perpendicular to the horizontal sliding chassis, and a top plate connected to the vertical side panel at one end and parallel to the horizontal sliding chassis; the vertical bracket is arranged at one end of the surface of the top plate and is perpendicular to the surface of the top plate.

[0016] As a preferred technical solution of the detection device of the present invention, a first support member is provided between the horizontal sliding chassis and the top plate.

[0017] As a preferred technical solution of the detection device of the present invention, the first support member includes two first support columns.

[0018] As a preferred technical solution of the detection device of the present invention, a magnet fixing assembly for fixing the magnet is provided on the horizontal sliding chassis, and the magnet is a U-shaped magnet.

[0019] As a preferred technical solution of the detection device of the present invention, the magnet fixing assembly includes a magnet base arranged below the magnet, and a magnet fixing seat located above the magnet.

[0020] As a preferred technical solution of the detection device of the present invention, the U-shaped magnet is fixed on the horizontal sliding chassis through a magnet fixing assembly, and the opening direction of the U-shaped magnet is vertically upward.

[0021] As a preferred technical solution of the detection device of the present invention, one end of the horizontal arm is movably connected to the vertical bracket, and the other end of the horizontal arm is movably connected to a probe;

[0022] When one end of the horizontal arm connected to the vertical bracket moves up and down, the probe connected to the other end of the horizontal arm moves up and down accordingly.

[0023] As a preferred technical solution of the detection device of the present invention, the detection table and the fixed base are arranged in parallel and spaced apart, and a second support member is arranged between the detection table and the fixed base.

[0024] As a preferred technical solution of the detection device of the present invention, the second support member includes four second support columns, and the four second support columns are respectively arranged at four corners of the sliding space between the detection table and the fixed base.

[0025] As a preferred technical solution of the detection device of the present invention, a detection tray rotating assembly is further provided between the detection table and the detection tray, and the detection tray rotating assembly is used to realize the self-rotation of the detection tray.

[0026] The detection tray rotating assembly of the detection device provided by the present invention is used to realize the self-rotation of the detection tray. When the detection tray rotates, it drives the magnetic target material in the detection tray to rotate; therefore, the detection device described in the present application does not need to be rotated manually, thereby avoiding scratches on the back of the magnetic target material product.

[0027] As a preferred technical solution of the detection device of the present invention, the detection tray rotating assembly includes a ball disc and a bearing located at the bottom of the ball disc for driving the ball disc to rotate;

[0028] A through hole is arranged in the middle of the detection table, and the bearing passes through the through hole from above the detection table.

[0029] As a preferred technical solution of the detection device of the present invention, the through hole is circular.

[0030] In a second aspect, the present invention provides a detection method using the detection device of the first aspect, the detection method comprising:

[0031] (1) Place the magnetic target material to be tested on the detection tray, and adjust the height of the probe by adjusting the position of the movable connection between the probe and the cross arm so that the distance between the probe and the surface of the magnetic target material is a set distance;

[0032] (2) Then, the horizontal sliding base is moved horizontally, thereby driving the vertical bracket, the cross arm, and the probe on the cross arm to move horizontally until the probe reaches a designated detection radius position above the magnetic target material on the detection tray;

[0033] (3) Rotate the test tray counterclockwise to drive the magnetic target to be tested to rotate counterclockwise, and each time independently rotate the set angle and record the test data;

[0034] (4) Remove the magnetic target material to be tested from the detection tray, record the original magnetic field strength data, and then calculate the PTF using the obtained test data and the original magnetic field strength data.

[0035] As a preferred technical solution of the detection method described in the present invention, the set spacing is 1.5 to 2.5 nm, for example, it can be 1.5 nm, 1.6 nm, 1.7 nm, 1.8 nm, 1.9 nm, 2.0 nm, 2.1 nm, 2.2 nm, 2.3 nm, 2.4 nm or 2.5 nm, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0036] Preferably, the set angle is 20-40°, for example, it can be 20°, 22°, 24°, 26°, 28°, 30°, 32°, 34°, 36°, 38° or 40°, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0037] Preferably, the magnetic target to be measured rotates counterclockwise 2 to 15 times, and 2 to 15 data are recorded.

[0038] The number of counterclockwise rotations of the magnetic target to be measured in the present invention is 2 to 15 times, for example, 2 times, 4 times, 6 times, 8 times, 10 times, 12 times, 14 times or 15 times, but is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0039] In the present invention, 2 to 15 data are recorded, for example, 2 times, 4 times, 6 times, 8 times, 10 times, 12 times, 14 times or 15 times, but it is not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

[0040] Preferably, the PTF calculation method is: divide each test data obtained by the test by the original magnetic field strength data and then multiply by percent.

[0041] As a preferred technical solution of the detection method of the present invention, the detection method comprises:

[0042] (1) The obtained detection device is installed, and the Hall probe of the Gaussmeter is used as the probe of the detection device. The Gaussmeter is zeroed and calibrated, and then the magnetic target to be tested is placed on the detection tray, and the height of the probe is adjusted by adjusting the position of the movable connection between the probe and the cross arm, so that the distance between the probe and the surface of the magnetic target is 1.5 to 2.5 nm;

[0043] (2) Then, the horizontal sliding base is moved horizontally, thereby driving the vertical bracket, the cross arm, and the probe on the cross arm to move horizontally until the probe reaches a designated detection radius position above the magnetic target material on the detection tray;

[0044] (3) Rotate the detection tray counterclockwise to drive the magnetic target to be tested to rotate counterclockwise 2 to 15 times, each time independently rotating 20 to 40 degrees and recording 2 to 15 test data;

[0045] (4) Remove the magnetic target material to be tested from the detection tray, record the original magnetic field strength data, and then calculate the PTF using the obtained test data and the original magnetic field strength data.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] (1) The detection device of the magnetic target material PTF provided by the present invention comprises a horizontal movable bracket, and a probe is movably connected to the horizontal arm of the horizontal movable bracket. When the horizontal movable bracket moves horizontally, the probe moves horizontally accordingly, thereby realizing the detection of any radial area of ​​the magnetic target material placed on the detection tray; in addition, since the probe is movably connected to the horizontal arm, when the horizontal arm moves up and down, the probe also moves up and down accordingly, and the distance between the probe and the detection table is adjustable. When the product is welded to obtain the corresponding finished product, it can also be placed on the detection tray for calibration, and products with different thicknesses can also be placed on the detection tray as magnetic target materials for detection;

[0048] (2) The detection tray rotating assembly of the detection device provided by the present invention is used to realize the self-rotation of the detection tray, and the detection tray drives the product in the detection tray to rotate when rotating; therefore, the detection device described in the present application does not need to be rotated manually, which avoids scratches on the back of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a schematic structural diagram of a detection device for a magnetic target material PTF in a specific embodiment of the present invention.

[0050] Figure 2 It is a schematic structural diagram of a fixed bracket, a detection tray rotating assembly and a detection tray in a specific embodiment of the present invention.

[0051] Figure 3 It is a schematic diagram of the structure of the horizontal movable bracket, the probe and the magnet in a specific embodiment of the present invention.

[0052] Figure 4 The figure is a top view of a detection tray in a specific embodiment of the present invention.

[0053] Figure 5It is a top view of a fixed base in a specific embodiment of the present invention.

[0054] Figure 6 It is a front view of a magnet base in a specific embodiment of the present invention.

[0055] Figure 7 It is a front view of a magnet fixing seat in a specific embodiment of the present invention.

[0056] Figure 8 FIG. 1 is a top view of a ball bearing disc in a specific embodiment of the present invention.

[0057] Among them, 1-detection tray 1; 2-probe 2; 3-magnet 3; 4-vertical bracket 4; 5-cross arm 5; 6-detection table 6; 7-fixed base 7; 8-horizontal sliding chassis 8; 9-vertical side panel 9; 10-top plate 10; 11-first support column 11; 12-magnet base 12; 13-magnet fixing seat 13; 14-second support column 14; 15-ball disc 15; 16-bearing 16; 17-through hole. DETAILED DESCRIPTION

[0058] It should be understood that, in the description of the present invention, the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0059] It should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0060] The technical solution of the present invention is further described below by specific implementation methods. It should be understood by those skilled in the art that the embodiments are only to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0061] In a specific embodiment, Figure 1 As shown, the present invention provides a detection device for magnetic target material PTF, the detection device comprising a horizontal movable bracket, a fixed bracket, a detection tray 1, a probe 2 and a magnet 3;

[0062] like Figure 3 As shown, the horizontal movable bracket includes a horizontal sliding base, a vertical bracket 4 connected to one end of the horizontal sliding base, and a cross arm 5 movably connected to the vertical bracket 4;

[0063] like Figure 2 As shown, the fixed support includes a detection table 6 arranged at intervals on the upper side along the vertical direction and a detection table 6 arranged on the lower side. Figure 5 The fixed base 7 shown, a sliding space is formed between the detection table 6 and the fixed base 7;

[0064] The detection tray 1 is placed on the detection table 6, the magnet 3 is fixed on the horizontal sliding base, and the probe 2 is located on the detection table 6. Figure 4 The detection tray 1 is shown above and is movably connected to the cross arm 5;

[0065] The horizontal sliding base is located in the sliding space above the fixed base 7 . When the horizontal sliding base slides horizontally, the probe 2 moves horizontally accordingly.

[0066] The detection device for the magnetic target material PTF provided by the present invention includes a horizontally movable bracket, and a probe 2 is movably connected to the cross arm 5 of the horizontally movable bracket. When the horizontally movable bracket moves horizontally, the probe 2 moves horizontally accordingly, thereby realizing the detection of any radial area of ​​the magnetic target material placed on the detection tray 1; in addition, since the probe 2 is movably connected to the cross arm 5, when the cross arm 5 moves up and down, the probe 2 also moves up and down accordingly, and the distance between the probe 2 and the detection table 6 is adjustable. When the product is welded to obtain the corresponding finished product, it can also be placed on the detection tray 1 for calibration, and products with different thicknesses can also be placed on the detection tray 1 as magnetic targets for detection.

[0067] Furthermore, the horizontal sliding base includes a horizontal sliding chassis 8, a vertical side panel 9 connected to one end of the horizontal sliding chassis 8 and perpendicular to the horizontal sliding chassis 8, and a top panel 10 connected to the vertical side panel 9 at one end and parallel to the horizontal sliding chassis 8; the vertical bracket 4 is arranged at one end of the surface of the top panel 10 and is perpendicular to the surface of the top panel 10.

[0068] Furthermore, a first support member is provided between the horizontal sliding chassis 8 and the top plate 10 .

[0069] Furthermore, the first support member includes two first support columns 11 .

[0070] Furthermore, a magnet fixing assembly for fixing the magnet 3 is provided on the horizontal sliding chassis 8, and the magnet 3 is a U-shaped magnet.

[0071] Furthermore, the magnet fixing assembly includes a Figure 6 The magnet base 12 shown in FIG. 1 and the magnet 3 located above the magnet 3 are Figure 7 The magnet fixing seat 13 is shown.

[0072] Furthermore, the U-shaped magnet is fixed on the horizontal sliding chassis 8 through a magnet fixing assembly, and the opening direction of the U-shaped magnet is vertically upward.

[0073] Furthermore, one end of the cross arm 5 is movably connected to the vertical bracket 4, and the other end of the cross arm 5 is movably connected to the probe 2;

[0074] When one end of the horizontal arm 5 connected to the vertical support 4 moves up and down, the probe 2 connected to the other end of the horizontal arm 5 moves up and down accordingly.

[0075] Furthermore, the detection table 6 and the fixed base 7 are arranged in parallel and at intervals, and a second supporting member is arranged between the detection table 6 and the fixed base 7.

[0076] Furthermore, the second support member includes four second support columns 14 , and the four second support columns 14 are respectively disposed at four corners of the sliding space between the detection table 6 and the fixed base 7 .

[0077] Furthermore, a detection tray 1 rotating assembly is provided between the detection table 6 and the detection tray 1 , and the detection tray 1 rotating assembly is used to realize the self-rotation of the detection tray 1 .

[0078] The detection tray 1 rotating assembly of the detection device provided by the present invention is used to realize the self-rotation of the detection tray 1. When the detection tray 1 rotates, it drives the magnetic target material in the detection tray 1 to rotate; therefore, the detection device described in the present application does not need to be rotated manually, thereby avoiding scratches on the back of the magnetic target product.

[0079] Furthermore, the detection tray 1 rotating assembly includes: Figure 8 The ball disc 15 shown, and the bearing 16 located at the bottom of the ball disc 15 for driving the ball disc 15 to rotate;

[0080] A through hole 17 is provided in the middle of the detection table 6 , and the bearing 16 passes through the through hole 17 from above the detection table 6 .

[0081] Furthermore, the through hole 17 is circular.

[0082] Example

[0083] This embodiment provides a detection device for magnetic target material PTF, the detection device comprising a horizontal movable bracket, a fixed bracket, a detection tray 1, a probe 2 and a U-shaped magnet;

[0084] The horizontal movable bracket comprises a horizontal sliding base, a vertical bracket 4 connected to one end of the horizontal sliding base, and a horizontal arm 5 movably connected to the vertical bracket 4;

[0085] The horizontal sliding base comprises a horizontal sliding chassis 8, a vertical side plate 9 connected to one end of the horizontal sliding chassis 8 and perpendicular to the horizontal sliding chassis 8, and a top plate 10 connected to one end of the vertical side plate 9 and parallel to the horizontal sliding chassis 8. A first support member is arranged between the horizontal sliding chassis 8 and the top plate 10, and the first support member comprises two first support columns 11; the vertical bracket 4 is arranged at one end of the surface of the top plate 10 and is perpendicular to the surface of the top plate 10;

[0086] The horizontal sliding chassis 8 is provided with a magnet fixing assembly for fixing the U-shaped magnet, the U-shaped magnet is fixed to the horizontal sliding chassis 8 through the magnet fixing assembly, and the opening direction of the U-shaped magnet is vertically upward;

[0087] One end of the cross arm 5 is movably connected to the vertical bracket 4, and the other end of the cross arm 5 is movably connected to the probe 2; when the end of the cross arm 5 connected to the vertical bracket 4 moves up and down, the probe 2 connected to the other end of the cross arm 5 moves up and down accordingly;

[0088] The fixed bracket includes a detection table 6 arranged at intervals at the top along the vertical direction and a fixed base 7 arranged at the bottom, the detection table 6 and the fixed base 7 are arranged in parallel and at intervals, a second support member is arranged between the detection table 6 and the fixed base 7, and a sliding space is formed between the detection table 6 and the fixed base 7; the second support member includes four second support columns 14, and the four second support columns 14 are respectively arranged at the four corners of the sliding space between the detection table 6 and the fixed base 7;

[0089] The detection tray 1 is placed on the detection table 6, and a detection tray 1 rotating assembly is also provided between the detection table 6 and the detection tray 1, and the detection tray 1 rotating assembly includes a ball disc 15, and a bearing 16 located at the bottom of the ball disc 15 for driving the ball disc 15 to rotate, and a circular through hole 17 is provided in the middle of the detection table 6, and the bearing 16 passes through the circular through hole 17 from the top of the detection table 6; the detection tray 1 rotating assembly is used to realize the rotation of the detection tray 1, and the bearing 16 of the detection tray 1 rotating assembly is connected to a driver, and the driver drives the bearing 16 to rotate, thereby driving the ball disc 15 to rotate, thereby realizing the rotation of the detection tray 1 and the magnetic target to be tested;

[0090] The horizontal sliding base is located in the sliding space above the fixed base 7. When the horizontal sliding base slides horizontally, the vertical bracket 4 connected to the horizontal sliding base moves horizontally accordingly, and the cross arm 5 movably connected to the vertical bracket 4 moves horizontally accordingly, thereby causing the probe 2 movably connected to the cross arm 5 to move horizontally accordingly.

[0091] Application Example 1

[0092] This application example provides a detection method using the detection device described in the above embodiment, and the detection method includes:

[0093] (1) The obtained detection device is installed, and the Hall probe 2 of the Gaussmeter is used as the probe 2 of the detection device. The Gaussmeter is zeroed and calibrated, and then the magnetic target to be tested is placed on the detection tray 1. The height of the probe 2 is adjusted by adjusting the position of the movable connection between the probe 2 and the cross arm 5, so that the distance between the probe 2 and the surface of the magnetic target is 2.0 nm;

[0094] (2) The horizontal sliding base is then moved horizontally, thereby driving the vertical support 4, the horizontal arm 5 and the probe 2 on the horizontal arm 5 to move horizontally until the probe 2 reaches a designated detection radius position above the magnetic target material on the detection tray 1;

[0095] (3) Rotate the detection tray 1 counterclockwise again, thereby driving the magnetic target to be tested to rotate counterclockwise 12 times, each time independently rotating 30° and recording 12 test data;

[0096] (4) The magnetic target material to be tested is removed from the detection tray 1, and the original magnetic field strength data is recorded. The PTF is then calculated using the obtained test data and the original magnetic field strength data.

[0097] Application Example 2

[0098] This application example provides a detection method using the detection device described in the above embodiment, and the detection method includes:

[0099] (1) The obtained detection device is installed, and the Hall probe 2 of the Gaussmeter is used as the probe 2 of the detection device. The Gaussmeter is zeroed and calibrated, and then the welded magnetic target to be tested is placed on the detection tray 1. The height of the probe 2 is adjusted by adjusting the position of the movable connection between the probe 2 and the cross arm 5, so that the distance between the probe 2 and the surface of the magnetic target is 1.5 nm;

[0100] (2) The horizontal sliding base is then moved horizontally, thereby driving the vertical support 4, the horizontal arm 5 and the probe 2 on the horizontal arm 5 to move horizontally until the probe 2 reaches a designated detection radius position above the magnetic target material on the detection tray 1;

[0101] (3) Rotate the detection tray 1 counterclockwise again, thereby driving the magnetic target to be tested to rotate counterclockwise twice, each time independently rotating 60° and recording two test data;

[0102] (4) The magnetic target material to be tested is removed from the detection tray 1, and the original magnetic field strength data is recorded. The PTF is then calculated using the obtained test data and the original magnetic field strength data.

[0103] Application Example 3

[0104] This application example provides a detection method using the detection device described in the above embodiment, and the detection method includes:

[0105] (1) The obtained detection device is installed, and the Hall probe 2 of the Gaussmeter is used as the probe 2 of the detection device. The Gaussmeter is zeroed and calibrated, and then the magnetic target to be tested is placed on the detection tray 1. The height of the probe 2 is adjusted by adjusting the position of the movable connection between the probe 2 and the cross arm 5, so that the distance between the probe 2 and the surface of the magnetic target is 2.5 nm;

[0106] (2) The horizontal sliding base is then moved horizontally, thereby driving the vertical support 4, the horizontal arm 5 and the probe 2 on the horizontal arm 5 to move horizontally until the probe 2 reaches a designated detection radius position above the magnetic target material on the detection tray 1;

[0107] (3) Rotate the detection tray 1 counterclockwise again, thereby driving the magnetic target to be tested to rotate counterclockwise 15 times, each time independently rotating 20° and recording 15 test data;

[0108] (4) The magnetic target material to be tested is removed from the detection tray 1, and the original magnetic field strength data is recorded. The PTF is then calculated using the obtained test data and the original magnetic field strength data.

[0109] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention are within the protection scope and disclosure scope of the present invention.

Claims

1. A detection device for magnetic target material PTF, characterized in that: The detection device includes a horizontal movable bracket, a fixed bracket, a detection tray, a probe and a magnet; The horizontal movable bracket comprises a horizontal sliding base, a vertical bracket connected to one end of the horizontal sliding base, and a horizontal arm movably connected to the vertical bracket; The fixed bracket includes a detection table arranged at intervals on the upper side along the vertical direction and a fixed base arranged on the lower side, and a sliding space is formed between the detection table and the fixed base; The detection tray is placed on the detection table, the magnet is fixed on the horizontal sliding base, and the probe is located above the detection tray and is movably connected to the cross arm; The horizontal sliding base is located in the sliding space above the fixed base. When the horizontal sliding base slides horizontally, the probe moves horizontally accordingly.

2. The detection device according to claim 1, characterized in that: The horizontal sliding base comprises a horizontal sliding chassis, a vertical side plate connected to one end of the horizontal sliding chassis and perpendicular to the horizontal sliding chassis, and a top plate connected to the vertical side plate at one end and parallel to the horizontal sliding chassis; the vertical bracket is arranged at one end of the surface of the top plate and is perpendicular to the surface of the top plate; Preferably, a first support member is provided between the horizontal sliding chassis and the top plate.

3. The detection device according to claim 2, characterized in that: The horizontal sliding chassis is provided with a magnet fixing assembly for fixing the magnet, and the magnet is a U-shaped magnet; Preferably, the magnet fixing assembly comprises a magnet base disposed below the magnet, and a magnet fixing seat disposed above the magnet; Preferably, the U-shaped magnet is fixed on the horizontal sliding chassis through a magnet fixing assembly, and the opening direction of the U-shaped magnet is vertically upward.

4. The detection device according to any one of claims 1 to 3, characterized in that: One end of the cross arm is movably connected to the vertical bracket, and the other end of the cross arm is movably connected to a probe; When one end of the horizontal arm connected to the vertical bracket moves up and down, the probe connected to the other end of the horizontal arm moves up and down accordingly.

5. The detection device according to any one of claims 1 to 4, characterized in that: The detection table and the fixed base are arranged in parallel and spaced apart, and a second supporting member is arranged between the detection table and the fixed base.

6. The detection device according to any one of claims 1 to 5, characterized in that: A detection tray rotating assembly is also provided between the detection table and the detection tray, and the detection tray rotating assembly is used to realize the self-rotation of the detection tray.

7. The detection device according to claim 6, characterized in that: The detection tray rotating assembly includes a ball disc and a bearing located at the bottom of the ball disc for driving the ball disc to rotate; A through hole is provided in the middle of the detection table, and the bearing passes through the through hole from above the detection table; Preferably, the through hole is circular.

8. A detection method using the detection device according to any one of claims 1 to 7, characterized in that: The detection method comprises: (1) Place the magnetic target material to be tested on the detection tray, and adjust the height of the probe by adjusting the position of the movable connection between the probe and the cross arm so that the distance between the probe and the surface of the magnetic target material is a set distance; (2) Then, the horizontal sliding base is moved horizontally, thereby driving the vertical bracket, the cross arm, and the probe on the cross arm to move horizontally until the probe reaches a designated detection radius position above the magnetic target material on the detection tray; (3) Rotate the test tray counterclockwise to drive the magnetic target to be tested to rotate counterclockwise, and each time independently rotate the set angle and record the test data; (4) Remove the magnetic target material to be tested from the detection tray, record the original magnetic field strength data, and then calculate the PTF using the obtained test data and the original magnetic field strength data.

9. The detection method according to claim 8, characterized in that: The set spacing is 1.5 to 2.5 nm; Preferably, the setting angle is 20 to 40°; Preferably, the magnetic target to be measured rotates counterclockwise 2 to 15 times, and 2 to 15 data are recorded.

10. The detection method according to claim 8 or 9, characterized in that: The detection method comprises: (1) The obtained detection device is installed, and the Hall probe of the Gaussmeter is used as the probe of the detection device. The Gaussmeter is zeroed and calibrated, and then the magnetic target to be tested is placed on the detection tray, and the height of the probe is adjusted by adjusting the position of the movable connection between the probe and the cross arm, so that the distance between the probe and the surface of the magnetic target is 1.5 to 2.5 nm; (2) Then, the horizontal sliding base is moved horizontally, thereby driving the vertical bracket, the cross arm, and the probe on the cross arm to move horizontally until the probe reaches a designated detection radius position above the magnetic target material on the detection tray; (3) Rotate the detection tray counterclockwise to drive the magnetic target to be tested to rotate counterclockwise 2 to 15 times, each time independently rotating 20 to 40 degrees and recording 2 to 15 test data; (4) Remove the magnetic target material to be tested from the detection tray, record the original magnetic field strength data, and then calculate the PTF using the obtained test data and the original magnetic field strength data.

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