706results about "Magnetic bodies" patented technology

The invention discloses a method and a device for controlling magnetizing uniformity of a permanent magnet rotor, relates to the technical field of permanent magnet rotors, and aims to evaluate the risk of uniformity during magnetizing of the permanent magnet rotor in advance and provide effective early warning for magnetizing operation by analyzing temperature change data, shape data and surface defect data and constructing a magnetic field response capability coefficient. Based on monitoring of the internal magnetic domain data and the magnetic data of the permanent magnet rotor in the step S3, the magnetic field stability of the rotor can be dynamically analyzed in combination with the influence of an external magnetic field generated by a magnetizing source on magnetic domain alignment. The comprehensive magnetic performance stability index is generated by comprehensively considering the magnetic field response capability coefficient and the magnetizing state prediction model, and a scientific basis is provided for control and optimization in the subsequent magnetizing process. Intelligent control and optimization are carried out, grade scoring is carried out by setting a risk threshold value R and combining the comprehensive magnetic performance stability index, the magnetizing operation effect can be accurately evaluated, and corresponding control measures are taken under different grades.

The invention relates to a multi-pole magnetic field magnetizing test method and a spiral winding group thereof, and relates to the field of automatic magnetizing technology, and the method comprises the steps: constructing a test model, importing design parameters of a magnet to be tested, determining a multi-pole magnetic field distribution theoretical model, and defining a magnetic pole region and a key feature contour line; acquiring magnetic field data, scanning the surface of the magnetized magnet by using an array probe, and acquiring magnetic field intensity actual measurement data of a multi-dimensional coordinate; matching a magnetic pole contour, comparing an actually measured contour line with a theoretical contour line, and establishing sampling point mapping; correcting the deviation data, screening the deviation sampling points exceeding the threshold value, and determining magnetizing process adjustment parameters; and evaluating the magnetizing efficiency, carrying out iterative magnetizing based on the correction parameters, and generating an evaluation report containing indexes such as magnetic field uniformity and the like. The method has the effect of improving the magnetic field intensity and stability of the magnet during orientation magnetization.

The utility model discloses a sagger vibration demagnetizing device which comprises a demagnetizing assembly and a vibration assembly, and the demagnetizing assembly comprises a cover plate and a magnet fixed to the cover plate; the vibration assembly is arranged below the cover plate and comprises a supporting plate, a vibrator and a jacking mechanism, the supporting plate is used for supporting a sagger, the vibrator is fixed to the supporting plate and used for vibrating the sagger supported on the supporting plate so that materials in the sagger can be filled and leveled up, and the jacking mechanism drives the supporting plate to be close to the cover plate. Therefore, the cover plate abuts against and covers the opening of the sagger. According to the sagger vibration demagnetizing device, the sagger is driven by the jacking mechanism to move towards the cover plate, so that the cover plate can cover the opening of the sagger during vibration, dust raising is prevented, and the situation that more materials are vibrated out of the sagger is prevented.

The utility model belongs to the technical field of magnetizing, and discloses a multi-pole magnetic ring magnetizing device which is characterized in that a rotating plate is rotatably connected to a first supporting plate around the central axis of the rotating plate; the fixed plate is fixedly connected to the first supporting plate and stacked on the rotating plate. The multiple positioning magnetizing structures are distributed at intervals and are all slidably connected to the fixing plate. And the positioning magnetizing structure can magnetize the multi-pole magnetic ring. The rotating plate is configured to drive the multiple positioning magnetizing structures to be synchronously close to or away from each other when rotating around the central axis of the rotating plate. And when the plurality of positioning magnetizing structures are close to each other, the multi-pole magnetic ring can be clamped among the plurality of positioning magnetizing structures and is supported on the fixed plate or the rotating plate. The multi-pole magnetic ring can be accurately rotated to an optimal magnetizing state, so that a plurality of magnetic poles of the multi-pole magnetic ring are accurately in one-to-one correspondence with the distribution positions of a plurality of positioning magnetizing structures, and each magnetic pole of the multi-pole magnetic ring can be accurately magnetized. And the working performance of the multi-pole magnetic ring magnetizing device is effectively improved.

The invention relates to the technical field of magnetic shielding, and discloses a self-adaptive active adjustment type magnetic shielding device demagnetization circuit and device, and a control acquisition system, which are used for comparing a residual magnetism state with a preset expected value and generating a control instruction; the energy output identification system is used for outputting an alternating current degaussing signal according to the control instruction to perform degaussing, outputting an excitation pulse signal to perform residual magnetism detection, identifying a zero crossing point of the alternating current degaussing signal and realizing mode switching of degaussing and residual magnetism detection; and the magnetic shielding device is used for demagnetizing under the action of the alternating current demagnetizing signal and feeding back the residual magnetism state of the preset feature point under the action of the excitation pulse signal. The demagnetization is interrupted at the preset feature points in the demagnetization process, the real-time residual magnetism state is collected, and the demagnetization parameter at the next moment is adjusted after the real-time residual magnetism state is compared with the preset residual magnetism expected value, so that the problem of low efficiency due to the fact that the demagnetization parameter needs to be reset after the process is finished is solved, and the demagnetization efficiency and accuracy are greatly improved.

A disclosure relates to methods and apparatus for processing an elongated body for a medical instrument. In one arrangement, targeted processing is applied to each of one or more local portions of the elongated body to cause a change in a room temperature magnetic property of material in each local portion, thereby causing the one or more local portions to have different room temperature magnetic properties than other portions of the elongated body.

The invention relates to the technical field of magnetic shielding, and provides a demagnetization method and device for a magnetic shielding device, electronic equipment and a readable storage medium, and the method comprises the steps: collecting a feedback circuit signal of a target magnetic shielding device through a voltage and current collection unit; analyzing the feedback circuit signal by using a signal acquisition processor, determining the current degaussing demand of the target magnetic shielding device, and calculating a degaussing pulse parameter matched with the current degaussing demand; a pulse generating unit is used for generating a target pulse with the adjustable pulse width according to the degaussing pulse parameters, the target pulse is a bipolar square wave pulse, and the adjusting interval of the pulse width comprises the millisecond level and the nanosecond level; and utilizing a pulse switching unit to act the target pulse on the target magnetic shielding device, so that the target magnetic shielding device is subjected to magnetic saturation or magnetic fading. According to the technical scheme provided by one or more embodiments of the invention, the average power demand of the degaussing power supply can be reduced, and the degaussing effect can be improved.

The invention relates to the technical field of magnetizing devices, in particular to an automatic magnetizing device for a magnetic shoe. Comprising a supporting rod connected to the top of a bottom plate; the material guiding frame is connected to the top of the supporting rod, a strip-shaped hole is formed in the bottom of the material guiding frame, the material guiding frame further penetrates through the magnetizing table, a notch is formed in the rear side of the material guiding frame, and the notch is in contact and aligned with the discharging opening of the linear conveying mechanism; the cutters are symmetrically connected to the material guide frame; the mounting plate is connected to the side surface of the material guide frame; the first electric push rod is mounted on the side surface of the mounting plate; and the first hollow plate is connected to a telescopic rod of the first electric push rod. Through cooperation of the first electric push rod, the first hollow plate and the air suction assembly, a plastic gasket can be automatically and accurately inserted between two tile-shaped magnetic blanks, then the plastic gasket can be cut off through shearing cooperation of a push plate and a cutter, the tile-shaped magnetic blanks and the plastic gasket can automatically form a composite laminated structure, manual operation is not needed, and the production efficiency is improved. And the working efficiency can be improved.

The magnetizing system comprises a tray, a positioning chuck, a tip cone piece and a magnetizing head, a magnetic induction unit is arranged in the magnetizing head, the rotor is driven by the positioning chuck to rotate, the tip cone piece abuts against the other end of the rotor, the system comprises a parameter initialization module, a magnetizing parameter database is loaded, and initial parameters are preset; the magnetizing simulation calculation module is used for obtaining pre-estimated parameters such as magnetizing time through finite element simulation based on the magnetic induction intensity; the magnetic uniformity detection module is used for monitoring and calculating the magnetizing uniformity in real time; and the parameter dynamic regulation and control module is used for regulating the rotating speed of the rotor according to the uniformity and regulating and controlling the magnetizing current through a temperature sensor and a mapping model. The problems that in the magnetizing process of an existing permanent magnet motor rotor, magnetizing uniformity is insufficient, a real-time monitoring and dynamic adjusting mechanism is lacked, and the magnetizing quality is unstable and positioning precision is poor due to the fact that the magnetizing quality is prone to being affected by temperature are solved.

The present invention discloses a magnetizing device for inner and outer circular monopole radiation magnetic rings, belonging to the technical field of magnetizing permanent magnetic materials. The present invention comprises an outer ring fixture and an inner ring fixture arranged in the inner cavity of the outer ring fixture, and a placement area for the magnetic ring to be magnetized is reserved between the inner and outer ring fixtures; wherein, the inner and outer ring fixtures both comprise a plurality of iron cores and magnetizing coils wound on the iron cores, and the winding rule of the magnetizing coils is implemented according to the right-hand screw rule, and the winding directions of the magnetizing coils of the inner and outer ring fixtures are consistent and arranged in series. When the pulsed electric excitation magnetic field is applied, a radiation magnetic field with N / S being consistent in the radial direction is formed in the placement area, so that the magnetic ring can be saturated magnetized to achieve the optimal magnetic properties.

The magnetizing coil conveying and positioning mechanism of the magnetizer comprises a machine table plate, a magnetizing coil, a guide moving structure and a locking mechanism, a sliding way is formed in the machine table plate, and a blocking piece is arranged at one end of the sliding way; the magnetizing coil is arranged on the slide way in a sliding mode and comprises a bottom plate and a coil body installed on the bottom plate, and the bottom plate is matched with the slide way to be arranged on the machine table plate in a sliding mode; the guide moving structure is installed on the bottom plate and used for adjusting the bottom plate to ascend and descend relative to the machine table plate. The locking mechanisms are installed on the bottom plate and located on the two sides of the sliding way, and the locking mechanisms are used for locking the bottom plate of the magnetizing coil to the machine table plate after the magnetizing coil slides to be blocked by the blocking piece and the bottom plate falls on the machine table plate. The invention further provides a magnetizing coil conveying and positioning method of the magnetizer. By adopting the magnetizing coil conveying and positioning mechanism provided by the invention, the replacement operation of the magnetizing coil is simplified, and the replacement efficiency is improved.

The invention discloses a magnetizing and surface magnetic detection all-in-one machine for a motor rotor. The magnetizing and surface magnetic detection all-in-one machine comprises a workbench; a working position is arranged on the working table and is used for placing a magnetizing coil assembly; a rotor jacking device is further installed at the position, corresponding to the working position, of the bottom of the workbench, and the rotor jacking device partially penetrates through the magnetizing coil assembly. A downward pressing device is further installed at the position, corresponding to the working position, of the top of the workbench. A supporting frame is installed at the position, close to the working position, of the top of the workbench, and a surface magnetic detection device and an appearance detection device are further installed on the supporting frame. The magnetizing and surface magnetic detection functions are integrated, the occupied area of equipment is reduced, the purchase and maintenance cost of the equipment is reduced, meanwhile, the magnetizing and detection processes can be seamlessly connected through the integrated design, the material carrying and waiting time in the intermediate link is shortened, and the production efficiency and economic benefits are further improved.

The invention discloses a permanent magnet semi-direct drive wind power motor rotor magnetic pole assembly magnetizing method and device, and belongs to the technical field of wind power generator assembly, and the method comprises the following steps: a, completing the assembly of a rotor; b, positioning the rotor through a transition positioning flange; c, starting a magnetizer, and carrying out saturated magnetization on a pair of magnetic poles of the rotor; d, after magnetizing is completed, a magnetizing magnetic flux measuring coil measures and records magnetic fluxes of the two poles; e, rotating the rotor by an angle of one pole through the rotor rotating platform, and repeatedly completing magnetizing and magnetic flux detection of the next pair of magnetic poles of the rotor; and f, after all the magnetic poles on the rotor are magnetized, the rotor is rotated by one circle through the rotor rotating platform, and the outer circle surface magnetic distribution waveform of the rotor is scanned. Through cooperation of the magnetizing platform portal frame and the symmetrical double magnetizing heads, the problem of rotor stress at the moment of magnetizing can be solved, the magnetizing efficiency can be improved, and the magnetizing platform is suitable for overall magnetizing and batch automatic production of the permanent magnet semi-direct-drive wind driven generator rotor.

The present invention provides a rotor magnetizing device and magnetizing method. The rotor magnetizing device includes a base and a turntable structure. The turntable rotates, driving the rotor on the turntable to enter various processing stations in sequence. The processing stations include a loading and unloading integrated station, a magnetizing station, and a surface magnetism detection station. The loading and unloading integrated station is equipped with a material receiving mechanism and a detection mechanism. The material receiving mechanism receives the rotor and transfers it to the turntable. The detection mechanism includes a height measuring unit and a direction measuring unit. The height measuring unit detects the height of the rotor, and the direction measuring unit detects the circumferential orientation of the rotor. The loading and unloading integrated station is equipped with a demagnetization mechanism to demagnetize the ends of the magnetized rotor. The magnetizing station is equipped with a magnetizing box and a rotor positioning mechanism. The rotor positioning mechanism locks the rotor's orientation and lifts the rotor to the desired position within the magnetizing box. The magnetizing box magnetizes the rotor. The surface magnetism detection station performs surface magnetism detection on the rotor. The rotor magnetizing device provided by the present invention simplifies the structure and improves magnetization efficiency and accuracy.

The invention belongs to the technical field of magnet ring magnetizing, relates to motor processing and manufacturing, and discloses a magnet ring magnetizing clamp and a using method thereof. Wherein in the magnetic ring magnetizing clamp, a left oblique inner stator and an outer stator left oblique iron core are positioned and assembled, and a right oblique inner stator and an outer stator right oblique iron core are positioned and assembled, so that a V-shaped magnetic ring magnetizing clamp can be formed; or, the left oblique inner stator and the outer stator right oblique iron core are positioned and assembled, and the right oblique inner stator and the outer stator left oblique iron core are positioned and assembled, so that the W-shaped magnetic ring magnetizing clamp can be formed. According to the technical scheme, magnetizing of the magnetic ring can be achieved, the magnetic pole of the magnetized magnetic ring is in a V shape or a W shape, the skewed pole effect is better, and compared with an existing traditional single-side skewed pole, operation is more stable, and noise is lower.

The utility model belongs to the technical field of magnetizing equipment, and particularly discloses a multi-head automatic magnetizer which comprises a machine body, a rotating disc assembly, a lifting material platform assembly and a limiting assembly, a loading and unloading area and a magnetizing area are arranged above the machine body, the rotating disc assembly is arranged between the loading and unloading area and the magnetizing area, and the rotating disc assembly comprises a rotating disc body and a first driving motor. The first driving motor is fixed to the machine body, the rotating disc body is fixed to a driving shaft of the first driving motor, a plurality of grooves are evenly formed in the side edge of the rotating disc body, and a lifting material table assembly is arranged on the side edge of each groove. The workpieces loaded in the loading and unloading area are transferred to the magnetizing area to be magnetized through the rotating disc assembly; the lifting material table assembly comprises a telescopic motor, a fixing plate, a connecting rod and a containing table, the workpiece is fixed through the limiting assembly, then the telescopic motor is used for controlling the workpiece to move up and down, and the workpiece is controlled to be magnetized.

The application discloses a device and method for magnetizing a neodymium iron boron magnet, which comprises a magnetizer, a lamination conveying channel, a lamination mechanism and a lamination set sheet removing mechanism. The lamination set sheet removing mechanism comprises a visual detection system, at least two sheet removing plates and a driving mechanism. The visual detection system is arranged above the lamination conveying channel to identify whether there is a missing gasket between adjacent blank sheets in real time. At least two sheet removing plates with switchable postures are arranged. When an extra blank sheet is detected, a clutch transmission selectively connects the driving shaft with a corresponding number of sheet removing plates. The sheet removing plates are switched from an initial posture to a sheet removing posture, and the extra blank sheet is removed from the lamination conveying channel. The device realizes automatic identification and accurate removal of stacking defects, and solves the technical problems in the prior art, i.e., difficulty in separating after magnetization, influence on sheet separation efficiency and easy breakage of blank sheets due to the lack of gaskets between adjacent blank sheets.

This application provides a dynamic collaborative control method for the winding tension and turn spacing of enameled wire in demagnetizing coils. This method is designed for the winding of demagnetizing coils for display tubes. It achieves real-time coordination and linkage between tension and turn spacing throughout the winding process, ensuring that different tension stages correspond to the most suitable spacing distance. This guarantees that the entire coil is uniformly arranged and has a dense structure from beginning to end. This invention effectively solves the core problem of uneven turn spacing caused by tension fluctuations in precision winding, which in turn leads to magnetic field distribution distortion and decreased coil structural stability. It achieves full-link adaptive collaborative optimization of tension, spacing, material properties, and electromagnetic performance, ensuring high consistency and high stability winding quality.

Embodiments of the present disclosure provide a demagnetization device and a demagnetization method for a Hall current sensor. The demagnetization device includes a reference sensor and a signal processing unit. When the magnetic field signal corresponding to the primary current flowing through the primary current bus collected by the reference sensor is zero and the magnetic flux of the magnetic core component detected by the Hall chip is non-zero under the condition that the primary current bus is powered off, the signal processing unit generates a demagnetization signal with a decreasing amplitude and alternating positive and negative directions and applies the demagnetization signal to the primary current bus, so that the hysteresis magnetic field of the magnetic core component gradually decreases until it becomes zero to achieve demagnetization. Compared with related demagnetization technologies such as heating demagnetization or applying a reverse magnetic field, it has the advantages of simple structure, convenient operation, and good demagnetization effect.

The present application relates to the field of magnetization processing of signal wheels, and particularly to a magnetization device for magnetizing a magnetic signal wheel, including a support frame, a magnetization table mechanism disposed below the support frame for placing the magnetic signal wheel, a magnetization head mechanism located directly above the magnetization table mechanism for performing magnetization operations on the magnetic signal wheel, a drive source installed on the support frame for driving the magnetization head mechanism to lift and lower, and a zero position adjustment mechanism disposed on the magnetization table mechanism for precisely positioning the magnetic signal wheel to be magnetized. The present application has the effect of improving the magnetization accuracy and ensuring the consistency of the magnetization angle of each magnetic signal wheel.

The application discloses a mold capable of opening and closing a magnetic field, which comprises a lower magnetic conducting block, a permanent magnet arranged on the lower magnetic conducting block, and a non-magnetic conducting cavity assembly, wherein the cavity assembly is provided with a cavity penetrating from top to bottom; the permanent magnet is arranged around the cavity assembly; the lower magnetic conducting block is provided with a first magnetic conducting part close to the lower part of the cavity; a magnetic conductor is arranged on the lower mold assembly and can move close to or away from the permanent magnet; the upper mold assembly and the lower mold assembly perform a mold closing action; the second magnetic conducting part is close to the upper part of the cavity; material enters the cavity to be formed; the magnetic conductor moves outward; the permanent magnet forms a magnetic circuit between the magnetic conducting parts to magnetically orient the material in the cavity; during mold opening, the magnetic conductor moves to the outside of the permanent magnet and the lower magnetic conducting block to shield the magnetic circuit between the magnetic conducting parts; the application has the advantages of better magnetic field orientation effect on the material and convenient product removal; and the application relates to the technical field of magnet forming molds.

The utility model discloses an automatic magnetizer for a motor rotor, which comprises a feeding and sorting mechanism and a synchronous magnetizing mechanism, a transfer mechanism is arranged on the inner side of the middle part of the feeding and sorting mechanism, the synchronous magnetizing mechanism and a detection mechanism are arranged between the feeding and sorting mechanism and the transfer mechanism, the detection mechanism is positioned behind the synchronous magnetizing mechanism, and the synchronous magnetizing mechanism is connected with the synchronous magnetizing mechanism. The feeding and sorting mechanism comprises a mounting box, a feeding guide plate is fixedly mounted at the front end of the upper end face of the mounting box, four guide grooves are fixedly mounted at the rear end of the upper end face of the mounting box, sorting air cylinders are rotationally connected to the lower end faces of the guide grooves, and movable sorting grooves are mounted at the output ends of the sorting air cylinders. The synchronous magnetizing mechanism comprises two supporting division bars, and the two supporting division bars are fixedly connected with the mounting box. By automatically transferring, magnetizing, detecting and sorting the motor rotor, the magnetizing efficiency of the motor rotor can be effectively improved, and the quality of the motor rotor can be sorted.

The invention discloses a large circular ring magnetic steel magnetizing device and a production process, the magnetizing device comprises a magnetizing mechanism, a positioning mechanism and a monitoring control mechanism, the magnetizing mechanism comprises a rotation driving part, a turntable, a plurality of first electromagnets, a plurality of second electromagnets and an electrifying assembly; the positioning mechanism is used for transferring to-be-magnetized large circular ring magnetic steel to a position above the turntable, concentric with the turntable and located between the first electromagnet and the second electromagnet; the monitoring control mechanism comprises a Hall sensor assembly and a controller. According to the application, due to the special layout of the first electromagnet and the second electromagnet in the magnetizing mechanism and the positive and negative rotation mode of the turntable, each part of the large circular ring magnetic steel can be uniformly acted by a magnetic field in the magnetizing process. And the angle between the adjacent electromagnets is matched with the rotating angle of the turntable, so that the magnetization degrees of all points in the circumferential direction of the magnetic steel are consistent, and the problem of insufficient or excessive local magnetization is avoided.

A method for magnetizing a soft magnet in a rotor of a variable flux memory motor (VFMM) includes generating a first pulse of current having a duration of greater than or equal to 0.1 milliseconds (ms) and less than or equal to 2 ms, and applying the first pulse to a stator winding of the VFMM to set the magnetization state of the soft magnet to a first magnetization state.

The utility model discloses an auxiliary fixture for magnetizing a tile-shaped magnet, which is used for clamping a magnetic shoe to be magnetized and comprises a loading frame for storing the magnetic shoe, a placing groove for storing the magnetic shoe is arranged in the loading frame, and a clamping and positioning mechanism for preventing the magnetic shoe from shifting is arranged in the loading frame. According to the auxiliary clamp used for magnetizing the tile-shaped magnet, the magnetic tile can be conveniently placed in the containing groove of the loading frame by pulling the connecting plate, after the connecting plate is loosened, the connecting plate is automatically restored to the initial position through resilience force of the first spring, the magnetic tile is effectively limited and prevented from moving or falling off in the loading frame, and the magnetic tile magnetizing efficiency is improved. According to the magnetic shoe magnetizing device, the stability before magnetizing is ensured, stable clamping of a magnetic shoe can be achieved under the action of clamping and positioning, and the phenomenon that the position of the magnetic shoe changes at will in the magnetizing process is effectively avoided. And the magnetic shoe is stably clamped in the loading frame, so that a powerful guarantee is provided for subsequent magnetizing operation.

The invention belongs to the technical field of degaussing, and relates to a ship winding degaussing current solving method based on a gradient tensor, which comprises the following steps: acquiring the magnetic gradient tensor of a plane ship when coils are not electrified; respectively performing simulation electrification on the winding coils to obtain the magnetic gradient tensor of the electrified measurement plane; and calculating an efficiency matrix of the magnetic gradient tensor excited by the unit current. The gradient of the geomagnetic field is extremely small, direct detection of the magnetic gradient tensor of the ship and the electrified coil can better reflect the magnetic characteristics of the ship and the coil compared with detection of a magnetic vector, and better resolution is achieved for magnetic field changes caused by magnetic anomalies; under the motion platform, the magnetic gradient tensor is insensitive to the attitude angle error, and more accurate detection data can be obtained; in addition, the gradient tensor is weak in response to time-varying geomagnetic disturbance, and has higher anti-interference capability. Therefore, according to the method, the accuracy of ship magnetic field modeling and degaussing current calculation is improved, and the magnetic stealth performance of a ship facing high-sensitivity magnetic gradient detection equipment is enhanced.

A sampling pipe (7) of a sampling arrangement (6) for taking a sample from drilling dust flowing in a dust removal pipe (5) of a drilling apparatus, at an end of which sampling pipe (7) there is a suction opening (8) which is arranged to be positioned in the dust removal pipe (5) of the drilling apparatus to suck drilling dust into the sampling pipe (7). The sampling pipe (7) comprises a suction pipe (10) into which the drilling dust of the dust removal pipe (5) is arranged to be conveyed via the suction opening (8) of the sampling pipe (7), and a coil (11) connectable to alternating current and wound around the suction pipe (10).

The continuous magnetizing equipment comprises a base, a positioning disc, a blanking hopper, a magnetizing coil, a material barrel and a motor, a circular groove is formed in the middle of the top end face of the base, a blanking hole penetrating through the base is formed in one side of the circular groove, the positioning disc is rotationally connected into the circular groove, the motor and the blanking hopper are arranged on the bottom end face of the base, and the magnetizing coil is arranged in the blanking hopper. The position, corresponding to the discharging hole, of the discharging hopper is fixedly connected with the base, an output shaft of the motor penetrates through the base and is fixedly connected with the center of the positioning disc, the outer edge of the positioning disc is provided with a plurality of U-shaped openings distributed at equal angles, the U-shaped openings are used for placing cylindrical magnets for positioning, and one side of the top end of the base is provided with a magnetizing coil corresponding to the U-shaped openings. A material barrel corresponding to the U-shaped opening is arranged on the other side of the top end of the base; the positioning disc is driven by the motor to intermittently rotate by 90 degrees each time, so that the cylindrical magnets in the positioning disc are fed, magnetized and discharged when rotating stops, and the purposes of continuously magnetizing and improving the magnetizing efficiency are achieved.

The utility model relates to an energy hedging type rapid demagnetization detection device for a power transformer. The energy hedging type rapid demagnetization detection device comprises a case shell, an operation display interaction unit and an internal control system, wherein the operation display interaction unit comprises a working mode selection switch, a degaussing direction selection switch, a power switch, a start button, a scram button, a high-voltage danger indicator lamp, an alarm buzzer, a power input interface, a high-voltage output interface, a USB and network interface, a touch liquid crystal screen and a structural component, namely a mounting panel; the internal control system comprises an energy storage unit, a switching power supply, an energy interaction direction control panel, a main control unit, an intelligent high-voltage regulating unit and structural parts, wherein the structural parts comprise a bottom mounting bracket, a device mounting bracket and a buckling cover part. The intelligent high voltage regulating unit is composed of an electronic voltage regulator and a boosting transformer. The device can quickly and thoroughly eliminate residual magnetism in a large transformer iron core, is compact and reasonable in structural layout, is provided with a pull rod and trundles, and is convenient and labor-saving to use on site.

The invention discloses an austenitic stainless steel plate for a sodium-cooled fast reactor accident fault-tolerant fuel rod and a manufacturing method, and the austenitic stainless steel plate comprises the following components in percentage by weight: 0.07%-0.08% of C, 0.50%-0.60% of Si, 10.0%-11.0% of Mn, less than or equal to 0.015% of P, less than or equal to 0.002% of S, 21.5%-22.5% of Cr, 15.5%-16.5% of Ni, 5.0%-6.0% of Mo, 0.35%-0.45% of N, 0.15%-0.25% of V, 0.10%-0.15% of Nb, 0.0015%-0.0025% of B and the balance of Fe and inevitable impurities. The production method of the steel plate comprises the steps of smelting, heating, rolling, heat treatment and demagnetization treatment.