4293results about "Inductances/transformers/magnets manufacture" patented technology

The invention discloses a neodymium-iron-boron magnet with double main phases and light rare earth diffusion based on asymmetric cerium distribution and a preparation method, and relates to the technical field of neodymium-iron-boron magnets. The method comprises the steps that a diffusion matrix is prepared through a double-main-phase technology, in the double-main-phase technology, the components of a main-phase alloy and an auxiliary-phase alloy are RaCebFe100-a-b-c-dMcBd, R is PrNd alloy or Nd metal, M is at least one of Cu, Al, Zr, Co and Ga, the content of Ce in the main-phase alloy is larger than that of Ce in the auxiliary-phase alloy, then the upper surface and the lower surface of the diffusion matrix are coated with a diffusion source solution, and the diffusion matrix is obtained through heat treatment. Carrying out heat treatment and aging treatment to obtain a neodymium-iron-boron magnet; the diffusion source solution is formed by mixing a diffusion source and a solvent, and the diffusion source is (PrmNdn) aAlbCucZrdCoeMgf. The neodymium-iron-boron magnet obtained through the method has high residual magnetism and high coercive force at the same time, the diffusion efficiency of the diffusion source is high, and the rare earth utilization rate is increased.

The invention discloses an yttrium-rich neodymium-iron-boron magnet and a preparation method thereof, and belongs to the technical field of rare earth permanent magnet material preparation. The preparation method comprises the following steps: mixing yttrium-rich neodymium-iron-boron matrix alloy powder with grain boundary doped alloy powder containing Gd and / or Ho, and carrying out compression molding and sintering tempering treatment to obtain a first yttrium-rich neodymium-iron-boron magnet. According to the invention, the grain boundary doped alloy powder containing Gd and / or Ho is added into the yttrium-rich neodymium iron boron matrix alloy powder and then is sintered, so that a continuous and uniform non-magnetic thin-wall grain boundary phase structure is formed in the grain boundary, and the coercive force of the magnet is enhanced. Dy and / or Tb heavy rare earth element grain boundary diffusion is carried out based on the first yttrium-rich neodymium-iron-boron magnet after grain boundary modification, a second yttrium-rich neodymium-iron-boron magnet is obtained, the diffusion depth of Dy and / or Tb in the magnet can be increased, the utilization rate can be increased, the cost can be reduced, the coercivity of the magnet can be improved, and the adverse effect of Dy and / or Tb on residual magnetism can be reduced.

The invention discloses a large transformer auxiliary assembling platform, which comprises mounting racks, a lifting platform, a lifting mechanism and a sleeving mechanism, two groups of mounting racks are mounted on the ground, the two groups of mounting racks are oppositely arranged, a positioning and clamping assembly for an iron core is arranged between the two groups of mounting racks, and the positioning and clamping assembly can be lifted and lowered; a lifting platform capable of ascending and descending is arranged on each group of mounting frames, a lifting mechanism is arranged between the two groups of mounting frames, two ends of the lifting mechanism are mounted on the two groups of mounting frames, the lifting mechanism ascends and descends on the mounting frames, sleeving mechanisms are arranged on the two groups of mounting frames, and a winding sleeves a phase column through the sleeving mechanisms; when the winding is nested, the lamination at the top of the transformer iron core and the upper clamping piece are lifted, so that a joist barrow is not needed for lifting and dismounting, meanwhile, the upper clamping piece and the lamination are lifted, and after the winding is nested, the lamination and the upper clamping piece are convenient to mount.

The invention relates to a Fe-Si-Nb-B-Cu-Er amorphous alloy and a preparation method and application thereof, and belongs to the technical field of metal materials. The atomic percent expression of the Fe-Si-Nb-B-Cu-Er amorphous alloy disclosed by the invention is (Fe < 83 > Si < 3 > Nb < 4 > B < 9 > Cu < 1 >) < 100-x > Er < x >, wherein x is equal to 3.5 to 4.5. The rare earth element Er is added to optimize the soft magnetic performance of a Fe-Si-Nb-B-Cu amorphous alloy system, the coercive force of the Fe-Si-Nb-B-Cu amorphous alloy system is reduced, the preparation method is simple and easy to implement, and the Fe-based amorphous alloy with the excellent soft magnetization performance is obtained. The magnetization intensity of the amorphous alloy is sharply increased along with increase of a magnetic field under a low magnetic field and then gradually reaches saturation, typical soft magnetic performance is presented, and the amorphous alloy has wide application space in the field of magnetic materials.

The invention discloses an automobile audio inductor assembling machine which comprises a first machining conveying line used for conveying a dispensing jig, and a first material planting mechanical arm, a dispensing machine and a CCD visual camera are sequentially arranged above the first machining conveying line from the starting end to the terminal end; the second machining conveying line is located on one side of the first machining conveying line, and a second material planting mechanical arm used for planting a second assembly is arranged above the second machining conveying line; the jig transferring manipulator is used for transferring the dispensing jig from the terminal end of the first processing conveying line to the starting end of the second processing conveying line; and the press-fit rail is in butt joint with the tail end of the second machining conveying line, a baking jig is received on the press-fit rail, a press-fit channel is formed in the middle of the baking jig, and a separation assembly is arranged at the initial end of the press-fit rail and used for opening or closing the press-fit channel. According to the invention, the assembling efficiency, the dispensing efficiency and the baking jig filling efficiency of the two components of the automobile audio inductor are improved.

The invention discloses a manufacturing method of an encapsulation type driver transformer with high heat dissipation efficiency, and belongs to the technical field of power electronic equipment manufacturing. The invention aims to solve the technical problems of low heat dissipation efficiency and insufficient long-term reliability caused by limited heat-conducting property of a potting material, simple surface heat dissipation structure and difficulty in coordination of internal thermal stress of the existing driver transformer. The method comprises the following steps: constructing a three-dimensional digital model of a reinforced heat dissipation structure with a boss array and a groove array, and preparing a corresponding forming mold; a magnetic core and a winding are used as inserts to be positioned in a mold cavity, insulating colloids with different mechanical and heat conduction characteristics are poured in a vacuum environment in batches, internal gaps are fully filled with flexible colloids and stress is buffered through a segmented curing process, meanwhile, high-heat-conduction rigid colloids form an external main body and a heat dissipation structure, and an integrated potting body is formed. The method is used for manufacturing the driver transformer suitable for scenes with high power density and high heat dissipation requirements, and the heat dissipation capability and the operation reliability of the driver transformer can be remarkably improved.

The invention discloses an integrated tile-shaped magnet outer circle grinding device and method based on artificial intelligence, and belongs to the technical field of grinding machining. The integrated tile-shaped magnet outer circle grinding device comprises a feeding device, a grinding device and a visual detection device; the feeding device comprises a feeding conveying belt, a guide groove, a spring bin, a material blocking barrel, a feeding barrel, a magnetic suction cup, an electromagnetic push rod, a cooperative mechanical arm, a reset spring and a discharging conveying belt. The visual detection device comprises a magnetic shoe counting camera, an annular light source, a counting camera bracket, a measuring camera bracket, a backlight plate, an outer contour measuring camera, a positioning camera and a positioning camera bracket; integrated automatic operation of feeding, grinding, detection and discharging is achieved, the production efficiency is greatly improved, automatic counting, precision detection and discharging are completed through cooperation of visual detection and the conveying belt, the manual operation intensity is effectively reduced, production interruption caused by personal errors is avoided, and the productivity in unit time is remarkably improved.

The invention relates to an ultrathin magnetic integrated transformer implementation method and device for LLC topology, and relates to the technical field of transformers, and the method comprises the steps: collecting a transformation application demand; generating a coil specification and a resonant inductance value according to a transformation application requirement; the primary coil, the secondary coil, the winding framework, the insulating insert and the magnetic core piece are selected according to the coil specification; generating an air gap depth value in combination with the resonant inductance value and the coil specification; generating gasket installation information according to the air gap depth value; winding the selected primary coil and secondary coil on a winding framework side by side, and mounting an insulating insert for separation; and adjusting a second magnetic column on the magnetic core piece according to the gasket installation information, and installing the preset magnetic core piece. The transformer has the advantage that the transformer can be conveniently used in ultra-thin application occasions.

The application relates to the technical field of integrally-formed inductors, in particular to a moisture-resistant soft magnetic composite material and a preparation method thereof and an integrally-formed inductor. The moisture-resistant soft magnetic composite material comprises the following components by mass: 100 parts of soft magnetic powder, 2-5 parts of a resin bonding agent and silicon resin, wherein the mass ratio of the silicon resin to the resin bonding agent is (0.3-2.0):100. The moisture-resistant soft magnetic composite material can avoid the phenomenon of explosion of the integrally-formed inductor during a reflow soldering process after moisture absorption.

The invention discloses a method for improving performance of rare earth permanent magnet sintered neodymium iron boron grain boundary diffusion, and belongs to the technical field of rare earth permanent magnet materials. The method comprises the steps that a low-melting-point metal layer and a diffusion layer containing heavy rare earth elements are sequentially formed on the surface of a clean sintered neodymium-iron-boron magnet, and then vacuum diffusion heat treatment and tempering treatment are conducted. Wherein the low-melting-point metal layer comprises at least one of copper, aluminum, gallium and tin or an alloy of the copper, the aluminum, the gallium and the tin; the heavy rare earth element comprises at least one of dysprosium, terbium, holmium and gadolinium. The low-melting-point metal layer is preferentially diffused and wets the grain boundary in the heat treatment process, heavy rare earth elements are promoted to be deeply and uniformly diffused towards the interior of the magnet along the grain boundary, so that a heavy rare earth-rich shell layer is formed outside main phase grains of the magnet, and the intrinsic coercive force is improved; meanwhile, the low-melting-point metal forms a strengthening phase at the grain boundary, the brittleness of the magnet after diffusion is improved, the surface corrosion phenomenon is restrained, and collaborative optimization of the comprehensive performance of the magnet is achieved.

The invention discloses a samarium cobalt permanent magnet material and a preparation method thereof. The preparation method comprises the following steps: mixing samarium cobalt magnet powder with non-magnetic metal powder and / or non-magnetic metal oxide and / or non-magnetic metal compound powder according to a mass ratio to obtain powder A; the samarium-cobalt magnet powder and the powder A are mixed or laid, and powder B is obtained; the powder B is subjected to orientation forming, isostatic cool pressing, sintering, solid solution and aging heat treatment, and the samarium-cobalt permanent magnet material is prepared. By doping the non-magnetic metal powder and / or the non-magnetic metal oxide and / or the non-magnetic metal compound powder step by step, fine regulation and control of the microstructure of the samarium-cobalt magnetic material can be achieved, and the samarium-cobalt magnetic material with high magnetic performance and high mechanical performance has industrialization value; and meanwhile, the purpose of improving the mechanical property of the samarium-cobalt magnetic material at relatively low cost is achieved. The samarium-cobalt permanent magnet material provided by the invention comprises a heterostructure in which a fine grain region and a coarse grain region coexist, so that the samarium-cobalt permanent magnet material has excellent mechanical properties and magnetic properties at the same time.

The invention relates to the technical field of emery scattering, in particular to a semi-automatic emery scattering machine and method.The semi-automatic emery scattering machine comprises a cache box, the bottom surface of the cache box is fixedly connected with a mounting disc, and the inner side surface of the cache box is provided with a discharging groove for triggering discharging when moving to the surface of a magnetic core; material scattering rods which evenly scatter materials through rotation and increase the range are arranged on the surface of the bottom of the discharging groove, a pushing overturning arm which is triggered to wrap a magnetic core so as to limit the material scattering range is arranged on the surface of the inner side of the installation disc, and a downward pressing pushing arm which converts ascending into downward and inward driving is arranged on the surface of the outer side of the pushing overturning arm. The bottom surface of the mounting disc is provided with a bottom shell which forms a frame and gathers inwards to control the material scattering range and prevent splashing, automatic triggering and area self-adaptive wrapping of the device above the magnetic cores are achieved, the device can be matched with the magnetic cores of different sizes without manual adjustment, it is ensured that the material scattering range is always aligned with the outlines of the magnetic cores, and the material scattering efficiency is improved. The emery is prevented from being splashed down to a non-working area.

The invention provides a hot-pressing preparation method and application of a magnetic powder core. The hot-pressing preparation method comprises the following steps: carrying out insulation coating on glassy state soft magnetic amorphous alloy powder to obtain an intermediate powder material with a coating structure; the coating structure comprises a first coating layer or comprises a first coating layer and a second coating layer which are arranged in sequence; the first coating layer comprises nano inorganic particles and phosphate, and the second coating layer comprises an organic coating material; carrying out hot pressing treatment on the material containing the intermediate powder material to obtain a magnetic powder core; the adopted glassy soft magnetic amorphous alloy powder has a supercooled liquid phase region, the lowest temperature and the highest temperature of the supercooled liquid phase region are Tg and Tx respectively, the temperature of the hot pressing treatment is (Tg-20 DEG C)-(Tx-20 DEG C), the pressure of the hot pressing treatment is 100-500 MPa, and the holding time is 2 s-120 min. According to the magnetic powder core provided by the invention, the coating layer can be kept complete in the hot pressing process, and the magnetic powder core has relatively high density, high resistivity, high magnetic conductivity and low loss.

The utility model relates to a magnet pushing and arranging jig which comprises a base, a guide plate and a cover plate. A plurality of parallel magnet sliding grooves are formed in the guide plate; the magnet sliding grooves comprise upper sliding grooves and lower sliding grooves; a first magnet positioning block corresponding to the upper end of the upper sliding groove is arranged on the base, and the lower end of the first magnet positioning block is matched with the first magnet in shape. A positioning clamping groove matched with the second magnetic block in shape is formed in the connecting position of the upper sliding groove and the lower sliding groove. A shifting block inserted into the lower sliding groove is arranged on the cover plate and used for driving the third magnetic block in the lower sliding groove to move upwards along the lower sliding groove. The magnet sliding grooves in the guide plate are arranged to be the upper sliding groove and the lower sliding groove, the first magnet positioning block is arranged on the base, and the positioning clamping groove is formed in the connecting position of the upper sliding groove and the lower sliding groove, so that all the magnets can be conveniently positioned, pushing and bonding operation can be rapidly completed by moving the guide plate and the cover plate, and the working efficiency is improved. And the magnetic block is accurate in positioning in the pushing and bonding process, convenient to push and simple to operate.

The invention discloses an inductor paint removing and tin plating machine and a tin plating method thereof, and relates to the technical field of spectrum detection, the inductor paint removing and tin plating machine comprises a machine body as well as a feeding mechanism, a paint removing module, a tin plating module, a transferring mechanism and a material receiving mechanism which are arranged in the machine body, the feeding mechanism is used for supplying an inductance coil, the paint removing module is used for carrying out paint removing treatment on a pin of the inductance coil, and the tin plating module is used for carrying out tin plating treatment on the pin. The tin plating module is used for carrying out tin plating treatment on the inductance coil subjected to paint removal, the transferring mechanism is used for transferring the inductance coil subjected to pin paint removal at the paint removal module to the tin plating module and transferring the inductance coil treated by the tin plating module to the material receiving mechanism, and the material receiving mechanism is used for receiving the inductance coil subjected to tin plating treatment. And discharging is completed. By the adoption of the technical scheme, a wave soldering machine is not needed, the occupied area and the purchase cost of equipment are greatly reduced, meanwhile, the energy consumption and the maintenance cost of the equipment are remarkably reduced, and the good market popularization value is achieved.

The invention relates to the technical field of electronic equipment part production, and discloses a magnet adhesive tape attaching automation device which comprises a machine box and further comprises a station disc, the station disc is rotationally connected to the top of the machine box, multiple sets of machining discs are fixed to the top of the station disc at equal intervals, and a servo motor for driving the station disc to rotate intermittently is arranged in the machine box; the glue supply part is arranged at the top of the case and used for conveying the adhesive tape into the processing disc; through combined operation of the glue supply part, the two feeding parts, the pressure maintaining part and the discharging part, automatic production of equipment is achieved, manual intervention is not needed in the whole process, and the machining efficiency is effectively improved; in the machining process, a pressure maintaining air cylinder and an extrusion bin are arranged, a further extrusion effect is provided for the magnet and the pasting frame, the bonding quality of the magnet and the pasting frame is improved, meanwhile, a Hall sensor is used for detecting magnetic pole discharging and magnetism of the magnet, and therefore the final product quality is ensured.

The invention provides a Y-rich rare earth permanent magnet and a preparation method and a magnetic performance improving method thereof, and the performance improving method comprises the steps: uniformly mixing to-be-diffused metal powder containing Dy and / or Tb elements with an organic solvent to obtain to-be-diffused alloy liquid; the alloy liquid to be diffused is attached to the surface of the Y-rich rare earth permanent magnet, and the Y-rich rare earth permanent magnet is placed in a vacuum sintering furnace; the Y-rich rare earth permanent magnet is subjected to grain boundary diffusion heat treatment through the vacuum sintering furnace, so that Dy and / or Tb elements are diffused into the surface layer of a main phase lattice of the Y-rich rare earth permanent magnet; and carrying out tempering treatment on the Y-rich rare earth permanent magnet. The problems that the coercive force of an existing Y-containing magnet is difficult to effectively improve, and residual magnetism is easily reduced can be effectively solved.

The invention belongs to the field of magnetic materials. The invention provides a preparation method of a rare earth permanent magnet, which comprises the following steps: weighing rare earth magnetic powder, adding a binder solution, uniformly mixing, and drying until a solvent is completely volatilized to obtain bonded magnetic powder; the bonded magnetic powder is placed in a die cavity of a constant-temperature die for heat preservation and preheating; an inner cavity of the constant-temperature mold is vacuumized to form a vacuum environment, and gas adhering to gaps of the magnetic powder is exhausted; applying a magnetic field to the mold, forming an oriented magnetic field in the mold cavity, arranging easy magnetization axes of the magnetic powder along the direction of the oriented magnetic field, and applying pressing force to obtain a mold pressing blank; and heating and curing the molded green body to obtain the rare earth permanent magnet. The rare earth permanent magnet prepared through the preparation method has high compactness, the residual magnetism and the maximum magnetic energy product capacity of the permanent magnet are improved, rare earth magnetic powder is prevented from being oxidized, and the coercive force of the permanent magnet is remarkably improved.

The invention discloses a production method of a sintered neodymium-iron-boron spliced magnet. The method comprises the following steps: processing a magnet to a predetermined size, cleaning and drying; dissolving solid epoxy resin, a solid latent curing agent and an accelerant by using an organic solvent to prepare an impregnating adhesive; gluing the two sides of the glass fiber cloth, and fully volatilizing a solvent to obtain pre-impregnated glass fiber cloth; after being cut, the magnetic blocks are inserted between the to-be-spliced magnets; and after being clamped by a clamp, the insulating adhesive layer is heated and cured to form a compact and pore-free insulating adhesive layer. According to the invention, air holes of the adhesive layer are thoroughly eliminated through a prepreg process, the formed insulating adhesive layer has excellent dielectric strength and insulativity, adjacent magnets can be effectively isolated, an eddy current channel can be effectively cut off, the eddy current heating problem in high-frequency application is remarkably reduced, and meanwhile, high strength and high reliability of the spliced magnet are ensured. The method is particularly suitable for the fields of motors and the like needing to reduce eddy-current loss.

The invention discloses an acid, alkali and salt corrosion resistant high-coercivity grain boundary diffusion neodymium-iron-boron magnet and a preparation method thereof, and the preparation method comprises the following steps: (1) selecting a sintered neodymium-iron-boron magnet as a base material, slicing the magnet, polishing the surface, and ultrasonically cleaning a coating surface; (2) preparing slurry by using absolute ethyl alcohol and PVB (Polyvinyl Butyral) glue by taking the heavy rare earth alloy as a diffusion source; uniformly coating a magnet with the slurry, and drying to obtain a magnet to be subjected to diffusion heat treatment; (3) performing diffusion heat treatment on the magnet to be subjected to diffusion heat treatment under a vacuum condition to obtain a grain boundary diffusion magnet; and (4) plating a layer of compact high-potential metal on the surface layer of the magnet by magnetron sputtering to prepare the high-coercivity grain boundary diffusion neodymium-iron-boron magnet with acid, alkali and salt corrosion resistance. According to the method, the coercive force of the magnet is remarkably improved, the influence on the residual magnetism of the magnet is small, and meanwhile, the negative influence on the corrosion resistance of the magnet after grain boundary diffusion is avoided; the prepared magnet has good acid, alkali and salt corrosion resistance.

The invention relates to the technical field of transformer machining, in particular to an oil-immersed transformer iron core machining stamping device which comprises a main body unit, a support, a stacking column fixedly connected with the inner wall of the support, a stamping mechanism arranged on the support and a driving unit. Comprising a push-pull mechanism arranged on the stamping mechanism and used for driving the stamping mechanism to move up and down, and the discharging unit comprises a discharging mechanism arranged on the support. The stamping mechanism and the discharging mechanism are synchronously driven by the driving mechanism, so that after the upper die base completes stamping, the discharging mechanism can be precisely connected for iron core taking, iron core transferring and stacking are achieved through the discharging unit composed of a pure mechanical structure, equipment such as a high-cost mechanical arm does not need to be introduced, the use cost is lower, and when the iron cores are transferred and discharged, the production efficiency is improved. And other equipment parts such as a limiting buffer rod bypassing the stamping mechanism avoid collision and interference between structural equipment, and the flexibility and the space adaptability of the device can be effectively improved.

The invention discloses a preparation method of a nanocrystalline soft magnetic ribbon with high magnetic performance, and belongs to the field of preparation of soft magnetic materials. With the development of artificial intelligence, the workload of offline intelligent calculation and cloud intelligent calculation is greatly increased, and with the dramatic increase of global greenhouse effect pressure of human beings, the energy consumption of related electric appliances does not meet the green development requirement, so that a nanocrystalline soft magnetic material with high saturation flux density and low coercive force is urgently needed; although it is found in related laboratories of high-magnetic-performance soft-magnetic nanocrystalline ribbons that the high-magnetic-performance soft-magnetic nanocrystalline ribbons exist for more than thirty years at present, the high-magnetic-performance soft-magnetic nanocrystalline ribbons cannot be industrially produced until now. According to the preparation method of the nanocrystalline soft magnetic ribbon with the high magnetic performance, complete industrial pure raw materials are used, the prepared ribbon is completely amorphous, the preparation process is smooth, the ribbon is rapidly quenched, corners of the ribbon do not fall off in the magnetic element preparation process after vacuum crystallization heat treatment, and the ribbon has high saturation flux density and low coercive force.

The invention discloses a high-magnetic-performance neodymium-iron-boron magnet and a preparation method thereof, and belongs to the technical field of magnetic materials. The technical problem that an existing magnet is low in magnetic performance is solved. The invention provides a preparation method of a high-magnetic-performance neodymium-iron-boron magnet. The preparation method comprises the following steps: S1, preparing neodymium-iron-boron powder A and neodymium-iron-boron powder B by adopting a vacuum melting method; s2, carrying out powder mixing and orientation compression treatment; s21, powder mixing treatment, wherein the neodymium-iron-boron powder A and the neodymium-iron-boron powder B are mixed, and evenly-mixed neodymium-iron-boron powder is obtained; s22, orientation treatment, wherein the evenly-mixed neodymium iron boron powder is placed in a magnetic field with the magnetic field intensity larger than 2.0 T to be subjected to orientation forming, and a neodymium iron boron blank is obtained; and S3, carrying out sintering treatment and two-stage aging treatment on the prepared neodymium-iron-boron blank to finally obtain the neodymium-iron-boron magnet with high magnetic performance. The residual magnetism of the neodymium-iron-boron magnet prepared by the method disclosed by the invention is 14.21 kGs or above.

The application provides a transformer coil foil winding machine, and relates to the technical field of transformer production. The foil winding machine comprises a rolling frame body, a guiding support frame body, a foil release frame body and a winding mechanism. The foil release frame body is provided with double release wheels for winding foil pieces and insulating spacers. The winding mechanism comprises a rolling shaft and an alignment structure. The rolling shaft is connected to a rolling motor and is provided with a slidable rolling core. The two ends of the core are provided with sliding supports. The alignment structure controls the movement of two centering clamping units towards each other through a synchronous driving unit, and the sliding supports are clamped in a rolling contact mode, so that the core is automatically centered and dynamically stabilized. During rolling, the centering clamping unit limits the vibration of the core, and ensures the accurate lamination of the foil and the insulating spacers. After completion, the clamping unit is reset to a horizontal state, which facilitates the quick replacement of the core. The application solves the problems of misalignment, wrinkles and low efficiency of the traditional winding machine, and significantly improves the electrical conductivity, heat dissipation and production efficiency of the transformer coil.

The invention provides forming equipment for magnetic material processing, and belongs to the technical field of magnetic material processing. Comprising a magnetic press body, a moving plate is installed on the right side wall in the magnetic press body through an air cylinder moving mechanism, a feeding opening is formed in the center of the top end of the moving plate, guide grooves are longitudinally and symmetrically formed in the lower section of the inner wall of the feeding opening, and sliding grooves transversely penetrate through the side walls of the two guide grooves; a knocking assembly is arranged between the sliding groove and the feeding control assembly. The width of the discharging channel and the inclination angle of the material guide plate are adjusted through the feeding control assembly, so that the discharging channel can be rapidly matched with different molds; the vibration position is automatically adjusted through the knocking assembly according to the size of the channel, a self-adaptive flow promoting mechanism is formed, and the feeding efficiency and reliability are jointly improved.

An electronic component includes a body, an inner conductor inside the body, and an outer electrode that lies on part of at least a first main surface of the body and includes an underlying electrode and a plating electrode with which the underlying electrode is covered. The underlying electrode includes a first underlying electrode on part of the first main surface and connected directly to the inner conductor and a second underlying electrode at part of the first main surface away from the first underlying electrode and closer than the first underlying electrode to the center of the body in the length direction and not connected directly to the inner conductor. The plating electrode includes first and second plating electrodes. The first underlying electrode is covered with the first plating electrode, and the second underlying electrode is covered with the second plating electrode.

The application relates to a high-cobalt rare earth permanent magnet material and a preparation method thereof, and belongs to the technical field of rare earth permanent magnet materials. The high-cobalt rare earth permanent magnet material comprises the following components in percentage by mass: RE a Co b M c TM e Fe 100‑a‑b‑c‑d B d , 28<=a<=35, 15<=b<=30, 0.5<=c<=1.2, 0.95<=d<=1.2, 0.2<=e<=3; RE is one or a combination of Pr, Nd, La, Ce, Y, Gd, Tb, Dy and Ho; M is one or a combination of Cu and Al; TM is one or a combination of Cr, Nb, Zr, Ga, Ti, Zn, V, Mo and Mn; the microstructure comprises a main phase and a grain boundary phase, the Co-rich phase in the grain boundary phase accounts for less than or equal to 5% of the total volume fraction of the grain boundary phase; and the Co:M mass percentage in the Co-rich phase is 5:1-100:1. The microstructure of the magnet can be optimized, and the coercivity of the magnet is improved.

The invention relates to a low-loss FeSi-CIP composite soft magnetic powder core and a preparation method thereof. The adopted raw material powder is composed of amorphous nanocrystalline atomized FeSi series powder and filling powder composed of carbonyl iron powder and iron-silicon-aluminum powder. The carbonyl iron powder accounts for 15-25% of the mass of the raw material powder, the iron-silicon-aluminum powder accounts for 5-15% of the mass of the raw material powder, and the filling powder accounts for 25-35% of the mass of the raw material powder. Two-stage warm-pressing pressing is adopted, self-tempering is achieved to a certain extent at the specific warm-pressing temperature, and high direct-current bias performance and low iron loss can be obtained without heat treatment annealing after pressing forming. The effective magnetic conductivity of the powder core is 42 or above, the loss is as low as 350 mW / cm < 3 > (50 mT, 100 kHz), and the direct current bias performance under the external field of 100 Oe reaches 90% or above.