136results about How to "Good magnetic conductivity" patented technology

The invention provides a preparing method for a flexible and windable wave-absorbing film material, which pertains to the technical field of basic materials for electrons, and is for depositing metallic ions and alloys that are wave absorbing and conductive on surfaces of flexible and windable organic insulators so as to form the wave-absorbing film. The procedures are: selecting a substrate, pre treating before sputtering, making NiCo alloy target, vacuum sputtering, plating copper on the substrate plated with NiCo alloy film, plating NiCo alloy or Ni or Co on above copper plating base, finally cutting and packing. The wave-absorbing material produced by the method is of a high film-forming speed, low cost and good wave-absorbing function. The film is thin, level and clean, of good magnetism conductivity, easy to construct and widely applicable, can be used as pasted films for secret rooms, ship decks, concealed military facility, precision instruments, flexible printed circuit boards and protecting articles, etc.

The invention discloses a cooking ware for an induction cooker. The cooking ware comprises a green body, wherein a magnetic and conductive film with a resin protection layer is adhered to the bottom surface of the green body; a ceramic glaze layer is also evenly coated at the overall outer surface of the green body; the green body comprises the following components by mass fraction: 36-56% of kaoline, 40-60% of quartz, 0.2-0.6% of bone meal, 0.1-0.3% of soapstone, 2-4% of potash feldspar and 0.3-0.5% of spodumene; the magnetic and conductive film comprises the following components: 35-45% of silver oxide paste, and 55-65% of quartz powder; the silver oxide paste contains 50-60% of silver oxide; the ceramic glaze layer contains the following components: 32-50% of kaoline, 28-42% of quartz, 6-10% of limestone, 3-5% of soapstone, 4-6% of potash feldspar, 1-2% of spodumene and 4-7% of zinc oxide. The production technology of the cooking ware comprises the following steps: preparing the green body; preparing ceramic glaze; preparing the magnetic and conductive film; attaching the magnetic and conductive film on the bottom surface of the green body; sintering, glazing and baking. The cooking ware is fast to generate heat, environment-friendly, good in safety, and simple in technological operation.

Soft magnetic particle powder is soft magnetic particle powder composed of flat soft magnetic particles, and the soft magnetic particle powder has a particle size D₁₀ and a particle size D₅₀ measured with a laser diffraction particle size distribution analyzer satisfying formula below: D₁₀/D₅₀>0.30.

The invention discloses a disc type motor rotor with a pole shoe composite magnetic pole structure, and relates to the field of motors. The disc type motor rotor comprises a rotor supporting disc, a hole is formed in the center of the rotor supporting disc, and a groove is formed in the surface of one side of the rotor supporting disc and used for installing a rotor core and composite magnetic poles; the rotor iron core is of an annular structure, is arranged at the bottom of the groove and is tightly attached to the rotor supporting disc, T-shaped baffles distributed in the radial direction are arranged on a surface of a side, away from the rotor supporting disc, of the rotor iron core, and the T-shaped baffles divide the rotor iron core into a plurality of fan-shaped spaces at equal intervals along the circumference; the composite magnetic poles are arranged in the fan-shaped spaces on the rotor iron core; the composite magnetic poles comprise permanent magnets and pole shoes, and the pole shoes made of composite soft magnetic materials are installed on the surface of the permanent magnet. The radians of the pole shoes on the surface of the permanent magnet can be adjusted, sinewave air gap flux density is generated, the output torque of a motor is smooth, the pole shoes can protect the permanent magnets against field loss under the action of a demagnetization field, the field weakening capacity of the motor is improved, and the motor is easy to machine and suitable for batch production.

A magnetic component includes a magnetic core, a winding, and a magnetic piece. The magnetic core includes at least one magnetic column, a top cover, and a bottom cover. The magnetic column is disposed between the top cover and the bottom cover, and an air gap is formed between the top cover and the magnetic column. The winding is wound on the magnetic column. The magnetic piece is disposed between the winding and the air gap, and the magnetic piece is arranged parallel to the air gap.

The invention relates to a sealed type direct current contactor with high breaking capacity. The sealed type direct current contactor with high breaking capacity is characterized in that a reaction spring and a bridge terminal assembly are respectively arranged at the lower end and upper end of a push rod; a moving iron core is arranged in an electromagnetic coil and is connected with the push rod; a contact assembly is fixedly arranged above the electromagnetic coil; a casing and an arc extinguishing cover form a sealing cavity; an action system, a contact system and a magnetic circuit system are respectively arranged in the sealing cavity; the arc extinguishing cover comprises a metal ceramic sheet, a permanent magnet and an upper cover; the upper cover is connected and sealed with the casing; the metal ceramic sheet and the permanent magnet are respectively and fixedly arranged at the two ends and two sides of the upper cover. The sealed type direct current contactor has the beneficial effect that the electric arc generated by the disconnecting of a main contact is effectively extended by the metal ceramic sheet in a strong magnetic field which is generated by the permanent magnet, a metal oxide in the metal ceramic sheet can be decomposed by the effect of the electric arc to absorb a large amount of heat, and a large amount of electric arc energy is consumed, so that the electric arc can be quickly extinguished.

In an embodiment, a coil component includes a magnetic body, and an internal conductor 21 having a center axis and formed in a spiral shape; wherein the internal conductor 21 is embedded in the magnetic body; in a cross sectional view of a plane that includes the center axis extending in the vertical direction, wherein a conductor region part 11 positioned between the adjacent windings of the spiral shape has a higher oxygen content than that of a core part 12 including the center axis and positioned on the inner side of the windings of the spiral shape. the magnetic body is constituted by iron-based soft magnetic grains and oxide film of at least one type of element that oxidizes more easily than iron, which oxide film bonds at least partly the iron-based soft magnetic grains.

The invention discloses a preparation method for highly-efficient nickel-graphite powder, which is characterized by comprising the following steps of: (1) preparing a reaction device: preparing a cylindrical closed container, wherein the cylindrical closed container is hollow inside and is used as reaction space for graphite powder nickel plating; (2) preparing raw materials; (3) getting ready for nickel plating; (4) operating the nickel plating; and (5) operating the nickel plating again. The invention also discloses a special device for realizing the method. The preparation method and the device disclosed in the invention integrate all the preparation working procedures, materials, devices and equipment together, and are suitable for industrial production; and in the production process, the invention has the advantages of easy control of working conditions, stable product quality, highly efficient production and no pollution.

The invention aims at providing a synchronous double-valve electromagnetic control oil atomizer. The synchronous double-valve electromagnetic control oil atomizer comprises a synchronous double-valve electromagnet assembly, a pilot ball valve base, a steel ball, a control piston body, an oil atomizer body, a needle valve ejector rod, a needle valve reset spring base, a needle valve reset spring, a nozzle, a nozzle fastening nut, a needle valve and an oil atomizer head fastening nut. The synchronous double-valve electromagnet assembly structure is adopted, two pilot ball valves can be rapidly and synchronously controlled, the requirement for ball valve control flow and response can be met, the effect of the rail pressure change on the movement of the ball valves can be reduced, and the rapid response characteristic of the diesel engine total-working-condition oil atomizer is guaranteed. In addition, the structure of an axial cooling type iron core and a radial coil is adopted in the synchronous double-valve electromagnet assembly, the heat dissipation area of the coil and the iron core is increased, the interior of the iron core and the coil are well cooled, and good electric conduction performance, safety and reliability of the coil and good magnetic conduction performance of iron core materials are guaranteed.

The invention discloses a mixing device for a scald film-spraying agentia. The mixing device comprises a mixing cylinder with a top end opening; a supporting rod is fixedly arranged at the middle partof the inner bottom surface of the mixing cylinder; a transmission case located at the lower middle part of the mixing cylinder is fixedly arranged at the top end of the supporting rod; driven shaftsare arranged on the left and right side walls of the transmission case in a penetrating manner; driven bevel gears are respectively and fixedly arranged at the end parts, positioned in the transmission case, of the driven shafts; mixing impellers are respectively and fixedly arranged at the end parts, positioned on the outer side of the transmission case, of the driven shafts; a vertical spindleis arranged at the top of the transmission case in a penetrating manner; an axle drive bevel pinion is fixedly arranged at the end part, positioned in the transmission case, of the spindle; the axle drive bevel pinion is engaged with two driven bevel gears; a spline groove is formed in the top end of the spindle; an end cover is detachably connected with the top end of the mixing cylinder; a motoris arranged at the middle part of the top end of the end cover; an output shaft of the motor penetrates through the end cover; the bottom end of the output shaft is provided with a spline tooth inserted into the spline groove. The device disclosed by the invention can improve the problem that an existing scald film-spraying agentia mixing device cannot uniformly mix the drugs by one-way mixing.

The invention belongs to the technical field of wireless charging, and discloses a high-thermal-conductivity composite magnetism isolating sheet for a wireless charging receiving end and a preparationmethod of the high-thermal-conductivity composite magnetism isolating sheet. The composite magnetism isolating sheet for the high-thermal-conductivity wireless charging receiving end is a composite material formed by alternately compounding nanocrystalline sheets and a composite material layer, and the composite material layer comprises a thermal conductive filler, a magnetic conductive filler and a binder. According to the preparation method, the surface of the magnetic conductive powder is uniformly coated with the heat conductive powder, so that the electrical conductivity of the magneticpowder can be effectively reduced. And meanwhile, even if the composite magnetic powder has a bridging phenomenon in the composite material layer, the heat conductive powder with excellent insulativity on the surface of the magnetic powder can play a certain role in isolation, so that the resistivity of the composite layer is greatly improved, and the improvement of the charging efficiency of thesystem is facilitated.

The invention discloses a degradable magnetic-permeable hot-melt adhesive as well as a degradable magnetic-permeable hot-melt adhesive membrane and a preparation method of the degradable magnetic-permeable hot-melt adhesive membrane. The degradable magnetic-permeable hot-melt adhesive comprises the following components in percentage by weight: 60-80% of raw adhesive, 10-20% of magnetic-permeable powder, 0.5-1.5% of flatting agent and 0.3-0.8% of a metal deactivator, wherein based on the total weight of the raw adhesive being 100%, the raw adhesive comprises the following components in percentage by weight: 20-40% of biodegradable polyester, 10-30% of tackifying resin and the balance of solvent capable of enabling the biodegradable polyester and the tackifying resin to form an adhesive liquid. The degradable magnetic-permeable hot-melt adhesive membrane is prepared from the degradable magnetic-permeable hot-melt adhesive. The degradable magnetic-permeable hot-melt adhesive and the degradable magnetic-permeable hot-melt adhesive membrane have the advantages of good magnetic permeability as well as good compatibility, high initial adhesive strength, biodegradability, environment friendliness and smooth surface.

The invention relates to a cuboid permanent magnet reciprocating mobile magnetic conduction shielding device, which is provided with a frame, and is characterized in that: a middle part of the frame is provided with a cuboid permanent magnet, and a shield component which reciprocates along the surface of the permanent magnet is arranged at the periphery of the permanent magnet and comprises a C-shaped shield plate and a mobile bracket; one side of an opening of the shield plate is correspondingly provided with a magnetic conduction side plate which is in magnetic conduction connection with the C-shaped shield plate and is fixed on the frame; and the shield component is provided with a linear reciprocating driving mechanism, and is assembled with the frame through a slide rail structure. The cuboid permanent magnet reciprocating mobile magnetic conduction shielding device allows the magnetic field intensity of a disk permanent magnet to continuously change by utilizing the continuous rotation of a rotating shield, and has high shielding efficiency on a magnetic field.

The invention relates to an arc control device in a load switch, which is particularly applicable to SF6 gas-filled switching equipment, belonging to the technical field of intermediate voltage electric equipment. The arc control device is characterized in that an arc control grid is improved to have a frame structure with an open front and an back, is benefit for the insert connection with a flat arc control grid sheet\; the arc control grid sheet is provided with grooves and holes in pattern which are asymmetric, so that an electric arc can be stretched and can be cut into a plurality of short electric arcs to effectively prevent arc restrike after current passes zero and improve the performance of arc control. The arc control grid sheet is made of a silicon-steel plate, electric pure iron and other magnetic conductive materials, and the excellent magnetic conductive performance ensures that the electric arc can be automatically introduced into the arc control device under the action of electromagnetic field force, thereby improving the effect of arc control. Because the arc control grid sheet has a sheet shaped structure without a special mould, the arc control grid sheet becomes simply through processing by laser cutting equipment or numerical punching equipment. The arc control device has the advantages of simple structure, good arc control performance and strong practicality, and can replace the prior arc control device in the prior load switch.

The invention relates to a preparation method of a high molecular adhesive having a good magnetic conduction function, and in particular relates to a method for preparing a ferro-silicon-boron amorphous magnetic conductive adhesive. The method comprises the following steps: I, smashing an amorphous belt material into powder, and mixing according to certain granularity and weight content; II, thermally treating the mixed powder under a nitrogen protection atmosphere, adding a solvent, stirring uniformly, and pouring into a high-pressure reaction kettle; III, adding an adhesive substrate material and a mineralizing agent into the high-pressure reaction kettle, replenishing the solvent, heating while stirring, and preserving heat; and IV, stopping heating, cooling to normal temperature, opening the reaction kettle, taking a mixed solution out, and performing vacuum drying to obtain the amorphous magnetic conductive adhesive. The prepared magnetic conductive adhesive has the characteristics of higher magnetic flux of the magnetic path of an iron core, lower loss and low heating value.

The invention provides a magnetic shielding structure applied to an ultrahigh voltage autotransformer clamp and relates to the magnetic shielding structure. The magnetic flux leakage density between an inner winding and an outer winding of the ultrahigh voltage autotransformer is high; and the loss cannot be effectively reduced and the hidden danger of local overheating cannot be effectively eliminated by use of a usual method. The magnetic shielding structure comprises a bent magnetic shielding part, a first insulating base plate and a fastener of connecting the bent magnetic shielding part and the first insulating base plate to the clamp; the cross section of the bent magnetic shielding part is L-shaped and the bent part is in circular arc transition; and the bent magnetic shielding part is arranged at the outer end part of the clamp. The L-shaped bent magnetic shielding part is added to the outer end part of the clamp with relatively high leakage flux density, so that leakage flux entering a non-magnetic clamp is reduced and the additional loss generated by the leakage flux can be effectively reduced.