453results about How to "Increase magnetic induction" patented technology

The invention provides magnetic rubber with high magnetic induction intensity and the preparation method thereof, which belongs to the composite material technology field. The invention solves the problems in the prior production process that the production cost is high, the magnetic induction intensity of the produced special magnetic rubber product is low, and the elasticity performance is poor. The magnetic rubber with high magnetic induction intensity is made of ferromagnetic oxide powder, natural rubber, plasticizer, accelerator, activator, antioxidant and stearic acid which are prepared. The preparation method comprises the following steps: step A, grinding and blending; step B, rubber refining; step C, moulding, and step D, charging magnetism. The magnetic induction intensity of the magnetic rubber special product reaches above 600 gauss, and the elasticity performance is good; the preparation method and process is simple, and the production cost is low.

The invention relates to a non-oriented high-silicon electrical steel ribbon and its making method, and belongs to the fields of the metallurgical technology and the material science. The chemical components of the ribbon comprise 4.5-7.0wt% of Si, 2.0-5.0wt% of Cr, 0.06-1.0wt% of Al, 0.3-0.8wt% of Mn, 0.005wt% or less of N, 0.004wt% or less of S, 0.02wt% or less of P, 0.003wt% or less of O, 0.005wt% or less of C, and the balance Fe, and the thickness of the ribbon is 0.35-0.5mm. The making method comprises the following steps: smelting non-oriented high-silicon steel in a vacuum smelting furnace; carrying out double-roller ribbon roll-casting at a casting temperature of 1420-1460DEG C to the ribbon thickness of 1.0-1.5mm; carrying out hot rolling of the ribbon at 800-1100DEG C to the hot rolled ribbon thickness of 0.8-1.0mm; pickling, and preheating the ribbon, and carrying out warm rolling at 400-700DEG C; and annealing. The addition of the Cr element in the high-silicon electrical steel ribbon obviously improves the processing performance of the high-silicon steel ribbon, the iron loss value is same to the iron losses of present high-silicon steel products, and the magnetic induction intensity is above 0.03T higher than that of the present products. The making method has the advantages of simple technology, low energy consumption, high yield, and excellent product magnetic property.

This invention relates to magnetic material field and especially to a process method improvement and its formula to hexagonal magnetic lead ferrite powder and sinter magnetism, wherein the said magnetism or magnetic powder has one-Curie temperature with A,R, B and Fe hexagonal ferrite main phase and the following molecular formula: A1-XRx[(Fe3+aFe2+b)12-yBy]zO19, through adding positive three Co and optimizing the formula and improving the magnetism crystal aeolotropism constant K1.

The invention discloses a cable tunnel inspection robot equipped with wireless charging equipment and a charging method for the robot. The wireless charging equipment comprises a transmitting unit, a receiving unit and a ZigBee communication module, wherein the receiving unit is mounted on the cable tunnel inspection robot; the transmitting coils in the transmitting unit are four equal-size circular coils which are arranged on the same plane and are connected in series mutually; a square is formed by the centers of the circular coils in a surrounding manner, and the circular coils are partially overlapped mutually; a charging battery in the receiving unit is used for supplying electric energy for the cable tunnel inspection robot; and a first controller in the transmitting unit and a second controller in the receiving unit are in wireless connection through the ZigBee communication module. According to the charging method disclosed by the invention, an RFID electronic tag is adopted to realize accurate positioning of the cable tunnel inspection robot, so that quick wireless charging of a dual-cable-rope guiding rail type cable tunnel inspection robot is realized.

The invention discloses high-magnetic strength oriented silicon steel, comprising the following components by weight percent: 0.055-0.095% of C, 2.95-3.25% of Si, 0.050-0.090% of Mn, no more than 0.01% of P, 0.010-0.025% of S, 0.006-0.010% of N, 0.05-0.5% of Cr, 0.020-0.030% of Als, 0.002-0.1% of Bi, 0.01-0.06% of Se and 0.01-0.06% of Sb. The production method comprises the following production steps: heating a casting blank; rolling, processing at normal temperature; conventionally rolling into the product by adopting a primary cold rolling method or a secondary rolling method containing intermediate annealing; decarbonizing and annealing; coating a parting compound of taking magnesium oxide as a main ingredient; annealing at high temperature by adopting secondary heat preservation, carrying out heat preservation at 800-1100 DEG C for 5-20 hours, and at 1170-1220 DEG C for 5-25 hours in a full-hydrogen atmosphere; stretching and flatly annealing; coating an insulating layer on the surface of a steel plate. The magnetic induction strength B800 of the oriented silicon steel is not lower than 1.95T by independently adding or compositely adding Sb, Se and Bi grain-boundary segregation elements, and the magnetic property is stable.

The invention discloses a strong magnetic iron remover with low temperature superconductivity, a cryostat is arranged on an outer cover of the invention, and the cryostat is hoisted on an inner wall of the outer cover through a pull-rod. The cryostat is provided with an indoor temperature Dewar, a 4.2K Dewar is arranged in the indoor temperature Dewar, a heat radiation screen is arranged between the indoor temperature Dewar and the 4.2K Dewar, gaps are arranged in perimeters between the indoor temperature Dewar and the heat radiation screen and between the heat radiation screen and the 4.2K Dewar, a superconducting coil can be coiled in insulation on an inner cylinder of the 4.2K Dewar, and power can be provided for the superconducting coil by a pair of two-dimensional electric currents lead-in wires. A vacuum state is between the indoor temperature Dewar and the 4.2K Dewar, and the 4.2K Dewar is filled with liquid helium20. The invention has great magnetic induction intensity, and can suck out tiny iron magnetic substances from materials, and has high working stability.

Flywheel generating multifunctional system comprising, a case subsystem, flywheel-bearing subsystem, energy conversion generating subsystem containing a multifunctional armature, power and propulsion subsystem. In the system, at least one of the following components is used, a flywheel including more than one pair of magnetic poles at the axial and radial positions respectively, a combination flywheel with enlarged magnetic pole excitation operating area, annular magnetic suspension bearing possessing constraining force of more than two two-dimensions, eccentric type ring shape magnetic suspension bearing, more than two multifunctional armatures using weak magnetic material as armature core, controllable movable armature winding with iron core made of soft magnetic material.

The invention provides a rare earth permanent magnetic material. The rare earth permanent magnetic material comprises a primary phase and a secondary phase, and the secondary phase is isolated from the primary phase or the secondary phase covers the periphery of the primary phase. The primary phase is composed of R1x1R2y1Fe(100-x1-y1-z1-w1)Coz1Bw1N1g1; R1 is selected from Pr or/and Nd, R2 is selected from at least one of Dy, Tb and Ho, 26wt%<=x1+y1<=36wt% and 0.01wt%<=y1<=10wt%; the secondary phase is composed of R3x2R4y2Fe(100-a-b-c-v-u)Coz2Bw2N2g2, R3 is selected from at least one of Pr, Nd, Dy and Tb, R4 is Ho, 35wt%<=x2+y2<=65wt% and 0.01wt%<=y2<=20wt%. The rare earth permanent magnetic material is prepared in a dual-alloy mode, is low in cost, strong in coercive force and high in magnetic induction, and a magnet of a smaller size can be used when the rare earth permanent magnetic material is applied to a motor,.

The invention discloses an electromagnetic sensor of an electromagnetic stirring device of a slab continuous-casting crystallizer and belongs to the electromagnetic stirring device of the slab continuous-casting device with an aim to solve the problem of flux leakage of an iron core. The electromagnetic sensor comprises the iron core, multiple sets of coils and a magnetic shield, the iron core is a columnar iron core composed by stringing and stacking multiple E-shaped iron core bodies together, and each E-shaped iron core is composed of highly-permeable E-shaped silicon steel sheets; the coils identical in the number of windings are respectively wound on the outer side of the columnar iron core, and each coil is conducted with alternating current with a certain phase position, frequency and current intensity; the magnetic shield is an opening shield and is arranged on the rear side of the iron core, and the opening side of the magnetic shield faces a crystallizer copper plate. By the aid of the electromagnetic sensor with the magnetic shield structure, trend of a magnetic line of force in space is changed, higher magnetic sensing intensity can be generated under the condition of the same input current, electromagnetic force can be enhanced, efficiency of the system is improved, and interference of the magnetic field of the stirring device upon peripheral equipment instruments is greatly reduced.

The invention relates to a blueing treatment process for a semi-processed electrical steel rotor or stator, which is mainly used for solving the technical problems of high energy consumption, great pollution, high cost and the like of the prior art. The key points of the technical scheme are as follows: semi-processed electric steel is adopted for preparing a rotor or stator punched sheet, then oil firing, decarbonization, distressing and annealing are performed on the rotor or stator punched sheet, and blueing treatment is finally performed to prepare a finished product. The blueing treatment process is mainly used in production processes of rotor or stator iron cores of motors.

This invention relates to a process of producing 350MPa cold rolled steel magnet. It includes steps as follows: (1)to heat plate body to 1160-1230DEG C;(2)hot

This invention relates to a process of producing 250MPa cold rolled steel magnet. It includes steps as follows: (1)to heat plate body to 1160-1230DEG C;(2)hot rolling steps: the start rolling temperature 1050-1100DEG C,end rolling temperature 840-880DEG C,cooling to 640-700DEG C for coiling. (3)cooling to 70DEG C below for acid picking. (4)cold rolling steps; (5) bell furnace anneal; controlling temperature 660-680DEG C (6) temper rolling, then the products. Account to weight the main chemical composition is: C 0.03-0.09%,Si 0.10-0.30%,Mn 0.30-0.70%,Nb 0.015-0.025 %,Als 0.01-0.07%,P <=0.025%,S <=0.010%, Fe the rest.

The invention relates to a device and method of rotating slotting magnetic pole polishing of the inner surface of a pipe fitting. The device comprises a horizontal driving mechanism, a vertical driving mechanism, a rotating motor, a rotating motor supporting plate, a slotting magnetic pole, a magnetic pole chuck, a main motor, a triangular chuck and a base. The horizontal driving mechanism is connected with the vertical driving mechanism and drives the vertical driving mechanism to move in the horizontal direction, and the vertical driving mechanism is connected with the rotating motor through the rotating motor supporting plate. The rotating motor drives the magnetic pole chuck to rotate, and the slotting magnetic pole is clamped on the magnetic pole chuck. The base is fixed to the horizontal driving mechanism, and the main motor drives the triangular chuck. One end of a workpiece is clamped on the triangular chuck, and the other end of the workpiece is limited by a tail base. The workpiece is arranged below the slotting magnetic pole. The device and method have the advantages that the inner surface of the pipe fitting can be processed, the rotating magnetic pole drives magnetic abrasive particles, the movement trail is more complex, the impact scratch caused by the magnetic abrasive particles on the pipe fitting which needs to be processed is more complex, and therefore the surface roughness of the pipe fitting which needs to be processed can be improved.

The invention relates to a Fe-based amorphous/nanocrystalline soft magnetic alloy thin belt. A chemical expression formed by elements of the alloy thin belt is FeaSibBaCudMee, wherein the atomic percent of the elements is shown as follows: a is equal to 80-85, b is equal to 2-13, c is equal to 5-13, d is equal to 0.5-2, e is equal to 0.5-5, a+b+c+d+e is equal to 100; Me is Zr, Nb or Mo. The alloy thin belt has a thickness of 15-40 [mu]m and a width of 1-5 mm. Through adding the Me element in the method, the nucleation rate of super-cooled liquid is effectively improved, and the precipitation of a BCC nanocrystalline iron phase is promoted, Fe-based nano alloy is prepared, and the magnetostriction coefficients of a material are reduced, so that the initial magnetic conductivity is improved, and the saturated magnetic induction intensity is obviously improved.

The invention discloses a transmission line lead anti-icing compound coil based on ferrite and a preparation method thereof, and relates to the fields of a magnetic heating material and safe operation of a power grid, in order to solve the problems of low heat productivity, high cost, large load and fixed form of the anti-icing material of a transmission conductor. The product is prepared from ferrite magnetic material powder and polymer base stock. The method comprises the following steps: weighing the ferrite magnetic material powder, the polymer base stock, a plasticizer, a lubricating agent and an antioxidant; and extruding and drying by an extruder after stirring, so as to obtain the compound coil of which the thickness is 2-10mm, wherein the loss at normal temperature is less than 5 W/kg, the saturation flux density when the temperature is lower than 0 DEG C can be up to 0.85T, and the single calorific value at -5 DEG C to 0 DEG C can be up to 32 W/kg under an alternating magnetic field of 50Hz. Thus, the anti-icing compound coil can be applied to the fields of the magnetic heating material and safe operation of the power grid.

The invention relates to a superconductive magnetism-isolation-type magnetism adjusting device, and belongs to the technical field of mechanical engineering transmission. The device is characterized by comprising a magnetism adjusting iron block, a superconductive substrate, a heat insulation layer, a supporting frame, a cold conveying pipe, a loop pipe and a refrigerator. The meissner effect of a superconductive material is utilized, when the temperature of the superconductive material is lower than a critical temperature and a superconductive state is formed, the superconductive material repels magnetic lines of force completely out of the superconductive material so that magnetic lines of force of an external magnetic field cannot penetrate through the superconductive material, the direction of the magnetic lines of force is changed and all the magnetic lines of force pass through the magnetism adjusting iron block. An adjustment magnetic field formed after the external magnetic field is adjusted through the magnetism adjusting iron block is different in rotation speed and distribution from an original magnetic field, and accordingly a magnetism transmission device has a speed adjustment function.

The application discloses a manufacturing method of thin-strip continuous casting high magnetic induction non-oriented silicon steel. The manufacturing method comprises the following steps: (1) smelting molten steel and performing thin-strip continuous casting to obtain a cast strip, wherein the degree of superheat for thin-strip continuous casting is 30-55 DEG C; (2) cooling the cast strip and directly performing hot rolling and coiling to obtain hot-rolled strip steel, wherein the hot-rolling reduction is 30%-50%; (3) performing cold rolling with the reduction of not more than 60% on the hot-rolled strip steel; and (4) performing annealing treatment to obtain a non-oriented silicon steel finished plate. The manufacturing method disclosed by the invention has the advantages of short process flow, low production cost and obvious energy-saving and emission-reducing effects. By eliminating an abnormally coarse columnar crystal structure through the appropriate hot-rolling reduction, a corrugated defect of a cold-rolled product is avoided; meanwhile, (100) plane texture in an as-cast microstructure is inherited; the cold-rolling reduction is reduced, so that the formation of cold-rolled (111) texture is avoided, the proportion of annealing plate (100) texture is increased, a high magnetic induction non-oriented silicon steel product is obtained, and the magnetic induction of the high magnetic induction non-oriented silicon steel is above 1.81T.

A speaker includes a frame, a diaphragm, a cover, a magnetic device, and a voice coil. The cover and the diaphragm are both disposed on a first side of the frame, and the cover covers the diaphragm. The magnet device is disposed on a second side of the frame. The voice coil is disposed on the magnetic loop generated by the magnetic device and integrated with the diaphragm. The magnetic device includes a yoke, a magnet, and a pole piece. The yoke includes a protrusion by bending for the magnet and the pole piece to be mounted upon.