37results about How to "Good antimagnetic" patented technology

The invention provides a magnetic-suspension wave detector. The magnetic-suspension wave detector comprises a shell, a fixed permanent magnet, a first diamagnetic body, a coil, a second diamagnetic body and a suspension permanent magnet, wherein the fixed permanent magnet, the first diamagnetic body, the coil and the second diamagnetic body are sequentially arranged at the inner part of the shell from top to bottom, the suspension permanent magnet is positioned in the coil, and the magnetic pole magnetisms of the fixed permanent magnet and the suspension permanent magnet facing each other are different. According to the magnetic-suspension wave detector provided by the invention, the gravity born by the suspension permanent magnet can be offset through an attraction force from the fixed permanent magnet to the suspension permanent magnet, and the suspension permanent magnet is guaranteed to be in a stable state through the diamagnetic bodies which are positioned at the upper part and the lower part of the suspension permanent magnet; and when the suspension permanent magnet shifts to optional one direction, a component force of a horizontal direction or a vertical direction of a resulting force born by the suspension permanent magnet is opposite to a shifting direction, thus the suspension permanent magnet can be quickly and accurately attracted to return to a balance position, and the sensitivity and the accuracy of monitoring are increased.

The invention discloses a hard disk storage cabinet, and relates to the technical field of storage devices. The hard disk storage cabinet solves the problem that a user cannot conveniently manage massive data resources in the prior art. According to the technical scheme, the hard disk storage cabinet comprises a power source, a machine cabinet body, a sealing door, an inner box body, a control circuit board, hard disk interfaces, one or more hard disk racks and a plurality of hard disk cartridges. The sealing door is arranged on the front side of the machine cabinet body. The inner box body is arranged inside the machine cabinet body. An interval exists between the inner box body and the machine cabinet body. The control circuit board is located inside the interval or arranged inside the inner box body. The hard disk racks are arranged inside the inner box body. The hard disk cartridges are arranged inside the hard disk racks. The hard disk interfaces are arranged on the rear sides of the hard disk cartridges and connected with the control circuit board. The control circuit board and the hard disk interfaces are powered by the power source. The hard disk storage cabinet can be applied to the field of data management.

The invention relates to the technical field of protective membranes, in particular to an anti-electromagnetic protective membrane and a preparation method thereof. The anti-electromagnetic protective membrane comprises a protective membrane layer, a use membrane layer and a stripping membrane which are sequentially attached from top to bottom. The protective membrane layer comprises a protective membrane body and a stripping adhesive layer attached to the lower surface of the protective membrane body. The use membrane layer comprises a base material attached to the lower surface of the stripping adhesive layer and an anti-magnetic adhesive layer attached to the lower surface of the base material, and the lower surface of the anti-magnetic adhesive layer and the upper surface of the stripping membrane are attached. By means of the anti-magnetic adhesive layer, the anti-electromagnetic protective membrane is good in anti-magnetic performance, simple in structure, stable in performance and good in compatibility between materials.

The invention discloses electric power communication equipment based on an electric power internet of things. The equipment comprises a main box body (3) and an upper box body (5) and the lower box body (2) connected to the upper end and the lower end of the main box body (3) respectively. A power communication equipment main body (16) is arranged in the main box body (3), transverse port grooves(8) are formed in the front ends and the rear ends of the upper box body (5) and the lower box body (2), and connecting assemblies are arranged in the upper box body (5) and the lower box body. According to the invention, through designing the connecting assembly, three installation modes of adsorption fixation, compression fixation and wall hanging fixation can be realized at the same time, and single use or mixed use can be selected according to needs, thereby facilitating the installation and fixation of the power communication equipment, enabling the power communication equipment to be fixed firmly, being very good in stability, and facilitating the use of the power communication equipment.

An anti-blue-light antimagnetic film and a preparing method thereof are disclosed. The film has a good antimagnetic property and good anti-blue-light effects, thus playing a role of protecting glasses of persons and protecting electronic elements. The film includes, from top to bottom, an upper release film, an anti-blue-light layer, an antimagnetic metal layer, an insulating substrate, an acrylic adhesive layer and a lower release film. The thickness of the anti-blue-light layer is 50-100 [mu]m. The thickness of the antimagnetic metal layer is 50-100 [mu]. The thickness of the carrier insulating substrate is 50-150 [mu]. Anti-blue-light and antimagnetic functions are combined, and therefore the anti-blue-light antimagnetic film not only protects eyes of persons from being damaged by blue light, but also protects electronic products from electromagnetic interferences.

The invention belongs to the current measurement technology field and more particularly, to a double magnetic circuit composite optic current transformer and its signal processing method, comprising the following elements connected in succession: a laser diode driver, a tail fiber equipped laser diode, a light splitter, a double magnetic circuit composite magnetic light sensing unit and photoelectric detectors wherein the double magnetic circuit composite magnetic light sensing unit comprises three parallel light path channels with each light path channel comprising the following elements connected in succession: an input collimator, a polarizer, magnetic light sensing materials, a polarization detector, and an output collimator, wherein the first magnetic light sensing material and the third magnetic light sensing material are both bar-shaped magnetic light sensing glass and are arranged in parallel and in symmetry at two sides of a powered conductor. The light penetration direction is vertical to the tested current flowing direction of the powered conductor; and the second magnetic light sensing material is a magnetic light sensing fiber that is wrapped on the powered conductor uniformly. The ends of the three light path channels are connected with three different photoelectric detectors respectively. The invention solves the problems with temperature sensitivity and electromagnetic interference.

The invention discloses a brush material for manufacturing an electric tool motor, relating to the field of materials. The brush comprises base powder and asphalt; in particular, the base powder comprises an aqueous solution of graphene; and the base powder further comprises graphite, silicon carbide and carbon fiber powder. The brush for the electric tool has moderate resistivity, low brush running spark grade, good commutation performance, good product stability, excellent abrasion resistance and electromagnetic interference resistance, and is especially suitable for medium and low power angle grinder motors.

The invention discloses a novel material for a hardware button. The novel material comprises, by weight, 0.55-1.5% of copper, 0.1-0.19% of titanium, 0.04-0.07% of magnesium, 0-0.06% of iron, 0-0.02% of aluminum, 0-0.002% of cadmium, 0-0.001% of tin and the balance zinc. The novel material for the hardware button has the effects that the weight percentage of zinc is large, so that the corresponding hardware button made from the novel material for the hardware button is made to have very good diamagnetism; the weight percentage of copper is small, so that the corresponding hardware button made from the novel material for the hardware button is made light in texture, and low in manufacturing cost and production cost; the proportion of magnesium enables the corresponding hardware button made from the novel material for the hardware button to have certain malleability and heat dissipation capability; the proportion of titanium enables to the corresponding hardware button made from the novel material for the hardware button to have certain metallic luster and strength; and the whole novel material for the hardware button is prepared by matching zinc, copper, titanium, magnesium, iron, aluminum, cadmium and tin, the corresponding hardware button made from the novel material for the hardware button is made to still have very high rigidity, and therefore, the novel material for the hardware button is excellent in performance.

The invention discloses a mini round four-core electric connector. The mini round four-core electric connector comprises a plug component and a socket component. The plug component comprises a plug shell. A jack base, a jack and a first cable are mounted in the plug shell. A connection ring and a plug bushing sleeve the plug shell. A clamp ring is arranged at the joint between the connection ringand the plug shell. The socket component comprises a socket shell. A pin base is mounted in the socket shell. A pin is fixed to the pin base. A second cable is connected with the pin. An O-ring is arranged on a waist pad of the socket shell. Locking nuts are mounted on two sides of the socket shell. The mini round four-core electric connector shares the features of high contact density and small size with round connectors, has the advantages of high density, lightweight and microminiaturization, can be applied to severe environments with high vibration and impact, is applicable to occasions with special requirements on space and equipment lightweight, and can be widely applied to aviation and spaceflight fields and environments with large environment temperature change.

The invention discloses a wear-resisting electromagnetic shielding modified polyformaldehyde material which is prepared from the following ingredients in parts by weight: 70 to 90 parts of polyformaldehyde, 10 to 20 parts of molybdenum disulfide, 5 to 10 parts of conductive carbon black, 0.5 to 5 parts of liquid dispersing agent, 0.2 to 0.8 part of metal passivator, 0.2 to 0.8 part of heat stabilizer and 0.2 to 0.5 part of antioxidant. The modified polyformaldehyde material disclosed by the invention is suitable for special environments related to weather resistance, long-acting lubrication, electromagnetic shielding and the like of communication base stations and the like.

The invention discloses a high-strength antimagnetic card case and a preparation method thereof. The preparation method of the high-strength antimagnetic card case comprises the following steps: 1) mixing polyethylene, an ethylene-vinyl alcohol copolymer, nano barium sulfate, nano gadolinium oxide, calcium sulfate whiskers, dibenzothiazyl disulfide, wollastonite powder, silicon nitride and choropropyltrimethoxysilane to obtain a mixture; and 2) mixing and molding pentaerythritol ester of rosin, potassium titanate whiskers, wheat bran, acrylic fiber copper complexed fibers, wood fibers and the mixture to prepare the high-strength antimagnetic card case. The high-strength antimagnetic card case prepared by the method has excellent antimagnetic and mechanical properties; and meanwhile, the preparation method has the properties of easiness of obtaining the raw materials, simple procedures and easiness of being popularized.

The invention provides an alloy material for a chip processing system of a marine drilling platform and a preparation method of the alloy material. The alloy material comprises components of raw materials as follows: C, Mn, Si, S, P, Cr, Ni, Mo, Cu, Ir, Mg, Al, V, W, Pb, Nb, Sn, Zn, Ho, Lu and the balance Fe. The preparation method comprises steps as follows: metal raw materials and nonmetal raw materials are sintered under the vacuum condition at the temperature of 950-1,000 DEG C, the sintered raw materials are cooled to 700 DEG C under the condition of inert gas pressurization for tempering, then are heated to 750 DEG C for annealing and are cooled finally, and a finished product of the material for the chip processing system of the marine drilling platform is obtained. The alloy material has antirust performance, antimagnetic performance, pressure resistance and seawater corrosion resistance and is not prone to deformation.

The invention relates to a high strength and long life check valve and a manufacturing method thereof. The check valve comprises a check valve main body, an installation seat matched with the check valve main body, a sealing end arranged at the right end of the installation seat, and an oil inlet formed in the check valve main body; the check valve further comprises a spring fixed in the check valve main body, a spring seat, an arch feeding device arranged at the right end of the spring seat and a support column which is used for fixing the arch feeding device and arranged in the right end of the arch feeding device and can obtain a tapered forged flow line inclining to an inner hole in a centralized mode through square-to-circular hot extrusion and rotary forging ,. The check valve can achieve self-complementing of expansion under the high temperature and is high in safety.