23results about How to "Reduce magnetism" patented technology

The invention relates to the technical field of land surveying and mapping, and discloses a surveying and mapping positioning device for land surveying and mapping, which comprises a fixed table, a supporting table, a connecting frame and a servo motor, and further comprises a rotating table and a top seat, the connecting frame is fixedly connected to the inner side of the lower end surface of the fixed table, and the supporting table is fixedly connected to the outer side of the lower end surface of the fixed table; the servo motor is fixedly connected with the connecting frame through the rack, and the output shaft end of the servo motor is fixedly connected with the rotating table; the lifting mechanism is arranged on the lower end face of the supporting table, and the lifting mechanism is used for adjusting the height of the supporting table; the clamping mechanism is arranged between the rotating table and the fixed table; and the cleaning mechanism is arranged on the side wall of the adjusting clamping plate. Through the arrangement of the clamping mechanism, the surveying and mapping instrument can be quickly limited, so that the surveying and mapping instrument is prevented from toppling over when the surveying and mapping instrument is used in severe weather, and the safety of the surveying and mapping instrument during use is ensured.

The invention discloses a multi-storage-location aging test device, and relates to the technical field of new energy battery pack testing. The multi-storage-location aging test device comprises a base, the top of the base is fixedly connected with a test mechanism, and the outer wall of the base is fixedly connected with a U-shaped bin. According to the multi-storage-location aging test device, the flowing assembly is matched with the moving assembly, a heater generates heat, a fan blows airflow to perform all-dimensional uniform temperature rise on a battery pack in the test bin through an airflow hole, an electric sliding block drives the heater and the fan to change the airflow direction through the arc-shaped design of a sliding rail, and multi-angle temperature rise is achieved; the device can place a plurality of battery packs into the test bin to be tested, the test efficiency is improved, meanwhile, the electromagnetic mechanism is used for heating the side face of the test bin, the heater is combined with heat conduction of the bottom of the test bin, comprehensive heating of the battery packs is achieved, and the reliability of the test result is ensured.

The invention relates to a spraying component and a coating product rotary spraying machine comprising the spraying component. The invention relates to a spraying member (30) for a rotary coating machine (2) for coating products, which carries at least one weight (40) for mechanical locking on a drive shaft (16) of the rotary coating machine. The weight is movable radially with respect to a central axis (A30) of the bowl and in a centrifugal direction with respect to said central axis between an unlocked position, in which the weight does not block the mounting of the spray member (30) on the drive shaft (16) or does not block the dismounting of the spray member with respect to the drive shaft, and a locked position, in which the weight does not block the mounting of the spray member (30) on the drive shaft (16) or does not block the dismounting of the spray member with respect to the drive shaft. The weight blocks detachment of the bowl relative to the drive shaft.

The invention discloses a device for preventing a battery from being overcharged, and belongs to the technical field of stainless steel plate machining.The device for preventing the battery from being overcharged comprises a child protection barrel and a mother protection barrel which are symmetrically arranged, and the inner side of the child protection barrel and the inner side of the mother protection barrel are provided with two symmetrically-arranged fixed supporting seats; the child protection barrel and the mother protection barrel can form a cylindrical structure to protect an internal structure, the fixed supporting seats fixedly support the internal structure, the two fixed supporting seats are rotationally connected with two symmetrically arranged splitting power-off groove plates, the splitting power-off groove plates can control on-off of a circuit, overcharging of a battery is avoided, and the safety of the battery is improved. And an electromagnetic on-off structure is arranged between the splitting power-off groove plate and the fixed supporting seat. By arranging the electromagnetic on-off structure, the charging circuit can be disconnected under the condition of trickle charging, and the situation that the service life of a battery is shortened or electric shock is caused by overheating short circuit due to trickle charging after the battery is fully charged is avoided.

This invention provides a TiC-based non-magnetic alloy, its preparation, and its application. The TiC-based non-magnetic alloy comprises, by weight percentage: Ni 25–40 wt%, Cr 5.5–8.6 wt%, Mo 2.5–4.0 wt%, C 0.8–1.3%, TiC 46–66 wt%, and other unavoidable trace impurities. The TiC-based non-magnetic alloy comprises TiC, Ni, Cr, Mo, and C, with appropriate proportions of each component, resulting in low magnetic properties, high hardness, high wear resistance, high-temperature performance, oxidation resistance, and corrosion resistance. Furthermore, the hard phase uses TiC, which has a low self-lubricating coefficient, and excludes WC. Therefore, the TiC-based non-magnetic alloy has a uniform grain size distribution, good internal stress consistency, and is less prone to cracking and deformation, extending its service life and demonstrating good product stability.

The utility model relates to a multifunctional heating plate, which comprises a furnace body, an electromagnetic generating device, a heating device and a controller, the electromagnetic generating device and the heating device are respectively arranged in an inner cavity of the furnace body, and the controller is respectively and electrically connected with the electromagnetic generating device and the heating device. The controller controls the electromagnetic generating device to generate a changing magnetic field or controls the heating device to be electrified to generate heat. And the induction cooker and the electric ceramic cooker are combined into one heating device, so that the space occupied by kitchen equipment is obviously reduced. The method is particularly beneficial to household kitchens or commercial kitchens with limited space, so that the kitchen layout is simpler and more efficient.

This utility model discloses a dust collection device for busbar cutting, comprising: a support member, a magnetic suction member, and a collection assembly; the support member has a through hole, and the support member is sleeved on the busbar through the through hole; the support member has an annular groove surrounding the busbar and opening towards the end of the busbar; the magnetic suction member is installed on the support member located on the back of the annular groove, magnetically attracting dust into the annular groove; the collection assembly is installed below the support member and communicates with the annular groove. This reduces the splashing of iron filings and dust, improves safety, and provides a certain degree of protection for the surrounding environment and personnel. It also reduces the penetration of iron filings and dust deep into the busbar, lowers the difficulty of cleaning, and reduces labor intensity. Furthermore, it prevents splashed iron filings from damaging the busbar, maintaining a good appearance for the busbar, reducing the rate of corrosion caused by impurities, and extending its service life.

The invention relates to the technical field of petrochemical engineering catalytic materials, in particular to an oil-soluble iron-based catalyst and a preparation method and application thereof.The preparation method comprises the steps that fatty acid and high-polymer organic acid serve as organic acid ligands, and under the alkaline condition, the fatty acid, the high-polymer organic acid and soluble iron salt are mixed to obtain a mixture; reacting carboxyl in fatty acid and high polymer organic acid with iron ions in soluble iron salt to obtain an oily polyisobutylene maleic acid iron complex; the preparation method comprises the following steps: by taking an oily polyisobutylene maleic acid iron complex as a precursor, reacting the precursor at 120-180 DEG C to obtain the amorphous oil-soluble iron-based catalyst. Due to the amorphous structure of the oil-soluble iron-based catalyst prepared by the method, the oil-soluble catalyst has higher stability and is not easy to inactivate. The oil-soluble iron-based catalyst is subjected to a hydrothermal cracking reaction, heavy oil molecules can be cracked into small molecule compounds, the boiling point of the heavy oil is reduced, a large amount of light oil is generated, and the viscosity of the heavy oil is reduced.

The invention relates to a sulfydryl silicon dioxide coated magnetic biochar material, a preparation method thereof and an application of the sulfydryl silicon dioxide coated magnetic biochar material in adsorbing and removing cadmium ions, the material takes biochar prepared from aquaculture byproducts as a substrate, and Fe3O4 magnetic particles, a silicon dioxide coating layer and a sulfydryl functional group are loaded in sequence. The method comprises the following steps: firstly, synthesizing magnetic biochar containing SiO2-coated Fe3O4 particles on the surface by a coprecipitation method under an alkaline condition, and then carrying out sulfydryl modification on the magnetic biochar by a grafting method to finally prepare the sulfydryl-modified silicon dioxide-coated magnetic biochar adsorbent. The adsorbent prepared by the method has the characteristics of high specific surface area, abundant pore structures, a large number of sulfydryl active groups and the like, shows high adsorption capacity and good selectivity on cadmium ions in water, and can be conveniently separated and recycled through magnetism. The material can also be used for adsorbing lead, copper, zinc, chromium and other heavy metal ions, the preparation process is simple, and the material has wide application prospects in the field of heavy metal wastewater treatment.

The utility model relates to the technical field of samarium cobalt magnetic steel, and discloses samarium cobalt magnetic steel for instruments and meters, which comprises a magnetic steel main body, a groove is arranged on the surface of the magnetic steel main body, a heat conduction column is fixedly connected to the inner wall of the groove, and an inner cylinder is fixedly connected to the bottom of the magnetic steel main body. First transverse plates are fixedly connected to the surface of the inner cylinder, the bottom of the magnetic steel body and the bottom of the heat conduction column, a second transverse plate is fixedly connected to the surface of the inner cylinder, outer cylinders are fixedly connected to the upper surface of the second transverse plate and the bottoms of the first transverse plates, and mounting holes are formed in the first transverse plates. According to the samarium-cobalt magnetic steel, through cooperation of the magnetic steel body, the groove, the heat conduction column, the inner cylinder, the first transverse plate, the second transverse plate, the outer cylinder, the mounting hole, the cooling fan, the first air hole and the second air hole, heat of the magnetic steel body can be rapidly dissipated, and therefore magnetism of the samarium-cobalt magnetic steel cannot be reduced due to the fact that the temperature is too high.

This utility model provides a magnetic levitation low-friction dual-hub device suitable for heavy-duty medical equipment, belonging to the technical field of hub devices. This magnetic levitation low-friction dual-hub device for heavy-duty medical equipment includes an outer load-bearing hub, an inner drive hub, radial ceramic bearings, and an axial magnetic levitation module. The outer load-bearing hub is sleeved on the outside of the inner drive hub. The radial ceramic bearings are disposed between the outer load-bearing hub and the inner drive hub, and are connected to the inner wall of the outer load-bearing hub and the outer wall of the inner drive hub, respectively. The axial magnetic levitation module is disposed at the end of the outer load-bearing hub away from the radial ceramic bearings, and is connected to the end of the outer load-bearing hub. This invention solves the problems of high friction coefficient, high movement resistance, heavy operating burden for medical personnel, and difficulty in meeting the frequent movement requirements of traditional heavy-duty medical equipment hub systems.

The invention relates to the technical field of injection molding machines, in particular to a quick mold changing device of an injection molding machine, which comprises a base, an electromagnet I is arranged in the base, the electromagnet I is used for adsorbing and positioning a mold, a lock catch for locking the mold is arranged on the base, and a buffer device and a swing limiting device are arranged on the base. The buffer device is used for centralizing a mold to a mold mounting surface of the injection molding machine by virtue of elastic force and hydraulic force, and the swing limiting device is used for balancing the elastic force of the buffer device; the buffering device comprises an installation hole formed in the base, a hydraulic cylinder is fixedly installed in the installation hole, a piston rod of the hydraulic cylinder is provided with a starting switch, and the starting switch is electrically connected with the hydraulic cylinder. A buffer spring is fixedly installed in the installation hole and arranged on the hydraulic cylinder in a sleeving mode. The problem that the mold mounting surface of the injection molding machine is damaged due to swinging of the mold in the hoisting process is solved.

The invention discloses an electron beam laminated solidification NiW alloy composite base band billet and a preparation method thereof, and belongs to the technical field of preparation of high-temperature coating superconductor metal base band billets. The blank is bombarded by electron beams with high energy density to generate heat energy to melt the blank, so that the blank at each incremental layer and an interlayer interface is kept in a molten state, and good metallurgical bonding is realized in a solidification process. According to the method, the thickness of each layer of NiW alloy in a composite billet with the upper layer and the lower layer made of low W-NiW alloy and the middle layer made of high W-NiW alloy is flexibly adjusted by adjusting the depth of a molten pool and the number of times of lamination solidification which are controlled by electron beam power and smelting time, the W content of the upper NiW alloy layer is 3-7 at.%, the W content of the lower NiW alloy layer is 3-7 at.%, and the W content of the middle NiW alloy layer is 9-13 at.%. Alloy layers with different components in the composite base band are connected in a metallurgical bonding mode, the layers are not prone to cracking in the cold rolling process, the surface cubic texture content is high, the mechanical property is good, the magnetism is low, and the method is suitable for preparing the ultra-long metal base band billet.

The utility model relates to a kaolin deironing device which comprises a deironing assembly and a cleaning assembly, the deironing assembly comprises a first transmission roller, a second transmission roller and a third transmission roller, the first transmission roller, the second transmission roller and the third transmission roller are connected through a conveying belt, and a magnetic plate is installed at the lower end of the upper portion of the conveying belt; the cleaning assembly comprises a scraping plate and a spray head. Slurry flows to the conveying belt close to the first transmission roller, iron removal is conducted on the slurry through the conveying belt on the magnetic plate under the gravity action of the slurry, meanwhile, the conveying belt is transmitted in the direction opposite to the slurry flowing direction, clay and scrap iron remaining on the conveying belt are scraped away through a scraping plate at the position where the slurry flows, and the slurry flows through the conveying belt. And then the conveying belt is cleaned through a spray head, so that clay in the kaolin is not adhered to the conveying belt in the iron removal process, the magnetism of the magnetic plate is reduced, and the iron removal effect and the quality of slurry are not influenced.

The application relates to the technical field of inorganic functional material preparation, and is a production process of low-magnetic nickel protoxide, which comprises the following steps: pretreatment of a nickel chloride solution: pretreating nickel chloride hexahydrate to obtain pretreated nickel chloride solution; preparation of coarse nickel protoxide: pumping the pretreated nickel chloride solution into a centrifugal atomizer of a spray pyrolysis device to form fine mist droplets, the mist droplets entering a pyrolysis furnace along with compressed air, three temperature zones being arranged in the pyrolysis furnace, and the coarse nickel protoxide being prepared by precisely controlling temperature and gas amount; and preparation of a low-magnetic nickel oxide product; the application takes the nickel chloride solution as raw material, controls the pretreatment complexing agent, optimizes spray pyrolysis atomization parameters and carries out low-temperature ball milling dispersion, so that the magnetic property is reduced, the particles are uniformly dispersed and there is no obvious agglomeration phenomenon, the low-magnetic, small-particle-size nickel protoxide product is prepared, and the problems of high product magnetic property, large particle size and serious agglomeration in the preparation of the nickel protoxide by taking the nickel chloride solution as raw material in the prior art are solved.

The invention provides a method for preparing an anisotropic composite material through hot pressing, La-Fe-Si-based alloy powder with a certain particle size and CrMnFeCoNi alloy powder with a certain particle size are mixed in proportion and then are hot-pressed to prepare a cylindrical composite material, the main phase of the composite material is a 1: 13 pure phase of La-Fe-Si alloy, the second phase is an fcc pure phase, and the specific surface area of the composite material is 1: 10. And the second phase is in lamellar distribution and has certain directivity, so that the mechanical properties in the horizontal direction and the vertical direction are greatly different. According to the invention, reasons of Curie temperature and magnetocaloric performance changes of the composite material are researched through an X-ray diffraction pattern and element distribution; in the pressurizing process of powder metallurgy, due to the fact that the pressure transmission efficiency in the vertical direction and the pressure transmission efficiency in the horizontal direction are different, the second phase generates plastic deformation of different degrees in different directions.

The utility model discloses a chipping treatment device for laminated steel plate forming machining, and relates to the technical field of steel plate chipping treatment, the chipping treatment device comprises a device body and an electromagnetic feeding mechanism, the electromagnetic feeding mechanism is arranged in the device body, and through arrangement of a vibration sorting assembly, machining chippings of laminated steel plates can fall off from the position of a scraping plate; meanwhile, the sorting fan is started to blow inwards with certain wind power, small fines are blown into the fines collecting box, redundant machining chippings of the laminated steel plates can fall onto the chipping sorting plate, secondary sorting is conducted through meshes of different sizes in the chipping sorting plate, and then classified collection is conducted through the chipping sorting box; and meanwhile, a telescopic vibrator is started to rapidly vibrate the chipping separation plate, the situation that chippings are accumulated on the chipping separation plate and the chipping separation plate is blocked is avoided, the efficiency and effect of separation of the machining chippings of the laminated steel plate are improved, and the recovery value and the reutilization efficiency of materials are improved.

The application relates to a preparation method of a magnetic lithium ion sieve coated with Fe-doped ZrO2, and relates to a preparation method of a lithium ion sieve. 3+ The application creatively adopts Fe-doping and ZrO2 coating to prepare the magnetic lithium ion sieve, simultaneously reduces the dissolution loss of manganese and iron by means of metal cation ion doping and coating, realizes efficient solid-liquid separation, greatly increases the service life of the lithium ion sieve, and is applicable to lithium extraction from various lithium-containing solutions due to the acid and alkali resistance of ZrO2. The method comprises the following steps: 1, preparing FO; 2, preparing LMFO; 3, preparing ZrO2@LMFO; and 4, preparing ZrO2@HMFO. The process is simple in preparation, the dissolution loss of manganese and iron tends to be stable in multiple cycles, the magnetic separation performance is good, the process is applicable to mass production, and is helpful to the industrialization progress of lithium extraction from salt lake brine.

The utility model discloses a magnetic scraper and a cutting fluid circulating filtering device thereof, and aims to overcome the defect that scrap iron is difficult to scrape due to the magnetism of an existing magnetic wheel to the scrap iron. The magnetic scraper comprises a magnetic scraping roller and a chip scraping plate, the plate edge of the chip scraping plate is attached to the side wall face of the magnetic scraping roller, the magnetic scraping roller is provided with a plurality of electromagnets, the electromagnets are arranged in the magnetic scraping roller around the axis of the magnetic scraping roller at equal intervals, electric brushes are arranged on the two end faces of the magnetic scraping roller around the axis at equal intervals, and the electric brushes are electrically connected with the electromagnets at the corresponding positions. Conductors are arranged at the two ends of the magnetic scraping roller respectively, fixedly-arranged contact rings are arranged at the ends of the wires, the contact rings make sliding contact with the electric brushes so that the electromagnets and the wires can form a path, and the contact rings are provided with notches which are formed in the positions corresponding to the scrap scraping plates. The electric brush and the contact ring are used for achieving disconnection of a specific position and connection of the other part, so that the adsorption force of the magnetic scraping roller to scrap iron is adjusted at different positions, and the scrap iron is easily released on the scrap scraping plate on the premise that the scrap iron is efficiently adsorbed from cutting fluid.

The invention discloses a numerical control machining tool facilitating chip removal, and relates to the technical field of machine tools with driving. The numerical control machining tool facilitating chip removal comprises a storage box, a numerical control machining part is fixedly connected to the outer wall of the storage box, a door plate is clamped to the outer wall of the storage box, and an impact mechanism is fixedly connected to the outer wall of the numerical control machining part. According to the numerical control machining machine tool facilitating chip removal, by arranging the impact mechanism, chips generated in the machining process can fall into the storage box through airflow blown out by the draught fan, the problem that the machining precision of parts is affected by chip accumulation during machining of the machine tool is effectively solved, cleanliness of a machining area is ensured, a good environment is provided for high-precision machining, and the machining efficiency is improved. Moving devices in the numerical control machining part can change the positions of the machining device and the workbench under program control, so that the impact mechanism can move along with the machining device, and efficient chip removal is achieved while workpieces are machined at different positions.

The invention discloses a water-based quenching liquid for degaussing large-diameter 304 stainless steel and a use method, and the water-based quenching liquid is characterized by comprising the following components: 90-200g / L of NaOH, 50-180g / L of NaCl, 30-150ml / L of ethylene glycol, 5-30g / L of sodium polyacrylate and the balance of water. The quenching liquid provided by the invention can reduce the generated magnetism in the cooling process of the 304 stainless steel part. Compared with the prior art, the formula is simple in composition, convenient to produce and prepare and low in use cost; the magnetism of 304 stainless steel parts is reduced, the strength of a stainless steel contact system can be improved, and the service life of the stainless steel contact system can be prolonged.