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A filter holder
ActiveCN224287319UAchieving Co-regulationincrease diversityMountingsCamera body detailsFixed frameControl theory
The utility model discloses a filter support, including fixed frame, two active elements, two driven module and transmission part. Active element and driven module all are opposite fixed frame mobile setting, and transmission part is opposite fixed frame rotation setting. Two active elements and two driven module are along annular arrangement, and a driven module is located between two active elements. Active element and transmission part transmission connection, and driven module also with transmission part transmission connection. When active element is opposite fixed frame mobile, can drive transmission part opposite fixed frame rotation, and then promotes driven module to move to the same mobile direction with active element. The structure realizes the cooperation of active element and driven module through transmission part, improves the adjustment flexibility, can better adapt to different caliber lens, reduces the dark corner, satisfies the diversified shooting demand.
Owner:ZHONGSHAN LAOYU PHOTOGRAPHY TECH CO LTD
Wide-temperature low-loss high-bs manganese-zinc ferrite material and manufacturing method thereof
PendingCN122079612Areduce lossBs highTransformers/inductances magnetic coresManganeseMagnetocrystalline anisotropy
This invention relates to the field of manganese-zinc ferrite materials technology, and discloses a wide-temperature, low-loss, high-Bs manganese-zinc ferrite material, comprising a main component and auxiliary components. The main component consists of Fe2O3, ZnO, and MnO, while the auxiliary components consist of Co2O3, Ca2CO3, Nb2O5, ZrO2, SiO2, NiO, SnO2, and TiO2. The total amount of auxiliary components relative to the main component is calculated as a weight percentage. This invention compensates for the magnetocrystalline anisotropy constant K1 of the ferrite matrix by adding multiple auxiliary components and optimizing the combination of their addition amounts. This reduces the magnetocrystalline anisotropy constant K1 over a wide temperature range, achieving characteristics such as wide-temperature, low-loss, and high Bs. By controlling the addition range of the main and auxiliary components, the process enables the manganese-zinc ferrite to possess both low-loss and high-Bs characteristics at different temperatures.
Owner:BAOSTEEL MAGNETICS (JIANGSU CO LTD
Hollow sandwich steel pipe concrete column and preparation method and application thereof
Owner:YANBIAN UNIV
A method for preparing high-purity phosphorus pentafluoride gas
This invention belongs to the field of inorganic fluoride preparation technology, and relates to a method for preparing high-purity phosphorus pentafluoride gas. A phosphorus pentafluoride mixed gas is passed into dimethyl carbonate, and the mixture is sequentially heated and pressurized for reaction, cooled to precipitate, and filtered to obtain a phosphorus pentafluoride complex solid. The phosphorus pentafluoride complex solid is then sequentially washed, re-dissolved, and distilled to obtain high-purity phosphorus pentafluoride gas. Compared to traditional methods using multi-stage distillation and washing, this method can efficiently and easily remove impurities such as hydrofluoric acid and hydrogen chloride from the phosphorus pentafluoride gas, and does not generate a large amount of waste acid. The purity of the prepared gas is above 99.9%, and the gas yield is above 90%. When high-purity phosphorus pentafluoride gas is used in lithium-ion batteries, it can meet the performance requirements of lithium-ion battery electrolytes.
Owner:DO FLUORIDE CHEM CO LTD
A two-phase solid-state electrolyte powder and a method of preparing the same
This invention relates to the field of solid-state battery technology and discloses a dual-phase solid electrolyte powder and its preparation method. The dual-phase solid electrolyte powder is a uniform composite of LATP (lithium aluminum titanium phosphate) and LLZTO (lithium lanthanum zirconium tantalum oxide), with a LATP to LLZTO weight ratio of 1:2 to 2:1, a particle size of 1 to 3 μm, and an ionic conductivity ≥2.3 × 10⁻⁶. ‑ ³S / cm. Its preparation method includes LATP precursor solution preparation, slurry preparation, spray pyrolysis, and high-temperature calcination steps. This invention, through the synergistic effect of a two-phase structure, combines the high bulk ionic conductivity of LATP with the good interfacial stability of LLZTO, effectively reducing interfacial impedance and suppressing Ti in LATP. 4+ The reduction reaction improves lithium-ion transport efficiency and cycle stability. Batteries using this electrolyte can achieve an initial discharge capacity of over 176 mAh / g, retain ≥88% capacity after 200 cycles, and exhibit excellent safety performance, making it widely applicable to various solid-state lithium-ion batteries.
Owner:KUNSHAN BLACK ROCK NEW MATERIAL TECH CO LTD
Replaceable probe four-probe probe
The utility model relates to a four-probe probe head with replaceable probes, specifically refers to a four-probe probe head composed of probes, probe sleeves, insulating probe bases, probe sleeve fixing pieces, elastic washers, mounting seats, waterproof joints and four-core cables, wherein the probes can be quickly replaced through simple pulling and inserting. The utility model can be widely used in the process monitoring and online detection of the research and development testing and production process of semiconductor materials and devices.
Owner:ZHUHAI KAIWEI INSTR EQUIP CO LTD
An inductor structure and its fabrication method
ActiveCN121812331Bshort completenessAvoid Yield ImpactTransformers/reacts mounting/support/suspensionTransformers/inductances coils/windings/connectionsElectrical connectionHemt circuits
This invention belongs to the field of electronic component technology and discloses an inductor structure and its preparation method. The inductor structure includes: a base with mounting holes; a permanent core rod installed in the mounting holes of the base; a coil winding wound around the permanent core rod, with at least a portion of the free end of the coil winding folded around the surface of the base, the free end serving as an electrical connection portion for electrical connection with an external circuit; and a package tightly encapsulating the permanent core rod, coil winding, and base, with the electrical connection portion located on the outside of the package. The preparation method of the inductor structure includes the following steps: assembling a temporary core rod and base, winding the coil winding, processing the electrical connection portion, folding and fixing the coil winding, replacing the core rod, and processing into a finished product in a molding die. The above-mentioned inductor structure preparation method is simple to operate and has simplified steps, which shortens the production cycle while improving the yield rate of inductor products, resulting in low product loss and low impedance.
Owner:UTOP ELECTRONICS GUANGZHOU
Differential switching device and analog switch chip
ActiveCN115940914Bhigh bandwidthLower on-resistanceElectronic switchingElectric digital data processingControl circuitTesting Methods
This invention provides a differential switch device and an analog switch chip, relating to the technical field of signal transmission. The differential switch device and analog switch chip provided by this invention include an analog switch and a control circuit connected to the analog switch in the switching unit of the differential switch device. The control circuit includes a logic operation unit and a voltage conversion unit connected to the control terminal of the analog switch. The logic operation unit is used to acquire the differential signal input from the input interface, perform logic operations based on the differential signal, and output a first voltage signal to the voltage conversion unit. The voltage conversion unit is used to convert the first voltage signal, output a second voltage signal corresponding to the first voltage signal, and input the second voltage signal to the control terminal of the analog switch to control the analog switch. During the control process, this helps to ensure the linearity of the analog switch, not only meeting users' requirements for different performance and reliability, but also helping to improve the transmission efficiency of high-frequency signals.
Owner:3PEAK INC
A low-cost, high-corrosion-resistant micro-arc oxidation film on magnesium alloy and its preparation method
ActiveCN121496531BInhibition formationreduce voltageAnodisationElectrolytic agentMicro arc oxidation
This invention relates to the field of metal surface treatment technology, specifically to a low-cost, high-corrosion-resistant micro-arc oxidation film for magnesium alloys and its preparation method. First, the magnesium alloy workpiece is pretreated. Then, an electrolyte for the micro-arc oxidation process is prepared. The pretreated magnesium alloy workpiece is used as the anode, and stainless steel as the cathode, placed in the electrolyte for micro-arc oxidation, ultimately yielding a dense oxide film. This invention utilizes an externally controlled electrical parameter process of "online monitoring and regulation control + composite carrier wave," combined with a low-energy-consumption electrolyte system, to achieve the desired dense oxide film. The main components of the oxide film are magnesium silicate, magnesium phosphate, magnesium oxide, magnesium fluoride, and zirconium oxide, resulting in high film hardness and improved wear resistance. It achieves a neutral salt spray test rating of ≥480h (10μm) at level 9, meeting the performance requirements of automotive parts and suitable for large-scale industrial production, with a comprehensive energy consumption reduction of 50%~60%.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Ti2AlNb alloy rods, their preparation methods and applications
The application relates to the technical field of Ti2AlNb alloy processing, in particular to a Ti2AlNb alloy rod and a preparation method and application thereof. The preparation method of the Ti2AlNb alloy rod comprises the following steps: performing upsetting and drawing cycles on Ti2AlNb alloy ingots at 1050-1170 DEG C, 1010-1040 DEG C and 920-950 DEG C respectively; the number of the upsetting and drawing cycles at each temperature range is at least 3 times; and the deformation amount in the upsetting and drawing cycles is 25%-60%. The preparation method reduces the temperature points of rod forging, the upsetting and drawing forging needs 3 times of furnace loading, through the mode of multiple times of furnace re-melting of the same temperature hot material, the forging process is effectively shortened under the condition of guaranteeing that the quality of the rod is not reduced, the rod yield is increased to more than 75%, and meanwhile, the flaw detection level is obviously improved, the flaw detection level of the Ti2AlNb alloy rod with a diameter of 400 mm is increased from Phi 3.2 mm-6dB to Phi 2.0 mm-6dB.
Owner:GAONA AERO MATERIAL CO LTD +1
A magnetic composite material, its preparation method, and magnetic devices prepared therefrom.
ActiveCN121191872Blow costEase resource dependenciesPermanent magnetsInorganic material magnetismElastomerCerium
This invention discloses a magnetic composite material, its preparation method, and magnetic devices prepared using the same, belonging to the technical field of bonded magnetic composite materials. The invention provides a magnetic powder comprising 0.5-4.5 wt.% lanthanum, 5.0-9.0 wt.% cerium, 2.5-4.0 wt.% praseodymium, 9.0-16.0 wt.% neodymium, 1.0-4.0 wt.% zirconium, 0.1-1.0 wt.% aluminum, 0.5-1.5 wt.% boron, with the remainder being iron (Fe). It also provides a magnetic composite material comprising 83-93 parts of the magnetic powder, 0.2-2 parts of a coupling agent, 7-17 parts of a resin polymer, 0.5-3 parts of a polymeric elastomer, and 0.1-0.5 parts of a lubricant. The magnetic composite material disclosed in this invention, when applied to magnetic devices, possesses characteristics such as low cost, low thermal demagnetization, high magnetic properties, and excellent mechanical and processability, meeting the requirements for magnetic devices in thermal management systems.
Owner:HANGZHOU QIANSHI TECH +1
High-reliability elastic washer for lead screw
PendingCN122236799Ameet performance requirementsreduce manufacturing costNon-rotating vibration suppressionGearing
A high-reliability ball screw elastic washer is disclosed, relating to the field of ball screw elastic washer technology, addressing the technical problems of poor reliability, poor structural rigidity, easy deformation, and poor dynamic response of existing ball screw washers. This elastic washer is applied to a workpiece. The method involves fitting elastic washers to the upper and lower ends of the last stage of the ball screw assembly, which is installed within a housing, with a cover plate mounted on the elastic washer. An external drive device drives the ball screw to move. During the reciprocating motion of the ball screw nut along the length of the ball screw, a radial impact force is generated on the housing. The elastic washer's elasticity dampens and buffers this radial impact force from the reciprocating motion of the ball screw assembly, ensuring that the dynamic response test of the servo mechanism meets performance requirements.
Owner:贵州航天控制技术有限公司
Highly heat-conductive electrical castable and preparation method thereof
PendingCN122278137AImprove the interface binding forceImprove transfer efficiencyPolymer scienceBusbar
This invention discloses a high thermal conductivity electrical casting refractory and its preparation method. The casting refractory contains, by weight: 75-90 parts inorganic filler, 7-13 parts bisphenol A type liquid epoxy resin, 2-5 parts aliphatic diglycidyl ether reactive diluent, 7-13 parts alicyclic anhydride curing agent, 0.2-1.2 parts monoalkoxy type titanate coupling agent, and 0.01-0.5 parts curing accelerator. The inorganic filler is a gradient particle size compound, comprising 80%-95% large-particle-size (500-2000 μm) quartz sand and 5%-20% small-particle-size (23-120 μm) alumina, modified by the coupling agent. The modified inorganic filler is mixed with resin, diluent, curing agent, and accelerator, and after degassing under reduced pressure, cured in stages at 80℃-160℃. This invention constructs a continuous thermal conductivity path with a thermal conductivity ≥2.0 W / (m·K) after curing. It also features high insulation, high mechanical strength, excellent heat resistance and flame retardancy. The process is simple and low-cost, and it is suitable for electrical equipment such as busbars, instrument transformers, and transformers.
Owner:ZHULI JINGDIAN ELECTRICAL TECH (YANTAI) CO LTD
A low-corrosion, high-temperature energy storage molten salt and its method
PendingCN122080870Ameet performance requirementsContinuous and reliable operation
This invention discloses a low-corrosion high-temperature energy storage molten salt and its method. The molten salt composition includes 20%~30% potassium chloride, 20%~30% sodium chloride, 1%~5% aluminum powder, 1%~5% magnesium powder, 1%~5% zinc powder, and the remainder is magnesium chloride. This invention discloses a low-corrosion high-temperature energy storage molten salt with high stability, low corrosivity, a simple preparation process, and ease of large-scale production. It can achieve excellent thermal storage performance at 600℃~800℃ with low corrosivity, has a large latent heat of phase change, high energy utilization rate, and low requirements for the material grade of metal load-bearing components such as tanks and pipelines, which can significantly reduce the cost of solar thermal engine composite materials.
Owner:XIAN THERMAL POWER RES INST CO LTD
Electronic brake housing and method of manufacture
ActiveCN116279372BEnsure consistencyGuaranteed stabilityBraking componentsDomestic articlesBrakeResolver
The application discloses an electronic brake shell and a processing method, and relates to the technical field of electronic brakes, which comprises a plastic shell, a signal terminal, a power terminal and two kinds of sealing glue. The signal terminal and the power terminal are directly injection molded on the plastic shell, and the signal terminal and the power terminal are designed with three different specifications, a total of 38. The plastic shell further comprises a motor phase lead frame and a resolver lead frame, which are installed inside the plastic shell. The plastic shell further comprises a stroke sensor terminal and a grounding terminal. The grounding terminal specifically comprises a mechanical holding terminal and a grounding spring. In the application, the resolver lead frame adopts a pre-injection molding and cutting method, which greatly improves the pin efficiency, stabilizes the product quality, not only meets the production capacity demand of customers, but also reduces the manufacturing cost of products, and has obvious cost advantage in stamping, electroplating and inlay injection molding, and can greatly shorten the molding cycle.
Owner:易纳纬(杭州)智能科技有限公司
A high-performance rare earth marine engineering steel plate and its production method
A high-performance rare-earth marine engineering steel plate and its production method belong to the field of steel material processing technology. Its chemical composition and mass content are: C: 0.05-0.08%, Si: 0.30-0.40%, Mn: 1.40-1.50%, P≤0.009%, S≤0.0020%, Cr: 0.10-0.20%, Al: 0.020-0.040%, Ce: 0.008-0.012%, with the balance being Fe and unavoidable impurities. The production method includes stepped heating, rolling, and rapid cooling after rolling; it does not include a tempering process. This invention, by adding a high Ce content, eliminates the need for adding precious metal elements such as Ni, V, and Nb. Combined with stepped heating and rapid cooling after rolling, it fully refines the grains, improves comprehensive mechanical properties, and eliminates the need for tempering and offline quenching + tempering. The production process is simple, low-cost, and yields steel plates with excellent comprehensive mechanical properties.
Owner:HBIS GROUP CO LTD +2
Electrochromic ion storage layer thin film and method of making same
ActiveCN116540465BImprove electrochromismImprove electrochemical performanceNon-linear opticsEthylic acidElectrochemistry
This invention discloses a method for preparing an electrochromic ion storage layer thin film, comprising the following steps: S1: reacting terephthalaldehyde or a terephthalaldehyde derivative with 2-acetylpyridine or a 2-acetylpyridine derivative to generate 1,4-bis[1,5-dioxo-1,5-bis(2-pyridyl)pentan-3-yl]benzene or a derivative thereof; then reacting it with ammonium acetate to obtain an organic ligand; reacting it with RuCl2(DMSO)4 to obtain a metal supramolecular polymer; S2: mixing it uniformly with a solvent and dimethylformamide to obtain an electrochemical deposition precursor solution; S3: depositing it at a constant potential via electrochemical deposition to obtain the electrochromic ion storage layer thin film. The thin film prepared by this invention not only has advantages such as fast response speed, high coloring efficiency, and wide optical modulation range, but also has good cycling stability.
Owner:NINGBO MI RUO ELECTRONICS TECH CO LTD +1
A Semantic Rule Network Partitioning Method and Device Based on Urban Social Governance Database
ActiveCN116187447Breduce in quantitymeet performance requirementsDatabase management systemsKnowledge representationData miningOperations research
This invention provides a method and apparatus for partitioning a semantic rule network based on a municipal social governance database, comprising: acquiring first performance index data of a target processor and a first amount of data to be processed in the target semantic rule network; generating a network partitioning instruction when the first performance index data and the first amount of data to be processed meet a first preset condition; in response to the network partitioning instruction, acquiring a second amount of data to be processed in each subnet of the target semantic rule network and second performance index data of the subprocessor corresponding to each subnet; and generating a network partitioning strategy based on the relationship between the second performance index data and the second amount of data to be processed, wherein the network partitioning strategy is used to partition each subnet. This invention partitions subnets according to a preset partitioning method based on the comparison results of performance index data and the amount of data to be processed, providing a feasible method for partitioning semantic rule networks for municipal social governance.
Owner:TSINGHUA UNIVERSITY
A continuous stator winding for an electric motor, a stator, and an electric motor.
This utility model provides a continuous stator winding, a stator, and a motor, including a multi-phase winding. Each phase winding includes multiple branch windings arranged in parallel. Each branch winding has a continuous winding structure. The multiple branch windings are arranged in multiple groups. The multiple branch windings in each group are arranged adjacent to each other. The corresponding ends of two adjacent groups of branch windings are located in adjacent magnetic poles. In each slot of the stator core, multiple layers are arranged along the radial direction of the stator core. Each group of branch windings is arranged sequentially in each layer along the radial direction of the stator core. In each layer, they are arranged sequentially in the corresponding slots of each magnetic pole along the circumferential direction of the stator core. In each layer, adjacent groups of branch windings have at least one crossing position. At the crossing position, the adjacent groups of branch windings are swapped, without connecting solder joints. The axial length of the stator core is reduced, resulting in high reliability and lower material costs.
Owner:BORGWARNER POWERDRIVE SYST (TIANJIN) CO CHINA
A battery seal cover assembly and a method of manufacturing the same
ActiveCN118754426BSimple structureHigh coefficient of thermal expansionGlass shaping apparatusCell component detailsThermal dilatationMetallic aluminum
This invention relates to a battery sealing cap assembly and its preparation method, characterized in that: (1) glass mixture a and mixture b are melted in a high-temperature furnace to obtain glass liquid a and glass liquid b respectively; (2) glass liquid a and glass liquid b are quenched in water, dried, ground, and sieved to obtain powder a and powder b respectively; (3) powder a and powder b are mixed with water, binder and coupling agent respectively to form a slurry, granulated into balls, and sieved to obtain glass powder a and glass powder b; (4) glass powder a and glass powder b are shaped to obtain green blank a and green blank b, and after complete glue removal at room temperature to 300°C, the temperature is raised to 370 to 500°C and kept warm to form sealing glass blank I and sealing glass blank II; (5) the metal aluminum shell to be sealed, copper core column and sealing glass blank I and sealing glass blank II are assembled together to form a component to be sealed, and sealed at 490 to 540°C and annealed. Advantages of this invention: The sealing glass prepared has a coefficient of thermal expansion > 160 × 10⁻⁶ at 300°C. ‑7 / ℃, water resistance rating of level 3 or above, sealing temperature <550℃.
Owner:CNBM RESEARCH INSTITUTE FOR ADVANCED GLASS MATERIALS GROUP CO LTD
A bimetallic saw blade and a method of manufacturing the same
PendingCN122252700Ameet performance requirementsavoid excess performanceMetal sawing tool makingFurnace typesManufactured materialIndustrial engineering
The application discloses a bimetal saw blade and a preparation method thereof, and belongs to the technical field of special steel production. The preparation method comprises the following steps: smelting, rolling, cold rolling and saw blade manufacturing of the raw materials in a designed proportion. In the process, by controlling the composition of the raw materials, controlling rolling and cooling in the hot rolling process, preparing the structure in the cold rolling process and the heat treatment process in the saw blade manufacturing process, the bimetal saw blade can be obtained under the condition of using only 50-60% of the alloy cost, and the service life of the bimetal saw blade can reach more than 80% of the service life of the X32 high alloy steel. For specific use environment, the performance requirements can be met by using the product, and performance excess can be effectively avoided. In addition, by optimizing the composition, controlling the hot rolling process, the cold rolling process and the heat treatment process, the purpose of achieving a relatively high service life under the condition of low alloy cost is realized without additional processes and equipment, and the raw material cost and the manufacturing cost are effectively reduced.
Owner:NANJING IRON & STEEL CO LTD
An ultra-wide antenna reflector plate
ActiveCN116565577Bmeet performance requirementsReduce the difficulty of productionHigh level techniquesAntennasMechanical engineeringOptics
Owner:MOBILE ANTENNA TECH SHENZHEN +5
A thermosetting resin composition, a resin adhesive film and applications thereof
ActiveCN119490631BExcellent dielectric propertiesGood dielectric stabilitySynthetic resin layered productsCircuit susbtrate materialsPolymer scienceMeth-
The application provides a thermosetting resin composition, a resin adhesive film and application thereof. The thermosetting resin composition comprises the following components in parts by mass: 5-95 parts of a benzocyclobutene resin, 5-95 parts of a component containing a C=C unsaturated bond, 5-300 parts of a modified filler, and 0.1-10 parts of an initiator. The modified filler is an inorganic filler treated on the surface by using an unsaturated group-containing coupling agent, wherein the unsaturated group is selected from any one or a combination of at least two of a styryl group, an acryloxy group, a methacryloxy group and a polybutadiene group. The resin adhesive film prepared from the thermosetting resin composition has excellent dielectric properties, low dielectric loss tangent Df, good dielectric stability, small change range of △Df (10 GHz) after HAST, high chemical copper bonding capacity, and can fully meet the performance requirements of high-frequency high-speed printed circuit boards prepared by a semi-additive method or an additive method.
Owner:GUANGDONG SHENGYI SCI TECH