63results about How to "Meet performance requirements" patented technology

The invention provides a one-dimensional pneumatic design method and device for an axial flow compressor, and belongs to the field of axial flow compressor pneumatic design. The method comprises the following steps: taking values of a plurality of design variables as the state of a reinforcement learning agent; the intelligent agent outputs the adjustment amount of the design variable according to the state, and the adjustment amount serves as the action executed by the intelligent agent; applying the action to the value of the current design variable to obtain an updated design variable; utilizing a one-dimensional inverse problem design program to generate a one-dimensional pneumatic design scheme of the gas compressor; utilizing a one-dimensional normal problem analysis program to output performance indexes; constructing a reward function according to the performance indexes; based on feedback provided by the reward function, a depth deterministic strategy gradient algorithm is adopted to train the intelligent agent; and performing one-dimensional pneumatic design of the gas compressor by using the trained intelligent agent. According to the method and device provided by the invention, the problems that the one-dimensional design of the axial flow compressor depends on experience, the efficiency is low, automatic optimization is difficult and the response is slow can be solved.

The invention belongs to the technical field of high-voltage electric appliance material preparation, and particularly relates to a zinc oxide resistor disc and a preparation method and application thereof. The preparation method comprises the following steps: (1) pre-sintering zinc oxide powder; (2) mixing the zinc oxide powder obtained in the step (1), an auxiliary agent and a dispersion liquid, and carrying out ball milling to obtain slurry; the particle size D50 of the slurry is 0.8-1.2 [mu] m, and the dispersity is greater than or equal to 95%; (3) performing spray drying and granulation on the slurry to obtain granulation powder; (4) carrying out molding and first sintering on the granulated powder to obtain a resistor disc semi-finished product; the first sintering adopts sectional sintering; and (5) forming an electrode layer on at least one surface of the resistor disc semi-finished product by adopting a vacuum sputtering and / or electrophoretic deposition process, and performing secondary sintering and annealing. The contact resistance of the zinc oxide resistor disc is less than or equal to 5m omega; and after 1000 hours of aging in a 85 DEG C + 85% RH environment, the leakage current increase is less than or equal to 2 [mu] A, and the performance degradation rate is less than or equal to 5%.

The application provides an integrated aircraft refueling lamp, and belongs to the technical field of illumination design of an aircraft in-flight refueling system, and specifically comprises a shell assembly, a light source assembly, a driving assembly and a light source regulator, the shell assembly comprises a shell and first and second cavities arranged in the shell, the light source assembly is arranged in the first cavity, the driving assembly and the light source regulator are arranged in the second cavity, the light source assembly, the driving assembly and the light source regulator are sequentially connected, the light source assembly is provided with a refueling probe illumination mode and a conical sleeve floodlight illumination mode, the driving assembly is used for dividing voltage and controlling constant current, and the light source assembly is used for stabilizing input voltage when light intensity is changed. Through the processing scheme, the airborne equipment has the advantages of light weight, integration, low cost and simple control.

The invention provides a battery pack box body and a battery pack, and relates to the technical field of batteries, the battery pack box body comprises a cross beam assembly, the cross beam assembly comprises a cross beam main body and at least one first supporting beam, a plurality of cavities are formed in the cross beam main body, and inclined ribs are arranged in the cavities close to the bottom of the battery pack box body; one end of the first support beam is welded with the side wall of the cross beam main body deviating from the battery monomer to form a first welding seam and a second welding seam, the first welding seam extends along the second direction and is positioned at the upper part of the first support beam along the third direction, and the second welding seam extends along the third direction and is positioned at two sides of the first support beam along the second direction; the cross beam assembly has the advantages that the cross beam assembly is compact in structure, high in rigidity and relatively light in weight, and the vibration resistance of the cross beam assembly is improved.

The application provides a kind of X80 grade high toughness high hydrogen-induced cracking resistance thick wall LNG receiving station seamless steel pipe steel and its heat treatment process, composition: C 0.03%~0.06%, Mn 1.30%~1.50%, Cr 0.20%~0.50%, Mo 0.40%~0.60%, Ni 0.20%~0.40%, V 0.080%~0.150%, Nb 0.010%~0.030%, Al 0.015%~0.025%, P≤0.012%, S≤0.008%, N 0.0060%~0.0100%, T.O≤0.0020%, the rest is Fe and other inevitable impurities, cooperate heat treatment process production, with good strength and toughness and hydrogen-induced cracking resistance performance.

The application relates to the technical field of building materials, and discloses a polymer composite mortar material for a waterproof layer of a building outer wall and a preparation method of the polymer composite mortar material, wherein the waterproof layer of the building outer wall comprises, in sequence from top to bottom, an interface treatment layer, a vitrified microbead mortar leveling layer, a bottom mortar layer in which glass fiber mesh cloth is embedded, a surface mortar layer and a polymer cement waterproof layer; the material of the surface mortar layer and the bottom mortar layer is the polymer composite mortar material. Through the technical scheme, the problems of heavy load, low bonding strength, poor crack resistance and easy falling of the waterproof layer of the building outer wall in the related art are solved.

The application relates to the technical field of high polymer materials, and discloses a nylon material and a preparation method and application thereof. The nylon material comprises the following preparation raw materials in percentage by mass: 70-85% of nylon resin, 8-15% of nitrogen-based flame retardant, 2-8% of phosphorus-based flame retardant and 1-8% of synergistic flame retardant. The nylon material provided by the application adds the phosphorus-based flame retardant and the synergistic flame retardant in a traditional nitrogen-based flame retardant system, so that the ignition temperature of the material is increased, the dropping speed and the dropping ignition probability are reduced, and the flame retardant performance of the material is improved. The ignition temperature of the material can reach 745 DEG C, the DSC crystallization temperature can reach 187 DEG C, the demolding effect is good, the dropping speed is slow, the dropping ignition probability is low, the performance requirements of a battery assembly product on the material can be met, and the nylon material can be used in the preparation of electronic connectors, battery compartments, low-voltage switches, housings or terminal blocks of power distribution systems of electronic and electrical equipment.

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.

This invention relates to the field of resource utilization technology for waste soil and discloses a method for combined lithium slag and carbide slag electroosmosis reinforcement of waste soil. The method involves mixing lithium slag and carbide slag in a specific ratio with waste soil to form modified soil with low moisture content, which is then cured using an electroosmosis device to achieve rapid reinforcement and resource utilization of the waste soil.

The invention discloses a nitride ceramic particle reinforced electric vehicle battery pack bottom protection plate and a manufacturing method thereof, and belongs to the field of electric vehicle battery technology and vehicle manufacturing. According to the method, a CrMoAl steel sheet is adopted, the surface of the sheet is polished to remove the oxidation condition, nitriding process treatment is conducted in a gas nitriding furnace, a sample is taken out after the sample is cooled to the room temperature along with the furnace, and the nitride ceramic particle reinforced electric automobile battery pack bottom protection plate is obtained. Ultra-deep nitriding layers are formed on the two sides of the steel plate through nitride ceramic particle reinforcement, a non-nitriding layer is formed in the middle of the steel plate, and a nitriding layer-non-nitriding layer-nitriding layer sandwich structure is formed; due to the existence of the double-layer nitriding layer and the middle non-nitriding layer, the steel plate has high hardness and obdurability at the same time, when the steel plate is applied to the electric automobile bottom protection plate, the conditions of gravel splashing, road surface fluctuation and bumping and the like caused by the external environment can be borne, and damage to a battery pack due to the conditions of bending, breakage and the like of the steel plate can be prevented.

The utility model discloses a rear parallel type diesel engine air filter device which comprises a plurality of air filters, an outer side connecting pipe, an inner side connecting pipe and vortex exhaust gas. The air filters are horizontally arranged in parallel and arranged above the rear side of the engine body with air inlets facing backwards. The outer side connecting pipes are horizontally arranged above the two sides of an engine body, one end of one outer side connecting pipe is connected with an air outlet of one air filter located on the outer side, and the other end of the outer side connecting pipe is connected with the air inlet end of one supercharger away from one end of the air filter. The inner side connecting pipes are horizontally arranged above the inner side of an engine body in parallel, one end of one inner side connecting pipe is connected with an air outlet of the air filter located on the inner side, and the other end of the inner side connecting pipe is connected with the air inlet end of the supercharger close to one end of the air filter. And the after-vortex exhaust device is arranged between the after-vortex air outlet end of the supercharger far away from one end of the air filter and the after-vortex air outlet end of the supercharger close to one end of the air filter. Therefore, the occupation of the whole engine in the height space direction can be greatly reduced.

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.

This invention discloses a project resource recommendation method and system based on knowledge graph subgraph partitioning, relating to the fields of knowledge graph and intelligent recommendation technology. The method includes: fine-grained subgraph partitioning for three target entities: organizations, experts, and technological achievements; independently learning the representations of each subgraph using a graph attention network, and generating deep semantic representations of entities through weighted fusion via an attention mechanism, which are then cached; extracting a list of technical keywords and a requirement summary from the project requirement text using a large language model, and generating requirement text representations through vectorization and multilayer perceptron encoding; based on the relationships in the knowledge graph, using a cross-attention mechanism with the requirement text representation as the query vector, adaptively fusing the deep representations of related target entities to construct a joint representation; finally, calculating the matching degree to generate a recommendation list, and outputting interpretable recommendation reasons based on weighted weights. This invention improves the accuracy, computational efficiency, and interpretability of project resource recommendations.

The application discloses a process for preparing a metallurgical pellet binder from bentonite with low montmorillonite content. The process adopts a twice wet modification process. After the first modification, the basis is converted. In the second modification, calcium oxide and hydrolyzed polyacrylonitrile sodium salt are innovatively introduced. The calcium ion bridging effect is used to enhance the interaction force between the organic and inorganic, fill the interlayer defects of the montmorillonite, and enhance the binding network. The low-grade bentonite montmorillonite can be converted into a high-performance metallurgical pellet binder, and the performance requirements of the metallurgical pellet binder can be met, so that the efficient utilization of low-value mineral resources is realized.

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.

The present application relates to tungsten hard alloy technical field, especially to a kind of rare earth modified tungsten hard alloy and its preparation method and application.The rare earth modified tungsten hard alloy provided by the present application mainly uses cerium oxide, yttrium oxide and titanium oxide rare earth as modified component, through the preparation of special structure to modified component, so that modified component can synergistically give full play to function, improve the overall modification effect, so that the rare earth modified tungsten hard alloy provided by the present application has high hardness and high toughness.And, by controlling the specific composition and particle size of the composite rare earth particles and the rare earth modified iron powder and other parameters, the synergistic effect between the rare earths can be further improved, and the toughness can be improved under the premise of high hardness.The composite rare earth particles and the rare earth modified iron powder in the present application also have good complex effect, which helps the effective dispersion and particle size control of the overall component, thereby ensuring the balance of hardness and toughness of the rare earth modified tungsten hard alloy.

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.

The invention discloses a method and a system for realizing digital pre-distortion with limited transmitter bandwidth, and the method comprises the steps: constructing a target function of a full-band error minimization problem according to an in-band and out-of-band error weight matrix between a baseband input signal and a power amplifier (PA) output signal, and obtaining an optimal parameter of a DPD model through a Newton iteration method, and performing linearization setting on the PA to meet in-band and out-band performance requirements of an antenna end transmitting signal. According to the invention, the in-band and out-band performance requirements of a system transmitting signal can be met under the condition that the bandwidth of a transmitting low-pass filter (Tx LPF) of a broadband nonlinear transmitter is limited.

This utility model discloses a wall panel installation structure for a steel structure factory building, including multiple support columns fixed to the factory floor, with adjacent support columns connected by an installation mechanism. The installation mechanism includes multiple limiting vertical plates, and the support columns and limiting vertical plates are fixedly connected by multiple fixing bolts. Multiple partition plates are fixedly installed on the outer wall of the limiting vertical plates. This utility model achieves a stable installation foundation through the fixed connection between the support columns and limiting vertical plates. The partition plates and fitting grooves cooperate to achieve precise positioning of the protective wall panels. The fixing bolts and installation bolts enhance the connection's firmness, and the fixing pressure plate further reinforces the structure, improving the overall stability of the wall panels. Ventilation holes ensure uniform ventilation, and the orderly cooperation of all components reduces installation gaps, lowers construction difficulty, improves installation efficiency, and meets the performance requirements of steel structure factory buildings for their enclosure structures.

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.

A method for generating thermal management strategies for hybrid vehicles based on deep reinforcement learning includes the following steps: S1: Obtain vehicle information and state information of the hybrid vehicle; S2: Build a hybrid vehicle simulation model: establish a vehicle energy model; build a vehicle power model in Simulink, build a thermal management system model in GT-SUITE, and couple the vehicle power system model and the thermal management system model in Simulink to obtain the vehicle energy model; S3: Utilize deep reinforcement learning algorithms to construct a hybrid vehicle thermal management strategy, solve a multi-objective optimization problem including fuel economy, battery efficiency, and battery heat dissipation, and thus obtain the optimal thermal management strategy. This design can not only construct a vehicle energy model and simulate the temperature change process of the vehicle, but also has strong adaptability and can meet the strategy generation needs of different vehicle models.

The invention discloses an outer surface coating material of a composite material, and aims to provide a surface treatment method of a polyethersulfone modified composite material, which is convenient to prepare and suitable for low-cost large-scale preparation, and the coated material has better performance. GO coats SCF to form a coating body of the SCF, and the coating body is mixed with PES to form a multi-stage enhanced interface structure, so that the comprehensive performance of the composite material is comprehensively and remarkably improved on the whole, and GO can be massively prepared at relatively low cost, so that the finished product is easily available in raw materials, simple and convenient in process and suitable for low-cost large-scale production; and various performance detections are performed on the finished product, so that the reliability and consistency of the performance of the final product are ensured, and the method is suitable for the technical field of composite material surface treatment.

This invention discloses an AlCuMnMgSiZr heat-resistant aluminum alloy sheet containing Er, Sn, and Ag, and its preparation method. The composition of the sheet by weight percentage includes: Cu 4.0-5.6%, Mg 0.1-0.35%, Mn 0.2-0.4%, Zr 0.1-0.3%, Si 0.1-0.3%, Er 0.05-0.25%, Sn 0.05-0.20%, Ag 0.1-0.8%, with the balance being Al and unavoidable impurities. This invention utilizes multi-component composite microalloying of Er, Sn, Ag with Si, Mg, and Zr, combined with homogenization, hot rolling, solution treatment, and aging, to leverage the multi-scale synergistic strengthening and stabilizing effects of the Al3(Er,Zr) composite phase, Ω phase, and θ' phase. This results in a sheet material exhibiting high strength and excellent long-term thermal stability across a wide temperature range, from ultra-low temperatures (-196℃) to high temperatures (300℃), while also improving corrosion resistance. This sheet material is particularly suitable for critical structural components in reusable rockets, such as cryogenic storage tanks and rocket skin, which require resistance to severe thermal cycling.

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.

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.

The invention provides a process and system for co-production of binder pitch and mesophase pitch, and the process comprises the following steps: filtering a first aromatic hydrocarbon raw material to obtain an aromatic hydrocarbon raw material 1 *, and mixing the aromatic hydrocarbon raw material 1 * and a second aromatic hydrocarbon raw material to obtain mixed aromatic hydrocarbon oil; heating the mixed aromatic hydrocarbon oil, and distilling the mixed aromatic hydrocarbon oil to obtain an aromatic hydrocarbon base component; the preparation method comprises the following steps: heating an aromatic hydrocarbon base component and cross-linking gas, and carrying out a cross-linking reaction to obtain binder asphalt; the method comprises the following steps: heating the binder pitch and stripping gas, and performing variable-pressure pyrolysis to obtain intermediate-phase binder pitch; the heated mesophase binder pitch is subjected to a deep reaction, and the spinning-grade mesophase pitch is obtained. The raw materials from different sources are adopted, the binder pitch, the mesophase binder pitch and the spinning-grade mesophase pitch products which are excellent in performance and stable in quality can be prepared at the same time, and the purposes that products obtained through the same system are diversified, and the product structures can be flexibly adjusted can be achieved.

This application relates to the field of ABS material processing technology, and more specifically, to an ABS cold-resistant material and its preparation method, which is prepared from the following raw materials in parts by weight: 50-60 parts of ABS resin, 10-30 parts of SNA resin, 20-35 parts of high-rubber powder, 4-6 parts of trans-polyoctene rubber, 2.5-4 parts of hyperbranched polyesteramide, 2.5-5 parts of hydroxyl-terminated polybutadiene-acrylonitrile copolymer, 1.5-3 parts of reaction compatibilizer, 4-6 parts of poly(p-phenylene terephthalamide) short fiber, 3-5 parts of nanofiller, 1-2 parts of nucleating agent, and 0.1-2 parts of additives. The reaction compatibilizer is composed of maleic anhydride-grafted ABS and glycidyl methacrylate-grafted styrene-acrylonitrile copolymer. The ABS cold-resistant material prepared by this formula can maintain excellent impact toughness at -40℃, while having good tensile strength, flexural strength and surface hardness, and good wear resistance and scratch resistance, meeting the comprehensive performance requirements of harsh application scenarios such as automotive structural components and low-temperature logistics equipment.

The invention relates to the technical field of composite materials, in particular to a polyethylene composite material and a preparation method and application thereof. According to the invention, graphene oxide is compounded with cerium dioxide and titanium dioxide to construct an embedded carbon nanostructure, the obtained embedded carbon material not only can effectively avoid the problem that graphene oxide is easy to agglomerate, but also can enable cerium dioxide, titanium dioxide and graphene oxide to generate a synergistic effect in performance, so that each component fully plays a role, and the performance of the material is improved. The mechanical property and the high temperature resistance of the polyethylene composite material can be effectively improved. On the basis, a composite cross-linking agent is adopted, and polyethylene is efficiently cross-linked, so that on one hand, stable distribution of the embedded carbon material in the polyethylene composite material is ensured, and on the other hand, the compatibility and connectivity of the polyethylene and the embedded carbon material are improved; therefore, the polyethylene composite material provided by the invention has better compression resistance and integrity.

The invention relates to the technical field of metallurgy, and particularly discloses a production method of hot-rolled hot-formed steel based on a full endless continuous casting and rolling production line, which comprises the following steps: adjusting the contents of C, Mn, Cr, Al and B elements, carrying out continuous casting production on an upper limit steel billet which relimits the contents of P, N and S elements, and setting continuous casting process parameters; continuously-cast molten steel enters an induction heating furnace after being formed through a tundish and a crystallizer; the steel billet enters a roughing mill group of an ESP production line to be rolled and then enters a finishing mill group to be rolled; applying a hot pressing process and an electric welding process to the ESP hot-formed steel, and setting parameters; on the basis of an ESP short-process production line, the 1500Mpa-grade short-process hot forming steel is provided, the production procedures are reduced, the production cost is reduced, and the quenching forming surface quality of the hot forming steel is improved while the performance requirements of the hot forming steel for automobiles are met.