362results about How to "Improve organization" patented technology

The invention discloses a surveying and mapping geographic information data management method and system based on cloud computing, and relates to the field of geographic information, and the method comprises the steps: constructing a semantic segmentation model based on a convolutional neural network Deep Lab, and carrying out the feature extraction and semantic annotation of a surveying and mapping geographic data set through the semantic segmentation model, and obtaining a geographic element set; performing spatial division and indexing on the geographic element set by adopting an R tree spatial indexing method to obtain a hierarchically organized geographic element tree; constructing a graph neural network model based on a graph convolutional network GCN, and performing topological relation modeling on the geographic element tree by using the graph neural network model to obtain a time-space attribute graph containing geographic semantics and topological relations; and constructing a space-time prediction sequence model based on the space-time diagram neural network STGCN, and performing evolution trend prediction on the space-time attribute diagram by adopting the space-time prediction sequence model. Aiming at the problem that dynamic prediction of geographic elements is difficult to realize in the prior art, the spatial-temporal evolution trend of the geographic elements is predicted, and dynamic prediction is realized.

The invention discloses a data analysis method and system and a storage medium, and is applied to the field of natural language processing. The method comprises the steps of obtaining a natural language input by a user; constructing a semantic data model for converting the natural language into a semantic query statement; combining the semantic data model with a user-defined rule to construct a semantic parser; inputting the natural language into the semantic parser for parsing to obtain a semantic query statement; inputting the semantic query statement into a semantic corrector for correction to obtain a target semantic query statement; converting the target semantic query statement into a structured query statement through a semantic translator; and inputting the structured query statement into the database for query to obtain a query result.

The invention discloses a preparation method of a high-toughness corrosion-resistant titanium alloy pipe, which comprises the following steps of: 1, sequentially carrying out multi-heating forging deformation and one-time precision forging deformation on a titanium alloy cast ingot to obtain a titanium alloy bar blank; 2, machining the titanium alloy bar blank into an extrusion blank, and carrying out sheath extrusion to obtain an extrusion pipe blank; and thirdly, the extruded pipe blank is subjected to heat treatment, and the high-toughness corrosion-resistant titanium alloy pipe is obtained. According to the method, the titanium alloy cast ingot is prepared into the bar blank through the efficient fine grain forging and precision forging method, then the titanium alloy extrusion blank is machined, the pipe blank is prepared through extrusion, and finally the titanium alloy pipe is obtained through heat treatment, so that it is effectively guaranteed that the titanium alloy pipe has the excellent structure and performance, and the requirements for high toughness and corrosion resistance of the oil and gas exploration service environment are met; and the technological process is simple, and the cost is low.

The invention relates to the technical field of titanium alloy machining, and particularly discloses a forging method for improving the macrostructure uniformity of a TC2 titanium alloy large-specification bar, which is realized through cogging forging, twice alpha + beta phase region remelting dynamic beta recrystallization forging, two-phase region upsetting and drawing forging and two-phase region drawing forging. The TC2 titanium alloy bar with the specification of phi 300-phi 400 mm prepared through the method is fine and uniform in macrostructure and meets the 1-5 grade of a macroscopic rating chart in the product standard, and the structure of a ring forge piece subjected to die forging through the bar is greatly improved and meets the standard requirement.

The invention discloses a method for rolling a TA21 titanium alloy sheet. The method comprises the following steps: 1, coating the surface of a TA21 titanium alloy plate blank with an anti-oxidation coating; 2, rolling for the first heating number; 3, cutting treatment; 4, rolling for the second heating number; and 5, cutting. 6, quenching treatment; 7, rolling for the third heating number; 8, cutting treatment; 9, annealing the semi-finished product; 10, cold rolling; and 11, annealing a finished product. According to the method, first two-heating-number rolling is carried out in a two-phase region, coarse beta grains are formed in combination with quenching and heat preservation, a long-strip-shaped alpha phase is separated out from a coarse beta phase through rapid water cooling to form a needle-shaped widmannstatten structure, then one-heating-number reversing large-deformation rolling and cold rolling are carried out in the two-phase region, a large number of structures are crushed and refined, the needle-shaped widmannstatten structure is spheroidized, and the needle-shaped widmannstatten structure is obtained. The TA21 titanium alloy thin plate with fine and uniform tissue is obtained, the plate blank is fully utilized, and the production efficiency is greatly improved.

The invention relates to a heat treatment method for additive manufacturing of a nickel-based superalloy, and relates to the technical field of additive manufacturing. The heat treatment method comprises the following steps that the additive manufacturing nickel-based superalloy is placed at the first temperature, and first-step stress relief annealing treatment is carried out; and then the temperature is increased to a second temperature for second-step stress relief annealing treatment, and after cooling, the additive manufacturing nickel-based high-temperature alloy subjected to stress relief annealing treatment is obtained. The first temperature is 850-890 DEG C, and the second temperature is 900-950 DEG C; carrying out solution treatment on the additive manufacturing nickel-based superalloy subjected to the stress relief annealing treatment to obtain the additive manufacturing nickel-based superalloy subjected to the solution treatment; and aging treatment is conducted on the additive manufacturing nickel-based superalloy obtained after solution treatment, and the additive manufacturing nickel-based superalloy obtained after heat treatment is obtained. The method is mainly used for improving the volume fraction of the gamma'phase of the additive manufacturing nickel-based superalloy, obtaining the gamma 'phase with high cubic degree and proper size, and eliminating cracking and recrystallization caused by residual stress.

The invention discloses a method for generating a three-dimensional building GLTF file based on index compression. The method comprises the following steps: S1, collecting three-dimensional coordinate data of a building; s2, grouping and classifying the data according to floors to form a classification index structure based on a hash table; s3, selecting a reference model and recording Mesh data and vertex coordinates of the reference model; s4, calculating a translation matrix T of the polyhedral structure, and performing coordinate transformation; s5, generating Mesh data of other polyhedrons based on index compression, and reducing redundant surface data by adopting a topology preserving surface optimization algorithm; s6, independently processing the geometric data of each floor, and generating corresponding Mesh data and Node nodes; and S7, combining all floor data to generate a complete GLTF file, and performing compression by using a dynamic Huffman coding algorithm. Through the improved index compression and dynamic Huffman coding technology, the file size is remarkably reduced, the transmission efficiency is improved, and the geometric and topological integrity of the model is ensured.

The invention discloses a preparation method of a ceramic particle reinforced high-temperature alloy wear-resistant coating of a boiler water-cooled tube. The preparation method comprises the following steps: carrying out roughening treatment on a matrix; the prepared NiCr powder and ZrB2 powder are subjected to high-energy ball milling and mixing, drying is conducted after treatment, and dried NiCr-based composite powder is obtained; niCr-based composite powder is sprayed through atmospheric plasma, and a composite coating with the thickness ranging from 200 micrometers to 300 micrometers is deposited on the roughened surface of the base body; the composite coating is subjected to remelting treatment, and a remelting coating is formed on the surface of the base body; wherein the matrix is 304 stainless steel, and the composition proportions of the NiCr powder and the ZrB2 powder are as follows: 80-99 wt% of NiCr and 1-20 wt% of ZrB2 respectively; by means of the method, the wear resistance of the coating is remarkably improved, and controllable deposition of the high-performance ceramic particle reinforced high-temperature alloy wear-resistant coating is achieved.

The invention relates to a manufacturing method of a small-caliber nickel-copper alloy seamless heat exchange tube. The manufacturing method comprises the steps that S1, a UNS N04400 round steel material is subjected to peeling, PT inspection, shearing, centering, grinding, heating, perforating, water cooling and inspection; s2, a hot-punched blank is only cleaned, and inspection is conducted after point grinding is conducted after internal and external polishing; s3, the obtained pipe blank is subjected to first-pass intermediate product cold rolling, deoiling, straightening, pipe cutting, grinding, inspecting and cleaning; s4, second-pass intermediate product cold rolling, deoiling, heat treatment, straightening, pipe cutting, grinding, inspection and cleaning are conducted; S5, finished product cold rolling is conducted; s6, deoiling a finished product; s7, heat treatment of a finished product; s8, straightening a finished product; s9, performing ultrasonic vortex treatment, water pressure treatment and pipe cutting on a finished product; and S10, finished product surface inspection, size inspection, cleaning, mark spraying and finishing procedures are carried out. The method has the advantages of high one-time inspection qualification rate, yield and dimensional precision of products, good inner and outer surface quality, stable structure performance and high practicability.

The invention discloses a manufacturing method of a UNS N06690 alloy seamless heat exchange tube, which belongs to the technical field of material processing, and comprises the following steps of: (1) performing peeling, PT inspection, shearing, centering, grinding, heating, perforating, water cooling and inspection on a round steel material; (2) carrying out acid pickling on the hot-punched blank, and then carrying out incoming material inspection and inner and outer surface grinding; (3) two-pass intermediate product cold rolling is carried out, and after cold rolling, intermediate product deoiling, intermediate product heat treatment, intermediate product straightening, intermediate product pipe cutting, acid pickling, intermediate product grinding and repairing and intermediate product inspection are carried out; (4) carrying out finished product cold rolling; (5) deoiling a finished product; (6) performing heat treatment on a finished product; (7) straightening a finished product; (8) carrying out finished product ultrasonic eddy current, water pressure and pipe cutting, sampling during pipe cutting, and carrying out physical and chemical tests; and (9) the obtained steel pipe is subjected to the procedures of finished product surface inspection, size inspection, cleaning, mark spraying and finishing and finally packaged and warehoused, and the product produced through the method is high in one-time inspection qualification rate and high in yield.

The invention discloses a preparation method of ultra-fine grain high-entropy carbide-based metal ceramic, which comprises the following steps: step 1, dispersing multi-component carbide powder or micron-sized high-entropy carbide powder in an organic solvent, adding phenolic resin and ceramic grinding balls, and carrying out ball milling; step 2, pre-sintering the dried high-entropy ceramic powder; 3, the obtained high-entropy carbide ceramic powder and metal powder are subjected to conventional ball milling, 1-3 wt% of paraffin or a rubber forming agent is added, a ball milling medium is absolute ethyl alcohol, and then the mixture is subjected to spray granulation; step 4, pressing and forming the granulated powder; and fifthly, the pressed blank is degreased and sintered, and the ultra-fine grain high-entropy carbide-based metal ceramic is obtained. The ultra-fine grain high-entropy carbide-based metal ceramic material with the bending strength superior to 2300 MPa, the fracture toughness superior to 9.5 MPa.m < 0.5 > and the Rockwell hardness superior to 92.0 HRA can be obtained, and the ultra-fine grain high-entropy carbide-based metal ceramic material can be widely applied to the fields of bearing materials, cutting tools, mold materials and the like.

The invention relates to the technical field of metal materials, and particularly provides a rare earth modified in-situ reinforced particle reinforced aluminum-based composite material and a preparation method thereof.The preparation method of the rare earth modified in-situ reinforced particle reinforced aluminum-based composite material comprises the steps that reactants and rare earth oxide are mixed, pressed into blocks and dried, and reactant blocks are obtained; the reactant blocks are added into the aluminum alloy melt for a high-temperature self-propagating reaction, in-situ reinforced particles are generated, and particle reinforced aluminum matrix composite melt is obtained; and degassing the particle reinforced aluminum matrix composite melt, and preparing the rare earth modified in-situ reinforced particle reinforced aluminum matrix composite by adopting a near liquidus casting method. According to the preparation method, micron-sized reinforced phase particles are generated in situ under the conventional casting condition by utilizing the high-temperature self-propagating reaction of a reaction system and the activity effect of rare earth elements, and the aluminum-based composite material with the fine equiaxed crystal structure is prepared.

The invention provides a scene management and intelligent recommendation method and system based on a data space, and the method comprises the steps: selecting a system function in a preset database, and carrying out the matching of a corresponding data type according to the selected system function, making a corresponding data acquisition plan according to system functions and data types; collecting data based on the formulated data collection plan and selecting a data processing model matched with the collected data according to the collected data; processing the collected data to form a feature fusion layer, and introducing an attention mechanism and an inter-channel information transmission mechanism into the selected data processing model to optimize the selected data processing model; and training the optimized data processing model to obtain an attention mechanism weight matrix, and adjusting the obtained attention weight matrix to realize personalized recommendation. The technical problem that the heterogeneous data processing and recommendation ability is insufficient in the related technology is solved.

The invention discloses a highway maintenance knowledge question and answer method and system based on multi-modal information, and belongs to the technical field of knowledge question and answer. Comprising the steps of obtaining user question data and converting the user question data into a plurality of modal feature vectors; processing the plurality of modal feature vectors through a preset multi-modal decoupling network to obtain complementarity features and consistency semantic features; on the basis of the complementarity features and the consistency semantic features, independent retrieval of all modes is carried out in a preset multi-mode knowledge base with the consistency semantic features as guidance, cross-mode association retrieval is carried out through the association degree between different modes of knowledge, and candidate knowledge of all modes is obtained; and according to the consistent semantic features, processing each modal candidate knowledge through an answer generation network to obtain a multi-modal answer. The accuracy and flexibility of answering the expressway maintenance knowledge can be improved, and the problem that the processing accuracy of the existing question and answer task containing the multi-modal expressway maintenance knowledge is not high is solved.

The invention relates to a production process of an ultrahigh-strength special-shaped barrel. The production process comprises the following steps: preparing a barrel blank according to the size; material distribution grooves are symmetrically formed in the positions, close to the two ends, of the outer side of the barrel, the sections of the material distribution grooves are triangular, the outer angle of the outer side edge of each triangle ranges from 94 degrees to 100 degrees, and the outer angle of the inner side edge of each triangle ranges from 140 degrees to 160 degrees; the local mandrel is drawn out, specifically, the heating number is 1-2, forging heating is conducted to 425-445 DEG C in each heating number, and only the part, located between the outer sides of the two material distribution grooves, of the barrel blank is drawn out; and local trestle reaming: 1-3 heating numbers, forging and heating each heating number to 425-445 DEG C, and only carrying out trestle reaming on the part of the barrel blank between the outer sides of the two material distribution grooves to drive the inner and outer diameters of flanges at the two ends of the barrel blank to grow together. According to the ultra-high-strength special-shaped barrel production process, materials are prevented from being accumulated at flanges at the two ends of a barrel body, meanwhile, the utilization rate of the materials is increased, the utilization rate of raw materials is increased to 38% from 28%, small-specification raw materials can be selected, and the forgeability, the formability and the structure are all allowed to be greatly improved.

The invention belongs to the technical field of industrial automation, and particularly relates to an efficient thermal power plant production process control system and method. The method comprises the steps that a temperature sensor, a pressure sensor and coal consumption instrument equipment are installed to collect original key parameter data of temperature, pressure and coal consumption in real time, the original key parameter data are processed and stored, the accuracy and reliability of the data can be guaranteed, adverse effects of data missing on follow-up analysis and decision making are avoided, and the accuracy and reliability of the data are improved. A linear regression model is established to describe the technological process of the thermal power plant, guidance and support are provided for technological optimization and improvement, the technological process of the thermal power plant is described based on the linear regression model to execute an optimal control strategy, a decision tree is utilized to construct a control strategy model, the efficiency and performance of the technological process are improved, data can be organized and managed more finely, and the method is suitable for popularization and application. Key parameter data in the control system and actuator output are adjusted, a visual interface is created, and a user is allowed to control the key parameter data of the process control system.

The invention discloses a heat treatment process for relieving large-size carbides of a 17CrNiMo6 large-modulus gear. The heat treatment process comprises the following steps: a) first-time heating: heating a workpiece to a carburizing temperature in a gradient heating manner; b) heat-preservation carburizing: carburizing the workpiece by adopting multi-section pulse carbon potential; c) cooling after carburization: carrying out furnace gradient cooling on the workpiece to 660 + / -5 DEG C; d) heat preservation transformation: the workpiece is subjected to heat preservation at 660 + / -5 DEG C for a period of time, so that dispersed cementite precipitation and pearlite transformation are fully carried out; e) heating and preserving heat for the second time: heating the workpiece to 820 + / -5 DEG C, and preserving heat for austenite transformation; and f) quenching. Therefore, large-size carbides in a gear structure after heat treatment can be reduced, martensite needles in a quenched workpiece are effectively promoted to be smaller and thinner, the content of retained austenite is low, the metallographic structure of the workpiece is guaranteed, the use performance of parts is met, and the heat treatment method is particularly suitable for heat treatment of large-modulus gears.

The invention discloses a data monitoring system based on power telecontrol, which comprises a sensor module, a preprocessing module, a transmission analysis module, a data processing module, a data transmission module, a data receiving module, a data verification module, a reacquisition module and a monitoring display module, and relates to the technical field of data monitoring. According to the data monitoring system based on power telecontrol, through an intelligent transmission analysis mode, unnecessary data transmission is avoided, network resources are saved, only operation data exceeding the standard fluctuation difference are transmitted, the data transmission amount is greatly reduced, the communication cost and the system burden are reduced, and the transmission efficiency is improved; different attribute operation parameters of a plurality of time nodes in a specified period are preprocessed, an accurate fluctuation interval and a standard fluctuation difference are calculated, the operation condition of a controlled station can be reflected more accurately, and the accuracy and reliability of data processing are ensured based on scientific variance calculation and comparison.

The invention discloses a preparation method of a TC4ELI ultralow-temperature titanium alloy plate for spaceflight, and belongs to the technical field of titanium alloy material preparation. The invention discloses a preparation method of a TC4ELI ultralow-temperature titanium alloy plate for spaceflight. The preparation method comprises the following steps: step 1, selecting a finished cast ingot which is smelted for at least three times and has the diameter specification of phi 720-840 * L; 2, the finished cast ingot is subjected to at least three-heating-number forging treatment, and a finished plate blank is manufactured; 3, the finished plate blank is subjected to at least three-heating-number hot rolling treatment, and a semi-finished plate is manufactured; 4, the semi-finished plate is annealed and polished, and a finished plate is manufactured; step 5, carrying out temperature and flaw detection on the finished plate; according to the ultra-low-temperature TC4ELI titanium alloy plate and the preparation method thereof, by controlling multi-heating-number forging and rolling process parameters, the plate has good tissue and performance, the strength and the toughness are improved, work hardening and residual stress are effectively eliminated through reasonable annealing treatment, the room-temperature plasticity and the ultra-low-temperature toughness of the plate are improved, and the preparation technology of the ultra-low-temperature TC4ELI titanium alloy plate for spaceflight is perfected.

The invention relates to a method for improving the strength and plasticity of an additive manufacturing titanium alloy through Si. The method comprises the following steps: (1) mixing silicon source powder and titanium source powder to obtain mixed powder; (2) taking ball-milling mixing as an example: carrying out ball-milling mixing on the prepared mixed powder under the protection of argon; and (3) the mixed powder obtained after ball milling is subjected to a forming process, and a titanium alloy block is obtained. The forming process is additive manufacturing and comprises a direct laser deposition technology, a laser powder bed melting technology and the like. According to the method, the strength and plasticity of the titanium alloy are greatly improved without heat treatment.

The invention relates to the technical field of artificial intelligence, and provides an information retrieval method and device and a medium, which can segment to-be-processed data according to a configured segmentation strategy to obtain the to-be-processed data, and improve the organization and retrieval efficiency of the data. Performing vectorization processing on the segmented data to obtain vector data, and storing the vector data into an embedded database so as to facilitate subsequent similarity retrieval; the problem optimization is performed on the information retrieval request, so that the retrieval content can be better matched, and the retrieval accuracy is improved; a target cue word is generated by utilizing similar knowledge matched in an embedded database and a pre-configured cue word template, so that the retrieval efficiency and accuracy are further improved; according to the method, the retrieval model is retrieved according to the information retrieval request, the retrieval model is utilized to respond based on the target prompt word, and flexible retrieval of the model not only optimizes the retrieval effect, but also reduces the retrieval cost.

The invention belongs to the technical field of magnesium-lithium alloy plastic processing, and particularly relates to a 400 MPa ultrahigh-strength magnesium-lithium alloy and a preparation method and application thereof. The 400 MPa ultrahigh-strength magnesium-lithium alloy consists of the following components in percentage by mass: 4.0 to 8.0 percent of Li; 4.5 to 7.5 percent of Zn; 1.3%-4.0% of RE (rare earth); 0.2 to 1.0 percent of Zr; 0.1 to 0.5 percent of Bi; and the balance of Mg. The ultrahigh-strength magnesium-lithium alloy is obtained by designing alloy components, controlling the mass ratio of Zn to Y, introducing a W phase, a quasicrystal phase, a magnesium-rare earth phase and a plurality of strong plastic phases and thermal stable phases and carrying out thermomechanical treatment. The preparation method of the ultrahigh-strength magnesium-lithium alloy mainly comprises the working procedures of high-temperature solid solution heat treatment, extrusion-hot rolling / cold rolling composite plastic deformation and the like, the tensile strength of the prepared ultrahigh-strength magnesium-lithium alloy reaches up to 400.5 MPa, the elongation is 9.4%, and a high-strength ultra-light metal structure material can be provided for the fields of aerospace, weaponry and the like; the method is applied to shells, supports, skins, cover plates and the like.

The bearing ring heat treatment process based on residual stress optimization comprises the following steps that S1, the surface of a bearing ring is cleaned, and it is ensured that the surface of the bearing ring is clean and free of oil stains and impurities; s2, sectional type heating treatment is conducted on the bearing ring, and the bearing ring is heated to the preset heat treatment temperature; s3, the bearing ring subjected to heat treatment is rapidly put into a quenching medium to be rapidly cooled; s4, the quenched bearing ring is subjected to tempering treatment; s5, the bearing ring subjected to tempering treatment is subjected to cooling treatment.The bearing ring heat treatment process can adjust stress distribution in the bearing ring, the cracking risk caused by stress concentration is reduced, generation of residual stress is reduced, release of the residual stress is promoted, the uniformity of residual stress distribution is improved, and the service life of the bearing ring is prolonged. And the residual stress can be effectively reduced, the toughness is improved, the structure is refined and the stability is improved, so that the quality and the service life of the bearing are improved.

The invention provides a continuous casting round billet as well as a preparation method and application thereof. The continuous casting round billet comprises the following components: 0.30 to 0.38 weight percent of C, 0.50 to 0.80 weight percent of Mn, 1.30 to 1.70 weight percent of Cr, 0.15 to 0.30 weight percent of Mo, 1.30 to 1.70 weight percent of Ni, 0.05 to 0.10 weight percent of Nb, 0.05 to 0.08 weight percent of V, less than or equal to 0.40 weight percent of Si, less than or equal to 0.030 weight percent of P, less than or equal to 0.030 weight percent of S and the balance of Fe. By optimizing the contents of C, Mn, Cr, Mo and Ni elements and cooperatively doping Nb and V elements with specific contents, the tensile strength, the yield strength and the impact energy at-40 DEG C (KV2) of the obtained continuous casting round billet are improved; and meanwhile, the composition segregation of the cross section is improved, and the requirements of the steel for the offshore steamship generator crankshaft are met.

The invention discloses a method for manufacturing an aluminum alloy and a composite material thereof through additional ultrasonic vibration assisted pulse current electric arc wire feeding, and belongs to the technical field of electric arc additive preparation of aluminum alloys and aluminum alloy composite materials. The technical problems that an existing aluminum alloy electric arc additive structure is thick and large, air holes are many, and the deposition quality is poor are solved. The method comprises the following steps: pre-treating a substrate and a welding wire; an ultrasonic vibration head is arranged on a base plate, ultrasonic equipment vibrates in the z-axis direction under protective gas, and meanwhile welding wires are stacked layer by layer in a certain direction on the x-y plane through electric arc wire feeding; and then solid solution treatment, water quenching and aging treatment are sequentially carried out, and the process is completed. In the printing process, the current pulse and the ultrasonic vibration are applied at the same time, the stirring effect on the molten pool is formed, dendritic crystal breaking is promoted, the solidified grain structure is obviously refined, meanwhile, the defects such as air holes are reduced, and the mechanical property of the product is improved. The machining method is used for machining the large-size thin-wall cylinder part.

The present invention relates to a production method of a green low-carbon high-strength extra-thick steel plate and the extra-thick steel plate produced. First, low Pcm, low CEV, low P, S, H, Cu, Sn, Nb micro-alloying composition design is carried out, and thick casting billets are formed through molten iron pre-desulfurization treatment, converter smelting, ladle refining, RH vacuum refining and continuous casting; then, billet stacking cooling, continuous casting billet heating, three-stage rolling, straightening, water cooling and slow cooling pit stacking are carried out. The service life, core performance and assembly accuracy of the extra-thick steel plate are improved, and the influence on the steel plate structure, performance, plate shape and plate shape accuracy after steel plate cutting and processing is reduced.

The invention discloses a rolling deformation method for improving the mechanical property of a CoCrFeNiMo0.35 high-entropy alloy, through high-temperature severe plastic deformation, the structure of the CoCrFeNiMo0.35 high-entropy alloy is refined, meanwhile, as-cast sample structure defects such as air holes can be eliminated, the alloy structure is densified, and along with the increase of rolling reduction, the mechanical property of the CoCrFeNiMo0.35 high-entropy alloy is improved, so that the mechanical property of the CoCrFeNiMo0.35 high-entropy alloy is improved. And further refining of crystal grains is effectively promoted. This is the first main factor causing improvement of the mechanical property of the alloy. Besides, in the hot rolling deformation process, alloy grains are stretched into a flat shape in the rolling direction, the volume fraction of a sigma phase is increased along with increase of rolling reduction, the sigma phase is a common hard phase in the high-entropy alloy, and therefore improvement of the alloy strength can be promoted, and the strength of the alloy is improved. The room-temperature tensile engineering stress-strain curve of the CoCrFeNiMo0.35 high-entropy alloy corresponding to different rolling reduction amounts is shown in the figure 7. It can be seen that when the rolling reduction is increased from 10% to 50%, the yield strength and the tensile strength of the alloy are both obviously improved.

The invention relates to the technical field of intelligent assistants, and discloses an intelligent assistant system and an implementation method thereof, the intelligent assistant system comprises a data acquisition unit, a preprocessing unit, a data analysis unit, a knowledge graph construction unit, an intelligent interaction unit and a personalized service unit; multi-source data collection is achieved, web pages, third-party APIs and user behavior data are covered, and richness, timeliness and pertinence of information are guaranteed. Through efficient data preprocessing, the data quality is improved; text content and emotional tendency are accurately mastered through multiple technologies in text analysis; user behavior analysis deeply excavates an association relationship, constructs a portrait and analyzes a trend; the knowledge graph construction effectively organizes knowledge and improves retrieval efficiency, personalized service provides personalized experience based on user portraits and behavior analysis, user satisfaction is improved on the whole, intelligent, convenient and personalized service experience is brought to users, and the method has wide application value and market potential.

The invention relates to the technical field of logistics management, in particular to an in-transit supervision method for large-size transportation on an expressway. The method comprises the following steps: acquiring transportation speed data and transportation vibration data; carrying out transportation speed feature extraction on the transportation speed data to obtain transportation speed feature data, and carrying out transportation vibration feature extraction on the transportation vibration data to obtain transportation vibration feature data; performing feature map construction on the transportation speed feature data and the transportation vibration feature data to obtain transportation speed vibration feature map data; abrupt change feature collection and change degree extraction are carried out according to the transportation speed vibration feature map data, and transportation abrupt change feature data and transportation change degree data are obtained so as to carry out large piece transportation anomaly detection operation. According to the invention, the safety and the management level of the large-piece transportation process are effectively improved.

The invention provides a tungsten plate and a preparation method thereof, and belongs to the technical field of tungsten material processing. The preparation method of the tungsten plate comprises the following steps that a tungsten plate blank is sequentially subjected to cogging rolling, intermediate rolling and finished product rolling, and a rolled tungsten plate is obtained; the rolling pass of the finished product rolling is one, and the single-pass deformation is 40-55%; and the rolled tungsten plate is subjected to annealing treatment, and the tungsten plate is obtained. According to the preparation method, the grain size of the tungsten plate is effectively refined, meanwhile, the microstructure orientation is adjusted, and the overall structure uniformity and use performance of the tungsten plate are improved.