81results 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 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 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 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 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 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 a hastelloy forge piece and a preparation method thereof, and belongs to the technical field of hastelloy forge pieces. The method comprises the following steps: under a first set condition, carrying out destressing treatment on a red rotating cast ingot with set chemical components; carrying out homogenization treatment on the cast ingot subjected to the destressing treatment; carrying out forging treatment on the homogenized cast ingot for multiple times to obtain a forge piece; and under a second set condition, the forge piece is subjected to heat treatment, so that heat distribution of the forging area of the forge piece is uniform, and the hastelloy forge piece is obtained. According to the embodiment of the invention, under the synergistic effect of destressing treatment, homogenization treatment, forging and heat treatment after forging, the thermal stress and element segregation of the cast ingot are reduced, a precipitated phase is redissolved to the maximum extent, grain recovery and recrystallization are promoted, the machining deformation resistance is reduced, the structure is refined, and the plasticity of the hastelloy forge piece is improved.

The invention discloses an electromagnetic auxiliary pressurization aluminum alloy lost foam casting forming device and method.The device comprises an electromagnetic pressurization module and a lifting device module, a liftable electromagnetic coil is placed outside a sand box, during pouring, three-phase alternating current is supplied to the electromagnetic coil, a coil winding generates a traveling wave magnetic field, and the electromagnetic pressurization module is connected with the lifting device module; molten aluminum generates induced current under the action of a traveling wave magnetic field, the electrified molten aluminum cuts magnetic induction lines in the pouring process to generate downward constant magnetic field force, flowing of aluminum alloy melt micelles in a cavity is greatly promoted, mold filling power is improved, the pouring speed is increased, mold filling is complete, the structure is refined and compact, pouring defects are greatly reduced, and the mechanical property of a casting is improved. After pouring is completed, the electromagnetic pressurization module is lifted under the action of the lifting device module, the sand box is transferred to a sand shakeout area for next technological operation, and the working efficiency is improved; the invention further provides an electromagnetic auxiliary pressurizing aluminum alloy lost foam casting forming method so as to reduce the casting defects of aluminum alloy castings and improve the mechanical property of the castings.

This invention provides a method for preparing titanium anode substrates for electrolytic copper foil. The specific steps are: Step 1, preparing titanium anode substrate ingots through two melting processes; Step 2, forging the prepared titanium anode substrate; Step 3, rolling the forged titanium anode substrate. The specific effects of this invention are: the titanium anode substrate prepared by the above method for preparing titanium anode substrates for electrolytic copper foil exhibits significantly improved microstructure and properties, and the enhanced lifespan of titanium anodes produced using this process is significantly increased. This process is relatively simple to operate, requires minimal equipment, and reduces the production cost of titanium anode substrates. It also increases the practical application and operability of this process.

The present invention relates to the field of wireless communication technology, and in particular to a wireless communication method, system and semiconductor device. The method comprises the following steps: obtaining a wireless communication channel set between user devices and performing real-time monitoring of device communication requirements and channel conditions to obtain device wireless communication requirements and wireless communication channel conditions for each wireless communication channel between user devices; performing channel grouping processing and wireless communication spectrum perception analysis on the wireless communication channel set between user devices to obtain spectrum usage channels for each group of user device wireless communication channels; summarizing and analyzing network loads and interference levels of wireless communication channel subgroups between user devices, and performing dynamic spectrum resource allocation optimization processing, while performing user communication optimization processing on corresponding wireless communication channel subgroups to obtain wireless communication optimization results between user devices. The present invention can achieve higher data transmission rates and signal stability.

The invention discloses a method for improving the structure and performance of a 6063 aluminum alloy formed through selective laser melting, and belongs to the technical field of selective laser melting. Titanium powder and zirconium hydride in a certain proportion are selected as doping agents, the doping agents are evenly mixed with 6063 aluminum alloy powder through a ball milling method, and then drying and dehumidification are conducted; and the mixed alloy powder is put into selected-area laser melting equipment, manufacturing is carried out on the surface of a base material under inert gas protection, and the 6063 aluminum alloy is obtained after laser, scanning, powder laying and deposition. According to the method, the microstructure and the mechanical property of the selective laser melting forming 6063 aluminum alloy are obviously improved, so that the selective laser melting forming 6063 aluminum alloy meets the industrial performance requirement of SLM, and good market competitiveness is achieved.

A high-alloy steel electroslag ingot and its homogenization method are provided, comprising the following steps: S1, electroslag ingot pretreatment: removing surface oxide scale and crack defects, and grinding to a surface roughness Ra≤6.3μm; S2, staged heating: heating to 800-900℃ at a rate ≤100℃ / h and holding for 2-6h; heating to 1000-1100℃ at a rate ≤100℃ / h and holding for 2-6h; heating to 1200-1300℃ at a rate ≤150℃ / h and holding for 10h. -20h; S3, Stepped cooling: Turn off the heating device and cool with the furnace to 800-1000℃, hold for 2-6h; cool to 500-650℃ at a rate of ≤50℃ / h, hold for 2-6h; open the furnace door and introduce cooling air at a speed of 0.5-3m / s to cool to room temperature, obtaining homogenized high-alloy steel electroslag ingots; S4, Post-homogenization testing: the relative standard deviation of each alloying element is ≤5%; the average grain size is ≤10μm; the Brinell hardness fluctuation range is ≤15HBW. This invention eliminates component segregation, refines grain structure, optimizes process parameters, is highly efficient and energy-saving, easy to promote, and has strong practicality.

The invention discloses a high-silicon aluminum alloy ingot rapid cooling forming die and technology, and relates to the technical field of forming dies, the high-silicon aluminum alloy ingot rapid cooling forming die comprises an inner die, and the inner die is provided with a containing groove; the outer mold sleeves the outer peripheral side of the inner mold in an up-down sliding manner, a plurality of cooling grooves are formed in the outer peripheral side wall of the outer mold, the cooling grooves are vertically and adjacently arranged, the vertically adjacent cooling grooves communicate with one another, and the groove widths of the cooling grooves are gradually reduced from top to bottom; the supporting frame is used for supporting the outer mold; the lifting piece is arranged on the supporting frame, and the lifting piece controls the inner mold to slide up and down; the temperature sensor is arranged at the position, close to the bottom, of the outer mold, and the temperature sensor senses the temperature of the outer wall of the inner mold; and the controller is arranged on the supporting frame, and the controller is electrically connected with the temperature sensor and the lifting piece. The cooling speed of aluminum ingots in the aluminum ingot mold can be increased.

The present invention relates to the technical field of marketing strategy analysis, and in particular to a method and system for processing marketing data. The method comprises the following steps: obtaining a target platform marketing data set and performing data format division and caching processing and format unified conversion processing to obtain a target platform marketing standardized format data set; performing user browsing behavior analysis on the target platform marketing standardized format data set to obtain target platform marketing user browsing behavior data; obtaining marketing products in the user browsing behavior process through the target platform marketing user browsing behavior data to perform browsing interest screening processing to obtain a target platform user browsing interest product set; performing advertising browsing division processing and advertising marketing analysis on the target platform marketing user browsing behavior data, and performing marketing strategy analysis to generate a target platform product marketing strategy to execute corresponding target platform product personalized marketing activities. The present invention can provide more accurate and effective marketing strategy support.

The utility model relates to the field of electronic equipment, in particular to a variable channel type heat dissipation cold plate which comprises an end cover and a heat dissipation cavity which jointly form a three-section type heat dissipation channel. The heat dissipation channel sequentially comprises a first heat dissipation channel section with the large width, a second heat dissipation channel section with the large width and a third heat dissipation channel section with the small width in the flow direction of cooling airflow. The first heat dissipation channel section is provided with a plurality of large-diameter hollow heat dissipation columns which are filled with phase change materials, the third heat dissipation channel section is provided with small-diameter solid heat dissipation columns which are densely arranged, and airflow transition is achieved between the first heat dissipation channel section and the third heat dissipation channel section through a flow guide plate of the second heat dissipation channel section; through the design of the differentiated heat dissipation columns, large-flow rapid heat dissipation is achieved in the first channel section, and the turbulence effect is enhanced in the third channel section; the heat dissipation efficiency and the temperature uniformity are remarkably improved by combining the transient heat absorption characteristics of the heat conduction boss in direct contact with a heat source and the phase change material; the structure is compact, and is especially suitable for heat dissipation requirements of high-power-density electronic equipment.

The application discloses a creep-resistant die-casting rare earth magnesium alloy with high strength and high fluidity, and a preparation method and application thereof. The application belongs to the field of die-casting magnesium alloys. The magnesium alloy comprises, in percentage by mass, Al: 4.8-7.2%, La: 3.0-4.2%, Sm: 1.2-2.0%, Y: 0.4-1.2%, Mn: 0.1-0.6%, Te: 0.01-0.1%, Bi: 0.01-0.5%, and the balance of Mg and inevitable impurity elements. The application significantly refines the structure of the magnesium alloy by optimizing the alloy composition, changes the composition, distribution and morphology of intermetallic compounds in the alloy, simultaneously generates Al-Te phases stable at high temperatures, improves the mechanical properties and creep resistance of the magnesium alloy, and further improves the die-casting fluidity of the magnesium alloy, so as to meet the requirements of large-scale integrated design automobile parts.

The utility model provides an extensible type storage support which comprises bottom frame assemblies and storage frame assemblies, each bottom frame assembly comprises a bottom plate, a supporting rod, a supporting foot and a corner fixing plate, the bottom frame assemblies are multiple in number and identical in structure, and a rubber pad is connected to the upper side surface of each bottom plate in a glued mode. Compared with the prior art, the utility model has the following beneficial effects: by arranging the underframe assemblies, a user can flexibly increase or decrease the number of the underframe assemblies according to actual requirements so as to adapt to different numbers of printer axes, so that the user can conveniently expand through the underframe assemblies which are clamped one by one so as to meet the possibly increased storage requirements in the future; through the arrangement of the storage rack assembly, high-density storage can be achieved in a limited space, the space utilization rate is increased, meanwhile, each shaft bracket can be used for storing axes of specific types or sizes, classification and organization are facilitated, and the management efficiency is improved.

The application provides a preparation method of high-purity low-alloy ultrahigh-strength steel rods, and adopts LF refining+RH circulation degassing+vacuum consumable smelting double synergistic smelting process, cooperates with accurate optimization of full-process chain parameters and multi-pass forging-heat treatment synergistic process, realizes synergistic control of gas removal and inclusion floating of the molten steel through design of the molten steel circulation parameters of RH degassing and the molten pool convection parameters of vacuum consumable remelting, refines the grains and optimizes the structure, and prepares the 300M steel rod with high purity and excellent strength-toughness matching, so that the tensile strength is maintained at 1930-2070 MPa, and the fracture toughness breaks through the technical bottleneck that the purity and the mechanical properties are difficult to be considered at the same time in the traditional process.

The present invention provides a welding rod for hot forging die repair, and a preparation method and use thereof, and specifically relates to the field of welding materials. The welding rod for hot forging die repair includes a welding core and a coating, and the coating includes the following components and the weight proportions of each component are: 20-30 parts of marble, 10-15 parts of fluorite, 1-3 parts of ferrosilicon, 2-5 parts of ferrotitanium, 25-35 parts of rutile, 2-5 parts of feldspar, 0.8-1.5 parts of ferrovanadium, 2-4 parts of medium carbon ferromanganese, 1.5-2.5 parts of graphite, and 0.5-1 parts of sodium carboxymethyl cellulose; in terms of the mass percentage of the welding core, the welding core includes the following components and the content of each component is: cobalt content is 90-95wt%, iron content is 4-8wt%, and manganese content is 1-2wt%. The welding rod for hot forging die repair of the present application has good welding processability, and the deposited metal not only has good hardness, wear resistance and crack resistance, but also has uniform and stable hardness of the deposited metal.

The present application relates to a kind of low-carbon low-alloy welding wire and its preparation and welding method, belong to welding material technical field, solve the existing welding wire for high-strength material welding when easily produce hot crack, pore, coarse grain and other defects and weld metal's strength and low temperature toughness is insufficient, with the problems such as poor performance matching of base material.The present application provides a kind of low-carbon low-alloy welding wire, the component in the welding wire is as follows according to mass percentage: C 0.04~0.08%, Si 0.30~0.50%, Mn 1.6~2.0%, Cr 0.15~0.35%, Ni 3.5~4.0%, Cu 0.008~0.01%, Mo 0.007~0.01%, V 0.0005~0.001%, Ti 0.02~0.07%, Al 0.01~0.018%.The welding wire is designed by component, significantly improve the mechanical properties and low temperature toughness of welded joint, especially suitable for the welding of P690QL2 steel;Combined with the welding method of use, welding performance is better.

The application relates to the field of metal materials and discloses a 2.2GPa-grade grinding steel rod and a preparation method thereof. The steel rod is composed of C: 0.45%-0.55%, Mn: 4.5%-5.5%, Cr: 0.45%-0.55%, Mo: 0.15%-0.25%, Si: 0.45%-0.55%, V: 0.025%-0.035% and the like. The preparation method of the steel rod is a one-heat forming rolling process, and square hole, oval hole and round hole progressive rolling is adopted in finish rolling. The one-heat forming rolling process adopts medium-carbon high-manganese component design, improves the plasticity and toughness matching property of the matrix, reduces the full austenitizing temperature of the steel grade due to high Mn, provides an ample deformation time window for the one-heat forming, avoids grain coarsening defects caused by multiple high-temperature heating and the like, and makes the three-stage hole type act in sequence, so that the rolled piece experiences complex stress in the direction alternation, a larger cumulative strain is obtained, and the grain structure is refined.

The present application relates to the technical field of surface strengthening in water conservancy and power industry, and particularly relates to a kind of water turbine surface coating on-line fast maintenance of cavitation erosion resistant wire and on-line fast maintenance method based on it.The present application is specially made of nickel-chromium band coated high-tungsten flux-cored wire, and the main components of the wire are W, Cr, Si, B, Mn, Nb and the balance of Ni, which can be adapted to handheld laser welding machine operation.The supporting maintenance method is carried out in sequence, including failure layer polishing and shaping, cleaning and impurity removal, 150-250 DEG C preheating pretreatment, then using handheld laser welding machine with the wire, through limiting laser power, welding speed, wire feeding speed and overlap amount parameters, layer-by-layer cladding repair, finally through heat preservation and slow cooling, surface polishing and shaping to complete the maintenance.The present application can realize on-line in-situ fast repair of water turbine component cavitation erosion damage, and the cladding layer has dense structure, high bonding strength, excellent cavitation erosion and wear resistance, effectively solves the problem of low repair efficiency and on-site maintenance in prior art, and is suitable for on-site maintenance of hydroelectric equipment.

The present invention discloses a laser deposition manufacturing method for a large wing frame beam combined with topology optimization, which belongs to the field of laser additive manufacturing. The method comprises the following steps: based on the aerodynamic load and fatigue life characteristics of the wing frame beam, the wing frame beam is topologically optimized to obtain an output frame structure; the output frame structure is divided into parts to obtain a main body and a sub-body; the main body and the sub-body are scanned based on a variety of scanning methods to obtain a manufactured main body and sub-body; the manufactured main body and the sub-body are connected by laser additive according to the positional relationship to obtain an integral wing frame beam. The present invention solves the problems of heavy wing frame beams and complex structures, has the effects of structural optimization, lightweight and integration, and improves product quality and production efficiency.

The invention belongs to the technical field of metal-based composite materials, and relates to a preparation method of zirconium dioxide dispersion strengthened copper alloy, which comprises the following steps of: 1, smelting copper into molten copper; 2, molten copper is poured into a tundish, and nanoscale zirconium dioxide powder is placed in the sealed tundish; 3, atomizing molten copper and nanoscale zirconium dioxide powder, and spraying the atomized molten copper and nanoscale zirconium dioxide powder onto a deposition disc to form a blank; and 4, the blank is subjected to hot extrusion and cold drawing, and a finished product is prepared. According to the preparation method, liquid metal atomization and ZrO2 powder atomization are uniformly combined by adopting a spray forming method, so that a blank with a rapid solidification structure characteristic is prepared; the method has the characteristics of near net shape forming, structure refinement, short technological process, low cost, high deposition efficiency, high alloy component and the like, and solves the technical problems that oxide dispersion distribution is not uniform, dispersed phase grains are large in size and easy to agglomerate, the production process is complex, the production cost is relatively high, large blanks cannot be prepared, and the shapes and sizes of the blanks are limited.

The application discloses a forming method and device for thick-wall corrosion-resistant alloy pipe with yield strength of 100 steel grade, which comprises the following steps: smelting an electroslag ingot by an electric arc furnace and electroslag remelting; taking scrap steel and alloy as raw materials, smelting an electrode billet by EAF+AOD+LF+VD, and then smelting the electroslag ingot by electroslag remelting. The forming method and device for thick-wall corrosion-resistant alloy pipe with yield strength of 100 steel grade adopts the process route of combining optimized components, electroslag ingot, hot expanding, hot extrusion and cold working to produce thick-wall corrosion-resistant alloy seamless pipe, so that the purity of the alloy is improved, the grain is refined, the solid solution treatment of the strong cold process optimizes the organization and straightness, and the hot expanding and hot extrusion improve the surface quality and the qualified rate of the hollow pipe. The thick-wall corrosion-resistant alloy seamless pipe with yield strength of 100 steel grade produced by the application has high size precision, good surface quality, small internal grain, stable mechanical properties, high strength and high toughness and good corrosion resistance.

The utility model discloses a hair curler with a far infrared function, which comprises an air nozzle, the air nozzle is provided with a main body and a curly hair shaping pipe, the main body is embedded in the curly hair shaping pipe, and the main body is provided with an air inlet channel, a first air inlet communicated with the air inlet channel and a first air outlet communicated with the air inlet channel. A PCB (Printed Circuit Board) and a far infrared lamp assembled on the PCB are embedded in the main body, the curly hair shaping pipe is provided with a second air outlet communicated with the first air outlet and a slotted hole used for transmitting light, and far infrared light emitted by the far infrared lamp is emitted from the slotted hole of the curly hair shaping pipe. According to the hair curler, the curly hair shaping pipe is matched with the main body for use, so that hair is attached to the curly hair shaping pipe under the guide action of hot air to realize hair curling, the far infrared lamp is additionally arranged on the main body, and far infrared light emitted by the far infrared lamp is emitted from the slotted hole of the curly hair shaping pipe to act on the hair of a user, so that the hair curling effect is improved. Blood circulation is promoted, hair tissue is improved, and meanwhile the effects of curling and hairdressing are achieved.

The invention relates to the technical field of target materials, in particular to a high-stability tungsten oxide target material for intelligent dimming glass and a preparation method of the high-stability tungsten oxide target material for the intelligent dimming glass. The modified element is at least one of Nb, Ta and Sn; the doping amount of the modified element is 0.5%-5% of the mass of the tungsten oxide matrix. The doping elements (such as Nb < 5 + > and Sn < 4 + >) are similar to W < 6 + > in radius, a stable solid solution is formed, lattice distortion in the ion circulation process is inhibited, microcracks are reduced, and conductivity is enhanced.

This invention discloses a high-elongation cast Al-Cu-Zn-Mg alloy with good resistance to hot cracking. The alloy composition, by mass percentage, includes: Cu 3.5–4.5%, Mg 0.4–1.5%, Mn 0.2–0.5%, Ti 0.10–0.2%, Zn 2.5–3.5%, with the balance being Al and unavoidable impurity elements. Addressing the limitations of existing Al-Cu casting alloys, such as wide solidification temperature range, poor fluidity, and hot cracking, this invention provides a high-Zn-content Al-Cu-Zn-Mg alloy with good resistance to hot cracking. This alloy has a low melting point, a narrowed solidification temperature range, and excellent resistance to hot cracking and mechanical properties. It can be used for various high-strength cast aluminum alloy structural parts, effectively avoiding casting defects such as hot cracking, shrinkage cavities, and porosity, and significantly improving the overall mechanical properties of the alloy.