32 results about "Materials science and technology" patented technology

The invention belongs to the crossing field of artificial intelligence and material informatics, discloses a multi-layer material knowledge graph construction method and system based on a large model, and solves the problems of low utilization rate of multi-modal information, flat knowledge representation, uncontrollable quality and insufficient entity alignment precision in the prior art. The method comprises the following steps: analyzing material science and technology literatures, extracting multi-modal information of texts, tables and images, and preprocessing the multi-modal information into structured data; constructing a three-layer semantic framework of a concept term layer, a material entity layer and a material data layer; extracting knowledge by a large model layer by layer to generate a triple, and performing multi-dimensional quality evaluation and dynamic threshold filtering; entity fusion is realized by adopting hybrid alignment of semantic embedding and literal similarity and large model discrimination, and an atlas is maintained by combining incremental updating and version management. According to the method, knowledge integrity and accuracy are improved, entity heterogeneous scenes in the material field are adapted, whole-process automation is achieved, and high-quality knowledge support is provided for material research and development and data sharing.

The invention discloses construction and application of a biosensor based on an efficient antifouling interface and dual signal amplification, and belongs to the technical fields of optical / electric analytical chemistry, biosensing and material science. According to the invention, the electrode interface is modified with polyaniline doped with polytannic acid as an antifouling film, so that non-specific adsorption of interfering biomolecules in a complex medium is resisted; euTb-MOF is prepared as an efficient luminous body, Tb < 3 + > can transfer energy of Tb < 3 + > and ligand to Eu < 3 + >, and effective signal self-enhancement is realized; according to the EuTb-MOF, the reduction of S2O8 < 2-> is promoted by utilizing the reversible conversion of valence states of Co < 2 + > / Co < 3 + > and Fe < 2 + > / Fe < 3 + > and the synergistic catalysis of Ag NPs, so that the electrochemical luminescence signal of the EuTb-MOF is further improved. Based on the above strategy, the constructed biosensor has high detection sensitivity and precision and long service life, the linear range is 10 fM to 100 nM, and the detection limit is as low as 3.62 fM.

This utility model discloses an amorphous component placement device for a horizontal magnetic furnace, relating to the field of materials science and technology. The utility model includes a limiting frame, with a connecting plate slidably connected to the inner wall of the limiting frame. A placement mechanism is provided on the connecting plate, and a picking mechanism is provided on the limiting frame. The placement mechanism includes a sliding groove. By incorporating a clamping plate, and with a spring in a compressed state, the spring rebounds, pushing the sliding plate towards the placement box. Simultaneously, the sliding plate slides on a fixed rod, causing the clamping plate to move. The clamping plate then causes a slider to slide within the sliding groove. Through the clamping plate that can clamp the placement box, the placement box containing the amorphous components is fixed in position, ensuring the stability of the components within the furnace and guaranteeing the uniformity of the heating process, thereby improving the heating effect and component performance.

The invention discloses a manufacturing method for recrystallizing semiconductor material silicon carbide, belongs to the technical field of material science, and aims to solve the problems that a material'dead zone 'possibly occurs, the cost is high, the technology is complex and difficult, and the rejection rate is relatively high when silicon carbide crystals are manufactured by a silicon carbide differential high-temperature vapor deposition method. Comprising the following steps that 1, 4-5 kg of 24-mesh high-purity silicon carbide, 2-3 kg of 100-mesh high-purity silicon carbide and 1-2 kg of differential silicon carbide are selected; 2, the high-purity silicon carbide selected in the step 1 is mixed and put into an electric furnace, and 2-3 kg of 100-mesh monocrystalline silicon is laid at the bottom of the electric furnace; 3, the temperature is increased to 1100 DEG C and kept for 1 h, then the temperature is increased to 1600-2200 DEG C, and heat preservation is conducted for 24-48 h; and 4, blowing out the furnace and discharging. The method is low in cost, simple in technology and high in economic benefit.

This invention relates to the field of materials science and technology, and discloses a method for optimizing the composition of a chemical nickel plating solution for ceramic substrates. The method includes: analyzing target ratio combinations of key variables to establish an initial nickel plating solution; plating a preset ceramic substrate using the initial nickel plating solution, and recording the current pH value during the initial nickel plating process; analyzing the pH adjustment parameters of the initial nickel plating solution, marking the comprehensive lifetime score of the initial nickel plating solution under the pH adjustment parameters to determine the failure point of the initial nickel plating solution; performing nickel plating on the ceramic substrate using the initial nickel plating solution to obtain a nickel-plated ceramic substrate; identifying the critical load for plating peeling off the nickel-plated ceramic substrate to determine the adhesion of the nickel-plated ceramic substrate; analyzing the conductivity and corrosion resistance of the nickel-plated ceramic substrate; outputting the composition optimization parameters of the initial nickel plating solution; and performing composition optimization of the nickel plating solution based on the composition optimization parameters. This invention can improve the optimization effect of the nickel plating solution composition.

The invention belongs to the technical field of environmental engineering and material science, and particularly relates to a hydroxyl-containing zinc zeolite imidazole framework material as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a zinc precursor and an imidazole ligand in proportion by adopting a mechanochemical method, mechanically grinding under the assistance of a small amount of water, washing and drying. The obtained material is of a microporous structure, the specific surface area is 500-2000 m < 2 > / g, the particle size is 20 nm-50 [mu] m, and the defect rate is high. The method has the advantages that the preparation process is green, environment-friendly, rapid, efficient and suitable for mass production, and the coordination capability can be enhanced through the synergistic effect of hydroxyl and imidazole groups of the residual raw materials. The obtained material can be used for heavy metal ion adsorption, especially has high removal rate and high adsorption capacity (50-600 mg / g) for radioactive uranium elements, and has wide application prospects in the field of environmental restoration.

The invention discloses a preparation method of a high-zinc small-wall-thickness aluminum alloy profile for aviation, and belongs to the technical field of material science. Preparation: preparing a high-zinc aluminum alloy cast ingot; after two-stage homogenizing annealing, saw cutting and turning are conducted, and after heating, extrusion forming is conducted; and after two-stage solid solution quenching treatment, pre-stretching is conducted, then two-stage aging treatment is conducted, and a T76511-state profile, namely the high-zinc small-wall-thickness aluminum alloy profile for aviation, is obtained. According to the method, the two-stage homogenizing annealing and two-stage solid solution heat treatment processes are adopted, so that the structure property of the profile is more uniform and stable, and it is guaranteed that all properties of a final product meet standard requirements. The prepared high-zinc small-wall-thickness aluminum alloy profile has the advantages of being high in strength, good in corrosion resistance, resistant to corrosion and the like, the average tensile strength of the high-zinc small-wall-thickness aluminum alloy profile is 635 MPa which is 21 MPa higher than the product standard requirement, the average yield strength of the high-zinc small-wall-thickness aluminum alloy profile can reach 610 MPa which is 24 MPa higher than the product standard requirement, the requirement of amphibious aircrafts of special models for high-performance aluminum alloy materials is met, and the high-zinc small-wall-thickness aluminum alloy profile can be widely applied to the field of aerospace.

The invention discloses a method for improving anti-settling property of electronic paste, which belongs to the technical field of material science and comprises the following steps: step 1, mixing a diluent, a dispersing agent and a silicon coupling agent in proportion to obtain a mixture I; 2, infiltrating inorganic powder into the mixture I in the step 1 to obtain a mixture II; step 3, adding epoxy resin and phenolic resin into the mixture 2 in the step 2 to obtain a mixture 3; and step 4, uniformly dispersing the mixture 3 in the step 3 into slurry with good fluidity through a high-speed dispersion machine. The electronic paste prepared by the invention has excellent anti-settling property, and the settling volume fraction of the product within 60 days is reduced from 1.5% to 0.6% on the basis of keeping the original rheological property; the method for preparing the electronic paste has the advantage of simplicity in operation and is suitable for large-scale production.

This utility model discloses a forging stress detection device, relating to the field of materials science and technology. The device includes a base with a support frame fixedly connected to its top. A fixing mechanism is mounted on the base, and a detection mechanism is mounted on the support frame. The fixing mechanism includes a limiting ring, with a threaded rod rotatably connected to the inner wall of the limiting ring. By incorporating a soft pad, rotating a knob causes the threaded rod to rotate, which in turn moves a threaded cylinder downwards along the threaded rod. This threaded cylinder then pulls a connecting rod downwards, which in turn pulls the moving blocks closer together. The soft pad, which clamps and fixes the forging, effectively isolates it from external vibrations and the vibrations of the testing equipment, preventing displacement due to insufficient fixation and ensuring the accuracy of the test results.

The invention discloses a method for analyzing mechanical properties of a silane coupling agent reinforced copper-prepreg interface, belongs to the technical field of material science, and is suitable for interface combination optimization of a copper foil and a prepreg in a PCB (Printed Circuit Board). The method comprises the following steps: (1) establishing a prepreg and silane coupling agent cross-linked network model; (2) establishing a copper substrate model and carrying out surface treatment; (3) constructing an inorganic-organic composite interface; (4) enabling the cross-linked network to be in full contact with the copper substrate by compressing the script, and optimizing relaxation to be balanced; (5) applying a tensile force through a tensile script, and recording a stress-strain curve; and (6) comparing curves of different coupling agent systems, and analyzing the interface strengthening micromechanism. The method has the advantage of high-throughput screening, multiple systems can be evaluated in parallel within several days, the efficiency is improved by more than one order of magnitude compared with a traditional experimental period (2-4 weeks per kind), actual reagents do not need to be used, and the research and development cost and the environmental risk are reduced.

This invention belongs to the fields of powder metallurgy and materials science and technology, specifically disclosing a preparation process for a high-wear-resistant WC-based composite material. The process involves preparing WC powder, second-phase powder, and graphene material; adding the graphene material to a dispersion medium and performing ultrasonic dispersion; mixing the graphene dispersion with the WC powder and second-phase powder and ball milling; drying the mixture using a vacuum rotary evaporation drying process; and densifying it using a hot-pressing sintering process. This invention enables the WC-based composite material to simultaneously achieve high hardness and high fracture toughness; effectively inhibits oxidative wear of the WC-based composite material at high temperatures, improving its high-temperature wear resistance; and achieves uniform and stable dispersion of the graphene reinforcing phase in the WC matrix, avoiding agglomeration, thereby fully utilizing its strengthening and lubrication effects. The composite material prepared by this invention is particularly suitable for use as high-speed cutting tools, high-temperature molds, and high-temperature moving parts in aerospace applications, and has broad application prospects.

This invention relates to the field of materials science and technology, and discloses the application of zwitterionic polymer injectable hydrogels as vitreous substitutes. Zwitterionic monomers selected from CBUIA, CBUTA, CBOH, CBMA, or MPC are dissolved in an aqueous phase, and polymerization is initiated by an initiator to obtain a hydrogel. After swelling equilibrium, the zwitterionic polymer injectable hydrogel is obtained. This invention uses initiator-initiated free radical polymerization of monomers and prepares physically cross-linked pure zwitterionic hydrogels through multi-hydrogen bond interactions or chain entanglement. The pure zwitterionic hydrogel with injectable properties is prepared through swelling equilibrium. It exhibits good biocompatibility, which is beneficial for improving the affinity of this zwitterionic polymer-based hydrogel vitreous substitute to the vitreous cavity, reducing adverse reactions after implantation. Furthermore, the preparation method is simple and the conditions are mild, making it more suitable for large-scale promotion and use as a vitreous substitute in ocular surgery, and it exhibits excellent biofouling resistance.

This invention discloses a rare-earth element-doped tellurate scintillation glass thin film, its preparation method, and its applications. It belongs to the field of materials science and technology, using tellurate glass as a substrate and uniformly co-doping with Eu. 3+ Ions and Yb 3+ Ions; the tellurate scintillation glass film has a thickness of approximately 80 nm to 200 nm. The tellurate scintillation glass film obtained by this invention has a uniform thickness and is defect-free, exhibiting high efficiency in Eu scintillation. 3+ →Yb 3+ Its energy down-conversion properties enable it to be used as a near-infrared luminescent or down-conversion material, and it has superior performance potential in areas such as serving as a spectral conversion layer to improve the light response of silicon-based solar cells or as a near-infrared micro scintillator.

This invention provides an atomic spin-resolved probe, its fabrication method, and its applications, belonging to the field of materials science and technology. The atomic spin-resolved probe includes: a tip base with a flat end face; a functional tip bonded to the tip base, the functional tip having a tapered structure that tapers continuously away from the tip base; and a metallic bonding layer for bonding the end face of the tip base to the functional tip; wherein the functional tip is a single-crystal material with topological edge states. This atomic spin-resolved probe alleviates the uncertainty of traditional magnetic probes that rely on magnetic field reversal for spin selection, achieving in-plane spin detection without external magnetization, and providing a high-precision detection tool for studying the spin structure of complex quantum materials.

This application relates to the field of computational materials science and technology, and particularly to a method for targeted design of high-calorific-value energetic alloy materials by coupling elemental information. The method includes the following steps: First, establishing a dedicated energetic alloy material dataset; then, constructing a deep reinforcement learning model for high-calorific-value energetic alloy materials, training the model based on the dedicated energetic alloy material dataset, directionally generating potential energetic alloy material components, and assigning crystal templates to obtain energetic alloy materials with crystal structures; subsequently, training a calorific value and formation energy prediction model based on the dedicated energetic alloy material dataset, predicting newly generated energetic alloy materials, and selecting high-calorific-value energetic alloy materials; finally, using VASP software for computational verification of candidate materials. This application, based on a smart paradigm for materials research and development, combines a deep reinforcement learning model, a neural network prediction model, and quantum mechanical computational verification to achieve targeted design of high-calorific-value energetic alloy materials.

This invention relates to the field of computational materials science and technology, and discloses a method and system for predicting the performance of inorganic composite materials. The method includes: setting the spatial distribution of the composition of a target material and the preparation boundary conditions, and combining computer simulation of the virtual microstructure field of the target material; simulating phase evolution behavior in the virtual microstructure field based on the thermal diffusion constraints of the target material to obtain the phase evolution trajectory of the target material; analyzing the cooperative interference between the grain boundary energy distribution gradient and the stress field divergence in the phase evolution trajectory, and locating the performance-sensitive distribution of the target material based on the cooperative interference; and establishing the symplectic geometric correlation between the corresponding local sensitive extreme points and the microstructure topological invariants of the target material based on the performance-sensitive distribution. This invention can solve the problem of insufficient accuracy in performance prediction calculations in the prior art, which cannot provide reliable data support for performance analysis.

This invention discloses a method for preparing an epoxy resin with a sulfone group and dynamic imine bond structure and its application in motor windings, belonging to the field of materials science and technology. Using β-resol and bis(3-aminophenyl)sulfone, which are widely used in organic synthesis, as raw materials, an epoxy resin precursor containing dynamic imine bonds is first generated in glacial acetic acid. Then, it is reacted with epichlorohydrin to form a ring-closed epoxy resin based on the sulfone group and dynamic imine bond structure. A simpler and more efficient preparation process is employed, and various curing agents are selected during the subsequent curing process to provide more diverse epoxy resin structures. After curing, this epoxy resin exhibits excellent heat resistance and insulation capabilities, solving the technical problem of simultaneously achieving heat resistance and low dielectric properties in existing epoxy resins. The preparation process is simple, the raw materials are readily available, and it is suitable for industrial production, with wide applications in high-frequency printed circuit boards, high-temperature structural adhesives for aerospace, and electronic packaging materials.

The invention belongs to the technical field of material science, and particularly relates to a rare-earth-based fluorine cluster for magnetic resonance imaging and cell imaging and a preparation method and application of the rare-earth-based fluorine cluster. The molecular formula of the rare earth based fluorine cluster is [(RE24 (3-F) 22 (OH) 6 (tBuCOO) 21 (Hdmpa) 11 (H2dmpa) 7CH3OH CH3CN], RE is a rare earth element, BuCOOH is trimethyl acetic acid, H3dmpa is a 2, 2-bis (hydroxymethyl) propionic acid ligand, and OH and 3-F are in a bridging mode of fluorine ions. The rare earth-based fluorine cluster provided by the invention has excellent thermal stability and solution stability, and the gadolinium-based cluster compound shows longitudinal relaxation efficiency superior to that of a commercial contrast agent Gd-DTPA; the material has good corrosion resistance, is easy to process and form, can stably exist at 300 DEG C due to good thermal stability, and the introduction of fluorine ions in the structure can enhance the quantum yield of europium and terbium group clusters.

The present application relates to a kind of two-component screen for interlaminar toughening of composite material and its preparation method, belong to material science and technology field, preparation method, comprising: preparation soluble in epoxy resin component's spinning solution and insoluble in epoxy resin component's spinning solution;Using multiple rows of needleless electrospinning, two kinds of spinning solution are synchronously sprayed on the same base cloth, and form two-component fiber web;Peel the base cloth, obtain two-component screen for interlaminar toughening of composite material.The present application uses the technical means that soluble component solidification phase separation into microspheres, insoluble component keeps fiber form, realizes the technical effect of " microspherical passivation crack + fiber bridging pull out " progressive type synergic energy dissipation, solves the single toughening mechanism, interlaminar fracture toughness is insufficient, and weak technical problem such as anti delamination capacity.

The application provides a rare earth single atom-noble metal cluster composite catalyst and a preparation method and application thereof, and belongs to the fields of material science and technology and electrocatalysis. The mass percentage of noble metal in the rare earth single atom-noble metal cluster composite catalyst is 0.28-1.2%, and the mass percentage of the rare earth single atom is 0.02%-0.03%. The noble metal includes ruthenium or rhodium, and the rare earth single atom includes cerium single atom or lanthanum single atom. The composite catalyst simultaneously contains atomically dispersed rare earth single atoms and noble metal clusters with an average size of 1 nm. By introducing atomically dispersed cerium single atoms, the alkaline hydrogen evolution performance of the noble metal cluster catalyst is greatly improved, so that the catalyst can achieve excellent hydrogen production performance when a very low amount of noble metal is used.

The application provides a kind of heterogeneous porous HKUST-1 / g-C3N4 composite material and its preparation method and application, belong to nanometer material science and technology field.The preparation method of the present application is to carry out first heat treatment to g-C3N4 precursor under air atmosphere, obtain g-C3N4 powder;After ultrasonic treatment of g-C3N4 powder, second heat treatment is carried out under air atmosphere to obtain g-C3N4 nanosheet;With water, ethanol and N, N-dimethylformamide as mixed solvent, g-C3N4 nanosheet, first copper salt and organic ligand are electrostatic self-assembly and hydrothermal reaction, to obtain HKUST-1 / g-C3N4 composite material;Disperse it in second copper salt solution, carry out third heat treatment under air atmosphere, to obtain heterogeneous porous HKUST-1 / g-C3N4 composite material.The material prepared by the present application has excellent catalytic performance without oxidant and light.

The invention relates to a dynamic evolution simulation method and system for an aluminum alloy high-solid-phase rheo-die-casting microstructure, and belongs to the technical field of aluminum alloy material solidification numerical simulation and calculation material science. The simulation method comprises the following steps: (1) establishing a rheo-die-casting whole-process model, and constructing a control equation set of a coupling phase field and a solute field by adopting a quantitative phase field model framework; a macroscopic temperature field is obtained through multi-scale parameters, thermodynamic parameters are coupled and called in real time, secondary alpha2-Al phase nucleation in the second-stage rheology die-casting forming process is simulated through a spontaneous nucleation calculation method, and numerical solution and visualization are conducted; (2) setting boundary conditions; (3) solving an equation; and (4) data processing. The invention also discloses a simulation system. According to the method, whole-process dynamic simulation is achieved for the first time, macroscopic-to-mesoscopic multi-scale thermodynamic multi-physics field accurate coupling is achieved, and the method is high in engineering applicability and suitable for binary alloy.

The embodiments of this application relate to the field of computer materials science and technology, specifically to a method and system for determining the xenon bubble order parameters, grain orientation order parameters, and phase region order parameters of irradiated bubbles generated by metallic fuels under irradiation conditions, as well as a computer storage medium. The method includes: determining the solid-phase interface energy coefficient, gas-phase interface energy coefficient, and grain boundary energy coefficient based on the solid-solid interface energy, gas-solid interface energy, and grain boundary energy of U-Zr and U-Pu-Zr metallic fuels; determining the grain orientation order parameters and phase region order parameters based on the initial distribution of grains and phase regions during the irradiation process; and determining the xenon bubble order parameters based on the polycrystalline interaction energy density, solid-phase interface energy coefficient, gas-solid interface energy coefficient, grain boundary energy coefficient, grain orientation order parameters, and phase region order parameters. This method can intuitively reflect the influence of the microstructure of metallic fuels on the evolution of irradiated bubbles, realizing the simulation of the irradiated bubble evolution process at the mesoscale.

The application provides a preparation method of NiP2 crystal, namely, an oscillation type heating is used to control the nucleation number of the crystal, and a cooling rate is controlled, so that NiP2 single crystals with different sizes and shapes are successfully prepared. The application belongs to the field of material science and technology. The crystal growth method provided by the application is not only simple in process and low in cost, but also controllable in crystal size and shape. The application not only solves the problem of difficult growth of large-size NiP2 single crystals, but also has great significance for the development of traditional crystal growth technology and semiconductor preparation process.

This invention discloses a transfer device and method for low-dimensional thin films, belonging to the field of materials science and technology. The transfer device includes a tank containing a base, with a support frame mounted above the base. A spinning assembly is mounted on the support frame. The spinning assembly includes a spinning column and an eccentric floating joint and a pressure head sequentially connected below the spinning column. The spinning column and the support frame are movably connected via a connecting mechanism. During the low-dimensional thin film transfer process, rotating the spinning column causes the pressure head to move downwards, pressing the sample to be transferred tightly against the target substrate. Adding liquid to the tank removes the sacrificial layer, separating the thin film from the original substrate. Subsequent heat treatment achieves the transfer of the functional thin film to the target substrate. This device and method can compensate for flatness deviations between the sample and the substrate, reduce local stress concentration, improve the integrity of low-dimensional thin film transfer, and the transfer process does not require a flexible support substrate.

This invention discloses a multi-field coupled aging assessment method for meta-aramid insulating paper based on molecular simulation, relating to the fields of high-voltage insulating materials and computational materials science and technology. It involves loading three aging factors—temperature, moisture content, and electric field strength—into molecular dynamics and reaction kinetics simulations, and outputting the system's microstructure and energy information at preset time intervals to describe the aging evolution process of the meta-aramid insulating paper. The beneficial effects of this invention are: utilizing molecular dynamics and reaction kinetics to simulate the microstructure evolution and reaction behavior of meta-aramid insulating paper under the combined influence of multiple factors such as temperature, moisture, and electric field, achieving mechanism identification and key parameter extraction of the aging process, shortening the assessment cycle, and improving the assessment effect.

The application provides a prediction method for self-shrinkage deformation of internally cured high-strength concrete, and relates to the technical field of concrete material science and technology. cr and the water release amount w ic of the internally cured material under 85% relative humidity; S2: calculating the self-shrinkage ε w1 caused by chemical shrinkage and related parameters; S3: calculating the self-shrinkage ε w1 caused by chemical shrinkage; S4: calculating the self-shrinkage ε w2 caused by self-drying and related parameters; S5: calculating the self-shrinkage ε w2 caused by self-drying; and S6: calculating the total self-shrinkage. Compared with a traditional mechanism model, the prediction method of the application does not need complex internal relative humidity monitoring, and avoids errors caused by sensor accuracy or data fluctuation. Compared with a specification formula, the prediction method of the application has higher accuracy, and can more truly represent the improvement effect of the internally cured material on the volume stability of the concrete.

The utility model provides electromagnetic shielding cloth high-precision fiber laying equipment, and relates to the technical field of material science, the electromagnetic shielding cloth high-precision fiber laying equipment comprises a fixed plate, the inner walls of the two sides of the fixed plate are rotatably connected with adjusting rods I, the outer wall of the end part of one side of each adjusting rod I is rotatably connected with a roller, and the outer wall of the roller is provided with an adhesive; a first spring strip is fixedly connected to the inner wall of the first adjusting rod, the end of one side of the first spring strip is fixedly connected to the inner wall of the fixing plate, second adjusting rods are rotationally connected to the inner walls of the two sides of the fixing plate, a grinding roller is rotationally connected to the outer wall of the end of one side of each second adjusting rod, and a friction cushion is installed on the outer wall of the grinding roller. According to the electromagnetic shielding cloth laying device, the structure of the roller and the adhesive is adopted, impurities on the to-be-laid part are adhered and cleaned before laying, then the structure of the rolling roller and the friction cushion is adopted, and the electromagnetic shielding cloth is rolled after laying, so that the electromagnetic shielding cloth is more attached to the laying part; and the soft cushion structure does not cause damage to the surface of the electromagnetic shielding cloth.

This invention belongs to the field of metal materials science and technology processing, and relates to a forging method for ultra-large TC32 titanium alloy forging billets. This invention proposes a maximum diagonal length Dmax for large-sized billets, where the ingot or billet satisfies 1.0 ≤ H / D. 始max ≤2.5 range, and h 始 = (0.01~0.3)×D 始max When upsetting at a uniform speed within the hot working temperature range of 840℃~1200℃, the bulging deformation in the middle of large-sized TC32 titanium alloy ingots or billets is uniform, and the deformation dead zone range at the upper and lower ends of the billet is small. This process variable was introduced in stage I, and the optimal D for this stage was determined. max The amount of pull-out per hammer blow and D max The two-stage hammer reduction is also specified in the process specifications, which significantly improves the forging penetration and uniformity of large-size TC32 titanium alloy billets during the drawing stage within the corresponding range. Through reasonable process settings, this invention achieves precise control of the entire forging process, improves the stability and consistency of forging processes in different batches, and thus improves batch stability.

The utility model provides a kind of high sealing property car door assembly component, it is related to material science and technology field, including rubber soft pad, the rubber soft pad inner wall is fixedly connected with fireproof layer, the fireproof layer inner wall is fixedly connected with anti-collision layer, the anti-collision layer inner wall is fixedly connected with sealing layer, the sealing layer inner wall is fixedly connected with moisture-proof layer, the moisture-proof layer inner wall is fixedly connected with filling layer.The utility model, using the structure of rubber soft pad and filling layer, can be aimed at different size car door, this assembly component can be well installed, secondly using fireproof layer and anti-collision layer structure, wherein fireproof layer uses non-combustible material, anti-collision layer uses rigid material, not only can avoid the fire caused by device flammable, and can improve the impact coefficient of device, improve the service life of device, in addition using sealing layer and moisture-proof layer structure, can effectively prevent the gas and water vapor etc. Liquid of outside pass through device and enter into the interior of car compartment.