723 results about "Composite process" patented technology

The invention relates to a distribution line mixed pillar porcelain insulator injection molding whole process optimization method and an on-line monitoring method, and belongs to the field of mixed pillar porcelain insulator injection molding process optimization. As the mixed insulator is a new product, research on the compounding process of the high-temperature vulcanized silicone rubber and the porcelain piece is less at present. How to effectively compound high-temperature vulcanized silicone rubber and a mixed porcelain post insulator to obtain an optimal forming process of a novel mixed porcelain post insulator is a key point of consideration. Glue injection simulation analysis and online monitoring of the actual glue injection process are combined, comprehensive analysis is carried out on the composite process of the mixed insulator, and therefore the most suitable injection scheme is obtained. According to the method, the problem of determining important parameters in the whole process of injecting the high-temperature vulcanized silicone rubber on the surface of the porcelain part is solved, and the problems of actual feedback and dynamic adjustment in the rubber injection process are also solved.

The invention discloses a multi-layer composite barrier film and a production process thereof, and belongs to the field of polymer composite materials. Aiming at the problems of obvious performance attenuation, poor interlayer binding force and low step-by-step compounding process efficiency of a barrier film in a humid and hot environment in the prior art, the invention provides a five-layer asymmetric structure design: an outer layer, a bonding layer, a barrier layer, a bonding layer and an inner layer. Wherein the barrier layer is formed by blending EVOH and MAH-PA6 and cooperating with nano montmorillonite to form a multi-barrier network, so that the oxygen permeability is smaller than or equal to 0.3 cm / (m.24h. 0.1 MPa), and the water vapor permeability is smaller than or equal to 1.5 g / (m.24h). The production process innovation comprises five-layer co-extrusion melt flow rate ratio control, three-roller gradient cooling and a bidirectional plasma processing technology, the continuous production speed is larger than or equal to 120 m / min, and the interlayer peeling strength is larger than or equal to 8 N / 15 mm. The barrier property stability is remarkably improved.

The invention discloses double-metal composite pipe machining equipment and a method for machining a double-metal composite pipe. The double-metal composite pipe machining equipment comprises a supporting table, a machining table and a machining table, the sliding assembly is arranged on the supporting table and comprises a first sliding rail and a second sliding rail; the drilling device is arranged on the sliding assembly and used for drilling the pre-sleeved blank; the riveting device is arranged on the sliding assembly and used for riveting the inner base pipe and the outer covering pipe which are pre-sleeved with the blank; the clamping and feeding device is used for clamping the pre-sleeved blank and driving the pre-sleeved blank to move and rotate; and the pipe rolling unit is arranged on the supporting table and used for rolling the pre-sleeved blank to form the bimetal composite pipe. When the device is applied, the inner base pipe and the outer covering pipe do not need to be welded, but the inner base pipe and the outer covering pipe are riveted and fixed, so that the inner base pipe and the outer covering pipe are prevented from being staggered in the rolling and compounding process.

The invention discloses a nursing pad with a gradient absorption structure and a compounding process thereof, and relates to the field of nursing pads, the nursing pad comprises a flow guide surface layer, an absorption layer, a water locking support layer, a micro-channel layer and a PE film bottom layer which are sequentially compounded from top to bottom; the absorption layer comprises low-crosslinking SAP and fluff pulp, and the thickness of the absorption layer is 3-4 mm; the water-locking supporting layer comprises highly crosslinked SAP, PVA fibers and hot melt adhesive powder, and the thickness of the water-locking supporting layer is 2-3 mm; the density of the absorbing layer is 0.1-0.15 g / cm < 3 >, the density of the water locking supporting layer is 0.3-0.4 g / cm < 3 >, and the absorbing layer and the water locking supporting layer are used for forming a density gradient structure from the absorbing layer to the water locking supporting layer. A gradient density structure of a soft core and a hard shell is formed by constructing the rapid water absorption characteristic of low cross-linked SAP of the absorption layer and combining a rigid network of high cross-linked SAP of the water locking supporting layer and PVA fibers, the problem that the thickness of a traditional homogeneous structure is not uniform due to disordered accumulation of SAP is solved, and therefore the fitting performance of the nursing pad and the skin is further improved; and the pressure sore risk caused by local pressure concentration is reduced.

The invention relates to the field of screw forming, and discloses a screw cold heading forming process which is characterized by comprising the following steps: step 1, wire preparation and surface pretreatment: based on the requirement of screw forming on the surface quality of raw materials, a metal wire is treated by adopting a mechanical wiredrawing and chemical phosphating and saponifying composite process, and the surface of the metal wire is treated; surface oxide skin is removed, a lubricating film layer is formed, and the forming flowability and the service life of the die in the subsequent cold heading process are effectively improved. A raw material is subjected to spheroidizing annealing treatment in a continuous spheroidizing annealing furnace, internal pearlite is converted into spherical cementite, the ductility and deformation uniformity of the material are improved, then a continuous wire drawing machine is adopted for multi-stage drawing diameter reduction, a three-stage chemical phosphating-saponification treatment process is matched, a low-friction and high-adhesion lubricating film layer is formed, and the service life of the lubricating film layer is prolonged. And a stable material basis and a lubricating environment are provided for the subsequent cold heading process, so that the problems that the friction resistance generated in the forming process of a screw material is large, and a mold is quickly worn are solved.

The present invention discloses an intelligent monitoring and management method and system for an exterior wall decorative panel production line, which relates to the field of intelligent monitoring and management, including three steps: pre-production simulation, in-production monitoring, and post-production inspection, and deploys an intelligent management system including a central processing module, a monitoring equipment module, and a human-computer interaction interface to monitor and optimize the three processes of gluing, pressurizing and curing, and cooling and shaping of the composite process flow. The present invention can be used for intelligent monitoring and management in the composite process flow of exterior wall decorative panels, which not only improves production efficiency, product quality and safety, but also provides a traceable basis for subsequent composite process optimization, through which the production line can be optimized in a timely manner to further improve product quality.

The invention relates to a method for preparing rubber powder by adopting a high-pressure water jet composite method. The method comprises the following preparation steps: S1, crushing rubber particles; s2, performing impact type filtration; s3, internal circulation of the rubber powder liquid; and S4, solid-phase separation and recovery. The cavitation effect and the high-speed impact effect in ultrahigh-pressure water jet can enable a rubber material to achieve the low-temperature crushing effect at the normal temperature, so that the purpose of preparing fine rubber powder can be achieved at the normal temperature in a low-energy-consumption, low-cost and environment-friendly manner; meanwhile, the actual filtering area of the filter cartridge is increased to the maximum extent, and the filtering effect and efficiency are improved to a great extent.

The invention discloses a stirring friction coaxial additive and subtractive composite machining manufacturing device and method, and aims to solve the problems that an existing additive and subtractive composite technology generally adopts a machining scheme of first additive and then subtractive, equipment is complex, multiple machining procedures are needed, and the period is long. The friction stir additive manufacturing device comprises a friction stir additive manufacturing module, a material reducing module, a side wall supporting module, a static shaft sleeve and a fixing support, the friction stir additive manufacturing module comprises a stirring tool, a static shaft shoulder and a wire, and the stirring tool, the side wall supporting module and the static shaft shoulder are sequentially arranged from inside to outside; a wire enters a cutting part of the stirring tool through the static shaft shoulder and the side wall supporting module, the upper end of the static shaft shoulder is fixedly connected with the lower end of the static shaft sleeve, and the material reducing module is connected with the static shaft sleeve through a fixing support. And through the coaxial additive and subtractive composite machining technology, a more flexible and efficient preparation scheme is provided for preparation of functional, integrated and light-weight complex structural parts. The invention belongs to the field of friction stir additive manufacturing.

The invention discloses an interface enhancement gradient design method of an anti-impact aviation glass laminated structure, and relates to the technical field of composite material design, the method comprises the steps of glass material preparation, interface enhancement gradient design, lamination compounding, quality detection and performance testing, the glass material comprises a glass layer material, a middle layer material and a transition layer material, the laminated composite process comprises the steps of pre-strain treatment, pre-pressing treatment, hot-pressing combination and cooling demolding, and has the advantages that by arranging the transition layers with components and performance in gradient change, the content of reinforcing materials such as nanometer titanium dioxide particles and graphene nanosheets in each transition layer is gradually increased; and compared with a traditional uniform or simple layered structure, the gradient design has the advantage that the phenomenon of interface stress concentration caused by performance difference between the glass layer and the polymer intermediate layer is remarkably reduced.

The present invention relates to the technical field of reflective film and discloses a reflective film for photovoltaic use and a preparation method thereof. The present invention prepares a four-layer composite structure, namely a protective layer, a reflective layer, a base layer, and an adhesive layer. Each layer is bonded together by a hot pressing composite process. Each layer has insulating properties. In addition, a modified EVA adhesive layer is used as a bottom functional layer, which has both strong adhesiveness and insulating properties. The prepared reflective film has excellent insulating properties, weather resistance, and high reflectivity, and has great application value in the field of photovoltaic reflective film.

The invention aims at disclosing a forming process and a hot rolling device of a high-thermal-conductivity titanium-aluminum composite plate, and relates to the technical field of titanium-aluminum composites.The forming process comprises the following steps that S1, laser texturing is conducted on the surface of a TC4 alloy titanium plate so as to remove an oxide layer on the surface of the TC4 alloy titanium plate, and the roughness of the surface of the TC4 alloy titanium plate is textured to Ra2.0 micrometers to Ra3.0 micrometers through laser; s2, the TC4 alloy titanium plate and the high-strength aluminum plate are prepared into a composite plate through a hot rolling composite technology, and the titanium face of the composite plate faces the ground; s3, the hot-rolled composite plate passes through a guide roller in an upward inclined mode and then is discharged in an inclined downward mode; s4, the discharged composite plate is cut into a plurality of plates with the same size according to the set size, and the plates are arched; the method has the beneficial effects that oxides on the surface of the TC4 alloy titanium plate are removed through laser texturing, new titanium alloy is exposed, metal bonding and mechanical meshing of a titanium-aluminum interface are remarkably enhanced, and the heat conduction performance and bonding strength of the composite plate are fundamentally improved.

The invention relates to the technical field of polymer composite materials, in particular to a polycaprolactone-based composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out surface grafting treatment on nano cellulose to obtain modified nano cellulose; mixing the modified nanocellulose, polycaprolactone and a solvent to obtain slurry; carrying out melt blending and granulation on the slurry to obtain composite granules; and carrying out melt blending and granulation on the composite granules, a metal soap stabilizer and a natural resin derivative to obtain the polycaprolactone-based composite material. The polycaprolactone-based composite material prepared by a novel composite process of nano cellulose graft modification-solvent replacement synergetic melt co-extrusion has the core advantages of high mechanical strength, excellent light transmittance, long-acting weather resistance and the like, is good in processing adaptability and simple and convenient to operate, can realize continuous large-scale production, and remarkably reduces energy consumption and raw material cost.

The invention discloses a full-automatic vehicle film laminating machine and a hot-pressing compounding process thereof, and aims to improve the production efficiency of a vehicle film and the adhesive force of a film layer. The laminating machine comprises an electrostatic spraying chamber and a hot pressing chamber, and efficient compounding of membrane materials is achieved through the synergistic effect of the electrostatic spraying chamber and the hot pressing chamber; a film material is automatically fed into a laminating machine through an upper-layer film leading-in roller and a base material film leading-in roller, after the film material enters an electrostatic spraying chamber, the surface of the film material is subjected to corona treatment, and a nano coating solution is uniformly sprayed on the surface of an upper-layer film through an atomizer; meanwhile, redundant charged particles on the surface of the substrate film are collected through an electrostatic collection plate; the sprayed membrane material enters a hot-pressing chamber, and is heated and pressurized under the action of a hot-pressing roller, so that the two layers of membranes are tightly combined, and the high bonding strength between the membrane layers is ensured; and finally, the finished product film material is wound through a finished product storage roller, and a high-quality vehicle film product is formed.

The invention relates to the technical field of material preparation, and discloses a nano-composite construction preparation method and system for a high-flexibility display film, and the method comprises the steps: setting a composite construction sequence corresponding to a nano-composite material; calculating the interface coupling bonding strength of the nano composite material in the compounding process, calculating the deformation adaptation coefficient of the display film substrate in the compounding process, and analyzing the dynamic synergistic compounding efficiency of the nano composite material; thermal gradient distribution data and pressure load data of the nanocomposite in the construction process are recorded, the stress relaxation rate in the display film after construction is completed is calculated, the uniform attenuation coefficient of the interlayer structure of the display film is calculated, and the multi-dimensional structure stability performance of the display film is evaluated; and determining a composite gradient distribution strategy of the nano composite material, formulating preparation process parameters of the display film in nano composite construction, and executing composite construction preparation of the nano composite material to obtain a finished product of the high-flexibility display film. According to the invention, the quality stability of the preparation of the high-flexibility display film can be improved.

The invention provides a preparation method of a nickel-based WC alloy coating on the surface of a glass mold punch. The preparation method sequentially comprises the steps of matrix pretreatment, hypersonic flame spraying, ultrahigh-speed laser remelting and aftertreatment. The nickel-based WC alloy coating is prepared on the surface of the glass mold punch by adopting a supersonic spraying and ultra-high-speed laser remelting composite process, on one hand, a mechanical interlocking framework is formed by adopting nano-scale WC powder and micron-scale WC powder composite double-peak gradient powder, rare earth oxide is doped, nano-particle aggregation is inhibited through a vacuum ball-milling process, and the mechanical interlocking framework is formed by adopting a double-peak gradient powder composite double-peak gradient powder; the compactness of a cladding layer is improved; and on the other hand, the parameters of the composite technology are controlled, it is guaranteed that nanoscale WC is completely dissolved in a molten pool, a W-C-Fe diffusion layer is formed on an interface, a WC / W2C hard phase is separated out after micron-sized WC is partially dissolved, the bonding strength is improved, and the compactness and hardness of the coating are improved.

The invention discloses special hot work die steel for large-scale integrated die casting and a preparation method of the special hot work die steel, and belongs to the technical field of hot work die steel. The steel comprises the following chemical components in percentage by mass: 0.28%-0.35% of C, 0.01%-0.025% of La, 0.01%-0.02% of Ce, 0.4%-0.45% of Mn, 0.1%-0.2% of Si, 4.5%-5.5% of Cr, 1.50%-2.00% of W, 2.2%-2.8% of Mo, 0.8%-1.2% of V, 1.0%-1.5% of Co, 0.1%-0.3% of Nb and the balance of Fe and impurities (S and P are less than or equal to 0.015%). The preparation method comprises the composite processes of vacuum induction melting and electroslag remelting purification, hydrogen firing high-temperature homogenization and three-upsetting and three-drawing multi-directional forging, spheroidizing annealing and subzero treatment, step quenching and double tempering, multi-element co-permeation, supersonic particle bombardment surface nanocrystallization and plasma boriding. The rare earth element La / Ce refined grain boundary is combined with multi-element alloy strengthening and surface nanocrystallization-boronizing synergistic treatment, so that the hardness, impact toughness and thermal fatigue life of the die steel are remarkably improved, and the die steel is suitable for high-temperature, high-pressure and high-wear working conditions of a large integrated die-casting die.

The invention relates to an aviation titanium alloy laser shock peening and mechanical shot peening composite process strengthening method. The method comprises the following steps: cutting an aviation titanium alloy material into a plurality of square blocks and tensile fatigue parts by using a wire cutting machine; grinding with abrasive paper, and then polishing with a polishing agent, so that the surface of the aviation titanium alloy test material is smooth; carrying out laser shock peening treatment on one part of the aviation titanium alloy test material subjected to surface treatment; performing various detections on the aviation titanium alloy test material subjected to the same parameter and different impact strengthening times; the method comprises the following steps: carrying out mechanical shot blasting on an aviation titanium alloy sample with the best detection effect, carrying out mechanical shot blasting on part of original samples, then carrying out laser shock peening, and comparing the mechanical properties of the materials subjected to shock peening in different modes to obtain an optimal result. According to the method, two processes of mechanical shot peening and laser shock peening are combined, so that the fatigue resistance, the damage resistance and the stress corrosion resistance of the material are improved.

The invention relates to the technical field of composite materials, in particular to a dry fiber band compounding device and method.The dry fiber band compounding device comprises a fiber band unwinding and winding mechanism and a fiber band winding mechanism, and the fiber band unwinding and winding mechanism comprises a fiber band unwinding assembly and a fiber band winding assembly; the powder spreading mechanism uniformly spreads powder towards the direction of the fiber belt; the two felt unwinding mechanisms are used for conveying felt materials to the upper layer of the fiber belt and the upper layer of the powder; the two release paper unwinding and winding mechanisms comprise a release paper unwinding assembly and a release paper winding assembly; the heating and pressurizing mechanism comprises a heating roller group and a cooling roller group, and is used for heating and applying pressure to the fiber belt, the powder and the felt between the two pieces of release paper; the hole pricking mechanism comprises needle rollers which can be relatively close to or far away from each other towards the fiber belt, and pointed needles are arranged on the needle rollers. According to the invention, through high coordination of powder sprinkling, heating and punching, roller gaps and applied pressure in the compounding process are accurately controlled, so that the compactness of a dry fiber belt is moderate, the permeability of a material in vacuum infusion is improved, and the high-quality mechanical property and application effect of a finished product are ensured.

The invention discloses geopolymer cement based on coal gangue activation reaction as well as a preparation method and application thereof, and relates to the technical field of building materials. The invention relates to a coal gangue concrete, which is prepared from the following raw materials in percentage by mass: 50 to 70 percent of activated coal gangue powder, 5 to 15 percent of alkali activator, 10 to 30 percent of auxiliary cementing material and water, wherein the water accounts for 30 to 40 percent of the total mass of the activated coal gangue powder, the alkali activator and the auxiliary cementing material. Through a composite activation process of medium-temperature calcination decarburization and superfine grinding, the activity of silicon-aluminum components in the coal gangue is effectively excited, the reaction efficiency is remarkably improved, the mixing amount of the coal gangue reaches 50%-70%, the resource utilization rate of solid waste is greatly increased, and efficient activation and resource utilization of the coal gangue are achieved. By adopting the methyl sodium silicate and sodium silicate composite activator, the reaction rate and the product structure are regulated and controlled, and the workability and the setting and hardening behaviors of slurry are improved, so that the obtained geopolymer cement has relatively high early and later strength and excellent durability.

The invention relates to the technical field of functional paper production, in particular to a pressing and flat pasting composite process of skin-touch surface polymer coated paper, which comprises the following steps: pretreating a base material through low-temperature plasma to form a nano groove; the preparation method comprises the following steps: preparing a bottom coating solution containing sulfydryl modified polyurethane and other components, a middle coating layer containing a carbon nanotube forest and a surface coating solution containing a fluorosilicone block copolymer, and sequentially coating, drying and curing; the coated paper and the base material treated by the silicon dioxide transition layer are compounded after being subjected to vacuum hot pressing and steam treatment, and then are subjected to ultraviolet ozone treatment, so that the comprehensive performance is improved. According to the process, by innovating a coating formula and a compounding technology, the wear resistance, pollution resistance and touch performance of the coated paper are remarkably improved, and the functions of antibiosis, temperature sensing adjustment and the like are achieved; the gloss is adjustable, the adhesive force is high, the VOCs emission is low, the environmental protection property is good, and the multi-element requirements of the high-end market are met.

The invention relates to the technical field of space exploration and lunar soil experiments, in particular to a melting centrifugal type mineral particle morphology remodeling device and a lunar soil glass ball preparation method. The device comprises a mineral protolith high-temperature melting system, a mineral melting slurry conveying system, a centrifugal mineral particle size control system and a mineral particle cooling and morphology remodeling system. The preparation method of the lunar soil glass ball comprises the following steps: adding basalt mineral powder and mineral melting additive powder into a melting centrifugal mineral particle morphology remodeling device to obtain simulated lunar soil glass balls with different particle sizes, and performing morphology transformation on the simulated lunar soil glass balls with different particle sizes by using an ion beam gun. And the lunar soil glass ball state of the impact melting history is reduced. According to the method, high-precision engineering mass production of components, morphology and mechanical properties of the lunar soil glass balls is realized through a fusion centrifugal forming and ion beam surface control composite process, and the problem of soil mechanical behavior deviation caused by morphology distortion of existing simulated lunar soil is solved.

The invention belongs to the technical field of nuclear power, and particularly relates to a nuclear power plant equipment coating heat conductivity coefficient prediction method and device. According to the model building disclosed by the invention, the common defects of pores and macroscopic horizontal cracks in the coating are considered, the coating is used as a tight skeleton, pore and crack three-phase composite system, and after one defect is gradually added into the substrate, the formed system becomes a new substrate in the next step. And repeating the compounding process until the two defects of pores and cracks are added into the system. Therefore, the actual operation state of the thermal barrier coating of the nuclear power equipment can be simulated more vividly. Furthermore, pore shape influence factors and crack shape influence factors corresponding to different porosities and crack rates can be determined through modeling and heat conductivity coefficient simulation calculation, and the actual heat conductivity coefficient of the coating is further predicted. And a theoretical basis is provided for researching the failure behavior of the service thermal barrier coating.

The invention discloses bimetal composite pipe machining equipment and a bimetal composite pipe machining method. The bimetal composite pipe machining equipment comprises a supporting frame, a clamping device, a spinning device, a pushing device and a pipe rolling unit. The clamping device can clamp the pre-sleeved blank and drive the pre-sleeved blank to rotate; the spinning device comprises a spinning driving part and at least one spinning wheel, and the spinning driving part can drive the spinning wheels to move in the radial direction and the axial direction of the pre-sleeving blank; the pushing device is arranged on the side, away from the spinning device, of the clamping device and comprises a pushing part and a pushing driving part, the pushing part can abut against the end of the pre-sleeving blank, the pushing driving part can drive the pushing part to move in the axial direction of the pre-sleeving blank, and the pushing part can penetrate through the through hole of the clamping device; and the pipe rolling unit is used for rolling the pre-sleeved blank to form the bimetal composite pipe. The problem that an inner base pipe and an outer coating pipe which cannot be welded are staggered in the rolling and compounding process is solved, and meanwhile production efficiency is improved.

The utility model discloses double-sided coating compound equipment, and aims to solve the problem that the quality of a product is unstable easily due to the fact that a material is inevitably contacted with a guide wheel in the compounding process of the conventional double-sided coating equipment. The equipment comprises a double-sided coating mechanism, a suspension type drying oven, a suspension type steering drying oven, a compounding mechanism and a finished product winding mechanism, wherein the suspension type steering drying oven comprises a steering box, a steering fresh air system inlet, an upper steering air duct and a lower steering air duct, and the upper steering air duct and the lower steering air duct are arranged in the steering box. Through the design that the suspension type steering drying oven is arranged at the outlet of the suspension type drying oven, materials are kept in the middle and are prevented from being in contact with objects under the combined action of wind pressure on the two sides during working, so that the glue surface of material coating is ensured to be intact, the phenomenon that the material operation tension cannot be effectively controlled due to adhesion is improved, and the service life of the materials is prolonged. And the problem of unstable product quality is avoided.

The invention relates to the technical field of biomedical material manufacturing, and particularly discloses a gradient composite scaffold 3D printing process based on AI topological optimization, which comprises the following steps: a) based on medical image data of a patient, generating a digital model with porosity gradient distribution of 20-200 [mu] m and PCL / MCC material proportion gradient change through AI topological optimization; b) a double-nozzle FDM system is adopted to implement gradient printing, the layer thickness is 50 microns, the material switching frequency is 20 Hz, and the gradient resolution is 5% / layer; c), an electrostatic spinning nanofiber layer is deposited after FDM printing of each layer, the fiber diameter is 500 + / -50 nm, and the deposition density is 10-20 g / m. The method has the beneficial effects that through finite element analysis verification, the AI topological optimization enables the matching degree of the porosity and the component gradient of the stent and the natural bone to be greater than 90%, the mechanical distribution is more uniform, and the stress concentration is avoided; by adopting a double-nozzle FDM (20Hz switching frequency) and electrostatic spinning composite process, the interlayer shear strength is improved to 5.8 MPa, and the problem of traditional interface layering is solved.

The invention relates to the technical field of reflective films, and discloses a photovoltaic reflective film and a preparation method thereof.The photovoltaic reflective film is of a four-layer composite structure, namely a protective layer, a reflective layer, a base layer and a bonding layer, all the layers are bonded through a hot-pressing composite technology and have insulation performance, the modified EVA bonding layer serves as a bottom functional layer, and the protective layer, the reflective layer, the base layer and the bonding layer are bonded through a hot-pressing composite technology. The prepared reflective film has the functions of high adhesion and insulativity, has excellent insulativity, weather resistance and high reflectivity, and has great application value in the field of photovoltaic reflective films.

The invention provides a metal part additive and subtractive deformation prediction and control method and system. The method comprises the steps that a finite element model of an additive manufacturing process is established, material equivalent inherent strain of laser directional energy deposition under different processes is calculated, and a mapping relation between laser deposition process parameters and the material equivalent inherent strain is established; establishing a finite element model of a subtractive milling process, extracting milling loads applied to a workpiece by a milling tool bit under different processes, and establishing a mapping relation between a milling process and the milling loads; building a macrostructure additive and subtractive finite element model, calculating the residual stress of the structure under the laser directional energy deposition process through an inherent strain method, and loading a milling load according to a milling path to calculate the overall deformation of the structure in the subtractive process; and through the established mapping relation and the macro-structure additive and subtractive finite element model, the additive and subtractive composite process optimization design with the minimized structural deformation is developed, and macro-structure manufacturing deformation control is achieved.

The invention relates to a hot rolling composite process for improving the strength of a low-alloy high-strength steel / nickel-based alloy bimetal composite plate, and belongs to the technical field of materials. Firstly, a welded assembly is subjected to heat preservation for 2-4 h at the temperature of 1250 DEG C, large-deformation rolling is adopted at the temperature higher than 1000 DEG C after discharging, the rolling reduction of each pass is larger than or equal to 20%, and in the stage, a composite plate is rolled to be 70% or above of the target thickness; and when the temperature is 900-1000 DEG C, rolling to a target thickness by adopting small deformation, and then cooling to room temperature in air. Effective metallurgical compounding of the bimetallic material can be realized by using the hot rolling compounding process, the obtained bimetallic compound interface is flat and straight and has no metallurgical defects such as pores and cracks, the interface of a sample subjected to three-point bending is still well compounded, and cracks are not generated macroscopically and microcosmically. According to the hot rolling composite technology, the back stress strengthening effect of a composite interface can be fully exerted, meanwhile, the proportion of dynamic recrystallization grains in the nickel-based alloy is reduced, and the strength of a nickel-based alloy layer is improved.

The invention belongs to the field of welding wire preparation, and particularly relates to a method for preparing an ODS steel welding wire based on a spray deposition and electric arc melting combined process. According to the technical scheme, the preparation method comprises the following steps: performing surface modification on Y2O3 particles and Fe powder to prepare mixed powder; an ODS alloy is smelted through a closed double-cabin smelting-injection system; during spray deposition, the preheated mixed powder is loaded; performing electric arc melting to form a nano oxide dispersed phase and strictly controlling the oxygen content of the ingot blank; the ingot blank is subjected to temperature equalization before forging, and H2 / Ar mixed gas is introduced; high-temperature rough rolling and low-temperature finish rolling are adopted for hot rolling strengthening; carrying out solid solution and two-stage aging composite heat treatment; hot drawing wire forming is matched with gradient annealing and protective atmosphere; and carrying out surface treatment through pulse copper electroplating or anti-oxidation layer spraying. According to the method, alloy components and microstructures can be accurately regulated and controlled, the problems of strengthening phase distribution and machining defects can be efficiently solved, and the strict requirements for high performance and high reliability of ODS steel welding wires in the fields of nuclear reactors, aerospace and the like are met.

The invention relates to an RFID electronic tag intelligent production method and device, computer equipment and a medium. The method comprises the steps that raw material state information is acquired, and preliminary composite process parameters are calculated; acquiring real-time environment data and material characteristic data, performing parameter calculation on the real-time environment data and the material characteristic data through a self-adaptive algorithm, and adjusting preliminary composite process parameters according to a parameter calculation result; the abrasion degree of the die-cutting tool is detected through the machine vision technology, and the tool pressure is automatically adjusted based on the abrasion degree; the writing accuracy is monitored in real time, then writing parameters are adjusted, and whether the UV jet printing content meets the standard or not is detected through a machine vision algorithm; consistency detection is carried out on the written data and the jet printing content, and the uniqueness and the read-write capability of the TID are judged; and identifying the basic production label, automatically packaging the qualified label, and adjusting the packaging mode according to the label quality information to obtain a final production label. The method has the effect of improving the production efficiency of the electronic tag.