23results about How to "Realize integrated manufacturing" patented technology

The invention discloses a metal grain three-dimensional manufacturing method based on double-laser powder bed melting. The method comprises the following steps that a double-laser printing parameter and corresponding metal grain process database and a grain and part performance database are established; obtaining use performance requirements of the to-be-manufactured metal part, and obtaining grain characteristics and distribution of different areas of the to-be-manufactured metal part according to the grain and part performance database; layering and slicing the to-be-manufactured metal part to obtain a slice file; the slice file is imported into double-laser powder bed melting additive manufacturing equipment, corresponding double-laser collaborative printing process parameters are selected for different areas of the to-be-manufactured metal part according to a process database, and a printing file is formed; and the printing file is imported into double-laser same-breadth printing equipment, and the metal part to be manufactured is manufactured. According to the method, the metal grains are regulated and controlled by changing the dual-laser collaborative parameters, then integrated manufacturing of parts is achieved, and the machining difficulty is reduced while the performance of the parts is improved.

The invention relates to the field of physiological status detection, and provides a wearable microfluidic fluorescence sensor based on a Janus membrane for sweat analysis. The sensor comprises a Janus membrane-based micro-fluidic chip and a fluorescent sensing layer which are stacked, the Janus membrane-based micro-fluidic chip comprises a hydrophobic nanofiber membrane, a bottom polydimethylsiloxane layer, a hydrophilic nanofiber membrane and a top polydimethylsiloxane layer which are stacked, and the fluorescent sensing layer comprises three paper chips, the simultaneous fluorescence detection of chloride ions, glucose and pH of sweat is realized. The Janus membrane with the directional water conveying capacity is used as a substrate for preparing a micro-fluidic chip. In one aspect, sweat may be automatically delivered to an analysis zone along a designed path. On the other hand, sweat is transferred from a hydrophobic membrane close to the skin to a hydrophilic membrane, sweat accumulation is effectively avoided, and a comfortable skin microenvironment is promoted. A Janus membrane-based micro-fluidic chip is combined with fluorescence sensing, a micro-fluidic fluorescence sensor based on a Janus membrane is constructed, and simultaneous high-stability and high-accuracy analysis of multiple targets in human sweat is realized.

The invention relates to a three-dimensional network carbide reinforced refractory alloy and a preparation method thereof, and belongs to the technical field of alloy material preparation. The three-dimensional network carbide reinforced refractory alloy is composed of a BCC matrix phase and a large number of dispersed three-dimensional network carbide reinforced phases, and the crystal structure of the carbide is M2C or MC type and is in a complete coherent relationship with the BCC matrix. The method has high adaptability, the applicable refractory alloy material range is wide, particularly fine component design is not needed, the process window is wide, and operation is easy. According to the material prepared by the method, a carbide phase and a matrix are coherent, the bonding strength is high, the stability is good, and repeated thermal cycle can be endured. According to the method, integration of material preparation and component forming can be achieved, high-freedom-degree direct forming of complex three-dimensional parts is directly achieved, and the forming requirement in the actual using process can be met to a great extent.

This invention discloses a space radiating plate based on a large vapor chamber and its manufacturing method, belonging to the field of spacecraft thermal control technology. The radiating plate includes a one-piece sealed metal cavity, the interior of which is a vacuum vapor chamber. The cavity has opposing first and second sidewalls; the outer surface of the first sidewall forms a radiating surface, and the inner side of the second sidewall integrates cooling channels. A micro-pillar array structure, directly formed integrally through micromachining, is disposed on the inner wall surface of the vacuum vapor chamber, and the cavity is filled with a phase change working fluid. This invention highly integrates the vapor chamber, channels, and radiating surface, utilizing phase change heat transfer to achieve ultra-high thermal conductivity and temperature uniformity, solving the problems of low heat dissipation efficiency, anisotropy, large weight, and poor adaptability to the space environment in existing technologies. It is suitable for thermal management of high-power spacecraft such as satellites, space stations, and space data centers.

The invention discloses a micro-channel packaged thermal differential pressure and flow velocity fusion sensing array and a manufacturing method thereof, and relates to the field of sensors, the array comprises a device layer, and the device layer is provided with a plurality of flow velocity sensors and a plurality of differential pressure sensors; the upper end and the lower end, located at the differential pressure sensors, of the device layer are each provided with a pipeline layer in an overlapped mode, the pipeline layers are provided with pipelines with the same number as the differential pressure sensors, and the differential pressure sensors are located in the corresponding pipelines; a substrate layer is stacked at the bottom of the pipeline layer at the lower part of the device layer and covers the device layer; a packaging layer is stacked on the top of the pipeline layer on the upper portion of the device layer, the packaging layer covers a pipeline of the pipeline layer, pressure measuring holes are formed in the positions, corresponding to the two ends of the pipeline, of the packaging layer, and the pressure measuring holes are communicated with the interior of the pipeline. The micro-channel packaged thermal differential pressure and flow velocity fusion sensing array manufactured based on the method integrates a plurality of differential pressure sensors and a plurality of flow velocity sensors, and can be attached to the surface of the leading edge of a wing to monitor the flow velocity and differential pressure information of the wing surface.

The invention provides a pellet preparation method and a tool for pellet preparation. The preparation method comprises the following steps: mixing a powder raw material and a binder, and carrying out internal mixing and granulation to obtain a feed for powder extrusion printing; a screw system of the powder extrusion printing equipment extrudes the feed in the charging barrel into long filaments through heating and rotating, and blanks are printed on a printing panel layer by layer according to a preset printing path; the side faces of the two to-be-connected green bodies are heated, the two green bodies are in butt joint after the binders on the outer surfaces of the heating faces are melted and have cohesiveness, the two green bodies are connected together in the cooling process, and the connected green bodies are obtained; degreasing the connected green body to obtain a brown blank; and carrying out densification sintering on the brown blank to obtain the pellet. According to the method, the two to-be-connected green bodies prepared through the powder extrusion printing technology are heated and in butt joint, so that the technical problem that a long pellet is difficult to prepare through a traditional preparation method is solved.

The present invention discloses a PEM water electrolysis bipolar plate and a preparation method, which belongs to the field of water electrolysis hydrogen production. The present invention uses a stainless steel plate as a substrate, and the substrate is provided with a perforated structure that is identical to the flow channel ridge structure and corresponds to the position. The upper and lower surfaces of the substrate are provided with a titanium layer, and the titanium layer fills the perforated structure and connects the upper and lower titanium layers. The surface of the titanium layer is provided with a spherical dehydrogenation titanium powder layer and a functional coating in sequence, and the functional coating forms the flow channel ridge, spoiler column and hydrogen and oxygen frame of the bipolar plate. The pore size of the spherical dehydrogenation titanium powder layer is 100nm-10μm; the titanium layer, the spherical dehydrogenation titanium powder layer and the functional coating all contain titanium powder. The present invention can improve the conductivity of the bipolar plate under the premise of using low-cost stainless steel plates, thereby improving the overall performance of the water electrolysis bipolar plate.

The invention relates to the technical field of concrete conveying, and discloses a conveying elbow pipe and a preparation method thereof.The conveying elbow pipe comprises an outer pipe layer (4) and an inner pipe layer (2), the outer pipe layer (4) and the inner pipe layer (2) make contact with each other and form metallurgical bonding, the contact interface is of a mutually-embedded concave-convex structure, and a wear-resisting part (3) is embedded in a wear-resisting area of the inner pipe layer (2); the thickness of the wear-resisting part (3) is gradually reduced from the center to the periphery, the maximum thickness of the wear-resisting part (3) is smaller than that of the inner pipe layer (2), the inner surface of the wear-resisting part (3) is flush with the inner surface of the inner pipe layer (2), a plurality of meshes are formed in the wear-resisting part (3), and chemical components of the inner pipe layer (2) permeate into the meshes to form metallurgical bonding. According to the conveying elbow provided by the invention, the zero clearance of the elbow is fully realized, the problem of early rupture failure caused by insufficient shock resistance of the inner pipe of the elbow due to the clearance between the pipes is avoided, and the wear resistance and the shock resistance are remarkably improved.

The invention discloses a micro-nano metal structure electrofluid and electrochemical composite 3D printing method and device.The printing method comprises the steps that a non-metal micro-nozzle injected with metal ion-nanoparticle mixed liquid serves as a printing tool, and a microwire electrode connected with the positive electrode of a voltage source is inserted into the metal ion-nanoparticle mixed liquid in the non-metal micro-nozzle in a suspended mode; connecting the substrate with the negative electrode of the voltage source; the voltage source applies an electric field between the microwire electrode and the base material, and the metal ion-nanoparticle mixed liquid is sprayed out in the form of ionic liquid drops wrapping metal particles under the action of traction force of the electric field and flies to the surface to be deposited of the base material at a high speed in the direction of an electric field line; under the synergistic effect of impact self-sintering of the metal nanoparticles and oxidation-reduction precipitation of the metal ions, layered forming of the metal micro-nano structure is achieved; layer-by-layer accumulation printing of the micro-nano scale complex three-dimensional metal structure is achieved by controlling the printing distance, and high-precision, high-strength, post-treatment-free, efficient and low-cost preparation of the multi-material array structure can be achieved.

The invention discloses a high-toughness anti-ablation hafnium-tantalum-carbon solid solution ceramic-based composite material and a preparation method thereof, and mainly solves the problems of low fracture toughness and poor ablation resistance of hafnium-tantalum-carbon solid solution ceramic in the prior art. According to the scheme, mixed powder of silicon carbide whiskers, hafnium carbide and tantalum carbide is sintered to obtain the silicon carbide whisker toughened hafnium tantalum carbon solid solution ceramic-based composite material, wherein the silicon carbide whiskers are uniformly distributed in the material; the preparation method comprises the following steps: mixing and ball-milling hafnium carbide and tantalum carbide powder to obtain hafnium carbide-tantalum carbide mixed powder; performing ultrasonic dispersion on silicon carbide whiskers, and adding the silicon carbide whiskers into the mixed powder to obtain whisker-containing powder which is uniformly mixed; finally, spark plasma hot pressed sintering is adopted, the whisker-containing powder obtained in the last step is placed in a graphite mold for high-temperature sintering, and the composite material is obtained. The fracture toughness of the hafnium-tantalum-carbon solid solution ceramic and the high-temperature thermal stability of an oxidation product of the hafnium-tantalum-carbon solid solution ceramic can be improved, and meanwhile the cracking resistance and ablation resistance of the hafnium-

The invention belongs to the technical field of gold transmission part production, and particularly relates to a gold embedded transmission part and a manufacturing method thereof.The gold embedded transmission part comprises a resin mold formed through 3D printing and a conductive coating film formed on the surface of the resin mold, and a sinking groove of the part is formed in the resin mold; an electroforming structure is formed in a sinking groove in a resin mold, a part structure is formed after the electroforming structure is demolded, and the jewelry structure further comprises a jewelry body used for embedding of the part structure. The photocuring 3D printing and the electroforming technology are organically fused, and integrated manufacturing of the complex embedded transmission part with the nanoscale resolution ratio is creatively achieved. By accurately controlling the resolution ratio of 3D printing, a complex geometric structure with extremely high precision can be constructed, the functionality and integrity of transmission parts on the micron scale are ensured, and the extreme requirement for a mechanical transmission device in high-end jewelry manufacturing is met.

The invention relates to the technical field of aero-engine blade surface strengthening, and discloses a thin-wall blade surface strengthening and finishing integrated manufacturing method and a thin-wall blade surface strengthening and finishing integrated manufacturing system. And acquiring information such as an impact force signal, an impact speed signal, a stroke, an impact width, real-time position information of an impact point, surface roughness after impact, residual stress, impact deformation and the like. And a mapping model between real-time position information of the impact force signal, the impact speed signal, the stroke, the impact width and the impact point and the surface roughness, the residual stress and the impact deformation is constructed, and the surface roughness, the residual stress, the deformation result and the like of the blade are monitored in real time. And finally, the strengthening and finishing impact parameter range value of the blade to be machined is obtained through analysis, high controllable impact in the strengthening and finishing process of the blade is ensured, integrated control over strengthening and finishing of the surface of the thin-wall blade is achieved, and the bottleneck problems that in the traditional blade machining process, controllability is insufficient, and machining quality consistency is poor are solved.

The present application relates to warp-knitted fabric technical field, specifically to a kind of suspended yarn guide tension regulation and control's lace production process;A kind of suspended yarn guide tension regulation and control's lace production process, with warp knitting machine, 33dtex / 12f nylon 6 full draft silk conventional weaving yarn and dual-functional modified PVA coating liquid as basis, dual-functional modified PVA coating liquid is only functional additive medium, through the synergistic effect of dual-functional modified PVA coating, amphiphilic block copolymer micelle hygroscopic response friction activation and micro-liquid bridge capillary force, realize the local tension in-situ self-reinforcement of specified pattern area in weaving stage, realize the integration of permanent setting in the later heat setting stage;The present application systematically solves the problem of tension regulation and control in lace fabric production, such as tensioner, insufficient three-dimensional feeling of pattern and transition hard, realizes the local tension in-situ self-reinforcement of specified pattern area and permanent setting, and provides a new solution for the high value-added differentiated production of lace.

The present invention relates to the field of high-temperature conductive protective coatings, specifically a rare earth oxide-inert metal-spinel conductive composite coating and a preparation method. The conductive composite coating comprises a rare earth high-temperature oxidation resistant layer, an inert metal diffusion barrier layer and an alloy thermal conversion spinel layer. The conductive composite coating can not only improve the high-temperature oxidation resistance of the stainless steel substrate, but the inert metal diffusion barrier layer can also inhibit the mutual diffusion of elements between the substrate and the alloy thermal conversion spinel layer, thereby improving the service performance of the coating. The conductive composite coating adopts a combination of multi-target co-sputtering and thermal conversion to achieve the integrated preparation of the rare earth high-temperature oxidation resistant layer, the inert metal diffusion barrier layer and the alloy thermal conversion spinel layer.

This invention discloses a 3D printing method and apparatus for the integrated molding of heterogeneous multi-component components, specifically relating to the fields of advanced manufacturing and intelligent microsystems technology. This invention overcomes the limitations of traditional multi-material 3D printing, which can only integrate electronic components and cannot embed drivers. It employs a dual-mode embedding method combining vacuum adsorption and pneumatic gripping, achieving integrated manufacturing of micro-drivers, electronic components, high-precision conductive lines, and structural substrates. By preparing wires through mask scraping, it solves the problems of low precision and difficulty in adapting to micro-circuits in direct writing, improving interconnect reliability and miniaturization level. The direct embedding of mature drivers avoids the polarization process and performance degradation issues required for direct printing of piezoelectric materials, ensuring stable and reliable driving performance. Through in-situ wire fabrication and a closed-loop printing process, it eliminates the risk of post-assembly errors and interconnect failures.

The invention provides a novel automatic lamp pasting machine, and belongs to the field of automatic lamp pasting equipment, the novel automatic lamp pasting machine comprises a mounting plate, a plurality of working assemblies are arranged on the mounting plate, each working assembly comprises a correcting and feeding assembly, a slotting assembly, a lamp pasting assembly and a bending assembly, the tail end of the correcting and feeding assembly is connected with the slotting assembly, and the lamp pasting assembly is connected with the bending assembly. The grooving assembly is connected with the lamp pasting assembly, the tail end of the lamp pasting assembly is connected with the bending assembly, a back plate is arranged above the mounting plate, the grooving assembly and the bending assembly are mounted on the back plate, and the lamp pasting assembly is arranged on the front side of the back plate. The whole machining route is long, the guide plate is arranged on the back plate and can guide materials to be machined, the materials are prevented from deviating from the machining route, and therefore the machining precision is improved.

According to the polyolefin composition provided by the invention, polyethylene is adopted as matrix resin, and an ester comonomer is introduced in an ethylene polymerization process or an ester polymer is added in a polyethylene modification process, so that on the premise of ensuring the insulating property and the mechanical property of a material, on one hand, the surface precipitation amount of the prepared polymer composition is reduced; and on the other hand, the dosage of the cross-linking agent can be reduced, the degassing time is improved, the cost is reduced, and the method can be used for integrally preparing the high-voltage cable.

The invention discloses an integrally injection-molded shock absorber upper support embedded with pre-compression damping elements. The integrally injection-molded shock absorber upper support comprises a shell; the upper cavity is arranged at the upper end of the interior of the shell; the lower cavity is arranged at the lower end of the interior of the shell; the upper end of the vibration isolation element is arranged in the upper cavity and abuts against the inner surface of the upper cavity, the lower end of the vibration isolation element is arranged in the lower cavity and abuts against the inner surface of the lower cavity, and the vibration isolation element is connected with the upper cavity and the lower cavity; and the partition plate is arranged in the vibration isolation element. Through the application of the invention, the integrally injection-molded shock absorber upper support embedded with the pre-compression damping element is provided; the problems that an upper support of a welding plastic shock absorber widely used at present is prone to being insufficient in structural strength, product performance fluctuates along with the welding state, noise is caused, the durability of an inner core is reduced, and production and quality control equipment is expensive are solved.

The application belongs to the technical field of biomedical ceramic materials, and particularly relates to an inkjet 3D printing zirconia ceramic product with an intrinsic hydrophilic surface and a preparation method and application thereof. The preparation method of the inkjet 3D printing zirconia ceramic product provided by the application realizes extreme grain refinement of the zirconia ceramic, micro-strain introduction and generation of a trace amount of monoclinic phase by optimizing ink components, printing parameters and debinding and sintering processes, so that high surface energy and hydrophilic properties are obtained. The product exhibits excellent cell compatibility, immune regulation properties and soft and hard tissue integration ability without any subsequent surface modification treatment.

The invention discloses a preparation method of a high-temperature-resistant supercapacitor based on GaN as an electrode material, and mainly solves the problem of complex electrode preparation process in the prior art. According to the implementation scheme, photoetching is carried out on a target substrate to obtain a patterned photoresist-target substrate structure, and a layer of metal current collector is deposited on the patterned photoresist-target substrate structure; performing photoresist stripping treatment on the sample of the current collector / photoresist-target substrate, performing secondary photoetching to form a photoresist-current collector-target substrate structure, performing ICP etching on the photoresist-current collector-target substrate structure, and patterning the target substrate to obtain required positive and negative electrode regions; and carrying out photoresist stripping and annealing on the patterned photoresist-current collector-target substrate sample to obtain a patterned current collector-target substrate sample, and packaging the patterned current collector-target substrate sample by using a layer of polydimethylsiloxane film to complete the preparation of the micro supercapacitor. The complexity and the cost of electrode preparation are reduced, the production efficiency is improved, large-scale production can be realized, and the method can be used for electronic equipment in a high-temperature environment.

The utility model relates to the technical field of preparation electrolyte membrane, especially a kind of extrusion flat plate coating equipment for preparing solid electrolyte membrane, including equipment main body, equipment main body is equipped with slurry supply unit, extrusion coating unit, gauge control system, multistage drying unit and peeling and winding unit, slurry supply unit is set to one side of extrusion coating unit, the screw pump of slurry supply unit is communicated with the coating die of extrusion coating unit, multistage drying unit is set to the discharge side of extrusion coating unit, the gauge probe of gauge control system is set in multistage drying unit inside, peeling and winding unit is set to the discharge side of multistage drying unit.The utility model can realize the continuous, efficient, stable production of solid electrolyte membrane, the prepared membrane piece uniformity, no defect, high density, and excellent mechanical property.

The application relates to the field of 3D printing technology and discloses a functional gradient material light-curing 3D printing device which comprises a processing platform, a material conveying device, a printing device, a laser positioner, a material layering device, a positive pressure air path device and a controller. First, the functional gradient material is laid by the material layering device, is conveyed to the lower side of the printing platform by the material conveying device, is pre-light-cured, and then is recycled to print the next layer, and is solidified, so that the material transition problem in the printing process of multiple photosensitive materials can be solved, and the precise, integrated and efficient manufacturing of the functional gradient material structure can be realized.

The present invention discloses a hierarchically porous CO2 adsorption material and a preparation method thereof. The hierarchically porous CO2 adsorption material is prepared by photocuring 3D printing a photosensitive resin made of a photopolymerizable ionic liquid monomer, an amino-containing comonomer, a multi-functional crosslinking agent, a non-reactive pore-forming agent, etc., and then removing the pore-forming agent by supercritical drying. The present invention realizes the molecular-level uniform distribution of amino active sites, avoids the defects of traditional post-modification processes, and successfully constructs a multi-level pore structure conducive to gas mass transfer by combining polymerization-induced phase separation and supercritical drying. The prepared material has excellent CO2 adsorption performance and cycle stability, with an adsorption capacity of 4.5 mmol / g at 25 °C and 0.1 MPa, and a performance retention rate > 95% after 5 cycles.