13results about How to "Solve molding problems" patented technology

The invention discloses a preparation method of a graphene reinforced metal-based composite material and a wire, and belongs to the technical field of material preparation. According to the preparation method, the graphene powder and the metal powder are effectively mixed, so that the problems that graphene agglomerates and metal is not easily dispersed are solved, and then the graphene metal composite powder is subjected to continuous extrusion treatment; the continuous powder metallurgy forming process of pure metal powder and graphene metal composite powder can be achieved by regulating and controlling the extrusion technology, tight combination between metal and metal powder and tight combination between metal powder and graphene are achieved, and therefore the potential of high strength and high electric conduction and heat conduction of graphene is effectively exerted. And the comprehensive improvement of the mechanical property and the electric conduction and heat conduction properties of the graphene reinforced metal-based composite material is realized.

According to the method, phosphate concentrate is used as a main material, a compression molding agent and a roasting auxiliary are used as auxiliary materials, and the bulk purified phosphate concentrate is prepared through material mixing, standing, scattering, aging, compression molding, drying and roasting in sequence. A compression molding process is adopted, the addition amount of water in the material is accurately controlled, an auxiliary material compression molding agent is introduced, it is guaranteed that the material has enough plasticity and is smoothly pressed and molded, meanwhile, a roasting auxiliary agent is introduced in a targeted mode, the compact block phosphate concentrate with certain hardness is obtained, the sintering vitrification temperature is effectively reduced, and the quality of the product is improved. Release, purification and utilization of fluorapatite in the phosphate concentrate are achieved to the maximum extent, a theoretical basis is provided for large-scale production, and the method is suitable for the field of ore utilization.

According to the technical scheme, the manufacturing method of the aluminum nitride high-temperature co-fired ceramic tube shell comprises the steps that an upper part and a lower part of a green ceramic chip subjected to hole filling printing are laminated in a segmented mode, the upper part is the thickness of a boss, and the lower part is the thickness of a base; generating the appearance of the platform and a circle of blank outside the platform on the blank laminated on the upper part of the green ceramic chip, punching an electrostatic film, removing the electrostatic film in the middle of the platform, and carrying out secondary lamination and hot pressing on the base part of the blank of the green ceramic tape, the processed whole electrostatic film with the cavity, the platform part and the blank outside the platform on a lamination plate to obtain the green ceramic tape. And taking off the green body and the electrostatic film outside the platform from the laminated green ceramic block to obtain the green body of the product, and sintering the green body of the product to obtain the aluminum nitride high-temperature co-fired ceramic tube shell. According to the invention, the manufacturing of the isolated platform is realized by adopting a laminating method of combining the electrostatic film and the raw ceramic block, no connecting lappets need to be added, and the appearance of the ceramic is not influenced.

The invention relates to the technical field of composite material thin film manufacturing, and discloses a high-performance composite material thin film manufacturing and using method.The high-performance composite material thin film manufacturing and using device comprises a bottom plate, a forming box and a bearing plate, and a post-processing mechanism is arranged on the upper surface of the bottom plate; and the post-processing mechanism comprises a U-shaped frame, a bearing seat, a second servo motor, a first gear plate, a second gear plate, a first connecting rotating rod, a belt, a second connecting rotating rod and a second leveling roller, and the bottom of the U-shaped frame is fixedly connected with the upper surface of the bottom plate. According to the manufacturing and using method of the high-performance composite material film, by using a U-shaped frame, an inserting plate, an electric push rod, a sleeve shaft and a winding roller, the effect of winding the high-performance composite material film after the high-performance composite material film is wound by the winding roller can be achieved; therefore, the problem of how to flatten, cool and wind the formed film through a group of structures is solved, and the effect of reducing the use of equipment components can be achieved, so that the complexity of operation can be reduced.

The invention relates to a metal plate positioning and forming tool which is mainly composed of a base body, a movable positioning block, a check block, a fixed column body, a rotating column body, a transition connecting block and the like. The base body is a plate with two concentric lug plates and a plurality of threaded holes; the positioning movable block is a long strip with a U-shaped groove and is fixed on the base body through a bolt; the stop blocks are cuboids with different lengths and can be used for positioning during part forming; the fixed column body is formed by processing round steel and is matched with the lug plate hole of the base body; the rotating column body is similar to the fixed column body and is matched with the transition connecting block; the transition connecting block is similar to a chain joint in shape, and two unthreaded holes are machined in the transition connecting block and used for installing the fixed column body and the rotating column body respectively. The mechanism is mainly used for bending and forming of sheet metal parts, positioning and layout of related structures are reasonable, the mechanism is suitable for forming and manufacturing of products, multiple times of bending of different shapes can be completed, and the part forming efficiency is improved.

The invention relates to the field of powder metallurgy and additive manufacturing. Specifically, the invention provides titanium carbonitride-based metal ceramic powder capable of being used for 3D printing and a preparation method of the titanium carbonitride-based metal ceramic powder. The invention further provides a binder spraying 3D printing method for preparing a titanium carbonitride-based metal ceramic formed part from the titanium carbonitride-based metal ceramic powder and the prepared titanium carbonitride-based metal ceramic formed part. The titanium carbonitride-based metal ceramic powder disclosed by the invention can be molded into a metal ceramic molded part with a complex shape and excellent mechanical properties by utilizing a binder jet printing technology. By regulating and controlling a material system and curing and sintering densification process parameters, metal ceramic materials and parts with different mechanical property intervals can be obtained so as to be matched with various properties and application requirements.

The utility model provides a large round can groove body edge rolling tool, which relates to the field of industrial equipment manufacturing process, and comprises a forklift support, a supporting support is arranged above the forklift support, the supporting support comprises a vertical support, the bottom end of the vertical support is fixedly connected with the top end of the forklift support, and the bottom end of the vertical support is fixedly connected with the top end of the forklift support. The top end of the vertical support is fixedly connected with the lower portion of the first end of the horizontal support, the lower portion of the second end of the horizontal support is fixedly connected with the upper end of the oblique beam, the lower end of the oblique beam is fixedly connected with the lower end of the vertical support, and a plurality of pulley supports are arranged above the second end of the horizontal support. A pulley is rotationally mounted on each pulley bracket through a connecting assembly; according to the utility model, the deformation of the round can main body caused by self pressure in the plate rolling process is avoided, the forming of the round can is solved, and the difficulty of a later welding process is reduced.

A method for preparing a transmission electron microscope sample of magnetic powder particles belongs to the technical field of transmission electron microscope sample preparation, and comprises the following steps: embedding magnetic powder particles in a transmission electron microscope sample support net, further fixing them with a special resin for ion thinning, respectively arranging thin film materials on the upper and lower layers, applying pressure with a clamp, making the special resin for ion thinning evenly distributed, completely wrapping the transmission electron microscope sample support net and the magnetic powder particles, exhausting the existing air, heating and heat preservation and then cooling, taking out the support net, preparing a thin area, and obtaining a transmission electron microscope sample of magnetic powder particles. The present invention can make the magnetic powder particles be subjected to transmission electron microscope microstructure observation, ensure that the magnetic powder particles can be stable and immobile under high-intensity magnetic field conditions, and make transmission electron microscope observation of the microstructure of the magnetic powder particles possible.

The invention discloses R-T-Si alloy particles, R-T-Si secondary alloy particles and a preparation method and application of the R-T-Si alloy particles and the R-T-Si secondary alloy particles. In the R-T-Si alloy particles, the atomic ratio of the R to the'T and Si 'is (1-1.1): (13-15.5); the atomic ratio of the T to the Si is (4.4-30): 1; wherein R is one or more of rare earth metal elements; t is one or more of iron, manganese, cobalt, nickel, copper, titanium, vanadium and chromium; the average particle size of the R-T-Si alloy particles ranges from 10 micrometers to 1000 micrometers. The R-T-Si alloy particles have the advantages of being high in sphericity degree, smooth in surface and free of obvious defects, and have good magnetocaloric performance when being applied to the field of solid refrigeration.

The present application relates to a kind of high-pressure turbine guide vane, and specifically relates to a kind of preparation method of ceramic matrix composite multi-cavity structure high-pressure turbine guide vane.Solve the technical problems that ceramic matrix composite high-pressure turbine guide vane component forming is difficult, blade component size difference and pre-embedded split joint model is easy to be bonded with blade.The method of the present application comprises the following steps:1) preparing upper edge plate component preform, lower edge plate component preform and blade body preform;2) preparing boron nitride interface layer for each preform respectively;3) preparing SiC matrix for each preform respectively, during the densification process of blade body preform, new graphite tooling and graphite paper pad are used at split joint structure for each furnace deposition;4) preparing self-healing matrix for each preform respectively;5) processing each component;Installing inner core baffle and multiple spoiler columns;Online assembly of each component, deposition and processing obtain turbine guide vane.

The application provides a monocular video-based motion capture optimization method and a model training method, and relates to the technical field of computers. The monocular video-based motion capture optimization method comprises the following steps: inputting a monocular video into a touch-down detection model to obtain a touch-down detection result for indicating a touch-down probability of a portrait foot; obtaining three-dimensional motion first data of the portrait according to the monocular video, and then obtaining a foot trajectory of the portrait; performing touch-down optimization on the foot trajectory according to the touch-down probability, and performing jitter optimization on the touch-down optimized foot trajectory; and reconstructing the three-dimensional motion first data through a reverse dynamics algorithm according to the jitter optimized foot trajectory to obtain three-dimensional motion second data of the portrait. The method of the application solves the problem that the accuracy of three-dimensional motion data reconstructed through a reverse dynamics algorithm is reduced due to the possible penetration and jitter of the portrait foot in the three-dimensional reconstruction process.

The invention discloses a hollow product with a microporous wall, a large number of micropores are formed in the wall part and the bottom of the hollow product, the micropores are uniform in size, and the diameter of the micropores is within 150 microns; and the inner and outer wall surfaces of the wall part and the bottom part are of solid structures. The invention also discloses a preparation method of the hollow product with the microporous wall, which comprises the following steps: (1) preparing a foaming master batch: uniformly mixing the pretreated foaming agent, nano nucleating agent, dispersing agent, activity regulator and matrix resin, and preparing the foaming master batch through a plastic extruder; (2) melting, extruding and pelletizing the dried plastic raw material through a plastic extruder to form a main material of a to-be-molded hollow product; (3) adding the foaming master batch in the step (1) into the main material in the step (2), and uniformly mixing to form a mixed material; (4) the mixed material is subjected to a heating gas release experiment, a gas release time curve of the mixed material at the corresponding temperature T is determined, and characteristic values of the curve comprise peak time tP, starting time tS and ending time tE; (5) based on the gas release time curve obtained in the step (4), the mixed material is added into a three-in-one injection-blow molding machine provided with a bottle blank mold and a bottle blowing mold, in the injection-blow process, the highest temperature of a charging barrel of the injection-blow molding machine is set to be T, and the time interval between the time when the mixed material enters the charging barrel of the machine from a hopper and the time when the melt starts to be blown is between tS and tP; a hollow product with a microporous wall is obtained.

The application provides an aerogel composite material for 3D printing and a preparation method thereof, and the preparation method comprises the following steps: S1, a base material is vacuum dried to obtain a pre-dried base material, the pre-dried base material is premixed with a foaming agent at a low speed for 5-15 min, and the pre-mixed material is sent into a double-screw extruder to be extruded and granulated to obtain granules one; S2, the granules one are frozen and crushed at a low temperature and sieved to obtain pre-foaming master batches; S3, the pre-foaming master batches, aerogel powder, white oil and a dispersing agent are added into a mixer, stirred at a low speed for 3 min, heated, stirred at a high speed for 15-20 min, and discharged to obtain powder mixtures; S4, the powder mixtures and a foaming agent two are sent into a double-screw extruder to be extruded and granulated to obtain granules two; S5, the granules two are added into an extruder to be melt-extruded to obtain a wire; and S6, the wire is cooled and wound in a constant-temperature environment at 25 DEG C, and vacuum packaged to obtain the aerogel composite material for 3D printing. The aerogel composite material prepared by the application has good heat insulation performance and can meet the personalized manufacturing requirements of complex shapes.