53 results about "Metal lattice" patented technology

A paddle includes a core and at least one metallic lattice structure coupled to the core.

The invention discloses a high-adhesiveness corrosion-resistant powder coating and a preparation method thereof, and belongs to the technical field of coatings. The powder coating is prepared from the following raw materials: modified epoxy resin, composite modified filler, a curing agent, a flatting agent, a dispersing agent, benzoin, sodium fluoride and the like. The epoxy resin is modified, amino is introduced to enhance the interaction with the grafted phosphate nano-silica, and BYK-163 is introduced, so that the compatibility is improved. In the composite modified filler, nano silicon dioxide A is grafted with a phosphate group, and can form a chemical bond with metal and quickly form a passive film; the nano silicon dioxide B is grafted with a fluorine-containing group, so that the coating is endowed with low surface energy and chemical stability, and long-acting protection is realized. Sodium fluoride destroys metal lattices at high temperature to form anchor points, and adhesive force is improved. The problem that a traditional powder coating is insufficient in adhesive force and corrosion resistance is solved, and the powder coating is suitable for metal protection in various complex environments and has wide application prospects.

Inventive techniques for forming unique compositions of matter are disclosed, as well as associated physical characteristics and properties of the materials. In particular, particles comprising a metal lattice are characterized by having carbon (preferably graphene) disposed within the crystalline lattice structure thereof. The carbon is at least partially disposed in interstitial sites of the metal lattice, and may be present in amounts ranging from about 15 wt % to about 90 wt % of the total particle mass, with about 15 wt % to about 60 wt % being disposed in the interstitial sites, e.g., between basal planes, of the metal lattice. The carbon, moreover, is substantially homogeneously dispersed throughout the resultant material, conveying unique and advantageous properties such as strength-to-weight ratio, density, mechanical toughness, sheer strength, flex strength, hardness, anti-corrosiveness, electrical and / or thermal conductivity, etc. as described herein. In some approaches, the graphene is pristine, and has corresponding physical characteristics as described herein.

The invention provides a method and a device for testing hydrogen doping of a buried steel pipe under a cathode protection condition. The method and the device solve the technical problem that an internal hydrogen permeation-external hydrogen adsorption synergistic effect mechanism faced by a buried pipeline cannot be reflected in an existing test. The method comprises the following steps: establishing a dual test environment under a cathode protection condition, forming a control group and an experimental group of a corrosion test piece to be tested, deploying the control group in a single soil environment, and deploying the experimental group in internal and external hydrogen environments; the power-on potential and the power-off potential are continuously monitored in the dual test process; quantitative comparison of key parameters of the control group and the experimental group is formed according to the double test periods; and constructing a multiple regression model according to the key parameters in combination with potential correction data to quantify the correlation between the corrosion rate and the hydrogen embrittlement sensitivity. The double-environment coupling effect in the actual operation of the pipeline is synchronously simulated, and the diffusion path difference of hydrogen atoms in metal lattices and the influence of double-environment superposition on the corrosion rate are more truly reflected.

The present application relates to the technical field of power hardware processing and manufacturing, and particularly relates to a cross arm production process. The process comprises: after a fluid-incompressible pressure-maintaining rigid boundary is constructed by pressing a main hydraulic cylinder, starting a microseismic device to directionally inject high-frequency mechanical microseismic kinetic energy into the cross arm; synchronously extracting a back pressure feedback value in a sealed loop and monitoring a dynamic attenuation slope thereof in real time; when the slope is detected to be flat and to be in an attenuation stagnation of internal stress release, under a timing safety interlock protection mechanism for executing confirmation of mechanical wave calming, triggering a high-frequency electrically-controlled proportional overflow valve to execute millisecond-level transient micro-pressure relief and extremely fast pressure reconstruction, so as to provide a transient volume yielding space for metal lattice rearrangement; and finally completing final state confirmation when the absolute value of the back pressure is stabilized at a zero rebound threshold. The present application can solve or at least alleviate the secondary rebound problem caused by lattice distortion residual strain energy accumulation in the forming of thick-walled metal components, and improve the production quality of the cross arm.

The invention discloses an aluminum-based conducting bar surface functional layer and a preparation system and process thereof. The preparation process comprises the following steps: substrate pretreatment: removing surface pollutants through ethanol ultrasonic cleaning; preparing a transition layer: performing cold solid deposition on the copper-based composite powder to form the transition layer; functional layer cold spraying: constructing a functional conductive layer on the surface of the transition layer; preparing an anti-corrosion layer: constructing a composite protection system on the surface of the functional conductive layer; densification treatment is conducted, specifically, hole sealing densification treatment is conducted on the surface of the anti-corrosion layer; and detecting the quality of the coating. The functional layer comprises an aluminum-based layer, a copper metal transition layer, a nickel-based or tin-based conductive layer and an anticorrosive layer. By adopting the process, the equipment investment can be saved, the processing time can be saved, the metal lattice distortion can be effectively realized, the accurate control of the dislocation density of the material surface can be realized, the specific strength of the conducting bar material can be improved, and the light weight of the conducting bar can be realized.

The invention discloses a method for effectively reducing adsorption and accumulation of tritium on the wall of an ionization chamber. A non-metal hydrophobic coating is deposited on the surface of the wall of the ionization chamber. At present, the ionization chamber wall is mainly made of a metal material, tritium atoms enter metal lattices to accumulate, and therefore the tritium memory effect is caused, a layer of dense, uniform and firmly-combined hydrophobic coating is deposited on the chamber wall, and adsorption and accumulation of tritium on the chamber wall can be effectively reduced.

The invention discloses copper alloy powder and a method for conducting printing repair on an aluminum bronze workpiece through the copper alloy powder, and belongs to the technical field of alloys and repair of the alloys. The alloy comprises 25-32% of Ni, 12-17% of Co, less than or equal to 1.8% of Mn and less than or equal to 2% of Si. O is less than or equal to 0.03%, and the balance is Cu. By preferably increasing the contents of Ni and Co elements, the wear resistance of the repaired surface and the bonding performance between the matrix and the additive repair layer are improved while the safety in the large-batch preparation and use process of the powder is ensured. The proportion of nickel and cobalt in the alloy is increased, the strength and hardness of the copper alloy can be improved, the nickel and the cobalt hinder dislocation movement in metal lattices through different micromechanisms, in other words, the nickel plays a role through solid solution strengthening, and the cobalt plays a role through precipitation strengthening.

The invention discloses a preparation method of a GaN single crystal film on a high thermal conductivity substrate, and belongs to the field of semiconductor film materials. Two-dimensional boron nitride is introduced as a functional layer, and low-temperature nucleation and high-temperature epitaxy processes are combined, so that high-quality combination of the single-crystal AlN transition layer with metal lattice polarity and the heat dissipation substrate is realized, the interface thermal resistance brought by a traditional bonding technology is effectively reduced, and the overall heat dissipation efficiency is improved; by means of the AlON lattice polarity inversion layer and the regrowth process, controllable conversion from nitrogen lattice polarity to metal lattice polarity is successfully achieved, the component gradual change structure and the dislocation filtering layer design are combined, the dislocation density in the thin film is remarkably reduced, and the crystallization quality of the material is improved. The method has the advantages of low epitaxial structure complexity, low process difficulty and clear and controllable process path, and is suitable for large-scale preparation. The method has important application potential in the high-end technical fields of electric automobiles, efficient energy conversion, advanced display, communication systems and the like.

The invention relates to a metal dot matrix 3D printing system and method based on electromagnetic-thermocompression coupling adsorption. The invention relates to the technical field of metal additive manufacturing, in particular to a 3D printing system integrating imprinting welding adsorption characteristics and hot-pressing deposition, and is suitable for high-precision scenes such as microelectronic devices and space on-orbit manufacturing. The technical problems that due to the fact that traditional metal 3D printing depends on gravity powder laying, the microstructure precision is low (gt; 100 microns), and the welding process and the printing process are separated are solved.

The invention discloses an assembly type double-layer cambered-surface metal dot matrix sandwich panel concrete member which comprises a double-layer cambered-surface metal dot matrix sandwich panel and concrete filled in the double-layer cambered-surface metal dot matrix sandwich panel, and dovetail mortises and tenons are manufactured in the middles of the two axial sides of the double-layer cambered-surface metal dot matrix sandwich panel respectively. Mortises and tenons are manufactured in the middles of the upper end face and the lower end face of the double-layer cambered surface metal dot matrix sandwich panel in the circumferential direction respectively, the cambered surface perimeter of the double-layer cambered surface metal dot matrix sandwich panel concrete member is determined according to the fact that a whole circle with the same radius is equally divided into a plurality of parts, and the dovetail mortises and tenons on the side faces of the double-layer cambered surface metal dot matrix sandwich panel concrete member are spliced into a whole cylinder. According to the double-layer cambered surface metal dot matrix sandwich panel concrete member, the structure is simple, on-site welding, steel bar binding and concrete pouring are not needed, staggered joint assembling construction is convenient and fast, installation is rapid and efficient, and the construction efficiency is improved. The connection strength is high, and stress is continuous and reliable.

The invention relates to the technical field of high-speed rail wheel dehydrogenation, and discloses a high-speed rail wheel dehydrogenation heat preservation furnace based on the vibration effect, a bottom plate is fixed at the bottom of a furnace body, a vibration exciter used for providing a vibration source is fixed at the top of the bottom plate, a vibration table is arranged at the top of the vibration exciter, and a high-speed rail wheel body is placed at the top of the vibration table; a cover plate is arranged at the top of the furnace body, a nut is fixed to the center of the cover plate, an annular frame is fixed to the bottom of the cover plate, and a clamping groove is formed in the outer side of the top of the annular frame. The hydrogen removal agent is added into the high-speed rail wheel main body, so that the binding energy of hydrogen in metal is reduced, the hydrogen escapes from metal lattices more quickly, the hydrogen removal efficiency is greatly improved, the breakage hidden danger caused by the hydrogen embrittlement problem of the high-speed rail wheel main body is effectively reduced, and the safety of the high-speed rail wheel main body during high-speed operation and long-period use is improved.

The invention discloses a preparation method of an etching solution, a photovoltaic printing screen and an etching preparation method thereof, and the preparation method of the etching solution comprises the following steps: under a preset stirring condition, mixing deionized water with tallow alkyl propane diamine, and stirring to a uniform state to obtain a target solvent; sequentially adding nitric acid, hydrofluoric acid and phosphoric acid into a target solvent according to a first preset mode to obtain a first solution; according to a second preset mode, at least one corrosion-resistant additive is added into the first solution, and a second solution is obtained; and according to a third preset mode, a lattice refiner is added into the second solution, and the etching liquid is obtained. According to the technical scheme, it can be guaranteed that the thinned screen has high-precision surface quality, it is guaranteed that the metal lattice size of the thinned screen is refined, the material advantages of stainless steel such as 304 stainless steel are fully played, the tensile strength and corrosion resistance of the screen are improved, and the service life of the screen is prolonged.

The utility model discloses a UHPC and honeycomb bridge pier composite ship collision prevention device which comprises an anti-collision box, an assembly inner cavity for containing an energy dissipation structure is formed in the anti-collision box, a steel lattice for dividing the inner space of the assembly inner cavity is arranged in the assembly inner cavity, and aluminum honeycomb plates connected in series and in parallel are arranged in the steel lattice. The steel lattice and the aluminum honeycomb plate form a combined energy dissipation structure. According to the series and parallel aluminum honeycomb plate-steel lattice combined structure, the defects that a single honeycomb structure is small in size and low in total energy consumption are overcome, and the high energy absorption efficiency of the honeycomb structure and the unbalance loading resistance of a metal grid structure are coupled; and the energy absorption effect on anti-collision scenes caused by different ship tonnages, different ship bow shapes and different collision directions and angles is good. According to the utility model, a series and parallel aluminum honeycomb panel-steel lattice combined structure is adopted as an energy dissipation structure, and the structure is stable in failure mode, strong in energy dissipation capacity, clear in force transmission path and controllable in design under dynamic impact compression.

The present invention provides a simulation prediction method for the melting and ablation depth of metals processed by femtosecond lasers. According to the energy transfer process from laser photons to metal electrons and then to metal lattices in the processing of metal materials by femtosecond lasers, a dual-temperature equation model is constructed to simulate and calculate the temperature evolution of electrons and lattices of metal materials during processing. Based on the simulation results of temperature evolution, the melting process of metal materials is simulated by phase change fractions, and the melting and removal of materials during the processing are predicted by critical temperature judgment. The present invention can avoid the need to determine the melting depth and ablation depth of metal materials processed by femtosecond lasers through repetitive experiments. The simulation results can also guide the selection of laser parameters in the processing process, thereby reducing experimental costs and improving processing efficiency. Therefore, it has guiding significance for the practical process of femtosecond laser processing of metal materials.

The invention relates to the technical field of metal material surface treatment, in particular to an automatic metal material surface treatment device which comprises an outer frame, an outer cavity and an inner cavity are formed in the outer frame, a fixing frame is fixedly mounted on the inner wall of the inner cavity, and a treatment frame is arranged above the fixing frame. And a grinding assembly is arranged at the bottom of the treatment frame, a cooling assembly is arranged in the inner cavity, a second electrode is fixedly installed on the inner wall of the treatment frame, and a plurality of spraying holes are formed in the bottom of the treatment frame. The low-temperature plasma is sprayed to the surface of the metal plate, the temperature of the surface of the metal plate and the temperature of a polishing area are effectively controlled, deformation or surface quality problems of the metal plate caused by overheating are prevented, polishing and plasma treatment are combined, surface pollutants can be effectively removed, and the polishing effect is good. In addition, a passivation layer on the metal surface can be broken through plasma bombardment, fresh metal lattices are exposed, more active sites are provided, and a foundation is laid for subsequent nitriding treatment.

1. The name of the product of this design: mobile phone case (metal lattice armor fine hole case). 2. Purpose of this design product: to protect mobile phones. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

Metal(s) (including various alloys, such as INCONEL® superalloys) are characterized by having carbon disposed within the metal lattice structure thereof. The carbon is primarily, or entirely, present at interstitial sites of the metal lattice, and may be present in amounts ranging from about 1.5 wt % to about 90 wt %. Carbon may be present in the form of graphene, which may be characterized as one or more coherent, planar layers of graphene. The carbon, moreover, forms non-polar covalent bonds with both metal atoms of the lattice and other carbon atoms present in the lattice. This facilitates substantially homogeneous dispersal of the carbon throughout the resultant material, conveying unique and advantageous properties such as strength-to-weight ratio, density, mechanical toughness, sheer strength, flex strength, hardness, anti-corrosiveness, electrical and / or thermal conductivity, etc. as described herein. In some approaches, the composition of matter may be powderized, or the powder may be pelletized.

The invention relates to a double-site substituted bismuth-based oxyhalide solid solution as well as a preparation method and application thereof. The structural formula of the solid solution is Bi < 2 > Y < 1-x > Gd < x > O < 4 > Cl < 1-y > Bry, wherein x is greater than or equal to 0.1 and less than or equal to 0.9, 0 lt; y < lt >; 1; the preparation method comprises the following steps: modifying Bi2YO4Cl, carrying out controllable partial substitution on a metal lattice site (Y3 +) by using a specific metal cation (Gd < 3 + >) and carrying out controllable partial substitution on a halogen lattice site (Cl-) by using a specific halogen anion (Br-) at the same time to construct a double-site substituted solid solution, and carrying out collaborative optimization on charge separation efficiency and water oxidation performance of the material by using double-site partial substitution. The preparation method provided by the invention provides reliable technical support for industrial application of the Bi2YO4Cl-based photocatalytic material.

The invention belongs to the technical field of surface plasmons, and discloses a low-loss SPP design method based on anisotropic stretched metal. The loss is accurately regulated and controlled through electron density dilution in different directions inside and outside the plane, so that the previous thought of reducing the electron body density of the material does not need to be continued. The theoretical limit of the waveguide loss of the SPP provided by the invention can be reduced to 50% of the original unstretched crystal lattice; according to the invention, the high-index single crystal copper can be used as a representative of an anisotropic stretching metal system, the restriction of a conventional metal lattice with a low-index crystal face exposed is broken through a pre-oxidation-reduction method, the copper single crystal with the high-index crystal face exposed is prepared, and relatively stable Cu (332) is taken as an example to prove that the dielectric imaginary part of the copper single crystal is lower than that of precious metal Ag of the same type, so that the copper single crystal with the high-index crystal face exposed is prepared. And the method can be compared with the lowest-loss alkali metal Na measured in the current experiment. In addition, periodic coupling grating structure design is carried out on Cu (332) to achieve SPP excitation, and the near-infrared propagation length of the Cu (332) can be measured to reach the hundred-micron level.

A liquid transport and storage container and method for modifying a transport and storage container having a pallet-type understructure for a plastic inner container having a closeable filling nozzle on an upper bottom and a discharge nozzle on a lower section of a lateral wall with a dispensing fitting and a lattice jacket having horizontal and vertical metal lattice struts for receiving the inner container, ends of the vertical lattice struts having a hollow profile welded to lower and upper circumferential edge profiles of the lattice jacket, vertical lattice rods on opposite lateral walls connected by a traverse rod with a hollow profile extending across the upper bottom, a web extending vertically with a through opening formed therein molded on the upper bottom, the traverse rod extending through the through opening. A filling element is in a movement-free space between the through opening and the traverse rod.

A hollow metal lattice viscoelastic structure utilizing viscous fluid within a cavity and its preparation method are disclosed, relating to the fields of 3D printing and metallized lattice materials. This invention solves the problem of easy aging and failure of existing viscoelastic materials. Each lattice unit (A) of this invention includes a hollow substrate, on which metallization is performed by chemical plating to form a metal lattice unit; multiple lattice units (A) are interconnected to obtain a hollow metal lattice structure. This hollow metal lattice structure is a piston-shaped or spherical shell-shaped cavity or a composite lattice structure with a spring. During compression, the viscosity is provided by the fluid within the cavity, and the viscoelastic properties are formed by the elasticity of the metal substrate. Step 1: Design the lattice structure; Step 2: The hollow metal lattice structure has a piston-shaped or spherical shell-shaped cavity and a spring structure. During compression, the viscosity is provided by the fluid within the cavity, and the viscoelastic properties are formed by the elasticity of the metal substrate. This invention is used in impact-resistant and vibration-damping environments.

The present disclosure relates to the technical field of aerospace, and discloses a hybrid structure connecting piece for connecting between rocket engine components, which comprises a metal frame, a metal load-bearing structure in the cavity, a metal lattice structure filled in the gap between the metal load-bearing structure and the cavity, and a damping structure filled in the pores of the metal lattice structure. The metal load-bearing structure is made of metal, which can improve the carrying capacity of the connecting piece. The metal lattice structure can reduce the weight of the structure compared with the complete metal structure. The filled damping structure can absorb energy and play a buffering and damping effect. The hybrid structure connecting piece can realize weight reduction and vibration reduction at the connection between the rocket engine components.

The application belongs to the technical field of two-dimensional material preparation, and particularly relates to a method for preparing a multilayer single-crystal graphene film based on a hot-pressing process. Solid carbon material is attached to a single-crystal metal foil substrate, and hot-pressing is performed in a protective gas atmosphere containing a reducing gas to obtain a multilayer single-crystal graphene film. The application uses a single-crystal metal foil as a substrate and solid carbon material as a carbon source to construct a growth model of solid carbon source dissolution-metal mass transfer-surface precipitation, and uses hot-pressing to pyrolyze the carbon source to generate carbon atoms, form a solid solution with the single-crystal metal foil, and use the potential energy difference of the carbon atoms on both sides of the single-crystal metal foil to realize directional transmission of the carbon atoms in the metal lattice and ordered precipitation and growth on the surface to obtain a multilayer single-crystal graphene film with uniform and controllable layers. The method has strong controllability, is easy to implement on a large scale, and provides a new approach for efficient preparation of multilayer single-crystal graphene films.

This invention relates to a programmable thermal protection ceramic-metal lattice superstructure for spacecraft in extreme space environments, belonging to the field of spacecraft thermal protection technology. It comprises multiple body-centered cubic lattice cells arranged periodically in three-dimensional space to form an isotropic three-dimensional network structure. Each body-centered cubic lattice cell includes eight lattice connecting rods, which are rod-shaped structures. The eight connecting rods intersect at a central point, and any two adjacent connecting rods have the same angle relative to the central point, forming a cubic unit configuration body-centered cubic lattice cell. This invention solves the problem of traditional thermal protection structures failing to simultaneously address heat dissipation capacity and thermal shock protection, providing an innovative solution for thermal protection of spacecraft in extreme space environments.

The invention relates to the technical field of metal structure manufacturing and machining equipment, and discloses a steel structural component welding deformation correcting device which comprises a base, a conveying roller set is arranged on the upper portion of the base and used for supporting a lower flange plate of a steel structural component and driving the steel structural component to move along a correcting path, and a synchronous lifting frame is arranged on the outer side of the base and used for lifting the steel structural component. The two lifting ends of the synchronous lifting frame are symmetrically arranged on the two sides of the base, the two lifting ends of the synchronous lifting frame are each provided with a lower supporting assembly, the lower supporting assemblies are used for supporting the lower surface of an upper flange plate and a web plate of a steel structure component, and the top end of the synchronous lifting frame is fixedly connected with a cross beam; and a divergent pulse correction assembly is arranged on the cross beam. A high-frequency excitation system is integrated in the split type roller, metal lattices are softened through the acoustic plastic effect excited by high-energy ultrasound or high-frequency vibration, and the device can achieve large-amplitude plastic deformation only through small mechanical pressing force.

This invention discloses an integrated die-casting machine for aluminum alloy vehicle frames, relating to the field of die-casting equipment technology. It includes a die-casting machine body, with a vibration mechanism for assisting demolding installed on the side of the lower mold body. A lifting mechanism for assisting casting demolding is installed at the bottom of the die-casting machine body. A translation mechanism for pushing the casting away from the mold is installed on the side of the lifting mechanism. A release mechanism for assisting casting lifting is also installed inside the lifting mechanism. By setting up the vibration mechanism, a hammer periodically impacts the side of the lower mold body of the die-casting machine body. High-frequency mechanical vibration reduces the static friction and adhesion between the casting and the mold cavity. Vibration can cause minute displacements in the metal lattice, eliminating stress concentration, thereby improving the fluidity and demolding performance of the casting. This not only reduces mechanical damage to the mold and casting during forced ejection but also reduces demolding resistance, creating conditions for subsequent ejection actions.

The invention relates to the technical field of chip safety protection, and discloses a method for generating a multi-path parallel random path for a top protection layer of a chip, and the method comprises the steps: forming a metal lattice matrix in a to-be-protected region of the chip; planning a path lattice according to the split number M; generating N / M paths; m parallel metal paths are split based on each path, and adjacent metal wires belong to different paths through path splitting, so that the short circuit detection probability is improved, and meanwhile, the complexity of the paths is kept. According to the method, the physical attack resistance of the chip is effectively enhanced, and the method is suitable for the protection layer design of a high-end security chip and has high flexibility, high compatibility and excellent robustness.

The invention discloses a method for identifying macroscopic morphology defect types of an additive manufacturing lattice structure. The method comprises the following steps: acquiring lattice cell image data of a vertical angle; calibrating the dot matrix cell element image data, constructing a dot matrix cell element identification data set, and identifying single dot matrix cell element image data; segmenting the single dot matrix cell image data, constructing a dot matrix cell top arc region segmentation data set, and segmenting the top arc regions of four rod pieces of the dot matrix cell; processing the top arc areas of the four rod pieces of the segmented dot matrix cell element, and extracting cell element feature information; quantizing the extracted cell feature information, and determining a quantitative index; and identifying and classifying defect types of the dot matrix cell element image data based on the quantitative indexes. According to the method, lattice structure defects are recognized, defect types are quantified, and the printing quality and mechanical properties of the large metal lattice are effectively guaranteed.

An aluminum material, a preparation method thereof, and a bowl-shaped aluminum block are provided in the present disclosure, which relates to the technical field of alloys. Controlling the amount of manganese to 0.03-0.5 wt % in the present disclosure can improve the structure and enhance the impact mechanical properties of aluminum material; nickel can improve the strength and rust resistance of aluminum material, strontium can form an aluminum-strontium combination to adjust the crystal orientation of the metal lattice, which can improve molding and greatly enhance flexibility, and zirconium has a synergistic effect, which can improve the corrosion resistance of aluminum material, and improve surface gloss. The aluminum material provided by the present disclosure has a hardness of 23-30 HB, a tensile strength of 70-100 MPa, a yield strength of 35-59 MPa, and an elongation at break of 40-60%.