1750 results about "Delamination" patented technology

The invention discloses a photocuring 3D printing mechanism method for multi-material cooperative spraying, and relates to the field of cooperative control, and the photocuring 3D printing mechanism method comprises the following steps: layering a model, generating a material distribution map, and labeling a functional area and a transition area; a multi-nozzle array is used for accurately positioning and spraying according to the atlas; a gradual change path is planned in the transition area, and gradient change of material components is achieved through cooperative spraying; a partition curing strategy is adopted, ultraviolet light full curing and visible light semi-curing are adopted, and leveling is promoted in combination with micro-vibration; spraying a penetrating agent between layers to form a mechanical interlocking enhanced interface; based on visual online defect detection, printing parameters are fed back and adjusted in real time through a CNN model. The device and the method have the advantages that accurate mixing of multiple materials is realized through cooperative spraying of the multiple piezoelectric sprayers and gradual change path planning, and real-time defect detection and correction can be realized by matching with differentiated photocuring, high-frequency micro-vibration leveling and interlayer penetrating agent interlocking, so that high-precision multi-material functional component forming is efficiently completed.

The invention discloses an automobile part aluminum plating tool with overturning and clamping functions, and relates to the technical field of film plating tools, the automobile part aluminum plating tool comprises a driving assembly, a fixed outer frame and a plurality of overturning and clamping assemblies, and each overturning and clamping assembly comprises a deflection connecting rod, a telescopic rod, a workpiece chuck and a guide sleeve rod; when the driving assembly ascends and descends, the deflection connecting rod is driven by the first hinge shaft to deflect, the telescopic rod is forced to slide in the radial direction of the guide sleeve rod, and the workpiece chuck generates clamping / releasing displacement. An inner transmission ring is arranged on an inner ring of the fixed outer frame, a transmission wheel is installed at the lower end of the guide sleeve rod, and when the driving disc rotates, a planetary gear train enabling the overturning clamping assembly to rotate is formed through transmission of the inner transmission ring and the transmission wheel. A multi-drive structure is replaced with mechanical layout, modular layered layout improves efficiency, structural innovation guarantees stability, integration of self-adaptive clamping, composite motion and batch processing is achieved in the field of vacuum coating, and the bottleneck that a traditional tool is insufficient in flexibility and poor in uniformity is broken through.

The invention discloses a composite material T-shaped beam forming method in the technical field of aviation, a forming die, a laying die and a bottom face forming die which are arranged in a split mode and can be combined are adopted, forming is conducted through a secondary hot-pressing curing process, and the method comprises the following steps that S1, preforming and R corner prefabricating are conducted, the independently-prefabricated prepreg core material is positioned in a T-shaped beam R-angle area formed after the prepreg core material and the T-shaped beam R-angle area are oppositely combined; and S2, first-time mold closing and pre-curing are carried out, specifically, the laying mold and the forming mold are oppositely closed, lateral auxiliary positioning is carried out through the bottom face forming mold, locking and fixing are carried out through a positioning pin and a clamping piece, and first-time hot-pressing curing is carried out on a combined body obtained after mold closing. According to the method, the independently prefabricated core material which is subjected to heat-sealing, pressing and pre-curing is filled in the R-angle area, and a secondary hot-pressing process of pre-curing and final curing is matched, so that sufficient pressure transmission and tight laying of the R-angle area are ensured, the defects of layering, bridging and the like are effectively avoided, and the percent of pass of nondestructive testing of products is remarkably improved.

The invention discloses a synchronous temperature control method for co-extrusion molding of a multilayer polymer film, and relates to the technical field of high polymer material processing, and the method comprises the following steps: setting a target temperature interval of each polymer layer of the multilayer polymer film, and according to the melting characteristics, heat sensitivity and interface bonding requirements of each layer of material, setting a target temperature interval of each polymer layer of the multilayer polymer film; respectively determining an extrusion temperature set value and an allowable fluctuation range; through layered independent temperature control and preheating matching, thermal behavior synchronization of multiple polymer melts is achieved, and the interface bonding stability is improved; through a die head heat insulation and buffer structure, interlayer heat interference is effectively shielded, and the integrity of a functional layer is guaranteed; through the intelligent closed-loop temperature control system, the state of each temperature control area is predicted and adjusted in real time, and self-adaptive optimization of thermal control is achieved. And the co-extrusion quality, the consistency and the production intelligent level of the multi-layer film are integrally improved.

The invention discloses a multi-material plastic plate extrusion molding device which comprises a plurality of double-screw extruders, the output ends of the double-screw extruders are communicated with a conveying pipe, and the end, away from the double-screw extruders, of the conveying pipe is communicated with a conveying shell. The invention relates to the technical field of plastic plate production equipment, through cooperation of the double-screw extruder, the conveying pipe, the conveying shell, the mixing and conveying assembly and the extrusion shaping assembly, extrusion shaping of multi-material plastic plates is achieved, targeted temperature and rotating speed setting can be conducted according to the characteristics of different raw materials, and the production efficiency is improved. Different raw materials are mixed in an optimal molten state, the problems of layering, uneven mixing and the like caused by large differences of melting points and flowability in the mixing process of the different materials are avoided, the overall stability and reliability of the plastic plate are improved, the requirements of the market for the multi-material composite plastic plate are met, and the market prospect is wide. The large-scale application of the plastic plate in more fields is promoted.

The invention relates to the technical field of paint spraying, and particularly discloses a mosaic gold aerosol paint and a preparation method thereof. The painted gold aerosol paint comprises the following raw materials in percentage by mass: 30-40% of acrylic resin, 20-30% of a solvent, 5-15% of painted gold powder, 0.5-1% of a dispersing agent, 30-40% of a propellant and 0.5-2% of other auxiliaries. The dispersing agent comprises a star-shaped PEG polymer, an alkyl diphosphonic acid compound and macrocyclic oligoester. The mosaic gold aerosol paint has the advantages of being capable of being stored for a long time and not prone to oxidation and layering, can present colorful metallic paint after being coated and has different metallic color effects at different angles, and the appearance aesthetic feeling of a coated object is remarkably improved.

The invention discloses a rapid forming method for preparing a multi-layer thick and high-precision complex part, and belongs to the technical field of additive manufacturing, the method comprises the following steps: S1, part self-adaptive partitioning treatment: firstly partitioning the whole target part according to an internal entity and an outer surface, then adaptively dividing a partition into sub-partitions, and adaptively designing the width of the outer surface; s2, multi-layer thickness collaborative slice printing is conducted, specifically, the optimal forming layer thickness is set according to the partition characteristic difference, layer thickness collaborative slice design is achieved, and meanwhile the incidence relation between the layer thickness and the outer surface width is established; and S3, layered alternate scanning printing is conducted, specifically, highly-differentiated laser process parameters and scanning strategies are adopted for slices of different partitions. By means of the method, the metal part with the complex geometrical characteristics and the variable-thickness structure can be efficiently and precisely manufactured, and the quality and efficiency of the SLM technology in the complex metal part manufacturing process are remarkably improved.

The invention provides a functionally graded material modeling and path planning method based on additive manufacturing, and relates to the technical field of functionally graded material additive manufacturing. The method comprises the following steps: firstly, slicing a three-dimensional space model of a part to obtain geometric contour information of a model slice layer; taking the geometric contour of the layered model slice as a constraint, and carrying out triangulation processing on the two-dimensional polygon slice layer to obtain a two-dimensional triangular mesh model; correlating the material information of the customized workpiece with the geometric information by using a curved surface grid thermal diffusion model algorithm, namely, designing a single or multiple heat source points or heat source lines, and performing gradient diffusion in a grid to generate a scalar field containing material gradient distribution information; extracting a contour line of a specific scalar value to perform region division on the slice model to form a plurality of gradient feature sub-regions; and finally, according to the contour features of different sub-regions, a corresponding path planning strategy is adopted to optimize the path, an optimal path is generated, and accurate forming of the functionally graded material is achieved.

The invention discloses a paper base-PHA double-sided composite soil biodegradable agricultural mulching film as well as a preparation method and application thereof, and belongs to the technical field of agricultural mulching materials and green high polymer materials. The mulching film comprises a paper base layer and a homologous polyhydroxyalkanoate covering layer arranged on the surface of the paper base layer. Through double-sided synergy of the water-based PHA coating on the soil sticking surface and the thermoplastic PHA extrusion film layer on the windward and rainy surface, and in combination with a'wet-to-heat 'integrated composite process and trace anhydride grafting, super-strong combination of a paper-plastic interface fiber tearing level is realized, and the problem that traditional paper-plastic is easy to layer is solved. Compared with a traditional fluorine-containing product, on the premise that total organic fluorine is not detected, the excellent barrier and moisture conservation performance is achieved with the thinner coating thickness by means of double barriers. The product has excellent mechanical laying adaptability and long-season weather resistance, is fully biodegradable, thoroughly solves the hidden dangers of micro-plastic residues and persistent organic pollutants, and is an ideal green agricultural covering material.

The invention discloses an underground mine goaf filling body strengthening and subsequent mining joining method, and relates to the technical field of mine mining. Comprising the following steps of intelligent filling body construction and reinforcement, multi-source fusion intelligent monitoring and digital twinning construction, data-driven subsequent mining dynamic intelligent decision making and energy regulation and control, targeted restoration and collaborative ecological reconstruction. The intelligent filling body is made of the shape memory polymer fibers and the nanometer piezoelectric ceramic particles, the layering process is combined to improve the strength and real-time state feedback, the safety and durability of the filling body are remarkably improved, the high-fidelity digital twinborn model is constructed in a fused mode, intelligent decision making and active wave absorbing regulation are linked, and the stability of the filling body is improved. The subsequent mining efficiency can be effectively improved, the damage risk of the filling body can be effectively reduced, in addition, the damage area is accurately positioned through the unmanned aerial vehicle, directional grouting repair is conducted, heavy metal is solidified through microorganisms, solid waste is recycled, the resource utilization rate in the mining process is increased, and the environmental burden is reduced.

The invention relates to the technical field of composite films, and particularly discloses a low-temperature heat-sealable high-strength BOPP composite film and a preparation process thereof.The BOPP composite film is prepared by adopting three-layer co-extrusion and two-way stretching processes, and the balance between high strength and low-temperature heat sealability is achieved. The composite film comprises an anti-adhesion surface layer, a core layer and a low-temperature heat-sealing layer; the anti-adhesion surface layer is prepared from the following raw materials: homo-polypropylene, a composite anti-adhesion agent, a slipping agent and PP-g-MAH; the composite anti-adhesion agent is prepared from modified silicon dioxide and modified diatomite in a mass ratio of 3 to 1; the raw materials of the core layer comprise homo-polypropylene, an antistatic agent and a coupling agent, and the raw materials of the low-temperature heat sealing layer comprise an ethylene-vinyl acetate copolymer, PP-g-MAH, a polyolefin elastomer, POE-g-MAH, a modified nucleating agent and an antioxidant, so that the balance of high strength and low-temperature heat sealability is realized, interlayer performance complementation is realized, the mechanical strength is improved, the heat sealing temperature is reduced, and the service life is prolonged. The overall peel strength is improved, and no layering phenomenon exists during stretching.

The invention provides a foundation pit water gushing iron ore grading thixotropic blockage reduction method which comprises the steps that iron ore tailings are crushed and screened into multi-stage particle size particles, and a customized mold is subjected to 3D printing based on foundation pit scanning data; paving particles in a mold layer by layer, doping iron powder, and cementing and curing cement paste to form a prefabricated body; the prefabricated body is installed to a water gushing area, the slurry viscosity is increased through a grading contact network, a weak gravitational flow state is triggered to be transiently changed to an anti-scouring state, and water flow speed reduction is achieved; alternating field induction micro-vibration is synchronously started during lateral grouting, and grout permeation and bubble discharge are driven; after solidification, the guide core body is pulled away, and remaining pore channels are self-compacted by a grading system to form an anti-seepage structure. The method has the advantages that the anti-scouring performance is enhanced; particle-slurry-foundation pit curved surface triple self-adaptive combination is carried out; the engineering cost is reduced.

The invention discloses an additive manufacturing method for in-situ regulation and control of a TiB / TiC titanium-based heterostructure through laser deposition, and belongs to the technical field of composite material preparation. According to the method, laser path planning is carried out based on three-dimensional modeling and layered slicing; the preparation method comprises the following steps: ball-milling and mixing titanium alloy powder, nano boron carbide powder and trace rare earth powder according to a specific proportion, and carrying out vacuum drying; and addition of trace rare earth is beneficial to grain refinement and improvement of reinforcement phase distribution and interface bonding. Under the action of a high-energy laser beam, the mixed powder is fused in an argon protective atmosphere, an in-situ reaction is carried out at the same time, and TiB and TiC reinforced phases are generated; the gradient component design can be implemented in the laser deposition process, specifically, the powder feeding proportion of B4C powder is dynamically controlled through a program, the gradient of the B4C powder is increased from the bottom layer to the surface layer in the direction perpendicular to the substrate, and therefore the gradient heterostructure with the enhanced phase content and performance gradually changed is formed. According to the method, the problems of non-uniform reinforcement phase distribution, obdurability mismatch, plasticity loss and the like in a traditional method are solved, the prepared composite material or gradient component has high strength (the tensile strength reaches 987.66 MPa) and good plasticity and toughness matching, no crack defect exists, and the method is suitable for manufacturing of high-performance parts in the fields of aerospace and high-end machine manufacturing.

The invention discloses a high-throughput continuous switching food 3D printing method and system. The method comprises the steps that a printing target three-dimensional model is selected, layered slicing is conducted on the printing target three-dimensional model in the Z-axis direction, and multiple layers of printing images are generated; converting the multi-layer printing image generated by slicing into a material information matrix based on a gray threshold; printing parameters are set, a material switching advance distance and material switching section variable speed optimization are set according to material physical properties, and a continuous switching food 3D printing G-code control instruction is generated based on the material information matrix. According to the method, accurate segmentation and path coherence control of a multi-material area can be achieved in combination with the rheological property of the food material, so that the high-throughput printing requirement is met while the pattern fidelity is guaranteed, stable deposition and accurate pattern reproduction of the food material can be achieved in the fast switching process of the same spray head, and the printing efficiency is improved. And the comprehensive performance of food 3D printing in complex model manufacturing and high-throughput production can be improved.

The disclosure describes a device, method, and transfer apparatus for stamping thermoplastic composite blanks. The blanks may consist of laminated fibrous plies which may comprise continuous fibers in a thermoplastic polymer matrix. Supporting unidirectional fibers or holding tapes, pre-impregnated with polymer and extending beyond a shaping area's edges may be clamped in jaws, allowing the blank to be suspended and heated without sagging. The transfer system moves the blank between a heating station and a stamping station, where a punch and die may shape it while maintaining calibrated tension to reduce defects such as creasing or delamination. Advanced jaw mechanisms, including pivoting jaws with multiple clamping slots, enable differential tensioning of plies for precise forming of complex geometries. After stamping, excess fiber extensions may be trimmed and may be recycled. This approach eliminates the need for nonrecyclable polyimide films and improves process reliability for thick or heavy blanks.

The invention discloses a composite cathode and anode plate made of a lead-carbon composite material, the composite cathode and anode plate comprises a current collector, a transition layer and an active layer which are compounded in sequence, the transition layer tightly coats the outer surface of the current collector, the active layer tightly coats the outer surface of the transition layer, and the composite cathode and anode plate is prepared by the following method: S1, preparing the composite cathode and anode plate; raw material pretreatment: placing the carbon material in a vacuum oven; according to the invention, the structural design of the composite negative plate and the preparation process are integrated, so that accurate matching of the raw material ratio and the process parameters is realized, and many defects of the traditional electrode are effectively solved; the three-layer gradient structure improves the interface bonding force, and delamination is avoided; the optimized raw material system and the preparation process have a synergistic effect, so that the hydrogen evolution overpotential is remarkably improved, the internal resistance is reduced, the cycle life is prolonged, the low-temperature performance is improved, the energy density is improved, and a reliable technical scheme is provided for the application of the lead-acid storage battery in the high-end field.

This invention discloses a method for calculating the vibration response of a delaminated composite laminate, belonging to the field of structural defect calculation and analysis. The method includes: dividing the composite laminate with delamination defects into delaminated and intact regions based on the damage condition; decoupling the delaminated regions dynamically; describing the vibration characteristics of each component in both the delaminated and intact regions using elastic waves based on elastic wave propagation theory, and establishing vibration state vector expressions for each region; determining the compatibility relationship based on the displacement continuity and internal force equilibrium conditions at the coupling point between the delaminated and intact regions, and establishing structural dynamic equilibrium equations in wave space based on the boundary conditions of the composite laminate; solving the structural dynamic equilibrium equations to obtain the amplitudes of elastic waves of each order; and calculating the vibration response of each region of the composite laminate based on elastic wave theory and amplitude calculation. This invention solves the problem of low computational efficiency in existing methods.

The invention relates to the technical field of high-end packaging and printing, and discloses a base material back coating and a preparation method thereof, and the base material back coating comprises the following components in parts by weight: 55-70 parts of mixed matrix resin formed by polar modified epoxy acrylate and perfluoropolyether acrylate according to a weight ratio of 4 / 1-9 / 1, according to the invention, self-stratification power generated by viscosity reduction in a heat leveling stage is utilized to drive the components to migrate directionally and construct a gradient interpenetrating network structure, so that the self-stratification effect is improved, and the self-stratification effect is improved; the coating is subjected to continuous chemical transition from the bottom anchoring layer to the surface shielding layer, interface stress concentration generated by physical layering is eliminated, and the interface bonding stability is improved on the premise that the protection strength of the ultrathin coating is guaranteed.

The invention discloses a bubble discharging device for a silica gel coating composite material, and relates to the technical field of bubble discharging of coating materials, the bubble discharging device comprises a tank body, a transparent observation window is arranged on one side of the tank body, a discharging pipe is connected to the lower portion of one side of the tank body in a penetrating mode, and an adding pipe is connected to one side of the top of the tank body in a penetrating mode; a through groove is formed in the center of the top of the tank body in a penetrating mode, the premixing tank is arranged above the tank body, two sets of supporting legs are symmetrically installed at the bottom of the premixing tank, the bottom ends of the supporting legs are fixedly connected with the tank body, and a feeding pipe is connected to the upper portion of one side of the premixing tank in a penetrating mode; according to the defoaming device for the silica gel coating material, when the silica gel coating material is defoamed, the coating material and the defoaming agent can be pre-tested, the applicability of the defoaming agent can be judged by observing whether mixing or layering is generated after the coating material and the defoaming agent are premixed, and if the defoaming agent is not applicable, the tested defoaming agent can be quickly discharged.

The invention relates to the technical field of building models, in particular to a BIM-based building construction drawing design model construction method. The method comprises the following steps: extracting three-dimensional space coordinates and construction attributes of a component from a preset BIM building design model, wherein the construction attributes comprise layered material information of the component and the material thickness of each layer; projecting the three-dimensional space coordinates of the component to a two-dimensional view plane to generate a two-dimensional projection contour; calculating the vertical distance from the component to the view plane, and determining the display level of the component according to the size of the vertical distance; and identifying a construction node position on the two-dimensional projection contour, matching the construction node position with the construction attribute, and generating a detailed drawing index mark at the construction node position according to a matching result. According to the space distribution and the sideline direction of the blank area, the size marking lines are automatically generated, the reasonable spacing is kept, and the problems of shielding and overlapping are avoided.

The invention belongs to the technical field of composite material structural mechanics and computational mechanics, and particularly relates to a composite material fan blade composite crack propagation simulation method, program and equipment and a storage medium. According to the method, key rotation and a failure judgment criterion based on a key deflection angle are introduced into the conventional state near-field dynamic model, so that the crack propagation behavior of the composite material under the shear or mixed mode load can be more accurately captured and simulated. According to the flat plate mapping method, the improved PD model suitable for the flat plate is successfully expanded and applied to the fan blade airfoil section, the problem of complex geometric modeling is solved, and the flat plate mapping method is suitable for complex geometric structures. According to the method, a near-field dynamics method is adopted, crack paths do not need to be preset or grid reconstruction does not need to be carried out, and complex expansion behaviors such as spontaneous bifurcation and merging of cracks can be naturally simulated; the PD model can be used for meticulously describing the mechanical behaviors and crack evolution of each layer and interlayer in the laminated plate, including intra-layer cracking and interlayer layering.

A panel, in particular a floor, ceiling, or wall panel, of a planar design having a top side, a bottom side and multiple side edges, which panel has a laminated structure of layers that are adhered to each other. The layers extend parallel to the plane of the panel, and include a core layer having a lower side and an upper side, and a top layer which is provided on the upper side of the core layer either directly or indirectly. At least two layers of the panel, in particular the top layer and the core layer, are directly or indirectly adhered to each other by an intermediate adhesive layer. The intermediate adhesive layer is composed of adjacent intermediate zones which include non-adhesive intermediate zones and adhesive intermediate zones, which intermediate adhesive layer establishes an adhesive strength between the two layers, such that a durable adhesion between the two layers is obtained, and a clean delamination of the two layers is allowed for when the two layers are subjected to a sufficient delamination force.

The invention discloses a curing shrinkage compensation and forming precision control method and system for 3D printing, and relates to the technical field of 3D printing additive manufacturing, and the method comprises the steps that three-dimensional model data and printing process parameters of a to-be-formed part are obtained, and a compensation model is established and called; generating hierarchical data according to the three-dimensional model and generating target exposure information of each layer; in the printing process, target exposure information is corrected based on the compensation model and the technological parameters to obtain execution exposure information, and curing forming is completed; acquiring an intra-layer image and comparing the intra-layer image with layered data to calculate a deviation field of the current layer; and updating the compensation model according to the deviation field increment, generating a next layer of compensation quantity, and circulating until forming is completed. A deviation field is adopted to drive closed-loop updating, self-adaptive convergence of working condition drifting is achieved, critical dimension consistency, boundary fidelity and shape stability are improved, test participation experience dependence is reduced, three-dimensional collaborative correction according to contours, doses and beats is supported, and therefore repeatability of batch manufacturing of precision parts is improved.

The invention particularly discloses a layered and segmented composite fabricated foundation pit support structure and a construction method. According to the overall technical scheme, double enclosure of deep mixing piles and a cemented soil retaining wall is followed, truss rib laminated slabs are spliced in a layered and segmented mode, an anchor rod group transversely penetrates through the deep mixing piles to be anchored into the cemented soil retaining wall, anchor rod holes are also used as high-pressure grouting holes, anchor rod sleeves guide anchor rods to enter soil and assist the truss rib laminated slabs to be in place, and high-strength grouting materials are grouted at high pressure; according to the design concept of the pile-wall-plate-anchor rod composite type foundation pit support structure, a technical system that a soil layer outside a foundation pit is stabilized through a cement soil retaining wall, force is borne by deep mixing piles, support grouting forming is conducted through a truss rib laminated plate, and overall cooperative bearing is strengthened through anchor rod driving is constructed. And the supporting requirements of complex geological environments and large-depth foundation pits are stably met.

The invention discloses a preparation device and process of hydrophobic lightweight concrete, and relates to the technical field of concrete processing, the preparation device comprises a base, a pedestal, a die holder, a vibration mechanism, a pressing plate, a hydraulic cylinder, a height adjusting mechanism and a one-way valve structure; the height adjusting mechanism communicates with the exhaust channel and is configured to drive the pressing plate to descend relative to the hydraulic cylinder through the pressure of gas entering the exhaust channel so as to reduce the distance between the pressing plate and the upper surface of the raw material. According to the invention, the special one-way valve structure is arranged on the pressing plate and matched with the up-and-down reciprocating motion of the die holder, so that air extruded from raw materials can be actively exhausted to the exhaust channel in the vibration process, and most of air can be effectively exhausted even if the vibration time is relatively short, so that the tap density of the raw materials is ensured, and the production efficiency is improved. And the layering phenomenon of light and heavy materials caused by long-time vibration is avoided, so that the overall quality and the yield of the lightweight concrete are remarkably improved.

The invention belongs to the field of continuous fiber reinforced resin-based composite material layer design methods, and particularly relates to a variable-stiffness curve spiral impact-resistant composite material layer structure and an automatic laying forming method of the variable-stiffness curve spiral impact-resistant composite material layer structure. The method is inspired by a fiber microstructure of a natural spiral biological material, the design freedom degree of the material in the in-plane direction is further activated by adopting a continuous curve fiber ply configuration, the ply angle is linearly increased, and a symmetrical curve spiral ply configuration laminated plate is stacked according to the ply sequence; a three-dimensional bionic microstructure is constructed by cooperatively designing an in-plane curve fiber path and a spiral stacking sequence in the thickness direction, the impact resistance, the deformation resistance and the damage tolerance of the composite material are remarkably improved, and meanwhile, the interlayer performance can be further improved by inhibiting layering damage. The variable-stiffness curve spiral laminated plate is prepared by adopting an automatic fiber placement technology (AFP) and a hot pressing process. The invention provides a new thought for design and manufacturing of the high-performance impact-resistant composite material.

The invention discloses a large-size carbon fiber composite material wallboard precise hole making process method, and relates to the field of aviation composite material wallboard hole making, and the method comprises the steps that a chip containing space extending in the axial direction is machined in a preset hole position of a composite material wallboard forming mold, and the chip containing space is of a blind hole structure; the chip containing space is filled with a sacrificial layer material matched with thermal expansion, and the difference value between the thermal expansion coefficient of the sacrificial layer material and the forming mold and the composite material is smaller than a preset threshold value; the composite material wallboard is kept in a non-demolding state after being cured, and the wallboard and the forming mold are integrally positioned to machining equipment; establishing a processing coordinate system based on the reference features of the forming die; and a multi-cutting-edge tool is adopted for drilling the wall plate with the mold, so that the tool penetrates through the composite laminated plate and cuts the sacrificial layer material, and the tail end of the tool does not make contact with a forming mold body. According to the scheme, the precision of the connecting hole site of the composite material wallboard can be ensured, and the demolding deformation error, the outlet layering damage and the secondary clamping cost are synchronously eliminated.

The invention relates to the technical field of mylar film and aluminum foil layered stripping, in particular to a mylar film and aluminum foil layered stripping method and system for a high-speed wire harness, and the method comprises the steps: sequentially extracting a to-be-stripped high-speed wire harness from a to-be-stripped high-speed wire harness set, recognizing a film aluminum boundary line and a wire harness surface 3D model data set, obtaining an embrittlement adhesive wire harness, and obtaining a preliminary stripped wire harness; performing eddy current heat-assisted separation operation on the preliminarily stripped wire harness to obtain a separated Mylar film layer, a separated aluminum foil layer and a stripped wire harness, performing residue detection on the preliminarily cleaned stripped wire harness to obtain detection data, and respectively summarizing the separated Mylar film layer, the separated aluminum foil layer and the completely stripped wire harness to obtain a separated Mylar film layer, a separated aluminum foil layer and a completely stripped wire harness; and based on the separated mylar film layer set, the separated aluminum foil layer set and the completely stripped wire harness set, layered stripping of the mylar film and the aluminum foil of the to-be-stripped high-speed wire harness is completed. The stripping precision of the high-speed wire harness can be improved, and meanwhile environmental protection is achieved.

The invention discloses an intelligent cooling coating with a multi-layer functional gradient structure and a preparation method of the intelligent cooling coating. The coating comprises an infrared reflection-heat conduction blocking bottom layer, a heat insulation middle layer and an anti-pollution high-reflection surface layer. Each layer comprises the following components: hollow glass beads, aerogel powder and a water-based acrylic emulsion, and is used for constructing the low-heat-conductivity and infrared-reflection bottom layer; the metal organic framework material, the polyurethane emulsion, the coupling agent and the dispersing agent are used for constructing a heat-insulation slow-release middle layer; the reflective heat-insulation rare earth powder, the fluorosilicone modified acrylic resin, the flatting agent and the dispersing agent are used for constructing a high-reflection self-cleaning structure of the surface layer. Three-layer step-by-step construction, sequential coating and layered thermocuring are adopted for preparation. The coating is environment-friendly and stable in structure, has the properties of infrared reflection, self-cleaning, thermal buffering and the like, can be used for effectively cooling and improving weather resistance and corrosion resistance, is suitable for high-temperature protection of building outer walls, roofs, storage and transportation equipment and the like, and has a wide application prospect.

The invention relates to the technical field of tool surface functional coatings, in particular to a wear self-monitoring superhard wear-resistant gradient reinforced coating and a preparation method thereof.The coating comprises a metal substrate, a high-entropy wear-resistant layer, a color layer and a transition layer, and the outer layer is a top high-entropy wear-resistant layer; the high-entropy wear-resistant layer is composed of Ti / Al / Zr / Si / Mo-N, and the hardness gradient of the high-entropy wear-resistant layer is 35-55 GPa; the color layer is of an AlTiN / Si (Ti) double-layer structure and has a multicolor structural color, and the hardness of the color layer is 20-35 GPa; the transition layer is a component gradient system. The preparation method adopts multi-target magnetron sputtering, and comprises the steps of substrate pretreatment, layered deposition (wear-resistant layer / color layer / transition layer), top layer deposition and vacuum cooling. By means of the design, the problems that an existing coating lacks self-monitoring, the hardness gradient is narrow, and interlayer stripping is prone to occurring are solved, abrasion visual monitoring is achieved, super-hard abrasion resistance and high binding force (larger than or equal to 85 N) are achieved, different cutting working conditions are adapted, and the service life of a cutter is greatly prolonged.