3631 results about "Composite plate" patented technology

The invention discloses a composite board ultrasonic defect detection method which comprises the following steps: S1, fixing a carbon fiber circumferential winding composite pressure container on a bracket, and establishing a coordinate system with the axis of the container as a z axis; s2, a 40 MHz dry coupling phased array ultrasonic probe is attached to the scanning starting point, and the contact angle of the probe is recorded; s3, moving the probe along the spiral track of the outer surface of the container at the speed of 20mm / s, and collecting A-scanning echo signals of all array elements; s4, performing pulse compression and time domain deconvolution processing on the acquired signal to obtain a time domain echo sequence; s5, delay time is calculated according to the shell curvature, the array element signals are compensated, and focusing B-scanning data are generated; s6, splicing the B-scanning data at the step length of 0.5 mm * 0.5 mm, and reconstructing C-scanning data corresponding to the space coordinates; and S7, inputting the C-scanning data into the trained Transform network, and outputting defect types, sizes and three-dimensional coordinates. The method realizes high-frequency ultrasonic composite board defect accurate detection, remarkably improves the microcrack recognition rate, and is widely applied to safety evaluation scenes of high-pressure hydrogen storage tanks and pressure vessels.

The invention relates to the technical field of image data processing, in particular to a wood composite board furniture surface defect identification method and system. And wood board images are collected from the surface of the wood composite board furniture. Adaptive grid division is carried out on the wood board image according to different scales, texture direction information and high and low frequency texture components are extracted, and a texture feature map is obtained; and extracting structure edge information of the wood board image to obtain a structure information graph. Matching the texture feature map with the structure information map, and calculating local mutual information of the texture feature map and the structure information map in each region; the method comprises the following steps: acquiring resolution images of a wood board image under different scales, and calculating a mutual information matrix of the resolution images; distributing an abnormal score for each matrix element based on the mutual information matrix; and dividing grids according to the abnormal score, calculating a correlation value of adjacent grids, and obtaining a defect area based on the correlation value. And carrying out defect classification on the defect area. According to the invention, interference of natural textures can be reduced, and defect identification of small defects and tiny changes can be improved.

A process or method for manufacturing a fire-retardant treated wood composite board or panel, such as oriented-strand board, with a low melting point fire retardant (FR) material, such as boric acid, while the press is operating at typical press temperatures above the FR material melting point. An intervening overlay is applied to the top surface of the mat on the forming line, after the use or application of any FR material within or on the mat, prior to entry into the press. The intervening overlay covers the top surface so as to prevent the melting fire retardant material from contacting the press platen(s). After pressing, the intervening overlay may be removed from the top surface by sanding, buffing, or other methods. The intervening overlay also may be sized so as to extend over one or more edges of the underlying panel, for ease of removal post-process.

The invention discloses an automatic rock wool block arranging device for rock wool composite board production, and belongs to the technical field of rock wool composite board production, the automatic rock wool block arranging device comprises a support frame, an automatic arranging and stacking assembly and an automatic dismounting assembly, the upper surface of the support frame is provided with a conveying roller, the upper surface of the conveying roller is provided with a plurality of rock wool blocks, and the outer surface of the support frame is provided with a piling car; the automatic arranging and stacking assembly is installed in the stacking car. According to the rock wool block stacking device, the supporting plate is driven by the hydraulic rod to move up and down, the stacking process of rock wool blocks can be rapidly completed, the waiting time is shortened, and therefore the arrangement and stacking work of the rock wool blocks can be automatically completed, and tedious and complex steps in the traditional stacking process are avoided; according to the rock wool block stacking device, the position accuracy during stacking each time is ensured, errors possibly caused by manual operation are avoided, meanwhile, extra buffering can be provided through the silica gel pad in the stacking process, scratches or damage to the surfaces of rock wool blocks are avoided, and the quality of final products is improved.

The invention relates to a high-performance composite board prepared from waste wind power blades and a preparation method of the high-performance composite board. The high-performance composite board contains a large amount of waste wind power blade powder and waste wind power blade degraded glass fibers, so that the manufacturing cost of the high-performance composite board can be reduced; in addition, powder made of waste wind power blades and regenerated glass fibers obtained through a chemical degradation method can be recycled, resource utilization of the retired wind power blades is achieved, and the resource utilization problem of the retired wind power blades is effectively solved. Besides, the coupling effect of the waste wind power blade powder and the waste wind power blade degraded glass fiber with the thermoplastic resin is good, and under the synergistic effect of the compatilizer, the wood flour, the filler, the lubricant and other materials, the mixing and stirring effect can be improved, and the service life of the material is prolonged. Waste wind power blade powder and waste wind power blade degraded glass fibers can be uniformly dispersed in the high-performance composite board, and the physical properties of tensile resistance, bending resistance and compression resistance of the composite board can be improved.

The invention provides a titanium-steel composite plate manufacturing optimization method and system based on a neural network model, and relates to the technical field of artificial intelligence, and the method comprises the steps: collecting interface data in a titanium-steel composite plate manufacturing process, and generating interface combination features; inputting the interface bonding features into an adaptive memory network, and predicting interface bonding strength; generating an optimized process parameter combination through a double-delay depth Q network structure with a priority experience playback mechanism; and taking the optimized process parameter combination as an initial population, and generating an optimal process parameter scheme based on performance indexes and process stability by adopting a phase change temperature point staged control and theory-differential gradient fusion mode.

The invention discloses a preparation method of a heterogeneous-heterogeneous double structure of a high-strength copper / steel composite board, which comprises the following steps: realizing metallurgical bonding between copper and steel heterogeneous metals through the synergistic effect of a laser energy field and a rolling force, and promoting formation of a martensite structure near a composite interface; then, the surface of the steel side is subjected to online heat treatment through a flat-topped laser beam, and the purposes that the outer surface layer structure of the steel side is completely converted into martensite, the martensite structure at a bonding interface is converted into tempered sorbite, the residual stress of the copper side is reduced, and a heterogeneous structure with the grain size in gradient distribution is formed on the copper side are synchronously achieved; the tensile strength, the interface bonding strength and the toughness of the copper-steel composite plate are synergistically improved.

The invention discloses an electronic packaging heat dissipation substrate and a processing technology and application thereof. The electronic packaging heat dissipation substrate comprises a copper-clad diamond copper plate, a diamond sheet located on the copper-clad diamond copper plate and a first copper layer covering the diamond sheet. The copper-clad diamond copper plate comprises a diamond copper core material and a copper layer located on the surface of the diamond copper core material. The diamond copper core material and the copper layer form a composite board with a copper layer-core material-copper layer sandwich structure; and the copper-clad diamond copper plate, the diamond sheet and the first copper layer are connected into a whole through brazing. According to the electronic packaging heat dissipation substrate, the peeling and cracking risks can be reduced, and the problem of low heat transfer efficiency is solved.

The invention relates to a composite supporting plate forming process, a forming mold and a composite plate shoe sole processing technic.The composite supporting plate forming process comprises the following steps that a supporting plate is placed in the forming mold, the supporting plate is made of a metal material with the density smaller than 5 g / cm < 2 >, the supporting plate is provided with hollowed-out mesh holes, the hollowed-out proportion of the supporting plate is 50%-90%, and the hollowed-out mesh holes are formed in the forming mold; a forming gap is formed between the supporting plate and the interior of a mold cavity of the forming mold. And a TPU material is injected into the mold cavity, the supporting plate is wrapped with the TPU material to form a TPU film, and the composite supporting plate is obtained. The prepared composite supporting plate can replace a carbon plate to be used in a shoe sole, and the cost is greatly reduced.

The invention discloses a planar phased array ultrasonic transducer, and relates to the technical field of transducers, the planar phased array ultrasonic transducer comprises a 1-3 type piezoelectric composite board, a common positive electrode panel and a flexible circuit board, the 1-3 type piezoelectric composite board comprises a polymer frame and a plurality of PZT piezoelectric ceramic columns, all the PZT piezoelectric ceramic columns are embedded in the polymer frame in an array, and the PZT piezoelectric ceramic columns are connected with the flexible circuit board. One end of each PZT piezoelectric ceramic column is a positive electrode end, the other end of each PZT piezoelectric ceramic column is a negative electrode end, the common positive electrode panel is connected with the positive electrode ends of the PZT piezoelectric ceramic columns, the flexible circuit board is provided with a bonding pad area and at least one pin area, the bonding pad area is fixedly provided with a plurality of bonding pads, the pin area is fixedly provided with a plurality of pins, and the flexible circuit board is provided with a plurality of conductive terminals. All the pins, all the bonding pads and all the negative electrode ends of the PZT piezoelectric ceramic columns are in one-to-one correspondence, the bonding pads are electrically connected with the pins, and the bonding pads are connected with the negative electrode ends of the PZT piezoelectric ceramic columns; according to the invention, the PZT is applied to the planar phased array ultrasonic transducer.

The invention discloses a method for preparing a copper-aluminum layered composite board by introducing laser into an intermediate layer, which comprises the following steps: introducing laser into the intermediate layer (Al-Cu-Mg-Si-Zr-Sc series alloy), so that on one hand, copper and aluminum to be compounded are in a heating state to be subjected to rolling compounding by utilizing the heat conduction effect of the heated intermediate layer; the rolling reduction rate and the rolling mill capacity requirement are obviously reduced; and on the other hand, the added middle layer has excellent obdurability, so that the cooperative deformation capacity between the to-be-compounded dissimilar materials can be improved, and the interface bonding performance of the composite material is improved. And a mode of'introducing laser into the middle layer and carrying out short-time online annealing treatment 'is adopted to replace'large down pressure and long-time diffusion annealing' adopted by a traditional copper-aluminum composite material, so that the processing and forming efficiency of the copper / aluminum composite material is remarkably improved, and the method has the characteristic of short process.

The invention discloses a preparation method of a medium-entropy alloy and stainless steel explosive welding composite board, and belongs to the field of metal-based composite material processing. The preparation method specifically comprises the following steps: polishing the medium-entropy alloy and the stainless steel to remove oil stains and oxides on the surfaces of the medium-entropy alloy and the stainless steel; a low-carbon steel anvil serves as a base plate, stainless steel serves as a base plate, a medium-entropy alloy serves as a compound plate, a corrugated board serves as a buffer layer of explosive and the compound plate, and metallurgical connection of the medium-entropy alloy plate and the stainless steel plate is achieved through low-detonation-velocity high-brisance mixed explosive. The interface bonding rate of the obtained composite board is larger than 98.8%, the yield strength is larger than 620 MPa, the tensile strength is larger than 735 MPa, the percentage elongation after fracture is larger than 40%, and the interface shear strength is larger than 300 MPa. The process is simple and convenient, and is suitable for industrial production.

The invention discloses a thermal insulation color steel sandwich composite board product quality detection system based on digital twinning, and particularly relates to the field of quality control. The system comprises a composite board full-dimension three-dimensional digital model construction module, a production digital twinborn body creation module, a total-factor real-time data acquisition module, a data preprocessing module, a twinborn data driving and model calibration module, a quality intelligent analysis decision module and an optimization execution module. The model construction module constructs a reference model and embeds a process standard and a quality threshold value; the twin creation module builds a virtual production line, standardizes a data interface and assigns an ID to a plate; the data acquisition module acquires real-time data; the preprocessing module removes abnormal values, standardizes data and associates the data; the calibration module updates the twin body, calculates the deviation and calibrates the model; the analysis module realizes compliance judgment, defect analysis and quality prediction; and the optimization module generates and executes an instruction, so that the problems of low efficiency, data splitting and no closed loop of traditional detection are solved, and the quality control precision and efficiency are improved.

The invention relates to the technical field of metal composite material rolling, and discloses equipment and a process for hot-warm wave flat rolling of a titanium steel composite plate. The rolling assembly comprises a first rolling piece and a second rolling piece, and a plate is firstly subjected to corrugated rolling through the first rolling piece and then subjected to flat rolling through the second rolling piece; the straightening part is used for straightening the plate subjected to corrugated rolling; the conveying part is arranged on the rack, located above the first rolling part and used for stably conveying the heated plate; and the heating assembly comprises a heat preservation piece and two heating pieces, the two heating pieces are arranged on the first rolled piece and the second rolled piece correspondingly and used for heating the plate materials before rolling, and the heat preservation piece is arranged on the conveying piece and used for conducting heat preservation on the conveyed plate materials. According to the invention, the bonding strength of the composite plate is improved, the residual stress of the rolled plate is reduced, the phenomena of tail slippage, tail cracking, oxidation and the like of the plate are avoided, and the phenomenon of surface cracking caused by poor metal plasticity is avoided.

The invention relates to a nickel-based alloy composite plate and a preparation method thereof, and belongs to the technical field of alloy preparation. The alloy reinforcing agent is prepared under the sintering condition of high-temperature reducing gas protection by mixing the lanthanum element and the nanometer aluminum oxide, the granularity can be refined in the smelting process by adding the alloy reinforcing agent, and the wear resistance, hardness, strength and oxidation resistance of the alloy are effectively improved. Nickel is used as a matrix, an alloy reinforcing agent and elements such as molybdenum, copper, boron and hafnium are added, meanwhile, a mixture of potassium chloride and magnesium fluoride is used as a fluxing agent, uniform mixing and reaction of alloy components are promoted, and the nickel-based alloy smelted through step-by-step heating in vacuum has high hardness and strength and good abrasion resistance, corrosion resistance and high temperature resistance; and the stainless steel substrate and the nickel-based alloy plate are tightly combined through welding treatment, and the nickel-based alloy composite plate is suitable for manufacturing a vacuum chamber.

The invention relates to the technical field of metal composite materials, in particular to a titanium-aluminum-titanium layered metal composite plate and a machining method and application thereof. The titanium-aluminum-titanium layered metal composite plate comprises a metal composite plate body, wherein the metal composite plate body comprises a first titanium metal layer, an aluminum metal layer and a second titanium metal layer; a first interface transition layer is formed between the first titanium metal layer and the aluminum metal layer, and a second interface transition layer is formed between the second titanium metal layer and the aluminum metal layer; the thickness of the metal composite plate body ranges from 0.05 mm to 0.2 mm. The metal composite plate body is formed by pouring molten aluminum between two solid titanium sheets subjected to thinning treatment, and after solidification, diffusion heat treatment and rolling are sequentially carried out. The thickness can be controlled between 0.05 mm and 0.2 mm, the ultrathin thickness enables the composite board to have light weight, high flexibility and excellent mechanical performance, and the ultra-thin composite board is suitable for the field with strict requirements for weight and size. The metal composite plate not only has high strength and good conductivity, but also has excellent corrosion resistance.

The invention relates to a vacuum electron beam welding method for an extra-thick double-sided stainless steel composite blank. The vacuum electron beam welding method comprises the steps that S1, a blank is prepared; s2, processing the surface of the base material carbon steel; s3, processing the surface of the composite stainless steel; s4, assembling and vacuum electron beam direct welding are carried out twice; s5, performing surface anti-oxidation spraying and packaging treatment on the double-sided composite blank after secondary welding; s6, heating the composite blank in a heating furnace, and rolling; and S7, the composite blank is rolled to the thickness required by the product according to the rolling ratio required by the finished product, and the stainless steel + carbon steel + stainless steel extra-thick double-sided stainless steel composite plate can be obtained after cooling. According to the method, the key technical bottleneck of producing the extra-thick double-sided stainless steel composite blank through the vacuum electron beam welding process is solved, particularly, the influence of vacuum electron beam welding magnetic blowing is eliminated, and powerful technical support can be provided for follow-up variety development and stable production.

The invention discloses a wave-absorbing foam / honeycomb core composite board as well as a preparation method and application thereof. Comprising a honeycomb core substrate layer, a wave-absorbing foam embedding layer and a wave-transparent foam filling layer which are sequentially stacked, the honeycomb core substrate layer is a honeycomb core with a plurality of through hollow areas, and each surface of the honeycomb core is provided with a wave-absorbing coating; the wave-absorbing foam embedded layer comprises a plurality of filling parts and protruding parts, the hollow area of the honeycomb core substrate layer is filled with the filling parts, and the protruding parts are arranged on the surface of the honeycomb core substrate layer in a protruding mode and form a fluctuating structure; the wave-absorbing foam embedded layer is made of a wave-absorbing material; the wave-transparent foam filling layer is filled in the protruding parts, and a flat surface is formed on the side, away from the honeycomb core substrate layer, of the wave-transparent foam filling layer. The low-frequency absorption performance is improved on the premise that the total thickness is not increased, the multiple wave-absorbing characteristics of the wave-absorbing foam embedded layer are reserved, and meanwhile the excellent performance of the plane plate in the aspects of bearing, cutting and splicing is ensured.

The invention discloses a composite cold plate-phase change cold storage coupled liquid cooling server heat dissipation device, which comprises a composite plate assembly, the composite plate assembly comprises a cold plate seat, a cold plate module, a phase change cooling module, an input port, an output port and an assembling mechanism, the cold plate seat is internally provided with a supporting and lining groove, and the supporting and lining groove is internally provided with a supporting and lining groove; the phase change cooling module is installed at the lower end of the cold plate module in an embedded mode, the input port and the output port are installed on the upper end face of the cold plate module, the lower end face of the cold plate module is movably connected with the upper end face of the supporting and lining groove, and the cold plate module is connected with an inner cavity of the cold plate base in a sleeved mode. A first connecting pipe is installed between the circulating pump and the output port and used for circulating cooling liquid in the circulating pump, and the cold storage assembly comprises a liquid storage box, a cover plate, cooling fins and a cooling fan. Through the coupling design of the composite cold plate and the phase change material, efficient absorption, dynamic buffering and multi-stage recovery of heat of the server are achieved, and the bottleneck of traditional liquid cooling heat dissipation is broken through.

The invention discloses an anti-radiation aluminum-based layered composite board and an explosive welding method thereof, and belongs to the technical field of metal material welding. According to the method, aluminum or aluminum alloy serves as a base plate, tantalum or tantalum alloy serves as a compound plate, a titanium / titanium alloy middle transition layer is introduced, direct impact of explosive detonation on the compound plate is avoided through an aluminum protection plate, a powdery emulsion explosive is combined with an inert diluent to regulate and control energy parameters, and gaps between plates are accurately set based on the explosive welding window theory; and one-time forming metallurgical bonding of multiple layers of heterogeneous materials is achieved. The density of the obtained composite board is reduced by 40% compared with that of a traditional lead protection layer, and the composite board has the characteristics of radiation resistance, light weight, high strength and corrosion resistance and is suitable for manufacturing of spacecraft radiation protection layers and other deep space equipment.

The invention discloses a rolled extra-thick stainless steel composite plate and a production method thereof. Base layer steel comprises the following chemical components in percentage by weight: 0.12-0.16% of C, 0.18-0.30% of Si, 1.30-1.50% of Mn, less than or equal to 0.012% of P, less than or equal to 0.003% of S, 0.02-0.04% of Alt, 0.15-0.25% of Cr, 0.50-0.60% of Mo, 0.55-0.65% of Ni, less than or equal to 0.10% of Cu, less than or equal to 0.02% of Nb, less than or equal to 0.0010% of B and the balance of Fe and inevitable impurity elements. The cladding stainless steel comprises the following chemical components in percentage by weight: less than or equal to 0.03% of C, less than or equal to 0.75% of Si, less than or equal to 2.00% of Mn, less than or equal to 0.035% of P, less than or equal to 0.015% of S, 8.0-12.0% of Ni, 18.0-20.0% of Cr, less than or equal to 0.10% of N and the balance of Fe and inevitable impurity elements; the process route comprises the steps of blank welding compounding, vacuumizing, controlled rolling and quenched-tempered heat treatment. The SA533B CL1 + SA240304L stainless steel composite plate with the thickness of 62-69 mm is produced, the inspection yield strength is larger than 345 MPa, the tensile strength is larger than 550 MPa, the impact energy at the temperature of 10 DEG C is larger than or equal to 200 J, the shear strength is larger than 310 MPa, and the intergranular corrosion crack rate is 0.

The invention discloses a preparation method of a CoCrNi medium-entropy alloy and Q235B steel explosive welding composite board, which comprises the following steps of: annealing a CoCrNi medium-entropy alloy board, sequentially laying sandy soil, an anvil, a Q235B hot-rolled steel plate, a support column, a medium-entropy alloy board, kraft paper and explosive from bottom to top on an explosion field, and performing explosive welding to obtain the CoCrNi medium-entropy alloy and Q235B steel explosive welding composite board. The detonation velocity of the explosive ranges from 2500 m / s to 3000 m / s, and the brisance of the explosive ranges from 18 mm to 22 mm. According to the method, metallurgical bonding of the CoCrNi medium entropy alloy and the Q235B steel plate is achieved, the interface bonding rate of the obtained composite plate is larger than 99.2%, the yield strength is larger than 420 MPa, the tensile strength is larger than 500 MPa, the percentage elongation after fracture is larger than 35%, and the interface shear strength is larger than 200 MPa. The method is simple in process and suitable for industrial production.

The invention discloses a method for predicting the thickness of a composite layer of a composite board and related equipment, and relates to the technical field of composite board rolling, and the method comprises the following steps: obtaining assembly thickness data and target hot rolling process parameters of a to-be-measured composite board; inputting the assembly thickness data and the target hot rolling process parameters into a prediction model, and predicting the thickness of the composite plate to obtain a total thickness prediction value after cooling after hot rolling is finished; and based on the total thickness predicted value, calculating to obtain a composite layer thickness predicted value of the composite board. By fusing the assembly data, the hot rolling process parameters and the machine learning algorithm, online prediction and dynamic regulation and control of the thickness of the multi-layer are achieved.

The invention belongs to the technical field of automobile parts, and particularly discloses a GMT composite material automobile roof and a preparation method thereof. The GMT composite material automobile roof comprises a GMT composite board layer, a hot melt adhesive layer and a fabric layer, and is characterized in that the GMT composite board layer comprises the following components in parts by weight; comprising the following raw materials: 90-100 parts of composite fiber felt, 22-30 parts of modified bamboo fiber, 3-5 parts of tea tree oil, 1-2 parts of sodium tripolyphosphate, 2-4 parts of beta-glycerophosphate disodium, 0.5-0.8 part of lecithin, 15-20 parts of modified talcum powder, 4-6 parts of an expandable microsphere foaming agent and 190-200 parts of deionized water. The GMT composite material automobile ceiling prepared in the invention has excellent mechanical strength, durability and aging resistance, can provide mechanical protection for parts, and prolongs the service life of the automobile ceiling.

The invention discloses a friction stir welding preparation method of a carbon nanotube reinforced aluminum steel composite plate and the composite plate. The friction stir welding preparation method comprises the following steps: welding an aluminum alloy base material and a steel base material by adopting friction stir welding; before friction stir welding, steps are machined on the upper end face and the lower end face of the butt joint face of an aluminum alloy base material and the butt joint face of a steel base material in advance respectively, the butt joint face is machined to be in a sawtooth shape, the aluminum alloy base material and the steel base material form the complete steps, and the butt joint face of the aluminum alloy base material and the butt joint face of the steel base material are tightly meshed. Carbon nanotube coatings are respectively laid on an upper complete step and a lower complete step formed by the aluminum alloy base material and the steel base material in advance; a stirring needle of a friction stir welding tool adopted by the friction stir welding technology is machined into a sawtooth shape matched with the butt joint face in advance. The composite board has higher performance in the aspects of connection strength, toughness and the like, and when the composite board prepared through the method is applied to shipbuilding and ocean platform construction, hidden danger of safety construction can be avoided, and the construction efficiency is improved.

The invention belongs to the technical field of metal composite materials and hydrogen storage and transportation materials, and particularly relates to a high-strength hydrogen-embrittlement-resistant layered metal composite material for hydrogen storage and a preparation method and application of the high-strength hydrogen-embrittlement-resistant layered metal composite material. According to the preparation method, the nickel-saving austenitic stainless steel (NEASS) and the 30CrMo steel are alternately overlapped in a multi-layer mode, and the processes of vacuum electron beam welding, high-temperature hot rolling, accumulative ply rolling, multi-stage heat treatment and the like are combined, so that the composite board with the layer number reaching hundreds of layers, firm interface bonding, excellent mechanical performance and good hydrogen embrittlement resistance is prepared; the technical problem that strength, toughness and hydrogen brittleness resistance of an existing metal material in a high-pressure hydrogen environment are difficult to consider at the same time is solved. The obtained composite material has high strength, high plasticity and excellent hydrogen embrittlement resistance, and is suitable for structural materials of high-pressure hydrogen storage tanks, hydrogen conveying pipelines and other key hydrogen energy equipment.

A disclosed nondestructive testing device for internal defects of a copper-aluminum composite board comprises a base plate, the base plate is connected with a C-shaped frame through an integral moving device, the upper end and the lower end of the C-shaped frame are respectively provided with an X-ray source and a ray detector, and the X-ray source and the ray detector are oppositely arranged; a signal conversion device, a high-voltage power supply and a control host are further arranged on the bottom plate, the high-voltage power supply is connected with the X-ray power supply, and the ray detector is in electric signal connection with the control host through the signal conversion device. The X-ray principle is utilized to irradiate the copper-aluminum composite board, the density difference in the board is reflected through the X-ray imaging board, the internal defects of the board are automatically judged through an algorithm, X-rays penetrate through the detected board and do not affect or damage the board, and the non-contact detection mode is compared with a destructive detection means, so that the detection accuracy is improved. The problem that a product is damaged in the detection process is solved.

The invention relates to the technical field of wood strength detection, in particular to a strength testing device for a wood composite board and a detection method.The strength testing device comprises a base table and a driving base fixed to the base table, and is characterized by further comprising symmetrical supporting mechanisms; a driving mechanism is arranged in the driving base so as to drive the two sets of supporting frames to be close to or away from each other. A centering roller and first pressure sensor cooperation mechanism of the transverse centering mechanism is adopted, a roller driving mechanism is combined to drive a driving roller to rotate, a plate is driven to transversely move through friction force, two sets of first pressure sensors detect the pressure bearing value of the roller in real time, and rotation is stopped when the numerical values on the two sides are equal; the transverse center of the plate is aligned with the axis of the driving roller, and personal errors are eliminated.

A copper-aluminum composite plate material prepared by aluminum liquid continuous casting and a process thereof. The method includes: S1, heating an aluminum ingot to 700-800° C. and smelting for 1-3 h; S2, degassing smelted aluminum liquid, and keeping the temperature and standing; S3, texturing a copper strip, and then cleaning; S4, heating the pretreated copper strip to 200-650° C.; S5, under the protection of inert gas, continuously casting the treated aluminum liquid on the treated copper strip, performing quenching crystallization on a copper-aluminum composite material, and performing oxygen-free continuous casting; and S6, continuous rolling: rolling the continuously cast copper-aluminum composite material to obtain the copper-aluminum composite plate material prepared by aluminum liquid continuous casting.

The invention relates to a high-impact-resistance light-weight high-strength composite board and a preparation method thereof.The preparation method comprises the following steps that S1, a first glass fiber cloth is arranged between two thermoplastic polyurethane films, hot pressing is conducted, and a glass fiber cloth reinforced polyurethane film is obtained; placing the polyamide-polyether block copolymer film between two adjacent layers of glass fabric reinforced polyurethane films, and performing hot pressing to obtain a high-toughness surface layer; s2, adding the modified hollow glass microspheres, bisphenol A epoxy resin, polyurethane modified epoxy resin, dicyandiamide and an accelerant into a solvent to obtain a resin solution; immersing second glass fiber cloth into the resin glue solution, taking out the second glass fiber cloth after the second glass fiber cloth is completely immersed, and baking the second glass fiber cloth to obtain an epoxy glass fiber prepreg; s3, stacking the plurality of epoxy glass fiber prepregs to obtain a low-density core layer; and S4, stacking the low-density core layer between two adjacent high-toughness surface layers, and performing hot pressing to obtain a target product. The high-strength and high-impact-resistance building material has the advantages of light weight, high strength and high impact resistance.