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30results about How to "Uniform pressure transmission" patented technology

Multi-parameter online monitoring system and method for hot-pressing solidification process of composite material

PendingCN107941283AHigh practical valueShorten the monitoring cycleMeasurement devicesFiberGrating
The invention provides a multi-parameter online monitoring system and method for a hot-pressing solidification process of a composite material, and the system comprises a temperature sensor, an FBG (fiber bragg grating) sensor, an FBG demodulation instrument, a pressure sensor, a data recorder, and an upper computer. A multi-parameter monitoring module operating in the upper computer executes themonitoring. The monitoring method comprises a step of temperature measurement, a step of pressure monitoring, a step of strain monitoring, and a step of stress monitoring. The system and method can achieve the multi-parameter real-time coordinative online monitoring, is high in accuracy, is high in sensitivity, and can continuously and truly reflect the actual conditions of various parameters of the composite material in the hot-pressing solidification process.
Owner:CENT SOUTH UNIV

Straight conveyor belt finger-model connector and preparation method thereof

ActiveCN103072786AIncreased warp strengthHigh warp strengthConveyorsBeltsAdhesive cementStructural engineering
The invention belongs to the technical field of a rubber conveyor belt product, and particularly relates to a straight conveyor belt finger-model connector and a preparation method thereof. The straight conveyor belt finger-model connector comprises a straight finger-model skeleton structure, wherein the straight finger-model skeleton structure comprises a straight canvas layer; a rubberizing layer is arranged on the surface of the straight finger-model skeleton structure; a textile layer playing a reinforcement effect is arranged on the rubberizing layer; and a coverage rubber layer is arranged on the textile layer. The preparation method of the straight conveyor belt finger-model connector comprises the following steps of (1) stripping coverage adhesive; (2) removing residual adhesive; (3) cutting a finger model; (4) coating adhesive cement; (5) splicing the finger model; (6) forming a finger-model connector; and (7) vulcanizing the finger-model connector. Due to the adoption of the straight conveyor belt finger-model connector, the strength of the connector is improved; and the preparation method is simple and easy to operate.
Owner:YANKUANG GRP CO LTD +1

Forming method suitable for T-shaped and L-shaped composite material wall plates

The invention belongs to the technical field of forming of composite materials, and relates to a forming method suitable for T-shaped and L-shaped composite material wall plates. A forming mode combining a soft film positioning plate and a soft film is adopted, a fit clearance does not exist, pressure transmission is uniform, and the internal quality of formed wall plates is good. There are only afew molds in a vacuum bag, heat transferring is uniform, and the uniformity of a temperature field is good. The number of molds entering a tank is small, a soft film forming mold is low in precisionand does not need to enter the tank, and the overall mold cost is low. The assembling clearance is small, the forming quality is good, and the forming method is suitable for wall plates with large skin thickness change or large skin shape change. By means of the forming method suitable for T-shaped and L-shaped composite material wall plates, the internal quality of composite material wall platesformed through the method is high, studs are high in position precision, and the forming method is particularly suitable for forming wall plates with complex surfaces and many variable-thickness areas, and lays a certain technical foundation for development of composite materials.
Owner:AVIC COMPOSITES

Wall board structure of fixed hydraulic balance extra large storage tank

ActiveCN102229377ASolve the problem of running down rainwaterReduce construction costsLarge containersEngineeringBoard structure
The invention relates to a wall board structure of a fixed hydraulic balance extra large storage tank. The structure comprises an inner tank and an outer tank, wherein the inner tank is used for storing materials; the outer tank is wrapped by the inner tank; a distance is arranged between the outer side wall of the inner tank and the inner side wall of the outer tank so as to form an annular space for containing liquid for balancing pressure; and the structure is characterized in that a plurality of structural steel connecting pieces for improving the bearing capability of the side wall of the inner tank are arranged between the inner side wall of the outer tank and the outer side wall of the inner tank. Compared with the prior art, the invention really realizes the manufacturing of an extra storage tank, has the advantages of low the manufacturing cost, and ensures the welding quality.
Owner:CHINA PETROLEUM & CHEM CORP +2

Production process of hot-pressing tympan paper taking pressing copper-clad plate as cushion layer as well as application of hot-pressing tympan paper

Hot-pressing tympan paper taking a pressing copper-clad plate as a cushion layer takes natural-color needlebush pulp, natural-color broadleaf wood pulp and kraft paper leftover materials as fiber rawmaterials; short fiber free pulping is adopted; the current of a pulping machine, the beating degree and the wet weight are controlled; finally, the quantity is 192+ / -4 g / m<2>, the thickness is 0.320+ / -0.02 mm, the tensile strength is more than or equal to 10 KN / m, the air permeability is more than or equal to 10 [mu]m / pa*s, the folding resistance is more than or equal to 10 times, the water-absorbing property is more than or equal to 100 mm / min, and the tightness is controlled to 550 to 600 kg / m<3>. Through cell cavity filling, on one hand, the fiber raw materials are reduced and the cost isgreatly saved; and on the other hand, fillers are added into the cell cavities, so the paper strength is not influenced. Therefore, the hot-pressing tympan paper has double advantages of improving theproperties of the tympan paper and reducing the cost.
Owner:建滔(佛冈)绝缘材料有限公司

Construction method of inclined column conversion frame shear wall structure

The invention discloses a construction method of an inclined column conversion frame shear wall structure. The construction method comprises the following steps that inclined strut assemblies are installed on a to-be-constructed plane; after the inclined strut assemblies are installed, steel supporting beams are installed at the inclined strut assemblies to form a supporting structure, concrete is poured on the supporting structure, and the inclined strut assemblies, the steel supporting beams and the concrete are combined to form a shear wall; after construction of the shear wall is completed, inclined columns are installed on the lower columns outside the shear wall; after the batter post is installed, at least two supporting beams are installed between the batter post and the shear wall, and any two supporting beams are arranged in a spaced mode so as to support the batter post. And the diagonal bracing assembly improves the shear bearing capacity of the shear wall. The bearing force transmitted by the upper column is transferred into the force in the horizontal direction through the inclined column, the force is transmitted into the shear wall through the supporting beam, the force is transmitted and dispersed in cooperation with the inclined strut assembly, the overall structure is simple and reasonable, the shear bearing capacity is high, the connection reliability is ensured, and the problem that concrete cracks are caused by large horizontal force generated by inclination of the inclined column is solved.
Owner:广州市设计院集团有限公司

Forming device and forming method for T-shaped composite material part with high resin fluidity

The invention discloses a forming device and method for a T-shaped composite material part with high resin fluidity, and relates to the field of composite material part manufacturing. The forming device comprises a bottom plate, a fixed core mold, a movable core mold, a uniform pressing plate, a positioning adjusting assembly and a plurality of sealing rubber strips, the fixed core mold is fixed on the bottom plate, the movable core mold is movably installed on the bottom plate through the positioning adjusting assembly, a first inverted-L-shaped groove is formed in the side, close to the movable core mold, of the fixed core mold, a second inverted-L-shaped groove is formed in the side, close to the fixed core mold, of the movable core mold, the first inverted-L-shaped groove and the second inverted-L-shaped groove are symmetrically formed and are the same in structure, the multiple sealing rubber strips are used for being arranged on the bottom of the vertical section and the periphery of the horizontal section of the T-shaped composite material part with high resin fluidity, and the uniform pressing plate is used for being placed on the top of the T-shaped composite material part with high resin fluidity. The forming device and the forming method can effectively control the flowing behavior of the resin in the curing process, ensure the internal quality, and are simple to use, convenient to demold and low in cost.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Preparation method of metal bipolar plate of proton exchange membrane fuel cell

The invention relates to the technical field of fuel cells, and provides a preparation method of a metal bipolar plate of a proton exchange membrane fuel cell. According to the invention, the metal bipolar plate is prepared by adopting a method of firstly coating, then welding and finally hydroforming, so that the uniform thickness of the coating can be ensured, and the consistency of corrosion resistance and contact resistance of each part of the bipolar plate is ensured; and when the two layers of metal plates are welded, one non-welding area is reserved on each of the two sides, during hydraulic forming, the non-welding areas serve as liquid injection holes to inject high-pressure liquid between the two layers of metal plates, under the action of hydraulic pressure, the upper layer of metal plate is attached to the cavity wall of an upper mold plate, and the lower layer of metal plate is attached to the cavity wall of a lower mold plate, so a cathode plate and an anode plate are formed at the same time. When the method is adopted for hydraulic forming, the coating cannot be damaged, the formed runner is high in precision, the product percent of pass is high, and simultaneous forming of the cathode plate and the anode plate is achieved for the first time.
Owner:UNIV OF JINAN +1

Mold and thermal compounding process used for arc-shaped plate of metal composite curtain wall

The invention discloses a mold used for an arc-shaped plate of a metal composite curtain wall. The mold comprises an arc mold surface, bearing platform supports, a mold base and a mold surface bearingplatform. The invention further discloses a thermal compounding process used for the arc-shaped plate of the metal composite curtain wall. According to the mold and the thermal compounding process used for the arc-shaped plate of the metal composite curtain wall, the mold is designed to be small, exquisite and flexible, so that automatic production assembly line work is achieved cooperatively, and the automation degree is effectively improved; the whole mold is convenient to assemble and disassemble,90% ore more of materials can be used repeatedly, and the rest of the materials can be used again after being processed for the second time, so that material waste of the mold is minimized, and the manufacturing cost is reduced; the whole mold is made from metal materials, so that the heat conductivity is good, the unique cavity design ensures direct conduction of the temperature, it is guaranteed that heat is efficiently transferred onto products from a heating device through a hot-pressing compounding device, and the pressing time of the products is shortened; and through the structure of the mold and the point-type fixing mode of the edges, uniform release of stress during thermal expansion and cold contraction is guaranteed, and local deformation is avoided.
Owner:SHANDONG HONGXING NEW MATERIAL TECH CO LTD

Forming tool and method for preparing rectangular hollow composite tubular member by using forming tool

ActiveCN111873478ARealize pavementAvoid manufacturing processTubular articlesStructural engineeringMechanical engineering
The invention relates to a forming tool and a method for preparing a rectangular hollow composite tubular member by using the forming tool. The forming tool comprises a body and an auxiliary piece. The body comprises a bottom plate, a left side baffle, a right side baffle and an upper baffle which are matched with one another to form a rectangular cavity. The upper ends of the left side baffle andthe right side baffle are both designed to be in a corner form extending inwards. The left side baffle and the right side baffle are detachably connected with the bottom plate, and the upper baffle is detachably connected with the left side baffle and the right side baffle. The auxiliary piece comprises a left auxiliary stop block, a right auxiliary stop block and an auxiliary flat plate. The left auxiliary stop block and the right auxiliary stop block are detachably connected with the upper end of the left side baffle and the upper end of the right side baffle respectively. The auxiliary flat plate serves as an independent piece to be placed in the rectangular cavity, and when the auxiliary flat plate translates to the upper side, the left side and the right side of the auxiliary flat plate can be clamped by the corners of the left side baffle and the right side baffle, and the length of the auxiliary flat plate is not smaller than that of the bottom plate. By means of the forming tool, the high-quality rectangular hollow tubular member can be obtained.
Owner:AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH

Flexible neodymium-iron-boron magnet as well as preparation method and application thereof

The invention discloses a flexible neodymium-iron-boron magnet as well as a preparation method and application thereof. The preparation method of the flexible neodymium-iron-boron magnet comprises thefollowing steps: mixing neodymium-iron-boron magnetic powder, rubber and auxiliary materials; crushing and tabletting the mixed material to obtain a sheet; carrying out heating and magnetic field orientation on the sheet; and calendering, vulcanizing and carrying out surface treatment to obtain the flexible neodymium-iron-boron magnet. Magnetic field orientation is carried out on the high-temperature neodymium-iron-boron sheet by heating the sheet, the magnetic performance of the flexible neodymium-iron-boron magnet can be effectively improved, and the obtained flexible neodymium-iron-boron magnet has good magnetic performance, mechanical performance and corrosion resistance.
Owner:GUANGZHOU GOLDEN SOUTH MAGNETIC MATERIAL

Machining method of butterfly-shaped composite material sandwich part

The invention discloses a machining method of a butterfly-shaped composite material sandwich part. The butterfly-shaped composite material sandwich part is composed of an upper base plate, a lower base plate, an upper panel, a lower panel, a core material and a filling block; the above five-membered structure is positioned and fixed through appearance design and pin rods; the upper base plate, thelower base plate and a composite material process base plate are formed by milling a same composite material blank plate, numerical control datum holes and positioning holes are adopted for milling forming at the same time, the relative positions are accurate, and the secondary positioning and milling precision is high after part gluing is completed.
Owner:XIAN AIRCRAFT IND GROUP

A molding tool and a method for preparing a rectangular hollow composite material tubular member using the molding tool

ActiveCN111873478BRealize pavementAvoid manufacturing processTubular articlesStructural engineeringMechanical engineering
The invention relates to a forming tool and a method for preparing a rectangular hollow composite material tubular member by using it. The forming tooling includes a main body and auxiliary parts; the main body includes a bottom plate, a left side baffle, a right side baffle and an upper baffle, and the four cooperate with each other to form a rectangular cavity; the upper ends of the left side baffle and the right side baffle are designed as The corner form extending inward; the left side baffle and the right side baffle are detachably connected with the bottom plate, and the upper baffle is detachably connected with the left side baffle and the right side baffle; the auxiliary parts include left auxiliary block, right Side auxiliary block and auxiliary plate; the left auxiliary block and the right auxiliary block are detachably connected with the upper end of the left baffle and the upper end of the right baffle respectively; the auxiliary plate can be placed in a rectangular cavity as an independent piece and when When moving to the top, the left and right sides can be blocked by the corners of the left side baffle and the right side baffle, and the length is not less than the length of the bottom plate. The forming tool can obtain high-quality rectangular hollow tubular members.
Owner:AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH

C-beam composite material forming tooling and composite material C-beam forming method

The invention discloses a C-shaped beam composite material forming tool and a composite material C-shaped beam forming method. The forming tool comprises a male mould part and an auxiliary cover plate, wherein the two sides of the male mould part are inwards sunken to form sunken regions; the auxiliary cover plate covers the outer side of the male mould part; and the upper side end of the male mould part, the two inner sunken regions and the auxiliary cover plate define a cavity for placing a prepreg part. The forming method comprises the following steps of: coating a de-molding agent for composite material manufacturing on the male mould part; pre-soaking and automatically cutting according to a process expanded view; spreading prepreg on the male mould part in a layer-shaving and layingmode to form the prepreg part; placing a gas guide material on the outer side surface of the prepreg part; performing vacuum compaction treatment; covering the auxiliary cover plate at the peripheralside of the male mould part; and completing curing of a C-shaped beam through a vacuum bag pressing method. A manufactured C-shaped beam, an R angular ea, interior and surface quality, dimension precision and the like achieve the perfect requirements, and the auxiliary cover plate can be repeatedly utilized for many times, so that production efficiency is improved.
Owner:深圳市泰格尔航天航空科技有限公司

An automated equipment for culvert pipe production

The invention discloses an automatic equipment for culvert pipe production, which belongs to the field of culvert pipe production equipment. The automatic equipment for culvert pipe production uses the heat of water vapor to increase the temperature of nitrogen in the expansion cavity in the link of water vapor curing, thereby increasing its temperature. Pressure and volume, use the expansion pad to press the attachment pad, and press the repair material block melted by the high temperature of water vapor, so that the repair material block penetrates into the groove on the inner wall surface of the main body of the cement culvert pipe, and then in the cooling process, on the inner wall of the main body of the cement culvert pipe A smooth protective layer is formed on the surface, and the formation of the protective layer is more uniform through the arrangement of elastic cavities, elastic balls and filling fiber clusters in the expansion pad, and the surface treatment of the inner wall of the culvert can be realized to make the surface of the culvert smooth and not easy Excessive wear is formed locally on the inner wall of the culvert, and it is not easy to cause the surface treatment layer to peel off from the inner wall of the culvert under the washing of running water, so as to ensure the normal service life of the culvert.
Owner:张家界涵睿新材料科技有限公司

Pushing device for sunken vertical shaft

The invention discloses a pushing device for a sunken vertical shaft, relates to the technical field of vertical shaft construction equipment, and aims to solve the problems that in the prior art, a vertical shaft inclines due to non-uniform stress, and even an open caisson cannot sink in a severe condition. According to the technical scheme, the pushing device is characterized by comprising a vertically-arranged oil cylinder and a supporting frame, and the bottom of a piston rod of the oil cylinder is connected with a supporting shoe; a bearing seat is arranged at the bottom end of a piston rod of the oil cylinder, a spherical groove is formed in the bottom wall of the bearing seat, a hemispherical bearing arranged in the spherical groove and in running fit with the bearing seat is connected to the top wall of the supporting shoe, and the piston rod and the supporting shoe are fixed through a double-end stud penetrating through the bearing seat and the hemispherical bearing; and the double-end stud is sleeved with a disc spring located between the supporting shoe and a locking nut, and the locking nut abuts against the supporting shoe through the disc spring. The vertical shaft posture can be adjusted, downward additional force is increased, soil friction force is overcome in an auxiliary mode, and smooth vertical shaft construction is facilitated.
Owner:XCMG KAIGONG HEAVY IND NANJING

Fuel cell bipolar plate production method

ActiveCN114050288AHydraulic bulging step facilitatesNo deformationFinal product manufactureFuel cellsFuel cellsEngineering
The invention discloses a fuel cell bipolar plate production method, and solves the technical problems of high cost, long period and low bipolar plate forming precision of the existing production method. According to the fuel cell bipolar plate production method, firstly, holes are formed in substrates, and the holes serve as liquid injection holes in a subsequent hydraulic bulging step; the two substrates are welded into a whole according to a set welding track, the welding track completely coincides with a welding line in a bipolar plate, the two substrates are divided into a set number of closed areas by the welding line, and therefore a two-plate three-field structure is formed; and each closed area comprises at least one hole, so that the subsequent hydraulic bulging step can be conveniently carried out. By injecting liquid between the two substrates through the holes, and carrying out hydraulic forming, a flow channel on the bipolar plate and a structure at a fluid inlet and a fluid outlet. are formed. By removing redundant parts of the substrates after hydraulic forming, each fluid inlet / outlet is formed . The integrated forming method is adopted, the production cost is low, the production efficiency is high, and the bipolar plate forming precision is high.
Owner:DONGFENG MOTOR GRP

Carbon fiber reinforced aluminum alloy layer pipe component forming process and forming mold

ActiveCN113787733ASolve forming problemsSolve secondary processing difficultiesTubular articlesCarbon fibersMachining
The invention discloses a carbon fiber reinforced aluminum alloy layer pipe component forming process and a forming mold. A process route of 'heat treatment of aluminum alloy inner and outer pipe blanks, forming of an aluminum alloy outer pipe blank soft mold, layered laying of carbon fiber prepreg and outer layer aluminum alloy pipe forming parts, composite pressing of carbon fiber reinforced aluminum alloy layer pipe pre-forming parts, and mold unloading' is provided for fiber metal layer pipe component forming; a delicate composite forming process can be developed according to plastic performances and metallurgical bonding performances of different series of aluminum alloys; a layer pipe component composite forming integrated preparation scheme is realized; the process is particularly suitable for preparing fiber metal layer pipe components with special-shaped sections; the forming problem is solved when parts are compounded; the problem of secondary machining difficulty of fiber metal layer pipes is solved; the application range of fiber metal composite materials is widened; and references are provided for forming of fiber metal layer pipe composite materials in complex shapes.
Owner:YANSHAN UNIV

Wall board structure of fixed hydraulic balance extra large storage tank

ActiveCN102229377BSolve the problem of running down rainwaterReduce construction costsLarge containersEngineeringBoard structure
The invention relates to a wall board structure of a fixed hydraulic balance extra large storage tank. The structure comprises an inner tank and an outer tank, wherein the inner tank is used for storing materials; the outer tank is wrapped by the inner tank; a distance is arranged between the outer side wall of the inner tank and the inner side wall of the outer tank so as to form an annular space for containing liquid for balancing pressure; and the structure is characterized in that a plurality of structural steel connecting pieces for improving the bearing capability of the side wall of the inner tank are arranged between the inner side wall of the outer tank and the outer side wall of the inner tank. Compared with the prior art, the invention really realizes the manufacturing of an extra storage tank, has the advantages of low the manufacturing cost, and ensures the welding quality.
Owner:CHINA PETROLEUM & CHEM CORP +2

High-density ceramic material as well as preparation method and application thereof

ActiveCN113185290AHigh densityAchieve high entropyChemical compositionKiln
The invention provides a high-density ceramic material as well as a preparation method and application thereof, and belongs to the technical field of ceramic materials. The chemical composition of the high-density ceramic material provided by the invention is La(Mg0.4-xTMxFe0.2Co0.2Ni0.2)Al11O19, and 0 < x < = 0.2. According to the preparation method of the high-density ceramic material, forming is conducted in a staged positive and negative pressure maintaining mode, the density of a green body can be improved, and then the density of a ceramic sample is improved; according to the invention, by adopting a forward and reverse two-way sequential pressurization mode, the non-uniformity of the density of the green body along the vertical direction can be eliminated, so that the density of the green body is further improved; and the ceramic material is pure in phase, the density is higher than 95%, the surface is free of micro cracks, the interior is free of micro holes, and the ceramic material can be widely used as a thermal protection material for aerospace crafts and a lining material for industrial kilns.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Pressure-equalizing type diamond synthesis device and diamond synthesis method based on device

The invention discloses a pressure-equalizing type diamond synthesis device and a diamond synthesis method based on the device. The pressure-equalizing type diamond synthesis device comprises a cubic apparatus, wherein the concave arc-shaped top pressing surface of each top hammer forms a spherical top pressing cavity; a pair of opposite top hammers is provided with a conductive electrode respectively; and the conductive electrode is isolated from the corresponding top hammer. The pressure-equalizing type diamond synthesis device further comprises a spherical raw material synthesis block made of graphite and a catalyst, wherein a spherical pyrophyllite synthesis bowl matched with the spherical top pressing cavity is arranged on the raw material synthesis block; a conductive communicating device corresponding to the conductive electrode and the raw material synthesis block are arranged on the pyrophyllite synthesis bowl; the raw material synthesis block and the pyrophyllite synthesis bowl are spherical and matched with each other; the top pressing surface of the top hammer has a concave arc shape matched with the top hammer; the top hammers apply pressure to the raw material synthesis block from six directions; the pressure in the spherical top pressing cavity is uniform; any angle of the raw material synthesis block is extruded uniformly; when the raw material synthesis block are electrified and heated, the raw material synthesis block has high resistance value and is heated quickly and uniformly; and the synthesis efficiency of the diamond is improved.
Owner:山东日能超硬材料有限公司
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