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

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.

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.

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.

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.

The invention provides a co-curing forming technological method for a composite fuselage frame body with ribs added to the two sides. The method comprises the steps of 1, manufacturing a soft mould forming tool; 2, manufacturing a soft mould; 3, laying, attaching and assembling the T-shaped ribs; 4, positioning the ribs of a first side; 5, laying and attaching a laminated board; 6, conducting overturning and positioning; 7, positioning the ribs of a second side; 8, making vacuum bags; 9, overturning and fixing a rigid forming tool; 10, conducting curing; and 11, conducting demoulding. By means of the co-curing forming technological method, the laminated board and the ribs at the two sides can be co-cured; curing of all components can be completed through one-step potting; manufacturing cost is lowered; the manufacturing process is simplified; and product quality can also be guaranteed.

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.

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.

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.

The invention discloses a multipurpose fluid pressing and discharging device and a pressing and discharging method; wherein an elastic bag is sealed in a fluid charging and discharging valve, or sealed on a fluid charging and discharging port of an outer box body, and the fluid charging and discharging valve is arranged on the fluid charging and discharging port of the outer box body. The upper end of the outer box body is provided with an air hole or an air adjusting valve and a cleaner. The device and the pressing and discharging method utilizes the expansion and rebound extrusion force of an elastic body as well as the stored fluid and the fluid pressure to facilitate the pressure not reduced with the reduction of capacity when discharging fluid, which solves the problems existing in the prior art. The invention is widely used in sanitary wares, fire fighting, sprinklers, automobile washing, sanitation and cleanness, fire extinguishers, water consumption electric appliances, various cylinders, pressure power drive, storage and transportation of fluid and other fields. The invention has the advantages of simple structure, small volume, light weight, low cost and convenient use, etc.

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.

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.

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.

The invention discloses energy-saving engineering machinery hydraulic oil. The energy-saving engineering machinery hydraulic oil is prepared from, by weight, 0.2-0.9 part of tricresyl phosphate, 0.8-1.2 parts of antiwear agent, 4-6 parts of benzotriazole octadecylamine salt, 2-4 parts of ethylene glycol oleate, 75-85 parts of hydrogenated styrene isoprene copolymer, 1.5-2.5 parts of monoene succinimide, 1.5-2.5 parts of 2,5-di-tert-butylhydroquinone, 2.5-3.5 parts of 4,4'-dioctyl diphenylamine, 4-8 parts of polymethacrylate, 0.02-0.04 part of dimethicone and 850-950 parts of base oil. The energy-saving engineering machinery hydraulic oil has good wear resistance and can provide a lubrication guarantee in time at different working stages; equipment runs stably, pressure is evenly transferred, friction and abrasion are reduced, temperature rise is low, heat dissipation is rapid, power losses are reduced, energy consumption is reduced, and the oil replacement period is prolonged. The energy-saving engineering machinery hydraulic oil is suitable for hydraulic systems of various kinds of industrial equipment, engineering machinery, metallurgical machinery and the like.

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.

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.

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.

The invention discloses a processing method for a butterfly-shaped composite material sandwich part. The part is composed of an upper backing plate, a lower backing plate, an upper panel, a lower panel, a core material and a filling block. The structure of the five parts is fixed by shape and pin positioning. The upper and lower backing plates and the composite material process backing plate are milled from the same composite material wool board. The numerical control reference hole and positioning hole are used to mill and cut at the same time. The relative position is accurate, and the parts The secondary positioning milling after gluing is completed has high precision.

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.

The invention relates to the technical field of fuel cells, and provides a method for preparing a metal bipolar plate of a proton exchange membrane fuel cell. The invention adopts the method of first coating, then welding, and finally hydroforming to prepare the metal bipolar plate, which can ensure uniform coating thickness, and ensure the consistency of corrosion resistance and contact resistance in all parts of the bipolar plate; the invention welds two layers of metal Leave an unwelded area on each side of the plate. During hydroforming, the unwelded area is used as a liquid injection hole to inject high-pressure liquid between the two metal plates. Under the action of the hydraulic pressure, the upper metal plate and the upper template The cavity wall is attached, and the lower metal plate is attached to the cavity wall of the lower template, so that the cathode and anode double plates are formed at the same time. Adopting the method of the invention to carry out hydroforming does not cause damage to the coating, the formed flow channel has high precision, and the product qualification rate is high, and the invention realizes the simultaneous forming of the cathode and anode double plates for the first time.

The invention provides an IGCT packaging structure, which includes a ring-shaped gate, a connecting part, an elastic supporting part and an external connection ring of the gate. Wherein, the top and the bottom of the connection part are respectively connected with the ring-shaped gate electrode and the outer ring of the gate electrode, and the elastic supporting part is located in the connection part. The IGCT packaging structure provided by the present invention can simplify the packaging process while ensuring uniform pressure transmission, improve packaging efficiency, and effectively shorten the detour length of the commutation circuit, thereby effectively reducing the IGCT packaging structure of the stray inductance of the commutation circuit.

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.

The invention provides a high-density ceramic material and its preparation method and application, belonging to the technical field of ceramic materials. The high-density ceramic material provided by the invention has a chemical composition of: La(Mg 0.4‑x tm x Fe 0.2 co 0.2 Ni 0.2 ) Al 11 o 19 , where TM is Cu or Zn; 0