79 results about "Perforated metal" patented technology

The invention discloses a polyester fiber acoustical board with high yield strength. The polyester fiber acoustical board comprises a micro-perforated metal surface layer, a gradient density polyester fiber layer, a honeycomb metal framework layer and an elastic damping bottom layer which are sequentially stacked and fixed through mucilage glue from top to bottom. A vertically-distributed metal surrounding plate is arranged around the side edge of the micro-perforated metal surface layer, the metal surrounding plate and the micro-perforated metal surface layer are of an integrally-formed structure, and the gradient density polyester fiber layer and the honeycomb metal framework layer are wrapped by the metal surrounding plate. And the honeycomb metal framework layer is fixed with the adjacent upper and lower layers through mucilage glue, and is also fixed with the metal coaming through rivets. By means of the innovative composite lamination design, the strength defect of a traditional polyester fiber acoustic board is effectively overcome. The micro-perforated metal surface layer and the integrally formed metal coaming form a rigid outer frame, so that the internal fiber layer is protected from mechanical damage, and the overall flexural rigidity is remarkably improved through the bearing effect of the metal framework.

A downspout guard having opposed sidewalls and opposed end walls connected to a top wall, all formed from material having openings therethrough, such as perforated metal. Bottom edges of the walls engage a gutter bottom wall to hold the guard in place and forcing water to flow through the guard before entering the downspout. The sidewalls can engage gutter front / back walls, further holding the guard in place. Trapped debris enhances further debris entrapment, even trapping particles smaller than the material openings.

The utility model relates to a cover plate structure, single battery and battery pack, the cover plate structure comprises a cover plate, a metal pole and a metal compression ring, the cover plate is provided with a mounting hole, the metal pole comprises a limit part and a columnar part which are connected with each other, the metal pole is mounted in the mounting hole through the welding of the columnar part and the inner side wall of the metal compression ring, and the metal compression ring is fixed on the limit part. A through hole is formed in the columnar portion of the metal pole, a groove surrounding the columnar portion is formed in the face, away from the cover plate, of the metal pressing ring, and the metal pressing ring is welded to the end, away from the limiting portion, of the columnar portion on the bottom wall of the groove. According to the cover plate structure, the metal pole and the switching piece can be conveniently welded from the outside of the battery through the through hole, the assembly process is relatively simple, after the pole and the switching piece are welded, the sealing aluminum sheet is additionally welded through the groove of the metal pressing ring, and compared with a traditional condition that a welding seam is located in a mounting hole, the sealing aluminum sheet is welded to the groove of the metal pressing ring; the sealing effect can be further improved relatively, and the liquid leakage problem is reduced.

To significantly improve the combustion of a fuel gas containing at least 95% hydrogen by volume in a gas burner (10) for heating purposes, a burner body (16) for the gas burner (10) has been proposed, which, as a burner surface (38) for the passage of a premixed fuel gas-air mixture into a combustion chamber (14), has a perforated metal surface (40) which has through holes (48) such that less than 5% of the burner surface (38) is open. wherein the through holes (48) have hole diameters D with 0.4 mm ≤ D ≤ 1.0 mm, wherein the hole diameters D and / or hole lengths of the through holes vary.

To provide a perforated panel for constructing a perforated screen which has excellent design and functionality and is of high commercial value.SOLUTION: A perforated panel is made of a metal plate having a predetermined width and a predetermined length. A main body of the metal plate is attached to a building via a mounting fixture either alone or with multiple members connected in parallel. A contour figure of a hole of any shape is set on the main body of the metal plate, in which the contour figure has a reference side of a predetermined length. The other sides are cut, leaving this reference side, and a portion surrounded by the other sides is bent at a predetermined angle with respect to a flat surface of the main body, with the reference side as a reference. This forms a hole in the main body, and the portion surrounded by the other sides becomes a protruding piece that protrudes from the flat surface of the main body.SELECTED DRAWING: Figure 1

This utility model discloses a negative pressure compressor silencer made of composite sound-absorbing material, including a negative pressure fan body and a silencer pipe fixedly installed on the air inlet end of the negative pressure fan body. An air inlet channel is fixedly installed on the inner wall of the silencer pipe, and a primary noise reduction mechanism is provided on the inner wall of the air inlet channel near the pipe opening. The primary noise reduction mechanism includes an air inlet cylinder fixedly installed on the inner wall of the air inlet channel, and multiple air inlets are opened on the outer wall of the air inlet cylinder. This utility model, through the inner ring silencer cylinder, outer ring silencer cylinder, and silencer ring cylinder of the primary noise reduction mechanism forming a multi-stage sound absorption structure, utilizes the cooperation between the silencer holes and the annular cavity to allow sound waves to reflect and diffract between different cavities, effectively absorbing mid-to-high frequency noise. The coaxial and annular array distribution design of the air inlets guides the airflow to enter evenly, reducing the generation of eddy noise. The composite structure of the perforated metal cylinder and the sound insulation felt further blocks the transmission of noise, improving the broadband noise reduction effect.

The invention relates to a metal mask supported by a glass substrate for manufacturing an organic light emitting diode display. The mask includes a glass substrate located only outside the display area, an open-cell metal layer for providing structural stability, and forming apertures for material deposition in the display area. The perforated metal layer can be formed by methods such as electroforming, sputtering, chemical vapor deposition, evaporation or atomic layer deposition, and the used metal comprises a material with a low thermal expansion coefficient, such as invar steel, super invar steel, kovar alloy, 42 alloy, nickel, tungsten, molybdenum, tantalum or rhenium. The mask supports two structural forms: a fine metal mask and an open metal mask which are respectively used for evaporation of red, green and blue sub-pixels and a common layer. The method can be used for batch processing of a plurality of micro organic light-emitting diode display substrates, and can also be used for full-coverage processing of a single active matrix organic light-emitting diode display substrate.

A method for making a cylindrical centrifuge basket according to the present disclosure includes pre-perforating a metal sheet to form a perforated metal sheet having perforations aligned along rows extending across a width of the perforated metal sheet. Each row is skewed at a prescribed nonzero skew angle relative to a surface line on the perforated metal sheet, the surface line parallel to an axis of rotation of the cylindrical centrifuge basket. The method further includes roller forming the perforated metal sheet to produce a perforated basket wall sheet, coupling a first edge of the perforated basket wall sheet to a second edge of the perforated basket wall sheet to form a cylindrical basket wall, and coupling a first end of the cylindrical basket wall to a ring, coupling a second end of the cylindrical basket wall to a baseplate, or both to form the cylindrical centrifuge basket.

An anti-noise shim (100) comprising at least a perforated metal layer (110) and at least a high temperature resistant layer (120) faced / coupled together by mechanical bonding wherein the perforated metal layer comprises through holes (111) and mechanical bonding means (112), and the high temperature resistant layer comprises fibers, a filler and a binder.

The invention discloses a helicopter rotor rubber elastic bearing vacuumizing injection molding method which comprises the following steps: S1, taking a plurality of small joints, large joints and metal spacers required for processing an elastic bearing body, carrying out sand blasting pretreatment on the small joints and the large joints, and carrying out uniform punching pretreatment on the metal spacers; according to the invention, the elastic bearing is subjected to injection molding in a vacuum environment, so that the porosity in the elastic bearing is reduced, and the tensile strength and the fatigue resistance of the elastic bearing laminated body can be remarkably improved by combining the rubber material with fibers for injection molding and the perforated metal spacer; the elastic bearing of the helicopter can better adapt to high-frequency vibration and extreme temperature change scenes, and the service life of the elastic bearing is prolonged.

A composite panel comprising a perforated metal foil for lightning strike protection, the composite panel comprising: a plurality of carbon layers; a perforated metal foil comprising a number of apertures and directly fastened to the plurality of carbon layers; and a protective layer made of a resin reinforced with fibers, the protective layer being fastened to the metal foil, wherein the perforated metal foil is embedded into the protective layer through its apertures, a free surface of the protective layer forms a top side of the composite panel, a thickness of the protective layer between the top side of the composite panel and the perforated metal foil is at least 15 micrometers, and a thickness of the perforated metal foil is not more than 30 micrometers, the plurality of apertures defines in total an open area of not more than 40% of the surface area, and a maximum distance between two opposite points on the aperture periphery is equal to or less than 3 mm.

The utility model provides a printed circuit board type heat exchanger core body with staggered winding type flow channels, which relates to the technical field of heat exchange devices and comprises a plurality of layers of metal sheets which are overlapped and welded into a whole through vacuum diffusion welding and are provided with flow channels on the surfaces. The heat exchanger core body comprises an upper cover plate with a plurality of discontinuous flow channels, a lower cover plate with a plurality of discontinuous flow channels and a perforated metal plate with a plurality of discontinuous flow channels on the two faces, and the heat exchanger core body is formed by stacking plate sheets. The upper cover plate, the perforated metal plate with the discontinuous runners on the two faces and the lower cover plate are sequentially stacked to form a unit, and the whole heat exchanger core is formed by periodically stacking a plurality of units. The cross-flow type heat exchanger aims at solving the problem that a traditional cross-flow type heat exchanger is low in heat exchange efficiency, disturbance of heat exchange working media is enhanced, and the heat exchange efficiency is improved.

The present invention relates to a method for deoxidizing tantalum powder and tantalum powder produced by the method. The method comprises separating the tantalum powder to be deoxidized from a deoxidizing agent, such as Mg powder / scrap, for example by using a perforated metal plate / screen, and vaporizing the deoxidizing agent by heating and bringing it into contact with the tantalum powder to be deoxidized.

The present invention pertains to a conductive adhesive film (10) for joining a semiconductor device and a member, said conductive adhesive film (10) comprising: a stress relief layer (1) configured from a perforated metal foil in which a through-hole is provided on the main surface of a metal foil formed of at least one metal selected from the group consisting of copper (Cu), a copper (Cu) alloy, aluminum (Al), and an aluminum (Al) alloy; a first adhesive layer (2) containing copper (Cu), tin (Sn), a bismaleimide resin, and an organic phosphine and / or an organic sulfide, sadi first adhesive layer (2) being provided on the side of the stress relief layer (1) to which the semiconductor device is joined; and a second adhesive layer (3) containing copper (Cu), tin (Sn), a bismaleimide resin, and an organic phosphine and / or an organic sulfide, said second adhesive layer (3) being provided on the side of the stress relief layer (1) facing the side to which the semiconductor device is joined.

A molten sodium / metal chloride electrochemical cell comprises an anode compartment (14) and a cathode compartment (15), each enclosed in part by a respective metal plate (11, 12), the two compartments being separated by an impermeable, sodium-ion-conducting electrolyte element. The electrolyte element comprises an impermeable glass-ceramic layer (23b) bonded by a porous and permeable glass-ceramic layer (23a) to a perforated metal sheet (16), wherein the materials of the glass-ceramic layers comprise Na5RSi4O12, where R is a rare-earth element. The element R may be Sc, Er, Y, Ho, Dy, Gd, Eu, or Sm. The porous layer (23a) and the impermeable layer (23b) may be of different chemical compositions.

The invention provides a sound absorption lamp of an all-metal fine convex micropore structure, and relates to the technical field of illumination. The box body comprises a shell frame formed by a micro-perforated metal plate, a Z-shaped resonance plate is arranged in the shell frame, the shell frame is provided with an end cover assembly, and the end cover assembly and the shell frame jointly surround the Z-shaped resonance plate; the inner space of the shell frame is divided into two acoustic chambers by the Z-shaped resonance plate; porous plate surfaces are arranged on the left side and the right side of the shell frame, and a plurality of micro-perforated holes are uniformly distributed in the porous plate surfaces; when sound waves enter the acoustic cavity through the micro-perforations, the Z-shaped resonance plate is excited to vibrate, so that air molecules in the cavity generate friction with the surface of the Z-shaped resonance plate and the inner wall of the cavity, sound energy is converted into heat energy to be consumed, and sound absorption is achieved. The beneficial effects of the invention are that the sound absorption frequency can be broadened, and the sound absorption plate is made of metal and has the advantages of environmental protection, easy surface treatment and good heat dissipation effect.

The utility model discloses a mounting structure of a sound absorption module of a side wall of a silencing place, which is simple in structure, low in material consumption and convenient to mount. Comprising a frame fixed on a side wall and a plurality of acoustic boards installed on the frame, the frame is composed of a plurality of Z-shaped keels which are parallel to one another and are arranged at intervals from bottom to top, inner side panels of the Z-shaped keels are fixedly connected to a wall body of the side wall through bolts, a triangular keel is fixedly connected to outer side panels of the Z-shaped keels, and the triangular keel is fixedly connected to the wall body of the side wall through bolts. The sound absorption plate comprises a steel wire net frame, a sound absorption material and a perforated metal buckle plate with four side plates from inside to outside, and the sound absorption material and the steel wire net frame are arranged in a space defined by the four side plates; positioning plates which are bent inwards and are used for fixing the steel wire net rack, the sound absorption material and the perforated metal pinch plate together are respectively arranged on four side plates of the perforated metal pinch plate, and each positioning plate is clamped in a corresponding mesh on the steel wire net rack. The installation efficiency is high, materials are saved, and the sound absorption wall is long in service life and good in stability.

1. The name of this design product: Perforated Metal. 2. Purpose of this design product: This design product is used for decoration or isolation netting. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture. 5. This product is a thin product, so the left view is omitted; this product is a thin product, so the right view is omitted; this product is a thin product, so the top view is omitted; this product is a thin product, so the bottom view is omitted.

Method for melt impregnation of plastic fibers (1) with a thermoplastic matrix, wherein the plastic fibers (1) are guided over a bent perforated metal sheet (2) as an impregnation section under application of a contact pressure, wherein the highly viscous, thermoplastic matrix passes through the perforations (3) of the metal sheet in order to subsequently impregnate the plastic fibers (1), characterized in that the metal sheet (2) is sealed off from a carrier tool by means of a hinge pin clamp (5) which presses the metal sheet (2) against the carrier tool (4) with a bent shape.

This application provides an automatic deburring device for the inner wall of perforated metal tubes, relating to the field of metal tube processing technology. It includes a worktable and a conveyor rail fixedly mounted on the worktable for carrying the perforated metal tubes. One end of the conveyor rail is provided with an intermittent feeding component for placing the perforated metal tubes on the conveyor rail and a pushing component for pushing the perforated metal tubes forward. The other end of the conveyor rail is provided with a grinding component for grinding the inner wall of the perforated metal tubes and a unloading component for collecting the perforated metal tubes. The feeding component and the unloading component are provided with a fixing component for fixing the perforated metal tubes. This device can automatically feed, push, fix, grind, and unload perforated metal tubes, improving the automation level of the device, reducing manual operation, lowering labor intensity, and increasing production efficiency. The components work together to ensure the continuity and stability of the processing process.

The invention relates to a construction method of a complex glass-modeling perforated metal plate double-layer curtain wall, in particular to a steel structure fixing aluminum alloy keel efficient installation structure, a keel and an aluminum alloy curtain wall are fixedly connected through a fixing screw rod, efficient installation is conveniently achieved, the aluminum alloy curtain wall is convenient and fast to install and position, operation is easy, and time used for installation is short. In the metal plate installation technology, an embedded fixing plate is connected with a sealing protection plate and a metal steel plate, so that the connecting position of the metal steel plate is prevented from being exposed to the outside, and the metal steel plate is prevented from being corroded; the welding technology of the lower round steel and the steel structure is achieved by forming the groove, operation is easy and convenient, and installation efficiency is high; the long angle steel is welded to one side of the steel structure girder, the top end of the long angle steel is connected with the short angle steel, an accurate lofting and positioning structure is formed, carrying and construction operation are convenient, large-area lofting is conducted firstly, then accurate positioning is conducted, and a sufficient working face is provided for follow-up installation.

The utility model provides a perforated plate section bar combined type grating decoration frame, which is characterized in that vertical edges on the inner side and the outer side of a perforated metal plate on two side surfaces of the grating decoration frame are respectively connected with a U-shaped connecting piece and a Z-shaped connecting piece in a hidden manner, and the U-shaped connecting piece and the Z-shaped connecting piece are respectively inserted into an inner opening section bar and an outer opening section bar and are connected through screws; the upper end and the lower end of the inner opening profile and the upper end and the lower end of the outer opening profile are connected to the connecting structures at the upper end and the lower end respectively through the inner opening steel adapting pieces and the outer opening steel adapting pieces at the upper end and the lower end, and all the connecting screws are connected in a hidden mode. The processing and mounting quality control is easy, the replaceability is good, and the like, and the grating decoration frame has wide application space and good popularization prospect in the design and mounting of the grating decoration frame in the field of constructional engineering.

The invention belongs to the technical field of disaster early warning and monitoring devices, particularly relates to a landslide disaster early warning and monitoring device and a method thereof, and aims to solve the problems that an existing early warning and monitoring device only has a monitoring function in use, and the time interval from early warning of landslide disasters to occurrence of the landslide disasters is short. In order to solve the problem that a monitoring device which only has an alarm function and cannot intervene in the landslide process cannot provide longer evacuation time for personnel and cause loss of personnel and property, the invention provides the following scheme that the monitoring device comprises two symmetrical mounting rods, and the opposite sides of the two mounting rods are fixedly connected with the same perforated metal plate. According to the landslide disaster early warning and monitoring device and method disclosed by the invention, the mounting rods can be quickly connected together to form a whole when the device monitors the occurrence omen of the landslide disaster, and an integral protection structure is formed while an early warning is given out to temporarily block the upcoming landslide disaster; and more sufficient transfer time is provided for the masses and properties.

The present invention provides a concave metal plate unit based on the external hanging of a plane curtain wall. When the plane component-type curtain wall is installed, it directly passes through the interlayer panel from the main structure, and the external hanging has a strong load-bearing capacity and a three-dimensionally adjustable transfer system. The concave perforated metal plate unit is processed and assembled in the factory by various aluminum profile components, modeling metal plates and fasteners, and is integrally hung on the external hanging transfer system on site through a hanging system, and an anti-seismic anti-slip and anti-side sliding device is also provided. The present invention has the advantages of complete and beautiful effect, reasonable structural force, safety and reliability, superior waterproof performance, simple and convenient processing and installation, simple and easy quality precision control, strong adjustability, good replaceability, strong applicability, good economy, etc., and has a good prospect for promotion and application in the field of building curtain walls.

The utility model relates to the technical field of fresh flower preservation, in particular to a modified atmosphere preservation packaging device for fresh cut flowers, which comprises a packaging box body, a perforated metal plate arranged on the surface of the top end of the packaging box body, a pedicel shearing device arranged on the surface of the top end of the perforated metal plate, and preservative film roller transmission devices arranged on two sides of the top end in the packaging box body. A preservative film heat sealing device, a fixing spring clamp, a bundling device, a vacuum pump, a vacuumizing device, a gas filling device and a pump body are arranged on one side of the surface of one side of the supporting frame body from top to bottom, an exhaust port is formed in one end of the vacuum pump, and a gas cylinder connecting pipe is arranged on the surface of the top end of the pump body. The cut flowers adopt the modified atmosphere fresh-keeping film air bag technology, mechanical damage to the cut flowers in the transportation process is avoided to the maximum extent, the loss caused by the mechanical damage is reduced, the production cost is reduced, and the economic benefit is improved.

The utility model provides a low negative pressure side wing diversion wall for airplane test run, which comprises a diversion structure surrounding an airplane, the diversion structure comprises a tail diversion wall corresponding to the tail of the airplane and side wing diversion walls corresponding to side wings of the airplane, and the side wing diversion walls are integrally parallel to or slightly inclined to the axial direction of an airplane body and are connected with the ground. The side wing flow guide wall comprises a windward side and a leeward side, the windward side is formed by continuously splicing a plurality of metal plates, the leeward side is connected with a supporting frame, and the bottom of the supporting frame is connected with a concrete ground anchor bolt; a plurality of silencing ducts are further arranged in the side wing flow guide walls, and the opening ends of the silencing ducts penetrate through the windward side and face the aircraft; the noise elimination ducts are arranged on the flow guide walls of the side wings, airflow can be introduced, the internal and external pressure difference of the flow guide walls is reduced, the test run environment of an airplane is facilitated, and meanwhile the influence of noise is greatly reduced through the cooperation of the perforated metal plates in the noise elimination ducts and the resistive sound absorption materials.

Modular built-in dish rack for housing dishes comprising a perimeter framework defining a frame, a perforated plate, a plurality of drip trays for collecting run-off water and a plurality of drainage grids. The perforated plate, housed in the framework, defines a separation of the frame into a plurality of subsections. In each subsection, a tray is housed on top of which a respective drainage grid is arranged. The drainage grids are interchangeable. In particular, the dish rack comprises, on a first inner surface of a first pair of opposing sides comprised in the framework, housing profiles adapted for the sliding insertion of the perforated sheet metal into the framework.

The utility model provides a combined type ventilating and brightening decorative framework based on energy-saving unit curtain wall overhanging. The two wings of the inner side of a transverse triangular supporting piece are connected with F-shaped vertical frames on the two sides, and the outer side of the transverse triangular supporting piece and a middle decorative profile are connected and assembled to form a triangular prism supporting framework. The left perforated metal plate and the right perforated metal plate are installed on the left side face and the right side face of the triangular prism supporting framework, and the lamp groove lamp strip is fixed in a groove formed after the perforated metal plates and the triangular prism supporting framework are assembled and then integrally connected to the outwards-extending wings extending out of the outer end faces of the unit stand column and the unit middle column. The energy-saving ventilation opening window has the advantages of being safe, reliable, good in visual effect, good in energy-saving effect, easy and fast to machine and install, easy to control installation precision and quality, easy to replace and maintain, good in manufacturability, good in economical efficiency, high in applicability and the like, integrates the functions of decoration, ventilation and brightening, and is suitable for popularization and application. And good popularization and application prospects are achieved in design and installation of ventilation and brightening decorative curtain walls in the field of constructional engineering.

To significantly improve the combustion of a fuel gas containing at least 95 vol% hydrogen in a gas burner (10) for heating purposes, a burner body (16) for the gas burner (10) has been proposed, which, as a burner surface (38) for the passage of a premixed fuel gas-air mixture into a combustion chamber (14), has a perforated metal surface (40) which has through-holes (48) such that less than 5% of the burner surface (38) is open, wherein the through-holes (48) have hole diameters D with 0.4 mm ≤ D ≤ 1.0 mm, wherein the hole diameters D and / or hole lengths of the through-holes vary.

A method for making a cylindrical centrifuge basket according to the present disclosure includes pre-perforating a metal sheet to form a perforated metal sheet having perforations aligned along rows extending across a width of the perforated metal sheet. Each row is skewed at a prescribed nonzero skew angle relative to a surface line on the perforated metal sheet, the surface line parallel to an axis of rotation of the cylindrical centrifuge basket. The method further includes roller forming the perforated metal sheet to produce a perforated basket wall sheet, coupling a first edge of the perforated basket wall sheet to a second edge of the perforated basket wall sheet to form a cylindrical basket wall, and coupling a first end of the cylindrical basket wall to a ring, coupling a second end of the cylindrical basket wall to a baseplate, or both to form the cylindrical centrifuge basket.