1791 results about "Thin sheet" patented technology

The invention belongs to the technical field of two-dimensional materials, and particularly relates to a preparation method of a corner heterojunction. According to the preparation method, when the two-dimensional material sheet is prepared, based on the characteristics of smooth surface and high viscosity of the hydrophilic polymer layer, a large-area two-dimensional material can be stripped from the silicon substrate with the hydrophilic polymer film layer, the stripping process is clean, and the two-dimensional material is not damaged; when the corner heterojunction is prepared, an intermediate two-dimensional material or an active interface does not contact any polymer in the whole transfer process by adjusting the shape and size of a transfer medium based on a Van der Waals force pickup transfer method, so that the pollution of a heterogeneous interface is greatly reduced; the efficient and fast preparation of the Van der Waals heterostructure without polymer residues and bubbles on the interface is realized.

The invention discloses a sample preparation and characterization method of a rotation angle crystal interface, which is suitable for a sample with dislocation at the interface of two crystals, and comprises the steps of sample preparation and measurement of the relative rotation angle theta of the two crystals. A certain angle is formed between the cutting direction and the interface for sample preparation, a slice is taken out, and the obtained slice has three thin areas including a top material A crystal, a top material A / bottom material B crystal mixing area and a bottom material B crystal; measurement of the rotation angle theta: the electron beam direction is parallel to the rotation axis of the top sample during testing, and the rotation angle theta is directly measured by analyzing crystallographic information of the three thin areas. According to the method, the rotation angle of the top crystal relative to the bottom crystal can be accurately measured through TEM analysis of the three thin regions, and the error-tolerant rate of TEM sample preparation and analysis experiments is improved. In addition, the sample preparation technology can be used for monitoring the change of the physical properties of the sample in mechanics, thermotics, optics, electricity and the like along with the reduction of the size of the sample from the micron level to the nano level.

The invention relates to a multi-source error cooperative compensation method and system based on cold-rolled sheet online detection, and belongs to the technical field of error monitoring. The method comprises the following steps: acquiring multi-dimensional data of a cold-rolled sheet in real time, and processing the multi-dimensional data of the cold-rolled sheet through a deep space-time error coupling network to generate a cold-rolling error propagation chain type relation graph; establishing a cold rolling error dynamic weight distribution mechanism according to the cold rolling error propagation chain type relation graph; calculating through the cold rolling error dynamic weight distribution mechanism to obtain a rolling multi-dimensional cooperative compensation coefficient; and outputting a multi-source cold rolling error cooperative compensation amount according to the rolling multi-dimensional cooperative compensation coefficient, thereby responding to the change of working conditions in real time, automatically adjusting the rolling multi-dimensional cooperative compensation priority, and realizing multi-source error cooperative compensation.

The invention discloses an automatic laser cutting device for sheet metal parts, and belongs to the technical field of sheet metal part cutting, the automatic laser cutting device comprises a workbench and a laser cutter arranged in the middle of the workbench, and further comprises a placing frame, a positioning roller, a fixed-distance pushing mechanism, a bearing frame, an advancing transfer mechanism, an unloading frame and an unloading mechanism; through mutual cooperation of the fixed-distance conveying mechanism, the advancing transferring mechanism and the discharging mechanism, the sheet metal part can be primarily subjected to pressing positioning, laser cutting, horizontal conveying, inclined transferring and inclined discharging treatment on the workbench; and then through the multiple cooperation effects of the fixed-distance conveying mechanism, the advancing transferring mechanism and the discharging mechanism, fixed-distance conveying and feeding, pressing, positioning and cutting, movable inclined transferring and delayed rotating discharging treatment of the sheet metal parts can be achieved, the action cohesion of laser cutting treatment is obviously improved, and the equipment operation collaboration is high.

An MIM preparation method for an ultrahigh heat-conducting composite material based on diamonds and red copper. The method comprises the preparation of a mixture, internal mixing granulation, injection molding, and degreasing sintering. By means of the MIM process, not only can uniform mixing and high-density molding of diamonds and a red copper powder be achieved, thereby effectively overcoming the technical problems of non-uniform dispersity, low density, etc. during the preparation of a high-heat-conductivity composite material by means of a traditional process, but the shape and size of a product can also be accurately controlled, particularly during the production of a sheet material having a thickness of less than 1 mm; moreover, the heat conductivity (the heat conductivity thereof being up to 500-800 W / (m·K)) thereof is significantly improved and is significantly higher than that of a traditional metal material. In addition, by optimizing MIM process parameters and selecting raw materials having higher cost effectiveness, the present invention effectively reduces the production cost, such that large-scale use of the high heat-conducting composite material based on diamonds and red copper becomes possible, thereby satisfying the high-standard requirements of high-performance electronic equipment for heat dissipation materials.

The invention discloses a hydrophobic micro-nano flexible thin film structure and a characterization method, relates to the technical field of thin film structure characterization, and aims to solve the problems of poor supporting performance of a flexible thin film and inaccurate standard data acquisition. Different acceleration voltages and currents are set for the coarse thinning stage and the fine thinning stage, fine removal of materials can be achieved, the accuracy of the thinning thickness is guaranteed, the thickness, the surface fluctuation amplitude and the microstructure feature size of a thin film in a measured image are measured with the help of a scale tool, and the measurement accuracy is improved. The morphological characteristics of the hydrophobic micro-nano flexible film can be converted into accurate data, rigid support is provided for the film by utilizing high hardness, high chemical stability and good thermal conductivity of tungsten, the upper side and the lower side of a target area are milled, hole digging is conducted on surrounding materials to form a preliminary sheet contour, then U-shaped milling and back-splashing material cleaning are conducted, and the thin film is obtained. The sample form is effectively controlled, and damage of processing stress to the sample structure is reduced.

The utility model discloses a disposable drainage bag which comprises a first bag body, and the first bag body comprises a liquid storage bag with a bag connecting end and a drainage bag connector fixedly connected with the bag connecting end; the bag connecting end is provided with oppositely connected bag opening film layers; the drainage bag connector is provided with a body tube and a wing structure integrally arranged on the outer side wall of the body tube. One end of the body pipe and the wing structure are welded between the bag opening film layers, and the wing structure is flatly laid between the two bag opening film layers; the wing structure comprises connecting sheets symmetrically distributed on the two sides of the body pipe. The bag connecting end is provided with more than two welding seam strips for oppositely welding the bag opening film layers; the connecting sheet at least continuously extends from one weld strip to another weld strip.

The invention discloses a silicon carbide / graphene composite material and a preparation method thereof, the composite material is of a three-dimensional network structure generated through in-situ reaction of multilayer graphene and silicon powder, silicon carbide nanowires in the structure are distributed on graphene sheets, the length of the silicon carbide nanowires is 1-5 microns, the diameter of the silicon carbide nanowires is 50-100 nm, and the silicon carbide nanowires are in a beta-SiC crystal form. The material is prepared through a carbon thermal reduction method, specifically, silicon carbide nanowires grow on the surface of graphene in situ, so that electromagnetic parameters and impedance matching characteristics of the material are optimized. The prepared composite material has the characteristics of light weight, high specific surface area, good dielectric loss and the like, and shows good broadband wave-absorbing performance in the frequency band of 2-18 GHz, the minimum reflection loss can reach-23.535 dB, and the effective absorption bandwidth reaches 1.498 GHz. The method is simple in process, low in energy consumption and suitable for large-scale production, and has wide application prospects in the fields of stealth technology, electromagnetic shielding and the like.

The invention relates to the technical field of heat-conducting materials, in particular to a heat-conducting silica gel sheet and a preparation process thereof, and the heat-conducting silica gel sheet is prepared from the following components in parts by weight: 100 parts of organic silicon rubber; 300-500 parts of a heat conducting filler; 3-8 parts of a curing agent; 1-3 parts of a catalyst; according to the invention, a composite system of silicon carbide particles with a specific crystal structure, surface-modified graphene sheets and nano-diamond particles is used as a heat-conducting filler, and the filler is subjected to accurate proportioning and surface treatment, so that not only is the heat-conducting efficiency greatly improved, but also the internal binding force and heat stability of the material are effectively enhanced; compared with a traditional heat-conducting silica gel sheet, the heat-conducting silica gel sheet can more effectively transfer heat and reduce thermal resistance under the same condition, so that the heat dissipation performance and operation reliability of electronic equipment are improved, and in addition, the heat-conducting silica gel sheet has good mechanical performance and machinability and is easy to adapt to various complex application scenes.

The present application discloses a shielding plate, a thin sheet body, a female terminal connector and a connector assembly, relating to the technical field of connectors. The shielding plate provided by the present application has: an inner shielding surface and an outer shielding surface which are oppositely arranged; a plurality of isolation channels, where the plurality of isolation channels are located on the shielding plate or on one side of the inner shielding surface. Among them, a fixing part is arranged on the isolation channel, and the fixing part is one of a tenon and a mortise, used to enable the isolation channel to be tenon-mortise connected with a grounding end in the connector. The shielding plate of the present application is used to realize the grounding function of the grounding end.

The device for handling adjacent sheet elements comprises a clamp (2) for gripping a sheet element (10) and a capture head (1) which is provided with clamping means (4), which separates, grips and lifts an edge of a sheet element (10). The capture head / s (1) is / are rotatable about a longitudinal axis (3).It allows the handling of sheet elements consisting of one or more layers of sheet material, allowing the clamp to slide along the surface supporting the elements to access the underside of the sheet element, thus capturing the elements on the same surface that has been used to cut them.

A keyboard membrane, which is a thin sheet molded object thermoformed by a thermoplastic wear-resistant molding membrane, comprising a plurality of concave-convex parts, the concave-convex part comprises a plurality of upwardly protruding pressing parts, each of the pressing parts has a top wall and a peripheral wall extending downward from a periphery of the top wall; the keyboard membrane is disposed on a key module with keys; each of the pressing parts is connected with one of the keys of the key module; a periphery of the keyboard membrane has a peripheral edge extending outward from the pressing part, and the peripheral edge wraps the key module to form a waterproof and dustproof keyboard.

The invention belongs to the technical field of high polymer material processing, and particularly relates to a melt extrusion molding method of an ultra-high molecular weight polyethylene wide sheet. Aiming at the technical bottlenecks of poor melt flowability, extrusion fracture and the like caused by molecular chain entanglement of UHMWPE, continuous and stable extrusion of UHMWPE wide sheets is realized by compounding a specific flow modifier and combining a stepped precise temperature control strategy and a forced symmetric cooling process. According to the method, the melt fracture phenomenon is eliminated, the intrinsic performance such as high wear resistance and low temperature resistance of UHMWPE is completely reserved, the efficiency and size limitation of a traditional mold pressing process is broken through, and a large-scale production solution of high-performance sheets is provided for the high-end fields such as food machinery and medical implants.

The invention belongs to the technical field of ceramic material preparation, and particularly discloses low-warpage laminated sheet ceramic and an anti-warpage preparation method of the laminated sheet ceramic. The warping degree of the low-warping laminated sheet ceramic at least accounts for 100% when the warping degree is smaller than side length * 0.1%. According to the anti-warping preparation method of the laminated sheet ceramic, residual stress distribution in a ceramic green body obtained after tape casting is adjusted to the maximum extent in a rotating and oppositely-stacking lamination mode; and meanwhile, the temperature isostatic pressing and sintering processes are synergistically treated by adopting multiple sections of programs, so that the problems of sintering warping, low production yield and the like of the laminated sheet ceramic are efficiently solved at low cost. According to the anti-warping preparation method, the solid content of the tape-casting slurry does not need to be increased, a scheme for improving the warping rate by increasing the solid content in the prior art is avoided, and the defects that dispersion is easy and uneven, the tape-casting effect is affected and the like due to the high solid content can also be avoided due to the low solid content.

The invention provides a micro-fluidic chip for biochemical color development detection. The invention provides a micro-fluidic chip for biochemical color development detection and a manufacturing method of the micro-fluidic chip, aiming at the problems of relatively weak mixing efficiency, single application scene and relatively tedious manufacturing of a common micro-fluidic chip. The chip is provided with a flow channel, and the flow channel comprises a liquid inlet part and a liquid mixing part; the liquid inlet part comprises two liquid inlet sections, and liquid to be detected and a reagent are respectively introduced into the two liquid inlet sections; the liquid mixing part comprises a drainage section, a turbulent flow section and a mixed flow section, and liquid is led into the mixed flow section and the conflux channel through the drainage section to be mixed. The micro-fluidic chip can be conveniently and effectively produced by using a COC material, adopting a production method of producing a thin sheet by injection molding and adopting photoresist bonding.

The invention relates to the technical field of cased well logging, and discloses an optical fiber acoustic wave circumferential sensitization structure and method.The structure is characterized in that a hollow thin-walled cylinder is annularly sleeved with a plurality of metal spring rings, a plurality of sheets circumferentially surround the hollow thin-walled cylinder and are attached to the metal spring rings, and a gap is formed between every two adjacent sheets to form an opening; the plurality of groups of fiber gratings are annularly wound on the plurality of sheets; a cylindrical structure is selected, one or more groups of sheets, metal spring rings and a hollow thin-walled cylinder are utilized to form an optical fiber acoustic wave circumferential sensitization structure, and an optical fiber is wound on the optical fiber acoustic wave circumferential sensitization structure, so that the purpose of improving the acoustic wave measurement sensitivity is achieved, and a stable and reliable optical fiber acoustic wave circumferential sensitization method is formed. The problem that the sensitivity of the bare fiber grating for measuring the sound wave signal is too low is solved.

The utility model provides a film capacitor glue pouring shaping and pin positioning work fixture, which is characterized by comprising a base, a filler strip and a tooth-shaped positioning clamping plate, the tooth-shaped positioning clamping plate, the filler strip and the base are sequentially arranged from top to bottom, the base is provided with a plurality of cavities, the sizes of the cavities are matched with the sizes of product shells, and the tooth-shaped positioning clamping plate and the filler strip are matched with each other. The product shell is loaded with a product and then is arranged in the base cavity; the appearance size of the tooth-shaped positioning clamping plate is consistent with that of the base, the middle of the tooth-shaped positioning clamping plate is an empty slot, a plurality of convex teeth are vertically symmetrical in the empty slot and are provided with cavities matched with sheet pins to insert, and the neutral lines of the convex teeth are consistent with the neutral line of the cavity of the base; the base cavity is through up and down, so that the product is easy to demould after the glue pouring material is cured; the hollowed-out parts of the tooth-shaped positioning clamping plate are more, so that the glue filling operation is easy to complete; a cavity of a base of the product shell is matched, so that deformation of the shell in the high-temperature drying process is prevented; the tooth-shaped positioning clamping plate fixes the sheet pins, so that the pin positioning problem of the capacitor is solved, and deviation of the pins in the transfer process after glue pouring is prevented.

The invention belongs to the technical field of fault diagnosis, and particularly relates to a base rod forming device and a fault diagnosis method and system thereof. The method comprises the following steps: S1, acquiring fault diagnosis section data in an operation process of a base rod forming device; the fault diagnosis data comprises real-time operation parameters and physical state parameters of the base rod forming device; the real-time operation parameters comprise the real-time operation speed of a pressing roller used for shredding sheets, the real-time operation speed of a cloth belt used for conveying forming paper and the real-time operation speed when a cutter cuts a base rod; the physical state parameters comprise one or a combination of two or three of temperature, pressure and vibration; and S2, inputting the fault diagnosis data into a pre-trained fault diagnosis model in the form of time sequence data to obtain the fault type of the base rod forming device. The technical problem that in the prior art, misjudgment and missed judgment are prone to occurring in fault diagnosis of the base rod forming device is solved.

Provided is a three-dimensional pattern card and a method of manufacturing the same. The method includes: (a) preparing a master mold in which a pattern of a three-dimensional shape is engraved on one surface; (b) fabricating a three-dimensional pattern module by forming a three-dimensional pattern on a surface of a transparent sheet made of a synthetic resin material using the master mold; (c) fabricating a rear card body module by sequentially laminating and bonding a first core sheet, an antenna inlay sheet, a second core sheet, and a rear protective sheet; (d) applying a UV adhesive to a surface of the first core sheet of the rear card body module; and (e) laminating the three-dimensional pattern module on the UV adhesive applied surface of the rear card body module and irradiating UV to cure the adhesive so as to bond the rear card body module and the three-dimensional pattern module.

To highly accurately calculate a lamination deviation amount between two layers of a laminated sheet body.SOLUTION: The sheet body 2 has a first sheet body 3 and a second sheet body 4 which are alternately laminated. The first sheet body includes a first mark 3334 and first through-holes 30c, 30d. The second sheet body includes a second mark 4344 and second through-holes 440c, 40d. The first marker is formed such that the first direction D1 can be specified. The second mark is formed so that the second direction D2 can be specified. When the first sheet element is accurately stacked on the second sheet element, the second mark is located at a predetermined second ideal position with respect to the first mark. When the second sheet element is accurately stacked on the first sheet element, the first mark is located at a predetermined first ideal position with respect to the second mark. In the upward view, the positional relationship between the position of the first marker and the second ideal position with respect to the first direction coincides with the positional relationship between the position of the second marker and the first ideal position with respect to the second direction.SELECTED DRAWING: Figure 6

The present invention concerns a paper-based barrier multilayer packaging material structure (1) being formed as a unitary sheet and comprising from its outer surface to its inner surface, the following layers: —a polymer dispersion coating (9) having a thickness of 1 to 10 μm, —a paperboard (8) having a grammage of between 120 g / m2 and 500 g / m2, —a water-based or solvent-less adhesive (7) having a thickness of 1 to 10 μm, —a barrier metallized paper layer (MBPL) having substance weight between 30-120 g / m2, preferably 45 to 90 g / m2 and a Water Vapour Transmission Rate (WVTR) of 10 to 0.1 g / m2 / d, preferably a WVTR of 1.0 to 0.1 g / m2 / d measured at 38° C. and 90% RH, and an Oxygen Transmission Rate (OTR) comprised between 100 and 0.1 cc / m2 / d, measured at 23° C. and 50% RH, preferably an OTR comprised between 1.0 and 0.1 cc / m2 / d. —at least one layer of a polymer dispersion coating (2) having a thickness of 1 to 25 μm, preferably of 5 to 15 μm.

The invention discloses an FPC flexible circuit board automatic bending device and a bending method thereof, and relates to the technical field of FPC bending, the FPC flexible circuit board automatic bending device comprises a bending box, a curing mechanism is arranged in the middle of the upper end of the bending box, an air pipe frame is arranged on one side of the upper end of the bending box, and four FPC substrate mechanisms distributed in an annular array are arranged in the curing mechanism; and one side of the upper end of the bending box is provided with a film covering mechanism which is matched with the curing mechanism to carry out dispensing pre-pressing treatment on the FPC in the FPC substrate mechanism. The air guide sheet extracts air above the substrate plate, so that the thin sheet film can be tightly attached to the surface of the FPC circuit board, glue is helped to be quickly diffused on the surface of the FPC circuit board, flowing and diffusion of the glue are accelerated through the negative pressure effect, it is ensured that the glue can uniformly cover an area needing to be bonded, and the bonding efficiency is improved. And particularly, line connection points in complex shapes or narrow spaces are provided.

The application provides a micron-thick graphite film and a growth method thereof. A substance with high carbon content is dispersed in an organic solvent and coated on a metal foil, and after drying, a carbon film / metal foil is obtained; or the substance with high carbon content is made into a sheet and placed on a metal foil, and a carbon film / metal foil is obtained; in a protective atmosphere, a current is applied to the sample, the carbon film / metal foil is heated by using the Joule effect of the current, and the power supply is stopped, so that a micron-thick graphite film is obtained on the surface of the metal foil. The graphite film is prepared by using the dissolution-precipitation of carbon in the metal substrate in the process of high-temperature-low-temperature temperature change. Since the metal substrate has an epitaxial relationship with the graphite lattice, the graphite film with AB stacking can be directly precipitated, so that the graphitization of carbon can be realized at a lower temperature. The reaction system is radiated and heated by using the Joule heating characteristic of the current, the heating efficiency is effectively improved, the temperature is raised from room temperature to the growth temperature in a few seconds, the influence of the side reaction is reduced, and the raw material utilization rate is improved.

The invention relates to the technical field of material processing, in particular to a TC4 wide titanium alloy thin plate and a short-process production processing method thereof, and the TC4 wide titanium alloy thin plate is obtained according to the following method: first heating number rolling, intermediate semi-finished product hot coiled plate annealing and pickling, coating, finished product rolling, annealing, plate lifting, pre-cutting, creeping, surface treatment and finished product cutting to obtain the high-quality TC4 wide titanium alloy thin plate. Five heating numbers required by a traditional process are reduced to two heating numbers, a middle semi-finished product hot coil with the thickness of 3.0 mm to 5.5 mm is obtained after rolling, and then the high-quality TC4 wide titanium alloy thin plate with the width of 1500 mm to 2000 mm, the length of 3000 mm to 4000 mm and the thickness of 0.5 mm to 2.5 mm is obtained after rolling, so that the production efficiency is improved by 50%, the plate cost is reduced by 50%, the TC4 wide titanium alloy thin plate is more convenient to use in the application field, the welding requirement is lower, and the production cost is reduced. And the safety performance is higher.

The invention relates to the technical field of isotope irradiation production, in particular to a target material arrangement device suitable for researching reactor irradiation production of iride-192. The target material arrangement device mainly comprises a cladding, a plurality of clamping blocks and iridium sheets, the clamping blocks are arranged on the inner side of the cladding and arranged around the circumference of the central axis of the cladding, and the iridium sheets are arranged on the clamping blocks; and the iridium sheet is arranged on one side, in contact with the cladding, of the clamping block. Through the structure, the target material in the target material arrangement mode of the iride-192 is designed into a pure I < r > circular sheet. The small-size target material can improve the irradiation uniformity of a single target material and can be used for manufacturing a small-size flaw detection source device, and the application range of a product is widened. The target material is defined as a natural target material and a high-enrichment-degree target material according to the difference of the content of the iridium 191 in the target material, the target material arrangement can be automatically adjusted according to the actual production requirement, and the production flexibility of the iridium 192 can be improved.

The invention relates to the technical field of carton pasting machines, in particular to a carton pasting machine device capable of preventing deviation and feeding for carton processing, which comprises a frame body, a piece taking mechanism, an inner probing mechanism, an upper side plate opening mechanism and a bidirectional bonding mechanism, and the inner wall of the frame body is fixedly connected with two limiting tables which are symmetrically distributed; the outer walls of the two limiting tables are fixedly connected with glue spraying openings, and glue storage boxes are arranged below the two glue spraying openings. The inner probing mechanism drives the sheet plate to extend out in a manner of clinging to the two sides of the paper box, the first sliding rod slides to the protruding range of the supporting sliding groove, the sheet plate supports the lower side plate from the interior, the upper edge supports the upper side plate while the lower side plate is unfolded, and therefore the lower side plate is folded inwards and the upper side plate is unfolded automatically; the longitudinal height of the outer side bearing rod and the inner side bearing rod is reduced, so that the sheet plate is matched with the pressing block from bottom to top to comprehensively clamp the inside and the outside of the sheet plate, and the phenomenon that due to the fact that the interior of the paper box is hollow, bonding is not firm due to the too small unilateral flattening force is avoided.

A sheet drying apparatus includes a conveyance portion, a drying portion, a suction fan unit, an exhaust portion, and first and second ducts. The conveyance portion conveys a sheet on which an image is formed with ink containing moisture. The drying portion heats and dries the sheet. The suction fan unit is arranged downstream of the drying portion in the conveyance direction of the sheet and includes a suction fan that sucks in air present in a drying space between the conveyance portion and the drying portion. The exhaust portion discharges the air sucked in by the suction fan unit. The first duct communicates the drying space with the suction fan. The second duct communicates the suction fan with the exhaust portion. The suction fan unit collects the air present in the drying space by sucking it in the horizontal direction orthogonal to the conveyance direction via the first duct.

A pressure sensing conductive elastomeric composite material, the material comprising a polymer matrix, itself comprising an elastomeric material, and a conduction network within the polymer matrix. The conduction network comprises: a plurality of particle chains, with each particle chain comprising a plurality of metallic ferromagnetic particles, a plurality of liquid metal droplets, and a plurality of non-ferromagnetic conductive platelets, wherein the conductivity of the composite material varies as a function of the pressure applied to the material.

The invention relates to the technical field of material sealing, in particular to a high-performance insulating ceramic sealing method for a neutron tube, which comprises the following steps: sequentially carrying out organic solvent ultrasonic cleaning and argon plasma etching activation treatment on a sealing surface of a cylindrical high-purity aluminum oxide ceramic piece, and depositing a titanium transition layer through magnetron sputtering, the ceramic piece with the titanium transition layer is obtained; the sealing face of the kovar alloy cylindrical flange plate is subjected to acid pickling, an oxide layer is removed, cleaning and drying are conducted, and a metal sealing part is obtained; preparing an active brazing filler metal sheet; the components are assembled in sequence to form a pre-assembled component; the pre-assembled component is placed in a vacuum brazing furnace, axial pre-tightening force is applied to the pre-assembled component, sealing is completed, then cooling is controlled, and a sealing piece with an airtight brazing joint is formed; and carrying out annealing treatment to obtain a finished product sealing assembly. Therefore, the problems of low dielectric strength, large thermal expansion coefficient difference, difficulty in interface quality control and the like in the prior art are solved.

A method for producing an extruded plastic sheeting material (12; 12′; 12″) having a multitude of parallel hollow chambers (14) in its interior, includes the steps of extrusion of a sheet of the sheeting material (12; 12′; 12″) that is continuous in the running direction (x) of the hollow chambers (14) while applying compressed air to the hollow chambers (14) from the inside, the production of weakening lines (16) in the sheet running transversely to the running direction (x) of the hollow chambers (14) by introducing creases (50) into the sheeting material (12), the depth of which is dimensioned in such a way that the hollow chambers (14) are not interrupted by the creases (50).