75 results about "Electroforming" patented technology

The invention discloses an Archimedes spiral anode rotary scanning electroforming device, and belongs to the technical field of electroforming. The Archimedes spiral anode is made of platinum with the width of 50 micrometers and the purity of 99.999%, the Archimedes spiral anode is embedded in the center of a line anode carrying plate, and the polar coordinate equation is that during electroforming, a cathode carrying plate rotates along with a rotating shaft at the rotating speed of 0.1-20 r / s, and uniform coverage of a cathode global electric field is achieved; the device is provided with an adjustable gap of 0.5-4 mm between two electrodes, a liquid supply channel is formed in the center of a wire anode carrying disc, the carrying disc is parallel to a cathode carrying plate, and the distance between the carrying disc and the cathode carrying plate is adjustable. The spiral line anode structure can solve the problem that a traditional radial anode is uneven in electric field; through the flow-rotating speed synergistic effect, the rotating centrifugal force of the cathode can be counteracted, and the interelectrode ion concentration is kept stable; the continuous helical structure can also eliminate non-effective working time. According to the method, the edge effect and the bubble defect are effectively restrained, the deposition uniformity, the electroforming efficiency and the deposition layer performance are improved, and the method is suitable for high-precision electroforming manufacturing of the chip type disc-shaped cathode substrate.

The application discloses a kind of production methods and application of mushroom-shaped array via hole mould which avoid blockage, easy to clean, including steps: round hole array mould processing, hot-press forming, conductive treatment, end insulation, electroforming;The mushroom-shaped array via hole mould obtained by the method is applied in the preparation of mushroom-shaped bionic array by rolling;The metal mould prepared by the method has high mechanical strength, high thermal conductivity and good durability, and converts the processing problem of mushroom-shaped blind hole into mushroom-shaped via hole, forms mushroom-shaped via hole by inducing non-uniform deposition of metal ions in 3D limited space, effectively eliminates the limitation that the morphology of plating layer is completely determined by the morphology of core mould in conventional electrodeposition process, simplifies the geometry of electroforming core mould, reduces the manufacturing difficulty of electroforming core mould, and improves the controllability of plating layer morphology.

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.

The present application relates to a kind of nickel alloy screen for printing and its manufacturing method, comprising the following steps: step one: select nickel alloy plate as original model;Step two: the surface cleaning of the original model selected in step one is carried out, and surface dirt and oil stain are removed;Step three: using chemical cathode deposition method, with original model as material, add electroforming liquid, complete nickel net integrated molding work by electroforming;Step four: the electroformed nickel net after being treated in step three is demoulded, and nickel alloy net is obtained;Step five: the nickel alloy net after being demoulded in step four is hot melt compounded with PE film by hot melting machine.The present application is integrally formed by micro electroforming, processed and formed by cathode deposition phenomenon in electrochemical process, has very high replication accuracy and dimensional accuracy, can replace the use of traditional screen gauze, and because of its flexibility of arbitrary design, currently has designed multiple schemes to match the use of different scenes.

This invention relates to the field of metal material processing technology. It discloses a synergistic composite forming process for metal wire electroforming and drawing, comprising the following steps: first, surface cleaning and activation treatment of the base metal wire to remove oxide layers, oil stains, and impurities; then, feeding the pretreated wire into an electroforming device to deposit a metal plating layer, obtaining an initial electroformed composite wire; subsequently, direct online radial high-pressure drawing to achieve a dense bond between the electroformed layer and the base metal; followed by annealing of the composite wire; repeating the electroforming, drawing, and annealing steps at least once to complete multiple synergistic cycles; finally, testing the dimensional accuracy, mechanical properties, and interlayer bonding force of the composite wire, and cutting it into finished products after passing the tests. This invention employs an online tandem synergistic process of electroforming and drawing, avoiding plating oxidation and interface contamination. Radial high-pressure drawing can compact the plating layer, eliminate porosity, and improve bonding density.

The present invention belongs to the field of infrared detection sensors and proposes a cold screen for a refrigerated infrared detector. Specifically, it is a cold screen with a wavy, integrated structure. The cold screen has a wavy appearance and is directly processed using a single electroforming process. The inner surface of the cold screen is blackened, and the outer surface can be gold-plated or untreated. The cold screen does not require welding during processing, making the process simple and the cold screen itself has high mechanical strength. Furthermore, the cold screen can be designed into different structural shapes based on the cooling effect and the need to shield stray light, further improving the accuracy of refrigerated infrared detection and showing good application prospects.

This invention discloses an anode device for electroforming additive manufacturing with uniform velocity distribution in long-slit jets. It includes a cover plate, a shell, a bottom cover, a flow rate regulating plate, and inert anode plates. The cover plate and bottom cover are sealed and fixed to the upper and lower ends of the shell, respectively. The shell contains an electrolyte receiving cavity and a liquid inlet, with the inert anode plates symmetrically inserted into the side walls of the liquid inlet. The bottom cover has a long-slit outlet. The flow rate regulating plate is fixed in the receiving cavity, forming a flow rate regulating slit between the two plates. The inlet, receiving cavity, flow rate regulating slit, liquid inlet, and long-slit outlet are sequentially connected. The flow height distribution of the flow rate regulating slit is set according to the natural velocity distribution curve of the long-slit outlet: a parabolic distribution in laminar flow and a 1 / 7 power-law distribution in turbulent flow. This device, by designing the flow rate regulating slit, solves the problem of uneven velocity distribution in long-slit jets, significantly improves the velocity distribution at the jet outlet cross-section, achieves spatial coupling between the flow field and the electric field, and improves the uniformity of the electroforming deposition layer thickness.

The utility model discloses a novel dial plate capable of realizing micron-sized grains, which comprises a base plate and a texture sheet attached to the upper surface of the base plate, a glue layer is arranged between the base plate and the texture sheet, the texture sheet comprises a silver mirror base layer and an electroformed texture layer, and the electroformed texture layer is arranged on the upper surface of the silver mirror base layer. The utility model provides the novel dial plate capable of realizing micron-sized grains, and the surface of the dial plate can show micron-sized fine grains which cannot be generated through a stamping process and a chemical etching process, so that the dial plate is more fine and exquisite.

The invention provides an application of a two-dimensional rare earth double perovskite material in preparation of a memristor, and relates to the technical field of memristors, the chemical general formula of the two-dimensional rare earth double perovskite material is (R3HQ) 4CeRb (NO3) 8, wherein the (R3HQ) 4CeRb (NO3) 8 is a monoclinic system, and the polar point group of the (R3HQ) 4CeRb (NO3) 8 is P21; and R3HQ is an (R)-3 hydroxyl quinuclidine ring organic cation. Two-dimensional rare earth double perovskite (R3HQ) 4RbCe (NO3) 8 is used as an active layer, and a memristor device is directly constructed. The memristor shows bipolar switching characteristics without electroforming, has long-term stability and good flexibility, and can bear hundreds of bending cycles.

The invention discloses a laser coaxial coupling jet electroforming additive manufacturing nozzle and a machining system, and belongs to the technical field of metal additive manufacturing. The nozzle comprises an optical cavity sleeve, a middle cavity and a liquid outlet which are connected in series through axial threads. The optical cavity sleeve is provided with a laser incidence cavity; the middle cavity is provided with an accommodating cavity, an electrolyte inlet and an anode interface; the optical window is tightly pressed between the optical cavity sleeve and the middle cavity through a sealing ring; the hollow platinum tube is coaxially arranged in the containing cavity, and the upper end of the hollow platinum tube and the optical window form a thin water layer. Electrolyte enters from the liquid inlet, flows in the hollow platinum tube and then is ejected out from the liquid outlet at a high speed; a laser beam enters the jet flow through the incidence cavity and the optical window, forms water-guided laser through total reflection and is conducted to a deposition point. Accurate coaxial coupling of laser, a flow field and an electric field is achieved, and the efficiency, quality and precision of electroforming deposition are synchronously improved through the synergistic effect of the laser heat effect and jet flow high mass transfer.

To provide a method for manufacturing a part made from an electrically non-conductive material.SOLUTION: Provided is a method for manufacturing a part including at least one relief decoration (2a) of a noble metal or its alloy, the method including the steps of: depositing a first adhesion layer (4a) and a second adhesion layer (4b) on the surface of an ebauche (3); depositing by electroforming a layer of the noble metal or of its alloy (5) on the second adhesion layer (4b); laser cutting the layer of noble metal or of its alloy (5) to outline the relief decoration (2a); depositing a protective layer (7) around the relief decoration (2a); removing the layer of noble metal or of its alloy (5) from portions (2c) not covered by the protective layer (7); removing the protective layer (7); and removing the first adhesion layer (4a) and optionally the second adhesion layer (4b) on the portions (2c).SELECTED DRAWING: Figure 7

The application discloses an electroforming device and an electroforming processing method, and relates to the technical field of electroforming. The electroforming device comprises a cathode core mold, a wall thickness limiting mold and a screw rod. The wall thickness limiting mold is internally provided with a containing cavity, and the cathode core mold is contained in the containing cavity. The wall thickness limiting mold is provided with a first opening penetrating through the side wall of the wall thickness limiting mold. The screw rod is arranged at one end of the wall thickness limiting mold, and is used for driving the cathode core mold to synchronously rotate with the wall thickness limiting mold. The electroforming device and the electroforming processing method can improve the electroforming processing efficiency of parts with different wall thicknesses.

The patent of the present invention belongs to the field of micro-electroforming, and specifically relates to a core mold and method for electroforming for manufacturing metal trumpet-shaped conical-hole micro-nozzles. A core mold for electroforming for manufacturing metal trumpet-shaped conical-hole micro-nozzles includes a substrate, a conductive layer and an electrically insulating layer tightly adhered to the upper surface of the substrate in sequence, and regularly arranged blind holes penetrating the conductive layer and the electrically insulating layer; the substrate is an electrically insulating material; the bottom of the blind hole is the upper surface of the substrate. A method for manufacturing metal trumpet-shaped conical-hole micro-nozzles includes first electroforming the core mold as a cathode; then, using an ultra-precision machining device to thin and flatten the core mold; dissolving and removing the electrically insulating layer and the conductive layer to obtain a metal trumpet-shaped conical-hole micro-nozzle. The present invention solves the problem of mass production of straight outer-walled metal trumpet-shaped conical-hole micro-nozzles with small dimensions and smooth inner and outer wall surfaces. The core mold preparation process of the present invention has good compatibility and is easy to implement.

The present invention relates to the technical field of silicon-based OLEDs. Disclosed are a mask manufacturing method and a mask. The mask manufacturing method comprises: providing a silicon-based substrate; forming a metal seed layer on the surface of the silicon-based substrate; forming a first photoresist layer on the surface of the metal seed layer; forming, on the surface of the first photoresist layer, a plurality of first windows exposing part of the metal seed layer; forming, on the surface of the metal seed layer facing the first windows, a mask layer filling the first windows by an electroforming process; and removing the first photoresist layer, the silicon-based substrate, and the metal seed layer to obtain a mask. In the present invention, the mask is manufactured by combining a photolithography process and the electroforming process, wherein the opening width of the mask depends on the precisions of exposure, development and photoresist removal during the photolithography process. Compared with the existing calendering and etching processes, the manufacturing method provided by the present application can reduce the minimum opening dimension of the mask, such that the mask can be applied to manufacturing of silicon-based OLED display devices with higher PPI.

The application discloses a spiral wire anode rotating disc device for electroforming additive manufacturing, and belongs to the technical field of electroforming additive manufacturing. The device comprises a rotating disc carrier plate, a plurality of wire anodes, an auxiliary cathode and a power supply. The lower surface of the rotating disc carrier plate is provided with Archimedes type arranged spiral grooves, and is staggered with the wire anodes to form a driving type micro channel system; the auxiliary cathode is arranged at the outer side edge of the rotating disc and is connected with the power supply through a shunt. The application improves the current carrying capacity and effective working area through the parallel arrangement of the multiple anodes, enhances the inter-electrode mass transfer efficiency in combination with the micro channel system, and suppresses the edge effect by using the auxiliary cathode. The synergistic work of the structure optimizes the electric field distribution and the mass transfer process, thereby realizing the synchronous improvement of the deposition rate, thickness uniformity and effective utilization rate of the substrate, and can be widely applied to the additive manufacturing scene of the metal microstructure with high efficiency and high consistency.

The invention relates to a manufacturing method and device of a casting pattern capable of being applied to a precise circuit. The device comprises a casting mold core and a heating device, the casting mold core is composed of a mold plate and a pressure body, a pattern cavity of a needed pattern is formed in the mold plate, a casting material is laid on the pattern cavity, and the pressure of the pressure body is transmitted to the casting material. The heating device is used for heating the template, so that the casting material on the template is partially or completely melted and fills the pattern cavity under the action of pressure, and the casting pattern on the template is obtained after cooling and solidification. The novel plane casting process provided by the invention is a near-net forming process capable of replacing etching, electroforming, powder metallurgy and other processes, and can be used for manufacturing casting patterns of metal, glass, ceramic and other materials, such as parts, templates and the like. The precise circuit board is manufactured by curing the insulating material on the circuit pattern obtained through casting, the manufacturing precision of the circuit board can be improved, pollution generated in the production process can be avoided, and the manufacturing cost can be greatly reduced.

The invention belongs to the field of electroforming, and particularly relates to an anode hanger for electroforming square capillary tubes, which comprises a square metal core mold, four sheet-shaped anodes, four shielding plates, an anode fixing seat, an anode guide seat, two electrically-conductive titanium sheets and a hanging rod. The anode fixing seat is provided with a square through hole. The anode guide seat is provided with a square through hole and a square groove. Flexible bristles are arranged on the wall surface of the square through hole II. The two electrically-conductive titanium sheets are provided with a square through hole III, which are in close contact with and electrically connected to the front and back end surfaces of the sheet-shaped anode. The center lines of the cross sections of the square through hole I, the square through hole and the square through hole III are collinear, and the three are non-contact and reciprocally linearly movable on the square metal core mold. The invention can effectively solve the problems of rounding of the outer surface and poor thickness uniformity of the electroformed square capillary tube, and ensure high-precision forming of the square capillary tube.

This invention relates to the field of photomask fabrication technology, and discloses a beveled photomask and its fabrication method, comprising the following steps: sequentially fabricating a conductive film, a solid photoresist film, and a first photoresist film on a transparent substrate; photolithographically forming a first beveled photoresist film pattern on the first photoresist film; electroforming a first beveled electroformed film; fabricating a second photoresist film on the first beveled photoresist film pattern and the first beveled electroformed film; photolithographically forming a second beveled photoresist film pattern on the second photoresist film; electroforming a second beveled electroformed film on the first beveled electroformed film; binding the formed beveled electroformed film assembly to a photomask frame; and finally demolding to form a beveled photomask. This invention allows for sufficiently thin photomasks through electroforming, and simultaneously sets bevels for the holes in the photomask through two electroforming processes. This method can produce photomasks with thinner thickness and higher bevel accuracy for the holes. Such photomasks facilitate uniform filling of organic films within the substrate pixels, thereby improving pixel fill rate and material utilization.

A method of removing a plurality of portions of a black layer of an electrical conduit for a photovoltaic cell is disclosed. The method includes providing a mandrel having the electrical conduit electroformed in the mandrel. The electrical conduit is formed in a preformed pattern on an outer surface of the mandrel. The electrical conduit has the black layer with a black layer thickness on a side opposite of the outer surface of the mandrel. A beam of a laser is controlled toward the black layer of the electrical conduit. The beam is characterized by laser parameters. The beam of the laser removes the plurality of portions of the black layer on the electrical conduit. Each removed portion of the plurality of portions of the black layer has a thickness equal to the black layer thickness, and a portion area of 5 mm2 to 20 mm2.

The invention provides a laser-enhanced area electroforming additive manufacturing device and method. The device comprises an electroforming power supply, a master control system, a circulating system, a laser system, an electroforming tank, an area array micro-jet printing head erected in the electroforming tank, a cathode substrate arranged below the area array micro-jet printing head and a cathode driving system, the cathode substrate is not in contact with the inner wall and the bottom of the electroforming tank; the laser system comprises a beam shaping module; a linear strip-shaped laser beam emitted by the beam shaping module passes through the electrolyte in the liquid storage shell and the micro nozzle through the light transmitting window and then is vertically irradiated on the cathode substrate; and the line-strip-shaped laser beam covers all the micro nozzles. The method is a laser-enhanced area electroforming additive manufacturing method using the device. According to the device and the method, the deposition rate and the production efficiency can be greatly improved, the printing resolution ratio and the forming precision are improved, the structural part with higher performance can be obtained, and the performance of the structural part is easier to regulate and control.

The invention discloses a laser coupling area electroforming additive manufacturing nozzle device and an electroforming machining system. The device comprises a glass cover plate, light-transmitting glass, a nozzle main body and a micro-spraying anode strip. A rectangular narrow slit is formed in the center of the glass cover plate to transmit laser, and the light-transmitting glass is pressed and fixed at the upper end of the nozzle main body; the micro-jet anode strip is attached to and covers an outlet in the lower end of the nozzle main body, and a micro-pore array on the micro-jet anode strip is used for limiting a plurality of independent deposition areas; and a flow channel structure with gradient shrinkage, a liquid inlet and a liquid outlet are arranged in the nozzle main body, so that stable flowing of the electrolyte is guaranteed, and byproducts are discharged. Through in-situ synergy of laser and an electric field, deposition grains are refined by utilizing a laser heat effect, parallel processing is realized by combining a porous anode strip, and optical, electric and current fields are integrated in a single device, so that the problems of low precision, poor uniformity and insufficient efficiency of traditional electroforming deposition are effectively solved; and a reliable scheme is provided for large-scale additive manufacturing of the micro-nano metal structure.

According to the manufacturing method of the metal printing plate capable of prolonging the service life, the metal printing plate is thinned, the metal printing plate is not prone to abrasion, and therefore the service life of the metal printing plate is prolonged. A bottom metal layer is obtained on a stainless steel substrate through an electroforming process, then the upper surface of the bottom metal layer is coated with photoresist, then the photoresist layer in an area where a slurry storage tank needs to be arranged is removed through exposure and development of a photoetching machine, and then an upper metal layer is grown on a non-slurry storage tank area of the bottom metal layer through the electroforming process again. The bottom metal layer and the upper metal layer are combined to form a metal plate body, then the metal plate body is separated from the stainless steel base plate, after the metal plate body is stretched, each slurry storage tank is processed through a laser cutting technology to obtain a slurry outlet tank, and finally, a heightening layer made of epoxy resin is arranged on the printing face or / and the scraper face of the metal plate body.

The invention discloses a spiral anode rotating disc device for electroforming additive manufacturing, and belongs to the technical field of electroforming additive manufacturing. The device comprises a rotating disk carrier plate, a plurality of line anodes, an auxiliary cathode and a power supply. Spiral grooves which are arranged in an Archimedes type are formed in the lower surface of the rotating disc carrier plate and are staggered with the line anodes, so that an active micro-channel system is formed; the auxiliary cathode is arranged on the outer edge of the rotating disc and is connected with the power supply through the shunt. Through parallel arrangement of multiple anodes, the current bearing capacity and the effective working area are improved, the interpolar mass transfer efficiency is enhanced in combination with the micro-channel system, and the edge effect is inhibited by using the auxiliary cathode. The cooperative work of the structure optimizes the electric field distribution and mass transfer process, so that the deposition rate, the thickness uniformity and the effective utilization rate of the substrate are synchronously improved, and the method can be widely applied to additive manufacturing scenes needing high-efficiency and high-consistency metal microstructures.

The invention discloses a preparation method of a composite tombstone, which comprises the following steps: firstly, performing twin-screw extrusion on unsaturated polyester resin, silane coupling agent modified quartz powder and auxiliaries at 110-120 DEG C, and performing vacuum devolatilization to prepare a resin matrix; dispersing the glass fiber and the PET fiber in the matrix through a three-section type dipping tank to obtain a modified bulk material; then pouring the agglomerate into an electroforming nickel-based stone texture imitating mold, controlling the temperature of a feeding area at 125-135 DEG C, controlling the temperature of a forming area at 140-145 DEG C and controlling the temperature of a cooling area at 75-80 DEG C, and carrying out stepped pressure forming; and finally, laser engraving characters, spraying fluorocarbon transparent paint containing nano silicon oxide, and carrying out a salt spray test. The gravestone is hollow and filled with a degradable foaming material, and a stainless steel threaded sleeve is pre-buried at the bottom; according to the composite system, the density of the tombstone is reduced to 1.5-1.8 g / cm < 3 >, the bending strength exceeds 100 MPa, the hollow structure is filled with the degradable material, the impact resistance is improved, the modified filler is resistant to ultraviolet, and uniform dispersion is ensured through the process.

The invention discloses a ceramic-based porous array jet electroforming micro-jet anode and a preparation method thereof, and belongs to the technical field of array electroforming. The micro-jet anode mainly comprises an aluminum oxide ceramic substrate, an array micropore structure, a partition mask layer, a metal conductive film coating layer and a wire (control interface), the aluminum oxide ceramic substrate is subjected to laser processing to form an array through hole structure, magnetron sputtering film coating is carried out on the inner wall of a hole after the hole wall is corroded and finely trimmed through hydrofluoric acid, and a metal layer is attached to the surface of the hole wall; the partition mask is used for limiting a film coating area and is adhered to the wire through the epoxy conductive adhesive to form an independent controllable circuit interface. The core innovation of the invention lies in that a traditional tip nozzle structure is replaced by a ceramic-based porous array, and a micro-jet anode is constructed through hole wall metallization, so that high-integration, small-size and low-cost manufacturing of array jet electroforming is realized; the ceramic substrate has excellent mechanical, thermal and chemical stability, and the pressure resistance and insulativity of an electroforming system are remarkably improved. According to the design, the problems of large anode size, low microneedle density, high manufacturing cost and poor array consistency in traditional jet electroforming are effectively solved, and a large-scale technical scheme is provided for high-resolution and high-efficiency micro-nano metal structure electroforming machining.

The invention relates to a shadow mask manufacturing method. The shadow mask manufacturing method comprises the following steps: forming a conductive layer on a base substrate; laminating a photoresist on the conductive layer, and patterning the photoresist into a form corresponding to the mask pattern; performing electroforming plating on areas except for the patterned photoresist to form a mask sheet; patterning the base substrate and the conductive layer to expose the mask pattern so as to form a mask frame; and performing light treatment or heat treatment before and after the mask frame is formed or during the mask frame forming process so as to enhance the adhesive force between the mask sheet and the conductive layer.

A system and method of inspecting a thickness of metal on an electroformed component. The system capable of scanning the electroformed component with a sensor. The system including a computer for generating a scan data set indicative of the thickness of the metal on the electroformed component. A controller for instructing an anode to deposit additional metal on the electroformed component where the thickness is less than a target thickness.

Provided is a master for electroforming, the master being for manufacturing a metal formed product having a hole. The master for electroforming has, on the surface, an insulating mask for forming the hole of the metal formed product. The mask includes a ring-shaped mask that, in a plan view, has a contour corresponding to the outline of the hole and has an inner hole part. Provided also are a method for producing a metal formed product and the metal formed product.

A method includes forming a component by electrodepositing a metal layer on an exposed surface of a sacrificial mandrel, followed by forming a surface layer on the metal layer and heat treating the component. The heat treatment includes a first heat treatment and a second heat treatment for forming the high strength member.