115 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 invention discloses a mask manufacturing method and a mask, and relates to the technical field of silicon-based OLEDs (Organic Light Emitting Diodes), the mask manufacturing method comprises the following steps: 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, and forming a second photoresist layer on the surface of the first photoresist layer; and forming a plurality of first windows for exposing part of the metal seed layer on the surface of the first photoresist layer, forming mask layers for filling the first windows on the surface, facing the first windows, of the metal seed layer by an electroforming process, and removing the first photoresist layer, the silicon-based substrate and the metal seed layer to obtain the mask. According to the manufacturing method, the mask plate is manufactured in a mode of combining the photoetching process and the electroforming process, the opening width of the mask plate depends on the exposure, development and photoresist removal precision in the photoetching process, and compared with existing calendering and etching processes, the manufacturing method can reduce the minimum opening size of the mask plate and improve the manufacturing efficiency of the mask plate. Therefore, the mask plate can be applied to manufacturing of a silicon-based OLED display device with higher PPI.

The invention relates to the technical field of microporous structure processing, and discloses an excimer laser and LIGA process combined microporous structure processing method and system, and the method comprises the following steps: S1, substrate pretreatment, S2, excimer laser photoetching, S3, development and electroforming mold preparation, and S4, injection molding and demolding. The system comprises the following modules: a module M1, an excimer laser module, a module M2, an LIGA process module, a module M3, an online detection module, a module M4 and a multi-material compatible module. According to the invention, the plasma density is inhibited to be below 1016cm <-3 > through a helium environment, the surface temperature gradient of the polymer substrate is synchronously reduced in combination with low-temperature cooling airflow, the width of a heat affected zone is compressed to 1.8 microns from 5 microns in a traditional process, and more than 80% of laser thermal stress is absorbed through a silicon dioxide buffer layer through a synergistic thermal response mechanism of a multi-layer photoresist structure. And interface stripping and microcracks are avoided.

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.

The present invention discloses a method, comprising the following steps: placing a mandrel having an optionally textured surface in an electrolytic cell to form a cushion layer, wherein the cushion layer comprises a negative image of the optionally textured surface formed by metal electrolytic deposition; fixing the cushion layer with a working side down on a reference plane with a fixture; optically scanning the cushion layer to reverse engineer the geometry of a non-working surface, wherein reverse engineering the geometry of the non-working surface includes developing a profile of the non-working surface and a thickness of the cushion layer; and adding material to the non-working surface of the cushion layer by additive manufacturing to form a mold insert.

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 metal printing screen capable of eliminating static electricity, which comprises a conductive screen frame, polyester screen cloth is stretched in the screen frame, a metal mesh connected with the polyester screen cloth is arranged in the center of the polyester screen cloth, and a conductive wire is connected between the metal mesh and the screen frame. The conductive wires can be woven in the polyester screen cloth; the conductive wire is a steel wire or a copper wire; the metal mesh is an electroforming nickel mesh, a nickel alloy electroforming mesh, an electroforming nickel and nickel alloy metal plate, a laser cutting steel plate or a chemical etching metal printing screen plate. According to the metal printing screen, one or more conductive wires are connected to the screen frame in the screen pattern metal area, static electricity is conducted to the printing machine table, the printing machine table is provided with a grounding wire, the problem that the printing effect becomes poor gradually due to the fact that foreign matter is adsorbed by the static electricity can be solved, the overall function is complete, and practicability is high.

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.

The present invention relates to the field of electroforming technology, and specifically discloses a rotary electroforming device, comprising: a rotary device, an electroforming device arranged under the rotary device, a liquid supply device installed on one side of the electroforming device, an electroforming pool installed on the liquid supply device, and a reflux device installed on the electroforming pool; the liquid supply device and the reflux device of the present invention cooperate with each other, so that the electroforming liquid in the electroforming device can circulate and flow, and promote the uniform distribution of metal ions in the electroforming liquid; at the same time, a substrate is installed on the rotary device, and the substrate is electroformed during rotation through the rotation function of the rotary device, and the rotation of the substrate drives the stirring of the electroforming liquid, which can effectively prevent the accumulation of bubbles in the metal ion deposition process to cause pinholes, and the rotation of the substrate also prevents the edge effect of the current from causing uneven thickness of the casting layer; the uniformity of the casting layer can be effectively improved under the dual effects of liquid flow and substrate rotation.

The present invention belongs to the field of micro electroforming, and specifically relates to a debonding jig for thin-sheet micro electroforming parts, comprising a substrate, a film attached to the surface of the substrate, and a thin-sheet micro electroforming part placed in the film, and also comprising a cover plate, an upper strong magnetic ring, and a lower strong magnetic ring; the periphery of the lower surface of the cover plate is provided with positioning columns arranged at equal intervals; the side of the cover plate is provided with a clamping handle with a through hole; the top of the positioning column is provided with a positioning platform with a retaining edge; the substrate is placed on the positioning platform and the micro electroforming part on the substrate faces the cover plate; the upper strong magnetic ring and the lower strong magnetic ring are placed on the cover plate and the substrate respectively. The present invention can effectively ensure that the thin-sheet micro electroforming part can be laid flat on the cover plate without turning over or stacking after the film is removed, which greatly improves the light transmission observation efficiency of the film removal and the morphology observation efficiency of the thin-sheet micro electroforming part. The structure is simple, the installation and disassembly are convenient, the components are few, and it is easy to implement.

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.

An electroforming system and method, the method comprising: disposing a cathode defining a mandrel in an electrolytic solution; and applying a voltage to the cathode in the electrolytic solution to form a coating on the cathode. The coating may be formed as an amorphous coating that does not have a distinguishable grain boundary or does not have a distinguishable long range order.

The present application relates to a casting pattern manufacturing method and apparatus applicable to a precision circuit. The manufacturing apparatus comprises a casting core and a heating apparatus, wherein the casting core consists of a template and a pressure body, a pattern cavity of a required pattern is formed on the template, a casting material is laid on the pattern cavity, and the pressure of the pressure body is transmitted to the casting material; and the heating apparatus heats the template, such that the casting material on the template partially or completely melts and fills the pattern cavity under the action of the pressure, and so as to obtain a casting pattern on the template after cooling and solidification. The new near-net forming casting process provided in the present application can replace processes such as etching, electroforming and powder metallurgy, so as to manufacture casting patterns such as parts and templates of materials such as metals, glass and ceramic, and the precision can reach a micron level. In the present application, a precision circuit board is prepared by curing an insulating material on a circuit pattern obtained by means of casting, thereby not only improving the manufacturing precision of the circuit board, but also avoiding pollution generated during production, and also greatly reducing manufacturing costs.

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 discloses a steel mesh processing process based on micro-welding technology, wherein the steel mesh includes a plurality of first-class openings and second-class openings, and comprises the following steps: making an electroformed orifice plate, making a steel mesh blank, micro-welding, post-processing, mesh bonding and other process steps. The present invention adopts a composite process to convert the local printing demoulding area on the steel mesh into an electroformed orifice plate by electroforming. Laser micro-welding technology is used to embed into the opening part of the corresponding steel mesh blank, thereby realizing the use of electroforming for local openings and laser technology for most openings, thereby combining the advantages of electroforming with laser processing, which not only ensures the printing quality requirements of the small holes, but also reduces the overall processing cost and improves the processing efficiency.

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 invention relates to the technical field of thrust chamber dissimilar metal welding, in particular to an electroforming nickel dissimilar metal vacuum laser welding process method which is used for thrust chamber axial butt joint welding seams, the welding seams are of a rotary body structure and a whole circle of circumferential welding seams, a non-full penetration structure mode is adopted, and base materials on the two sides of the welding seams are a high-temperature alloy section and an electroforming nickel section respectively. And vacuum laser welding is adopted, programming is conducted twice in the welding process, programming is conducted by deflecting a light spot to one side of the electroforming nickel section by 0.2-1.5 mm for the first time, and programming is conducted by deflecting the light spot to one side of the electroforming nickel section by 1-2 mm for the second time. According to the electroforming nickel dissimilar metal vacuum laser welding process method, the problem of welding deviation during welding of electroforming nickel and high-temperature alloy dissimilar steel is solved, the quality and reliability of welding seams are improved, and the electroforming nickel dissimilar metal vacuum laser welding process method is suitable for manufacturing of key components such as thrust chambers.

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 relates to the technical field of micro-nano manufacturing, and provides a self-heating type electroforming cathode clamp and device integrated with a megasonic vibration patch, megasonic vibration acting on a whole electroforming liquid system directly acts on a cathode piece, so that the performance of a casting layer is regulated and controlled, and the self-heating type electroforming cathode clamp and device are integrated with the megasonic vibration patch by utilizing the characteristic that vibration generates heat. Precise self-heating is realized, so that the heating requirement on an electroforming solution is reduced, efficient utilization of energy is realized, and the production cost is greatly reduced; by installing the piezoelectric ceramic piece, the quartz piece and the cathode piece in a surface-mounted mode, it is ensured that vibration energy is efficiently transmitted to the working face of the cathode from piezoelectric ceramic in a low-loss mode, the loss of megasonic transmission is reduced to a great extent, megasonic has the advantages of being high in penetrating power, large in energy density and small in cavitation effect, and the energy efficiency is improved. And during working, a glue microstructure on the surface of the cathode is not damaged, so that the temperature and flow field distribution of a local area on the surface of the cathode can be improved, and the processing efficiency is improved.

The present invention discloses a shielding film, including a shielding area including a plurality of metal wires formed by micro-electroforming, and a buffer area formed by micro-electroforming, connected to at least one side of the shielding area, and used to reduce the overall thickness difference of the shielding area. The present invention also discloses a method for making a shielding film, the method comprising: providing a curing adhesive layer having a shielding area graphic groove and a buffer area graphic groove connected to the shielding area graphic groove; preparing a shielding area and a buffer area connected to the shielding area by micro-electroforming in the shielding area graphic groove and the buffer area graphic groove; separating the connected shielding area and the buffer area from the curing adhesive layer to obtain a shielding film. By preparing the shielding area by micro-electroforming and preparing the buffer area on at least one side of the shielding area, the overall thickness difference of the shielding area is small, so that the thickness of the shielding area is relatively uniform, thereby enhancing the electromagnetic shielding effect of the shielding film.

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.

The invention discloses an electroforming method for a micro gear. The electroforming method comprises the following steps: step 1, preparing polydimethylsiloxane insulating layer slurry and conductive layer slurry; 2, preparing a conductive core film; step 3, electroforming the micro gear; and fourthly, the miniature gear is subjected to demolding and aftertreatment, and the miniature gear is obtained. According to the method, polydimethylsiloxane is poured into a gear template, a conductive core film with an original template structure is obtained through copying and serves as a cathode, sheet metal serves as an anode, the conductive core film is immersed into an electroforming solution, electroforming is conducted in an electrodeposition mode, the micro gear is obtained through polishing aftertreatment, the precision of copying the original template of the micro gear is improved, and the yield of the micro gear is improved. The problems of gear deformation, tooth number errors, tooth shape errors and the like in traditional cutting machining are solved, the method has the advantages of being simple, efficient, high in gear precision, good in size control and the like, the high-precision miniature gear is manufactured in a short-process and low-cost mode, and the forming effect of the miniature gear is further improved.