44results about How to "Small heat affected zone" patented technology

The invention relates to the technical field of laser welding of micro-fluidic chips, in particular to a method and device for laser welding of a micro-fluidic chip. The method for laser welding of the micro-fluidic chip comprises the following steps: positioning the micro-fluidic chip, acquiring a local picture of the micro-fluidic chip through a visual detection module, controlling two end parts to automatically adjust positions on a space coordinate axis, and ensuring that a cover plate is tightly attached to the micro-fluidic chip; and the target heating light spot is aligned with the molten pool part, so that the matching degree of a real-time crystal phase image formed on the molten pool part and a target crystal phase image is larger than a set value, the welding procedure is completed in an automatic control and detection mode, and finally annealing is conducted to complete welding. The welding method is high in automation degree, laser welding is conducted through the laser welding head module, heating is fast, efficiency is high, and accurate and automatic welding is achieved by judging a crystal phase image.

The invention discloses a preparation method of an amphiphilic porous transmission layer, which comprises the following steps: 1) carrying out hydrophobization treatment on a titanium-based material to obtain a hydrophobic titanium-based material; (2) the hydrophobic titanium-based material obtained in the step (1) is subjected to laser regional burning treatment; and (3) carrying out hydrophilic treatment on the titanium-based material subjected to the cauterization treatment in the step (2) to obtain the amphiphilic porous transmission layer. According to the amphiphilic porous transmission layer provided by the invention, the amphiphilic porous transmission layer with a hydrophilic-hydrophobic alternating structure is constructed by combining a laser processing technology and a PTFE (Polytetrafluoroethylene) dipping hydrophobic modification technology, so that the split-diameter transmission of liquid water and oxygen in the titanium felt can be realized, the liquid water and the oxygen are efficiently discharged through a hydrophilic region and a hydrophobic region respectively, and the oxygen content in the titanium felt is reduced; and the mass transfer limitation of the electrolytic cell under high current density operation is greatly reduced, and the long-term operation life of the electrolytic cell is prolonged.

The invention discloses a short pulse laser assisted continuous laser welding device and method. The method comprises the steps that materials are laid; a welding area is divided, and the whole welding area is divided into small areas; performing feature extraction on the small regions; constructing a speed mapping table according to the extracted different features; and planning a laser scanning path according to the speed mapping table. The short-pulse laser-assisted continuous laser welding device and method have the beneficial effects that near-infrared wavelength laser (such as 1064nm) is selected in the whole welding process, and the characteristics of high reflectivity of titanium alloy to the wavelength, high absorptivity of thermoplastic resin, relatively low absorptivity of a resin part in a thermosetting composite material and poor absorptivity of carbon fibers to the wavelength are utilized; laser energy is mainly concentrated on the thermoplastic resin layer, and local heating is achieved. The method comprises the following steps: dividing a region into small regions, extracting features, constructing a speed mapping table, controlling laser energy input, and reducing heat affected zones of the titanium alloy and the thermosetting composite material.

The invention relates to a method for preparing a heterostructure magnesium alloy based on low-temperature friction stir additive in the field of metal processing, and designs a high-quality and high-efficiency cooling tool, which mainly comprises the following steps: firstly, cooling alcohol to low temperature by using liquid nitrogen; then the magnesium alloy plate to be machined is fixed to a cooling tool in a lap joint mode, and the tool mainly comprises a device body (1), a cooling liquid inflow hole (2), a cooling liquid outflow hole (3), a workpiece containing groove (4), a liquid storage chamber (5), a pressing plate (6) and fastening screws (7); then low-temperature alcohol is introduced, an advancing path and technological parameters are set, first-layer stirring friction additive manufacturing is conducted, and in the machining process, a stirring head and a workpiece are always kept to be submerged in cooling liquid; then, the surface obtained after material adding is milled to be flat, a layer of plate is overlaid on the other unmachined surface again, and the plate is fixed into the workpiece containing groove; and finally, second-layer friction stir additive manufacturing is conducted on the other face of the plate according to the same parameters and the same path. The method can be suitable for additive manufacturing of low-melting-point metal such as magnesium alloy and aluminum alloy at the same time, the multi-scale gradient heterostructure magnesium alloy can be prepared at the same time, the preparation efficiency is improved, and high-quality and low-cost preparation of heterostructure materials is achieved.

The invention relates to the field of laser cutting equipment, and discloses a laser cutting workbench for sheet metal processing, comprising: a cutting platform, on which a cutting table is arranged; a plurality of thorn plates arranged on the cutting table, for increasing the friction between the sheet metal plate and the cutting table; a moving frame arranged on the cutting table, on which a plurality of conveying shafts are arranged; a laser cutting head arranged on the cutting platform; a box body arranged in the cutting platform, the position of the box body being lower than the thorn plates and the moving frame; the invention improves the design of traditional laser cutting equipment, adds a box body and a liquid cooling system, solves the problem of spark and molten metal diffusion in the laser cutting process, and significantly improves the cutting quality and the safety of the working environment.

The invention discloses a capacitor lifting piece robot cooperative welding system and method. The system comprises an automatic box shell carrying robot, an automatic lifting piece welding device, an automatic box shell positioning and overturning device and an automatic lifting piece feeding device. The automatic box shell carrying robot is used for carrying capacitor box shells to the automatic box shell positioning and overturning device from the box shell feeding position. The automatic lifting piece feeding device is used for clamping lifting pieces, carrying the lifting pieces to the welding position and pressing the lifting pieces and the capacitor box shell. The lifting piece automatic welding device is used for welding the lifting piece and the capacitor box shell; and the automatic box shell positioning and overturning device is used for clamping, positioning and welding the capacitor box shell and overturning the capacitor box shell of which one side is welded for welding the other side.

The application discloses an ultra-long thin steel strip high-speed laser wire filling welding and on-line intelligent detection device and detection method, and belongs to the field of laser welding equipment. The device solves the problems of low weld seam tracking precision, unstable penetration, difficult defect early warning, non-closed loop quality verification, and non-traceable data of the ultra-long thin steel strip. A double-beam laser wire filling welding unit adopts a front high-power laser to realize high-speed deep penetration, and a rear swing laser to melt the welding wire and stir the molten pool. The two lasers work together in the molten pool. An on-line intelligent detection unit of the molten pool synchronously collects the crater shape, the molten pool appearance and the temperature field through a high-speed camera and an infrared thermal imaging system. A deep learning control unit establishes a defect correlation model based on the characteristics of the molten pool, and marks the suspected defect position in real time. An X-ray verification unit after welding automatically scans and verifies the marked area. The application realizes the high-speed, low-deformation and high-reliability continuous automatic welding production of the ultra-long thin steel strip with a length of greater than or equal to 50 m and a thickness of 1-6 mm.

A kind of metal pipe fitting electromagnetic forming device and method based on laser heating, with positioning system including positioner, first guide rail, first numerical control moving platform, for accurately positioning metal pipe fitting and mold coordinates;Conveying system includes second guide rail, numerical control moving platform, motor, for realizing the rotation and movement of metal pipe fitting;Heating system includes laser heating device, temperature detector;Electromagnetic forming system includes spiral tube coil, mold, capacitor, DC power supply and control switch;Its characterized in that, motor, fixture, metal pipe fitting, mold, spiral tube coil are horizontally distributed on the same axis, metal pipe fitting can be rotated with the help of motor, and can be moved in the gap between spiral tube coil and mold with the aid of conveying system.The present application can realize uniform heating when metal pipe fitting electromagnetic warm forming, greatly improve heating efficiency, reduce heat affected zone, and improve the position accuracy of metal pipe fitting local microstructure electromagnetic forming.

The present application relates to battery terminal component manufacturing technology field, especially relates to a kind of welding line and welding method of full-automatic wiring terminal, including vibration arrangement mechanism, transfer mechanism, rotary disc fixture mechanism and welding mechanism, utilize the mutual cooperation of vibration arrangement mechanism, transfer mechanism, rotary disc fixture mechanism and welding mechanism, with vibration arrangement feeding, transfer transplant, rotary intermittent indexing clamping, mid-frequency induction heating, automatic wire feeding fusion welding, automatic unloading and discharging each process integration, replace traditional manual sorting, single positioning, manual welding, manual unloading operation mode, realize wiring terminal from messy bulk to finished product welding complete full-process unmanned automation operation, production line coherence is strong, process link is closely, substantially reduce manual intervention.

The invention relates to a manufacturing method of a split flexible gear, which is applied to the field of welding and comprises the following steps: respectively manufacturing a cup body and a flange plate; putting the cup body and the flange plate into cleaning equipment, and performing surface treatment on the cup body and the flange plate; the cup body is assembled on the flange plate to form a workpiece; a brazing filler metal and a stop-off agent are placed on the lap joint face between the cup body and the flange plate; the whole workpiece is put into a vacuum brazing furnace, and a vacuum system is started to vacuumize the interior of the vacuum brazing furnace; and the temperature in the vacuum brazing furnace is increased to the target brazing temperature. The mode of integrally machining the flexible gear through a complex deep-cavity thin-wall part in the prior art is optimized and decomposed into two relatively simple parts to be welded and machined, the production process is optimized and shortened while raw materials are saved, a heat affected zone can be greatly reduced through vacuum brazing, and the production quality and the production efficiency of the flexible gear are improved.

This invention relates to an electron beam welding method for ZL114A / ZL270 dissimilar aluminum alloy materials, belonging to the field of electron beam welding technology. It addresses one of the problems encountered in existing electron beam welding methods for ZL114A / ZL270, namely, the presence of obvious cracks, incomplete fusion, and excessive internal porosity within the weld seam. The electron beam welding method of this invention includes: tack welding of assembled ZL114A and ZL270 alloy test plates; welding using a dual electron beam synchronous welding method with one electron beam preheating the weld seam first, followed by the other electron beam for the final welding; during the final welding process, the center of the electron beam spot is shifted from the butt joint of the test plates towards the ZL270 alloy plate side.

The invention relates to the technical field of temperature and pressure monitoring cable splicing, and provides an SAGD lifting operation temperature and pressure monitoring cable rapid splicing cold welding method which comprises the following steps: S1, preparation work; s2, point solidification is carried out; s3, welding is conducted; s4, post-welding treatment is carried out; s5, a welding seam is inspected; according to the method, a stable and uniform welding foundation can be provided for subsequent argon tungsten-arc welding filling and capping through cold welding bottoming, and the overall welding quality can be improved; argon tungsten-arc welding which has the advantages of being concentrated in heat, narrow in weldment heat affected zone, small in welding deformation and high in welding quality is selected for seam filling so as to ensure the sealing performance, and then argon tungsten-arc welding is used for covering so as to ensure the attractiveness and the protection effect of welding seams; the method is suitable for high-temperature underground operation of SAGD, fireflooding, electric heating wells and the like due to simple and convenient operation and good sealing performance and corrosion resistance, and the use requirements in different environments are met.

The utility model relates to a kind of differential and vehicle, its shell is fixedly connected by welding with main reduction gear, shell is constituted by two half shells and is respectively installed in the axial both sides end surface of main reduction gear. Fixed part for and half shell welding is equipped on the axial both sides end surface of main reduction gear, and positioning part spaced apart from fixed part welding area in radial direction is also equipped, and positioning part supports half shell when welding. The technical scheme will positioning part and welding area be spaced apart, avoid the influence of positioning accuracy by heat distortion generated in welding process, can effectively improve the assembly accuracy and overall performance of differential, ensure the reliable operation of differential.

The invention discloses a preparation method of a super-hydrophobic flexible photothermal conversion film, and belongs to the technical field of solar photothermal conversion. The preparation method of the super-hydrophobic flexible photo-thermal conversion film comprises the following steps: preparing a metal organic framework material into a flexible film, and then processing the flexible film by utilizing femtosecond laser direct writing to obtain the super-hydrophobic flexible photo-thermal conversion film. The prepared super-hydrophobic flexible photo-thermal conversion film has wide-spectrum absorption on incident sunlight, and the periodic micro-nano structure on the surface of the film can effectively reduce macroscopic surface reflection, so that the photo-thermal conversion performance is improved; the periodic micro-nano structure on the surface of the film can enable the film to have an excellent super-hydrophobic self-cleaning function, the influence of pollution sources such as body surface sweat on a thermal therapy device attached to the skin surface can be reduced, and the service life of the wearable thermal therapy equipment is effectively prolonged.

The invention discloses a sensor part heat treatment cutting device which comprises a supporting frame, a heating box, a heating pipe, a controller and a cutting unit, the bottom of the heating box is fixedly installed on the top of the supporting frame, and a pipe base of the heating pipe is fixedly installed on the inner wall of the heating box; and the bottom of the controller is fixedly mounted at the top of the heating box. When the metal part is heated through the heating box, the sensor part can be heated to a preset heat treatment temperature, so that the internal stress of the metal material is released; a subsequent laser cutting head is performed after local heating, so that material deformation and stress release in the cutting process are minimized; in the laser cutting process, due to the fact that metal is in a high-temperature state, the hardness of materials is low, stress during cutting is more uniform, and deformation is reduced, heat affected zones can be reduced as much as possible through efficient heating of the heating box and precise control of the laser cutting head, and therefore the overall strength and precision of parts are improved.

The application discloses a micro high-precision perovskite erasable circular polarization patterning device and a preparation method thereof. The micro high-precision perovskite erasable circular polarization patterning device comprises, from top to bottom, the following structures: a cholesteric liquid crystal layer, a transparent separation layer, a light-emitting pattern layer and a substrate. The micro high-precision perovskite erasable circular polarization patterning device utilizes the ultra-high peak intensity of femtosecond laser and the digital processing characteristics of a laser direct writing system to realize high-precision micro patterning in a specified area of a perovskite thin film, and the pattern is only visible in fluorescence, and the pattern disappears after heat treatment; meanwhile, the device has high precision and excellent fluorescence characteristics, and has wide application prospects in the fields of information encryption, optical switches and multiple anti-counterfeiting.

The application discloses an aluminum alloy box unequal-thickness butt joint friction stir welding method, which comprises the following steps: process placing of an upper panel of an aluminum alloy box, increasing a friction stir welding arc receiving plate area; cleaning the left panel, the right panel and the upper panel of the aluminum alloy box, adopting mechanical polishing and cleaning; positioning and assembling the left panel, the right panel and the upper panel on a tool, controlling the assembly gap and the misalignment to be not greater than 0.5 mm; setting the parameters of the friction stir welding, and welding the weld joints between the left panel and the upper panel and between the right panel and the upper panel. The aluminum alloy box unequal-thickness butt joint friction stir welding method utilizes the advantages of the friction stir welding to improve the welding deformation, improves the welding quality and improves the production efficiency.

The invention belongs to the technical field of pressure measurement. The dynamic pressure sensor resistant to the temperature of 850 DEG C and excellent in temperature stability comprises a closed inner cavity defined by an upper shell, a middle shell, a lower shell and a diaphragm, and a piezoelectric sensitive assembly arranged on the inner side of the diaphragm. The piezoelectric sensitive assembly comprises an upper crystal group and a lower crystal group which are composed of high-temperature piezoelectric crystals, a mass block in the middle and thermal expansion matching ceramic chips at the two ends, and is axially pre-tightened through a bolt and nut assembly. The upper and lower crystal groups are output in parallel with opposite polarities to realize active acceleration compensation; the thermal expansion matching ceramic chip is made of YBP series ceramic, so that high-temperature thermal stress is effectively relieved; all metal pieces are made of 316L stainless steel and are sealed through laser welding, internal signals penetrate through the aluminum oxide ceramic tube through the electrode plates and the nickel wires to be led to the signal output contact pin, the sensor is provided with an active acceleration compensation and thermal expansion matching structure, and high-stability and high-sensitivity dynamic pressure measurement under the high-temperature severe environment is achieved.

The invention discloses a laser friction hybrid welding system and a laser friction hybrid welding process, and belongs to the field of welding. According to the technical scheme, the laser friction hybrid welding system comprises a laser module and a feeding module, the feeding module comprises a first feeding assembly and a second feeding assembly, the first feeding assembly comprises a first main shaft device, and the output end of the first main shaft device is connected with a first clamping device; the second feeding assembly comprises a second main shaft device and a linear driving device, the driving end of the linear driving device is connected with the second main shaft device, the output end of the second main shaft device is connected with a second clamping device, and the first clamping device directly faces the second clamping device; the laser module comprises a laser head, and the laser head is located above the position between the first clamping device and the second clamping device. According to the scheme, friction welding and laser welding are conducted synchronously, welding heat is guaranteed, workpieces are fully welded, meanwhile, due to the fact that the workpieces are heated through laser after abutting, the stability of the shapes of the workpieces is guaranteed, and the problems of flash and the like are solved.

The invention discloses an optical fiber beam combiner structure based on a single-mode optical fiber and a metasurface and a preparation method of the optical fiber beam combiner structure, belongs to the field of optical fiber beam combiners, and maximizes the output optical power of the beam combiner structure through structural cooperation among the single-mode optical fiber, a coreless optical fiber and a micropore area of the single-mode optical fiber with the punched side face. The beam combiner mainly comprises a beam combiner structure, the beam combiner structure comprises a single-mode optical fiber and a single-mode optical fiber with a punched side face, the end portion of the single-mode optical fiber is a coreless optical fiber, the coreless optical fiber is subjected to beveling processing, the single-mode optical fiber with the punched side face is provided with a micropore, the micropore is provided with a metasurface made of a silicon substrate, and the metasurface is made of a silicon substrate. And the diagonal plane at the coreless optical fiber faces the micropore area of the side-punched single-mode optical fiber, so that the output optical power among the micropore areas of the single-mode optical fiber, the coreless optical fiber and the side-punched single-mode optical fiber is maximum, and the single-mode optical fiber and the side-punched single-mode optical fiber are cured. The invention is mainly used for the optical fiber beam combiner.

The invention discloses a manufacturing method of a one-piece track shoe for a special vehicle. The manufacturing method comprises the following steps that the weight of a forging stock is calculated, and blanking is conducted; horizontally placing the blanked round steel into a furnace in a single-layer manner, carrying out heat preservation, starting forging, and trimming by utilizing waste heat after forging is completed; the track shoe is flatly loaded into a material frame to be subjected to heat treatment, and shot blasting treatment is conducted on the track shoe after heat treatment is completed; a boring machine clamp is designed and manufactured, the boring machine clamp is installed on a common boring machine or a horizontal machining center, and the sizes of the two end faces, the pin holes, the end faces of the U-shaped grooves, the chamfers and the landing ribs of the track shoe are machined to the final sizes at a time; the landing rib is subjected to medium-frequency quenching treatment; and carrying out low-temperature tempering treatment on the whole track shoe after medium-frequency quenching. The method has the characteristics of high processing quality and efficiency, low production cost and the like, and is worthy of popularization and application.

The invention relates to the technical field of semiconductor welding, and provides a high-frequency induction welding semi-automatic brazing tool and a using method thereof.The high-frequency induction welding semi-automatic brazing tool comprises a frame, a positioning and clamping mechanism and a welding mechanism, a workbench is formed on the frame, and a welding station is arranged on the workbench; the positioning and clamping mechanism is movably arranged on the workbench and is movably arranged on the peripheral side of the welding station, and the positioning and clamping mechanism is used for clamping and positioning a workpiece on the welding station; the welding mechanism is arranged on the workbench and located on the peripheral side of the welding station, the welding mechanism comprises a three-axis moving platform and a high-frequency induction welding module, and the high-frequency induction welding module is connected to the tail end of the three-axis moving platform; the three-axis moving platform is used for driving the high-frequency induction welding module to move on the workbench. According to the tool, welding deformation can be prevented, and the product quality and the welding efficiency are effectively improved.

The application provides a tunable pulse train laser and a design method thereof, the laser comprising a pumping light fiber coupling focusing system, a cavity mirror, a laser crystal, a passive Q-switching crystal, an active Q-switching system and a laser output mirror arranged in sequence according to an optical path; the tunable pulse train laser is configured to: in a working state, through the equivalent length control of the passive Q-switching crystal and the modulation control of the active Q-switching system, the number of pulse trains is controlled under the same main frequency, or the same pulse train is output under different main frequencies. The application uses the active Q-switching system and the passive Q-switching crystal in cooperation, uses the active Q-switching and the passive Q-switching in combination to obtain the output of the main frequency plus the pulse train, is favorable for the multiple processing at the same point in the fine machining, and the single pulse energy is constant, thereby providing a pulse train laser scheme which is lower in cost, more ingenious and simple in structure, good in regulation flexibility, and higher in stability and reliability of the laser.

The utility model discloses a steel rail heating inductor with adjustable axial temperature uniformity, which comprises a heating outer cover, a base metal induction heating coil, a transition section induction heating coil, a forming section induction heating coil and a heel induction heating coil, the outer wall of one side of the heating outer cover is provided with a feeding port right opposite to the four sets of coil modules. The induction heating device further comprises three adjustable connecting copper bars, a coil extension copper pipe and a main output copper bar. The base metal induction heating coil, the transition section induction heating coil, the forming section induction heating coil and the heel induction heating coil are connected in series through the three adjustable connecting copper bars and then electrically connected with the main output copper bar through the coil extension copper pipe. The mode of a heating area can be dynamically adjusted according to different rail shapes, so that the rail is uniformly heated, the length of a heat affected area is shortened, and the stability and repeatability of the overall heat treatment quality of a turnout are improved.

The application discloses a processing method of an elongated spring rod, and specific steps are as follows: ① blanking: preparing blanks and blanking according to the size of each part in the elongated spring rod; ② semi-finishing: semi-finishing the blank of each part to meet the assembly requirement; ③ assembly welding: assembling each part according to the drawing requirement and adopting laser deep penetration welding to perform assembly welding; ④ finishing: finishing the spring rod assembly; ⑤ quenching: performing laser surface quenching on the middle part of the spring rod assembly; and ⑥ final inspection: performing inspection on the spring rod assembly according to the drawing requirement. The application makes the deformation of the elongated spring rod small, shortens the processing period and reduces the production cost. Meanwhile, the application prolongs the service life, improves the processing efficiency and greatly improves the qualified rate of finished products.

The invention provides a method for spraying 304 austenitic stainless steel on the surface of a copper plate through stud welding. The method specifically comprises the steps that firstly, the surface of the copper plate is treated; then, welding voltage is set on an energy storage type stud welding machine, and an end block of the 304 austenitic stainless steel stud is driven into the copper plate through a stud welding gun; electrifying the stud welding gun to ignite the electric arc, fully melting the end block and the copper plate at the end block, and welding the 304 austenitic stainless steel stud on the copper plate after the molten metal is naturally cooled and solidified; and knocking off a boss and a screw rod of the 304 austenitic stainless steel stud, and observing that the solidified 304 austenitic stainless steel metal layer covers the surface of the copper plate. Stud welding spraying is used, a cladding layer is formed on the surface of the end block and the surface of the copper plate at high temperature, and after molten metal is solidified, high-strength combination is formed between the 304 austenitic stainless steel metal layer and the copper plate; and the 304 austenitic stainless steel metal layer coated on the copper plate is high in hardness and good in wear resistance.

The invention discloses a laser cutting system and method for a halogen-free insulating cladding. The system comprises a laser shaping mechanism, a middle transmission mechanism, a laser cutting mechanism and a horizontal moving mechanism. The laser shaping mechanism is used for adjusting the shape and peak power of a light spot emitted by the water-cooled laser; the middle transmission mechanism is used for switching the circular light spots emitted by the laser shaping mechanism and transmitting the circular light spots to the upper laser light path part or the lower laser light path part; the laser cutting mechanism comprises an upper laser light path part and a lower laser light path part which are oppositely arranged; a plurality of wire rods are loaded on the horizontal moving mechanism, the horizontal moving mechanism is matched with the upper laser light path part and the lower laser light path part by horizontally moving the wire rods, and the upper path and the lower path are switched to emit light to conduct annular cutting on the wire rods. According to the invention, the halogen-free insulating cladding of the wire rod can be ensured to be always at a focus, so that the halogen-free insulating cladding is cut, and meanwhile, the phenomenon that mushroom heads and materials are melted into a central core layer is avoided.

The invention discloses a preparation method of a high-temperature self-lubricating coating of a high-strength steel gun barrel piercing plug. The preparation method comprises the following steps: 1) preparing powder; the preparation method comprises the following steps: preparing a FeCoNiCrMn alloy through a ceramic crucible of a vacuum medium-frequency induction furnace, and obtaining FeCoNiCrMn powder through an atomizing nozzle; 2) homogenizing the powder; (3) plasma surfacing is conducted on the surface of the high-strength steel gun barrel piercing plug base material, and a high-strength steel gun barrel piercing plug workpiece with a coating is obtained; and (4) the high-strength steel gun barrel piercing plug workpiece with the coating is installed on high-strength steel gun barrel piercing equipment, the steel pipe blank is heated to 600 + / -1 DEG C, then piercing treatment is conducted on the steel pipe blank under the constant temperature condition of 600 + / -1 DEG C, and the high-temperature self-lubricating coating with the glaze film attached to the surface of the high-strength steel gun barrel piercing plug is obtained. By adopting the scheme provided by the invention, the failure time of the high-strength steel gun barrel piercing plug can be obviously prolonged without using a lubricant and by using the low-cost high-strength steel gun barrel piercing plug, and the service life of the high-strength steel gun barrel piercing plug is prolonged.

The application discloses a curved surface integrated perovskite vehicle-mounted photovoltaic glass and a preparation method thereof. The photovoltaic glass is composed of a curved surface conductive glass, a hole transport layer, a perovskite light absorption layer, an electron transport layer, a transparent back electrode, a wire, a water and oxygen barrier film, a hot melt adhesive film and a cover plate curved surface glass, which are stacked in sequence from top to bottom. The application adopts a full dry method vapor deposition process to directly prepare each functional layer on the curved surface substrate, and completes integrated preparation through wire leading-out, water and oxygen barrier film deposition and laser low-temperature packaging. The application solves the problems of poor curved surface adaptability, easy defects of film layers and insufficient packaging stability of traditional planar photovoltaic components, and each film layer is uniform and dense, and the interface is firmly combined, so that the power generation performance and weather resistance reliability of the device are effectively improved, and the application is suitable for curved surface vehicle-mounted application scenarios such as a sunroof, a side window, a rear windshield and an engine cover of a new energy vehicle.

The application discloses a manufacturing method of a ceramic micro-flow channel carrier for high-power devices and relates to the field of ceramics. The manufacturing method comprises the following steps: after punching a green ceramic sheet, tungsten slurry is used to fill the holes and conductor patterns are printed on the surface of the green ceramic sheet; then, a bottom plate micro-flow channel layer is laminated and a sacrificial material is filled in the micro-flow channel cavities; then, the bonding interface between the cover plate and the bottom plate is subjected to ultraviolet laser roughening treatment; then, two-step isostatic pressing forming treatment is performed; after cutting into a bar, the bar is subjected to glue removal, sintering, hot pressing leveling, grinding, polishing and seed layer deposition; then, exposure development is performed and the line layer is thickened by electroplating; then, secondary photolithography processing is performed on the chip eutectic area to open a window; finally, gold tin evaporation treatment, stripping of the photoresist and cutting are performed, so that the ceramic micro-flow channel carrier for high-power devices is obtained. According to the specific manufacturing process, the mechanical strength, the dielectric property, the heat fatigue resistance and the micro-flow channel pressure resistance are improved while the heat dissipation property is maintained.