341 results about "Tinning" patented technology

The invention relates to a composite cable, and relates to the technical field of cables, the composite cable comprises a conductor layer, a composite insulating layer, a waterproof layer, a weather-proof sheath layer and an armor layer from inside to outside in sequence, the conductor layer comprises at least six tinned copper conductors, the tinned copper conductors are symmetrically arranged in a regular hexagon shape, dielectric elastomers are filled among the conductors, and the dielectric elastomers are arranged between the tinned copper conductors. The composite insulating layer comprises an inner shielding layer, a main insulating layer and an outer shielding layer from inside to outside, the waterproof layer is a fluororubber extruded layer, the weather-proof sheath layer comprises a bonding transition layer and a weather-proof functional layer, and the armor layer is of a stainless steel band spiral wrapping structure. The composite cable can meet the requirement for high performance in a harsh environment and can show excellent performance under the extreme conditions of low voltage, large day and night temperature difference, strong ultraviolet rays, sand and dust abrasion, acid rain corrosion and the like.

The invention belongs to the technical field of cables, and particularly relates to a bending-resistant tow chain cable for a robot, which comprises a conductor core layer, an insulating layer, an inner sheath layer, a braid layer, a non-woven fabric layer and an outer sheath layer, the insulating layer wraps the conductor core layer, the inner sheath layer is positioned outside the insulating layer, the braid layer covers the inner sheath layer, the non-woven fabric layer is positioned outside the inner sheath layer, and the non-woven fabric layer is positioned outside the outer sheath layer. The non-woven fabric layer is wound on the braid layer, the outer sheath layer wraps the non-woven fabric layer, the conductor core layer is formed by twisting a plurality of flexible tinned copper wires and aramid fibers, and the surfaces of the flexible tinned copper wires are coated with carbon nanotube coatings; according to the invention, the thickness of the carbon nanotube coating is controlled to be 3-5 [mu] m, and the carbon nanotube coating is prepared by adopting a coating process, has excellent conductivity and mechanical strength, can effectively reduce the contact resistance change of the flexible tinned copper wire in the repeated winding process, and enhances the wear resistance and corrosion resistance of the surface of the copper wire, thereby prolonging the service life of the conductor core layer.

The invention discloses a high-performance anti-interference low-voltage cable, which relates to the technical field of power transmission equipment, and is technically characterized by comprising a conductor core, an insulating layer, a shielding layer, a buffer layer and an outer sheath which are sequentially and coaxially arranged from inside to outside, the conductor core is made of a plurality of strands of tinned copper wires through a double stranding process of bunch stranding and compound stranding; the insulating layer coats the outer side of the conductor core; the shielding layer is of a double-layer structure and comprises an inner-layer aluminum-plastic composite belt and an outer-layer tinned copper wire braid layer, and an aluminum layer of the aluminum-plastic composite belt faces the inner side and is in equipotential connection with the conductor core. A layer of conductive carbon fiber cloth is wrapped on the outer side of the braid layer; the buffer layer is filled between the shielding layer and the outer sheath, and a plurality of aramid fiber reinforcing ribs are uniformly embedded in the buffer layer along the axial direction of the cable; the thickness of the outer sheath is made of a weather-resistant polyvinyl chloride material added with an ultraviolet light absorber and an anti-aging agent, and the inner surface of the outer sheath is provided with an anti-skid groove. And a nano montmorillonite filler is uniformly dispersed in the outer sheath.

The invention relates to the technical field of cable production, and discloses a new energy charging heat-conducting flame-retardant cable which sequentially comprises a conductor layer, a heat-conducting insulating layer, a self-healing layer, a shielding layer, a mechanical enhancement layer and a flame-retardant outer sheath layer from inside to outside. The conductor layer is formed by a plurality of stranded tin-plated copper wires or nickel-plated copper wires; the heat-conducting insulating layer is composed of a crosslinked polyethylene matrix, a two-dimensional heat-conducting filler and phase-change temperature-adjusting microcapsules, the two-dimensional heat-conducting filler comprises a mixture of boron nitride nanosheets oriented by an electric field and graphene, and the mass fraction of the filler is 40%-55%; a core material of the phase-change temperature-adjusting microcapsule is a compound of paraffin and stearic acid. According to the scheme, trace rare earth and silver elements are introduced into the conductor to form a Cu-Ag-RE solid solution structure, so that the crystal integrity and the oxidation resistance of the conductor are remarkably improved; the structure still keeps excellent conductivity and bending resistance at high temperature, so that the cable can stably operate for a long time in a high-temperature and strong ultraviolet environment during charging, and the conductivity efficiency is improved.

The invention relates to a nanometer enhanced intelligent monitoring silicone rubber cable and a preparation method thereof, and the cable comprises a conductor unit and a nanometer composite insulating layer which is extruded at the outer side of the conductor unit; the gradient shielding structure is sequentially arranged on the outer side of the nano composite insulating layer in a sleeving mode, the gradient shielding structure, the inner tinned monofilament braid layer and the middle aluminum-plastic composite heat insulation wrapping tape are bonded through a conductive adhesive layer, and fiber bundles of the outer basalt fiber braid layer are embedded into surface grooves of the middle aluminum-plastic composite tape to form a mechanical interlocking structure; the distributed sensing unit is embedded between the middle shielding layer and the outer shielding layer, and the outer sheath layer is extruded on the outer side of the gradient shielding structure. According to the invention, the problems of poor aging resistance, weak shielding and sensing distortion of a traditional cable are solved. The tensile strength retention rate after aging at 150 DEG C is greater than or equal to 85%, the electromagnetic interference attenuation is improved by 14dB, the signal distortion rate during bending is less than or equal to 5%, and the cable is suitable for intelligent monitoring in high-temperature, high-humidity and strong-corrosion environments.

The invention discloses a compression-resistant and wear-resistant cable and a preparation method thereof, the compression-resistant and wear-resistant cable comprises a cable core, a wrapping layer and a sheath layer, the cable core is formed by twisting a plurality of wire cores, each wire core is composed of a conductor formed by twisting a plurality of tinned copper wires and an insulating layer wrapping the conductor, and fillers are arranged between the wire cores and the wrapping layer; the outer sheath layer is prepared from the following components in parts by weight: 100 parts of a polyurethane elastomer, 10-15 parts of a modified filler, 1-2 parts of a lubricant, 0.5-0.7 part of an antioxidant and 0.3-0.5 part of an ultraviolet light absorber. According to the pressure-resistant and wear-resistant cable, the modified filler prepared by a specific method is added into the outer sheath layer, and the interface bonding strength of the filler and a polyurethane matrix is greatly enhanced, so that the cable sheath layer is endowed with excellent tear strength, compression resistance and wear resistance, and the service life of the cable in a harsh industrial environment is remarkably prolonged.

The utility model discloses a flexible high frequency data cable, include: conductor, the extrusion of conductor has PE insulating layer and forms core, is provided with foamed layer on PE insulating layer, the thickness of foamed layer accounts for 75% of PE insulating layer total thickness, and the foaming rate of foamed layer is 60%~65%, and every two core wire pairs form a pair of double -twisted pair, and the twisting pitch of every pair of double -twisted pair is different, and the aluminium -plastic composite tape is wrapped on double -twisted pair, and four pairs of double -twisted pair with aluminium -plastic composite tape are twisted into cable core, and the overlap gap of aluminium -plastic composite tape on each double -twisted pair all faces outward, and the tinned copper wire braid is woven on cable core, and the tinned copper wire braid covers and presses on the overlap gap of aluminium -plastic composite tape, and the weaving density of tinned copper wire braid is 70%, and the tape is wrapped on tinned copper wire braid, and the sheath is extruded on tape. The utility model can prevent the signal crosstalk between double -twisted pair without heat sealing to aluminium -plastic composite tape, thereby protecting PE insulating layer from being damaged.

The application belongs to the technical field of circuit board preparation, in particular to a PCB circuit board production line, which comprises a cutting machine for cutting and opening fixed holes of an insulating substrate, a copper deposition tank for depositing a conductive layer on the surface of the substrate, a film laminating machine for laminating a film on the substrate and using a solution to produce a circuit pattern on the substrate, an electroplating device for tinning the copper foil of the substrate to prevent damage during etching, a tin stripping machine for cleaning and removing the protective tin on the surface of the substrate, a screen printing device for screen printing text on the PCB, and a rack for loading and transferring the PCB circuit board during processing. The rack can maintain better balance during transfer and will not have the problem of "head heavy and foot light". In addition, the distance between the moving plate and the moving plate and the distance between the moving plate and the fixed plate can be adjusted by the bidirectional screw rod, so that PCB circuit boards of various thicknesses can be loaded and transferred, improving the applicability of the device.

The invention provides a lead welding method for a semiconductor chip, and belongs to the technical field of semiconductor packaging. The method comprises the following steps: processing a metal capillary tube into a through-hole-shaped female end with a preset length, and carrying out functional coating treatment on the inner surface and the outer surface of the through-hole-shaped female end; positioning the plated female end in a manner that the through hole is axially parallel to a chip bonding pad, and fixing the plated female end by reflow soldering of a first solder; carrying out pre-tinning treatment on the welding end of the metal lead; inserting a lead welding end into the female end through hole; and low-temperature reflow soldering with the peak temperature lower than the melting point of the first solder is carried out, so that the tin coating is molten and metallurgically bonded with the inner surface coating of the female end. By introducing the capillary tube female end which is low in cost and easy to process and a step-by-step low-temperature welding process, the heat damage risk of the heat-sensitive semiconductor chip is remarkably reduced while the connection reliability is ensured, the production efficiency and the process compatibility are improved, and the method is particularly suitable for wire bonding of thermoelectric refrigeration chips.

The utility model discloses a new energy automobile copper clad aluminum braided shield high voltage cable in the technical field of high voltage cable, including stranded copper conductor, the fixed extrusion of insulating layer has on the outer wall of stranded copper conductor, the insulating layer is cross -linked polyethylene or cross -linked polyolefin insulating layer, the insulating layer outside fixedly set semiconductive inner layer, fill in the PP filling strip between semiconductive inner layer with insulating layer, the outer wall of semiconductive layer extrudes and has copper clad aluminum braided shield layer, copper clad aluminum braided shield layer is 0.1~0.2 tinned copper clad aluminum wire, and with semiconductive inner layer is 360 degree ring pressure contact, the outer wall of copper clad aluminum braided shield layer fixed extrusion has aluminum foil layer, the outer wall of aluminum foil layer fixed extrusion has semiconductive outer layer, the outer wall of semiconductive outer layer fixed extrusion has cross -linked polyolefin sheath, the utility model discloses can reduce the shielding layer direct current resistance, guarantees the continuity of grounding, promotes high -frequency shielding efficiency, strengthens in 100kHz~30MHz frequency band shielding attenuation.

The utility model relates to the technical field of hot-dip tin, in particular to metal wire hot-dip tin processing equipment, which comprises support frames, a mounting plate, a connecting plate, a mounting frame, a stepping motor, a bidirectional screw rod, an upper conveying seat, a lower conveying seat and a wire clamping mechanism, the two support frames are fixedly connected with the connecting plate, the connecting plate is fixedly connected with the mounting plate, and the mounting frame is fixedly connected with the bidirectional screw rod. The mounting plate is provided with a wire clamping mechanism and a mounting frame, the mounting frame is provided with a stepping motor, an output shaft of the stepping motor is provided with a bidirectional lead screw through a coupler, the bidirectional lead screw is provided with an upper conveying seat in a threaded mode, and the bidirectional lead screw is provided with a lower conveying seat in a threaded mode. The paint sleeves on the upper blade set and the lower blade set are scraped through the scraping plate and the scraping piece, so that the paint sleeves fall into the collecting box through the flow guide frame, the paint sleeves can be prevented from being attached to the upper blade set and the lower blade set, and the influence on the cutting effect is avoided.

The utility model discloses a cable assembly processing device, and belongs to the technical field of cable assembly processing. Comprising a base body supporting module, a circular track conduction module, a cable peeling module, a tin layer polishing module, an inner conductor welding module and an outer conductor welding module. The base body supporting module supports the whole structure, the circular track conduction module achieves circulation of a cable to be processed among stations, the cable stripping module is used for stripping rubber at the end of the cable, the tin layer polishing module is used for polishing a tin coating of the cable, and the inner conductor welding module is used for welding a cable head welding cup and a cable core. The outer conductor welding module is used for welding a cable head vent hole and a cable tin coating part. The equipment is compact in structure, stable in movement, high in precision, good in reliability, high in machining quality, good in consistency, easy to assemble and convenient to operate due to the adoption of modular layout; and automatic processing of the cable assembly can be realized.

The utility model discloses a tinning device for a red copper bar, which relates to the technical field of tinning equipment and comprises a tinning bath, two partition plates are arranged in the tinning bath, and the two partition plates divide the tinning bath into a first chamber, a second chamber and a third chamber; through holes are formed in the surfaces of the two partition plates at equal intervals. According to the utility model, the plurality of partition plates are arranged in the tinning bath, so that the tinning bath can be divided into a plurality of chambers with different tinning liquid depths, red copper with different lengths can be conveniently discharged into the specified chambers for tinning, the tinning liquid in the tinning bath does not need to be added, and the cost is reduced to a certain extent; and meanwhile, through the through holes formed in the surfaces of the partition plates, the connecting pipe, the circulating pump, the filter box and the like, the tinning liquid can circularly flow step by step, the temperature and components of the tinning liquid can be more uniform, the problem that a coating is not uniform due to local temperature or component difference is solved, and therefore the quality of the tinning layer of the red copper bar is improved.

The invention relates to a welding method of a solar battery, which comprises the following steps of: providing a battery piece, and arranging a grid line on the side surface of the battery piece; forming an organic solderability preservative film on the side surface of the battery piece, and enabling the organic solderability preservative film to cover the outer surface of the grid line; completely removing the organic solderability preservative film covering the part, needing to be welded with the welding wire, of the grid line, so that the part, needing to be welded with the welding wire, of the grid line is exposed; wherein in the process of removing the organic solderability preservative film at the position, where the welding wire needs to be welded, on the grid line, the temperature of the position, except for the welding wire, on the battery piece is made to be smaller than or equal to 200 DEG C; and the exposed parts on the grid lines are welded and connected with the welding wires. On one hand, the organic solderability preservative film covers the outer surface of the grid line, an anti-oxidation effect can be achieved, and compared with a tin plating process, the production cost is low; and on the other hand, the temperature of the parts except for the welding wire on the battery piece is controlled to be less than or equal to 200 DEG C, and the temperature is relatively low, so that the influence on the performance of an amorphous silicon layer, a silicon substrate and the like of the battery piece can be avoided.

This utility model discloses a wire-pair shielded data transmission cable with high transmission performance, comprising: a cross-shaped frame, the four isolation walls of the cross-shaped frame having different wall thicknesses, a buffer groove provided at the top of the isolation wall, and a folded groove aligned with the bottom of the buffer groove on the outer wall of the isolation wall, a filling rope and a set of twisted core wires arranged in the cavity between two adjacent isolation walls, aluminum-plastic composite tape wrapped around the twisted core wires, and tinned copper wire braided tape woven on the cross-shaped frame, the tinned copper wire braided tape being in direct contact with the aluminum surface of the aluminum-plastic composite tape, the tinned copper wire braided tape abutting against the twisted core wires and compressing the buffer groove, the groove wall of the buffer groove bending along the folded groove and abutting against the tinned copper wire braided tape after being compressed by the tinned copper wire braided tape, a wrapping tape wrapped around the tinned copper wire braided tape, and a sheath extruded onto the wrapping tape. This utility model has a simple structure and excellent signal shielding performance both internally and externally.

The utility model discloses an electroplating oven for preventing a copper surface area from being polluted and oxidized during tin electroplating, which comprises an oven body, placing components arranged on two sides of the inner wall of the oven body, a temperature control component arranged on the inner wall of the oven body, a processing component connected below the oven body, and a cleaning component arranged on one side of the processing component. According to the drying oven, the humidity in the drying oven can be effectively reduced, the risk of copper surface oxidation can be reduced, pollutants in air can be continuously removed, cyclic utilization of gas in the drying oven is achieved, the energy utilization efficiency is improved, meanwhile, the cleaning assembly is arranged on the treatment assembly, the air humidity can be reduced, dust, impurity particles and organic gas can be adsorbed, and the environment is protected. The environment in the oven is kept clean, the oxidation risk of a copper surface is reduced, the filter element plate can be regularly wiped and cleaned, the situation that the filter efficiency of the filter screen is reduced due to pollutant blockage is prevented, the workload and frequency of manual cleaning are reduced, and the maintenance cost and the failure rate are reduced.

The application discloses a cold-pressing connection method for high-voltage outgoing lines and tap switches of a transformer, which comprises the following steps: firstly, determining the wire specifications and the wire quantity to be connected, and determining the tinned copper sleeve specifications; calculating the filling rate according to the wire cross-sectional area and the effective internal area of the tinned copper sleeve, so as to determine the wire quantity to be crimped and the filling wire; performing paint removal treatment on the wire end part to be cold-pressing connected, and the filling wire should be subjected to the paint removal treatment; and cold-pressing the wire by using a cold-pressing tool. The method replaces the existing traditional welding connection mode, the whole operation process is simple, different specifications of the high-voltage outgoing lines and the tap switches of the transformer can be quickly connected, the unique filling mode can ensure the tensile strength and the current-carrying performance of the wire, improves the wiring quality, and greatly improves the production efficiency.

The utility model discloses tinned copper wire high-speed stranding equipment, and belongs to the technical field of tinned copper wire stranding equipment. The U-shaped mounting seat is arranged on the base, and a wire stranding wheel is rotationally connected to the U-shaped mounting seat; according to the utility model, the nut moves on the surface of the lead screw through the rotation of the lead screw, the sliding block is driven to move through the movement of the nut, the U-shaped mounting seat and the stranding wheel are driven to move through the movement of the sliding block, and the stranding wheel is driven to move through the movement of the sliding block. The moving direction of the nut is controlled by controlling the positive and negative rotation of the second motor, so that the wire stranding wheel is driven to move left and right, the tinned copper wire can be uniformly wound on the wire stranding wheel through the left and right movement of the wire stranding wheel, and the wire stranding stability and efficiency are optimized.

The utility model relates to the technical field of cables, and discloses a high-strength copper-core silver-plated special high-temperature cable, which comprises a conductor and further comprises a conductor shielding layer arranged on the outer side of the conductor, an insulating layer arranged on the outer side of the conductor shielding layer, and an insulating shielding layer arranged on the outer side of the insulating layer. The inner protection layer is arranged on the outer side of the insulation shielding layer, and an outer protection layer is arranged on the outer side of the inner protection layer; according to the utility model, fluoroplastic (such as PTFE and FEP) is used as the insulating layer, the long-term tolerable temperature can reach more than 200 DEG C, the chemical corrosion resistance is strong, the high-temperature resistance of the cable is improved, the high-temperature-resistant metal braid layer (such as tinned copper) is used as the outer layer to reinforce mechanical protection, the flexible silica gel is used as the inner layer to improve the bending resistance, and the service life of the cable is prolonged. Corrugated grooves are designed in the inner wall of the protective sleeve, so that the heat dissipation area can be increased; the heat conduction filling material boron nitride filling material is embedded in the protection sleeve so that internal heat conduction efficiency can be enhanced and heat radiation efficiency in the cable can be enhanced.

The invention relates to the technical field of wires and cables, in particular to a shielding type low-smoke halogen-free flame-retardant control cable and a preparation process, the shielding type low-smoke halogen-free flame-retardant control cable comprises a wire core unit group, a filling layer, a total shielding layer and a sheath layer from inside to outside in sequence, the wire core unit group comprises nine independent wire core units arranged according to '1 + 8' geometry, and each wire core unit is formed by twisting four insulating wire cores in pairs; each insulating wire core comprises a tinned soft copper conductor and a modified cross-linked polyolefin insulating layer, an aluminum-plastic composite belt sub-shielding layer is wrapped outside a wire core unit, the total shielding layer is an aluminum-plastic composite belt layer, a grounding wire core is embedded in the total shielding layer, and the sheath layer is a low-smoke halogen-free flame-retardant polyolefin layer. The control cable disclosed by the invention has the characteristics of low smoke, zero halogen, flame retardance, strong electromagnetic interference resistance and excellent mechanical property, the generation process is stable and controllable, and the control cable is suitable for industrial mass production and is suitable for industrial automation, precise instrument signal transmission and other scenes with strict requirements on environmental protection, safety and signal precision.

The utility model discloses a tinned thin plate film coating device, and relates to the technical field of film coating devices, in particular to a tinned thin plate film coating device which comprises a bottom plate, a supporting block is fixedly connected to the upper portion of the bottom plate, one end of the supporting block is rotationally connected with an unwinding disc, and a film disc supporting arm is fixedly connected to the middle of the bottom plate. According to the tin-plated thin plate film coating device, the cooling box and the guide rod are arranged in a matched mode, in the using process, in the winding control process of the second motor, a thin plate subjected to film coating can be supported by the guide rod, and the thin plate subjected to film coating can be suspended in the cooling box to be cooled; according to the thin plate film laminating device, the thin plate is cooled, so that damage caused by contact with the box body is avoided while the thin plate is shrunk, the thin plate subjected to film laminating can be cooled, the thin plate is shrunk and tightly attached, and the purpose of improving the thin plate film laminating quality is achieved.

The application provides a kind of tinned plate detection device, belongs to plate detection technical field, including detection frame and plate feeding and spreading component, the plate feeding and spreading component is two groups, symmetrically installed in the middle of the inner side wall of detection frame, the top of the inner side wall of the discharge end of detection frame is installed with a detection mechanism.The application is raised by roller pressing mechanism and primary detection mechanism, then the plate is worn between two plate feeding and spreading components, so as to clamp and transport the side edge of plate by plate feeding and spreading component, so that it can automatically cross detection device to complete feeding, reduce the dependence on manual, simplify the operation mode, improve the detection efficiency, and when plate feeding and spreading component is separated from plate at the end of conveying, transverse tension can be applied to both sides of plate by plate feeding and spreading component, to offset the edge wave, middle wave and buckling of plate caused by stress, to ensure the accuracy of surface flatness and thickness data collection.

The utility model discloses a kind of pin tinning devices of H-shaped inductor, to provide a kind of can be to small H-shaped inductor clamping tinning pin tinning device of H-shaped inductor. It includes: workbench, soldering pool and tinning pool are installed on workbench;Blanking assembly, blanking assembly is installed on workbench, blanking assembly with soldering pool and tinning pool correspond, detection assembly is equipped on blanking assembly;Transfer assembly, transfer assembly is installed on workbench and is placed above tinning pool;Corner assembly, corner assembly is installed on transfer assembly;Pick-and-place assembly, pick-and-place assembly is installed on corner assembly and corresponds with blanking assembly.The beneficial effects of the utility model are: can be to small H-shaped inductor clamping tinning, can guarantee inductance to arrange blanking, can realize horizontal movement, can adjust the angle of pick-and-place assembly, can take inductance, can guarantee the effect of tinning, can improve the precision of blanking.

The invention relates to the technical field of tin plating processes, and mainly discloses an intelligent copper tin plating production line which comprises a base frame, a tin plating device and a tin plating device. The first reaction line and the second reaction line are coaxially arranged, and the first reaction line and the second reaction line are fixed in the sealed box body; wherein the first reaction line and the second reaction line are each provided with a travelling crane set, the travelling crane sets are fixed to the mounting base, and the problems that standby guarantee of an existing production line is insufficient, shutdown replacement is needed when a process tank breaks down, and production continuity is poor are solved.

The utility model relates to the technical field of defect detection, in particular to a tinned copper wire surface defect detection device which comprises a supporting seat, a control box, a detection box, four mounting seats, a wire guide wheel, a controller and an industrial display screen, the control box is fixedly connected to the supporting seat, the detection box is fixedly connected to the upper portion of the supporting seat, and the four mounting seats are fixedly connected to the detection box. A wire guide wheel is rotatably arranged on the mounting seat, a controller is mounted on the detection box, an industrial display screen is mounted on the controller, and the controller is electrically connected with the industrial display screen. The tinned copper wire extrudes the arc-shaped clamping plate to move outwards, meanwhile, the arc-shaped clamping plate drives the threaded rod and the two guide rods on the arc-shaped clamping plate to move outwards, and the elastic piece is compressed and rapidly rebounds, so that the elastic piece drives the threaded rod, the two guide rods and the arc-shaped clamping plate to move inwards, and the tinned copper wire is limited and fixed; therefore, the tinned copper wire can be prevented from being broken due to uneven tension, and the quality of the tinned copper wire is prevented from being affected.

The utility model provides equipment for improving the surface wettability of a tin plate, which comprises a shell, the shell is inverted T-shaped, a conveyor belt is horizontally erected at the lower part of the shell, the conveyor belt has conductivity and is grounded, a discharge unit is arranged at the upper part of the shell, the discharge unit comprises a cover shell, and the cover shell is arranged on the lower part of the shell. The cover shell is located above the conveying belt, a plurality of ceramic tubes are horizontally arranged on the lower portion of the cover shell side by side, and discharge electrodes are arranged on the side walls of the ceramic tubes. The utility model provides novel equipment for improving the surface wettability of the tin-plated plate, and is beneficial to reducing the energy consumption and improving the product quality.

This invention provides a method and related equipment for testing the wetting strength of tin-plated board surfaces. The method includes: acquiring a tin-plated board to be tested; drawing lines on the tin-plated board using a dyne pen to obtain the drawn lines; determining the changes in the drawn lines; for cases where capillary action occurs in the drawn lines, drawing lines again on the tin-plated board using a higher-grade dyne pen to obtain new drawn lines, until the new drawn lines show no change; and determining the grade of the dyne pen corresponding to the new drawn lines as the wetting strength of the tin-plated board surface. Thus, a quantifiable wettability index is provided. By testing the surface of the tin-plated board with a dyne pen, considering the surface morphology of the substrate, the relationship between the passivation film and the coating, and observing the pen marks, an evaluable method for testing the wetting strength of tin-plated board surfaces is established.

The utility model discloses a multi-layer shielding automobile high-speed transmission Ethernet cable comprising two core wires and a metal drainage wire, and the core wires and the metal drainage wire are sequentially coated with a tinned copper wire braid layer, a double-layer nanometer composite shielding layer and an irradiation crosslinking polyolefin sheath. And the double-layer nano composite shielding layer comprises a high-conductivity nano material inner layer and a high-permeability nano material outer layer. The multi-layer shielding automobile high-speed transmission Ethernet cable provided by the utility model has the advantages of high transmission efficiency, high reliability, strong durability and the like.

This invention belongs to the technical field of carbon fiber cable cores, specifically disclosing a fire-resistant carbon fiber composite cable core and its preparation method. The preparation method includes the following steps: S1, preparing carbon fiber microrods with a diameter of 0.5~1.5mm; S2, preparing an interface functional layer: plasma treatment, followed by sequential coating to form an elastic reset layer and impregnation coating to form a microparticle friction layer; S3, bundling 19~61 carbon fiber microrods in parallel; S4, stranding a composite load-bearing core with tin-plated copper wire; S5, preparing a fire-resistant isolation layer and an insulating protective layer: wrapping with mica tape and fiberglass tape to form a fire-resistant isolation layer, then extruding a low-smoke halogen-free flame-retardant material after heating and melting it to form an insulating protective layer. This invention, using the above-mentioned fire-resistant carbon fiber composite cable core and its preparation method, improves the electrical integrity and resistance to fretting wear of the cable core under high temperature and fire conditions, while also improving the stability of mass production.

This invention discloses a highly flexible, crush-resistant charging cable for new energy electric vehicles. It comprises, from the inside out, a cable core unit, an elastic buffer layer, a crush-resistant layer, a shielding layer, and an outer protective layer. The surface of the outer protective layer has a diamond-shaped anti-slip pattern. The crush-resistant layer is woven from tin-plated copper wire, aramid fiber, and carbon fiber, and has multiple stress-bearing and non-stress-bearing zones. The braiding density of the stress-bearing zones is greater than that of the non-stress-bearing zones. The elastic buffer layer contains multiple elastic rings and multiple honeycomb holes. The manufacturing process of the highly flexible, crush-resistant charging cable for new energy electric vehicles includes the following steps: S1, cable core unit preparation; S2, elastic buffer layer extrusion; S3, crush-resistant layer installation; S4, shielding layer preparation; S5, outer protective layer extrusion. This invention not only improves the crush resistance effect but also has the advantages of good overall cable flexibility, long service life, high stability, high safety, and high manufacturing yield.