3807 results about "Copper wire" patented technology

The invention provides a low-voltage cable, and relates to the technical field of cables, the low-voltage cable comprises a conductor layer, a support layer, a shielding layer and a sheath layer, the conductor layer is composed of multiple strands of fractal stranded conductors, and each fractal stranded conductor comprises an inner-layer superfine silver-plated copper wire, a middle-layer copper-clad aluminum wire and an outer-layer nickel-plated copper alloy wire; the supporting layer wraps the conductor layer and comprises an inner supporting layer, a dynamic framework layer and an outer restraint layer, the inner supporting layer is an obliquely wound aramid fiber woven belt, the dynamic framework layer is formed by alternately arranging shape memory polymers and carbon fiber composite belts, and the outer restraint layer is a spirally wound silica gel-glass fiber composite rope. The shielding layer comprises a tinned copper wire woven mesh; the sheath layer is a thermoplastic polyurethane matrix, a microcapsule self-repairing agent is dispersed in the thermoplastic polyurethane matrix, a microcapsule comprises a siloxane prepolymer, and the thermoplastic polyurethane matrix further comprises graphene nanosheets. Through collaborative design of the fractal stranded conductor layer, the dynamic skeleton support layer, the shielding layer and the self-repairing sheath, comprehensive improvement of cable performance is realized.

The invention relates to the technical field of silica gel cables, and discloses a silica gel cable with high reliability and high flexibility and a process thereof, and the silica gel cable comprises a conductor layer which is formed by hierarchically twisting a plurality of tinned copper wires with the diameter of 0.05-0.10 mm, and the twisting helical angle gradually changes from 25 degrees in the inner layer to 55 degrees in the outer layer; the insulating layer coats the conductor layer and comprises a silica gel material, a hydrogen-containing silicone oil cross-linking agent and a plasticizer, microcapsules with the particle size of 20-50 microns are dispersed in the silica gel material, a shell layer of each microcapsule is polyurethane, and a core layer of each microcapsule is a siloxane repairing agent containing a platinum catalyst; and a sheath layer. A hydrogen-containing silicone oil cross-linking agent in the insulating layer enables molecular chains to be cross-linked to form a net structure, the physical and chemical stability is enhanced, microcapsules are matched to endow a self-repairing function, a repairing agent is released when the cable is damaged, the self-repairing performance of the insulating layer is further guaranteed, damage is filled through a cross-linking reaction, insulation is recovered, the reliability of the cable is remarkably improved, and the service life of the cable is remarkably prolonged.

The invention discloses a multi-layer protection cable resistant to an extreme environment, and belongs to the technical field of cables. The cable is of a seven-layer composite structure design and sequentially comprises a conductor, an insulating layer, a shielding layer, a buffer layer, a waterproof layer, a heat insulation layer and a protective outer layer from inside to outside, and the conductor is made of high-purity oxygen-free copper; the insulating layer is made of a polyimide material and has high temperature resistance, low temperature resistance and excellent insulating property; the shielding layer is composed of a tinned copper wire woven mesh and a high-permeability permalloy foil, and electromagnetic interference is effectively shielded; the buffer layer is made of an elastic rubber material to relieve mechanical stress; the waterproof layer adopts a nanoscale fluorosilicone resin coating and has excellent waterproof performance; the heat insulation layer is made of ceramic fibers and aerogel, and efficient heat insulation is provided; and the protective outer layer is made of a high-strength and corrosion-resistant polyether-ether-ketone (PEEK) material. The cable has excellent high temperature resistance, low temperature resistance, corrosion resistance and electromagnetic interference resistance, is suitable for extreme environments, and ensures stable transmission of electric power and signals under extreme conditions.

The invention discloses an intelligent bonding copper wire equipment control method and system based on the Internet of Things, and relates to the technical field of semiconductor manufacturing. An intelligent bonding copper wire equipment control system based on the Internet of Things comprises copper wire bonding equipment, an edge computing gateway, a cloud platform and a communication module. According to the invention, a three-level cooperative intelligent control system combining real-time control of an equipment end, intelligent prediction of an edge layer and dynamic adjustment of parameters, and long-term optimization of a cloud end and remote intervention of experts is innovatively constructed, and a hierarchical uploading and distributed cooperative control strategy of real-time data and historical data is combined; data integrity, real-time performance, intelligence and system expandability are effectively considered, and an intelligent copper wire bonding control overall solution for complex scenes is formed.

The invention provides a copper-steel composite heat pipe and a preparation method thereof, and relates to the technical field of heat pipes, the copper-steel composite heat pipe comprises a steel-copper composite pipe, and the steel-copper composite pipe is composed of a copper inner pipe and a steel outer pipe. An internal copper structure is arranged in the steel-copper composite pipe; the internal copper structure is copper powder or a copper wire mesh. The copper powder is unilateral copper powder or bilateral copper powder or ring copper powder; the copper wire mesh is a copper mesh, or a copper mesh and a copper wire capillary, or a copper wire capillary. The steel outer pipe is made of steel 316L, and the copper inner pipe is made of copper C1020. The copper-steel combined material is used, the cost is saved, and it is guaranteed that materials are saved in the whole heat dissipation field. The double-layer combination of the copper inner pipe (C1020, high heat conduction) and the steel outer pipe (316L, corrosion resistance and high strength) is adopted, the efficient heat conduction of copper is utilized, and the environment erosion resistance and mechanical impact resistance of steel are utilized, so that the heat pipe is adaptive to complex working conditions (such as industrial high-temperature, humid or corrosion risk scenes), and the service life of the heat pipe is prolonged.

The invention discloses a continuous straightening device for copper wire production, which comprises a first connecting box, a second connecting box is fixedly mounted at one end of the first connecting box on the upper surface of the first connecting box, and a traction rolling mechanism can perform 360-degree rolling straightening on the outer surface of a drawn copper wire. A plurality of n-shaped frames are fixedly installed on the upper surface of a connecting box of the continuous straightening mechanism and the traction rolling mechanism, and the continuous straightening mechanism is installed in the n-shaped frames in a transmission mode, so that the continuous straightening mechanism can pull continuously produced copper wires into the traction rolling mechanism, and the traction rolling mechanism is fixedly installed on a second connecting design. In the copper wire straightening process, the continuous straightening mechanism accurately straightens the straightness of the copper wire through the multi-angle pressure synergistic effect, deformation such as bending and twisting is eliminated, and preliminary straightening is completed; and then, the mechanism conducts 360-degree rolling on the outer surface of the copper wire, secondary fine correction is conducted, and finally the high-precision and high-quality straightened copper wire is produced.

The invention discloses a temperature and pressure sensor and a manufacturing method thereof, the temperature and pressure sensor comprises a support assembly formed by an inner support and a thermistor through an injection molding process, two pin copper wires of the thermistor are welded to an insertion piece of the inner support, and a plastic supporting structure wrapping the thermistor and the inner support is formed through injection molding; one end of a PIN needle of the terminal button is connected with an external plugging port; one end of a conductive circuit of the flexible wire board is respectively welded with the PIN of the ceramic capacitor and the insertion piece of the inner bracket, and the other end of the conductive circuit of the flexible wire board is welded with the other end of the PIN of the terminal button; a through hole is formed between the support assembly and the shell, a medium makes contact with the ceramic capacitor through the through hole, the ceramic capacitor transmits a pressure signal to the outside through the flexible wire board and the end button, the thermistor senses the temperature of the medium through the plastic supporting structure, and a temperature signal is transmitted to the outside through the inserting piece, the flexible wire board and the end button. The thermistor is effectively prevented from losing efficacy due to medium impact, and meanwhile, the structural process is relatively simple and easy to assemble.

The invention relates to the technical field of electric wires and cables, and discloses an ultrahigh-conductivity electric wire and cable and a preparation method thereof. A graphene enhancement layer; a nano composite insulating material layer; an inner semi-conductive layer; a conductive copper strip shielding layer; a silver-plated copper wire woven mesh shielding layer; an intelligent monitoring and protection sheath; the method comprises the following steps: step S01, preparing a superconducting core wire strand; step S02, preparing a nano composite insulating material layer; s03, preparing a shielding layer; step S04, intelligent monitoring and protection sheath preparation; the superconducting core wire strand formed by twisting a plurality of YBCO superconducting material filaments forms a stable structure with excellent conductivity under the precise control of twisting process parameters, so that the resistance is effectively reduced, the loss in the electric energy transmission process is reduced, the electric energy transmission efficiency is improved, high-density current can be borne for stable transmission, and the service life of the cable is prolonged. And the requirement of the modern electrical engineering field on high conductivity of wires and cables is met.

The invention discloses an intelligent bonding copper wire processing control method and system supported by big data and Internet of Things, and the method comprises the steps: collecting multi-source data in a bonding copper wire processing process in real time through Internet of Things terminal equipment, and uploading the multi-source data to a cloud big data platform, performing quality evaluation on the processing procedure based on a preset processing quality evaluation model to generate a processing state evaluation result; if the abnormal probability of any working procedure in the processing state evaluation result exceeds a preset threshold value, calling an optimized path of the corresponding working procedure in a historical database, and generating a dynamic adjustment parameter based on a transfer learning algorithm; and the processing equipment is optimized based on the dynamic adjustment parameters, and optimization data is fed back to the cloud in real time to form closed-loop control. The bonding copper wire processing process is intelligently monitored and adjusted through a technical chain of real-time sensing of the Internet of Things, cooperative control of dynamic parameters and closed-loop self-learning, and the problems of large fluctuation of quality stability and lagging of abnormal response caused by strong manual dependence are solved.

The invention discloses an electric wire and cable copper wire stranding machine, and belongs to the technical field of copper wire stranding, the electric wire and cable copper wire stranding machine comprises a rack, a winding mechanism used for winding a stranded copper wire is assembled on the rack, a material rack unit is assembled on one side, far away from the winding mechanism, of the rack, the material rack unit comprises a shaft rod installed in a first bearing seat, and an installation disc is assembled on the shaft rod; a material frame is inserted into the mounting disc by forming an inserting groove, and a driving piece is assembled at one end of the shaft rod; through the arrangement of the anti-loosening unit and the stranded wire guide frame, the rotating pay-off barrel drives the extending frame through the moving unit to push the rolling shaft to be attached to a copper wire in real time in the stranding process, so that no matter what degree the pay-off is achieved, the rolling shaft can always apply tension to the wire outlet end of the copper wire, the copper wire is kept in tension, and the copper wire is prevented from being loosened. The stranding machine is simple in structure and convenient to use, the loosening condition along with the increase of the paying-off time is avoided, the loosening condition of the stranded wire is avoided, the quality of the stranded wire is ensured, and the risk of increasing the fault of the stranding machine is avoided.

The utility model belongs to the technical field of electromagnet coils, particularly relates to a magnetic suspension electromagnet coil, and aims to solve the problems that a coil with a large number of turns can generate a strong magnetic field under the same current, so that the coil with a large number of turns can be adopted to generate a strong and stable magnetic field, but the large number of turns can cause some problems. In order to solve the problems that the energy loss is further increased and even the coil is possibly damaged due to the fact that the resistance of the coil is increased and heating is increased, the utility model provides the following scheme: the coil comprises a hollow framework, a plurality of turns of coils are wound on the hollow framework, and a protective sleeve is wound on the whole outer wall of the plurality of turns of coils; and the outer wall of a single copper wire of the multi-turn coil is covered and sprayed with an insulating layer. When the magnetic suspension electromagnet coil is used, through the design of the protective sleeve, the ceramic insulating coating, the heat dissipation fins, the heat extraction fan, the heat dissipation holes and the like which are made of polyimide film materials, the heat dissipation efficiency and durability of the coil are effectively improved, and stable operation of a magnetic suspension electromagnet is ensured.

The invention discloses a corrosion-resistant insulating aerial cable which sequentially comprises a conductor layer, an insulating layer, a shielding layer, a corrosion-resistant layer and an outer sheath from inside to outside. The conductor layer is an aluminum alloy stranded wire of which the surface is coated with an anti-oxidation coating; the insulating layer is made of crosslinked polyethylene doped with 3-5% of nano silicon dioxide; the corrosion-resistant layer is a fluoroplastic or polyurethane coating; and the outer sheath is polyvinyl chloride added with an antioxidant and an ultraviolet light absorber. The fluoroplastic coating is formed through electrostatic spraying, and the surface of the copper wire shielding layer is subjected to phosphating pretreatment; the doped nano material enhances the mechanical strength and ultraviolet resistance of the insulating layer; the spiral groove design accelerates drainage and reduces accumulated water corrosion.

The invention relates to the technical field of metal wire processing, discloses copper alloy fine wire drawing equipment, and solves the problems that in the multi-stage drawing process of copper wire drawing equipment, due to the fact that the initial diameter of a raw material copper wire is uneven and the variation of unit length increase is unstable due to wire diameter fluctuation in the drawing process, the tension of the copper wire on a guide wheel is frequently changed, and the drawing quality is influenced. Therefore, the tension thread breaking phenomenon is easily caused. The first deformation structure is located between the outer guide wheel and the assembly disc, in the copper wire drawing process, adaptive deformation can be generated according to wire diameter changes, the outer guide wheel is pushed through reverse elastic force of the elastic recovery trend of the first deformation structure, and the fluctuation variation of increase of the unit length of the copper wire is self-adapted.

The invention discloses a high-temperature-resistant insulated copper wire and a preparation method thereof, and belongs to the technical field of enameled insulated copper wires. The high-temperature-resistant insulated copper wire comprises a copper wire body (1) and a polysilazane mixed filler layer (2), and the polysilazane mixed filler layer (2) wraps the surface of the copper wire body (1) and is formed by mixing polysilazane and inorganic filler. According to the preparation method of the high-temperature-resistant insulated copper wire, firstly, polysilazane and inorganic filler are mixed, the surface of the copper wire body is coated with the mixed polysilazane and inorganic filler, and the organic-inorganic combined coated insulated copper wire has the advantages of being resistant to high temperature and high pressure, high in hardness and quality and uniform in coating and has high stability and reliability.

The utility model discloses a stator wire pressing device, which comprises a workbench and a wire body, the wire body is provided with a plurality of trays moving along the wire body, the upper side surface of each tray is provided with a wire plugging tool, the workbench is internally provided with two groups of jacking assemblies, the two groups of jacking assemblies are linearly arranged along the wire body and are positioned below the wire body, and the wire plugging tool is positioned below the wire body. The jacking assembly and the tray are located in the same vertical plane, a wire holding assembly used for fixing the end of a stator copper wire is arranged on the upper side face of the workbench, a wire pressing assembly used for pressing the stator copper wire downwards is arranged on one side of the wire holding assembly, and the wire pressing assembly is located on the upper side face of the workbench. The copper wire inserting tool has the advantages of limiting the pre-inserted copper wire and the wire inserting tool and preventing the copper wire from deviating.

The invention discloses a corrosion-resistant medium-voltage power cable, which relates to the technical field of cables and comprises a cable core, a shielding layer, a fireproof layer, an armor layer and an outer sheath layer which are sequentially arranged from inside to outside. The cable core is composed of a plurality of insulated wire cores which are mutually twisted. Each insulated wire core is composed of copper wires which are mutually twisted and insulating layers which are sequentially wrapped outside the copper wires which are mutually twisted. A filling material is filled between the cable core and the shielding layer; according to the corrosion-resistant medium-voltage power cable disclosed by the invention, through a synergistic effect of a multi-layer composite structure design and a special modified material, excellent comprehensive performance is realized, and the corrosion-resistant medium-voltage power cable has excellent conductivity, electrical insulativity and mechanical strength and also shows outstanding corrosion resistance, weather resistance, flame retardance and waterproofness; the cable is especially suitable for ocean, underground, chemical plants and other application scenes with strong corrosivity and severe environmental conditions, and can maintain long-term stable operation in extreme environments.

The invention relates to the technical field of cable manufacturing, in particular to a low-temperature-resistant torsion wind energy shielding flexible cable and a manufacturing method. The cable comprises a conductor layer, an insulating layer, a shielding layer and a sheath layer which are sequentially arranged from inside to outside, the conductor layer is composed of a plurality of layers of coaxially-sleeved twisted bodies, the twisted bodies are formed by twisting copper wires with composite plating layers on the surfaces, the twisting directions of the adjacent layers are opposite, and the twisting pitches are increased layer by layer from inside to outside; discrete gaps formed by twisting are uniformly filled with elastic microspheres with core-shell structures, shells of the elastic microspheres are made of rubber base materials containing carbon nanotubes, inner cavities of the elastic microspheres are filled with lubricants, the elastic microspheres are broken under pressure to release lubrication, and the elastic microspheres can be subjected to self-fitting circulating grease supply after the pressure is relieved. By designing a multi-layer stranded structure, a lubricating system and an elastic buffering mechanism, the reliability of the wind power cable under dynamic load and low-temperature stress is improved, the service life of the wind power cable under dynamic load and low-temperature stress is prolonged, and the wind power cable is suitable for high-latitude, high-altitude and other extreme-low-temperature wind power scenes.

The present invention relates to a winding mechanism for inductor production, comprising a processing table, a carrier table, a guide module, a winding module, and copper wire; the carrier table is fixedly connected to the processing table, and workstations 1 and 2 are reserved above the carrier table; the guide module is arranged in workstation 1 of the carrier table, and the winding module is arranged in workstation 2 of the carrier table, and the copper wire passes through the guide module and is coiled on the winding module; a U-shaped block is installed on the processing table, and a pair of cutting tools are arranged in the block for telescopic movement by means of a threaded rod and a threaded sleeve. This inductor production winding mechanism uses a telescopic cylinder to link the movable sleeve to flip, and adjusts the curvature of the copper wire between the conveyor belt and the winding column in real time, avoiding the problem of excessive curvature caused by wire accumulation, ensuring winding uniformity and copper wire tension stability, and preventing deformation or damage to the copper wire.

The utility model discloses a multilayer composite enameled wire and a painting device thereof, the multilayer composite enameled wire comprises a copper wire core (1), the surface of the copper wire core (1) is provided with a primer layer (2), a middle layer (3) and a finishing coat layer (4) from inside to outside in sequence, the primer layer (2) is formed by compounding 12-14 high-toughness polyurethane layers with the same thickness, the thickness of the primer layer (2) is 12-28 microns, and the thickness of the finishing coat layer (4) is 12-28 microns. The middle layer (3) is formed by compounding 8-10 thermosetting resin layers with the same thickness, the thickness of the middle layer (3) is 8-20 microns, the finish paint layer (4) is formed by compounding 4-6 epoxy resin layers with the same thickness, and the thickness of the finish paint layer (4) is 4-12 microns; and the high-toughness polyurethane layer, the thermosetting resin layer and the epoxy resin layer are formed by independently baking. According to the utility model, the insulating property of the enameled wire can be improved, and the painting effect of the enameled wire is improved while the painting cost of the enameled wire is reduced.

The invention discloses a stator and rotor punching sheet and magnetic steel for a concentrated winding type frameless torque motor, and belongs to the technical field of concentrated winding type motors, the stator and rotor punching sheet comprises a rotor punching sheet, a stator punching sheet and magnetic steel, and the center of the rotor punching sheet is provided with a rotor iron core; the stator punching sheet is composed of yoke parts and tooth parts, the tooth parts are trapezoidal teeth, the tooth parts and the stator grooves are distributed at equal angles, the tooth parts and the stator grooves are alternately arranged, and the stator grooves are straight grooves; the inner side of the stator punching sheet is also provided with a rotor punching sheet and magnetic steel, the rotor punching sheet and the magnetic steel form a motor rotor, and the motor rotor is a surface-mounted rotor. According to the stator and rotor punching sheet and the magnetic steel for the concentrated winding type frameless torque motor, the winding grooves of the stator iron core are flat-bottom straight grooves, the flat copper wires are wound in the winding grooves, the flat wire coils are fixed to the tooth portions through glue, integral potting is carried out after fixing is completed, and compared with a traditional pear-shaped groove for containing round wire windings, the stator and rotor punching sheet is simple and firm in structure, high in groove fullness rate, high in motor efficiency and improved in stability.

The invention relates to the technical field of special cables, in particular to an anti-electromagnetic interference double-shielding signal cable for precise instruments, which comprises conductor units, insulating layers, wire pair shielding layers, a filling buffer layer, a self-adaptive conductive layer, an inner main shielding layer, a bonding layer, an outer main shielding layer and a sheath layer, through combination of the graphene composite conductor and the low-dielectric insulating layer, 10GHz signal attenuation is smaller than or equal to 0.5 dB / m, signal transmission errors are greatly reduced, through cooperation of the 3D braided shielding layer and the filling buffer structure, the bending fatigue life of the signal cable is larger than or equal to 200,000 times, through self-repairing design of the liquid metal microcapsules, the shielding effectiveness of a damaged part is recovered, and the service life of the signal cable is prolonged. Protrusions are arranged on the inner layer, form mechanical occlusion with a microscopic rough surface of a copper foil composite layer on the inner main shielding layer, and are matched with a plurality of pits in the surface of the outer layer to form point-surface composite contact with a 3D woven silver-plated copper wire layer of the outer main shielding layer, so that the peel strength of the inner main shielding layer and the outer main shielding layer is greatly improved.

The invention relates to the technical field of photoelectric composite cables, in particular to a cold-resistant tensile photoelectric composite cable and a rapid laying method thereof, and the cable comprises a conductor part, an insulating layer, an optical fiber unit, a filling layer and an outer sheath which are coaxially arranged from inside to outside and are sequentially wrapped. The conductor part is formed by twisting a plurality of strands of copper wires, a carbon fiber reinforced core is arranged in the conductor part, and the insulating layer is made of EAA and PEBA blending modified materials and contains nano boron nitride particles; the optical fiber unit is of a PBT loose tube structure, a plurality of single-mode optical fibers and special ointment are arranged in the PBT loose tube structure, micro-nano protrusions are arranged on the inner wall of a loose tube, and the surface of each micro-nano protrusion is covered with a silicon dioxide antireflection film. The cable integrates the functions of cold resistance, stretch resistance, electric conduction, insulation, communication, heat dissipation and protection. The insulating layer adopts EAA and PEBA blending modified materials to be combined with nano boron nitride particles, so that the cold resistance and the insulativity are improved; and the polyurethane elastomer of the filling layer is compounded with the glass beads, so that the structural stability and the comprehensive performance are enhanced.

The invention discloses an auxiliary coil winding device for generator production, and relates to the technical field of generator machining, the auxiliary coil winding device comprises a workbench and a reciprocating assembly, a gear motor is arranged in the center of the bottom of the workbench, an output shaft of the gear motor is connected with an adjusting seat, and the top of the adjusting seat is rotatably connected with a rotating seat; the reciprocating assembly is arranged in the middle of the top face of the adjusting seat and comprises a butt joint sleeve, a lifting sleeve is fixed to the bottom of the butt joint sleeve, a limiting rod is slidably connected into the lifting sleeve and fixedly connected with the adjusting seat, and a reset spring is arranged on the outer side of the limiting rod in a sleeving mode. The winding head is in lifting linkage with the sliding column and the driving groove to control the rotating base to rotate in a reciprocating mode, the winding position is automatically switched, the reset spring achieves rapid resetting of the mechanism, the design achieves bidirectional reciprocating winding of copper wires, the collision risk of wire pipes is avoided, and a single driving source completes the function of a traditional double-shaft system.

The invention relates to the field of drag chain cables, in particular to a high-flexibility shielding type drag chain cable and a preparation method thereof. The drag chain cable sequentially comprises a conductor layer, a shielding layer and a sheath layer from inside to outside. The conductor layer is formed by compositely twisting silver-plated copper wires and carbon fibers; the shielding layer comprises an inner shielding layer and an outer shielding layer, the inner shielding layer is wrapped by an aluminum-plastic composite belt, and the outer shielding layer is a tinned copper wire woven mesh. The sheath layer comprises the following components: a modified polyurethane elastomer, an ethylene-vinyl acetate copolymer, nitrile rubber, a composite flame retardant, a plasticizer, an antioxidant, a light stabilizer and a lubricant. Through the structural design of the conductor layer, the shielding layer and the sheath layer and the optimization of the material formula of the sheath layer, the problems that an existing drag chain cable is insufficient in strength and flexibility, limited in shielding effectiveness, poor in wear resistance and weather resistance and difficult to consider both flame retardance and mechanical property are solved.

The invention provides a graphene composite copper wire and a preparation method thereof.The preparation method of the graphene composite copper wire comprises the steps that 1, a copper base material is provided; 2, the outer surface of the copper base material is coated with graphene dispersion liquid; 3, plating copper on the outer surface of the copper wire by using an electroplating method; 4, the step 2 and the step 3 are repeated for n times, and the graphene composite copper wire is obtained; the graphene composite copper wire comprises a copper base material and a plurality of composite layers wrapping the outer surface of the copper base material, and each composite layer comprises a graphene layer and a copper layer which are sequentially arranged from inside to outside in the radial direction of the copper wire. According to the graphene composite copper wire, the copper base material is treated through the electroplating method, the multiple composite layers formed by combining the copper and the graphene are formed on the surface of the copper base material, and the graphene composite copper wire is finally obtained, so that the conductivity of the copper can be improved, the technological process is simple, too many complicated steps are not needed, the preparation condition is simple, and the cost is low.

The invention discloses a high-performance ship cable and a preparation process thereof, relates to the technical field of cables, and aims to solve the problem that an existing cable is insufficient in environmental adaptability, safety, electromagnetic compatibility and the like, the cable comprises a conductor, an insulating layer, a longitudinal waterproof structure, a shielding layer and a sheath layer from inside to outside, the conductor is of a multi-strand soft copper wire stranded structure, and the copper content of the multi-strand soft copper wire stranded structure is larger than or equal to 99.95%; the DC resistance at 20 DEG C is less than or equal to 0.01724 omega mm / m; the insulating layer is made of cross-linked polyethylene or polytetrafluoroethylene and can resist 1.5 times of rated voltage for 1 minute without breakdown; the longitudinal waterproof structure comprises a water-blocking tape and water-blocking paste; the shielding layer is of a double-layer structure, and the shielding effectiveness is larger than or equal to 60 dB The sheath layer is made of a low-smoke halogen-free flame-retardant material and contains an antioxidant and an ultraviolet light absorber, the preparation process comprises six steps of conductor preparation, insulating layer forming and the like, parameters are accurately controlled, the cable can work at the temperature of-40 DEG C to 85 DEG C, is salt-fog-resistant, waterproof and flame-retardant, is adaptive to the complex environment of ships and warships, and the operation reliability and safety are improved.

The utility model discloses a network cable sleeve capable of preventing signal interference, which comprises a sleeve body used for loading a network cable, the sleeve body comprises an inner insulating layer, a middle shielding layer and an outer protective layer from inside to outside, and the network cable sleeve also comprises a semicircular bulge integrally formed on the inner wall of the inner insulating layer, a placing cavity for placing a cable is formed in the semicircular bulge; the middle shielding layer is mainly composed of a main shielding layer, a conductive cloth layer and a woven mesh layer. According to the utility model, the inner wall of the inner insulating layer is provided with the annular equidistant semicircular projections and the independent placing cavities, so that classified storage and physical isolation of a plurality of network cables are realized, and sheath damage and core wire hidden dangers caused by collision and friction among the network cables are avoided; meanwhile, the middle shielding layer composed of the corrugated single-face conductive aluminum foil, the copper-graphene composite conductive cloth and the double-layer reverse spiral tinned copper wire net is matched, low-frequency, intermediate-frequency and high-frequency electromagnetic interference is blocked in a layered mode, full-band signal protection is formed, and stability and reliability of network cable data transmission are guaranteed.

The invention discloses an indoor flame-retardant insulated flexible wire and a preparation method thereof, belongs to the technical field of flexible wires, and is used for solving the technical problem that the insulating property and flame-retardant property of an indoor flexible wire in the prior art need to be further improved. The cable comprises a wire layer formed by twisting a plurality of copper wires, an insulating layer and an outer sheath layer, a modified aminating agent taking a siloxane chain segment as a main body is prepared, polyvinyl chloride is aminated and hybridized with a space chain segment of the polyvinyl chloride at the same time, after phosphorus-hydrogen addition and surface modification, the hybridized polyvinyl chloride is obtained, and through sodium hypophosphite and 1, 2, 4-trimethyl-1, 3-pentanediol, the flame retardant is added to the polyvinyl chloride, so that the cable is formed. The preparation method comprises the following steps: carrying out phosphorus-hydrogen addition on 2, 3-dihydroxystyrene to obtain a modified cross-linking agent, forming a spherical structure by the modified cross-linking agent and phosphonitrilic chloride trimer under triethylamine and ultrasonic conditions, carrying out surface modification to obtain flame-retardant microspheres, and carrying out melt extrusion on the modified cross-linking agent and phosphonitrilic chloride trimer as main materials and auxiliary materials of an outer sheath layer to finally prepare the flame-retardant insulated flexible wire.

The invention relates to the technical field of copper wire drawing, in particular to metal bus production and processing equipment which comprises a positioning groove, a half die device, a copper wire, a temporary eye die and a liquid feeding device, the two half eye dies are spliced to form a main position eye die, and the copper wire penetrates through a middle hole of the main position eye die to achieve wire drawing. Lubricating cooling liquid is sprayed to a center hole of the main position hole die at a fixed point through the annular spray head, so that new lubricating cooling liquid can be accurately supplemented to a liquid consumption position, meanwhile, old lubricating cooling liquid is squeezed away, the two half hole dies are separated, and the temporary hole die plays a temporary wire drawing function; the brush roll assembly arranged for each half-hole die is used for cleaning, after cleaning is completed, the two half-hole dies are automatically spliced and combined, subsequent copper wire drawing work continues to be carried out, temporary wire drawing is maintained by the temporary hole die, therefore, the problem of chippings is relatively ignored, and the temporary hole die can be cleaned after the whole wire drawing work is completely completed.

The invention discloses a wafer scribing process, which comprises the following steps of: amplifying the line width of a saw street dummy copper conductor and continuously filling to form a shearing buffer copper strip; performing double-pulse laser annealing on the shear buffer copper strip to generate a twin crystal softening layer; back infrared gradient preheating is carried out according to the thermoplastic transition temperature of the copper strip, the feeding rate and the rotating speed of a tool are corrected in combination with vibration data coupling, and a plastic initial saw kerf is obtained; layering progressive deep cutting is carried out according to multi-gear cutting depth data, so that the copper strip slides to absorb energy under the pulse load and is elastically reset through a low dielectric layer, and a full-depth saw kerf is formed; and performing constant-temperature crystal locking and gradient cooling in a nitrogen environment, so that the twin crystal structure of the copper strip is stable and is interlocked with the dielectric layer shrinkage hoop, and a flexible bridging unit is generated on the side wall of the saw kerf. According to the technical scheme, the interlaminar shear stress can be subjected to peak clipping and shunting at the cutting moment, selective layering of a multi-layer interconnection interface is inhibited, and the yield and long-term reliability of the ultrathin wafer are improved.