929 results about "Tinning" 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 a novel tin-plated copper-clad aluminum alloy wire coating process and a preparation method, and the novel tin-plated copper-clad aluminum alloy wire coating process comprises the following steps: rolling an aluminum alloy material into an aluminum alloy rod through a continuous casting and rolling process in a smelting process; removing an oxide layer on the surface of the aluminum alloy rod; the surface of the aluminum alloy rod with the surface oxide layer removed is coated with a copper strip; drawing and exhausting after coating the copper strip to form a copper-coated aluminum alloy wire blank; the copper-clad aluminum alloy wire blank is subjected to drawing, medium wire drawing, fine wire drawing and annealing treatment to form a copper-clad aluminum alloy wire; and the copper-clad aluminum alloy wire enters a tinning machine and is coated with a tinning layer on the surface to form the tinned copper-clad aluminum alloy wire. The core wire of the tin-plated copper-clad aluminum alloy wire is the copper-clad aluminum alloy wire, the outer layer of the copper-clad aluminum alloy wire is copper, the interior of the copper-clad aluminum alloy wire is made of a high-strength and high-conductivity aluminum alloy material, and the mechanical property and the electrical property of the tin-plated copper-clad aluminum alloy wire are superior to those of a copper-clad aluminum wire, a copper-clad aluminum alloy wire and an aluminum-magnesium wire which are used at present.

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 discloses an anti-deviation circuit board chip welding device and method, and relates to the field of chip welding, the anti-deviation circuit board chip welding device comprises a welding workbench, a welding robot is installed on the welding workbench, a welding positioning groove is formed in the welding workbench, a hot melting mechanism is arranged on the welding workbench, and the hot melting mechanism comprises a horizontal sliding seat, a vertical plate and a hot melting plate; the horizontal sliding seat is arranged on the welding workbench in a sliding mode, the sliding direction of the horizontal sliding seat is parallel to the welding positioning groove, the vertical plate is fixed to the horizontal sliding seat, the hot melting plate is arranged on the vertical plate in a sliding mode, a rectangular groove is formed in the middle of the hot melting plate in a penetrating mode, and a plurality of hot fuses are arranged on the two opposite inner walls of the rectangular groove at equal intervals in the horizontal direction; in the welding process, tin is plated on the chip welding holes of the circuit board through the welding robot, the thermal fuse is located between every two adjacent welding holes and used for enabling tin to be in a hot melting state, it is guaranteed that the chip cannot move in the welding process, the welding reject ratio is greatly reduced, and the welding quality is improved.

The invention relates to the technical field of power transmission and cable monitoring cables, in particular to an anti-interference optical fiber monitoring cross-linked cable and a forming and manufacturing method, and the cable sequentially comprises a cable core layer, a monitoring function layer, an electromagnetic shielding layer, an insulation protection layer and an outer protection layer from inside to outside; the monitoring function layer is tightly wound on the outer surface of the cable core layer in a spiral shape, the electromagnetic shielding layer is located between the monitoring function layer and the insulation protection layer, the electromagnetic shielding layer is of a multi-layer structure, the inner layer of the electromagnetic shielding layer is a permalloy belt, and the outer layer of the electromagnetic shielding layer is a tinned copper woven mesh. And a plurality of rat-proof and ant-proof composite layers are arranged on the outer side wall of the outer protective layer at intervals along the length direction of the outer protective layer. The monitoring function layer is spirally and tightly wound on the outer surface of the cable core layer, the design enables the optical fiber and the cable core layer to be tightly attached, it is ensured that the temperature change and mechanical deformation of the cable core layer can be rapidly transmitted to the optical fiber, and the problem of monitoring lag caused by gaps in a traditional loose tube structure is solved.

The utility model relates to an automatic tinning device for a motor stator, and belongs to the technical field of motor manufacturing equipment. Comprising a working table, a water storage disc, a lifting rotating mechanism and a tin furnace assembly, a bracket is arranged on the working table through the lifting rotating mechanism, the water storage disc is arranged on the working table on one side of the bracket, the tin furnace assembly is arranged on the working table on the other side of the bracket, the tin furnace assembly comprises a tin furnace body and a tin scraping piece, and the tin furnace body is clamped on the working table through a limiting block; and a tin scraping piece is arranged on the working table on one side of the tin furnace body. According to the automatic tin coating device for the motor stator, the manual labor amount is effectively reduced, the tin coating working efficiency is improved, meanwhile, it is guaranteed that the tin coating quality consistency is good, and the problems of uneven tin coating and insufficient soldering are avoided.

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 utility model discloses a wire arranging device for full-automatic continuous welding, which belongs to the technical field of automation and comprises a bottom plate, a wire harness feeding transmission device for feeding wire harnesses is mounted on the upper end face of the bottom plate, and a continuous wire arranging component for arranging the wire harnesses is mounted on the upper end face of the bottom plate; the wire harness transferring and pushing assembly is used for transferring wire harnesses on the wire harness feeding transmission device to the continuous wire arranging assembly, and the wire harness transferring and pushing assembly is further used for pushing the wire harnesses arranged on the continuous wire arranging assembly to the tinning station and the welding station; the continuous wire arranging assembly comprises a plurality of wire arranging assemblies and a second conveying belt assembly, the wire arranging assemblies are installed on the outer wall of a conveying belt of the second conveying belt assembly at equal intervals, a main body support of the second conveying belt assembly is fixedly connected with the upper end face of the bottom plate, and a motor is fixedly installed on the main body support of the second conveying belt assembly; by means of the mode, continuous feeding and discharging of the wire harnesses are achieved.

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 discloses a preparation method of a tinned copper core fluorinated ethylene propylene insulated cable for aerospace, and relates to the technical field of aerospace cable preparation methods. The preparation method comprises the following steps: S1, preparing a nickel-plated copper core; s2, preparing a heat insulation layer; s3, a composite insulating layer is prepared, the composite insulating layer is composed of a first insulating layer, a second insulating layer and a third insulating layer from inside to outside, the first insulating layer is a fluorinated ethylene propylene layer, the second insulating layer is a polyimide / fluorinated ethylene propylene composite layer, and the third insulating layer is a polyether-ether-ketone layer; s4, preparing a shielding layer; and S5, preparing a protective layer. The invention provides the preparation method of the tinned copper core fluorinated ethylene propylene insulated cable for aerospace, the insulated cable prepared by the preparation method has high performance and high reliability in an extreme aerospace environment, and all key requirements of electrical performance, radiation resistance, mechanical strength and wear resistance are comprehensively met.

The invention relates to the technical field of cables, and provides a low-voltage power cable which sequentially comprises a conductor, an insulating layer, a lining layer, an armor layer and a sheath layer from inside to outside. The armor layer is formed by winding two layers of parallel steel belts outside the cable lining layer in a spiral or longitudinal wrapping manner; the conductor is formed by twisting tinned copper wires; the sheath layer is a polyvinyl chloride resin sheath layer.

The invention relates to the technical field of cables, and provides a flexible cable for a robot, which comprises a cable core and a sheath layer wrapping the cable core, the cable core comprises signal lines and power lines. Each signal line sequentially comprises a conductor, a belting layer and a shielding layer from inside to outside; the shielding layer sequentially comprises a first shielding layer and a second shielding layer from inside to outside; the first shielding layer is a bare copper wire mesh layer; the second shielding layer is a tinned copper wire mesh layer; the belting layer is a glass fiber tape layer; the sheath layer comprises the following raw material components in parts by weight: 80-90 parts of polyvinyl chloride resin, 20-30 parts of a plasticizer, 2-4 parts of an anti-aging agent, 2-4 parts of a calcium-zinc stabilizer, 1-4 parts of a lubricant and 6-16 parts of a flame retardant; the plasticizer is prepared from dioctyl phthalate, polyethylene glycol adipate and p-methoxyacetophenone. According to the technical scheme, the problem of low elongation at break of the flexible cable for the robot in the prior art is solved.

The invention discloses a cable resistant to high temperature and acid corrosion, and the cable comprises a conductor layer which is formed by concentrically twisting a plurality of nickel-coated copper wires; the inner insulating layer coats the conductor layer and is used for improving the thermal conductivity of the cable; the outer insulating layer is sleeved on the inner insulating layer; the anti-bending buffer layer is coated outside the outer insulating layer; the electromagnetic shielding layer wraps the anti-bending buffer layer and is used for forming a shielding layer; the electromagnetic shielding layer is coated with the anti-corrosion functional layer, the anti-corrosion functional layer is a fluororubber belt, and benzotriazole corrosion inhibition microcapsules are embedded in a rubber layer of the fluororubber belt; and the mechanical strengthening layer is arranged outside the anti-corrosion functional layer in a sleeving manner. According to the invention, the conductor layer adopts the nickel-coated copper wire to improve the high-temperature-resistant conductivity, the corrosion inhibition microcapsules are embedded in the corrosion-resistant functional layer to realize long-acting corrosion resistance, the electromagnetic shielding layer is combined with graphene and the tinned copper strip to enhance the broadband shielding effectiveness, and the cable has long-acting corrosion resistance, mechanical property stability in a high-temperature environment and broadband electromagnetic shielding effectiveness.

The utility model discloses a double-layer insulating high-safety environment-friendly power cable, which relates to the technical field of environment-friendly power cables and comprises tinned copper wire conductors, a filling layer and an insulating layer body, the insulating layer body is arranged outside the tinned copper wire conductors, and the filling layer is filled in the insulating layer body. According to the double-layer insulation high-safety environment-friendly power cable, the insulation sleeve can separate the inner core and effectively support the inner core, good supporting and anti-pulling effects are achieved while insulation is achieved, a reserved groove is formed in the outer side of the insulation sleeve, space is provided for deformation of the insulation sleeve when the insulation sleeve is inserted, and the protection layer and the insulation sleeve are used in cooperation, so that the protection effect is good. According to the double-layer insulation high-safety environment-friendly power cable, the durability and the anti-deformation effect of the power cable are enhanced, so that the problems that the anti-extrusion effect is poor and the good insulation effect cannot be achieved due to the fact that the insulating layer on the outer side of the cable mostly adopts a direct sleeving mode to protect the internal wires are solved.

The utility model discloses an automatic bending and tin dipping device based on electromagnetic coil pins, which comprises a loading turntable structure provided with a controllable rotary turntable surface and a plurality of groups of electromagnetic coil stations; the loading and unloading carrying structure is arranged corresponding to the loading turntable structure; the pin bending structure is used for outputting stamping kinetic energy to bend electromagnetic coil pins; the soldering-aid dipping structure comprises a soldering-aid shifting and transposition assembly and a soldering flux lifting assembly, the soldering-aid shifting and transposition assembly is provided with a transposition kinetic energy output end, and the soldering flux lifting assembly is provided with a soldering flux lifting end; the pin tin immersion structure comprises a tin immersion transfer assembly and a tin melting liquid storage assembly. And the impedance detection structure comprises an upper and lower limit alarm resistance meter and a test probe, and can be arranged corresponding to the plurality of groups of electromagnetic coil stations in a switchable manner. The problems that in the prior art, bending and tin immersion processes of electromagnetic coil pins generally depend on manual operation, so that the overall automation degree, the operation efficiency and the qualified rate are low, and the labor cost is high are solved.

The invention discloses a-52 DEG C cold-resistant environment-friendly cable, relates to the technical field of cables, and solves the problem that a cold-resistant environment-friendly cable in the prior art is easy to crack and crack in a low-temperature environment. Comprising a wire core structure, the nylon sheath wire core structure comprises a plurality of conductors distributed in an array, an insulating layer wrapping each conductor and a metal shielding layer wrapping each insulating layer, and each nylon sheath conductor is a tinned copper conductor; the nylon sheath metal shielding layer comprises an inner metal layer and an outer metal layer, the nylon sheath inner metal layer is arranged outside the insulating layer, and the nylon sheath outer metal layer is arranged outside the inner metal layer; the cable also comprises an outer sheath which wraps the cable core structure, and the nylon sheath is made of a thermoplastic elastomer. According to the cable scheme, on one hand, the flexibility, the mechanical strength and the environmental protection performance of the cable can be improved while a low-temperature environment is considered, and on the other hand, the influence of low temperature on data transmission of the cable can be effectively avoided.

The utility model discloses a relay which is provided with pin terminals used for bearing current inflow or outflow respectively, the end portion, used for being connected to the outside, of each pin terminal is provided with at least two connecting portions arranged at intervals in the width direction of the pin terminal, and the sectional area of the end portion of each connecting portion is gradually reduced towards the tail end of the connecting portion to form a tip shape. When the pin terminal is pulled out of a tin furnace, liquid is separated more easily, so that the undesirable phenomenon of the tin tip is reduced, product management and control are facilitated, subsequent processing procedures caused by the undesirable tin tip are avoided, the contact area of the tin liquid and the joint part can be reduced through the tip shape, the tail end of the joint part can enter the tin liquid and pierce the surface of the tin liquid, and the product quality is improved. And copper exposure caused by incomplete tinning is avoided, so that firm welding between the relay and the PCB is ensured when the relay is applied to the PCB.

The invention belongs to the technical field of tin plating materials, and relates to a tin plating plate with high sulfur resistance and a preparation method and application thereof. The tin-plated plate with high sulfur resistance comprises a first passivation layer, a first tin-plated layer, a first multi-component alloy layer, a tin-plated substrate layer, a second multi-component alloy layer, a second tin-plated layer and a second passivation layer which are arranged in sequence, the surface, away from the first tin plating layer, of the first passivation layer is an inner coating surface; the surface, away from the second tin plating layer, of the second passivation layer is an outer coating surface; the arithmetic mean roughness of the inner coating surface is 0.4-0.5 [mu] m, the profile skewness is 0-0.3, and the profile kurtosis is 2.5-3; the arithmetic mean roughness of the outer coating surface is 0.6-0.7 [mu] m, the profile skewness is 0-0.3, and the profile kurtosis is 2.5-3; the first multi-component alloy layer and the second multi-component alloy layer respectively and independently comprise gallium; according to the tin plate with the high sulfur resistance, the binding force between the film layers is high, and the deformation resistance and the sulfur resistance of the film layers are excellent.

The invention discloses a ship cable special-shaped tinned conductor and a production system thereof, the ship cable special-shaped tinned conductor comprises a central lead, the cross section of the central lead is of a circular structure, a layer of concentric single wires is wound outside the central lead, the number of the layer of concentric single wires is not less than 6, the cross section of the layer of concentric single wires is circular, and the cross section of the layer of concentric single wires is circular. An outer ring special-shaped single wire is wound outside the layer of concentric single wires; the invention relates to the technical field of cable conductors, and provides a special-shaped tinned conductor for a ship cable and a production system, through structure optimization and process innovation, the cable performance and the production efficiency are remarkably improved, the conductor adopts a composite structure of multiple layers of concentric single wires and outer ring trapezoidal special-shaped single wires, and tinning treatment is combined, so that the production efficiency is improved. The contact resistance is reduced while the high filling rate is ensured; according to the production system, accurate arrangement and stable winding of multiple layers of single wires are achieved through the grading winch placer, the protective cover body rotating synchronously and the tension compensation device, and the problems that a traditional technology is complex in operation, prone to scratching and the like are solved.

The utility model discloses a modularized outdoor electric meter box, and relates to the technical field of electric meter boxes, in particular to a modularized outdoor electric meter box which comprises a box body, a sealing cover is movably connected to the outer side of the box body, a tinned plate frame is installed in the box body, and a tinned plate frame is connected to the surface of the tinned plate frame. The upper face and the lower face of the inner side of the box body are bent to form supporting bent plates, and a supporting separation beam is movably installed between the two supporting bent plates. According to the modularized outdoor electric meter box, through separated arrangement of the box body and the supporting separation beams, during on-site installation, the tin-plated plate frame and the electric meter support can be rapidly and conveniently installed, meanwhile, the connecting columns can be supported by the connecting sleeves supported on the inner sides of the supporting separation beams and supporting springs and gaskets in the connecting sleeves, and through cooperation of threaded columns and pull rods, the tin-plated plate frame and the electric meter support can be conveniently and rapidly installed. And the positions of the connecting columns can be controlled, so that the supporting separation beam can be conveniently and quickly mounted and dismounted, meanwhile, the supporting stability can be guaranteed, and transportation, dismounting and mounting are facilitated.

The present invention discloses a preparation method of a copper-clad aluminum reflective bus bar and a photovoltaic module. The bus bar body includes a base layer and a tin layer. The base layer includes an aluminum substrate and a copper layer wrapped on the outer surface of the aluminum substrate. The light incident surface of the bus bar body is a serrated structure. Its preparation process is as follows: Step 1, wrap a copper strip on the surface of an aluminum core; Step 2, weld the butt joint of the copper strip by argon arc welding to form a wrapped structure; Step 3, roll the copper-clad aluminum substrate in Step 2 through a rolling mill for reflective pattern rolling to form serrated reflective patterns on one of its surfaces; Step 4: heat-treat the product after rolling in Step 3; Step 5, coat the surface of the product after heat treatment in Step 4 with a soldering flux; Step 6, tin-plate by hot dip plating process; Step 7, cool and wind up. Through the design of the reflective surface pattern, the present invention realizes the improvement of the overall power of the photovoltaic module by increasing the effective utilization rate of light per unit area of the photovoltaic module.

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 relates to the technical field of rail transit cables, in particular to a preparation method of a bending-resistant sensor cable for a high-speed motor train unit. The preparation method comprises the steps of conductor three-layer twisting and annealing, insulating layer gradient extrusion and plasma treatment, filling, twice wrapping, double-layer shielding, double-layer sheath co-extrusion and irradiation crosslinking post-treatment. The structure of the bending-resistant sensor cable sequentially comprises a high-elasticity fiber rope filler, a copper alloy conductor with a TPEE insulating layer, a thin flame-retardant cloth wrapping layer, an elastic silica gel inner shielding layer, a tinned copper wire and fiber filament outer shielding layer, a thin non-woven fabric wrapping layer and a cross-linked polyurethane double-layer sheath from inside to outside. The bending resistance of the cable exceeds 500,000 times, the cable works stably at the temperature of-50 DEG C to 125 DEG C, the service life is prolonged by 2-3 times, and the cable is suitable for the harsh environment of the high-speed motor train unit.

The invention relates to the field of tinning equipment, in particular to energy-saving type double-peak temperature tinning equipment. Comprising a bracket, a tinning furnace and a heater, the bracket is fixedly connected with a tinning furnace; and a plurality of heaters are fixedly connected in the tinning furnace. The inert gas added into the tinning furnace is divided into two flowing channels, so that the inert gas can protect tin liquid in the tinning furnace and prevent the tin liquid from being oxidized, smoke in the tinning cavity and impurities on the surface of the tinning liquid can be removed, meanwhile, heat in the tinning cavity can be utilized for heating the inert gas, and the tinning efficiency is improved. The inert gas is used for preheating the copper wire entering the tinning cavity and drying the copper wire pulled out of the tinning cavity, so that the investment of additionally arranging preheating equipment at the feed port of the tinning furnace and additionally arranging drying equipment at the discharge port of the tinning furnace is reduced; therefore, the heating temperature of the inert gas is inevitably lower than the dissolution temperature of the tin liquid, and the drying effect is prevented from being affected by over-high temperature of the drying cavity.

The invention discloses a miniature waterproof fan and a manufacturing process thereof.The fan comprises a base, a heat absorption bottom, a flexible circuit board assembly, a coil assembly, an impeller assembly, cooling fins, a top cover and a lead frame, and the cooling fins, the flexible circuit board assembly and the coil assembly are arranged in an inner cavity of the base; the lead frame and the heat absorption bottom are integrally formed on the base through an insert injection molding process, and one end of the lead frame extends to an inner cavity of the base and is welded to the flexible circuit board assembly through a thermocompression welding process. According to the invention, the lead frame, the heat absorption bottom and the base form an integrally formed structure through an insert injection molding process, so that a traditional FPC lead-out opening structure on the base is thoroughly eliminated, and the waterproof difficulty is fundamentally solved. Meanwhile, the lead frame, the heat absorption bottom and the base are combined more firmly through the insert injection molding technology, gaps generated by assembly of components in a traditional structure are eliminated, the waterproof performance is further improved, the overall structural strength can be effectively enhanced, and falling impact can be effectively resisted; the surface of the end part of the lead frame is tinned and is welded with the FPC in combination with a thermocompression welding process, so that the welding connection is ensured to be firmer and more reliable, and the anti-vibration effect is improved.

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 invention relates to the technical field of cable manufacturing, in particular to a high-distortion-resistance and high-temperature-resistance cable for wind power generation, which comprises a multi-layer anti-torsion conductor core, a dynamic compensation insulating layer, a three-dimensional braided shielding layer, a spiral heat dissipation channel layer and a sheath which are sequentially arranged from inside to outside, the multi-level anti-torsion conductor core adopts a tinned copper alloy conductor with a five-level stranded structure, the dynamic compensation insulating layer adopts a ceramic silicone rubber and polyolefin nano composite material, and the spiral heat dissipation channel layer is formed by spirally winding hollow metal wires. The defects in the prior art are overcome, the five-stage heterogeneous material twisting design is adopted, the internal stress counteracting effect is generated through the elasticity modulus difference of the materials, the ceramic silicone rubber forms a porous ceramic framework at the temperature of 300 DEG C, meanwhile, pores are filled with polyolefin melt, and the insulation resistance retention rate is larger than 95% after 200 times of thermal shock circulation; and a Venturi effect is formed between the hollow metal wire layers, so that the heat dissipation efficiency can be improved by utilizing external wind.