815 results about "Copper tape" patented technology

The invention discloses a production technique of copper strips for solar modules, which belongs to the technical field of nonferrous metal processing and comprises the following steps: drawing-up of continuous-casting oxygen-free copper bar: using high-quality electrolytic copper as the raw material, melting at 1150+/-10 DEG C, keeping the temperature, covering the copper liquid surface with charcoal and graphite scales to ensure the vacuum state during melting, degassing on line, deoxidizing, stirring, and drawing up the copper bar with a tractor set in an on-off vacuum way; continuous extrusion of copper strip blanks: using oxygen-free copper rods as the raw material, producing copper strip blanks by using a continuous extruder set, cooling the extruded copper strip blanks through a vacuum oxidation-resisting pipe and a water tank, drying and coiling; and rough-rolling the copper strip blanks, medium-rolling, interstage annealing, finish rolling, degreasing, washing, annealing the finished product, washing, grinding the surface to passivate, and longitudinally cutting to obtain the finished product. The product of the invention has the advantages of high purity, low oxygen content and high electrical conductivity.

The invention discloses a diffuse reflection type tin-coated welding strip and a method for producing the same. The diffuse reflection type tin-coated welding strip comprises a copper strip and a tin coating on the copper strip, wherein the surface of the tin coating is provided with distributed pit-shaped bodies. The production method comprises the following steps of: raising the temperature in a tin furnace to between 230 and 250 DEG C, and putting the copper strip in metallic alloy coating solution in the tin furnace for immersion tin-coating, wherein the speed of the immersion tin-coating is controlled to be 1 to 2m/min; and taking the tin-coated welding strip subjected to the immersion coating out, and cooling the tin coating on the surface of the copper strip by an air blower and a screen arranged on the air blower to obtain the distributed pit-shaped bodies. Because the surface of the tin coating is provided with the distributed pit-shaped bodies, the physical indexes of the diffuse reflection type tin-coated welding strip are stable, and the diffuse reflection type tin-coated welding strip can diffuse sunlight, so that more sunlight can be reflected to a battery plate, and the received solar energy is increased.

The invention provides a production method of a high-power precision alloy SMD (surface mount device) resistor. The production method comprises the steps: respectively combining two oxygen-free copper strips with two sides of a resistor alloy strip to form an integrated strip-shaped resistor strip, and wrapping a high-heat-conductivity substrate with the integrated strip-shaped resistor strip; etching a basic resistor structure on a wrapping body; precisely adjusting the resistance value of the basic resistance structure; coating, terminal electroplating and printing a resistor body to form a high-power precision alloy SMD resistor. The material with high heat radiation capability and high heat conductivity such as a metal substrate, a high-heat-conductivity ceramic substrate is used as the substrate, so that the actual load capacity of the resistor is greatly increased; the oxygen-free copper strip is partially arranged on the side surface and below the substrate and used as an electrode lead, so that the contact area is increased, and the heat conductivity of the resistor body is also increased on the other hand.

A technology for rolling the composite Cu-Al plate includes such steps as preheating the copper band and aluminium plate respectively at different temp for different time, acid washing of copper band, alkali washing of aluminium plate, brushing surface by steel wire brush, rolling by a pair of upper concave roller and lower convex roller, annealing in inertial gas, and straightening.

The invention discloses a production technology for a bimetal coating copper strip, which comprises the following steps: 1, smelting casting: preheating and drying electrolytic copper and placing in a smelting device for melting, adopting wood coal and graphite flakes to cover the surface of copper liquid, and after performing degasification and deoxidation on line by a degasification device, using a traction machine set to guide a copper rod upwards in a vacuum clutch type way to enable the copper rod to enter a wire taking-up device; 2, continuous extruding: enabling the oxygen-free copper rod obtained in step 1 to pass through a continuous extrusion machine set to produce a copper strip plate, and quickly using a cooling medium to cool to 20-30 DEG C to obtain the fine grain structured copper strip plate with the grain size of 0.005 mm to 0.010 mm; 3, rolling; 4, intermediate annealing; 5, fine rolling; 6, annealing; 7, cleaning and inactivating; 8, cutting; and 9, packaging and storing into a warehouse. According to the invention, the production technology has the advantages of excellent welding performance, high plastic processing performance, high electric conductivity, high surface quality and the like, and the technological process is short, and the technology is efficient and energy-saving.

The product of the present invention comprises flexible tray cables and metal-clad cables designed for use with adjustable speed drives, and terminations coupled therewith. The cables comprise, generally, three phase conductors, three ground conductors and fillers, and are wrapped with copper tape and other elements. The terminations comprise a plurality of connectors and a plurality of flexible, tinned-copper braids acting as the shield termination for the copper tape. More detailed and other embodiments of the present invention are disclosed in the specification hereof.

The invention discloses a tin-lead welding strip for a solar photovoltaic assembly, which comprises a copper strip base material, wherein a compact tin-lead alloy layer with a thickness of 3-20 micrometers covers the surface of the copper strip base material. A manufacturing method of the tin-lead welding strip for the solar photovoltaic assembly comprises the step of: covering the compact tin-lead alloy layer on the copper strip base material by adopting an electroplating method, wherein the thickness of the tin-lead alloy layer is 3-20 micrometers. Because the electroplating method is adopted, a cladding material has a crystal lattice characteristic and capacities of enhancing adhesive force of the welding strip and improving the conductivity of the photovoltaic welding strip. The welding strip has a volume resistivity of 0.0185-0.021omega mm<2>/m which is lower than that of the welding strip manufactured through thermal tin immersion and a melting point of 183-190 DEG C lower than that of a lead-free welding strip, and has no abnormal phenomena such as tin knobs, tin dross, copper cuttings, discoloration and the like. A process capability index (CPK) value is effectively increased.

The invention relates to a broadband radial pattern leaky coaxial cable used for subway and a manufacturing method thereof, and the leaky coaxial cable has the double functions of transmission line of information and duplexer. The structure of the leaky coaxial cable consists of an inner conductor, an insulation layer, an outer conductor and a jacket, wherein, the inner conductor is externally covered with the insulation layer which is externally covered with the outer conductor that is externally sheathed with the jacket, and the insulation layer that covers on the surface of the inner conductor adopts nitrogen or carbon dioxide physical foam to form a foamed polyethylene insulation layer; cambered slotted holes are opened on a clutch gold belt of the outer conductor covered outside the insulation layer. The manufacturing method comprises the steps: (1) a spiral wrinkle inner conductor is manufactured by longitudinal covering welding and embossing by using a copper strip; (2) the nitrogen or the carbon dioxide are adopted to be injected into the smelted polyvinyl plastics, and then the physical foamed polyethylene insulation layer is formed on the surface of the inner conductor by extrusion and cladding; (3) the slotted holes broken out by the clutch gold belt of the outer conductor are the cambered slotted holes; (4) the clutch gold belt of the outer conductor is covered on the insulation layer longitudinally, and the surface of the clutch gold belt of the outer conductor is crowded and covered with the jacket.

The invention belongs to the field of superconducting material and relates to a superconducting strand based on a ReBCO high-temperature superconducting tape. The superconducting strand comprises a superconducting strand core and a coating layer. The ReBCO high-temperature superconducting tape is cut into tapes which are arranged and stacked to be the superconducting strand core with circular, square or rectangular cross section; the coating layer is made of copper tapes, aluminum tapes, aluminum alloy tapes, stainless steel tapes or ReBCO coating superconducting tapes; the coating layer is rolled and coated on the superconducting strand core. A laser Ag welding technology is used for carrying out butt-seam welding on the coating tapes. The superconducting strand provided by the invention expands the application range of the coating superconductor, improves engineering current density, flexibility and mechanical strength of the superconducting wire, and is applicable to a superconducting cable, a current guide wire, and the like.

The invention discloses a high-efficiency production line for bimetallic composite wires, which comprises an aluminum rod butt welding machine (1), an aluminum rod discharging rack (2), and an aluminum rod drawing machine (3) arranged in sequence; and a copper strip discharging machine arranged in sequence frame (4), copper strip butt joint machine (5), copper strip cleaning tank (6), copper strip drying machine (7), copper strip grinding machine (9) and overmolding machine (10) arranged in sequence, welding device (11), composite wire billet drawing machine (12), wire take-up machine (13); an aluminum bar peeling device ( 14), a copper strip warehouse (15) is provided between the copper strip butt joint machine (5) and the copper strip cleaning tank (6), which can reduce the labor intensity of workers, ensure continuous production and increase the yield of finished products.

This invention relates to electricity materials technique field and to one silve to copper double compound band process method, which comprises the following steps: firstly grinding the silver metal oxidation with one thin siver band to form silver metal oxidation or silver compound materials; grinding silver metal oxidation and silver compound band through its top silver band layer and copper band heat grinding through heat compound band for annealing.

An antenna includes a dipole radiator region forming a series resonant tank having a first quality factor value Q1, and a loop compensator/radiator region integral with the dipole region and forming a parallel resonant tank having a second quality factor value Q2 that is substantially equal to Q2. The antenna may be a conductive sheet antenna (e.g., comprising copper tape) having a generally “A” shaped structure with a discontinuity in a middle segment.

The present invention provides a method of forming a single-layer coil for an electrical machine in a single process from a length of insulated rectangular conductor such as copper tape, for example. The coil is formed by winding the conductor around first and second coil-forming members 5 and 7 provided on a beam 6 having a longitudinal axis and which is capable of being rotated about a first axis of rotation that is substantially parallel to the longitudinal axis of the beam and a second axis of rotation that is substantially at right angles to the longitudinal axis of the beam.

The invention discloses a surface irregular high-power tin-plate cooper strip of a photovoltaic subassembly and a manufacture method of the surface irregular high-power tin-plate copper strip. The tin-plate copper strip comprises an oxygen-free cooper strip which serves as a base material, and a tin-plate layer covered on the external surface of the oxygen-free cooper strip, wherein irregular structures are also uniformly distributed on the positive surface and the negative surface of the oxygen-free cooper strip; and the irregular structures are in regular geometrical shapes in the form of a groove. The stability of the physical performance of a product can be ensured by the irregular structures, simultaneously the irregular structure at the negative surface can enlarge the contact area with a battery piece, and can improve the welding performance while combining with the battery piece; while being used in combination with the common solar battery piece, the irregular structure on the positive surface can reflect more sunshine on the battery piece due to the irregular structure, and therefore, the power of a whole solar photovoltaic subassembly can be improved; while being used in combination of a photothermal-photovolatic battery piece subassembly, the irregular structure on the positive surface can enlarge the heating area due to the enlarged surface area of the irregular structure, besides the reflection of the sunshine is improved, and thus, the power of the whole solar photovoltaic subassembly can be improved to a greater extent.

The invention discloses a high-entropy flux cored wire for aluminum-steel MIG welding. Powder is prepared from, by atomic percentage, 5%-15% of Fe, 10%-20% of Al, 20%-30% of Co, 18%-35% of Cr, 20%-35%of Ni and 5%-13% of Cu, and the total percentage is 100%. Industrial high-purity copper tape is adopted for an outer skin material. A preparation method comprises the steps that firstly, a mother alloy is melted; secondly, atomized power is prepared by applying a vacuum gas atomization powdering technology; and thirdly, the high-entropy flux cored wire is prepared by the adoption of flux cored wire forming unit equipment. The high-entropy flux cored welding wire is used for aluminum-steel MIG welding, a high-quality aluminum-steel welded joint is obtained, the chemical compositions of weld metal are within a principal element range of a high-entropy alloy, and the high entropy of a weld is achieved. The weld has excellent strength and toughness, brittle intermetallic compound phases are eliminated effectively, and the good synthesized mechanical properties are provided.

The invention discloses a hot rolling production technology of a copper-aluminum composite board. The hot rolling production technology comprises the following technological steps of raw material preparation, surface treatment, heating, rolling bonding, annealing and slitting, specifically, the thickness and the width of an aluminum strip and a copper strip are selected according to needs; surfacepolishing treatment is conducted on the aluminum strip and the copper strip respectively; the aluminum strip and the copper strip are heated in an upper layer heating furnace and a lower layer heating furnace correspondingly; the heated aluminum strip and the heated copper strip enter a rolling mill synchronously to be rolled and bonded, and the copper-aluminum composite board is obtained; annealing is conducted on the copper-aluminum composite board which is subjected to rolling and bonding by adopting a bell type heating technology; the annealed copper-aluminum composite board is cooled tobe at the normal temperature, and slit into flat boards. According to the hot rolling production technology, hot rolling bonding of the copper-aluminum composite board can be achieved by controlling the heating temperatures of the copper strip and the aluminum strip respectively, bonding can be achieved through one-time rolling, the problems that the rolling force is large and rolling needs to beconducted for many times in the cold rolling bonding process are solved, the utilization property of the composite board is improved, the production efficiency is increased and the cost is lowered.

There is provided a light adjuster which is capable of improving handleability thereof and preventing the occurrence of operation failure. A light adjuster 103 is comprised of a pair of PET films 109a and 109b that sandwich a liquid crystal layer 108 therebetween, transparent electrically conductive films 110a and 110b that are provided on respective facing surfaces of the pair of PET films 109a and 109b, and an electrode structure provided at one end of the light adjuster 103. The electrode structure is comprised of a connecting base formed of a silver paste 111 that is applied to an exposed part of the transparent electrically conductive film 110b, a copper tape 112 that is stuck on the upper surface of the silver paste 111, and a tabular connector 113 made of a metal that is pressed onto the copper tape 112 at one end thereof. A lead line 115 is secured to the other end of the connector 113 by solder 114 to supply power from an external power source. The thickness of the electrode structure is not less than the value of the combined thickness of the liquid crystal layer 108, the transparent electrically conductive film 110a, and the PET film 109a.

The invention discloses a method for manufacturing a photovoltaic solder strip. The method for manufacturing the photovoltaic solder strip includes the flowing steps: a, embossing a raw material, namely a copper strip, with a metal embossing process, forming a reflective groove structure on the surface of the copper strip, obtaining a first semi-finished product, b, conducting an annealing treatment on the first semi-finished product with an annealing process, forming a second semi-finished product, c, selecting proper coated metal, conducting electroplating on the second semi-finished product with an electroplating process, controlling the plating thickness and making the plating thickness to be ranged from 1 micrometer to 30 micrometers, and obtaining the needed photovoltaic solder strip. By means of the photovoltaic solder strip manufactured through the above method, the optical use ratio of a solar cell module can be improved, the manufacturing cost of the photovoltaic solder strip is reduced, the work efficiency of the photovoltaic solder strip is improved, and industrialized production is achieved.

A charge supplier improves an electrically charged state of a vehicle or the like by allowing any part of the vehicle, such as an engine and electrical equipments, to maintain its movements. A charge supplier includes a plurality of rectangular tablet-like germanium chips bonded to a copper plate using a conductive adhesive, and a copper tape folded to sandwich the copper plate, so that the germanium chips are provided between the copper plate and the copper tape. The copper tape may be secured to the copper plate by pressing the copper tape toward the copper plate to deform the copper tape, or by using a conductive adhesive. An attaching terminal is provided in the copper plate on the side of the opening of the copper tape which is folded in a shape of “U”.

The invention relates to a method for producing copper strips with a bright surface and no oxidation. The method sequentially includes a horizontal continuous casting step, a cold rolling step and an annealing step. In the horizontal continuous casting step described above, a conjoined furnace is used for smelting, and at the same time, a coupled crystallizer with a steam chamber installed between the primary water cooling system and the secondary water cooling system to protect the surface of the strip from oxygen is used to smelt the strip. Casting, thus avoiding oxidation on the surface of the billet, omitting the hot rolling step and directly performing cold rolling, and directly annealing without the pickling and alkali washing steps. The surface of the copper strip produced by the invention is smooth and free from oxidation, the energy consumption in the production process is low and pollution-free, the cost is low, the process control is relatively simple, and it is suitable for the production of small and medium-sized enterprises.