643 results about "Metal filament" patented technology

A tubular prosthesis device for use within the body. The device includes, a metal filament material formed of metal outer member having an exposed outer surface and a core within the extended outer member formed of a different metal than the outer member. The core is secured within and substantially enclosed by the outer member. The device can be reduced to a small size for introduction into the body lumen and expandable to a sufficiently large size to engage the wall of the body lumen. Stents formed of composite wires are shown.

This invention relates to a pneumatic rubber tire which contains at least one electrically conductive cord extending between its bead portion and its tread portion to provide a path of least electrical resistance. The electrically conductive cord is comprised of at least one electrically conductive metal filament spirally wound around a centrally disposed core of at least one organic fiber. The electrically conductive cord extends from a rubber component in a bead portion of the tire which is relatively electrically conductive to a rubber component in the tread portion of the tire which is relatively electrically conductive in a manner that said electrically conductive cord does not extend to, and therefore is exclusive of, an outer surface of the tire. An electrically conductive path is thereby provided between a mounting surface of the tire in its bead region to a running surface of the tire tread. The electrically conductive cord may also be comprised of an electrically conductive metal filament, electrically conductive carbon fiber, or their combination, spirally wound around a core of at least one organic fiber.

This invention relates to a saw bit belonging to mechanical working field, which comprises metal base being alloy steel or carbon steel, with Phi8-Phi10mm radiating holes equispaced on its surface; Carcass including alumina, zircite, quartz, tungsten carbide, zirconium diboride, molybdenum disilicide; common abradant including brown fused alumina, carbofrax, green silicon carbide, cubic carbofrax, boron carbide; superhard abradant including diamond and cubic boron nitride. The produce process includes mixing carcass flour, working layered material batching-mixing process, welding layered material batching-mixing process, koldflo, thermal pressing-sintering formation, arc milling, welding, dressing and making edge. The invention has improved working efficiency, lowered product cost, and is suitable for cutting metal tube, plate such as this materials.

Metal powders are formed by the electro-explosive wire (EEW) method. The device (20) for producing this powder comprises a closed loop gas passage between the reaction chamber (100) and the extractor (32). The wire (31) is transported from the source (400) to the chamber along the wire channel from the ambient conditions outside the reaction chamber. Inside the chamber, a first electrode (200) has a hole defining said wire channel, and a second electrode (202) is near the end of the wire channel. The electric energy source (26) applies a discharge voltage between the electrodes to make this section of metal wire explode to form initial particles. The starting microparticles can optionally be extracted and processed to produce desired powders, especially high energy powders that are passivated so as to be stable under ambient conditions.

The invention provides an electromagnetic shielding yarn of metal filament-wrapped elastic filaments and production equipment as well as a production method thereof. The electromagnetic shielding yarn is characterized by comprising elastic filaments, wherein wrap yarn sections are wound outside the elastic filaments and comprise metal filaments and chopped fiber strands which wrap the metal filaments. The production equipment comprises a ring spinning frame, and is characterized by also comprising a tension pulley, a holding roller, a yarn guide hook and a bundler. In the invention, the composite yarn with high extensibility and elasticity and electromagnetic shielding function can be prepared. The obtained electromagnetic shielding yarn can be used for producing common clothes and household and industrial textile products.

An abrasive article including a substrate made of a wire, abrasive particles affixed to the substrate, the abrasive particles having a first coating layer overlying the abrasive particles, and a second coating layer different than the first coating layer overlying the first coating layer. The abrasive article further including a bonding layer overlying the substrate and abrasive particles.

The invention discloses a method for preparing zirconium metal filaments. The method comprises the steps of firstly, preparing zirconium ingots and forging bar billets; secondly, rolling the bar billets into bars and machining and removing surface scales; thirdly, drawing the bars to obtain wires; fourthly, performing acid cleaning to the wires and then carrying out vacuum annealing; fifthly, carrying out multi-path drawing on the wires after vacuum annealing, and then performing vacuum annealing to the drawn wires; sixthly, carrying out acid pickling, prefilming, electroplating and flushing on the wires subjected to vacuum annealing sequentiall, and then drying; seventhly; seventhly, bundling the dried wires and loading into copper tubes and compounding on a broaching machine so as to obtain composite tubes, and drawing after vacuum annealing; and eighthly, carrying out acid pickling on the drawn composite tubes to remove copper and oxidation films, flushing with deionized water, and naturally drying to obtain the zirconium fiber filaments. According to the method, the bundling and drawing process is adopted to prepare the zirconium fiber filaments, and the zirconium composite tube cannot be fractured during the bundling and drawing process due to selection of proper zirconium-copper cross section ratio.

An electromagnetic shielding device has a bottom layer, a shielding layer and a top layer. The shielding layer is mounted between the bottom layer and the top layer and is made of metal filaments and textile fibers. The metal filaments and the textile fibers of the shielding layer are blended and formed into a mesh. The electromagnetic shielding device in the present invention may be made into patches or forms that can be adhered to electrical and electronic equipment, or adapted for use in clothing.

The invention provides a method for repairing and remanufacturing the surface of a piston rod of a hydraulic cylinder or the outer surface of an intermediate cylinder for coal mines. Aiming at remanufacturing after the surface of the piston rod of the hydraulic cylinder or the outer surface of the intermediate cylinder for the coal mines is damaged and fails, the long-term practice is combined, a metal wire adopting the specific metal powder proportion is creatively designed to serve as a powder core wire, and namely the metal wire is formed by wrapping the metal powder with Cr, Ni and Fe as the main ingredients through a stainless steel foil layer; based on the arc thermal spraying process method, the surface is repaired and remanufactured creatively, and on the premise that the corrosion resistance and the hardness of the repaired layer of the surface are equal to those of the surface treated through the surface laser cladding technology, consideration is given to the good economic applicability and the good practical production efficiency; an existing electroplating technology can be completely replaced, and the method has the wide application and popularization prospects in repairing of the piston rod of the hydraulic support oil cylinder and the intermediate cylinder for the coal mines.

The invention discloses gas atomization powder production equipment and a powder production method thereof and belongs to the technical field of metal powder production. The gas atomization powder production equipment is characterized in that a rotary support rack for placing a metal wire material plate is arranged in the raw material bin of the powder production equipment; a smelting chamber is communicated with the raw material bin and provided with an induction coil and a wire feeder inside, and the wire feeder is used for guiding metal wire on the rotary support rack into a positon above the center of the induction coil; an atomizer is connected with the smelting chamber, and the upper-end opening of the atomizing nozzle of the atomizer faces the induction coil; an atomizing tower is connected with a cyclone separator, and the top of the atomizing tower is connected with the atomizer; a vacuum system is connected with the atomizing tower. The powder production equipment and the powder production method thereof have the advantages that the bar-shaped raw material is replaced by the metal wire, the utilization rate and production efficiency of atomizing gas are increased, and cost of gas atomization powder production is lowered; small liquid drops can obtain high superheat degree favorably, and the fine powder content in the atomized powder is increased.

The invention relates to brazing diamond fret saw with grinding materials being arranged in order in a spiral shape and a manufacturing process thereof, belonging to the field of manufacturing of grinding materials and grinding apparatus. The brazing diamond fret saw is composed of a steel wire substrate, brazing bonding agent and diamond grinding materials which are arranged in a spiral shape. The key steps of the process are as follows: coating pressure sensitive adhesive on the surface of the steel wire substrate; evenly winding a fine metal silk thread or nonmetal silk thread on the steel wire coated with pressure sensitive adhesive in a certain thread pitch; arranging the diamond grinding materials; dismantling the metal silk thread or the nonmetal silk thread; arranging a layer of powdery brazing filler metal; heating to the melting of the brazing filler metal in vacuum or protective atmosphere; and fixing the cooled diamond grinding materials firmly on the surface of the steel wire through brazing bonding agent to form the brazing diamond fret saw with the grinding materials being arranged in order in a spiral shape. The fret saw has the advantages of long cutting service life and high cutting efficiency.

Wind turbine blade has a longitudinal direction and includes a shell structure made of a fibre-reinforced polymer material including a polymer matrix and reinforcement material comprising a plurality of carbon fibre layers embedded in the polymer matrix. At least a portion of the shell structure is formed of a laminate 6 comprising at least one metal filament layer 15, 18 comprising metal filaments and being sandwiched between two carbon fibre layers 16,16;17,18 comprising carbon fibres only. The carbon fibre layers are arranged contiguously with the metal filament layer.

The invention relates to a method for producing compound filter of multi-layer metal meshes and metal powder, which comprises the steps of weaving metal wires to obtain metal meshes with different mesh numbers; laminating the metal meshes with different mesh numbers to obtain a laminated layer structure, wherein the mesh numbers of the laminated layers from one side to the other side increase continuously and the number of laminated layers is 2-6; then placing the laminated layer structure in a vacuum furnace and sintering at 1000-1600 DEG C to obtain a multiple support layers; then cooling and taking out of the support layers, manufacturing a metal compound layer of 100-600 meshes on one side of the support layer of high mesh by means of electrostatic spraying and curtain coating, controlling the thickness of the compound layer with 0.1-0.5mm and then sintering at 1000-1600 DEG C, cooling and taking out of the compound layer to obtain the compound filter of multi-layer metal meshes and metal powder. The compound filter has the advantages of low filtering resistance, large filter flux and strong bearing capacity and can be widely applied to industrial fields of chemical engineering, medicine, power generation,metallurgy, food and the like.

The invention relates to a powder preparation method for an induction heating and radio frequency plasma combined atomizing powder system. The powder preparation method comprises the following steps that (1), raw materials are prepared and processed; (2), the system is pre-vacuumed and a protective atmosphere is established; (3), wire materials are straightened and conveyed; (4), high-frequency induction preheating is carried out; (5), radio frequency plasma melting is carried out; (6), powders are prepared by atomizing; (7), separation and dust removal are carried out; and (8), the powder size is graded. The powder preparation method for the induction heating and radiofrequency plasma combined atomizing powder system uses high purity metal wire material instead of the powders as the raw materials, so that the carrying of raw materials to adsorb gas and water is reduced; a technology of the high frequency induction heating combined with the radio frequency plasma smelting and gas atomization is adopted, during the whole process of heating, melting, and the gas atomization is free of pollution and impurities in the protective atmosphere, and the degree of superheat of liquid flow ordroplets is increased during the process of radio frequency plasma smelting; and high quality spherical powders can be obtained by adopting high pressure atomizing nozzles atomizing, and the yield ofmetal powders per unit time is increased.

The invention provides a metal-metal oxide pH electrode and a preparation method thereof. The method comprises the following steps of: using a chemically stable metal filament is used as a basal body, removing the original oxide film on the surface of the metal filament by mechanical polishing and chemical cleaning, and forming a IrOx (x=1 to 3) active oxide film sensitive to hydrogen ion on the treated metal filament surface with the thermal decomposition method. Comparing with glass pH electrode and conventional metal-metal oxide pH electrode, the inventive metal-metal oxide pH electrode has the advantages of simples preparation method, low cost, easiness for batch production, high mechanical strength, low fracture liability, small volume, high sensitivity of pH measurement, and rapid response speed, wide response range; and is suitable for pH measurement of low-temperature solution with wide pH range, particularly solution below zero degree (such as anti-freezing fluid and refrigerating fluid).

The invention discloses a household electromagnetic-shielding radiation-proof textile fiber material. The household electromagnetic-shielding radiation-proof textile fiber material comprises two-component or three-component radiation-proof yarn formed by blending metal filament fibers with polyester fibers, cotton or viscose fibers, wherein the weight of the metal filament fibers accounts for 20-35% of that of the two-component radiation-proof yarn, and the weight of the other component accounts for 65-80% of that of the two-component radiation-proof yarn; the weight of the metal filament fibers accounts for 15-25% of that of the three-component radiation-proof yarn, and the weights of another two components account for 30-35% and 40-55% of that of the three-component radiation-proof yarn respectively. The invention further discloses radiation-proof shell fabric produced from the household electromagnetic-shielding radiation-proof textile fiber material and application of the shell fabric. The radiation-proof shell fabric produced from the household electromagnetic-shielding radiation-proof textile fiber material is remarkable in radiation-proof effect, is not less than 90% in antibacterial rate for staphylococcus aureus, candida sporogenes and escherichia coli, and can be produced into radiation-proof home textiles such as suites, quilts and mosquito nets.

The invention discloses a standard hot isostatic pressing diffusion bonding device and a method thereof, and relates to a diffusion bonding device and a method. The invention aims to solve the problems that the bonding precision of the conventional diffusion bonding is not easy to control, and the prior hot isostatic pressing diffusion bonding needs to be completed on hot isostatic pressing equipment. In the device, a top sliding block and a bottom sliding block are arranged at the upper end and the lower end of a cylinder respectively, and an inner cavity of the cylinder is filled with powder. The method comprises that: the surfaces of members to be bonded are subjected to finish machining and ultrasonic cleaning; the surfaces to be bonded are overlapped oppositely, the butted side surface is covered with a 50 to 100 mu m metal foil, and the members are fixed by winding metal wires on the metal foil and then buried into the powder of the inner cavity of the cylinder; the device is put into a furnace hearth of a diffusion welding machine, and a pressure head on the welding machine directly acts on the top sliding block; and the members are heated, insulated and cooled to room temperature. The invention adopts the flowing powder as a pressurizing medium to replace single axial pressurization, and the members are uniformly heated and have little deformation; and a common diffusion welding machine can realize hot isostatic pressing precision diffusion bonding of complicated members.