摘要:
A method of fabricating composite filaments is provided. An initial composite filament including a core and a cladding (such as a Pt-group metal) is cut into smaller pieces (or is first mechanically reduced and then cut into smaller pieces). The smaller pieces of the filaments are inserted into a metal matrix, and the entire structure is then further reduced mechanically in a series of reduction steps. The process can be repeated until the desired cross sectional dimension of the filaments is achieved. The matrix can then be chemically removed to isolate the final composite filaments with the cladding thickness down to the nanometer range. The process allows the organization and integration of filaments of different sizes, compositions, and functionalities into arrays suitable for various applications. Materials and components made from such composite filaments and arrays of composite filaments are also disclosed.
摘要:
A method of forming a flat bar is provided. A tube is provided having an inside surface and an outside surface. The outside surface of the tube can be clad with a nickel or stainless alloy material. A helix shaped strip can be cut from the tube. The helix shaped strip can be uncoiled to form an uncoiled strip, and the uncoiled strip can be straightened and flattened to meet mill standards.
摘要:
A method of forming a flat bar is provided. A tube is provided having an inside surface and an outside surface. The outside surface of the tube can be clad with a nickel or stainless alloy material. A helix shaped strip can be cut from the tube. The helix shaped strip can be uncoiled to form an uncoiled strip, and the uncoiled strip can be straightened and flattened to meet mill standards.
摘要:
A molten metal refining wire (11) comprises a metal sheath (12) encapsulating a core (14) of refining material, such as pure calcium powder, wherein the core (14) is sealed within the sheath (12) in a fluid-tight manner. A corresponding method of manufacturing the molten metal refining wire (11) is disclosed, as well as a method of refining molten metal by injecting the refining wire (11) into the molten metal.
摘要:
The present invention provides an isothermal processing method for making an isothermal processed copper clad aluminum composite comprising: providing an aluminum component and a copper component; cleaning the aluminum component and shape finishing the aluminum component; extruding the aluminum component into a core aluminum billet; cleaning the copper component; transforming the copper component into a copper cladding layer; cladding longitudinal and circumferential surfaces of the core aluminum billet with the copper cladding layer and molding the core aluminum billet and the copper cladding layer together to form a copper cladded aluminum billet; and transforming the copper cladded aluminum billet into an isothermal processed copper cladded aluminum composite through isothermal rolling and annealing. The present invention also provides an isothermal processed copper cladded aluminum composite and a system for manufacturing an isothermal processed copper cladded aluminum composite.
摘要:
A method of fabricating composite filaments is provided. An initial composite filament including a core and a cladding (such as a Pt-group metal) is cut into smaller pieces (or is first mechanically reduced and then cut into smaller pieces). The smaller pieces of the filaments are inserted into a metal matrix, and the entire structure is then further reduced mechanically in a series of reduction steps. The process can be repeated until the desired cross sectional dimension of the filaments is achieved. The matrix can then be chemically removed to isolate the final composite filaments with the cladding thickness down to the nanometer range. The process allows the organization and integration of filaments of different sizes, compositions, and functionalities into arrays suitable for various applications. Materials and components made from such composite filaments and arrays of composite filaments are also disclosed,
摘要:
A method of drawing a glass clad wire is provided herein, the method comprising: (i) sealing off one end of a glass tube such that the tube has an open end and a closed end; (ii) introducing a wire material inside the glass tube; (iii) heating a portion of the glass tube such that the glass partially melts to form a first ampoule containing the wire material to be used in a drawing operation; (iv) introducing the first ampoule containing the wire material into a heating device; (v) increasing the temperature within the heating device such that the glass tube is heated enough for it to be drawn and wire material melts; and (vi) drawing the glass clad wire comprising a continuous wire of wire material, wherein the wire material is a metal, semi-metal, alloy, or semiconductor thermoelectrically active material, and wherein the wire diameter is equal to or smaller than about 5 μm.
摘要:
An apparatus and method for moving a wire along its own axis against a high resistance to its motion causing a substantial uniaxial compression stress in the wire without allowing it to buckle. The apparatus consists of a wire gripping and moving drive wheel and guide rollers for transporting the moving wire away from the drive wheel. Wire is pressed into a peripheral groove in a relatively large diameter, rotating drive wheel by a set of small diameter rollers arranged along part of the periphery causing the wire to be gripped by the groove.
摘要:
A thin-walled introducer sheath is described. In some embodiments, the introducer sheath includes structural support components, such as wires, used in connection with a polymeric inner coating, a polymeric outer coating, or both. Further, in some embodiments, the wire components are annealed to reduce cold-work-related stresses and hardness. Use of annealed components may enable a reduction in the thickness of the polymeric outer coating in some applications.
摘要:
Disclosed are an electrode wire for electro-discharge machining and a method for manufacturing the same. The electrode wire includes a core wire including a first metal including copper, a first alloy layer formed at a boundary region between the core wire and a second metal plated on an outer surface of the core wire due to mutual diffusion between the core wire and the second metal, and a second alloy layer formed due to diffusion of the first metal to the second metal. A core wire material is erupted onto a surface of the electrode wire for electro-discharge machining, which includes the core wire, the first alloy layer, and the second alloy layer, along cracks appearing on the second alloy layer, so that a plurality of grains are formed on the surface of the electrode wire.