Abstract:
A concentric ring gas atomization nozzle with isolated gas supply manifolds is provided for manipulating the close-coupled atomization gas structure to improve the yield of atomized powders.
Abstract:
Embodiments of the invention generally include apparatus and methods for depositing nanowires in a predetermined pattern during an electrospinning process. An apparatus includes a nozzle for containing and ejecting a deposition material, and a voltage source coupled to the nozzle to eject the deposition material. One or more electric field shaping devices are positioned to shape the electric field adjacent to a substrate to control the trajectory of the ejected deposition material. The electric field shaping device converges an electric field at a point near the surface of the substrate to accurately deposit the deposition material on the substrate in a predetermined pattern. The methods include applying a voltage to a nozzle to eject an electrically-charged deposition material towards a substrate, and shaping one or more electric fields to control the trajectory of the electrically-charged deposition material. The deposition material is then deposited on the substrate in a predetermined pattern.
Abstract:
Nuclear metal or alloy particle preparation method and device; said device comprising: means to prepare a fluid mass of the metal or alloy by melting; means to put the fluid mass of the metal or metal alloy in the form of a molten metal or alloy stream; means to impart a centrifugal rotation movement to a quenching fluid and carry out the atomisation of the molten metal or metal alloy stream particles and the quick quenching of the particles; means to melt the nuclear metal or metal alloy in an inert gas atmosphere, and means to surround the molten metal or metal alloy stream by a neutral gas envelope until quenching.
Abstract:
An atomizer includes a T-shaped chamber with tapered insides and an outlet which is in communication with the chamber. A first path is located in a center area in the chamber so as to introduce molten metal therein and two second paths are introduced into the chamber so as to send inert gas into the chamber. A separator is located in the chamber and located at an outlet end of the first path. A narrow passage is defined between an inside of the outlet and the separator. The impact of the inert gas and the molten metal atomizes the metal.
Abstract:
An apparatus for forming three-dimensional objects includes a crucible (1) for holding a molten material; a conically-shaped orifice (1a) having a fixed outlet diameter (d0) at the bottom of the crucible through which a jet (50) of the molten material flows towards the substrate; and an oscillating mechanical member (5) for breaking the flow of molten material into the molten material drops (60). The oscillating mechanical member further includes a conically-shaped head (5a) for cooperating with the orifice (1a) and for varying the effective size of the orifice. The conically-shaped head includes a slanted radial portion (5c) and a tip portion (5b) extending through the orifice. The effective diameter (deff) of the jet is defined by the relationship deff=[d02−(d0−δ tan θ)2]1/2, wherein δ represents the amount of the tip portion extending through the orifice, and θ represents a slant angle corresponding to the slanted radial portion of the conically-shaped head.
Abstract:
An alkaline battery having as an anode a zinc or zinc alloy powder obtained by dropping molten zinc or a molten zinc alloy to form a molten metal droplets stream and striking an atomizing medium jet emitted from a nozzle against the molten metal stream at right angles to atomize the molten zinc or the molten zinc alloy, wherein two or more the nozzles are arranged in parallel to each other, the orifice of each of the nozzles has a V-shaped, U-shaped, X-shaped or arc-shaped cross-section, the atomizing medium is air or an inert gas, two or more the molten metal streams have at least two different flow rates selected from a range 0.04 to 025 kg/sec, and two or more of the atomizing medium jets have at least two different atomizing pressures selected from a range 4 to 9 kg/cm2.
Abstract translation:一种碱性电池,其具有作为阳极的锌或锌合金粉末,其通过滴加熔融锌或熔融锌合金形成熔融金属液滴流,并将从喷嘴喷射的雾化介质喷射抵靠熔融金属流成直角雾化 熔融锌或熔融锌合金,其中两个或更多个喷嘴彼此平行地布置,每个喷嘴的孔具有V形,U形,X形或弧形的横截面 雾化介质是空气或惰性气体,两个或更多个熔融金属流具有选自0.04-025kg / sec的至少两种不同的流速,并且两个或多个雾化介质喷射器具有至少两种不同的 雾化压力选自4至9kg / cm 2。
Abstract:
Nuclear metal or alloy particle preparation method and device; said device comprising means to prepare a fluid mass of the metal or alloy by melting ; means to put the fluid mass of the metal or metal alloy in the form of a molten metal or alloy stream ; means to impart a centrifugal rotation movement to a quenching fluid and carry out the atomisation of the molten metal or metal alloy stream particles and the quick quenching of the particles means to melt the nuclear metal or metal alloy in an inert gas atmosphere, and means to surround the molten metal or metal alloy stream by a neutral gas envelope until quenching. Single figure.
Abstract:
A method of atomization of refined metal is taught. The method starts with the introduction of unrefined metal into an electroslag refining process in which the unrefined metal is first melted at the upper surface of the refining slag. The molten metal in the form of droplets is refined as it passes through the molten slag. The refined metal droplets are collected in a cold hearth apparatus having a skull of refined metal formed on the surface of the cold hearth and protecting the cold hearth from the leaching action of the refined molten metal. A cold finger bottom pour spout is formed at the bottom of the cold hearth to permit dispensing of molten refined metal from the cold hearth. The rate of flow of molten metal through the cold finger apparatus is controlled principally by controlling the rate of melting of the unrefined metal. The metal flowing from the cold finger apparatus is introduced to the upper end of a ceramic melt guide tube. Liquid metal emerging from the lower end of the melt guide tube is atomized by a gas orifice closely coupled to the lower end of the melt guide tube.
Abstract:
A teeming spout has on its inside a plurality of picket-like metal segments (1) separated from one another by slots (2) and is externally surrounded by an induction coil (3). The bottom turn (7) of this induction coil (3) has a downwardly directed pitch equalization piece (8) which provides such that the field acts uniformly on the teeming stream from all sides and therefore it is not deflected.
Abstract:
A free-form, three-dimensional, solid-phase object (30) is produced from droplets (24) of liquid-phase material having appreciable surface tension and well-defined solidification properties. The liquid-phase material is ejected from an ejection head (20) in discrete droplets onto a substrate (98). The temperature, frequency, size, and trajectory of the droplets and the relative speed of motion between the substrate and the ejection head are adjusted to compensate for the physical properties of the liquid-phase material and the heat dissipation characteristics of the growing object to form a desired object (212).