11results about "Furnaces without endless core" patented technology

In one embodiment, a method for producing a high-purity copper alloy includes the steps of providing raw materials to a melting furnace and melting the raw materials. The method further includes the step of bubbling an inert gas into the molten copper alloy to form a high-purity copper alloy. In one embodiment, the raw materials have a composition configured to form a molten copper alloy containing at least 50% by weight of copper, and the melting furnace is configured to rotate around a central axis. The embodiment also covers apparatus for producing a high-purity copper alloy and a method for manufacturing the apparatus.

In an aspect, a method of manufacturing a high purity copper-based alloy comprises providing in a melting furnace a feedstock and melting the feedstock. The method additionally includes bubbling an inert gas into the molten copper-based alloy to form the high purity copper-based alloy. Aspects are also directed to an apparatus and a method of fabricating an apparatus for manufacturing the high purity copper-based alloy.

This invention relates to a method for melting and processing, particularly mixing, conductive materials, especially sponge iron, having a high content of gangue and slagging agent, using at least one induction furnace (1) and coupling at least one alternating magnetic field to the material via at least one first coil assembly (4) and at least one second coil assembly (5), the first and second coil assemblies surrounding a melting crucible (2) of the induction furnace (1) having a crucible volume (3) for containing the material, wherein the method comprises melting and stirring the molten material while the first coil assembly (4) and the second coil assembly (5) are operating simultaneously, wherein, particularly during operation of the induction furnace (1), the phase angle of the alternating voltage of the first coil assembly (4) and / or the second coil assembly (5) is adjusted such that, during stirring operation, the phase angle of the alternating voltage of the first coil assembly (4) is at least temporarily offset relative to the phase angle of the alternating voltage of the second coil assembly (5). The invention also relates to an induction furnace (1) for carrying out the method.

A magnetic induction furnace (1) adapted to heat solid or tubular metal billets (5), of various lengths and diameters, made of non-ferrous materials, for example to be extruded, comprises a fixed body or carcass (16) in which there is arranged an electric motor (21) defined by an electric stator (23) into which it is inserted an annular electric rotor (25) connected to a rotor body or tubular support (26) carrying a plurality of permanent magnets (27) arranged so as to define a hollow magnetic cylinder in which there is provided for a cavity (10) adapted to contain a non-rotating billet (5) to be heated; the permanent magnets (27) of the rotor body (26) comprise main permanent magnets (27A) magnetised in the radial direction with respect to such rotor body (25) and auxiliary permanent magnets (27B) magnetised in the axial direction, said magnets (27A, 27B) generating flux lines of the magnetic field (X) directed in depth towards the internal of the cavity (10) adapted to contain the billet (5) so as to improve the heating thereof induced with respect to a conventional magnetic arrangement.

A sample reservoir (104) containing a sample (118), a nozzle (106), and a heated element (108) are arranged in a vacuum chamber (102). An induction coil (114) is located on the outside of the vacuum chamber (102). The heated element (108) is located around the sample reservoir (104) and the nozzle (106). Electromagnetic power is wirelessly transferred from the induction coil (114) to the heated element (108), whereby the heated element (108) is heated. Heating of the heated element (108) causes the sample reservoir (104) and the nozzle (106) to be heated, whereby the sample (118) in the sample reservoir (104) is heated. An atomic beam generated by the heating of the sample (118) is emitted from the nozzle (106).

The present invention relates to silicon wafers and epitaxial silicon wafers. Silicon wafers are provided in which the dopant is phosphorus, the resistivity is 1.2 mΩ-cm or less, and the carbon concentration is 3.5 x 10 15 atoms / cm 3 or more. The carbon concentration near the surface of the silicon wafer is reduced by 10% or more compared to the center depth of the silicon wafer.

To prevent leakage of an electromagnetic field generated by an induction coil.SOLUTION: An induction heating assembly (22) for a vapor generating device (10) includes an induction coil (32) and a heating compartment (24) arranged to receive an induction heatable cartridge (26). A first electromagnetic shield layer (36) is arranged outside the induction coil (32), and a second electromagnetic shield layer (46) is arranged outside the first electromagnetic shield layer (36). The first and second electromagnetic shield layers (36, 46) differ in one or both of their electric conductivity and their magnetic permeability.SELECTED DRAWING: Figure 1

A magnetic induction furnace configured to heat solid or tubular metal billets, of various lengths and diameters, made of non-ferrous materials. The furnace includes a fixed body in which there is arranged an electric motor having an annular rotor rotatably disposed in a stator. The annular rotor is joined to a rotor body carrying a plurality of permanent magnets arranged so as to define a hollow magnetic cylinderhaving a cavity configured to contain a non-rotating billet to be heated. The permanent magnets of the rotor body comprise main permanent magnets magnetized in the radial direction with respect to such rotor body and auxiliary permanent magnets magnetized in the axial direction. The permanent magnets generate flux lines of a magnetic field directed inwardly, towards an interior of the cavity configured to contain the billet so as to improve the heating thereof.

Disclosed herein is a device for manufacturing a single crystal comprising a furnace that includes a furnace wall; a quartz tube disposed concentrically within the furnace wall; an induction coil disposed in an annulus between the quartz tube and the furnace wall; a crucible disposed at a bottom surface of the furnace within the quartz tube; where the crucible includes a wall extending upward from a bottom crucible surface; and a refractory lining being disposed in an annulus between the quartz tube and the crucible; where a portion of the refractory lining has a different composition, property, geometry, or a combination thereof from the remainder of the crucible.

This invention provides a small, efficient, and lightweight electromagnetic shielding structure that reduces leakage of the electromagnetic field generated by the induction coil, thereby providing a smaller induction heating assembly and, consequently, a smaller steam generation device. [Solution] An induction heating assembly (22) for a steam generating device (10) includes an induction coil (32) and a heating compartment (24) arranged to receive an induction-heatable cartridge (26). A first electromagnetic shielding layer (36) is located outside the induction coil (32), and a second electromagnetic shielding layer (46) is located outside the first electromagnetic shielding layer (36). The first and second electromagnetic shielding layers (36, 46) differ in their conductivity and / or their magnetic permeability.

An induction crucible furnace includes a fireproof crucible and a coil including an outer wall and is configured to extend around the crucible. The coil includes a plurality of coil portions arranged one above the other in a longitudinal direction of the coil. An insulation is positioned between each of the plurality of coil portions and a plurality of magnetic return elements are positioned on the outer wall of the coil and are configured to extend the longitudinal direction of the coil. The insulation includes a plurality of elongated pouches filled with a pourable material.