A heating device and/or method to heat a slab, and in particular its edges, by electromagnetic induction, comprising including an electric coil and a magnetic concentrator associated with the electric coil.

A compact heat treatment line can include a short heating zone capable of rapidly bringing a metal strip to a suitable solutionizing temperature through the use of magnetic rotors, such as permanent magnet magnetic rotors. A fast and efficient soaking zone can be achieved as well, such as through the use of magnetic rotors to levitate the metal strip within a gas-filled chamber. Magnetic rotors can further levitate the metal strip through a quenching zone, and can optionally reheat the metal strip prior to final coiling. Magnetic rotors used to heat and/or levitate the metal strip can also provide tension control, can facilitate initial threading of the metal strip, and can cure coatings and/or promote uniformity of coatings/lubricants applied to the metal strip without overheating. Such a heat treatment line can provide continuous annealing and solution heat treating in a much more compacted space than traditional processing lines.

A non-contact heating apparatus uses a series of rotating magnets to heat, levitate, and/or move metal articles therethrough. A first series of rotating magnets heats the metal article to a desired temperature. A second series of rotating magnets levitates the metal article within the heating apparatus and maintains desired tension in the metal article, including urging the metal article through the heating apparatus. The heating apparatus can extend sufficiently far to soak the metal article at the desired temperature for a desired duration. The rotating magnets can be positioned outside of an electrically non-conductive, heat resistant chamber filled with an inert or mildly reactive gas, through which the metal article passes in the heating apparatus.

A system includes a pipe heater configured to heat spoolable pipe to provide a heated spoolable pipe and a pipe re-rounder configured to re-round the heated spoolable pipe to provide a rounded spoolable pipe. The system may also include a controller configured to control the pipe heater and the pipe re-rounder.

A system includes a pipe heater configured to heat spoolable pipe to provide a heated spoolable pipe and a pipe re-rounder configured to re-round the heated spoolable pipe to provide a rounded spoolable pipe. The system may also include a controller configured to control the pipe heater and the pipe re-rounder.

A method of removing a foil shield from a cable. The method includes: positioning the cable proximate a heating source; heating the foil shield in a designated area to weaken the foil shield; and removing an outer insulation of the cable and the foil shield after the foil shield has been heated.

An apparatus and a method for rapidly heating cold-rolled strip steel (10). The apparatus for rapidly heating cold-rolled strip steel (10) comprises a heating zone, a soaking zone, and a cooling zone, and the heating zone is sequentially divided into a first heating section (1), a second heating section (2), a third heating section (3), and a fourth heating section (4) along a moving direction of the strip steel (10) to be heated, the first heating section (1) and the fourth heating section (4) being radiant heating sections, and the second heating section (2) and the third heating section (3) being inductive heating sections. The method for rapidly heating cold-rolled strip steel (10) uses the apparatus for rapidly heating cold-rolled strip steel (10) to heat the strip steel (10).

A transverse flux electric induction heating apparatus is provided with a pair of transverse flux inductor assemblies where the inductor in each one of the pair of assemblies is formed from a pair of continuous flexible cables disposed within movable roll channels in roll assemblies that are used to adjust the transverse length of the inductor across the edge-to-edge transverse of a workpiece moving between the inductor in each one of the pair of assemblies and/or to adjust the pole pitch between transverse inductor lengths of each inductor in the pair of assemblies.

Disclosed are induction heating cells comprising tensioning members with non-magnetic metal cores. Also disclosed are methods of operating such cells, for example, to process composite parts. The non-magnetic metal cores of the tensioning members provide excellent tensile strength. Furthermore, the non-magnetic metal cores allow forming long tensioning members leading to large induction heating cells for processing large composite parts, such aircraft fuselage parts, wing parts, and the like. The diameter of these non-magnetic metal cores is less than the induction heating threshold for magnetic fields used during operation of the cells, which ensures limited or no interaction of the cores with the magnetic fields. The cores can be arranged into a tensioning member extending through and compressing the die of an induction heating cell. When multiple cores are used, these cores are electrically insulated from each other, e.g., using an insulating shell or spacing these cores away from each other.

In preferred embodiments, a heating coil is provided that includes at least a set of heating conductors, one of which is arranged at a side of a work and the other one is arranged at an opposite side of the work. In addition, a plurality of connecting conductors are provided to connect an end of one of the heating conductors with an end of the other heating conductor, wherein each of the heating conductors is connected with at least two connecting conductors. The connecting conductors extend from an end of each of the heating conductor in a different direction from each other. In the preferred embodiments, the heating coil has a simple structure that enables an even heat treatment to a work in a width direction.