An induction heating apparatus of a plate-like member for arranging a plate-like member having a three-dimensional structure so that it is interposed between a pair of plate-like coils and inductively heating the plate-like member, the pair of plate-like coils having a three-dimensional structure that corresponds to the plate-like member and being arranged to be opposed to each other. The plate-like member arranged between the pair of plate-like coils includes a plurality of surfaces in a predetermined cross section perpendicular to a current that flows through the plate-like coil pair, and each of the coils of the plate-like coil pair is divided into a plurality of turns along the direction in which the current flows for at least each of the plurality of surfaces of the plate-like member.

A heating element and conductive element system may include a heater conductive element and a heating element. The heater conductive element and the heating element may be integral components. The heater conductive element and the heating element may be discrete components. The heater conductive element may be configured for enhanced mechanical fatigue compared to typical conductive element.

A hand-held heating unit is disclosed having a turbine connected to a generator to generate electrical power from a compressed air source. The electrical power produced by the generator is suppled to a transformer to establish a voltage which is in turn used to energize a coil with an alternating current. The current causes a magnetic field to form in the coil that can be used to heat ferrous materials within the coil. A circuit board can control the current and frequency for different applications.

The invention relates to a method and a heating device (1c) for inductively heating a stator (2) or armature (3) of an electric machine, in particular before and during trickle impregnation thereof. In addition, the invention relates to an impregnating device (50) in which this heating device (1c) is integrated. According to the invention, it is provided that the heating takes place inductively by electromagnetic fields of different frequencies. For this purpose, it is provided in the case of the heating device (1c) that it has at least one electromagnetic inductor (18, 21, 24) which is disposed coaxially or axially parallel with respect to the longitudinal axis (7) of the stator (2) or armature (3) and which inductively heats said stator or armature, and that the at least one inductor (18, 21, 24) is designed to generate at least two electromagnetic fields of different frequencies.

An induction heating system for heating a component, the induction heating system having an alternating voltage supply device, a capacitor, a displacement unit, and an induction coil. The alternating voltage supply device supplies alternating voltage to a series resonant circuit which is formed by the capacitor and the induction coil. The displacement unit allows the induction coil to be displaced laterally in at least one direction relative to the component. The capacitor is situated between the displacement unit and the induction coil. A device for the additive manufacturing of a component uses such an induction heating system.

Induction heating extension cables including control conductors are disclosed. An example cable assembly includes: a first plurality of conductors in a Litz cable arrangement; an outer protective layer configured to protect the plurality of conductors from physical damage; and a second plurality of conductors that are electrically isolated from the first plurality of conductors and are protected by the outer protective layer from physical damage.

Induction welding device for variable diameter pipes comprising three inductors configured in the shape of a cam, placed in symmetry in relation to the axial axis of the pipe to be welded, an oscillator connected to each inductor, a mechanical system connected to each inductor, designed to force each inductor to make contact with the pipe by the corresponding degree in relation to the diameter of the pipe at each position, so that the position of the inductors in relation to the pipe changes radially as the diameter of the section of the pipe to be welded also changes.

A method of performing a localized post weld heat treatment on a weld seam in a thin wall metallic body may include attaching thermocouples to the outside surface of the weld seam and covering the weld seam with a thermal insulating blanket. Cooling bands are attached to the outside of the body on both sides of the weld seam. An inert atmosphere enclosure with inlet and exhaust ports is fitted over the weld seam, thermal insulating blanket, and cooling bands. A power supply and control system for an induction coil or coils situated in close proximity to the weld seam are actuated and the weld seam is subjected to a heat treatment without thermally affecting regions of the metallic body adjacent to the weld seam and external to the cooling bands.

A waterwall panel welding apparatus is provided. The apparatus includes an inlet assembly, a welding assembly, an outlet assembly, and a heating system. The inlet assembly is for receiving a plurality of tubes. The welding assembly is for receiving the tubes from the inlet assembly and for allowing the tubes to be welded together to form a waterwall panel. The outlet assembly is for receiving the waterwall panel from the welding assembly. The heating system heats the tubes and operates via magnetic induction.

Fixtures and methods for induction heating of bored parts are described. The fixtures and methods may be used to counter the effects of convective heat transfer and thereby promote a more uniform temperature distribution around a bore of a bored part being heated. The fixture includes a base including one or more locators engaged with the part and locating the base relative to the part, and an induction heating coil supported by the base. The induction heating coil is disposed inside the bore of the part and is inductively coupled to the part. The induction heating coil is wound about a coil axis which is non-coaxial with a bore axis of the bore of the part during heating of the part.