Disclosed is a heater assembly for accommodating and heating an aerosol generating article, the heater assembly including: an accommodation portion configured to accommodate an end portion of an aerosol generating article; a heating portion arranged to surround another portion of the aerosol generating article; and a combining portion configured to combine the accommodation portion and the heating portion and including engineering plastic, wherein the accommodation portion, the combining portion, and the heating portion are arranged along a longitudinal direction of the aerosol generating article and form an accommodation space in which the aerosol generating article is accommodated.

A three-dimensional (3D) metal object manufacturing apparatus is equipped with a magnetic field generator to form a magnetic field selectively about a nozzle from which melted metal drops are ejected. The drops ejected in the presence of the magnetic field have their velocities reduced from the initial velocity at which they are ejected. The reduced velocity increases the time in flight of the drops before they impact their landing areas. The increased travel time enables the melted metal drops to oxidize sufficiently that they bond less tightly than the drops ejected without passing through the magnetic field. Thus, the apparatus can form metal support structures that adhere less tightly to the part portions of the object so they can be more easily removed after printing of the object.

An induction coil and method for heating susceptors within a portion of a living body, include an effective diameter that is determined based on a cross-sectional area of the induction coil, a length determined along an axis of the induction coil that is orthogonal to the cross-sectional area, and a ratio of the length to the effective diameter that ranges between 0.25 and 0.75, such that a magnetic field is generated that ranges between 1 kA/m and 40 kA/m with an input frequency that ranges between 50 kHz and 1 MHz

An induction coil and method for heating susceptors within a portion of a living body, include an effective diameter that is determined based on a cross-sectional area of the induction coil, a length determined along an axis of the induction coil that is orthogonal to the cross-sectional area, and a ratio of the length to the effective diameter that ranges between 0.25 and 0.75, such that a magnetic field is generated that ranges between 1 kA/m and 40 kA/m with an input frequency that ranges between 50 kHz and 1 MHz

An extruder for a metal material includes a cylinder having a receiving space in which a solid metal material is provided, a nozzle extending from a lower end of the cylinder, an upper coil provided on an outer surface of the cylinder and melting the solid metal material to form a liquid metal material, and a first lower coil provided on an outer surface of the nozzle to control an extruded shape of the liquid metal material.

An extruder for a metal material includes a cylinder having a receiving space in which a solid metal material is provided, a nozzle extending from a lower end of the cylinder, an upper coil provided on an outer surface of the cylinder and melting the solid metal material to form a liquid metal material, and a first lower coil provided on an outer surface of the nozzle to control an extruded shape of the liquid metal material.

Aspects and embodiments of inductive heating systems are described. In one embodiment, the system includes a manifold assembly with number of manifold pipes that are connected to a manifold plate. An inductive coil is around the manifold assembly. A control circuit is electrically coupled to the inductive coil and to a power supply to inductively heat the manifold pipes of the manifold assembly using the inductive coil.

Aspects and embodiments of inductive heating systems are described. In one embodiment, the system includes a manifold assembly with number of manifold pipes that are connected to a manifold plate. An inductive coil is around the manifold assembly. A control circuit is electrically coupled to the inductive coil and to a power supply to inductively heat the manifold pipes of the manifold assembly using the inductive coil.

A system and method for repairing a blade are provided. The system includes an induction heating coil configured for heating a platform and slash face of the blade. The induction heating coil extends under the platform and is adjacent to the slash face to provide substantially uniform localized heating to both the platform and slash face of the blade. The induction heating coil is configured so that the platform is visible during a repair or welding operation.

A system and method for repairing a blade are provided. The system includes an induction heating coil configured for heating a platform and slash face of the blade. The induction heating coil extends under the platform and is adjacent to the slash face to provide substantially uniform localized heating to both the platform and slash face of the blade. The induction heating coil is configured so that the platform is visible during a repair or welding operation.