An applicator machine and a process for heating and coating a section of pipeline. The applicator machine includes a frame configured to rotate about a section of pipeline to be heated and coated, rotating means operable to rotate the frame, and coating material applicators induction coils and radiant heaters mounted on the frame and rotatable therewith. The induction coil is configured to heat a section of pipeline adjacent to the induction coil to a coating material application temperature. The radiant heaters are configured to heat factory-applied coatings. Each coating material applicator sprays coating material through an aperture in a respective induction coil. The applicator includes an enclosure configured to surround a section of pipeline and provision for evacuating and collecting waste coating material. The coating material applicator may be configured to spray powder coating material, such as fusion bonded epoxy powder material and/or chemically modified polypropylene powder material.

An applicator machine and a process for heating and coating a section of pipeline. The applicator machine includes a frame configured to rotate about a section of pipeline to be heated and coated, rotating means operable to rotate the frame, and coating material applicators induction coils and radiant heaters mounted on the frame and rotatable therewith. The induction coil is configured to heat a section of pipeline adjacent to the induction coil to a coating material application temperature. The radiant heaters are configured to heat factory-applied coatings. Each coating material applicator sprays coating material through an aperture in a respective induction coil. The applicator includes an enclosure configured to surround a section of pipeline and provision for evacuating and collecting waste coating material. The coating material applicator may be configured to spray powder coating material, such as fusion bonded epoxy powder material and/or chemically modified polypropylene powder material.

A magnetic field generation device according to an embodiment includes a plurality of iron cores arranged at gaps from each other, coils and for energizing an R-phase current, coils for energizing an S-phase current, and coils for energizing a T-phase current. The magnetic poles of each iron core are arranged along a predetermined direction to constitute first to sixth magnetic pole groups, respectively. The coils are wound around each of the first to sixth magnetic pole groups.

Disclosed is an air-cooled induction heating device for inductively heating a graphite susceptor and subsequently melting a metal contained within the susceptor. The device comprises a crucible for receiving a susceptor therewithin, an induction coil spirally encircling the crucible such that, no contact is observed therebetween, and a power supply source for powering the induction coil wherein, powering the induction coil results in the inductively heating up and subsequent melting of the susceptor.