Induction Heating

MANNINGS USA has developed a method of rapidly expanding horizontal joint turbine bolting. This process utilises an inductor placed in the bore of the bolt or stud. A medium frequency inductive field sets up a low voltage high current within the bolt itself, causing rapid heating. Site RequirementsIf two machines are to be used simultaneously, the following must be available on each side of the shell. Power

Each machine requires 415 volt, 3 phase, 150 amp & service Water. Each machine requires one water supply which can provide 12 gallons per minute at 40psi. Please ensure that adequate drainage facilities are available.

Support - Millwright support as required.Area 27" x 54" footprint.OperationOperation technicians utilise induction machines to expand the bolting on both sides of the turbine simultaneously or in succession.

The time frame for expanding all heated bolting ranges from four to twelve hours, depending on the shell design and the number of machines used. Safety MANNINGS inductive method of expanding the bolting has the following safety benefits over cartridge or gas heating:Voltages are considerably lower than those of cartridge heaters. No external heat source is used, thereby minimising the incidence of skin burns, the inductors stay cool. Rapid expansion eliminates the need for physical force often needed in traditional methods to break the nuts free. No combustibles are used in the induction method.