Mannings USA (UK) PLC were able to use induction heating for
Innogy Operations and Engineering at their TSG Workshop in
Ferrybridge where overhaul of a turbine rotor for the Didcot A
Power Station in Oxfordshire involved removal of erosion shields.
The technical Engineer for Innogy said, "induction heating has
proved to be an ideal solution and the controllability and
accuracy of the process make it of considerable interest for
future work".

+ SERVICES

The use of induction heating is of particular advantage when
used on the blades of a turbine and alternators as the heat can
be accurately controlled and can be directed to exactly where it
is needed. This prevents the blades from overheating and avoids
local hot spots which can result in hardening and cracks in the
blades.

Mannings USA (UK) PLC were invited to propose a suitable means
of brazing by means of induction heating and experimentation
began to design a coil which would provide adequate heat
distribution and control. They produced an induction heating coil
which was designed to suit the curvature of the blade and could
evenly distribute heat over the small 1½ x 1½ inch area. A
thermocouple was attached to the blade and the temperature
was raised to 630 degrees centigrade in ten minutes and held at
this temperature.
Induction heating has quickly become the standard in the industry
since its introduction. Mannings USA (UK) PLC is the preferred vendor
of power generation specialist worldwide in the field of induction
heating. The Induction Nut Heating System utilizes the same variable
frequency inductive equipment proven in our Induction Bolt Heating
System which introduces a fast and evenly distributed heat to the
nut. The rapid expansion of the nut during the induction process is
due to a distributed heat evenly around the entire fastener
circumference.
Mannings USA (UK) Services
BOLT
HEATING
INDUCTION
NUT HEATING SERVICE
INDUCTION NUT HEATING SERVICE
EROSION SHIELD REMOVAL USING INDUCTION
INDUCTION BRAZING
EROSION SHIELD REMOVAL
INDUCTION BRAZING
At RWENPower Tilbury Power Station Mannings USA (UK) PLC used
patented induction heating equipment to safely and speedily remove
the massive steel bolts which secure the HP and IP steam turbine
covers.

The HP turbine has 40 bolts which are each 5 inches in diameter and
the turbine had not been opened up for at least four years.The
Turbine Mechanical Engineer at the Tilbury Power Station said “the
main advantage to us of using induction heating is the safety aspect.

The alternative is to insert a heated carbon rod into the bolt and this
rod has to be removed by hand while it is still glowing red hot.
Because of the working environment and high temperatures involved
we consider this to be extremely dangerous and we welcome this new
development”.
07802 977623
01704 229625
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Mannings USA (UK) PLC
Unit 5 Slaidburn
Crescent
Southport PR9 9YF

ADDRESS

info@manningsusa-uk.com
07802 977623
(fax) 01704 227450
01704 229625

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