TPT November 2016

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46 NOVEMBER 2016
T E CHNOLOG Y
Precision pipe end heating
THE ability to provide uniform heating
with a flexible and robust induction
stress relieving unit that offers the
highest quality has always been the key
benchmark for the Inductotherm Group.
The Inductotherm stress relieving unit
called Iross offers customers precise
heating of the heat affected zone (HAZ)
exiting the coil, giving no need for
extended soak time in order to reach the
temperature tolerance required. This is
achieved by using a patented system
called Fluxmanager™, developed by
the Inductotherm Group to improve
shortcomings of using conventional
stress relieving systems.
FluxManager™ utilises a shaped
intensifier to concentrate power on the
workpiece.
The Fluxmanager™ coil is a closed
end coil giving a superior control of
heating at the cold end, preventing
under heating and cold spots. The
intensifier greatly improves electrical
efficiency and power factor compared to
open coils.
With the necessity of processing pipes
of different diameters and walls and
the specifics of the real-life industrial
environment, it is not uncommon to
have a non-symmetrical positioning of
the heated pipe inside the induction coil.
Fluxmanager™ was designed to
compensate for the off centred aligned
pipe making no difference to the heating
and final exiting temperature.
By including programmable frequency
this allows even greater control of the
HAZ and no overheating of the skin,
reducing the normal high peaks of
temperature during initial start-up of the
heating.
Advantages are achieved using
Fluxmanager™ technology by addres-
sing the following areas: improved
equipment flexibility, repeatability and
robustness with reduced sensitivity
to real life plant process disturbances
and imperfections; elimination of the
use of “robber” rings; ensuring superior
radial, circumferential and longitudinal
temperature uniformity; and reduction
of an external magnetic field around the
induction coil.
The Iross stress relieving machine
is available in two formats, single
phase and three phase, both designed
specifically for heating a wide variety
of tubular products while delivering
the industries best heat affected zone
according to Inductotherm.
Both systems also utilise recipe-
driven programming, which inc-
orporates a PID control to manage the
heating curve and the soaking time if
required.
These systems utilise patented
Fluxmanager™ technology yielding
superior temperature uniformity
compared to conventional designs.
The three phase heating system
features programmable variable fre-
quency control, allowing precise heating
on a variety of pipe sizes and wall
thicknesses.
Inductotherm Heating & Welding –
UK
Email
Website:
Manchester Tool & Die
exhibiting at Fabtech
MANCHESTER Tool & Die, Inc (MTD)
is exhibiting at Fabtech 2016 (Booth
N7108), 16-18 November at the Las
Vegas Convention Center in Las
Vegas, USA.
On display will be MTD’s Model
M71-E-6 electric tube end forming
system for tubes up to 1½" in diameter.
This machine is claimed to offer up to
a 40 per cent faster cycle rate than
comparable hydraulic machines.
A servo flag stop system is standard
for these machines for quick, tool-free
flag adjustments, which helps achieve
quicker and more accurate set-ups.
The electric tube end-forming machines
also provide easy access for tooling
changeovers and service, energy
savings and noise reduction.
Manchester Tool & Die supplies tube
end-forming equipment and tooling to
a variety of industries, with standard
machines ranging from 3/16" to 3" OD
capacities. Machines and parts can be
manufactured for special applications.
The company also provides steel
fabricating and production machining
services.
Manchester Tool & Die, Inc – USA
Fax: +1 260 982 4575
Email:
Website: MTD’s M71-E electric tube end-forming
machine