TPT January 2009

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January 2009 56 ›
The company’s wide range of tube mills
offers the latest features including quick
change mechanisms, helical gear boxes
for distribution of high efficiency power,
oscillating type OD based cutting tools,
inline straighteners (19 roll), and SG cast
stands for excellent damping properties. An
online stretch-reducing mill is available for
small diameter tubes.
Gallium can also supply double mandrel
uncoilers, shear and welders, horizontal
accumulators, end facing machines, tube
push pointers, draw benches and tube
straightening machines.
The company has supplied equipment to
29 countries including USA, UK, Japan,
Australia, Brazil, Iran, Egypt, Malaysia,
China, Taiwan, Thailand, Oman, Jordan,
Zimbabwe, and Pakistan.
Website:
Grind Master, India, is the manufacturer of a
wide range of machines for metal finishing.
Established in 1984, the company exports
its machines through MK International,
and is committed to providing complete
solutions, including tools, machines and
processes.
The company manufactures a range of
centreless machines, including LMCL
models with fixed vertical belt heads, used
by furniture manufacturers and fabricators
of railing and balustrade. Grind Master also
produces the sophisticated FH series, used
by makers of stainless steel tube, hard
chrome bar and hydraulic cylinder.
Various models are offered, from heavy
grinding high stock removal applications to
super finishing applications to achieve 0.05
micron Ra. The machines are modular and
configured to suit individual requirements.
The design of the pneumatically floating
type belt grinding head ensures uniform
grinding pressure, even on bent tubes.
Advanced features, such as automatic
tube size setting and auto wheel wear
compensation, make the machines highly
user-friendly and process-controlled,
ensuring consistency in finishing results.
Group offers a special service in remote
mode called teleservice. This allows the
company’s technicians to directly access
the welding unit installed at the customer’s
plant.
Website:
Framag offers state-of-the-art, high-speed
carbide circular sawing machines. Features
of the sawing machines, which are tailored
to specific requirements, include precise
cutting quality, low tool costs, high cutting
capacity, and robust and durable design.
The range of workpiece dimensions are
square from 70mm to 200mm and rectangle
130 x 260mm, in materials including
alloyed and unalloyed steel, carbon steel
and tempering steel. The diameter of saw-
blades is from 710mm to 910mm, with
cutting speeds up to 250m/min, and length
of cut pieces from 100mm to 600mm.
Website:
Gallium is an ISO 9001:2000 approved
company with 20 years of experience
in design and construction of advanced
tube mills and finishing machines. The
company’s product range is well established
in the tube industry and includes high
speed forming cold saw cut-offs, automatic
bundling machines, multi-tube high-
pressure hydrotesters and universal forming
mills.
At Boru 2009, Emmedi (a division of the
Saet Group) will present its new 250kW
output solid state welder, based on a Mosfet
inverter up to 450kHz. The new welder is
composed of units including transformer,
power supply, welding head, cooling system
and control desk. The power supply is a
three-phase full bridge thyristor rectifier.
Proper filters are inserted in order to reduce
the harmonic components that may affect
the welding process. Included in this unit
is a system control board communicating
with the inverter through optical fibres. The
inverter is a current fed type, composed of
a number of modules (each power rated
at 25kW) connected in parallel: the output
oscillating circuit is directly connected to
the inverter.
The correct protection (hardware and
software) has been implemented both on
the single module and on the whole system
to limit component failures. The modular
structure and complete diagnosis system
allows quick and easy maintenance in
order to reduce production stops. A special
digital control system has been developed
for optimum phase locking (and for an
efficiency increase) with the possibility to
follow the change of frequency due to load
variation, at any working condition.
For a quick and cheap solution in case of
technical problems and for a reduction
of possible onsite intervention, Saet
Emmedi (Saet Group)
Italy 10-E105
 Emmedi’s new 250kW output solid state welder
Framag GmbH
Austria 11-C113
 Framag’s KKS800 sawing machine
Gallium Industries Ltd
India 9-D117
Grind Master
India 11-C103
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