TPT May 2015

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Technology News
May 2015 53
Tube straightening
VIOLI Srl, a specialist in the design and
production of industrial machinery for
the manufacturing of tubes and wires,
has developed a line of straightening
machines for metal profiles, both circular
and complex, that includes the MRT,
MRP and MRF series.
The MRT series for tubes and bars
is equipped with straightening groups
consisting of hyperbolic pairs of rollers
obliquely mounted with an inclination
opposed to each pair. The orientation of
the axes, combined with the hyperbolic
geometry of the rollers, allows the profile
to rotate forward.
All the rollers are mounted on
motorised and independent supports,
flowing within bushings that allow the
operator to modify the height and the
angle of the system. Acting on the
vertical axis is possible to adapt the
straightening machine to different
diameters, and to correct the line of the
advancement of the profile in order to
create a process of metal stressing and
to get products perfectly straight.
The MRT series includes three
models: MRT5 for tubes and bars with
diameters from 3 to 11mm; MRT5M
for diameters from 10 to 30mm; and
MRT5M50 for 25 to 50mm.
The MRP series products are designed
to straighten square, rectangular or
complex profiles, hot or cold drawn.
The devices consist of single or double
straightening groups of motorised rollers,
adjustable in height with a decimal
display system.
Acting on the vertical axis is possible
to correct the line of the advancement of
the profile, in order to achieve perfectly
straight products. Simply replacing the
traction rollers allows processing of
almost all the profiles included in the
working range. The MRF series devices
are managed by PLC, and are designed
to straighten tubes and bars made of
steel or other materials.
Violi Srl – Italy
Email:
Website:
Fusion
machines
THERMOPLASTIC fusion machines
expert McElroy has opened an office
and demonstration facility in Bangalore,
India, devoted to sales, rentals and
technical service.
“We see a tremendous need in India
for better infrastructure to help grow its
economy and improve its citizens’ daily
lives,” said Peggy Tanner, executive
vice president of international market
development at McElroy. McElroy’s
fusion machines are used to join
polyethylene pipe in potable water,
sewer, chemical, compressed gases and
low-pressure natural gas applications.
The company also manufactures
machines to fuse polypropylene pipe,
which is used in a variety of indoor
plumbing systems.
McElroy – USA
Email:
Website:
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