TPT March 2017

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T E CHNOLOG Y
42 MARCH 2017
Ten-roll tube straightening machines
BÜLTMANN has been awarded an order
for a straightening machine by an Indian
manufacturer of precision tubes.
The machine, equipped with modern
straightening technology, will be used
for the production of precision tubes
for the automotive industry. The tube
specifications are diameter 45 to 175mm,
wall thickness 3 to 15mm, length 4 to
12m, and material strength up to 1,000
MPa. The machine will also meet the
requirement of straightening accuracy of
< 0.3mm/m.
The straightening machine is equipped
with charging and discharging devices
which have been partially tailored to
the customer’s demands. The specific
design has been elaborated in the
project phase, in close collaboration with
the customer. The fully automatic tube
bundle separation, for example, ensures
high manufacturing flexibility in-line with
the customer’s existing tube production
line.
Bültmann GmbH – Germany
Website:
Cutting heavy
ID scarf
GEBRUBER Lennartz GmbH & Co KG,
Germany, is a manufacturer and supplier
of carbide-tipped circular saw blades for
the ferrous and non-ferrous industry. It
has announced a new product from the
ECOmax family. The ECOmax circular
saw blade is a new development and is
customised for cutting tubes and profiles
with heavy ID scarf on flying cut-off units.
Previously, conventional blades were
damaged after only a few cuts because
they cut the high strength weld bead
inside the bottom of the tube. The service
life of the blades was poor and the cost
per cut was high, resulting in a cutting
application that is not economical.
Because of its special tooth form and
cutting geometry, and in combinationwith
a new proprietary coating, the ECOmax
saw blade is suitable for this application.
This new design works successfully on
single head machines as well as on twin
saws with the simultaneous operation of
two saw blades, to meet the customer’s
requirements and decrease the cost per
cut.
Successful trials and on-going
production usage, together with target
customers and machine manufacturers,
have shown the ECOmax blades achieve
7m of material removal on welded tubes
with wall thickness up to 14mm.
Further wear life tests and enhance-
ments are planned to improve the
performance further. Using the ECOmax
blade is an advantage for every
application with heavy ID scarf.
Gebr Lennartz GmbH & Co KG –
Germany
Email:
Website:
C O N T R A S T
• HSS blades
• Friction circular saw blades
• Knives for guillottine cut-off
• Tools for slitting lines
• Impeder cores
• Fiberglass tubes
• Complete impeders
• Copper inductors
• Hard metal inserts
• Carbide base plates
• Tool holders
• Cutting rings
• Rolls for tubes • Capacitors for H.F. welders • Tube’s cleaners
INSIDE
SCARFING TOOLS
Tel: ++39 0421 272337 Fax: ++39 0421 272337
Via Umbria, 15
30026 Portogruaro - VE - Italy