TPT November 2013

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Technology News
46 November 2013
TubeMaster and ScarfMaster
saw blades for efficient
in-line cutting
KINKELDER has developed a smooth
cutting TubeMaster® saw blade for
orbital cut-off applications. Its special
tooth geometry cuts a large range of thin
to thick wall tubes.
“Key features of this TubeMaster ®saw
blade are a special carbide grade and a
high-tech PVD-coating,” said Kinkelder
application engineer Leo Molenaar.
“This, combined with a special cutting
geometry, does not require much force
for chip removal, assuring a milled-like
finish of the cut surface. This special
geometry also reduces vibration when
cutting thin wall (<4mm) tubing, thereby
achieving an excellent blade life.”
This saw blade concept allows use
of one set of blades with medium tooth
pitch to cut tubes with wall thickness
from 3 to 9mm and on some machines
even up to 12mm. For wall thickness
9 to 30mm a coarse pitch is defined.
TubeMaster® saw blades are available
in diameters from Ø300 to Ø420mm for
all types of orbital cutting machines,
such as MTM, Otomills, Elmaksan,
Kusakabe, Linsinger and SMS.
Tubes for oil and gas as well as
structural pipes and hollow sections form
a primary market for TubeMaster® saw
blades. Even high hardness materials
such as X80 can be cut efficiently
thanks to the type of carbide used. The
PVD coating protects the tips effectively
against the high temperatures being
developed during the cutting process.
In case of ID-scarfing in the tube
making process, the internal weld
bead, often about 6mm thick solid steel,
remains inside the tube. During cut-off
this inside wire is caught by the saw,
causing a huge peak load usually on one
saw tooth. This can easily lead to tooth
breakage of the saw blade. Kinkelder
started developing a new saw in 2010,
which resulted in the conception of
ScarfMaster®.
ScarfMaster® is a carbide-tipped saw
blade featuring a very specific tooth
geometry while tips themselves are
made of a highly shock resistant type of
carbide. The teeth are supported by a
saw body with extra strong shoulders,
which give the combination tooth/
body very high stability and fracture
resistance.
“Not only is the blade life of the new
ScarfMaster® considerably longer, it can
also cut 50 per cent faster,” emphasises
Mr Molenaar.
“Due to this, line speed can be
significantly increased. Also, the line
does not have to be shut down as often
to change the saw blades, which means
better uptime. In all regards, the new
ScarfMaster® saws improve productivity
of the tube line and this automatically
reduces cost of production per tube
length. There is already a rapidly
growing number of enthusiastic tube
manufacturers all over the world who
successfully use ScarfMaster® saw
blades for their tube lines.” ScarfMaster®
saw blades are available in diameters
of 400, 450, 500, 560 and 600mm
destined for the production of tubes in
the diameter range of 2.5" to 7" (63.5 to
168mm).
Kinkelder was founded in the
Netherlands in 1945 and grew into one of
the most important producers of circular
saws worldwide with the production and
sales of saws.
Less than 10 per cent of the production
remains in the Netherlands. The rest is
designated for export to approximately
70 countries. Outside the Netherlands,
Kinkelder now has its own sales and
service branches in Germany, the USA,
France, Belgium, Czech Republic, UK
and China.
Kinkelder’s own subsidiaries as well
as their experienced worldwide network
of engineering distributors have their
specialised application engineers
available on call.
Kinkelder BV – The Netherlands
Website:
Tube measurement and testing
TUBE Testing Europe BV has extensive
experience in the field of performing
NDT measurements with its Acoustic
Pulse Reflectometry (APR) technology.
It recently took over these activities
from HPFM BV and so continues many
years of experience in this field.
HPFM BV was the first company
in which this method was applied
internationally in 2008 on straight-
and U-tube heat exchangers, blade
spiral wounded air fin cooling banks,
and especially for the AWR (apparent
wall reduction) among the tube into
tube sheet installations according the
ASME/DIN international procedures.
With modern equipment and a method
which has been honoured by theASTM
(E2906/E2906M-13) the company
can measure, analyse and report any
thermal application in an accurate and
fast, professional manner.
The biggest advantage of this
advanced APR method is the short
turnaround time needed for a large
number of tube measurements to
be done. So the time required, for
example for a heat exchanger which
is out of production, can be minimised
in any area of cost, which gives the
end user a total large financial benefit
including a traceable preventive overall
maintenance schedule.
Tube Testing Europe BV –
The Netherlands
Email:
Website: