TPT July 2011

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112 July 2011 ›
Cutting, Sawing & Saw Blades
Advantages of Kanefusa saw
blade for flying cut off machine
FLYING cut off machines for tube mills
often aim to cut off welded tube (ERW) with
cutting speed of around 200-300m/min.
These days, some users operate machines
with over 400m/min cutting speed for
volume manufacturing.
The faster cutting speed, unstable
material holding and coolant inside the
tube invariably make the cutting conditions
very tough for sawblades. Kanefusa has
developed a newly designed saw blade for
flying cut off machines and has a growing
reputation for its quality across the globe.
It is used most often for flying cut off
machines but the company has two types
of saw blades: one for high speed cutting
Vc=350-600m/min and the other for high
tooth load cutting Sz=0.1-0.2mm/tooth.
For the high-speed cutting condition,
wear-resistance is a key point. Kanefusa’s
original coating gives sawblades an
intensive effect against edge wear.
The coated blade performs better for
over 300m/min cutting speed. The blade
teeth are also heat-crack resistant. In
sawing tube on ERW, the high temperature
cutting edge is squirted with coolant
directly.
As the edge is repeatedly heated and
cooled, it expands and shrinks, thereby
increasing the chance of heat cracking.
As these fine cracks pose a high risk of
causing bigger edge chippings, the edge
should be strong against heat cracking. All
Kanefusa blades for this application are
made with a specially selected highly heat
crack resistant carbide.
Lastly, for high tooth load sawing, a
well-designed tooth configuration and high
quality carbide are used to avoid edge
chipping caused by high load.
Together with the above advantages, the
company will study each sawing condition
for the customer and design the sawblade
that will offer the best performance from
its products.
Kanefusa Corporation – Japan
Email:
Website:
High precision
laser cutting
MAZAK 3DFabri Gear, fromYamazaki Mazak
Optonics, is a 3D laser cutting machine for
large tube and profile processing. It allows
non-stop cutting of different shapes with a
single machine set-up, using a universal
focal torch (7.5" and 5") to obtain the right
angle inclination in every point. This ensures
a perfect match between cut parts having
different shapes, and realises a proper
chamfering for welding operation. This
technical feature allows efficient processing
on structural parts for carpentry construction.
The machine is equipped with four chucks
to process long finished parts, automatic
and compact centring clamps to minimise
material scrap, and both side longitudinal
movement. The automatic loading/unloading
system is able to process tubes and profiles
with maximum length up to 15m, maximum
tube diameter 323mm, and profiles with a
maximum section of 250x250mm.
Yamazaki Mazak Optonics – Belgium
Fax: +32 2 7253320
Website: