stories on hard material matters - Ceratizit S.A.

Maximum quality requirements – surface quality is
decisive
Aerodyn’s quality requirements are extremely high. The
customers’ specifications concerning both strength
and form are very precise, in fact a surface roughness
of R a 1.6 is often demanded. Furthermore the weight
of the single propeller blades should not differ from
each other. With a given weight of the blades of 3.8
tons the tolerance is only 6 kilos, in a very fast vessel
the difference in weight must not exceed one kilo. For
every order independent audits are carried out before
the products are released.
Productivity increase with CERATIZIT tools
In recent years several projects in the field of cutting
tools have been realized in close cooperation between
SHIP BUILDING TRILOGY 1/3 - AERODYN
the Swedish Aerodyn sales and the CERATIZIT Energy
& Transport segment. The CERATIZIT inserts -M31 CTC
5235 with HyperCoat-coating have, for instance,
been applied now for several months. And the results
are stunning. “Applying the CTC5235 inserts we have
been able to increase the cutting depth by 50% and
simultaneously double tool life. I don’t think we need to
go into more detail here“, says a satisfied Petri Piippo,
production manager at Aerodyn.
Lars Andersson, Aerodyn managing director, on the
question about the particular advantages of working
together with CERATIZIT states: “Quality, service and
market-adapted prices are the characteristics of
CERATIZIT. We also appreciate the possibility to be able
to order online via the E-TechStore at CERATIZIT.”
The propeller blades are characterised by a hydrodynamic wing profile: blades weigh between 80 kilo and 5 tons. Propelling screws for ice-breaking
vessels are normally made of stainless steel.
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