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Inside Hydraulik – The Official WATZ Hydraulik Newsletter
WATZ Hydraulik. Due to the very special circumstances of the
project, WATZ was integrated in the planning and construction
phases from the very start. Working closely with Eisenmann’s
development department, WATZ was able to develop optimum
solutions for this highly sensitive area of application. WATZ
provided the entire hydraulics station for the shuttle kiln. The
power unit, installed on a special platform, was charged with
opening and closing the shuttle kiln’s lift gates, which weigh
some 18,000 kilograms. Each lift gate is operated by a separate
power unit. To ensure operating safety, the power units are
switched to the alternate lift gate.
The lift gates themselves are raised and lowered by a
special chain hoist. When lowered, the lift gate touches down
on special rollers and is then pulled up to the furnace chamber
by way of additional horizontally installed, unidirectional
cylinders. This towing action must occur under a specifically
predetermined amount of pressure, as the incineration
process can potentially cause an increase in pressure of up
to +300 mbar. Special safety valves prevent excess pressure
inside the chamber. Furthermore, pressure reservoirs have
been integrated to prevent pressure peaks. In the very unlikely
event of hydraulic system failure, full closure of the lift gates
is nevertheless guaranteed. Moreover, the gates are also
protected against sudden collapse caused by an unforeseen
loss of pressure, as it is possible to open only one gate while
the system is in operation.
With all of these measures in place, this WATZ system is
able to guarantee maximum operational safety. Not bad for an
application that is in use on 350 days a year, with three shifts per
day! WATZ technicians were naturally on hand during system
start-up and visit the site regularly for service and maintenance
calls. System documentation was made available to the client
in Russian, English and German language.
Pictures: Eisenmann AG
Innovative core sand treatment for foundries
Successful plant engineering companies
rely on hydraulics from WATZ
More than 100 core sand treatment plants is a fact that
speaks for itself: K & W is one of the most successful plant
engineering companies in this field and its reputation has been
built on quality and constant innovation since its beginnings
in 1907. Its product offering ranges from individual casting
machines to complete – fully or semi-automated – casting
plant, including core sand treatment and regeneration.
Casting machine performance ranges from 10 to 330 casts/
hour. In exactly the same way as Watz, K & W always focuses
on meeting its customers‘ requirements. For this reason,
the casting plant is always tailored to the customer‘s special
needs. The average technical availability of K & W is over
98%. High-precision humidity control and weighing equipment
together with robust cooling and mixing design
ensures a consistently high level of sand quality. All K & W
products are characterised by innovation, expertise and
experience combined with sound, high-quality design. And
in order to provide its customers with the trusted high quality
in all areas of plant engineering, K & W also relies on hydraulic
systems from WATZ.
This is true for its projects all over the world. In Brazil, for
example, it built a modern casting facility for an automotive
components supplier which has been manufacturing motors
and clutch systems for many well-known car makers in
Curitiba/Paraná Brazil ever since. WATZ supplied the hydraulic
power systems for this project. The equipment supplied
includes hydraulic power units with a tank volume of up to
32,000 litres.