Paper Technology International 2024 - Journal - Page 63
PAPERTECHNOLOGYINTERNATIONAL
pulper to winder
RRICHTER:From
your partner in the paper industry
Sven Bosch, Sales Director, Richter GmbH & Co. KG
INTRODUCTION:
Company Richter is a family business that was founded in 1971 in Hürtgenwald-Horm near Düren (Germany) as a repair workshop
for the paper industry by Wolfgang Richter. Since its foundation, Richter has worked primarily as a service provider in mechanical
engineering almost exclusively for the paper industry. In the initial phase, Richter’s focus was primarily on stock preparation, but then
expanded to include paper machines with a focus on rolls.
Figure 1: Regeneration, Repair and new manufacturing of
parts or complete aggregats of pulp & reject (independent of
manufacturer).
Over the past 50 years, the Richter Group has grown
continuously and today produces at 3 sites in Düren (DE), Karhula
(FI) and Hürtgenwald-Horm (DE). Despite all this growth, Richter
still sees itself primarily as a service partner and extended
workbench for their customers, with whom they endeavour to work
in partnership to solve any problems economically, from pulpers to
rewinders.
Since its foundation, Richter has continued to specialized
in carrying out high-quality repairs and overhauls. We refer to
optimizations in the repair of components, units and rolls and call it
Richter Retro昀椀t.
Retro昀椀t as a company philosophy:
Our primary aim is always to repair defective rolls, units and
components from a wide range of manufacturers at low cost and to
a high standard. The quality of our repairs, overhauls and new parts
is in many cases more durable and therefore of higher quality than
those from the original manufacturer due to the use of customized
materials.
The Richter retro昀椀t philosophy is exactly what is generally
referred to today as sustainability. It is not only practiced by Richter
for its customers, but has also been a guiding principle for its own
production sites since the company was founded.
Sustainability through retro昀椀tting
A wide range of sustainability effects are realized through
our retro昀椀t. The service life and overall service life of units,
components and rolls is extended. Energy ef昀椀ciency losses due to
Figure 2: Highly wear-resistant regenerated housing.
worn geometries are reduced to new levels, which in most cases
enables extreme energy savings, especially for vacuum pumps
Additional energy savings are generated by our highly wearresistant special materials, as ef昀椀ciency losses caused by wear are
avoided in the long term.
We at Richter have always kept an eye on this by
always trying to repair and optimize products instead of always
manufacturing new ones (which we can of course always offer if
necessary). We do this with wear-resistant materials such as steel,
stainless steel, hard metals, ceramics, composites and special
materials. Many of these are special in-house developments. One
example of this is a customer from Spain. We received a rotor from
them that was not considered repairable. We discussed all the
required parameters with the customer and completely overhauled
the old rotor delivered to us.
This not only led to drastically increased running times for
the customer thanks to the optimizations we carried out and the
materials we used, but also meant that the customer was able to
save a lot of money.
As we did not manufacture new parts and used the base
body, we were also able to save a lot of CO2, which would have
been incurred if the base body had had to be manufactured from
scratch.
The total weight of the rotor is 1620 kg. After deducting the
material we used to retro昀椀t the rotor (680 kg), the remaining weight
of the base body was 940 kg, which was not recast, meaning that
58% of the original component could be reused.
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