Surface World October 2019 Surface World October 2019 | Page 53
By the perfectly tuned de-oiling and mass
fi nishing operation the brake pad carrier
plates receive the perfect surface fi nish for
the subsequent bonding process.
this important project, because Rösler not
only enjoys an excellent reputation in the
industry, but was also able to supply the
equipment for both processes including the
finishing media and compounds from one
single source.
Intelligent media selection
allows cleaning without the
need for drying
After the stamping process a conveyor belt
transfers the work pieces to the drum
washing machine equipped with an internal
transport auger. In the drum the carrier plates
are initially passed through an un-perforated
zone into which cleaning liquid is injected by
flat spray nozzles. This creates an immersion
bath for de-oiling. In the following perforated
drum section the cleaning liquid is drained,
and in a secondary de-oiling step the work
pieces are spray washed. This cleaning zone
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is followed by a drip-off section, a rinse
station and another drip-off section.
Subsequently, a conveyor belt transfers the
work pieces into the mass finishing machine.
Replenishment of the cleaning liquid takes
place with a Dosatron proportional dosing
pump. Since the cleaning liquid and the
compound for the mass finishing process
have practically the same chemical
characteristics – including the placement
of a temporary corrosion protection –
carryover of the cleaning liquid into the mass
finishing machine presents no issue. This
clever trick eliminated the need for a drying
stage after the cleaning process, resulting
not only in significant savings in the overall
capital expenditure but also reducing the
operational costs. For proper maintenance
of the cleaning liquid the washing machine
is equipped with filtration units and an oil
separator.
- we have everything covered
Gentle mass
fi nishing process
Deburring and surface roughening of
the work pieces takes place in a linear,
continuous flow vibrator R 550/6600 DA
with a specially adapted work piece loading
system. Loading actually takes place at the
rear end of the processing bowl instead of
on the lateral bowl side with greatly reduced
dropping heights. An equally gentle work
piece transfer process was incorporated in
the vibratory screening unit and the dryer
filled with Supervelate drying media. After
drying a certain work piece quantity, which
is precisely measured by weight, the work
pieces are discharged into a transport bin.
The process water from the mass finishing
machine is continuously cleaned in a
fully automatic peeling centrifuge Z 1000
equipped with automatic sludge discharge.
Visit: www.rosler.com
If you are interested in booking a stand
call Nigel Bean on 01442 826826
or email [email protected]
OCTOBER 2019
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