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 LIVE 2020 twitter: @surfaceworldmag 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 51