Charles Sternberg, Associate Editor06.06.22
The Ottobock company in Duderstadt, Germany, manufacturer of all kinds of orthopedic systems, recently commissioned two new mass finishing systems from Rösler.
The equipment is utilized at a factory in Blagoevgrad, Bulgaria, that was opened in 2021. For planning and building its tenth and largest manufacturing facility, Ottobock paid special attention to efficient and sustainable operations. For this reason, a specially developed Keramo-Finish process, an energy-efficient dryer and a centrifuge for cleaning and recycling of the process water are being utilized.
When the company was looking for new mass finishing solutions for producing its components in an optimized and more sustainable manner, it was only natural that it turned to Rösler again for help. For the initial processing trials the Customer Experience Center at Rösler represented the ideal platform. The center is not only equipped with the latest equipment for practically all finishing technologies. But it can also resort to a portfolio of more than 15,000 media and compounds, all developed and produced in-house.
The new, acid-free process allows the complete recycling of the process water. This has not only resulted in a significant decrease of the water and compound consumption but also in a sizable cost reduction.
The polishing operation takes place in a new, high-performance rotary vibrator, model R 780 EC. The special shape of the processing bowl creates a gentle, homogeneous flow of the media/work piece mix. This ensures that small and delicate as well as large and bulky work pieces are quickly polished and separated in an efficient and gentle manner.
The same operational benefits are also achieved with the second new rotary vibrator, model R 420 EC. Together with specially selected media and compounds Ottobock is using this machine for a broad spectrum of applications ranging from deburring and edge radiusing to surface smoothing.
For the eco-friendly cleaning and recycling of the process water the two mass finishing machines are connected to a semi-automatic Rösler centrifugal cleaning system, model Z 800.
This patented direct-heat dryer is equipped with an innovative heat-block heating system directly mounted to the base plate of the processing bowl. This ensures a highly efficient heat transfer with a minimum of heat loss.
Thus, the dryer guarantees not only a quick, reliable and spot-free drying operation, but it also allows significant energy savings, which, compared to conventional drying systems, can amount up to 40 %. Therefore, the rotary dryer Euro-DH plays a key role in a more effective energy management within the framework of the recently introduced standard DIN EN ISO 50001.
The new dryer also helps reducing the CO2 emissions and, as a result, represents an important contribution towards achieving the required environmental and climate targets.
The equipment is utilized at a factory in Blagoevgrad, Bulgaria, that was opened in 2021. For planning and building its tenth and largest manufacturing facility, Ottobock paid special attention to efficient and sustainable operations. For this reason, a specially developed Keramo-Finish process, an energy-efficient dryer and a centrifuge for cleaning and recycling of the process water are being utilized.
Newly Organized Manufacturing of Components with Optimized Processes
For many years, Ottobock has been using equipment and consumables supplied by Rösler.When the company was looking for new mass finishing solutions for producing its components in an optimized and more sustainable manner, it was only natural that it turned to Rösler again for help. For the initial processing trials the Customer Experience Center at Rösler represented the ideal platform. The center is not only equipped with the latest equipment for practically all finishing technologies. But it can also resort to a portfolio of more than 15,000 media and compounds, all developed and produced in-house.
Keramo-Finish Operation Replaces a Process Utilizing Acidic Compounds
Among other measures an acid-based process for creating a high-gloss polish was replaced by a tailormade Keramo-Finish operation. This includes the utilization of a porcelain polishing media in combination with a special paste and a brightening compound.The new, acid-free process allows the complete recycling of the process water. This has not only resulted in a significant decrease of the water and compound consumption but also in a sizable cost reduction.
The polishing operation takes place in a new, high-performance rotary vibrator, model R 780 EC. The special shape of the processing bowl creates a gentle, homogeneous flow of the media/work piece mix. This ensures that small and delicate as well as large and bulky work pieces are quickly polished and separated in an efficient and gentle manner.
The same operational benefits are also achieved with the second new rotary vibrator, model R 420 EC. Together with specially selected media and compounds Ottobock is using this machine for a broad spectrum of applications ranging from deburring and edge radiusing to surface smoothing.
For the eco-friendly cleaning and recycling of the process water the two mass finishing machines are connected to a semi-automatic Rösler centrifugal cleaning system, model Z 800.
Energy-Efficient Drying Operation
For drying, the finished work pieces, Ottobock chose the latest version of the RT 550 Euro-DH rotary dryer, also supplied by Rösler.This patented direct-heat dryer is equipped with an innovative heat-block heating system directly mounted to the base plate of the processing bowl. This ensures a highly efficient heat transfer with a minimum of heat loss.
Thus, the dryer guarantees not only a quick, reliable and spot-free drying operation, but it also allows significant energy savings, which, compared to conventional drying systems, can amount up to 40 %. Therefore, the rotary dryer Euro-DH plays a key role in a more effective energy management within the framework of the recently introduced standard DIN EN ISO 50001.
The new dryer also helps reducing the CO2 emissions and, as a result, represents an important contribution towards achieving the required environmental and climate targets.