2020 ROUND UP OCTOBER
Innovative work piece drying solutions for mass finishing applications
Energy savings of up to 40 %
A new generation of dryers offers energy savings of up to 40 % for drying the finished work pieces after a mass finishing process . They are an important factor in the implementation of a consistent energy management per standard DIN EN ISO 50001:2018 as well as environmental and climate protection goals .
Around 90 % of all mass finishing applications are wet processes so that the finished work pieces must undergo a subsequent drying stage in either continuous feed or batch operation . This provides temporary corrosion protection , allows trouble-free down-stream manufacturing operations and guarantees a work piece surface free of water spots . The most common drying machines are rotary , vibratory dryers filled with a drying medium that absorbs the moisture from the work pieces . To achieve the required drying temperature the heat , generated by heating elements , is transferred through the “ insulating medium ” air to the base plate of the dryer . This , somewhat old-fashioned heat transfer is accompanied with a high heat loss . Since dryers are normally running non-stop during a shift , they require a considerable energy input .
Direct heating and temperature control save energy
With the newly developed heat block heating system Rösler can now offer rotary vibratory dryers with drying medium that allow significantly more energy-efficient drying operations . Since the heating system is now directly connected with the base plate of the processing bowl , the heat transfer takes place with minimal heat loss . This design change has reduced the energy consumption by 30 to 40 %. Further energy savings are achieved by the continuous , thermostatically controlled temperature of the drying medium . Once the set temperature for a specific drying process is reached , the heating system of the dryer is turned off and only turns on again , when the temperature falls below the pre-set level . This temperature control can be linked with the preceding mass finishing machine ( s ) or can be integrated into a higher-level control panel .
A patent application has been filed for the new heating technology in rotary dryers .
Energy-efficient solutions for hot air rotary and belt dryers
Hot air rotary and belt dryers are generally used for drying of work pieces with holes , where drying medium might get lodged , or for drying polished coin blanks . Since these dryer types require a high energy input as well , Rösler has also developed energysaving solutions . For example , the integration of a condensation / drying system with a heat pump ( Airgenex ® ) reduces the energy requirements for these machines by up to 40 %. Further energy savings can be achieved by using state of the art electronic controls . A positive side effect is that the dryers now require a significantly lower connected load . Since the dried work pieces are mostly immediately transferred to subsequent manufacturing operations or packaged , the drying temperatures can be reduced . The lower drying temperatures also ensure more comfortable work place conditions . A patent application was also filed for the new hot air dryers .
These new , energy-efficient dryers will assist the customers in the implementation of a more effective energy management per standard DIN EN ISO 50001:2018 , taking effect in February 2020 , which demands significant energy savings . In addition , the new dryers make an important contribution to achieving the environmental and climate protection objectives . In Germany any investments resulting in sustainable energy savings qualify for subsidies by various institutions like the federal office for economic affairs and export control and the LfA Förderbank Bavaria . Other countries and even your local utility have similar incentives to encourage energy savings .
The new rotary dryer RT Euro-DH .
For over 80 years
Highly energy-efficient the privately
Reliable owned Rösler Oberflächentechnik
Fast
GmbH has been actively engaged in the field of surface preparation and surface finishing . As global market leader we offer a comprehensive portfolio of equipment , consumables and services around the mass finishing and shot blasting technologies for a wide spectrum of different industries . Our range of about 15,000 consumables , developed in test centers located all over the world , specifically serves our customers for resolving their individual finishing needs . Under the brand name AM Solutions we offer numerous equipment solutions and services in the area of additive manufacturing / 3D printing . Last-but-not-least , as our central training center the Rösler Academy offers practical , hands-on seminars to the subjects mass finishing and shot blasting , lean management and additive manufacturing . Besides the German manufacturing locations in Untermerzbach / Memmelsdorf and Bad Staffelstein / Hausen the Rösler group has a global network of 15 manufacturing / sales branches and 150 sales agents .
For more information please go to : www . rosler . com
64 DECEMBER 2020 read online : www . surfaceworld . com