Expertise in Synergy - Glatt
Expertise in Synergy - Glatt Expertise in Synergy - Glatt
hollomet, Innovations in Cellular Materials Glatt, cellular materials and the hollomet GmbH The idea of manufacturing cellular materials originated through a close collaboration between the Glatt Systemtechnik GmbH and a neighbouring research institute (IFAM, Fraunhofer Institute for Manufacturing Technology and Applied Materials Research). The most important step in producing cellular materials is the coating, which is a core competence of the Glatt Group. After developing this material class for more than eight years as a department within the Glatt Systemtechnik GmbH we decided to concentrate these activities in a new company called hollomet GmbH launched on January 1st 2009. In this timeframe many interesting applications have manifested from the countless possibilities, which we together with our customers want to turn into industrial products. Due to being in quite similar business to IPC Dresden, with the main difference being our focus on metallic and ceramic materials we are its daughter company and part of the Glatt-group. Applications of cellular materials Here we would like to describe a few types of applications from the different fields of industry. - Mufflers small combustion engines For this application the inner parts of the muffler are equipped with globomet ® structures (material: FeCrAl). The main advantages compared to conventional mufflers are the much simpler setup and the mechanical strength and corrosion resistance of this material at temperatures of up to 1.000 °C. Additionally measurements have shown an improved sound absorption and a higher power output / lower fuel consumption (due to a lower backpressure of the component) compared to a conventional component. - Adsorbents for oxygen production Coated carriers are ceramic spheres consisting of an inert carrier inside and a functional coating on the surface. This functional coating works as a catalyst (for chemical processes) or as an adsorbent (for separations). The overall efficiency of these processes is determined by the velocity of the process (how fast is the process going on) and the capacity (amount of conversion per unit volume). Whereas the velocity is increased by thinner functional coatings (since diffusion through pores is the limiting factor), capacity is increased by thicker coatings (more reactive material per volume). Within our globocer ® products we can exactly control the thickness of the functional coatings and thereby optimize the product for maximum efficiency for each of our customers processes. - Oxidation catalyst for passenger cars Conventional catalysts based on metal stripes of ceramic extrudates have two fundamental disadvantages. Firstly the exhaust gas is distributed unevenly concerning velocity and temperature. This reduces the potential efficiency of the catalyst, since the structures cannot compensate these inhomogeneities due to their channel structure. Secondly these structures offer nearly no possibilities for efficient construction, also due to the channel structure. Here components based on foamet ® offer new possibilities. Due to their morphology gas flowing through these structures is laterally homogenized, which results in a rather even distribution of velocity and temperature; the catalyst is used much more efficiently. The good mechanical properties and its morphology enable configurations with much lower backpressure and therefore higher power output / lower fuel consumption with the same catalytic efficiency. Additionally the amount of precious metal needed is also significantly lower. Technology and products The process route for manufacturing our cellular materials is quite easy. The first step is a coating of a polymer template (usually Styrofoam) or a ceramic carrier (which we produce in situ by granulation) with a mixture of ceramic or metal powder and an organic binder. In a second step the organic compounds are evaporated out and the powder is burnt (“sintered”) to a solid structure, whereby the shape of the template remains. As a result we obtain products of following types: 8 International Times No. 27 · March 2009
globomet ® are metallic hollow spheres and structures made thereof. Their most interesting properties are sound muffling, crash absorption, thermal insulation and high compression strength at low density; they can withstand temperatures of over 1.000 °C and are not susceptible to pollution. globocer ® are ceramic hollow spheres or ceramic coated carriers. Due to the high flexibility and excellent controllability of the Glatt coating process these structures can be ideally adapted to the needs and requirements of our customers. Their main areas of application are catalysts for the chemical industry and adsorbents for gas separation and purification. Our Team W. Hungerbach Managing Director Dr. N. Reger Operation Manager A. Gerds Project Engineer globocer ® foamet ® are metallic sponges made of highly corrosion resistant FeCrAl. Since these structures have a very high specific surface area, a high thermal conductivity and provide only a low drag to passing liquids and gases, they are an ideal carrier for catalysts and adsorbents. The mechanical properties make them well suited for component constructions especially in mobile applications. As it can be seen from the general properties selection the material can be customized in wide ranges as needed by the different applications. This is the main task to provide our customers with the optimum solution. Services Besides the finished products we offer contract manufacturing on our equipment for granulation, coating and sintering. Based on our experience we also offer development services for the significant process parameters as well as new and improved formulations. G. Bingel Project Engineer globomet ® P. Schmock Project Engineer foamet ® International Times No. 27 · March 2009 9
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globomet ® are metallic hollow spheres and structures made<br />
thereof. Their most <strong>in</strong>terest<strong>in</strong>g properties are sound muffl<strong>in</strong>g,<br />
crash absorption, thermal <strong>in</strong>sulation and high compression<br />
strength at low density; they can withstand temperatures of over<br />
1.000 °C and are not susceptible to pollution.<br />
globocer ® are ceramic hollow spheres or ceramic coated carriers.<br />
Due to the high flexibility and excellent controllability of the<br />
<strong>Glatt</strong> coat<strong>in</strong>g process these structures can be ideally adapted to<br />
the needs and requirements of our customers. Their ma<strong>in</strong> areas<br />
of application are catalysts for the chemical <strong>in</strong>dustry and adsorbents<br />
for gas separation and purification.<br />
Our Team<br />
W. Hungerbach<br />
Manag<strong>in</strong>g Director<br />
Dr. N. Reger<br />
Operation Manager<br />
A. Gerds<br />
Project Eng<strong>in</strong>eer<br />
globocer ®<br />
foamet ® are metallic sponges made of highly corrosion resistant<br />
FeCrAl. S<strong>in</strong>ce these structures have a very high specific surface<br />
area, a high thermal conductivity and provide only a low drag to<br />
pass<strong>in</strong>g liquids and gases, they are an ideal carrier for catalysts<br />
and adsorbents. The mechanical properties make them well<br />
suited for component constructions especially <strong>in</strong> mobile applications.<br />
As it can be seen from the general properties selection the material<br />
can be customized <strong>in</strong> wide ranges as needed by the different<br />
applications. This is the ma<strong>in</strong> task to provide our customers with<br />
the optimum solution.<br />
Services<br />
Besides the f<strong>in</strong>ished products we offer contract manufactur<strong>in</strong>g on<br />
our equipment for granulation, coat<strong>in</strong>g and s<strong>in</strong>ter<strong>in</strong>g. Based on<br />
our experience we also offer development services for the significant<br />
process parameters as well as new and improved formulations.<br />
G. B<strong>in</strong>gel<br />
Project Eng<strong>in</strong>eer<br />
globomet ®<br />
P. Schmock<br />
Project Eng<strong>in</strong>eer<br />
foamet ®<br />
International Times No. 27 · March 2009<br />
9
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