New solutions are required to reduce weight and replace heavy metallic parts. Aramid fibers and carbon fibers are processed into special yarns that are frequently deployed as compound materials and as lightweight composites.
Aramid fibers are produced in a highly-chemical process that is aggressive. The acrylic precursor used to manufacture carbon fibers is a different process, but again no less difficult. In these processes the gear metering pumps are not only responsible for the high-precision control of the melt transport. Durability, resistance and cost efficiency also plays decisive roles. The process, the expected pump lifespan and the maintenance are the decisive factors for choosing the materials from which the pumps and their components are manufactured. Oerlikon Barmag, Chemnitz/Germany, a subsidiary of the Oerlikon Manmade Fibers segment of Oerlikon Management AG, Pfäffikon/Switzerland, offers solutions that combine the various materials and the latest technologies. Surfaces with ceramic coatings, gears and shafts featuring DLC coatings, pumps made from cobalt alloys or robust and durable hybrid constructions comprising zirconium oxide ceramic and duplex stainless steel and the high-precision pumps are design-optimized depending on the intended use. Various seal systems and customized drive concepts round off the program. Thus reliable solutions for the high-precision metering of disparate media in complex processes for all applications are made available.