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2011
Conference Paper
Titel
Recycling of tungsten carbide reclaim powder and ferro-titanit cromoni chips with the current supported sintering techniques SPS and EDS
Abstract
Hard scrap of tungsten carbide originating from used and worn parts or waste products is often converted into usable raw material by a complex zinc reclamation process. Ferro-Titanit bars are dry machined to their final shape by what lots of valuable chips are generated, which can be collected afterwards. In this work new ways to recycle materials are presented. Both tungsten carbide reclaim powder and Ferro-Titanit chips are re-densified and therefore recycled to samples by the current supported sintering techniques Spark Plasma Sintering (SPS) and Electro Discharge Sintering (EDS). The resulting microstructure of the created samples is characterized by metallographic investigations and hardness measurements and discussed in comparison to the microstructure of conventionally produced parts. Further investigations of recycled material and conventionally produced parts are carried out by a pin on paper wear test and discussed regarding their wear resistance as it is one of these materials most important properties.