Rolls in late finishing stands of hot strip mills often experience the shortest operation times of the whole production line because of excessive wear. At Karl Buch a new graphitized HSS roll material, Teranit F, was developed. Test rolls with this material were run at a German narrow strip mill show a significantly improved wear behaviour as well as superior product quality compared to conventional ICDP rolls (performance improvement by a factor of 2.3). Teranit F has the potential to allow a synchronization of the roll changes of the late finishing stands with earlier stands and to significantly reduce the total cost of ownership TCO of a mill.
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