20.500.12556/DKUM-50460 Wear resistance of coke-crushing hammers This work investigated several methods for improving the wear resistance of the 42CrMo4 tool steel used for coke-crushing hammers. The methods embraced heat treatment for obtaining different combinations of strength and ductility of the bulk steel, and surface-engineering processes comprising TiN thin-film deposition using magnetron-sputtering, nitriding and WC/Ni weld deposit surfaced by gas metal arc (GMA) method. The wear-resistance was tested under industrial conditions. Oil quenching and tempering significantly increased the wear resistance in comparison to the as-received condition. Conversely, nitriding and TiN-hard coating did not show any significant improvement. WC/Ni weld deposit provided the best protection against wear, which was caused predominantly by hard abrasive particles present in the coke. zvarni spoj mikrostrukture obrabna odpornost toplotna obdelava obraba kladivo weld deposition microstructure impact coke crusher heat treatment wear hammer true false false Angleški jezik Angleški jezik Delo ni kategorizirano 2015-07-10 12:40:12 2015-07-10 12:40:12 2022-05-29 03:07:04 2019-07-10 21:51:10 2013 0 0 str. 458-464 iss. 4 Vol. 52 Oct. 2013 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.7 25188864 17093142 0008-4433 URN:SI:UM:DK:LOCRDUNB http://www.maneyonline.com/doi/abs/10.1179/1879139513Y.0000000103 1 https://dk.um.si/Dokument.php?lang=slv&id=75019 Fakulteta za strojništvo 0 0 0