Wear resistance of coke-crushing hammers

Povzetek

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.

Ključne besede

zvarni spoj;mikrostrukture;obrabna odpornost;toplotna obdelava;obraba;kladivo;weld deposition;microstructure;impact coke crusher;heat treatment;wear;hammer;

Podatki

Jezik:	Angleški jezik
Leto izida:	2013
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UM FS - Fakulteta za strojništvo
UDK:	621.7
COBISS:	17093142
ISSN:	0008-4433
Št. ogledov:	1294
Št. prenosov:	57
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
URN:	URN:SI:UM:
Vrsta dela (COBISS):	Delo ni kategorizirano
Strani:	str. 458-464
Letnik:	ǂVol. ǂ52
Zvezek:	ǂiss. ǂ4
Čas izdaje:	Oct. 2013
ID:	1439644