Wear resistance of coke-crushing hammers

Abstract

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.

Keywords

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

Data

Language:	English
Year of publishing:	2013
Typology:	1.01 - Original Scientific Article
Organization:	UM FS - Faculty of Mechanical Engineering
UDC:	621.7
COBISS:	17093142
ISSN:	0008-4433
Views:	1294
Downloads:	57
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
URN:	URN:SI:UM:
Type (COBISS):	Not categorized
Pages:	str. 458-464
Volume:	ǂVol. ǂ52
Issue:	ǂiss. ǂ4
Chronology:	Oct. 2013
ID:	1439644