Pregledni rad

Failure analysis of the rolls with grooves

Željko Domazet ; Fakultet elektrotehnike, strojarstva i brodogradnje, Split
Francisko Lukša ; Fakultet elektrotehnike, strojarstva i brodogradnje, Split
Lovre Krstulović-Opara ; Fakultet elektrotehnike, strojarstva i brodogradnje, Split

Sažetak

he failure analysis of the rolls with grooves on the 3-high-roughing mill stand for hot rolling is presented. Detailed analysis of all the elements which influenced the failure was carried out, namely: the position and the place of all failures are determined and all fracture surfaces are described; the rolling forces are determined by analytical and experimental methods; numerical analysis of the local stresses due to rolling forces is performed with finite element method; stress time history of the individual local stress and stress spectrum are obtained from service loads; prop- erties of the roll material (strength, hardness, toughness and ductility) is determined by experimental testing. Based on the results of investigation, main causes of failures are presented.

Ključne riječi

failure analysis, roll failures, hot rolling

Hrčak ID:

238465

URI

https://hrcak.srce.hr/238465

Datum izdavanja:

3.3.2020.

Posjeta: 735 *