RT Journal Article
SR Electronic
A1 Durstová, Zuzana
A1 Mičieta, Branislav
A1 Čilliková, Mária
A1 Neslušan, Miroslav
A1 Mrázik, Jozef
T1 Non-destructive Magnetic Evaluation of Ground Surfaces Made of Bearing Steel of Variable Hardness
JF Manufacturing Technology Journal
YR 2014
VO 14
IS 3
SP 297
OP 303
DO 10.21062/ujep/x.2014/a/1213-2489/MT/14/3/297
UL https://journalmt.com/artkey/mft-201403-0009.php
AB This paper deals with non destructive magnetic evaluation of ground surfaces of variable hardness based on Barkhausen noise (BN) technique. Except magnetic investigation, obtained BN signals are correlated with metallographic observation, microhardness readings as well as residual stress measurements. The results show that regime of heat treatment - annealing after hardening significantly affects the possible concept for monitoring surfaces after grinding. Conventionally heat treated surfaces of hardness 62 HRC indicate the typical surface thermal softening induced by grinding cycle whereas samples of lower hardness exhibit rehardening effect associated with the progressive decrease of Barkhausen noise responses along with the developed grinding wheel wear.