Ultrasonic evaluation of double poured rolls

Ultrasonic evaluation of the bonding characteristics in an infinitely chill ed double poured rolls is carried out. During manufacturing process there a re defects in the form of small holes or inclusions in these rolls. These d efects act as points of stress in addition to the service stresses. By grin ding, stress redistribution occurs. The shell-core interface is vulnerable to such stresses. Ultrasonic testing can be used to establish the critical points of these stress and hence predict their failure. (C) 1999 Elsevier S cience Ltd. AII rights reserved.