| 摘要 |
<P>PROBLEM TO BE SOLVED: To accurately and surely detect a coagulation position of a cast piece manufactured by a continuous casting device as a target, without setting a lift-off amount according to a contact method and further without being affected by variation in lift-off amount. <P>SOLUTION: An internal coagulation detection apparatus 1 comprises a transmitter 5 which transmits an ultrasonic wave toward a cast piece W, a receiver 6 which receives the ultrasonic wave transmitted by the transmitter 5 and transmitted through the cast piece W, a determination unit 21 which determines a coagulation position inside the cast piece W on the basis of a signal of the ultrasonic wave received by the receiver 6, a distance measuring unit 22 which measures a distance between the cast piece W and the transmitter 5 and a distance between the cast piece W and the receiver 6, and a correction processing unit 23 which corrects a signal strength of the ultrasonic wave received by the receiver 6 on the basis of the distances measured by the distance measuring unit 22. <P>COPYRIGHT: (C)2013,JPO&INPIT |
