鋳片バルジング検知技術の開発

抄録

Thin solidified shell of billet in a continuous casting process expands in pressure by liquid steel inside. The expansion called bulging is often followed breakout of the shell and result in an interruption of the casting process. To avoid the accident, a bulging detecting technology has been developed. Both contact and non-contact method have been examined. Result of inline experiments shows that the contact method is superior to the non-contact method, variation of the bulging measured by the contact method was 1.85 mm whereas it was 5.65 mm measured by the non-contact method. Further more a correlation between the bulging and casting speed was confirmed.