Steel Water Continuous Casting Slag Detection System Based on Wavelet

Abstract

Based on a large number of investigation and analysis for slag detection system (SDS), a kind of automatic SDS using vibration measurements had been put forward in this paper. After studying casting process from ladle to pouring box and protection casting supporting mechanical structure, vibration dynamics model of supporting structure was established, also variation of steel water impact force and influencing factors of inspecting spot vibration are analyzed. Theories of wavelet, wavelet package and their applications in signal processing are presented. Vibration signal of steel water was processed by the way of wavelet package, then its eigenvector and tolerance range were obtained, and that can realize effective identification for steel water status. Experimental results indicate that this system is very effective and achieves anticipated outcomes.

A review study on ladle slag detection technologies in continuous casting process

“…Whenever a new ladle arrives at the turret, an operator must plug the communication cable of the electromagnetic detection system. Lastly, according to a study [29], the slag must be close enough to the measuring coils to get a guaranteed detection otherwise wrong results can be gotten [4].…”

“…Even if the tundish walls are well coated with high resistant materials, the ladle slag will dissolve it due to its content, temperature and volume. If the slag carryover is not prevented at the end of draining of every ladle and gathers in the tundish during whole tundish sequence, the slag can dissolve the refractory material of tundish wall [3,4]. The amount of slag gathered in the tundish can be increase at each ladle.…”