Analysis of Mold Friction in a Continuous Casting Using Wavelet Entropy

作者：Ma Yong^*; Wang Fangyin; Peng Cheng; Gui Wei; Fang Bohan

来源：Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science, 2016, 47(3): 1565-1572.

DOI：10.1007/s11663-016-0614-0

• SIGNAL ANALYSIS

By studying mold friction (MDF), we observed that monitoring and controlling of the friction between the strand and the mold is very important for continuous casting to improve lubrication and prevent breakout. However, existing analysis technologies of MDF do not support the continuous casting very well. In addition, we found that the wavelet entropy has multiscale and statistical properties. Informed by these observations, in this article, we use wavelet entropy to judge the lubrication state between the strand and the mold. First, we demonstrate the implementation and superiority of wavelet entropy and how it helps in efficient evaluation of the lubrication state in mold. A study of wavelet entropy of MDF, which is obtained from the abnormal continuous casting production, such as level fluctuation, submerged entry nozzle broken, and breakout, has been performed to achieve relevant conclusions. The results indicate that the information of MDF in time and frequency domains could be obtained simultaneously by the application of wavelet entropy and that the wavelet entropy has a good sensibility for the study of disorder of MDF, which could further reveal the nature of MDF.

• 出版日期2016-6
• 单位合肥工业大学