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Investigations on the Transient Mould Friction Force in Slab Continuous Casting based on Fast Fourier Transformation
Author(s) -
Ma Yong,
Wang Xudong,
Zang Xinyang,
Yao Man,
Zhang Li,
Ye Shihong
Publication year - 2009
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.2374/sri08sp097
Subject(s) - continuous casting , slab , materials science , lubrication , transient (computer programming) , oscillation (cell signaling) , frequency domain , fast fourier transform , mechanics , casting , caster , time domain , fourier transform , mechanical engineering , composite material , structural engineering , engineering , physics , computer science , algorithm , quantum mechanics , biology , computer vision , genetics , operating system
In continuous casting, the friction forces in the mould reflect the lubrication between the mould and slab, moreover, they affect the slab surface quality and caster productivity. In the present research the friction force is calculated by measuring the difference of working forces during HOT and COLD tests, which are carried out on the slab continuous caster equipped with hydraulic oscillators. Through analysing the mould friction using the Fast Fourier Transformation (FFT) method, the effects of mould oscillation mode and casting speed on the mould friction force are evaluated. The characteristics of the friction signal in the frequency domain are also investigated. Especially, the characteristics of friction force fluctuations before breakouts are discussed. The experimental and analytical results may contribute to more clearly understand the transient lubrication behaviour not only in the time domain but also in the frequency domain, which is also useful for the application of FFT in data analysis of mould processes.