Abstract
The metal processing system usually consists of various components such like motors, work rolls, backup rolls, idle rolls, sensors, etc. Even a simple fault in a single component in the system may cause a serious damage on the final product. It is therefore necessary to diagnose the faults of the components to detect and prevent system failure. Especially, the defects in a work roll are critical to the quality of strip. It is especially difficult to detect faults of a roll by using the existing frequency analysis method if the speed of the roll is changing. In this study, a new diagnosis method for roll eccentricity under the roll speed changes was developed. The new method was induced from analyzing the rolling mechanism by using rolling force models, radius-speed relationship, and measured rolling force, etc. Simulation results by using the field data show that the proposed method is very useful.
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Lee, C.W., Kang, H.K. & Shin, K.H. Fault diagnosis of roll shape under the speed variation in hot rolling mill. J Mech Sci Technol 20, 1410–1417 (2006). https://doi.org/10.1007/BF02915964
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DOI: https://doi.org/10.1007/BF02915964