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Decision of Optimum Grinding Condition by Pass Schedule Change  

Bae, Yong-Hwan (Department of Mechanical Education, Andong National University)
Publication Information
Journal of the Korean Society of Safety / v.23, no.6, 2008 , pp. 7-13 More about this Journal
Abstract
It is important to prevent roll failure in hot rolling process for reducing maintenance cost and production loss. The relationship between rolling pass schedule and the work roll wear profile will be presented. The roll wear pattern is related with roll catastrophic failure. The irregular and deep roll wear pattern should be removed by On-line Roll Grinder(ORG) for roll failure prevention. In this study, a computer roll wear prediction model under real process working condition is developed and evaluated with hot rolling pass schedule. The method of building wear calculation functions for center portion abrasion and marginal abrasion respectively was used to develop a work roll wear prediction mathematical model. The three type rolling schedule are evaluated by wear prediction model. The optimum roll grinding methods is suggested for schedule tree rolling technique.
Keywords
hot rolling process; schedule tree rolling; coffin schedule; pass schedule; wear prediction model; on-line roll grinder; edge spalling; stress amplification;
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