método de diagnóstico de rolete

摘要

Disclosed is a method of diagnosing a pair of rolls disposed opposite to each other on both sides of a cast piece passage in a continuous casting machine.  The method comprises a step of providing the result of measurement by measuring multiple times the interval between the pair of rolls when a dummy bar passes the cast piece passage at time intervals, a step of providing the trend of the time series of the differential values between the result of measurement and reference values, and a step of predicting a time at which the differential values reach or exceed a predetermined value according to the trend of the time series and determining the time when the pair of rolls break.