METHOD FOR EXTENDING THE SERVICE LIFE OF A ROLL LINE

摘要

A method for extending the service life of a roll line (20) used in a continuous casting process, which roll line (20) comprises a shaft (24) having an outer diameter (Øo and at least one roll mantle (28) having a corresponding inner diameter (Øi) arranged to be supported on the shaft (24). The method comprises the steps of reducing the outer diameter (Øo) of the shaft (24) and/or increasing the inner diameter (Øi) of the at least one roll mantle (28) when worn, and re-using the shaft (24) of reduced outer diameter (Øo) and/or the at least one roll mantle (28) of increased inner diameter ( Øi) with at least one roll mantle (28) of corresponding inner diameter (Øo) and/or a shaft (24) of corresponding outer diameter (Øi) respectively. Alternatively, the method comprises the step of re-using the shaft (24) of reduced outer diameter (Øi) and/or the at least one roll mantle (28) of increased inner diameter (Øi) together with at least one component inserted therebetween or with a shaft (24) and/or at least one roll mantle (28) respectively with at least one component inserted therebetween.