Simulation Model for Predicting Strip Shape in Consideration of Characteristics of Flexible Backup Rolls:—Development of Controlling Technology for Strip Shape in 20-High Sendzimir Mill I—

概要

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Flexible shaft backing assemblies (FSBAs) which have a series of slots in the area of the saddles of backup rolls have been introduced into an actual 20-high Sendzimir mill to extend the shape control quantity of the AS-U crown adjustment, and shape control technology using FSBAs has been investigated. To begin with, a simulation model for predicting the shape of cold-rolled strips in the 20-high Sendzimir mill was developed considering the distribution of geometrical moment of inertia in the roll body length direction in order to analyze the deflection characteristics of FSBAs. The calculated values were in good agreement with the experimental values in experiments using FSBAs in the 20-high Sendzimir mill. From simulations carried out using this analysis model, it was found that the effect of the slot angle of the assembly shaft on strip shape was large. It was also found that the shape control range was doubled by the introduction of FSBAs and that it was mainly extended toward the quarter buckles side and edge waves side.
The Japan Society for Technology of Plasticityの論文