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An approximate theory for calculation of roll torque during edge rolling of steel slabs
Author(s) -
Lundberg Sven Erik
Publication year - 1986
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.198600773
Subject(s) - slab , torque , power (physics) , die (integrated circuit) , structural engineering , mechanical engineering , physics , materials science , thermodynamics , engineering
A roll torque model is derived for edge rolling. An upper bound solution assuming plain strain in the draught‐spread plane is designed and the torque is derived. The torque and power calculated by the model is compared to power measurements in the edging stand of the hot strip mill at Fagersta Stainless AB. Slab shape after rolling is compared to estimated. The agreement between estimated and measured slab shape is very good. The calculated power is in good agreement with measurements for conventional stainless steel grade Fagersta R 350 (SS 2333), while the power is sligthly overestimated for the high alloy stainless steels Fagersta R 429 and R 560. The reason for this is probably the used flow‐stress model. As the torque and power model is in good agreement with measurements it can be included in process control systems for width control.