ESTONIAN ACADEMY
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eesti teaduste
akadeemia kirjastus
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Estonian Journal of Engineering

Non-circular grinding of backup rolls to reduce rolling force variation; 168–179

Full article in PDF format

Authors
Thomas Widmaier, Jari Uusimäki, Petri Kuosmanen, Jari Juhanko, Pekka Väänänen

Abstract
A common structure in hot strip mill backup roll bearings is to attach the conical sleeve of the slide bearing to the roll’s shaft by a key. The key groove, cut to the conical sleeve, locally causes deformation under load. This sleeve spring is observed as rolling force variation. A new method to minimize force variations, based on 3D grinding of the backup rolls, was developed. A non-circular shape was ground on the rolls. The empirical research took place at a hot strip mill. As a result, the 3D ground non-circular geometry of the backup rolls considerably reduced the rolling force variation.
References

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doi:10.1109/28.833781

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