Zero Crown Housing
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The Sendzimir Zero Crown housing is now over 20 years old in concept and
design. Nevertheless, this idea of strong side frames and a tapered top
and bottom has withstood the testing of newer technical analyses
available - such as finite element analysis which has further reinforced
the validity of this housing structure.
The Zero Crown housing does not eliminate housing stretch under load. Rather, the design concept is to allow the housing to stretch uniformly under load. Side frame deflection and transverse slab deflection are combined in a unique way to maintain uniform force along the full length of the work rolls, thus assuring "zero-crown" contour across the entire strip width. There have been over 50 Zero Crown Housings now built world-wide since 1975. All Sendzimir Licensees use this basic design.
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