Development of Camber Control Technique in Plate Rolling

Abstract

In plate rolling, camber is a cause of not only yield loss and poor grade, but also an extra process at the shearing line, calling for an establishment of a camber control technique.
This report presents the analysis of camber mechanism, the development of camber-meter and the effect of camber control in the Mizushima plate mill. The results obtained are as follows;
1) Relation between camber and wedge in plate rolling and factors affecting wedge mechanism were clarified, and high-accuracy models applicable to camber control were developed.
2) Plate camber can be measured accurately regardless of sideslipping or turning of a plate during rolling by a developed camber measuring system (camber meter).
3) A dynamic camber control technique using camber meter and camber control model was developed. Camber is reduced noticeably in various plate length by applying this control technique.