Abstract
Instruments for measuring rolling loads have been constructed for insertion between the screw and the top bearing chocks of a heavy plate mill. They have been accommodated in a limited space and designed to attempt the measurement of non-uniformly applied loads.
The load indications during the rolling of a varied programme for plates of different size have been analysed and compared with three roll-load formulae. That due to Sims seems to give the best agreement, and the majority of the calculations for reductions over 10 per cent lie within ±25 per cent of the measurements, whereas the other formulae show discrepancies often exceeding 50 per cent. For reductions less than 10 per cent all three formulae show similar trends, giving values in general very much lower than those obtained with the instruments.
Although the instruments have proved satisfactory for short trials, certain features will be modified in models which are now being designed with a view to more permanent installation.
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