| 摘要 |
PURPOSE:To develop uniformly a solidified layer to a substantial thickness in continuous casting of a steel plate to be drawn in the form of a plate from a roll gap by drawing the steel plate under application of tension thereon to generate high stress in the solidified layer. CONSTITUTION:A steel plate 3 delivered from a roll gap is pulled by pinch rolls 8, and the surface temp. Ts of the steel plate, which is internally unsolidified, right after the emergence from the roll gap is measured with a thermometer 7, then the thickness Ys of the solidified layer at the outlet part of rolls and the permissible stress sigmaS thereof are determined. If the stress in the solidified layer 9 by tension F on the plate 3 is designated as sigma0, sigma0<=sigmaS is attained and the high stress sigma0 which is approximate to the permissible stress sigmaS as far as possible and at which the layer 9 does not slip from the surfaces of cooling rolls 1, 2 is generated in the layer 9. The tension F on the plate 3 by the rolls 8 is so adjusted that the face pressure of the layer 9 and the rolls 1, 2 can be increased. |
