Three-stage Russia - Le rolling mill for lepidocrocite - data

摘要

PURPOSE:To improve product qualities and production efficiency by providing a passage-enlarging part, expanding outside, to the terminal of a guide groove, formed into a spiral arcuate curve, and providing pinch rolls, used for correcting the biting direction, to an outlet-side guide as well. CONSTITUTION:A repeater to be applied to a three-high mill 3, is constituted of an inlet-side guide 1, a main body 2 and an outlet-side guide 3. A guide groove constituted of an inner cover 4 and an outer cover 6, is formed into a spiral arcuate curve, and a running-passage-enlarging part 7 expanding outside is prepared in the vicinity of a groove terminal. A stock to be rolled, delivered from the mill 3, whirls from the guide 1 along the guide groove of repeater main body 2 and enters the mill 3 again while being corrected in its direction by pinch rolls 8. At that time, a bent-expanding part of stock is formed by the part 7 to retreat the cover 6 surely. By this method, the rolling operation is smoothly performed, and the product qualities and the productioln efficiency of repeater are improved.