| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technique for preventing the occurrence of shape defects named kink or top mark which are easy to occur when a hot-rolled steel strip, in particular, an extremely thick high-strength material, is wound up into the shape of a coil. <P>SOLUTION: An apparatus 1 for winding a hot-rolled steel strip includes a pair of upper and lower pinch rolls 9 for bending a hot-rolled steel strip 2 in the direction of a mandrel 3, a plurality of wrapper rolls 5 arranged at the circumference of the mandrel 3, and a throat guide 13 for leading the tip of the hot-rolled steel strip 2 bent in the direction of the mandrel 3 by the upper and lower pinch rolls 9 towards the wrapper rolls 5. This apparatus is characteristic in that: the throat guide 13 is arranged to satisfy 0≤(α-θ)≤5°, wherein an angle the throat guide 13 makes with the horizontal direction is α and an angle a common tangent line 14 between the surface of a lower pinch roll 9b and the surface of the mandrel 3 makes with the horizontal direction is θ; and also, a gap G between the throat guide 13 and the common tangent line 14 is configured so that it can be adjusted double or less than the sheet thickness of the hot-rolled steel strip 2. <P>COPYRIGHT: (C)2013,JPO&INPIT |
