| 摘要 |
PURPOSE: An end-mark reduction method of a coil type steel sheet product and a reel facility thereof are provided to reduce occurrence of an end mark which is generated when a steel sheet is reeled in a coil type. CONSTITUTION: An end-mark reduction method of a coil type steel sheet product comprises the following steps. A cylindrical mandrel (2010) and a tension reel (101), which includes a sleeve inserted into the mandrel to surround the circumferential surface of the mandrel, are provided, where the sleeve comprises a first elastic body inside and a second elastic body which is combined with the first elastic body. A steel sheet (S) is firstly wound around the sleeve by rotating the tension reel. The diameter of the mandrel is expanded to a second diameter which is larger than a first diameter. The steel sheet is secondly wound while the diameter of the mandrel is maintained to be the second diameter. |
