| 摘要 |
<p>The present invention relates to a roller leveler comprising: a first upper correction roller which is installed on an upper part of a steel sheet being transferred and has a curved surface formed to be sunken inward, such that the curved surface pressures the upper part of the steel sheet; a first lower correction roller which is installed on a lower part of the steel sheet and has a curved surface to convexly protrude outward, such that the curved surface pressures the lower part of the steel plate; a second upper correction roller which is installed on the upper part of the steel plate to be apart from the first upper correction roller and has a curved surface to convexly protrude outward, such that the curved surface pressures the upper part of the steel sheet; and a second lower correction roller which is installed on a lower part of the steel sheet to be apart from the first lower correction roller and has a curved surface to be sunken inward, such that the curved surface pressures the lower part of the steel sheet. According to the present invention, the roller leveler corrects the deformation of the steel sheet by pressuring a steel sheet using the first upper and lower correction rollers and the second upper and lower correction rollers having curved surfaces concavely sunken inward and convexly protruding outward, thereby correcting the steel sheet in a widthwise direction.</p> |
