| 摘要 |
<p>PURPOSE:To improve the productivity and the product accuracy by sticking a strain gauge to the same position of the surface and the rear side of a strip, also providing a slit in the peripheral direction at the corresponding position of a roll, and measuring continuously strains on the surface and the rear side of the strip. CONSTITUTION:A strain gauge 4 is stuck to the same position of the surface and the rear side of a metallic strip 1, respectively. At a position where the strain gauge 4 passes through on the surface of a roll 2 and 3, a slit 21 whose width is wider than the width of the gauge 4 is provided in the peripheral direction of the roll. Also, this slit 21 is buried by a synthetic resin, etc. of a low Young's modulus. By this measuring device, the peak strain of the time when the strip 1 passes through the rolls 2, 3 is derived, and also a radius of curvature is obtained by arithmetic. By using this bending radius of curvature, the shape is straightened based on a relation between plate thickness, tension, roll push-in quantity, etc. which are derived in advance, and the radius of curvature. According to this method, the operation is executed stably, and also the productivity and the product accuracy are improved.</p> |
