| 摘要 |
<p>PURPOSE:To always stabilize a sheet thickness, to contrive automation of control with high accuracy for a sheet thickness based on a calculated elastic modulus or a normal plastic modulus, etc., of the sheet material by adding on a rolling reduction force controlling the sheet thickness automatically with an assumed plastic modulus of an inlet thickness deviation effecting on an outlet thickness. CONSTITUTION:From a detected speed 23, a shifted mount 24 and a detected sheet width 4 on a sheet material rolling stand 2, the elastic modulus is calculated by the first arithmetic unit 5. Further, from a target value of rolling load, the sheet width, a rolling reduction, etc. of a setting apparatus 6, the reference plastic modulus is calculated by the second arithmetic unit 7. These elastic modulus, reference plastic modulus and thicknesses 3a, 3b of the inlet side and outlet side, the detected speed 23, a detected opening 22 are introduced into a automatic sheet thickness controlling section (AGC) 8 to operate a rolling reduction apparatus 21 by a calculated integral output. In this case, the assumed plastic modulus of the inlet thickness 3a deviation on the outlet thickness 3b is calculated by the third arithmetic unit9 and introduced into the second arithmetic unit 7 to correct the plastic modulus. In this way, the sheet thickness is always controlled stably and the sheet thickness is controlled automatically with high accuracy.</p> |
