| 摘要 |
<p>PURPOSE:To omit the camber straightening of a bar cutting material and to increase the productivity by cooling with setting the target of the cooling completion temp. of a plate end adjacent part within the specified range corresponding to the allowable quantity of a camber and to the temp. lower than the target value of the cooling completion temp. of the plate center part. CONSTITUTION:A cooling water is fed onto the surface of a steel plate with transferring a hot steel plate in the longitudinal direction. The temp. for completion of the cooling at the plate center part is set to the target value. The cooling completion temp. of the plate end adjacent part is set to the temp. lower than the target value within 1/2 of the temp. difference corresponding to the allowable quantity of the camber. Since the temp. at the plate side end is abruptly reduced, the position about 50mm from the plate side end is taken as the plate end adjacent part. For cooling the plate end adjacent part like this an edge mask, shielding gutter, etc. are used. By cooling like this, the camber can be put within the allowance.</p> |
