| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a product with yield and working rate improved, which coincides with a target sectional shape by taking out an influence coefficient from the influence coefficient stored preliminarily, and indicating a roll gap correction quantity to a rolling stand to be controlled. SOLUTION: When a product bar steel comes out from a horizontal rolling stand, sectional dimensions are measured by the sectional dimension measuring part for the product, the measured sectional dimensions are compared with target sectional dimensions for each dimension item by a correction procedure selection part, and differences among them are found. According to the differences in dimension, a correction procedure is selected from a correction rule memorized in a correction rule memory part 26. Material temperatures obtained from a material temperature measuring part, material sectional dimensions obtained from a material sectional dimension measuring part, product temperatures from a product temperature measuring part, set materials, and the influence coefficient corresponding to each condition of a mill constant, are taken out from an influence coefficient memory part 29 by a roll gap adjusting part. By using this influence coefficient, the roll gap correction quantity to the rolling stand is calculated, and a roll gap change is indicated to a roll gap change part.</p> |
