| 摘要 |
PURPOSE:To quantitatively and accurately detect a deviation of the center of guide rolls, by inserting a standard straight rod between upper, lower guide rolls and a roll caliber for rolling a steel rod, and slanting the rod vertically to measure the two extents of displacement. CONSTITUTION:A standard straight rod 5 with a circular cross section is inserted between a caliber 2a formed between rolling rolls 1, 2 and guide rolls 3, 4. The front tip of the rod 5 is located at the upper limit surface of the rolls 3 and 4. Next, the front tip of the rod 5 is located at the lower limit surface of the caliber 2a and its fulcrum is at the upper limit surface of the caliber 2a and the fulcrum of it is at the lower limit surface of the rolls 3 and 4. Angles theta1 and theta2 with respect to the horizontal line in the rolling direction are measured by displacement gauges 6 and 7 such as a magnet scale. From the difference between these measured values, the extent of deviation of the center of the rolls 3 and 4 from that of the roll caliber of the mill is calculated. |
