| 摘要 |
<p>PURPOSE:To reduce a length of abnormality in elongation percentage which occurs when a temper rolling machine passes a narrow lap seam welding point and a singular point related with change of a rolling condition in the temper rolling method in a continuous annealing line for a metallic strip. CONSTITUTION:A line speed is reduced to a mill passing speed as far as the time directly before the welding point and the singular point pass the temper rolling machine, the line speed is held after it arrives at the mill passing speed and an elongation percentage control is changed over to a fixed load control, at least one of a rolling load or a tension is operated after the welding point and the singular point pass the mill and the fixed load control is changed over to the elongation percentage control and the line speed is accelerated from the mill passing speed.</p> |
