| 摘要 |
PROBLEM TO BE SOLVED: To prevent the missing of a temperature in an unsteady part to improve production efficiency.SOLUTION: In a control method of a continuous heat treatment line, a center speed and a heat treatment temperature are set in the following manner so as to secure quality in an unsteady part: to obtain a heat treatment facility temperature in the unsteady part in the case of setting to a maximum center speed from among a target temperature for heat treatment of steady parts in front of and behind the unsteady part, a temperature variation amount in the unsteady part and the maximum center speed; and to obtain a center speed operation amount and the heat treatment facility temperature in the unsteady part by convergence calculation so that the temperature variation amount in the unsteady part in the case of setting to the heat treatment facility temperature is within a preset threshold, and the center speed in the unsteady part is the maximum center speed or below.SELECTED DRAWING: Figure 4 |
