| 摘要 |
PROBLEM TO BE SOLVED: To provide a rapid heating device in a continuous annealing furnace capable of obtaining a uniform temperature distribution in a steel plate and improving quality of a steel plate shape or a magnetic property and the like, even when a steel plate is rapidly heated by an induction heating device.SOLUTION: In the rapid heating device in a steel plate continuous annealing furnace consisting of a heating zone, an uniformly heating zone and a cooling zone, the heating zone has two or more induction heating devices arranged in series in the first half part, and a slow heating section having a temperature range in which a steel plate temperature is preferably 250-600°C, a length of 1-30 m and a heating rate of more than 0°C/s and 10°C/s or less is provided between the two or more induction heating devices. |
