| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for automatic extraction from a heating furnace by which reduction in production efficiency due to an error in the conveyance time or temperature of a rolling material is suppressed.SOLUTION: The method for automatic extraction from a heating furnace is provided in which a first extraction time t2 that is the time of rolling material extraction is settled while the rolling material is in a heating furnace, and rolling material is automatically extracted from the heating furnace. The method for automatic extraction from a heating furnace includes: a determination step of determining whether or not a rolling material can be extracted earlier than at the extraction time t2 on the basis of a first estimated temperature being an estimated temperature at which the rolling material is extracted from the heating furnace and a first target temperature being a temperature that the rolling material needs on the inlet side of a finishing mill; a calculation step of calculating a stand-by time dt2 using the first estimated temperature and the first target temperature when it is determined that the rolling material can be extracted earlier than at the extraction time t2 in the determination step; and an extraction time settling step of settling a second extraction time t6 that is extraction time earlier than the first extraction time t2 by a stand-by time at the maximum. |
