| 摘要 |
PROBLEM TO BE SOLVED: To make a production limit considering loads of the whole of a plurality of facilitis included on a production line by computing facility loads applied to a plurality of facilities included on a production line at each unit term based on the charging time of material, and changing the charging time based on the computed result. SOLUTION: The intial value of a hot rolling day of each lot is decided in the range of term capable of hot rolling (S6). Against this initial value, loads of respective facilities at every day are computed based on passing process information (S7). Because capacities of the respective facilities of every day are limited, load weight of over-capacity portion of the respective facilities of every day are determined, referring to processing capacity in one day of every facility. The initial value of a hot rolling day at every lot is changed (S8) so as to reduce the total quantity of the over-capacity load. Against the initial value of the changed hot rolling day, the load over-capacity load is again computed, and this process is repeated until the over-capacity load becomes the minimum value (S9). Finally a hot rolling production limit is outpu (S10). |
