DEVICE FOR PLANNING STEEL MAKING AND ROLLING, METHOD AND PROGRAM FOR PLANNING STEEL MAKING AND ROLLING

摘要

PROBLEM TO BE SOLVED: To simultaneously optimize association of a steel material rolled as a hot piece, a steel material rolled as a cold piece and a steel material stored as a cold piece after steel tapping with orders for each of such steel materials.SOLUTION: Frames to be applied per product type when an evaluation function represented by a weighted linear sum of an evaluation value on process load leveling and the like of a finishing stage is made to be minimum within a range that satisfies delivery steel amount constraint are calculated with a mathematical optimization technique on the basis of: a second order matrix 700 indicating a weight per product type (per steel type, manufacturing method, conditioning method) and per due date of steel tapping and rolling; steel tapping frames for hot charge rolling (HCR) 811a-811e, a steel tapping frame for cold charge rolling (CCR yard) 812, and steel rolling frames for cold charge rolling (CCR application) 822a, 822b; a product type model 900 which is a rate of occurrence (occurrence probability) of processing in each finishing stage for each of the product methods; and a planning policy parameter.SELECTED DRAWING: Figure 3