Rolling plan model and algorithm in hot rolling plant

Rolling plan problem is analyzed and a rolling plan VRP model with uncertain rolling plan numbers is suggested according to hot rolling production practice. The model considers not only the slab bounce on gauge and hardness, obverse and inverse bounce on width, and the rolling length constraint of the slabs with same width, but also the reasonable arranging of warm-up materials and staple materials. An immune algorithm based on partheno-genetic operators is proposed for solving the model. The simulation with production data shows that the algorithm is feasible.