Hot rolling plan arrangement method

Abstract

The invention relates to a hot rolling plan arrangement method, and belongs to the technical field of metallurgical continuous rolling. The method includes: setting a constraint function, establishing a rolling plan model, solving the rolling plan model, performing programming by employing a computer programming technology, and establishing a continuous casting and rolling production, organization, and management mode. Compared with the prior art, the beneficial effects of the method are that the plan making is flexible, mixed arrangement of different steel kinds, different thicknesses, and different widths can be performed, and crossed rolling is realized; the hot direct rolling rate of hot-rolled slabs is high, the heating time of cold-rolled plates is reduced, and energy is saved; and the function of six-in-one by three machines of the casting billet can be fully achieved, the 215OASP production line realizes tight combination of three processes including steel production, continuous casting, and rolling, and the goal of promoting energy saving and consumption reduction of steel products is achieved.

Description

Technical field [0001] The invention relates to the technical field of metallurgical continuous rolling, in particular to a hot rolling plan arrangement method. Background technique [0002] For a steel company's hot rolling production line, the current rolling plan management system is mainly based on hot rolling technology, relying on factors such as the variety and volume of the existing slab inventory in the slab warehouse. When formulating a rolling plan, firstly, the current inventory of the kanban billet warehouse is required, and secondly, the production is scheduled according to the contract situation of the slab, and the optimization problem of the stacking slab should be considered. The production model has the following defects: [0003] 1) The slab produced by continuous casting needs to be put in and then out of the warehouse. Sometimes a lot of stacking operations are required, and the production rhythm is slow; [0004] 2) The hot-rolling rate of hot-rolled slabs is...

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Problems solved by technology

[0003] 1) The slabs produced by continuous casting need to be put into the warehouse first, and then out of the warehouse. Sometimes, a large number of stacking operations are required, and the production rhythm is slow;

[0004] 2) The direct loading rate of hot-rolled slabs is low, and most hot-rolled slabs need to be cooled before heating, which increases the heating time of the heating furnace, wastes energy, and is uneconomical;

[0005] 3) The preparation of the production plan is rigid and inflexible, and it is difficult to prepare the mixed arrangement plan of different steel types, different thicknesses and different widths, and it is not easy to realize cross-rolling;

[0006] 4) The degree of connection between steelmaking, continuous casting and rolling processes is low

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