Automatic production optimizing method and system of cold rolling sulfuric acid refining and roller milling integral unit

Abstract

The invention relates to an automatic production scheduling optimization method of an integral unit for cold rolling, acid pickling and rolling, and a system, which belong to the technical field of information of metal material processing; the method comprises the following steps of: (1) establishing initial state of equipment, setting the lower limit of flowing to the rolling quantity of a processing plate in each unit of plans, setting the biggest rolling capability and the least rolling requirement of a working roll of a rolling mill and limiting the flowing direction and the specification of acid rolling coil; (2) selecting coil which meets the requirement of specification range as acid rolling candidate coil; (3) forming an acid rolling initial feasible production scheduling plan, leading the switching cost between the adjacent coils in the plan to be little as much as possible and leading the weight of the coil in the plan to be close to the rolling capability of the roll as much as possible; (4) carrying out optimization and adjustment to the initial and feasible production scheduling plan of an acid rolling unit, carrying out adjustment of the coil and the candidate coil in the production scheduling plan and leading the objective function value of a system model to decrease under the condition of meeting the constraint condition of the system model. The method and the system of the invention reduces the production cost effectively, improves the quality of acid rolling products and gives full play to the production capability of the rolling mill.

Description

technical field [0001] The invention belongs to the technical field of metal material processing information, and relates to automation technology, in particular to a method and system for automatically scheduling and optimizing coil production of a combined cold-rolling pickling and rolling unit for production and application in the iron and steel industry. Background technique [0002] With the increase of the production scale of various iron and steel enterprises, the domestic iron and steel market has become increasingly saturated and the competition has become more intense. Iron and steel enterprises must improve product levels and increase the added value of unit products in order to remain invincible in the stimulating market competition. Cold rolling is the final stage of the steel production process, and the steel plates processed through these processes have high added value. And cold-rolling, pickling and rolling combined unit (hereinafter referred to as "acid ro...

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Problems solved by technology

[0006] Due to the complexity of equipment process constraints, logistics balance constraints, and production capacity constraints that need to be considered in the preparation of pickling rolling plans, there will be large errors in manual production scheduling, which cannot guarantee the quality of production scheduling, and the compiled plan cannot guarantee adjacent coils. The transition is smooth, and the transition is not smooth, which will increase the loss of rolls and the number of roll changes, resulting in increased costs and affecting production efficiency; at the same time, it takes a lot of time to consider how to arrange to meet various The logistics balance of the downstream unit affects the normal production of the subsequent unit

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