A Method for Setting and Automatically Switching Master Contract Process of Iron and Steel Enterprises

Abstract

The invention provides a method for setting and automatically converting a master contract process of an iron and steel enterprise, and relates to the technical field of metallurgical automatic control. This method establishes a mathematical model of the distribution relationship of the contract on the unit by determining the adaptation relationship between the customer's contract requirements and the unit parameters. Under the condition of ensuring the process constraints, the model is used as the basis for accurate calculation, and the algorithm based on the population evolution strategy is adopted. architecture, and design a discrete encoding (decoding) algorithm for solving the chromosome manufacturing strategy, decode the algorithm results to determine the process allocation plan for each contract, and finally perform the conversion operation of the main and secondary processes to achieve the overall optimization of the contract process . The method proposed by the invention can balance the production capacity distribution between steelmaking and hot rolling parallel units, coordinate the supply relationship between steelmaking and hot rolling processes, reduce cross logistics, improve equipment utilization, and reduce production and inventory costs.

Description

technical field [0001] The invention relates to the technical field of metallurgical automatic control, in particular to a method for setting and automatically converting the master contract process of an iron and steel enterprise. Background technique [0002] The production process of iron and steel enterprises not only involves serial production processes with front and rear material supply relationships, but also multiple parallel equipment in the same production process. Iron and steel enterprises organize production according to contracts. Before each contract is put into production, one or more alternative process routes need to be designed according to product quality requirements, which is called manufacturing process flow, or process for short. In the actual production process, it is necessary to determine which process is the main process and which process is the sub-process. Usually material preparation and production organization, especially production planning...

AI Technical Summary

Problems solved by technology

[0005] (1) The manual method is operated after discovering that the distribution of contracts in different workshops of steelmaking (or hot rolling) is unbalanced, so the manual process conversion is a passive process, which is not considered integrated with the preparation of production planning and scheduling, and lacks foresight sex

[0006] (2) The manual method sorts all contracts through simple rules, and then uses the serial sequential strategy to select contracts for process conversion. From the perspective of optimization, this serial sequential strategy is extremely short-sighted. Every time a contract is converted The process only considers the current optimization performance, and does not consider the impact of the subsequent contract process conversion on the global optimization performance

[0007] (3) The manual method only considers the capacity balance indicators of different steelmaking workshops (and different hot rolling workshops) through qualitative analysis, and does not consider other indicators (including cross-material flow, batch production, etc.) Therefore, the effect of process conversion depends to a large extent on the operation level of business personnel, and the solution to this technical problem lacks quantitative and scientific

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