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  • Усиление конкурентных преимуществ производителя стали благодаря повышению качества составления графиков выплавки и разливки

Article

Усиление конкурентных преимуществ производителя стали благодаря повышению качества составления графиков выплавки и разливки

Солодовников В. В., Конвичка Д.

The article analyzes a key order fulfilment process component of steelmaking companies –melt shop and caster scheduling. The main optimization objectives of melt shop and caster scheduling are defined as: minimization of earliness and lateness of orders, maximization of tundish utilization, minimization of steel grade changes and minimization of mold width changes, minimization of stock, minimization of over grading, management of iron inventory. Key problems of scheduling in the past are analyzed. The following key problems are defined: underdeveloped optimization algorithms for the problem and insufficient computer performance.   

Based on this analysis the key provisions of a new method of melt shop and caster scheduling are proposed. This method significantly improves quality of planning. It includes the following three stages: production capacity allocation; heat building; sequencing. Several key requirements on program solution which is based on the proposed method are defined: high performance, manual changes, online visualization, prioritization of optimization objectives, scalability.  An experience of successful development and implementation of specialized software solution based on the new method at Czech steel maker is provided.

In conclusion, the results of implementation of the specialized software solution at Czech steel maker and recommendations of improvement implementation are provided.