Vasylieva L. Improving the efficiency of transportation of narrow-nomenclature large-batch steel products due to the rational formation of cargo shipments

The dissertation is devoted to solving the scientific problem of improving the efficiency of the micrologistic system of shipment of finished products of a metallurgical enterprise, taking into account external and internal factors of influence. The analysis of the current state of the problem of efficiency of functioning of the micrologistic system of shipment of finished products of a metallurgical enterprise is carried out, the purpose and objectives of the study are determined. During the analysis, it was found that transportation of narrownomenclature largebatch steel products requires improvement of transport technologies at the stage of forming cargo shipments. In the general logistics chain, the operation of the micrologistic system of shipment of finished products (MLS SFP) of a metallurgical enterprise is identified and investigated. The MLS SFP is formalized in the link of the logistics chain "rolling production - main transport" of the metallurgical enterprise. The groups of factors affecting the functioning of this micrologistic system are identified: "production technology", "warehouse processing", "load requirements". An objective function is obtained that allows combining local optimization methods and forming a methodology that will increase the efficiency of the micrologistic system for shipping finished products. The main parameters of the MLS SFP system are determined: the utilization factor of the load capacity of vehicles, the number of shipments using multiturn means of securing cargo, the duration of shipment of products to vehicles from the warehouse. A method (based on the Pareto method) for storing finished products in zones A, B and C sequentially located from the cargo front has been developed. A method for optimal formation of car shipments has been developed, which reduces the required amount of rolling stock for transportation and total delivery costs. The methods of organizing and planning the operation of the transport and warehouse system of an industrial enterprise have been improved. A new method for determining the optimal amount of multiturn fastening methods in the organization of the delivery process of steel products has been developed, which is based on the logistics approach, methods of statistical analysis and simulation modeling according to the criterion of minimum logistics costs. The proposed procedure for determining the most effective management of the freight front of railway transport, which is based on the use of simulation modeling, reduces costs in the process of shipping rolled metal products to wagons. A method of simulation modeling of the loading process on road transport has been developed, which takes into account the stochastic nature of the weight of individual cargo spaces, and allows you to increase the efficiency of delivery by increasing the utilization factor of the load capacity of cars. The improving the efficiency of the micrologistic system of shipment of finished products was achieved by minimizing total logistics costs. The results of the research made it possible to increase the efficiency of the micrologistic system of shipment of finished products of metallurgical enterprises by optimizing the formation of cargo shipments.