Order logistics for discrete and continual production processes in industry 4.0 conditions

The basic goal of the article is to define changes in production logistics and its essential part of order logistics at the transformation of the production system from an automated management system with the participation of first level logistics, managers and machine operators to a fully automated, unattended production system and at the same to define and compare the differences between discrete and continuous-discrete production typical for mining, metallurgical production processes. The solution applied the methodology of comparative analysis of the comparison of current systems of order logistics [1, 2], and its operation in terms of Industry 4.0. There were applied principles of production planning and programming of numerical control (NC) machines and robots and programcontrolled fully automated production processes, especially in the continuous character of processes for the design of a new algorithm of custom logistics [3]

Possibilities for reducing the negative impact of the number of conveyors in a coal transportation system

Trakasti transporteri se obično primjenjuju u transportu ugljena, bilo da se koristi u rudnicima ili od rudnika do najbližeg potrošača. Ovi sustavi transporta često imaju veliki broj transportnih jedinica, što može imati negativan utjecaj na pouzdanost sustava i okoliš. U ovom radu se razmatraju mogućnosti za smanjenje broja transportera u sustavu transporta ugljena, povećavanjem duljine transportera i uz mogućnost primjene horizontalnih lukova transportera.Belt conveyors are usually applied in coal conveyance, whether the reference is made to conveyance in mines themselves or from mines to the nearest consumers. These conveyance systems have often a large number of transporting units, which may have a negative impact on the system reliability and the environment. This paper deals with the possibilities for reducing the number of conveyors in a coal conveyance system by maximizing the conveyor length and the possibility of applying horizontal bend conveyors

Heuristic model for production scheduling wide-strip rolling mill

The article deals with the methodology of creating the production schedule for wide-strip rolling mill, defining the rules, calculating types and number of campaigns, in the defined planning period, filling the campaigns, and campaigns sequence. In model creation is apply the heuristic approach, which is based on experiences of expert in production scheduling in metallurgy. On Induction thinking and analogy are defined heuristics rules. Other rules are defined with the regularities of technology, limitation and optimization criteria. Rules that we do not know resp. we do not want to be modeled we will continue to human expert

Heuristic model for production scheduling wide-strip rolling mill

The article deals with the methodology of creating the production schedule for wide-strip rolling mill, defining the rules, calculating types and number of campaigns, in the defined planning period, filling the campaigns, and campaigns sequence. In model creation is apply the heuristic approach, which is based on experiences of expert in production scheduling in metallurgy. On Induction thinking and analogy are defined heuristics rules. Other rules are defined with the regularities of technology, limitation and optimization criteria. Rules that we do not know resp. we do not want to be modeled we will continue to human expert