Dragos Marcu

EAF Management Optimization

The article presents the main advantages of electric arc furnace (EAF): it has a great contribution to reintroduce significant quantities of reusable metallic materials in the economic circuit, it constitutes itself as an important part in the Primary Materials and Energy Recovery (PMER), good productivity, good quality / price ratio, the possibility of developing a wide variety of classes and types of steels, including special steels and high alloy. In this paper it is presented some important developments of electric arc furnace: vacuum electric arc furnace, artificial intelligence expert systems for pollution control Steelworks. Another important aspect presented in the article is an original block diagram for optimization the EAF management system. This scheme is based on the original objective function (criterion function) represented by the price / quality ratio. The article presents an original block diagram for optimization the control system of the EAF. For designing this concept of EAF management system, many principles were used.

Marketing Management Elements

The article takes as a starting point several complementary definitions of marketing. Also present several key points related to marketing policy: defining the position that the company will occupy on the market with respect to competition, fixing the image with what will approach the market, achieving a balance between turnover rates profit and expenses as a condition for the survival of the company. In below article it is proposed an original concept of marketing management. This concept takes into consideration on the one hand correlations between company position in the market definition and on the other hand the image received by customers. The ultimate goal of this original concept of marketing management is to ensure an effective balance between: the turnover rate of profit and expenses of the company.

Management elements for the spatial organization of enterprises from the metallic materials industry

The spatial organization of enterprises is of great importance for the metallic materials industry (metallurgy), given the diversity and complexity of the technological processes and the related equipment. In an enterprise from the metallic materials industry, there may be sections for: production, casting, forging, mechanical (hot and / or cold) processing, assembly etc. for the different stages of the technological process related to the products to be made. The article presents theoretical and practical elements regarding the management of the spatial organization of enterprises in the metallic materials industry. The principles and methods of spatial organization are presented and analyzed. These principles and methods are based on the biunivocal relation between the functional and constructive changes related to the technologies and equipment (machinery, aggregates) specific to the metallic material industry. Prescribing (establishing) the objective function (OF) of the technological processes modeling system in the metallic materials industry is based on the qualitative economic analysis of these processes.

Elements of the electric arc furnace’s environmental management

The paper presents a theoretical and experimental analysis of the polluting generating mechanisms for steel making in the Electric Arc Furnaces (EAF). The scheme for the environment’s polluting system through the EAF is designed and presented in this paper. The ecological experimenting consisted of determining by specialized measures of the dust percentage in the evacuated gases from the EAF and of thereof gas pollutants. From the point of view of reducing the impact on the environment, the main problem of the electric arc furnace (EAF) is the optimization of the powder collecting from the process gases, both from the furnace and from the work-area. The paper deals with the best dependence between the aggregate’s constructive, functional and technological factors, which are necessary for the furnace’s ecologization and for its energetically-technologically performances increasing.The paper presents a theoretical and experimental analysis of the polluting generating mechanisms for steel making in the Electric Arc Furnaces (EAF). The scheme for the environment’s polluting system through the EAF is designed and presented in this paper. The ecological experimenting consisted of determining by specialized measures of the dust percentage in the evacuated gases from the EAF and of thereof gas pollutants. From the point of view of reducing the impact on the environment, the main problem of the electric arc furnace (EAF) is the optimization of the powder collecting from the process gases, both from the furnace and from the work-area. The paper deals with the best dependence between the aggregate’s constructive, functional and technological factors, which are necessary for the furnace’s ecologization and for its energetically-technologically performances increasing.

Elements of the quality management in the materials’ industry

The criteria function concept consists of transforming the criteria function (CF) in a quality-economical matrix math MQE. The levels of prescribing the criteria function was obtained by using a composition algorithm for three vectors: T vector – technical parameters’ vector (ti); Ē vector – economical parameters’ vector (ej) and P vector – weight vector (p1). For each product or service, the area of the circle represents the value of its sales. The BCG Matrix thus offers a very useful map of the organization’s service strengths and weaknesses, at least in terms of current profitability, as well as the likely cash flows.

Quality and Environmental Evaluation Methodsfor Metallic Materials Industry

We present in our article some original quality evaluation methods for Metallic Materials Industry (MMI). Also we present categories of environmental performance indicators. They should therefore be cost-effective and appropriate to the size and type of organization and its needs and priorities. The paper presents the main methods of technical-economical analysis of the quality of the metallic materials industry. There are mainly presented and analyzed a specific analysis models. Both the analysis methods for products (A) and the ones for companies (B) are presented in comparison. The main results consist of the correlation between the technical – economical analysis methods and the mathematical models used. Also we present in our article the main categories of environmental performance indicators: comparability, balance between problematic (bad) and prospective (good) areas, continuity, timeliness, clarity, operational performance indicators, management performance indicators, environmental condition indicators.

Some Aspects about Product Management of Electric Arc Furnace Elements

The methodology of establishing an Electric Arc Furnace (EAF) and technological plant’s best management strategy is based on the “technological process – technological plant” interdependences. The paper presents the best management of a plant and consists of an assembly of operations, measures and decisions, established and applied in order to make the technological process more efficient from the technical – economical point of view. We present constructive and functional description of an Electric Arc Furnace such as: refractory masonry; metallic construction; electric installation. We also present the best management of a plant consisting of an assembly of operations, measures and decisions, established and applied in order to make the technological process more efficient from the technical–economical point of view, Electric Arc Furnace management included.