http://arthra.ugal.ro/handle/20.500.14043/25999 2026-04-05T17:28:04Z http://arthra.ugal.ro/handle/20.500.14043/26014 Measures to Optimize Job Security "Crane machinists who Transport Liquid Steel" Drăgan, Viorel; Dragomir, Ștefan; Bordei, Marian The starting point in optimizing the prevention of occupational accidents and occupational diseases for a crane machinist for the transport of liquid steel is the risk assessment of the system. Risk assessment involves the identification of all risk factors in the analyzed system and quantifies their size based on the combination of two parameters: the maximum possible consequence severity and frequency on the human body. These are partial risk levels for each risk factor respectively overall levels of risk for the entire analyzed system (job). According to the European standard, in Romania, "the factors taken into consideration for the risk assessment" are: a) the probability of an injury or damage to health; b) the maximum expected severity of the lesion. The Annals of "Dunarea de Jos" University of Galati Fascicle IX Metallurgy and Materials Science N0. 3 – 2013, ISSN 1453 – 083X 2013-01-01T00:00:00Z http://arthra.ugal.ro/handle/20.500.14043/26013 Effect of Mean Diameter Size of Disperse Phase on Morphology and Corrosion Resistance of Phenol-Formaldehhyde Resin/Zn Coatings Ciubotariu, Alina; Benea, Lidia; Ponthiaux, Pierre The present work has the purpose of obtaining composite coatings using phenol – formaldehyde (PF) resin electrodeposited with zinc. The phenol – formaldehyde resin/Zn coatings were electrodeposited from a suspension of PF resin particles with two dimensions for mean diameter size of particles (0.1 – 5.0 μm and 6 – 10 μm) in aqueous zinc sulphate electrolyte. Suspension was prepared by adding 10 g/L PF resin particles into solution. The thickness and morphology of the coatings were investigated by SEM method. By adding PF resin in zinc electrolyte for electrodepositing we obtained a very good distribution of PF resin particles on zinc surface. The electrochemical behavior of the layers in the corrosive solution was investigated by electrochemical methods. As electrochemical test solution 0.5M sodium chloride was used in a three electrode open cell. It was observed that by adding PF resin particles in zinc electrolyte for electrodeposition were obtained composite layers more resistant to corrosive attack of 0.5M NaCl than pure zinc obtained from electrodeposition at the same parameters for electrodeposition. Corrosion rate for pure zinc coatings was 72.05 μm/year versus 15.34 μm/year for coatings with mean diameter size of particles 0.1 – 5.0 μm, respectively 10.11μm/year for coatings with mean diameter size of particles 6 – 10μm. Values of polarization resistance obtained with both electrochemical methods (potentiodynamic polarization and electrochemical impedance spectroscopy) were in a very good agreement. The Annals of "Dunarea de Jos" University of Galati Fascicle IX Metallurgy and Materials Science N0. 3 – 2013, ISSN 1453 – 083X 2013-01-01T00:00:00Z http://arthra.ugal.ro/handle/20.500.14043/26012 Thermomechanical Process Simulation to Predict Processing of Mechanical Properties of Alloys Al-Zn-Mg-Cu Neacșu, Marian-Iulian; Vasilescu, Elisabeta; Hanganu, Doru This paper presents how to perform simulation (prediction) mechanical properties of aluminum alloys of the system Al-Zn-Mg-Cu. Graphical interface that can predict the mechanical properties studied was performed using MATLAB software version 6.5 based on mathematical equations mathematical models obtained by the mathematical modeling of thermomechanical treatment process studied. This GUI can be established before the thermomechanical treatment parameters to achieve a favorable complex mechanical properties. The Annals of "Dunarea de Jos" University of Galati Fascicle IX Metallurgy and Materials Science N0. 3 – 2013, ISSN 1453 – 083X 2013-01-01T00:00:00Z http://arthra.ugal.ro/handle/20.500.14043/26011 The Management of Work Risk for a Plate Rolling mill Machine Bordei, Marian; Dragomir, Ștefan; Drăgan, Viorel Arcelor Mittal is the leader on important iron and steel global markets. This company has a performant system for research, for iron and steel plate production and has a top network for distribution, too. The company has production units in 20 countries on 4 continents, in all key markets of iron and steel industry. Arcelor Mittal has committed to operating in its units in a responsible manner and has taken care of the health, safety and welfare of its employees. At the same time, it is committed to acting with respect to sustainable development. The Annals of "Dunarea de Jos" University of Galati Fascicle IX Metallurgy and Materials Science N0. 3 – 2013, ISSN 1453 – 083X 2013-01-01T00:00:00Z