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Afișează articolele 498-517 of 552

    • The Management of Work Risk for a Plate Rolling mill Machine 

      Bordei, Marian; Dragomir, Ștefan; Drăgan, Viorel (Universitatea "Dunărea de Jos" din Galați, 2013)
      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 ...

    • The Mechanism of Phase Transformation to Obtain Zinc-Iron Coatings 

      Radu, Tamara; Balint, Simion; Mitoșeriu, Olga (Universitatea "Dunărea de Jos" din Galați, 2009)
      Important changes in the ratio of constitutive phases take place during heating of galvanized parts due to Zn coating layer changed into Zn-Fe alloy. The work deals with a mathematical correlation between diffusion ...

    • The Modern State of Works in Field of Electron-Beam Technology of Melting and Evaporation of Metals and Non-Metals in a Vacuum 

      Grechanyuk, I.N.; Grechanyuk, N.I.; Croitoru, G. (Universitatea "Dunărea de Jos' din Galați, 2008)
      In developing of new processes for growing metal (composite) films, the main attention is given to controlling the metal vapour flows: through energy state of the condensing particles, their molecular composition, ...

    • The Monitoring of Chattering in Cold Rolling Mill System with Stands for Thin Strip 

      Dragomir, Ștefan; Dragomir, Georgeta; Spânu, Constantin (Universitatea "Dunărea de Jos" din Galați, 2007)
      Each system (stand – driving) and the continuous rolling line to which it belongs have its own functional and energetically parameters. To reduce any faults of the strip surface it is also necessary to check (eventually ...

    • The Pre-Biblical Metallurgical ART on the Biblical Territory 

      Moisa, Strul; Wenkert, Rodica (Universitatea "Dunărea de Jos" din Galați, 2013)
      The Old Testament describes in detail the metallurgical achievements, both in the period before the conquest and colonization of the promised land (mostly related to the manufacturing of the Tabernacle, in this sense, ...

    • The Process Insolved in Making the Medals 

      Buruiană (Negoiță), Daniela; Florea, Gheorghe; Chiriac, Alexandru (Universitatea "Dunărea de Jos" din Galați, 2010)
      This paper presents a method that was experienced in the laboratory to manufacture a medal. There are three general techniques used to make medals: repoussé, striking and casting. Serigraphy technique is the most chosen ...

    • The Properties of Hardened Lead 

      Potecașu, Florentina; Potecașu, Octavian; Drugescu, Elena (Universitatea "Dunărea de Jos" din Galați, 2005)
      Lead hardened through oxide scattering is investigated as raw materials for the fabrication of the support gratings of lead accumulators in order to increase their life service. For the preparation of lead powder hardened ...

    • The Protective Behaviour Titanium Nitride Coatings 

      Constantinescu, Stela (Universitatea "Dunărea de Jos" din Galați, 2015)
      The experiments conducted to obtain a thin layer of nitride through the vapour chemical deposition method have followed an original path to obtain TiN directly in the working room thus avoiding the import of these ...

    • The Quality of Metal Products Made on CNC Machines 

      Pușcaș (Popescu), Nela (Universitatea "Dunărea de Jos" din Galați, 2017)
      Contemporary market must provide products that adapt to customer needs, which requires large investments and long-term employment. Producers have to take care of the buyers’ different way of thinking. The quality of ...

    • The Steam-Secondary Source of Energy in Metallurgy 

      Ivănescu, Lilica (Universitatea "Dunărea de Jos" din Galați, 2009)
      The paper is focused on a study of how to use the steam from recovery boilers of LD converters to produce electricity in turbine generators and heat in a heat network.

    • The Structural Design Improvement of a Twin-Hull Ship 

      Presură, Adrian; Chirică, Ionel; Elena-Felicia, Beznea (Universitatea "Dunărea de Jos' din Galați, 2015)
      The paper is focused on the strength analysis of the structure of twin-hull ships, particularly a passenger catamaran. Catamarans have some advantages against conventional monohulls: larger deck area and cargo volume, ...

    • The Structural Optimizing of Metallurgical Installations and Mechanisms 

      Munteanu, Viorel; Sava, Simona (Universitatea "Dunărea de Jos" din Galați, 2006)
      The structural optimizing of used mechanisms in the machines construction and metallurgy through the further liberty degrees creation is essential projection problem, as it enters the closing mechanisms case with sliding ...

    • The Study of Metal-old Wood Interactions Under the Influence of Pedological Factors 

      Sandu, Ion; Hayashi, Mikiko; Quaranta, Marta (Universitatea "Dunărea de Jos" din Galați, 2008)
      In the manufacture of wood objects, for binding and strengthening were used nails, cramps and other metallic elements, which in the archaeological site suffered degradation and deterioration processes, specific to ...

    • The temperature Effect on Severely Deformed Aluminium by High Pressure Torsion 

      Gurău, Carmela; Gurău, Gheorghe; Cănănău, Nicolae; Potecașu, Florentina; Dogaru, Victor; Fernandes, FM Braz (Universitatea "Dunărea de Jos" din Galați, 2009)
      The process of deforming materials started to attract the interest of the researchers after the development of the severe plastic deformation techniques. A number of aluminium samples were severe deformed by HPT method ...

    • The Unusual Electomagnetic Proprieties of Fabric Reinforced Epoxy Composites 

      Bunea, Marina; Bria, V.; Cîrciumaru, A.; Bîrsan, I. G. (Universitatea "Dunărea de Jos" din Galați, 2015)
      In this research, the electromagnetic behavior of four composite materials was investigated as an important issue of composite researchers is to control the electrical properties of polymer matrix composites. The four ...

    • The Use of Systems Analysis in Environmental Engineering 

      Paraschiv, Spiru; Paraschiv, Lizica Simona; Ion, Ion V. (Universitatea "Dunărea de Jos" din Galați, 2005)
      The depletion of energy resources has been of primary concern in the `70s and `80s. In recent years, the decline of the environment due primarily to our energy-related activities has become severe and raises serious ...

    • The Use of Ultrasound in the Treatment Process of Wastewater. A Reviuw 

      Matei, Nicoleta; Scarpete, Dan (Universitatea "Dunărea de Jos" din Galați, 2015)
      In this paper, different types of ultrasound devices for the treatment process of wastewater are presented. The use of ultrasound in treatment processes is a method of perspective, an alternative to conventional methods. ...

    • The Value of the Structural Remanence and Thermic Tensions in the Forged Pieces 

      Ciurea, Aurel; Bordei, Marian (Universitatea "Dunărea de Jos" din Galați, 2005)
      The plastic deformation, the heating and the cooling of the pieces submitted to plastic deformations acumulate remanent tensions inside the pieces. Knowing the environmental where they are produced and avoiding its ...

    • Theoretical Study regargind the Flow Conditions for Alloys Through thin Channels 

      Mărginean, Ioan; Verdeș, Bogdan-Alexandru; Cocolas, Sorin-Adrian (Universitatea "Dunărea de Jos" din Galați, 2010)
      A common tool used to demonstrate the phenomenon of movement of liquids through thin channels is the capillary tube. When the lower end of the tube is placed vertically in a liquid (such as water), it forms a concave ...

    • Thermal Analysis of Inoculated Grey Cast Irons 

      Chisamera, Mihai; Stan, Stelian; Riposan, Iulian; Ştefan, Eduard; Costache, George (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      A research was done to investigate the effect of 0.05…0.25wt.% addition rate of Ca, Zr ,Al – FeSi alloy, in ladle and in-mould inoculation of grey cast irons. In the present paper, the conclusions drawn are based on ...