Now showing items 1-20 of 22

    • Automatic Settlement System of Liquid Steel Level Into the Tundish for Continuous Casting Machine 

      Munteanu, Viorel (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      The increasing quality of steel and a reliability indices of the afferent installations need an automation system for continuous steel casting machines. This paper presents an original solution of automatic settlement ...
    • Decorative composite Layers 

      Mitoșeriu, Olga; Potecașu, Florentina; Drugescu, Elena; Vlad, Maria (Universitatea "Dunărea de Jos" din Galați, 2008)
      Part of the materials used in the chemical industry, metallurgical, machine construction, can be coated, as with time it occurs either a decrease of its properties, or even a process of advanced faulting, because of the ...
    • Electrochemical Deposition and Sem Surface Morphology of Co and UHMWPE/Co Composite Layers 

      Benea, Lidia; Mardare-Pralea, Marinela; Cojocaru, Paula (Universitatea "Dunărea de Jos" din Galați, 2009)
      The work aims at obtaining composite coatings in cobalt matrix with dispersed phase UHMWPE (ultra high molecular weight polyethylene) and at characterizing the surface morphology analyse by SEM, the thickness of the ...
    • Evolution of some Structural Fine Parameter in the Superficial Layer During Low Cycle Fatigue Process 

      Măcuţă, Silviu (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      Using laminate samples, investigations have been realized at variable solicitation of pure bending on a patented machine. The machine has two working places and it can be adjusted for different deformations, frequencies ...
    • Fatigue Degradation of Materials as a Tool for Damage Assessment 

      Silva, Filipe (Universitatea "Dunărea de Jos" din Galați, 2008)
      Damage assessment of components or systems is strongly related to the way components fail. Thus, an appropriate understanding of failure degradation of components is necessary. Furthermore, most of the failures are related ...
    • Hardening of the Grey Cast Iron Through the Vibrating Electrode Method Using a WC Electrode and in Combination with Ti Electrode 

      Perju, Manuela Cristina; Nejneru, Carmen; Răileanu, Tudor; Axinte, Mihai; Hopulele, Ioan (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      There have been tested samples of grey cast iron, the hardening being made through WC coating through the vibrating electrode method with a layer, two layers and through double layers combined with Ti and TiC. Besides ...
    • Hydrodynamic Aspects on EAF's Smelt Metallic Mirror 

      Mustaţă, Ruxandra Ioana; Mustaţă, Costică T. (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      Using the Physical and Mathematical knowledge, a new approach to EAF bath’s hydrodynamic aspects is proposed to be developed in this paper. Experimental results and a mathematical equation package have been concluded ...
    • Influence of the Chemical Composition on the Behavior of Austenitic Stainless Steel in Fliid Layer Nitriding Process 

      Dima, Ovidiu (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      The main factors that influence the stainless steel behavior to the nitriding process are: chemical composition, nitriding temperature, treatment time. Researches have revealed that, with low temperature nitriding, the ...
    • Influence Pressure and Size Particle to Extraction by CO2 

      Micic, Vladan; Lepojevic, Zika; Jotanovic, Milovan; Tadic, Goran; Mandic, Boris (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      Supercritical fluid extraction (SFE) is an efficient extraction technique for the separation of various organic compounds from herbs, or more generally, from plant materials. These proporties of SFE make the products ...
    • Magnetical Properties of Silicon Steels Used for Electrotechnical Industries 

      Doniga, Ana; Vasilescu, Elisabeta; Istrate, Miltiade (Univeristatea "Dunărea de Jos" din Galaţi, 2008)
      This paper-work shows the laboratory experiments achieved on more silicon steel plates, where the magnetic ranges were spot- lighted by particular technical requirements. On the same plates the texture analyses were made ...
    • Mass Erosion and Material Transfer at the Deposition of Layers by Inverse Electroerosion 

      Alexandru, Adrian; Huţanu, Marius; Iacob Strugaru, Sorin (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      The deposition and alloying of the superficial layers by inverse electroerosion or by electric spark given by a vibrating electrode permits to obtain a large scale of properties at the surface of metallic materials from ...
    • Mechanical Resistance on Cold Welding Achievement Between Cogged Sufaces 

      Georgescu, Bogdan; Georgescu, Valeriu (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      Cold welding on cogged surfaces is a technology developed by researchers from Robotics and Welding Department, Dunarea de Jos University of Galati. Easily deformable samples, having plane surfaces, are pressed on cogged ...
    • On the Corrosion Resistance of Cu-Mo Composite Materials Obtained by PVD Method 

      Grechanyuk, V.G.; Grechanyuk, N.I.; Orac, L.; Denisenko, V.A. (Universitatea "Dunărea de Jos" din Galați, 2008)
      The Cu – Mo composite materials have been obtained by electron flow vaporizing followed by vapor –phase condensing. Researches have shown that corrosion resistance in wet environment varies with the content of ...
    • On the Prediction of the Strip Shape in a Cold Rolling Mill (1700 mm) 

      Dragomir, Ştefan; Dragomir, Georgeta; Bordei, Marian (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      In this paper is shown a new way for predicting the precision of laminated strip in a cold rolling mill (1700 mm). The increasing demands on the quality of rolled strip; need new technology for monitoring the strip shape, ...
    • Researches Concerning the Deformation Behaviour of a Low Carbon Steel 

      Cănănău, Nicolae; Alexandru, Petrică; Gurău, Gheorghe; Ionel, Petrea (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      The paper shows the results of the researches meant to establish the equation of deformation behavior of low carbon steel. The behavior law is established by the experimental way, using the torsion test method. The ...
    • Study of Severe Plastic Deformation by Torsion Test 

      Gurău, Carmela; Gurău, Gheorghe; Cănănău, Nicolae (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      High Torsion Pressure (HPT) is an advanced tool for inducing very significant grain refinement in a wide range of metals. In this research were studied parameters of severe plastic deformation using the torsion test. The ...
    • Surface hardening for Low Carbon Steel (A3k) by Yag: Nd Pulse Laser Thermal Activation 

      Cazacu, Nelu; Sava, Liliana; Dobrovici, Sorin; Baclea, Adolf (Universitatea "Dunărea de Jos" din Galați, 2008)
      The paper is based on experiments for surface hardening on A3k (low carbon steel) samples using YAG:Nd pulse laser. A small x-y moving system conducted by PC was made for sample scanning, relative to fixed focused laser ...
    • Surface Hardenining for 38MoCrA109 Steel Using Fluidized Bed Nitriding 

      Baclea, Adolf; Dobrovici, Sorin; Cazacu, Nelu (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      The paper is based an nitriding experiments made in a fluidized bed laboratory furnace. Fluidization was obtained in a steel refractory retort by solid granular (burned fire clay) and fluid (mixture of ammonia and ...
    • The Conservability of Old Wood at the Contact with Metallic Structural Components from Artifacts 

      Sandu, Ion; Vasilache, Viorica; Hayashi, Mikiko; Vrânceanu, Narcisa; Ciocan, Adelina; Sandu, Andrei Victor (Universitatea "Dunărea de Jos" din Galați, 2008)
      The paper presents the impact of metallic pieces being in contact with wood, as structural elements, used in obtaining artifacts. The paper studies, based on old samples, the reciprocal effect obtained at the wood-metal ...
    • The Influence of Cold Rolling on the Mechanical Characteristics for Drawing Steels 

      Potecaşu, Octavian; Potecaşu, Florentina; Alexandru, Petrică; Radu, Tamara (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      The paper presents the changes of the mechanical and technological characteristics of steel for deep drawing, cold rolled and recrystallization heat treated. The research was conducted on samples taken from cold rolled ...