Afișează articolele 21-40 of 552

    • Software used at Castings Production 

      Marginean, Ioan; Bratu, Constantin; Cocolas, Sorin-Adrian (Universitatea "Dunărea de Jos" din Galați, 2009)
      The foundry industry has been developed worldwide, a number of software that can assist the design work and various processes in the production of castings. Current usage of such software by metallurgical engineers is ...
    • Generation, Morphology and Mineralogy of the Dust Particles from Off-Gas Blast Furnace 

      Ciocan, Anișoara; Potecașu, Florentina; Ivancea, Liliana (Universitatea "Dunărea de Jos" din Galați, 2009)
      In order to elucidate the morphology and mineralogy of the dust from blast furnace, the fundamental aspects of its generation process were studied. A dust generated by the dry dedusting step of the cleaning process for ...
    • Intercritical Thermomechanical Treatments of the Microalloyed Steel Products for Welded Structures 

      Vasilescu, Elisabeta; Doniga, Ana; Neacșu, Marian (Universitatea "Dunărea de Jos" din Galați, 2009)
      This paper shows the laboratory experiments made on several grade steels by applying some intercritical thermomechanical treatments; Two variants were used: “down-up” thermomechanical treatment with heating and rolling ...
    • Monitoring of the Rolling Mill Vibration 

      Dragomir, Ștefan; Dragomir, Georgeta; Bordei, Marian (Universitatea "Dunărea de Jos" din Galați, 2009)
      These researches show the influence of mill vibration on the thickness profile of the stainless steel sheet. The alloy elements like Ni and Cr inside the stainless steel could amplify the rolling mill vibration and ...
    • Behavior of Ni/al2O3 Nanocomposite Thin Layers in Corroding Environment 

      Gheorghieș, c.; Gheorghieș, Livia; Atanasiu, V.O. (Universitatea "Dunărea de Jos" din Galați, 2009)
      This paper investigates the effects of adding alumina nanoparticles in the electrolyte bath on surface topomorphologies and structure of electrodeposited nickel. The influence on the corrosion process in NaCl solutions ...
    • Reseaeches Regarding the Elements Loss Through vaporization During the Elaboration Process LD Converter 

      Ivănescu, Alexandru; Doniga, Ana; Vasilescu, Elisabeta; Ivănescu, Lilica (Universitatea "Dunărea de Jos" din Galați, 2009)
      The paper presents a series of researches regarding the vaporization of the component elements of the metallic bath and slag during refining in LD converter. Also, the main factors which influence the vaporization process ...
    • Influence of Ph galvanic Baths on the Nickel Deposits 

      Poroch-Serițan, Maria; Gutt, Gheorghe; Severin, Traian; Bobu, Maria (Universitatea "Dunărea de Jos" din Galați, 2009)
      The influence of pH on cathodic and anodic current efficiency, surface quality and morphology of nickel deposit in the electrolyte solutions of the Watts bath type was investigated. Cathodic current efficiency of nickel ...
    • Waste Minimization by Reuse and Recycling 

      Negoiță, Daniela L.; Ion, Ion V. (Universitatea "Dunărea de Jos" din Galați, 2009)
      Recently, pollution prevention directs attention towards the elimination or reduction of undesired by- products within the production process itself before treatment. On the long term, pollution prevention through waste ...
    • Modelling, Operation and Control of Multiterminal DC Connection for Offshore Wind Farms 

      Drăgan, Mircea Viorel; Drăgan, Cristina Mădălina; Drăgan, Crina Violeta; Hanganu, Doru (Universitatea "Dunarea de Jos" din Galați, 2009)
      Renewable energy systems are tending to become more and more present in the energy market and wind power has already proven its potential. Wind parks of thousands of MW are planned to be place into sea faraway from the ...
    • Alumina Powder Properties Obtained by Neutralization Process of Sodium Aluminate 

      Perušic, Mitar; Mićić, Vladan; Obrenović, Zoran (Universitatea "Dunarea de Jos' din Galați, 2009)
      Today, the most production of alumina is used for aluminum production [1, 2] (metallurgy alumina), minor production of alumina is used for special purpose, as fire-resistant materials, electro porcelain and etc., and ...
    • Mathematical Model Cooling Agglomeration Ferrius in Layer 

      Vasiliu, Adrian (Universitatea "Dunărea de Jos" din Galați, 2009)
      Mathematical model is based on discretization agglomeration areas layer deposited on very small. The τ Δ cooling time and the elements of space and elements xi time relationship is discretization as volume control. Based ...
    • Optimisation of Refractory Components of Sliding Gate Mechanism for Continuous Casting 

      Munteanu, Viorel (Universitatea "Dunărea de Jos" din Galați, 2009)
      New design techniques have been developed to optimize refractory components of sliding gate mechanism for continuous casting of steel. The overall objective is to increase CC productivity as well as steel quality by using ...
    • Development of Blade Design for Small Hawt Adapted for Lower Values of Wind Speed 

      Badea, Nicolae; Cazacu, Nelu (Universitatea "Dunărea de Jos" din Galați, 2009)
      The paper aims at studing, theoretically and experimentally, the influence of turbines blade profile on output power, in order to decrease effective domain to smaller wind speed, specific to Galati area. Studies have ...
    • Obtaining and Characterisation of Thermoresistive Pigments 

      Sandu, Andrei Victor; Vasilache, Violeta; Sandu, Ion; Saviuc, Mihaela; Sandu, Ioan Gabriel; Popa, Ioan Marcel (Universitatea "Dunărea de Jos" din Galați, 2009)
      The paper describes the obtaining and chemical and physico-structural characterisation of a green thermoresistive pigment. The pigment is made of ZnO dopped with Sb, Bi, Cr, Co and Fe oxides and it is used at mosaics and ...
    • Experimental Research Regarding the Obtaining of Obtaining of Friction Elements 

      Petrea, Ionel; Bașliu, Vasile; Petrea, Ionel; Bașliu, Vasile (Universitatea "Dunărea de Jos" din Galați, 2009)
      Friction materials are used as bimetallic friction elements, consisting of a friction material layer sintered on a steel backing. Using the electron microscopy techniques (microprobe analyzer) some of the diffusion ...
    • Corrosion Behaviour of Tombac Used in Cult Objects Manufacturing 

      Hagioglu, P.; Gheorghieș, c.; Cantaragiu, A.M.; Boiciuc, R.; Țigău, N. (Universitatea "Dunărea de Jos" din Galați, 2009)
      Corrosion of metals and metallic alloys is due to their thermodynamic instability in relation to their oxidation form. Corrosion tests performed in this work simulate the exposure conditions in different environments of ...
    • Variation of Mechanical Characteristics for Thin Wall Tubes Processed in Ultrasonic Field 

      Susan, Mihai; Achiței, Cristian; Ștefanică, Roxana Gabriela; Gavrilă, Bogdan Lucian (Universitatea "Dunărea de Jos" din Galați, 2009)
      The paper presents the variation of mechanical characteristics of resistance and plasticity for thin wall tubes made of stainless steel 10TiNiCr180, processed in ultrasonic field. Decrease of mechanical characteristics ...
    • Redesigning a Jaw Crusher Using Value Analysis. Part II 

      Chichernea, Florin; Chichernea, Alexandru (Universitatea "Dunărea de Jos" din Galați, 2009)
      The paper presents a complete study of VALUE ANALYSIS applied concretely to a selected piece of equipment. The phases and ITERATIVE operation of the Value Analysis method are presented. Value Analysis combines both ...
    • 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 ...
    • Establishing the Constitutive Law of a CrMo Alloyed Steel 

      Cănănău, Nicolae; Alexandru, Petrică; Gurau, Liviu; Gurău, Gheorghe (Univrsitatea "Dunărea de Jos" din Galați, 2009)
      The paper shows the results of the researches for establishing the equation of the deformation behavior of alloyed steel with chromium and molybdenum. The behavior law is established in the experimental way, using the ...