Afișează articolele 285-304 of 552

    • A New Vision About the Dimensioning Calculus for the Frame of the Cold Mill Machine 

      Dragomir, Ștefan; Dragomir, Georgeta (Universitatea "Dunărea de Jos" din Galați, 2005)
      Dimensioning calculus for a rolling mill machine frame, using resistance classical methods allows determines the introduction of errors .For to do a better precisely of calculus we propose to use “Finish Elements Method”. ...
    • New Welding Techology-The Cold Welding on Cogged Surfaces 

      Georgescu, Bogdan; Georgescu, Valeriu (Universitatea "Dunărea de Jos" din Galați, 2007)
      Welding by cold pressing on cogged surfaces, produces the joint of a component made from an easy deformable metal by pressing on the cogged surface of a harder metal component. Different welds between aluminium (the ...
    • Ni-P Coating on Steel Support by Electroless Method 

      Radu, Tamara; Dobrea, Andreea Georgiana (Universitatea "Dunărea de Jos" din Galați, 2017)
      The autocatalytic reduction method (electroless method) was applied to obtain the Ni-P layers with different P contents. Nickel sulfate was used as nickel ion source and as reducing agent the sodium hypophosphite. The ...
    • Noise Levels in Workplaces of Cold Rolling Mill Plant 

      Tudor, Beatrice; Ciocan, Anișoara (Universitatea "Dunarea de Jos" din Galați, 2015)
      The excessive noise exposure is one of numerous physical hazards present in the steel industry. Considerable noise develops the steel strips rolling process. In this study are presented and discussed the noise levels at ...
    • Numerical Study on Ballistic Phenomena-Part Two 

      Bălan, Vasile; Bordei, Marian (Universitatea "Dunărea de Jos" din Galați, 2016)
      The study of ballistic phenomena (interior ballistics, exterior ballistics and terminal ballistics) is an activity that involves the use of complex and at the same time very expensive equipment. Also, another aspect worth ...
    • Object Oriented Architecture for Product Information System Engineering 

      Rahali, Bilel; Abou Harb, Alaa (Universitatea "Dunărea de Jos" din Galați, 2017)
      The product information system is an organizational device for regulating the creation, circulation, use and evolution of the information assets of the product definitions. It refers to all the information that defines ...
    • 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 ...
    • Obtaining and Characterizing TIN-LEAD Coatings on Steel Band 

      Radu, Tamara; Ciocan, Anişoara; Vlad, Maria (Universitatea "Dunărea de Jos" din Galaţi, 2012)
      The experimental research was at the basis of the hot immersion coating technology with Sn-Pb alloy of the steel bands presented in the study. The characterization of these layers was achieved through microscopic analyses ...
    • Obtaining and Studying Tensile Strength for Non-Precious Alloys Based Cobalt 

      Minciună, Mirabela Georgiana; Vizireanu, Petrică; Achiței, Dragoș Cristian; Goanță, Viorel; Toma, Ștefan; Bălțatu, Mădalina Simona (Universitatea "Dunărea de Jos" din Galați, 2014)
      This paper presents aspects of obtaining non-precious dental alloys of Co-Cr-Mo alloys system and experimental tests to determine tensile strength, carried on standard flat specimens.
    • Occupational Risk Management in Industry 

      Radu, Tamara; Vlad, Maria; Drăgan, Viorel; Başliu, Vasile; Istrate, Gina Genoveva (Universitatea "Dunărea de Jos" din Galaţi, 2018)
      Occupational risk management is part of the occupational health and safety at workplace. Occupational risk management has a specific component relating to the assessment of the risk and a common component of all types ...
    • On the Constitutive Equation of a Low Carbon Steel 

      Canănău, Nicolae; Alexandru, Petrică; Ionel, Petrea; Gurău, Gheorghe (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      The paper shows the results of the researches concerning the equation of deformation behavior of low carbon steel. The behavior law is established starting from the experimental torsion moment. The composed constitutive ...
    • On the Corrosion Behavior of Organic Nanocomposite Coatings 

      Gheorghieș, Constantin; Gheorghieș, Livia; Oancea, Constantin; Hagioglu, Petrica (Universitatea "Dunarea de Jos" din Galați, 2009)
      Recently, researches on composite coatings of organic nature with the addition of metallic oxide nanopowders have shown an increasing corrosion resistance of metallic materials. Carbon steel shows an improved behavior ...
    • 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 Kinetics of Sol Gel Al:ZnO thin Films Crystallization on Silicon Substrate 

      Mușat, Viorica; Canejo, Joan; Iticescu, Cătălina (Universitatea "Dunărea de Jos" din Galați, 2006)
      Recently, there is a growing interest in applying ZnO thin films on silicon buffer substrates for p-n junction devices, optical wave guide, etc. A sol gel process is very attractive technique for obtaining oxide thin ...
    • 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, ...
    • 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 ...
    • Optimization of Thermal Processing Parameters of a High Strength Aluminum Alloy 

      Neacșu, Marian-Iulian; Hanganu, Doru (Universitatea "Dunărea de Jos" din Galați, 2015)
      The work shows a calculation meant to optimize the thermal processing parameters (time and temperature) of a high strength aluminum alloy. The optimization calculation has been done by gradient method which involves ...
    • Optimization of Thermomechanical Processing of Some Aluminum Alloys by Dimensional Interpolation Method Using the Matlab 

      Neacșu, Marian; Hanganu, Doru; Vasilescu, Elisabeta (Universitatea "Dunărea de Jos" din Galați, 2013)
      This paper presents results of research on optimization of thermomechanical treatment applied to an alloy of the Al-Zn-Mg-Cu system, used in the aviation industry.Optimizing thermomechanical treatment process is based ...
    • Optimization Techniques for the Neutralization of the Polluted Waters from Metal Plating 

      Dragomir, Ștefan; Bordei, Marian (Universitatea "Dunărea de Jos" din Galați, 2016)
      The problems related to the protection of the environment are regarded especially as a result of the local pollution by the industry and agriculture or by the overcrowded areas, which have led to the disturbance of some ...
    • Oxidizing Influence Over Surface Structures and Properties for A3k Steel Nitrocarburized in Fluidized Bed 

      Cazacu, Nelu; Dobrovici, Sorin; Bâclea, Adolf; Tănăsescu, Victor; Preda, Nelu (Universitatea 'Dunărea de Jos" din Galați, 2006)
      Surface duplex thermochemical treatment (oxinitrocarburizing) has principal scope to obtaining superficial mechanical higher properties with increasing corrosion capacity. The paper is based by oxinitrocarburizing ...