2008 fascicula9 nr2

Electrodeposition Obtaining and Corrosion Behaviour of Phenol Formaldehyde Resin/Zinc Composite Coatings

Mitoșeriu, Olga; Ciubotariu, Alina; Benea, Lidia; Ponthiaux, Pierre; Wenger, Francois (Universitatea "Dunărea de Jos" din Galați, 2008)

The present work has the purpose of obtaining composite coatings in zinc matrix by using phenol - formaldehyde resin type NOVOLAC (RESITAL 6358/1) in the electrodeposition process of zinc. The PF resin/Zn composite ...

Laser Surface Alloying of Some Steels from SiC Predeposited Powders

Levcovici, S.M.; Levcovici, D.T. (Universitatea "Dunărea de Jos" din Galați, 2008)

For the purpose of studying the possibilities of increasing the wear resistance, specimens of three steels with 0.2%C, 0.46%C and 1%C were surface alloyed with reinforcement from overlapping pastes with green SiC hard ...

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, ...

Research for Realize the Configuration of Wind Energy Turbine

Drăgan, Viorel; Drăgan, Mădălina Cristina; Baltă, Ștefan (Universitatea "Dunărea de Jos" din Galați, 2008)

For already quite some time, the word energy has received a somewhat negative connotation. Some circles want to make us believe that energy is something that one should have disgust for; a necessary evil that should be ...

Surface Hardening Over 38MoCrA109 Steel by Yag:Nd Pulse Laser

Dobrovici, Sorin; Cazacu, Nelu; Sava, Liliana; Baclea, Adolf (Universitatea "Dunărea de Jos" din Galați, 2008)

Laser offers unique capabilities for high energy concentrations at small surfaces. Factors that have influences over interactions between laser beam and steel surfaces have very high control. Pulse laser YAG:Nd is usually ...

Nanostructured Surface for 38MoCrA109 Steel by Nitriding in Nitrogen Atmosphere and Yag;Nd Pulse Laser Activation

Cazacu, Nelu; Pintilie, Cătălin; Dobrovici, Sorin; Bâclea, Adolf (Universitatea "Dunărea de Jos" din Galați, 2008)

YAG:Nd pulse laser is usually used for cutting and welding. The paper is based by experiments using YAG:Nd pulse laser (KVANT 17-CIS made). Technological modules were assembled for laser beam deviation and for relative ...

Mechano-Erosion: A Novel Test Methodology to Accelerate Erosion in Rolling Contact Fatigue Experiments

Karunamurthy, Balamurugan; Hadfield, Mark (Universitatea "Dunărea de Jos" din Galați, 2008)

Rolling contact fatigue testing of rolling elements with low saturation temperature lubricants result, in several difficulties. Mainly, uncontrolled phase changes due to flow dynamics often cause difficulties in assessing ...

Glow Discharge Optical Emission Spectrometry (GDOES), an Effectiveness Method for Characterizing Composition of Surfaces and Coatings

Munteanu, Daniel; Schreiner, Alexander (Universitatea "Dunărea de Jos" din Galați, 2008)

Within the frame of this work, the technical procedures and real advantages of using Glow Discharge Optical Emission Spectroscopy (GDOES) for establishing depth concentration profiles of surfaces are presented. GDOES can ...

Modelling by Finite Element Analysis Method of Stress State Establishing for an Alloy Steel

Măcuță, Silviu; Bordei, Marian (Universitatea "Dunărea de Jos" din Galați, 2008)

The paper presents some results about the tension state in samples subject to pure bending fatigue process. Numerical simulation based on finite element method was used. The tension field induced by a vertical deformation ...

Half-Finished Technology of Steels and Fatigue Strength

Palaghian, L.; Ciortan, S.; Baicean, S. (Universitatea "Dunărea de Jos" din Galați, 2008)

The paper presents the bending fatigue testing for four steel brands. The test showed that the fatigue strength is decreasing with the increasing of both ingot size and the rolled sheet thickness. The fatigue strength ...

Structure Effects Over Behavior of Graphite Gray Iron in Running

Preda, Adriana; Rîpă, Minodora; Miculescu, Florin; Dulea, Gabriela (Universitatea "Dunărea de Jos" din Galați, 2008)

The work aims at emphasizing the structure changes of graphite gray iron, as a result of make-casting conditions and their effects over behavior in running of several cast items. Researches consisted of complex ...

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 ...

Vaporisation of the Metallic Bath Component During Refining in Oxygen Converter

Ivănescu, Lilica; Ivănescu, Alexandru; Vasilescu, Elisabeta (Universitatea "Dunărea de Jos" din Galați, 2008)

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 ...

Pollutant Emissions, Control and Prevention in the Secondary Copper Industry

Ciocan, Anişoara; Baltă, Ştefan (Universitatea "Dunărea de Jos" din Galaţi, 2008)

This paper presents an analysis of pollutant emissions specifics to copper waste valorization. There are made appreciations of the role and importance which have the characteristics of mixed charge with waste having a ...

Behaviour of Some Important Components in a cold Rolling Mill

Dragomir, Ştefan; Dragomir, Georgeta; Bordei, Marian (Universitatea "Dunărea de Jos" din Galaţi, 2008)

For a good behaviour of mill parts and accurate functioning it is necessary to have an integrated system for all mill tandem. It is important to know the speed controls and strip tension in correlation with torque, ...

X-Ray Diffraction Study of the Rewverse Martensitic Transformation in Cu-Al-Ni Shape Memory Alloy

Gurău, Carmela; Gurău, Gheorghe; Fernandes, F. M. Braz (Universitatea "Dunărea de Jos" din Galaţi, 2008)

The paper presents an X ray diffraction study for a cooper based shape memory alloy. The behavior of CuAl13Ni4 alloy, which exhibits a peculiar property, is evaluated by structural changes. On cooling, the martensitic ...

Steel and Refractory Chemical Interactions and Mechanical Behavior of Plates for Sliding Gate During Steel Continuous Casting

Munteanu, Viorel (Universitatea "Dunărea de Jos" din Galaţi, 2008)

The main objective to increase CC productivity as well as steel quality by using optimized refractory from ladle-tundish-to-mold lead to techniques that allow the prediction of steel and refractory chemical interactions ...