Căutare Fascicula IX după Titlu

Afișează articolele 490-509 of 552

    • The Influence of Steam Treatment on Mechanical Properties and Abrasive Wear Behavior of Sintered P/M Steels 

      Marin, Mihaela; Potecaşu, Florentina; Drugescu, Elena; Potecaşu, Octavian; Alexandru, Petrică (Universitatea "Dunărea de Jos" din Galaţi, 2012)
      In this paper is a study of the influence of steam treatment on sintered P/M steels, for three different types of powder. The abrasive wear of steam-treated sintered iron is analysed by abrasion tests. The specimens were ...

    • The Influence of the Carbon Content on the Depth of the Carbonitrurat Layer in Fluidized Layer for 1C15, 1C25 and 1C45 Steels 

      Neacșu, Marian-Iulian; Dobrovovici, Sorin; Diaconu, Nicolae (Universitatea "Dunărea de Jos' din Galați, 2016)
      This paper presents the experimental research of carbonitriding thermochemical processing in fluidized layer performed on some samples of carbon steel with different carbon contents, the fluidized layer being made up of ...

    • The influence of the physical-Chemical Factors on the Distribution of Heavy Metals in the Delta Ecosystems 

      Constantinescu, Stela (Universitatea "Dunărea de Jos" din Galați, 2015)
      Recognized to the influence of micropollutants, heavy metals represented on the ecological status of surface waters, including delta ecosystems, the paper aims to study the impact of environmental factors (temperature, ...

    • The Influence of the Steel's Surface Quality on the Electroless Ni-P Coatings 

      Potecasu, Florentina; Radu, Tamara (Universitatea "Dunărea de Jos" din Galaţi, 2015)
      The method of autocatalytic reduction coating assures a precise reproduction of the coated surface. This is an advantage when the support surface has a complex geometry but also becomes a disadvantage because it requires ...

    • The Influence of the Thermomagnetic Treatments on the Hardness Number of Steels and the Superficial Layers Nitrided Durability 

      Papadatu, Carmen Penelopi (Univeritatea "Dunărea de Jos" din Galați, 2005)
      Two types of steels subjected to a nitriding thermo-chemical treatment after thermomagnetic treatments. The structural aspects into superficial layer of these steels are studied during friction process by using of an ...

    • The Influence of Waste Composition on the Pumping System Corrosion 

      Perju, Manuela-Cristina; Savin, Cristina; Bejinariu, Costică; Nejneru, Carmen; Achiței, Dragoș-Cristian (Universitatea "Dunărea de Jos" din Galați, 2017)
      Wastewater piping systems in urban agglomerations or industrial areas have problems with the wear and tear of equipment and water transport pipelines used. The problems are related to hydromechanics wear and corrosion ...

    • The Laboratory Experiments Regarding the Intercritical Heat Treatments Applied an the Low-Alloyed Steel 

      Vasilescu, Elisabeta; Neacșu, Marian (Universitatea "Dunărea de Jos' din Galați, 2006)
      The paper presents the research results regarding the influence of the intercritical thermal treatments carried out on some hypoeutectoid steel castings. The purpose of this research at the laboratory scale is to ...

    • The Level of Noise Pollution in University Campuses Administered by the University of 1 December 1918 in Alba Iulia 

      Marica, Elena (Universitatea "Dunărea de Jos" din Galați, 2018)
      Sound pollution is becoming a major problem because of multiplying sources of noise. In this study, I will present the results of the noise measurements carried out in the four campuses of the 1 Decembrie 1918 University ...

    • 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 ...