Căutare 1993 -2018 după Data publicării
Afișează articolele 361-380 of 552
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Thermomechanical Process Simulation to Predict Processing of Mechanical Properties of Alloys Al-Zn-Mg-Cu
(Universitatea "Dunărea de Jos" din Galați, 2013)This paper presents how to perform simulation (prediction) mechanical properties of aluminum alloys of the system Al-Zn-Mg-Cu. Graphical interface that can predict the mechanical properties studied was performed using ... -
Reasearches Regargindg the Influence of Steam Oxidation on Sintered Alloys Properties
(Universitatea "Dunărea de Jos" din Galaţi, 2013)In this paper is studied the influence of steam treatment applied on sintered steels and the mechanical properties and abrasive wear behavior for two different types of powder. Steam treatment was carried out at temperature ... -
Characterization of Sintered Hardmetals Coated with Tic
(Universitatea "Dunărea de Jos" din Galaţi, 2013)This paper presents the realization of TiC thin films by CVD method. The thin layers of TiC thicknesses were 8 and 10μm, their thickness increasing with time, keeping the temperature. Diffractometer analysis certifies ... -
Evaluation of the Occupational Risk Associated to Work Environment in Ferrous Metallurgy
(Universitatea "Dunărea de Jos" din Galați, 2013)Work environment present risk factors due to chemical pollution of ambient air with dust, smoke, fumes, vapors, mists and gases. Moreover physical risk factors (related to noise, lighting, temperature, vibration, humidity, ... -
Research Regarding on Work Safety in Making Steel at LD Converted
(Universitatea "Dunărea de Jos" din Galați, 2013)This paper presents the tasks and work environment of workers working at the LD converter. Risk factors identified and assessed and suitable measures for reducing or eliminating them, resulting a safer environment for ... -
Effect of Oxidation on Spectrophotometric and Rheological Parameters of Corn Oil
(Universitatea "Dunărea de Jos" din Galați, 2013)The aim of this study is the viscosity’s evolution depending on the temperature and the shear rate and the analysis of the transmittance spectra of the oxidized corn oil. Corn oil was oxidized of the temperatures of ... -
Research Concerning the Influence of Laser Cladding on the Operating Charactersitics of the Surface Layers Obtained from High-Speed Steel Powder
(Universitatea "Dunărea de Jos" din Galați, 2013)The paper presents the corrosion behavior of laser cladding layers in 0.5 M NaCl along with a durability test, compared with samples made of clasically hardened HS6-5-2 steel. The higher characteristics of the laser ... -
Electrodeposition and Characterization of Ni-Si Nanocomposite Coatings
(2013)In this paper is presented morphological aspects and corrosion behaviour of composite coatings having nickel as metal matrix and silicon as dispersed phase obtained during electrodeposition process of nickel. Silicon ... -
Optimization of Thermomechanical Processing of Some Aluminum Alloys by Dimensional Interpolation Method Using the Matlab
(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 ... -
Radial Forging Machine. Technology for Axle Type Parts
(Universitatea "Dunărea de Jos" din Galați, 2013)This paper presents three types of radial forging machines to produce the axle type pieces. The new types of radial forging machines are presented cinematically. The movement of the deformation tools at these types of ... -
Recycling of Integrated Steel Plant Solid Wastes in the Sintering Process and Corresponding Effects on Pollutant Emissions
(Universitatea "Dunărea de Jos" din Galați, 2013)The new practices in sintering technology allows for the use of a wide range of iron-containing materials in charge with obtaining the agglomerate with necessary characteristics for optimal operation of the blast furnace. ... -
A Two-Step inverse Analysis Approach Used to Identify the Mechanical Properties of Metallic Materials Subjected to Large Plastic Strains. Applications to Local Investigations of Surface Layer's Behaviour
(Universitatea "Dunărea de Jos" din Galați, 2013)The aim of this research work is to improve the experimental and numerical analysis of the local mechanical properties corresponding to metallic alloys used by bulk forming processes. A non-conventional upsetting test ... -
Studies on the Effects of Olive Oil Oxidation
(Universitatea "Dunarea de Jos" din Galați, 2013)The aim of this study is the viscosity’s evolution depending on the temperature and the shear rate and the analysis of the transmittance spectra of the oxidized olive oil. Oxidation of olive oil is a process that leads ... -
Photocatalytical Activities of Manganese Doped Zinc Oxide Nanoparticles prepared by Sol-gel Method
(Universitatea "Dunărea de Jos" din Galați, 2013)In the last period, ZnO and doped ZnO nanoparticles are intensively investigated for their photocatalytic properties. This paper reports on ZnO and Mndoped ZnO nanoparticles obtained by modified sol-gel method. Were ... -
Tribocorrosion-insight Into Material Degradation in Specific Environments
(Universitatea "Dunărea de Jos" din Galați, 2014)Tribocorrosion is an irreversible surface degradation mechanism of a metallic and/or non-metallic material as a result of its physicochemical and mechanical interactions during relative motion (friction, sliding, impact, ... -
Characterization on the Red Mud Resulted from the Alumina Bayer Process Production for the Future Use in Geopolymers Synthesis
(Universitatea "Dunărea de Jos" din Galați, 2014)This paper presents the results of analyses on the chemical, structural and morphological processing of bauxite red mud resulting from alkaline wet Bayer technology. The characterization of the material considered as ... -
Elastic Modulus of Coatings by Pendulum Impact Test
(Universitatea "Dunărea de Jos" din Galați, 2014)The pendulum impact scratch device with high precision system in measuring normal and tangential forces during scratching has been used to study elastic modulus of coatings. The criterion for evaluation of elastic modulus ... -
Particularities of the Management System for Phone Mobile Waste in Romania
(Universitatea "dunărea de Jos" din Galați, 2014)The main objective of this paper is to characterize the management system for mobile phones in Romania. The dimension of cell phone waste flow and the problems related to the collecting and recycling of this waste were ... -
Emphasizing the Toxicity of Heavy Metal ions on Plants: Monitoring with an Amino Acids Assay
(Universitatea "Dunărea de Jos" din Galați, 2014)In order to emphasize modifications on living organisms resulted from interaction with heavy metals, we applied a simple, sensitive, quick, inexpensive and reproducible method. It evaluates modifications through determining ... -
Experimental Research on Heating Behavior of Some Steels During Hot Metallurgical 1453 – 083X
(Universitatea "Dunărea de Jos" din Galați, 2014)The heating of steel semi-products in view of hot rolling process or heat treatments is achieved at the large scale in propulsion ovens for the increase of their deformability and to improving mechanical characteristics ...