Căutare 1993 -2018 după Titlu
Afișează articolele 234-253 of 552
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Laser Cladding of High-Speed Steel on a Steel Support
(Universitatea "Dunărea de Jos" din Galați, 2005)Multilayer cladding by injection of high-speed steel powder with 0.82%C, 4.7%Mo, 6.4%W, 4.1%Cr, 2.02%V, 0.3%Mn, as chemical composition, in melted bath by CO2 continuous wave laser connected to x-y-z coordinate table was ... -
Laser Cladding of Ni-Cr-B-Fe_Al Alloy on a Steel Support
(Universitatea "Dunărea de Jos" din Galați, 2005)Multilayer coating by injection of powder with 8.9% Cr, 4.5% Fe, 5.1% B, 2.4% Al, 0.6% Cu; all reminded of Ni, as chemical composition, in melted bath by CO2 continuous wave laser connected to x-y-z coordinate table was ... -
Laser Deposition of Bronze Aluminum on Steel Support
(Universitatea "Dunărea de Jos" din Galați, 2015)In order to rise the wear and corrosion resistance of 0.45% C superficial steel layers, a multilayer coating was tested by injection of powder with 88.3% Cu; 9.5% Al; 2.2% Fe in melted bath by CO2 continuous wave laser. ... -
Laser Surface Alloying of Some Steels from SiC Predeposited Powders
(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 ... -
Laser Surface Hardening of 51Crv4 Steel
(Universitatea "Dunărea de Jos" din Galați, 2005)The work presents the surface changes in microstructure and properties by quenching the 51CrV4 steel from liquid and solid phase, using a CO2 continue laser wave with 900W power. In order to determine the hardening ... -
Lean - a Philosophy Highlighting the Value Added Through Self Improvement and Waste Reduction, Concepts Presented from the Experience of the Romanian Automotive Industry
(Universitatea "Dunărea de Jos" din Galați, 2017)The definition of Lean n is: eliminating all sources of error, time and effort that are not necessary starting with the raw materials and up to the final product, from order to delivery and from design to launch. TRW is ... -
Lean Manufacturing - Process Automation and Elimination of Production Losses in Romanian Automotive Industry
(Universitatea "Dunărea de Jos" din Galați, 2017)Lean Manufacturing is currently the most important management method for manufacturing companies. The method, used in conjunction with the quality tool called “six sigma”, is based on Toyota Production System and has ... -
Lean Manufacturing - Streamlining Processes and Eliminating Waste Applied to the Romanian Automative Industry
(Univeristatea "Dunărea de Jos" din Galați, 2017)Lean Manufacturing is currently the most important management method for the production companies. The method is used in conjunction with the quality instrument referred to as “6 sigma”, derived from the Toyota production ... -
Low Potential Heat Recovery Using Heat Pumps
(Universitatea "Dunărea de Jos" din Galați, 2012)This paper presents a study on the possibility of recovering low thermal potential heat from the cooling technological water of industrial processes. The analysed solution consists in the use of a heat pump which would ... -
Magnetical Properties of Silicon Steels Used for Electrotechnical Industries
(Univeristatea "Dunărea de Jos" din Galaţi, 2008)This paper-work shows the laboratory experiments achieved on more silicon steel plates, where the magnetic ranges were spot- lighted by particular technical requirements. On the same plates the texture analyses were made ... -
Making Cast Piece Using Exothermic Head
(Universitatea "Dunărea de Jos' din Galați, 2009)In this paper presents a study about cost of part obtained with exothermal heads by replacement of classic heads. This method contributes to conduct solidification of cost pieces, because exothermal heads are forecast ... -
Management of the Environmental Risks Identified in an Organization
(Universitatea "Dunărea de Jos" din Galați, 2017)Response to risk is a process that is directly involved in risk management and is governed by the organization's security strategy, environmental characteristics and security mechanisms. The management identifies the ... -
Manufacture of Stud Link Chain Cable Made of Grade U1 and U2 Steel
(Universitatea "Dunărea de Jos" din Galați, 2007)We have analyzed the fabrication technology of the link chain cable made of grade U1 and U2 steel from TREFO S.A. Galati and we had in view during the experiments several rolling programs. The main characteristics of a ... -
Mass Erosion and Material Transfer at the Deposition of Layers by Inverse Electroerosion
(Universitatea "Dunărea de Jos" din Galaţi, 2008)The deposition and alloying of the superficial layers by inverse electroerosion or by electric spark given by a vibrating electrode permits to obtain a large scale of properties at the surface of metallic materials from ... -
Materials Used for Manufacturing Some Objects from 1600 Before Christ - 500 After Christ Period
(Universitatea "Dunărea de Jos" din Galați, 2010)The appearance and the spreading of metallic objects produced a profound social change. The early metallurgy included two ages: The Bronze Age and The Iron Age. The late Bronze Age is considered to be the most important ... -
Mathematical Model Cooling Agglomeration Ferrius in Layer
(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 ... -
Mathematical Model of the Strip Rolling Made of the Sinterized Metallic Powders
(Universitatea "Dunărea de Jos" din Galați, 2005)The minimum-power method has been used to investigate the final ratio soft-layer thickness to tough-layer thickness in bimetals with porous layer rolling. The velocity fields has been determined and the total deformation ... -
Mathematical Modeling of the Heat Treatment Process Applied to Alloy Al-Zn-Mg-Cu-4.5% Zn, Used in Aeronautics
(Universitatea "Dunărea de Jos" din Galați, 2012)This paper presents mathematical modeling based on the regression analysis method by active experiment of a thermal treatment process applied to an alloy belonging to Al-Zn system, which finds application in aeronautics. Using ... -
Mathematical Modelling of Steel Continuous Casting Hydrodynamics (1)
(Universitatea "Dunărea de Jos" din Galați, 2006)The quality increase of steel continuous casting and a reliability indices of afferent installations imposes the automation systems adoption of machines of continuous casting of steel. In this paper enters original ... -
Measurement and Analysis of Vibrations on a Cold Rolling Mill for Steel Strip
(Universitatea "Dunărea de Jos" din Galați, 2012)In this paper the authors made measurements and registration of vibration by using accelerometers posted on the top backup rolls. This is a new way for predict the damage in the rolling mill equipment and the precision ...
