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Establishing of Rolling-Friction Coeffocient, for Hertzian Contacts Between Steel Balls and Different Kinds of Thermochemical Treated Steel Surfaces
(Universitatea "Dunărea de Jos"din Galați, 2005)
It is known that for the ball displacement guide paths, the necessary startmoving
force of the mobile half-couple is higher than the displacement-motion keeps
force.Within the frame of this work, it has been designed and ...
Kinetic of Nitroso R-Salt Sorption on Amberlite IRA 402 Resin
(Universitatea "Dunărea de Jos" din Galați, 2005)
The sorption of nitroso R salt from aqueous solution by ion exchange resins,
such as AMBERLITE IRA 402 (Cl- form) , is described. The experimental data have
been analyzed by using the sorption kinetics for a first-order ...
Reasearches Regarding Structural Changes Due to Nickel Microlalloying of Hot Galvanizing Baths
(Universitatea "Dunărea de Jos" din Galați, 2005)
This work offers a synthesis of researches performed in laboratory and regards
the nickel microalloying of hot galvanizing baths. Experiments followed the
structural changes of both hot galvanizing bath and deposed layer ...
The Value of the Structural Remanence and Thermic Tensions in the Forged Pieces
(Universitatea "Dunărea de Jos" din Galați, 2005)
The plastic deformation, the heating and the cooling of the pieces submitted to plastic
deformations acumulate remanent tensions inside the pieces.
Knowing the environmental where they are produced and avoiding its ...
Behavior of Rp3-High Spped on Short Time Nitriding in Fluidized Bed
(Universitatea "Dunărea de Jos" din Galați, 2005)
For steel nitriding, treatment time is a important factor. Gas and plasma
nitriding are usual method to increase surface properties by nitriding. A close
retort is used. Total time for treatment are higher because are ...
The Actionnary System of the Continnous Discharge Furnace from L.T.G.-1. Mittal Steel
(Universitatea "Dunărea de Jos" din Galați, 2005)
In this study the authors made a systematically research about the actionnary
system at the continuous discharge heating furnace. It take in account the possibility
to use a new material, with most good wear resistance, ...
Modelling of the Flow and Deformation Fields at teh Profiles Rolling by Field Lines Method
(Universitatea "Dunărea de Jos" din Galați, 2005)
This paper presents a method for modeling of the rolling process based at the
deformable continuous medium mechanics, the theory of field lines. The rolling of
the profiles and plates may be evaluated as the plane strain ...
The Computation of the Calended Rolls Deflection Using the Stone-Gaevski Formulae
(Universitatea "Dunărea de Jos" din Galați, 2005)
This paper presents new models for the change of the internal configuration of
the paper calender rolls with extension to those for plastics and rubber, and the
deflection calculation procedure using Stone-Gaevski formulae.
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 ...
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 ...