Buscar
Mostrando ítems 1-10 de 27
Researches on the Pollution of Underground Waters in a Certain Part of Galati District
(Universitatea "Dunărea de Jos" din Galați, 2007)
The paper underlines the importance of monitoring the quality of the
underground waters and presents the experimental results as regards the pollution
of underground waters in a certain part of Galati district. The final ...
Grain Refinement in Aluminum Alloys by Acoustic Cavitation Phenomena
(Universitatea "Dunărea de Jos" din Galați, 2007)
In this article, ultrasonic method of transmitting forced vibrations to solidifying
aluminum-alloy melts is presented. In the presence of well developed cavitation
situations, a fine and homogeneous microstructure has ...
Behaviour at Nitriding in Fluidized Layer of Austenitic Stainless Steels at the Temperature of 450°C
(Universitatea "Dunărea de Jos" din Galați, 2007)
Stainless austenitic steels have a good corrosion resistance but reduced
abrasion strength due to low strength below 200HV5. By nitriding one may ensure
the obtaining of a superficial layer with increased strength that ...
Study of the Thermomechanical Treatment Post-Deformation Maintaining Time Influence on the Mechanical Characteristics of the Microalloyed Steels
(Universitatea "Dunărea de Jos" din Galați, 2007)
This paper-work shows the results of the laboratory researches of the postdeformation
maintaining time influence on the physical-mechanical characteristics
of the flat microalloyed steels, at high temperature thermomechanical ...
Steel Flow Control of Continuous Casted Slabs Using Submerged Entry Nozzle Exchange System for Tundish
(Universitatea "Dunărea de Jos" din Galați, 2007)
In the steel making process, the continuous casting of molten steel is a very
important step which involves hi-tech facilities. The flow control is a very important
issue that influences the quality of the final products. ...
Experimental Researches on the Constitutive Equation of Concrete Steel with Superior Characteristics
(Universitatea "Dunărea de Jos" din Galați, 2007)
The plastic deformation behavior is defined by the function of the deformation
strength according to the strain, strain rate and temperature as the factor of the
deformation process. The behavior law establishes by the ...
Contribution of Heat and Thermochemical Treatments to the Improvement of the Perfomances of High-Speed Steel Tools
(Universitatea "Dunărea de Jos" din Galați, 2007)
The In this paper the influence of non-conventional heat and thermo chemical
treatments upon the structure of tool steels and implicitly, upon the performances
that are derived from applying such treatments, is presented. ...
Implications of Thermal and Thermo Chemical Treatments in Electrolytic Plasma on the Phasic Composition of Steels 40Cr10 and OLC 55
(Universitatea "Dunărea de Jos" din Galați, 2007)
The X-ray diffraction researches allowed the identification of the phases
present in the structure of steels 40Cr10 and OLC 55, treated thermally and
thermal-chemically in electrolytic plasma and the calculation of ...
The Analysis of the Breaking Susceptibility of Some Feritic Stainless Steel
(Universitatea "Dunărea de Jos" din Galați, 2007)
The growth of the world stainless steel conumption was the result of some new
domains development, of some demands and special conditions undercooling not
only the adaptability of this alloy but also the remarcable range ...
Experimental and Theoretical Investigations on Mode I Crack Propagation in Notches Under Cyclic Loading
(Universitatea "Dunărea de Jos" din Galați, 2007)
Research works regarding crack opening stresses covering various types of
Mode I cracks initiated and growing in notches under cyclic loading are shown. A
large number of parameters influence the crack opening behavior, ...