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pro vyhledávání: '"Petre Stelian Nita"'
Autor:
Petre Stelian NITA
Publikováno v:
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Vol 36, Iss 3 (2013)
In the design of computational algorithms for refining slags for ladle treatment of steels, the evaluation of contributions of different factors is a definitory step, allowing to evaluate the real posibilities and limitations in steel refining practi
Externí odkaz:
https://doaj.org/article/1ca505c25576496eb08d52d0c014b295
Autor:
Petre Stelian NITA
Publikováno v:
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Vol 35, Iss 2 (2012)
Properties of refing slags belonging to the system CaO-MgO-Al2O3-SiO2 are important in simultaneous or succesive refinig treatment processes in the ladle and other refing metalurgical reactors. The efficiency of treatments depends upon the values of
Externí odkaz:
https://doaj.org/article/25b6762012294036a88d2721bffc23ff
Autor:
Petre Stelian NITA
Publikováno v:
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Vol 34, Iss 4 (2011)
Processes and prime materials involved in Fe-Cr-Al alloys production by aluminothermy are presented having in view new possibilities to produce them more ecological and more efficient, using energy of microwave field. The capacity of heating pieces
Externí odkaz:
https://doaj.org/article/9bc81f07da084e7c9b5a23f462634120
Autor:
Petre Stelian NITA
Publikováno v:
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Vol 33, Iss 4 (2010)
In evaluation of the local hydrodynamics of interface, in steel-slag refining processes influenced by solutal effects, adequate scales of length and time satisfying certain conditions are necessary to get a correct and suggestive image of the weight
Externí odkaz:
https://doaj.org/article/24ad15b82bc0435aa9f630f6ca33047b
Autor:
Petre Stelian NITA
Publikováno v:
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Vol 33, Iss 3 (2010)
Based on the “one layer model” applied to desulphurization slag layer with boundary conditions, imposed due to the sulphur transfer through the interface steel-slag during desulphurization process, the threshold conditions of instability for Mara
Externí odkaz:
https://doaj.org/article/2f43c5ebde3843f19373b602b9628e07
Autor:
Petre Stelian NITA
Publikováno v:
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Vol 32, Iss 2 (2009)
The paper is dealing with the expression of times scales associated to different physically and physico-chemically driven processes taking place on the slag side of the interface CaO-Al2O3 slags-steel, specific to the steel refining process. The driv
Externí odkaz:
https://doaj.org/article/9b437bfa2de54d5992ae65fc6cb08796
Autor:
Petre Stelian NITA
Publikováno v:
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Vol 30, Iss 1 (2007)
Low carbon, aluminum killed steels are well represented by the adequate part of the Fe-C-O system, where are available useful experimental data, regarding the surface tension and viscosity. The reference dynamic characteristic scale, of about 1-2 μm
Externí odkaz:
https://doaj.org/article/f727c78b4db742b6a917e24b2c21c1dc
Autor:
Petre Stelian NITA
Publikováno v:
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Vol 29, Iss 2 (2006)
Starting from the impressive progress in studying the instabilities induced by capillary effects in systems of two immiscible fluids in chemistry, an analysis of factors in solutal Marangoni effect and Marangoni number is performed, regarding the liq
Externí odkaz:
https://doaj.org/article/6333212ca523484b9ad4f66a84053654
Publikováno v:
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, Vol 28, Iss 1 (2005)
Coloured liquids are used to show the stream lines in aqueous systems used as model liquids, in different chemical reactors, also in metallurgical reactors dedicated to liquid steel processing; ladles represent a class where these principles could be
Externí odkaz:
https://doaj.org/article/6171230e2c97401b83802e2b3b6f09b2
Autor:
Petre Stelian Nita
Publikováno v:
Materials Science and Engineering: A. 495:320-325
In the paper are presented and analyzed some specific problems of instability and of Marangoni convection in desulphurizing slags at 1873.15 K, due to the presence of sulphur, during liquid steel treatments. Starting from the quantity sulphide capaci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::180a9c856b46590982166a06b9e80812
https://doi.org/10.1016/j.msea.2007.12.048
https://doi.org/10.1016/j.msea.2007.12.048