Căutare după Autor "Doniga, Ana"
Afișează articolele 1-8 of 8
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Intercritical Thermomechanical Treatments of the Microalloyed Steel Products for Welded Structures
Vasilescu, Elisabeta; Doniga, Ana; Neacșu, Marian (Universitatea "Dunărea de Jos" din Galați, 2009)This paper shows the laboratory experiments made on several grade steels by applying some intercritical thermomechanical treatments; Two variants were used: “down-up” thermomechanical treatment with heating and rolling ... -
Magnetical Properties of Silicon Steels Used for Electrotechnical Industries
Doniga, Ana; Vasilescu, Elisabeta; Istrate, Miltiade (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 ... -
Reseaeches Regarding the Elements Loss Through vaporization During the Elaboration Process LD Converter
Ivănescu, Alexandru; Doniga, Ana; Vasilescu, Elisabeta; Ivănescu, Lilica (Universitatea "Dunărea de Jos" din Galați, 2009)The paper presents a series of researches regarding the vaporization of the component elements of the metallic bath and slag during refining in LD converter. Also, the main factors which influence the vaporization process ... -
Researches Regarding Improvement of the Fatigue Limit by Heat Treatments of the Al-Alloys for Aeronautics Industry
Doniga, Ana; Vasilescu, Elisabeta; Istrate, Miltiade; Vasilescu, Ioan; Măcuță, Silviu (Universitatea "Dunărea de Jos" din Galați, 2005)The laboratory experiments were made on the two aluminium alloyed qualities used for aeronautical industry. The structure and mechanical characteristics were analyzed and the gotten results were compared using those two ... -
Study of the Inclusions from the Oriented Grains Silicon Steels and Their Influence on the Texture
Doniga, Ana; Vasilescu, Elisabeta (Universitatea "Dunărea de Jos" din Galați, 2006)The paper presents experimental results concerning the inhibitor phases generation by microalloying elements utilization. It was made experiments on three silicon steel charges. It was observed that the inhibitor phases ... -
Study on the Influence of the Chemical Composition in the Thermomechanical Processing of the Steel
Vasilescu, Elisabeta; Vasilescu, Ioan; Doniga, Ana; Neacșu, Marian (Univesitatea "Dunărea de Jos" din Galați, 2009)This paper presents the results of industrial scale researches on the influence of the chemical composition on the characteristics of high yield point plates of wieldable fine grain steels. The comparative study of the ... -
The Dental Technology in Art Foundry
Florea, Gheorghe; Doniga, Ana; Florea, Bogdan (Universitatea "Dunărea de Jos" din Galaţi, 2012)The paper presents results of a study undertaken to implement the dental casting technique of small parts characterized by extremely complex drawings of surfaces and thicknesses reduced specific objects. During the study ... -
Thermomechanical Processing of Microalloyed Steels Used for Naval and Oil Industries
Doniga, Ana; Vasilescu, Elisabeta; Istrate, Miltiade; Măcuță, Silviu (Universitatea "Dunărea de Jos" din Galați, 2005)This paperwork shows the laboratory experiments made on X60 and X65 steels with several intercritical thermomechanical treatment application. Two variants were used: “down-up” thermomechanical treatment with heating and ...