http://arthra.ugal.ro/handle/20.500.14043/25649 2026-04-16T12:42:03Z 2026-04-16T12:42:03Z Munteanu, Viorel Vlad, Maria Balint, Lucica http://arthra.ugal.ro/handle/20.500.14043/25681 2020-09-03T13:24:38Z 2009-01-01T00:00:00Z

Experimental Model for Pollutants Monitoring Into the Coke-Chemical Plant Munteanu, Viorel; Vlad, Maria; Balint, Lucica The Coke-Chemical plants contribute heavily to producing and emitting in the atmosphere a big amount of polluting agents. Polluting emissions diminution and situating them within the international specific standards, can be realized by introducing a monitoring model with automate prominence of atmospheric noxa concentrations and with the possibility of connecting it to an open communication system. In the paper is conceived an experimental model for noxa and pollutants monitoring and in a frame of a polluting field existing in the coke-chemical sector from an integrated iron and steel complex. THE ANNALS OF “DUNAREA DE JOS” UNIVERSITY OF GALATI. FASCICLE IX. METALLURGY AND MATERIALS SCIENCE N0. 2 – 2009, ISSN 1453 – 083X

2009-01-01T00:00:00Z Ivănescu, Lilica http://arthra.ugal.ro/handle/20.500.14043/25680 2020-09-03T13:24:38Z 2009-01-01T00:00:00Z

The Steam-Secondary Source of Energy in Metallurgy Ivănescu, Lilica The paper is focused on a study of how to use the steam from recovery boilers of LD converters to produce electricity in turbine generators and heat in a heat network. THE ANNALS OF “DUNAREA DE JOS” UNIVERSITY OF GALATI. FASCICLE IX. METALLURGY AND MATERIALS SCIENCE N0. 2 – 2009, ISSN 1453 – 083X

2009-01-01T00:00:00Z Niță, Petre Stelian http://arthra.ugal.ro/handle/20.500.14043/25679 2020-09-03T13:24:38Z 2009-01-01T00:00:00Z

Time Scales of Phisico-Chemicaly Driven Processes in Desulphurization CaO-Al2O3 Slag Niță, Petre Stelian 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 driving process is that presenting the shortest time scale in comparable conditions with others. The time scale of the main physico-chemically driven process at interface steel-slag, on the slag side serves to evaluate the local interfacial flow. In this paper the conditions to evaluate the time scales are connected to the characteristic length scale of solutocapillarity effect in the form of Marangoni convection which results to be the faster process at the specified length scale taken into account, over the critical values of the solutal parameters, called threshold values. THE ANNALS OF “DUNAREA DE JOS” UNIVERSITY OF GALATI. FASCICLE IX. METALLURGY AND MATERIALS SCIENCE N0. 2 – 2009, ISSN 1453 – 083X

2009-01-01T00:00:00Z Gurău, Carmela Gurău, Gheorghe http://arthra.ugal.ro/handle/20.500.14043/25678 2020-09-03T13:24:38Z 2009-01-01T00:00:00Z

Effects of Plastic Deformation and Temperature on Microstructural and Mechanical Properties of a CuAlNi Shape Memory Alloy Gurău, Carmela; Gurău, Gheorghe In Cu 12.88% wt.Al4 %wt. Ni shape memory alloy the influence of plastic deformation and thermal treatments on the microstructures and hardness were studied by optical microscopy, scanning electron microscopy (SEM), Vickers Hardness. The plastic deformation on the austenite (b) was studied at temperatures T>Md when transformation can occur with no stress or strain induced condition. Lattice defects were introduced into stable austenite of a Cu Al Ni alloy by a hot rolling, in one pass, and subsequent quenching after leaving the rolling cylinders. From microstructural observations it has been seen that two b1 ’(18R) and g1 (2H) martensite phases coexists at different fractions in the undeformed and deformed states. Plastic deformation causes change in the relative amounts of b1 ’ and g1 martensites with a new morphology. The finest martensite structure has been obtained by thermo-mechanical treatment. The hardness test highlights the influence of treatments tightly correlated with the structures obtained. THE ANNALS OF “DUNAREA DE JOS” UNIVERSITY OF GALATI. FASCICLE IX. METALLURGY AND MATERIALS SCIENCE N0. 2 – 2009, ISSN 1453 – 083X

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