CENTRUL DE INFORMARE SI DOCUMENTARE
PENTRU METALURGIE
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EDITURA STIINTIFICA F.M.R. CENTRUL DE INFORMARE SI DOCUMENTARE PENTRU METALURGIE |
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 PRESEDINTII CONSILIULUI STIINTIFIC DE REDACTIE Prof. dr. ing. AVRAM NICOLAE, Prof. dr. ing. COSTIN SCORTEA PRESEDINTE ONORIFIC AL COLEGIULUI EXECUTIV DE REDACTIE Prof. dr. ing. COSTIN SCORTEA Consilieri stiintifici Prof. dr. ing. COSTIN SCORTEA, Prof. dr. ing. MARIA NICOLAE, Prof. dr. ing. DOINA RADUCANU, Prof. dr. ing. NICOLAE CONSTANTIN, Conf. dr.ing. AUGUSTIN SEMENESCU COLEGIUL ONORIFIC EXECUTIV DE REDACTIE Prof. dr. ing. MIRCEA BEJAN Prof. dr. ing. DANIEL BUNEA Prof. dr. ing. VICTOR CONSTANTINESCU Prof. dr. ing. ADRIAN DIMA Prof. dr. ing. ION CIUCA Prof. ing. DORIN DOBROVICI Prof. dr. ing.GHEORGHE IONITA Prof. dr. ing. IOAN GIACOMELLI Prof. dr. ing. PETRE NITA Prof. dr. ing. TIBERIU RUSU Director General Editura Stiintifica F.M.R. Redactor Sef. Ing. BRANDUSA FLORENTINA SCORTEA Asistent Editura Stiintifica F.M.R. Procesare-Tehnoredactare: ANCA ION |
Revista METALURGIA Numarul 4 aprilie 2003 ISSN 0461-9579 ABSTRACT
D.C.: 574; 003.1; 65. 001.4
Costin Scortea, Gheorghe V. Lepadatu:
Point ofviewregardingenvironmentcontours andenvironmentbalances atispat-sidexsteelworksunder theproductionprofitabilityrequirements. Part I
Metalurgia (55) 2003, nr.4, p.5
The Romanian ISPAT-SIDEX Iron and Steelworks can’t be considered as major polutant in its regional landscape. Nevertheless, the company is deploying big efforts in order to decrease the impact of some technological processes on environment.
During last year, a substantial grow-up of steel production was recorded in this company, due to the positive effect of provatisation with ISPAT-one of the most important steel producers all over the world.
The present paper include some personal opinions of the authors and proposals for environment balances, worked aut by members of scientific departments belonging to „Wallachia” University of Târgoviste-faculty of Materials Science and Engineering. They started important scientific works in the field of industrial environmental engineering, particularly in the Romanian Iron and Steel Industry, in the years 2001-2002. Works are continuing in 2003.
Key words: oxygen, converter
Iorga Gheorghe, Florian Zaman, Tudorita Zaman:
bo
Fprocessjubilee,-moment ofexistingsteelmakingprocessesevaluation
Metalurgia (55) 2003, nr.4, p.8
The conclusions relying on the papers sustained at the Conference on the occasion of 50 years since the creation of the LD steelmaking method are presented. Proper research trials on the no.1 LD steel shop of ISPAT-SIDEXgalati were used too.
D.C.: 621.793
Key-words: Metallization. Vapourization. Adherence. Machinery parts. Technology
Daniela Florentina Tărâtă:Researches forreconditioning themachineryparts bymetellization
Metalurgia (55) 2003, nr.4, p.19
This paper presents the results of some researches for reconditioning the machinery parts by metallization, exemplifying on a commercial company.
The results confirm the considerable technical-economical effects of this technology application.
D.C.: 669.18
Marian Ionescu:
Modification ofsomephysico-mechanical properties as aresult ofdesulphurizationmechanismspecifically tol.f
p
rocess
Metalurgia (55) 2003, nr.4, p.23
The modern technology of manufacture of high-grade steel by the L.F. process (ladle-furnace) considering both the increase of melting unit and the increase of high-grade steel by the improvementsome physico - mechanical properties.
The typical physico-chemical processes, which take place between the metallurgical phases are produced due to injection some strongly desulphurized powders colligated to injection of inert gas Ar together with the electromagnetic continuous swirling of metal. The efficiency of metallurgical processes consists of strongly decrease of the sulphur content from metallic both that ascertains the increase some physico-mechanical properties: tensile strength and resilience; by comparison with the steels obtained by classical technologies.
D.C.: 539.374.
Luci M. Angelescu, V. D. Cojocaru, Ion Cinca
:
Effect ofinitialstructure onsuperplasticitycharacteristics of anindustrialalloy
Metalurgia (55) 2003, nr.4, p.26 Superplasticity of metallic materials is a property essentially bonded to their structural state. Apart from the microstructural evolution during the superplastic deformation, an important aspect is also the initial microstructural state of the material, which makes the subject of the research work presented in this paper. Starting from three different initial structural states, the studied alloy, an industrial duralumin, has been subjected to deformation in different temperature and strain rate conditions, the superplastic characteristics having been studied in each case.
D.C.: 620.172.2
Key words: equipment, biplane butterfly valve, tensions, deformations, finite element
Tiberiu Manescu
:
Doubleplanebutterflyvalvebehaviourworking instationaryregime ofloading
Metalurgia (55) 2003, nr.4, p.34
The paper presents a stady of tensions and deformations resulted during a static loading of a biplane butterfly valve of 1,500 mm diameter, under a pressure p = 1 N/m
2, using finite elements methode, experimentally checked, using electrical tensiometric resistive method. Knowledge about the exact behaviour of such type of valves during operation is very important, in ordin to establish the maximal permitted losses regulations. |
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