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preşedinTii colegiilor de redacţie Prof. dr. ing. NICOLAE AVRAM Prof. dr. ing. SCORŢEA COSTIN colegiul onorific (în ordine alfabetică) I.Ågren (Suedia), dieter ameling (GERMANIA), borş ionel, bordea marius, chiriac cornel, chiţu gheorghe,constantin radu, dobra gheorghe, dumitrescu constantin, R. S. HOUK (S.U.A.), T.Y.Hsu (China), ioan romulus, christopher lawson (danemarca), y. matsubara (Japonia), moldovan petre, nicolae avram, D. R. J. OWEN (SWANSEA, UK), radu nicu, roşescu gheorghe (grecia), roxana ruxandra (california), sofroni laurenţie, Jean-marc saiter (franţa),tudor paul, văzdăuţeanu vasile
Preşedinte al colegiului executiv de redacţie Prof. dr. ing. SCORŢEA COSTIN Colegiul executiv Prof. dr. ing. bejan Mircea Prof. dr. ing. bunea Daniel Prof. dr. ing. cănănău nicolae Prof. dr. ing. GEORGETA COŞMELEAŢĂ Prof. dr. ing. CIUCĂ ION Prof. dr. ing. gaba aurel Prof. dr. ing. GĂLUŞCĂ DAN GELU Prof. dr. ing. hepuţ teodor Prof. dr. ing. IONIŢĂ GHEORGHE Prof. dr. ing. mănescu tiberiu Conf. dr. ing. TODERIŢA NEMEŞ Prof. dr. ing. samoilă Corneliu Prof. dr. ing. SCORŢEA COSTIN Prof. dr. ing. SOFONEA GALAFTION Prof. dr. ing. Şaban Rami Prof. dr. ing. VIDA SIMITI IOAN Corpul referenţilor ştiinţifici Prof. dr. ing. anişoara ciocan, Prof. dr. ing. Crişan Aurel, Prof. dr. ing. constantin Nicolae, Prof. dr .ing. Miloşan Ioan, Prof. dr. ing. Nagy Emil, Prof. dr. ing. Maria Nicolae, Prof. dr. ing. Tamara radu, Prof. dr. ing. Doina Răducanu, Conf. dr. ing. Semenescu Augustin, Conf. dr. ing. Vizureanu Petrică Director General Editura Ştiinţifică F.M.R. Redactor Şef. Ing. BRÂNDUŞA FLORENTINA SCORŢEA Asistent Editura Ştiinţifică F.M.R. Procesare -tehnoredactare: ANCA ION	SUMAR ISSN 0461-9579 Chiţu Gheorghe: Orientări în direcţia creşterii ponderii trefilatelor în producţia de oţel a României ……………………………..…. 5 Ecaterina Matei, Nicolae Avram: tehnologii de tratare a apelor uzate cu conţinut de uleiuri şi suspensii solide …........... 15 Ghimbăşeanu Ioan: Sistem experimental de măsurare şi determinare a rezistenţei unui material semiconductor ...........……….. 24 Vermeşan Horaţiu, Vermeşan George: Unele consideraţii privind depunerea de straturi cu scop decorativ …………………. 28 Munteanu Sorin Ion, Ciobanu Ioan, Crişan Aurel: Particularităţi privind solidificarea barelor cu secţiune „U” cu deschidere medie între braţele paralele …………………………... 36 Florentina Potecaşu, Potecaşu Octavian, Cazacu Nelu, Dobrovici Sorin: Modificări ale caracteristicilor mecanice şi structurale la încălzirea semifabricatelor extrudate din aluminiu … 48 Nicoleta-liliana frăţilă: Crearea unui material compu s………. 54 + Informaţii din metalurgia mondială …….……………..……………………...…… I + Ştiri ………………………………………...……………………..…………………... II + Semnalări ………………………………………………………………..…………… III +Evenimente Internaţionale ……………...……………..……….………… IV ª Congrese-târguri-seminarii ……………………………………..…………… IV + Cărţi apărute la Editura Ştiinţifică F.M.R …………......…………............ V-VIII + Revista revistelor ………………………………………………….… 23, 35, 47, 53, 56

abstract metalurgia 4/2005

D.C.: 621.778.1 Chiţu Gheorghe: Trends for growing the weight of drawn products in romania’s steel production Metalurgia (57) 2005, nr.4, p.5 The prospective investigations results regarding the drawn products production worldwide and in Romania, are presented in this work. Worlwide, the weight of drown products represents about 20% of steel production. In the work some recommendations are given about the ways to act in order to increase the weight of drown products. Mainly, the goal of these actions consists in the trend of increasing the value added products weight in the global results of iron and steel industry. D.C.: 663.632; 628.311 Ecaterina MATEI, NICOLAE Avram: treatment technologies for wastewaters with oils and suspended solid contents Metalurgia (57) 2005, nr.4, p.15 Even if the literature indicates various advanced treatment techniques for wastewaters containing oils and suspended solids, the choosing of the applicative method it is made regarding technical and economical specific conditions and also quality indicators of the discharged water. Among these techniques, coagulation processes are especially recommended for suspended solids and/or nemiscible colloidal particles that are dispersed into liquid, with 1m - 100 mm diameters. The process is worldwide applied for industrial wastewater treatment, also for iron and steel industry, especially for blast furnace wet scrubbing wastewaters, where because of the high efficiency and the high flow rates of water, is considered BAT (best available technology). D.C.: 621.315.592 Ghimbăşeanu Ioan: Experimental system of measurement and determination of a semiconductor material resistance Metalurgia (57) 2005, nr.4, p.24 The semi-conductor material we analyse in this paper has a sensibly thermic resistance. The semi-conductor material is made up of sintherized mixtures of metal oxides, such as manganese, iron, cobalt, nickel, copper. The method we use in order to describe the resistance of the semi-conductor material is a modern method of data acquiring designed within the LabVIEW programme that uses LabJack U12 acquisition plate. D.C.: 621.793 Vermeşan Horaţiu, Vermeşan George: Some considerations on decorative layes deposition Metalurgia (57) 2005, nr.4, p.28 The paper present the most common surface

engineering technologies applied for decorative purposes. Important issues are PVD coatings for replacing the electrochemical depositions known as pollution technologies. D.C.: 621.746.62 Keywords: mathematical model, solidification, simulation Munteanu Sorin Ion, Ciobanu Ioan, Crişan Aurel: Particularities concerning the solidification of „U” bars with medium opening between parallel arms Metalurgia (57) 2005, nr.4, p.36 In this paper there are presented the results obtained by authors concerning the solidification of some bars with „U” section having a medium distance between the parallel walls of the section. It was used the computer aided simulation method with a software based on a 2D finite differences mathematical model. The case of eutectic cast iron parts, cast in molding batch on the base of silica sand, cured with CO2 , was analyzed. D.C.: 621.777.07; 669.71 Florentina Potecaşu, Potecaşu Octavian, Cazacu Nelu, Dobrovici Sorin: Modifications of mechanical and structural characteristics during the heating of Al extruded semifinished parts Metalurgia (57) 2005, nr.4, p.48 The paper presents the influence of parameters of thermic treatment upon mechanical characteristics and upon granulation of extruded aluminium semi-products. 24 treatment alternatives were applied for six temperatures and four thermal retardardation periods. The accomplished research showed that the temperature of thermic treatment must not exceed 400^oC in value as the bending behaviour of the semi-products worsens. For the experimented conditions the best bending behaviour was obtained on thermic treated samples at T3 = 400^0C with one hour soaking. Keywords: materiale, zone, compunere, computer, backtracking Nicoleta-liliana frăţilă: Creation of an compound material Metalurgia (57) 2005, nr.4, p.54 Creation of a compound material having several zones with four different materials. Solution of combination problem, so that two adjoining zones don’t have the same material.