Redacţia, administraţia: Calea Griviţei, nr.83, Sector 1, O.P. 12, Cod 010705, Bucureşti Tel.: 004 021/ 310.71.38 GSM: 0722 665 071; 0724 537 051 Fax: 004 021/ 310 71 38 E-mail: redactia@metalurgia.ro; www.metalurgia.ro Contul EDITURII ŞTIINŢIFICE F.M.R.: Lei: BCIŢ, Sucursala Rosetti, Bucureşti Cod IBAN: RO55 CBIT 4260 1037 4300 1000 USD: BCIT Sucursala rosetti, Bucureşti Cod IBAN: RO21 CBIT 4260 1037 4300 2000 Euro: BCIT Sucursala rosetti, Bucureşti Cod IBAN: RO84 CBIT 4260 1037 4300 3000 Costul unui abonament: lei 4 800 000 Copyright © 2005 EDITURA ŞTIINŢIFICĂ F.M.R. Nici un material din această revistă nu poate fi reprodus, difuzat sau folosit în orice alt mod decât cu aprobarea scrisă a editorului. Manuscrisele şi documentele nepublicate (fotografii, pliante, cărţi) expediate pe adresa redacţiei, din iniţiativa autorilor, nu se restituie. Potrivit art.206 CP, responsabilitatea juridică pentru conţinutul articolului aparţine autorului. De asemenea, în cazul unor agenţi de presă şi personalităţi citate, responsabilitatea juridică le aparţine. Reproducerea de părţi din această revistă este permisă cu acordul scris al editorului The copyright of parts from this publication is allowed with the written agreement of the editor	Metalurgia revistă fondată în 1948 Revistă editată de editura ştiinţifică f.m.r. preşedintele onorific al editurii ştiinţifice f.m.r. Dr. Ec. Lepădatu V.Gheorghe Nr.12 decembrie Editura Ştiinţifică F.M.R. Lei : BCIŢ, Sucursala Rosetti, Bucureşti; Cod IBAN : RO55 CBIT 4260 1037 4300 1000 USD : BCIT Sucursala rosetti, Bucureşti; Cod IBAN : RO21 CBIT 4260 1037 4300 2000 Euro: BCIT Sucursala rosetti, Bucureşti; Cod IBAN : RO84 CBIT 4260 1037 4300 3000 Cod fiscal: 9471842 Calea Griviţei, nr.83, Sector 1, O.P. 12 Cod 010705 Bucureşti Tel: 004 021/ 310.71.38; 0722 665 071;0724 537 051 Fax: 004 021/ 310.71.38 E-mail: redactia@metalurgia.ro www.metalurgia.ro 2005
preşedinTii colegiilor de redacţie Prof. dr. ing. NICOLAE AVRAM Prof. dr. ing. SCORŢEA COSTIN
colegiul onorific (în ordine alfabetică) I.Ågren (Suedia), ameling dieter (GERMANIA), bensabra hakim (algeria), borş ionel, bordea marius, chabour salem (algeria), chiriac cornel, chiţu gheorghe, constantin radu, dobra gheorghe,dumitrescu constantin, FRANCISCA PORUSKI (OHIO STATE UNIVERSITY, U.S.A.), gencang yang (china), P.D. hodgson (deakin university, Australia), R. S. HOUK (S.U.A.),T.Y.Hsu (China), I. IMRIŠ (TECHNICAL UNIVERSITY OF KOŠICE, SLOVAK REPUBLIC), ioanromulus, jiang wan (china), 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), TAKEHIDE SENUMA (OKAYAMA UNIVERSITY), TATEO USUI (OSAKA UNIVERSITY),TOBIAS FRANKE (COLORADO UNIVERSITY, U.S.A.), văzdăuţeanu vasile, xianqing you (china)
Preşedinte al colegiului executiv de redacţie Prof. dr. ing. SCORŢEA COSTIN Colegiul executiv Prof. dr. ing. bejan Mircea Prof. dr. ing. cănănău nicolae Prof. dr. ing. GĂLUŞCĂ DAN GELU Prof. dr. ing. hepuţ teodor Prof. dr. ing. IONIŢĂ GHEORGHE Conf.dr. ing. TODERIŢA NEMEŞ Prof. dr. ing. MARIA NICOLAE Prof. dr. ing. Ripoşan Iulian Prof. dr. ing. samoilă Corneliu Prof. dr. ing. SCORŢEA COSTIN Prof. dr. ing. SIMITI IOAN VIDA Prof. dr. ing. SOFONEA GALAFTION Prof. dr. ing. Şaban Rami 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 Boiciuc Radu, Simona Boiciuc: Studiu privind comportarea la coroziune a tablelor zincate termic funcţie de gradul de microaliere cu nichel a băii ………………………...………………..……… 5 Ciobanu Ioan, Munteanu Sorin Ion, Crişan Aurel: Influenţa emperaturii pereţilor formei de turnare asupra modulului de solidificare real al pieselor turnate ........................................................ 12 Tintelecan Marius: Evoluţia forţei în procesul de trefilare a sârmelor de oţel cu strat protector de Zn (respectiv Zn-Al) ……………………………………………..………..…… 24 Corneliu Stănăşilă, Constantin Nicolae, Stănăşilă Octavian, Toşcuţă Dragoş: O nouă tehnologie de uscare a cărbunilor……………………………………………...…………... 32 Nistor Liviu: Dezvoltarea regimului de trefilare al sârmelor subţiri din curbele ecruisării materialului metalic …...........................…. 37 ROMAN Costantin, Aureliana Geta ROMAN: Procedee şi tehnici de control financiar …....................................................................................... 43 ROMAN Costantin, Aureliana Geta ROMAN: Realizări în domeniul investiţiilor directe în perioada de tranziţie ………………...… 50 + Ştiri ........................................................................................................................................ I + Semnalări ……………………………….………………………..….…………………… VI +Evenimente Internaţionale …………….…..…..................…...…….……..… XI ª Târguri ………….………………………………………………………….……. XI + Recenzie …………………………………………………………………………………. XV + Indici de autor (2005) …………………………………………………………………. XIX + Cărţi apărute la Editura Ştiinţifică F.M.R …..…….......……...……...….... XXI - XXIV + Revista revistelor…………………..…………..…………….……… 23, 31, 49, 52, XVIII

abstract metalurgia 12/2005

D.C.: 620.193.5 Boiciuc Radu, Simona Boiciuc: Study regarding corrosion behavior of hot dip galvanizing steel sheets depending on bath nickel micro-alloying grade Metalurgia (57) 2005, nr. 12, p. 5 This work aims to study corrosion behavior of thermal galvanizing pieces processed in a bath that was micro-alloyed by Nickel in different concentrations (0.02%; 0.06%; 0.09%; 0.11%; 0.16%; and 0.20%). galvanizing bath becomes more fluid by micro-alloying and on deposed layers may be remarked a inter-metallic layers thickness decrease like FexZny, while pure zinc layer on surface grows in thickness. This phenomena takes place up to 0.11% Ni concentration in thermal galvanizing bath and above this the inter-metallic layers thickness remain approximately constant. Because of decreasing the inter-metallic layers thickness the samples have the lowest corrosion speed at 0,11% Ni concentration at wet heat and saline mist. Therefore, in industrial galvanizing installations an important saving of zinc quantity used may be made, getting in the same time zinc coated pieces with higher corrosion resistance. D.C.: 621.746.628 Ciobanu Ioan, Munteanu Sorin Ion, Crişan Aurel : The influence of the mould walls temperature on the real solidification module of castings Metalurgia (57) 2005, nr. 12, p. 12 In some previous papers the authors defined the concept of real solidification module of castings. In the case of permanent-mould casting the real partial solidification module for some zones of the casting and implicit the total solidification module of the casting can be modified by forced cooling or heating of some mould walls. In this paper it is established the computational mode for the real solidification module in this case. There are established too the equations to calculate the cooling coefficients used in the equation of the real solidification module. There is established too, an equation to calculate the temperature that the mould must be heated when we wish to multiply the real solidification module with a factor “n”. In the case when the heating temperature for the mould wall is determined based on other criteria, it is calculated a fraction of the part surface that is in contact with the mould which temperature must be modified to obtain the desired multiply of the real solidification module. D.C.: 621.778.1 Key words: hard drawn steel wire, hot dipped galvanized wire, steel wire covered with Zn-Al alloy, drawing, drawing force Tintelecan Marius: The drawing force evolution in the steel wire drawing process with protective layer of Zn (or Zn-Al) Metalurgia (57) 2005, nr. 12, p. 24 The paper deduces the force evolution in the drawing process of the steel wires (by practical measurements), which can be found in one of the three next variants: 1. variant 1: lubricant career phosphating-boraxing layer,

2. variant 2: lubricant career zinc layer, 3. variant 3: lubricant career Zn-Al alloy layer. After recording the drawing force for each of the three cases, a comparison was made in order to clasify the three mentioned cases. D.C.: 662.6; 66.047 Corneliu Stănăşilă, Constantin Nicolae, Stănăşilă Octavian, Toşcuţă Dragoş: New technology of coal’s drying Metalurgia (57) 2005, nr. 12, p. 32 In this paper, one presents a new solution regarding the coal’s drying. The solution has been experimented in the case of drying ceramics and separately timber, the gaseous agent crossing the coal layer alternatively, by a system of flaps. One also presents some thermic and gasodynamic computations and a thermic balance, the drying efficiency reaching 93%. D.C.: 621.778.1; 621.787 Key words: wire, true stress, true strain, drawing, hardening, material law Nistor Liviu: The development of drawing process for fine wires from hardening metallic material curves Metalurgia (57) 2005, nr. 12, p. 37 Starting from real strain state analysis of the deformed wire the producer of a such product can have the certainty to obtain precise sizes with a high quality, with a proper metallographic structure and superior physical-mechanical characteristics. Stress-strain curves deformation, obtained from experimental tests, can deliver the precise information concerning regimes of wiredraw. The yield strength values obtained from Ludwik-Hollomon material law, give the measure of the limits for tension of drawing tension (stress) for a whole technological process of wire drawing. In this paper it was underlined the effect of cold hardening on yield strength and it was determined a law of material for two qualities of steels which an important weight in wire production. D.C.: 330.13 ROMAN Costantin, Aureliana Geta ROMAN: Proceedings and techniques of financial control Metalurgia (57) 2005, nr. 12, p. 43 Some aspects regarding the preliminary general study, the accountancy-documentary control and the control of facts are presented in the article. D.C.: 338.063.5 ROMAN Costantin, Aureliana Geta ROMAN: Achievements in the field of direct investments during the transition period Metalurgia (57) 2005, nr. 12, p. 50 Taking into account the importance of direct foreign investments for the process of restructuring and transition to the market economy, the authors present some interesting aspects in this field.

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