D.C.: 669.162.262; 662.749.2: 669.162.16

Key words:blast-furnace, gaseification, hot iron, modelling

Nicolae Constantin, Diana Ionita, Augustin Semenescu, Cristian Viorel Semenescu: Analyticalmethodes forincreasing theefficiency ofironmaking inblastfurnaces byoptimalcorrelation ofcokeconsumption toblowingparametersthroughtuyeres

Metalurgia (55) 2003, nr.6, p.5

The physical and chemical processes that develop in the combustion zone of blast furnaces are dependent by many physical and metallurgical parameters, like: the blast air flow, the oxygen content in the blast air, the humidity, the pressure and the blast air flow temperature.

               The mathematical model presented establishes correlations between the blow parameters mentioned before and a performance function that is selected to reflect graphically the development of the physical and chemical processes that take place in the combustion zone of the blast furnace in case of using various auxiliary combustibles. This performance function is the theoretical temperature from the oxidant zone.

               The establishment of the model equations was made by starting from the functional real data of 1000m ³blast furnaces.

D.C.: 539.371

V. D. Cojocaru, Ion Cinca, Luci M. Angelescu, I. Popa: Effect ofthermalcycling onelastic andpseudoelasticcomponents ofdeformation

Metalurgia (55) 2003, nr.6, p.13

D.C.: 621.778.1

Ioan M. Balas: Influence ofdeformationscheme ondrawingprocess

Metalurgia (55) 2003, nr.6, p.19

As a result of the fact that most of the range of steel is obtained by plastic deformation, it’s important knowledge of the procesess, both theoretical and practical for obtaining high quality products.

Starting from the concept of obtaining superior mechanical properties on drawing, the work approaches a new way to determine the specific technological parameters, in constantly maintained conditions, under the limit value, of the necessary drawing force.

D.C.: 669.184.244.86

Nicolae-Sorin Paun : Maximisation ofconverteryield asmeltingfurnace

Metalurgia (55) 2003, nr.6, p.26

In this paper, a mathematical model and a computing algorithm are presented in order to establish the mainparameters  of converting process for copper matte, in order to ensure good process parameters.

 In this way both matte characteristics and oxygen content in blown air could be established by computation.

Thuse, different types of converters could be utilised for copper concentrates melting or for by-products melting, without any possibility to affect the main process indicators.

D.C.: 669.2/28-3-24

Key-words: molybdenum, wolfram (tungsten), copper, blending, paraffin, copper diffusion in liquid state, pseudo-alloy

Daniela Florentina Tărâtă, Alina Duta: Pseudoalloysbased on Mo-Cu-Ni, withrefractoryalloys in theelectricarc

Metalurgia (55) 2003, nr.6, p.31

In the paper, results of investigation related to the performance of electrical contacts for high-tension and high-power equipment, of Mo-Ni-Cu pseudo alloys, are presented.

The production of such contacts could be condidered, using powder metallurgy technics.

D.C.: 621.785.78

Key words:cam, hardening, superficial layer, hardening

Tiberiu Manescu, Augustin Emil Pastor, Camelia Pinca Bretotean: Superficiallayerhardening ofplanecams ofhighpower Dieselmotors

Metalurgia (55) 2003, nr.6, p.35

Superficial layer of the cams, which are used for valve setting at high power Diesel engines are hard over, bused during engines running. The shock appears when contact force between cam and follower is changing the value or the direction. The work proposal is to increase the mechanical properties of cams by hardening with high frequency the superficial layer.

• Constantin Nicolae, Diana Ionita, Semenescu Augustin, Semenescu Cristian Viorel :Metode analitice pentru eficientizarea elaborarii fontei în furnal prin corelarea optima a consumului de cocs cu parametrii de suflare la gurile de vânt, pag. 5
• Cojocaru V. D., Cinca Ion, Angelescu M.Luci, Popa I.:Influenta ciclarii termice asupra componentelor elastica si pseudo-elastica a deformatiei, pag. 13
• Balas M. Ioan:  Implicatiile schemei de reduceri asupra procesului trefilarii, pag. 19
• Paun Nicolae-Sorin:Maximizarea gradului de utilizare a convertizorului ca agregat de topire, pag. 26
• Daniela Florentina Tarâta, Alina Duta:Pseudoaliaje Mo-Cu-Ni cu rezistenta refractara în arcul electric, pag. 31   
• Manescu Tiberiu, Pastor Emil Augustin, Camelia Pinca Bretotean:Durificarea stratului superficial al camelor plane de la motoarele Diesel de mare putere, pag. 35

• Informatii din metalurgia mondiala, I
• Semnalari, II
• Stiri, III
• Stiri de presa, IV
• Noutati din trecut, V
• Expozitii, conferinte, VII
• Aniversare, VIII
• Recenzie, IX
• Carti aparute la Editura Stiintifica F.M.R., XI-XIV
• Revista revistelor, 12, 18, 34,41, VI, VII, VIII