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Metalurgia INTERNATIONAL (magazine set-up
in 1995) English version,
published by romanian metallurgical
foundation Honorary president
of scientific
publishing house f.m.r. Dr. ec. Lepădatu v. gheorghe
(2007)
no.6 romanian metallurgical
foundation Scientific publishing
house |
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Honourary
Staff (in alphabetical order) bensabra hakim
(algeria), BORDEA MARIUS, chabour salem
(algeria), gencang yang
(china), R.
S. HOUK (S.U.A.), I. IMRI (TECHNICAL
UNIVERSITY OF KOICE,
SLOVAK REPUBLIC), pușici miho (Slovenia), roșescu gheorghe
(grecia), roxana ruxandra
(california), w.m. nicola
(tri. state university angola, indiana, s.u.a.), xianqing you (china) |
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editorial
board : Prof. colan horia Ph. D., member of Romanian Academy of
Technical Sciences Prof. Coșmeleață georgeta Ph. D. Prof. Elena drăgulănescu Ph. D., Catedra
GDGI, Aerospatial Engineering Faculty,
Bucharest Politechnical University Prof.
Dumitrescu Constantin Ph. D., deputy member of
Romanian Academy of Technical Science Prof. French David Ph. D., CSIRO Energy Technology, Australia Prof. Gălușcă Dan-Gelu Ph. D. Prof.
Mihaela Grigore Ph. D., University of New
South Wales, Sydney, Australia Prof. Lawson Cristopher Ph. D., Copenhague Technical Institute, Denmark Prof. Nicolae Avram Ph. D. Prof. Maria Nicolae Ph. D. Prof.
doc. Oprea Florea Ph. D., member of Romanian
Academy of Technical Sciences Prof.
Veena Sahajwalla Ph. D., University of New South Wales, Sydney, Australia Prof. Sakurovs Richard Ph. D.,
CSIRO Energy Technology, Australia Prof. Salvo Luc Ph. D., Grenoble National Politechnical
Institute, France Prof. Saiter Jean-Marc Ph. D., Rouen University, France Prof. Scorțea Costin Ph. D. Prof. Simiti Ioan Vida Ph. D. Prof.
Sofroni Laurenție Ph. D., member of
Romanian Academy of Technical Sciences Prof. Șaban Rami Ph. D., Dean of Materials Science Faculty, Bucharest
Politechnical University Prof. ȘTEFĂNESCU DORU Ph. D, Ohio State University Columbus, S.U.A. advisory board : Prof. bejan Mircea Ph. D Prof. cănănău nicolae Ph. D Prof. hepuț teodor Ph. D Prof. Miloșan Ioan Ph.
D. Prof. Doina Răducanu Ph. D Prof. samoilă Corneliu
Ph. D Prof. SOFONEA GALAgTION
Ph. D Prof. VARGA
BELA Ph. D Managing Director: Editor-in-chief: Professor Scorțea
Costin Ph. D. Manager Scientific Publishing House F.M.R.: eng. Florentina
Brândușa Scorțea |
Contents Issn 1582 2214 Ciobanu Ioan, Sofroni Laurentie, Speranța Stomff,
Mașniță Mihai, Monescu Vlad, roșescu
Gheorghe: Establishment of
the active layer thickness in The ecological
moulds case realised from two
layers
...
5 SONTEA Sever, POPA Marin: Considerations regarding a protection system during the products control
with ionizing radiations
....
14 Alupei-Cojocariu Ovidiu, Semenescu Augustin: Chains of
Dimensions in computer aided design environment
..
18 MUREȘAN
Mihaela: Fleet
monitoring using GPS and DGPS
Technology
.. 27 VIZUREANU Petrică, STRUL Moisa: The analysis of
a numerical method for radiation
heating transfer in electric furnaces
... 34 MILOSAN Ioan: Aspects
about the influence of the heat
treatments parameters over the
microhardnesss variation of a S.G. cast iron
.... 41 ? FOSECO
Turbostop system reference list
I-II ? Invitation
.................
..
....... III-V ? Press
Release..............
..
..
....... VI-X ? New books,
published by romanian metallurgical
foundation
.
........
..... XI-XII |
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abstract
metalurgia International 6/2007
|
D.C.: 621.746.628 Ciobanu Ioan , Sofroni Laurentie, Speranța Stomff,
Mașniță Mihai, Monescu Vlad, roșescu
Gheorghe: Establishment
of the active layer thickness in the ecological moulds case realised from two
layers Metalurgia International (vol. XII), no.6, 2007,
p. 5 In a previous paper it was analysed several
ecological pouring procedures based on moulds made from sand without bond,
bonded by depressurisation. At the Politehnica University of Bucharest was
experimented a pouring proceeding in combined moulds with active layer from
loam with cold hardened resin and sand holder layer without bond, bonded by
depressurisation. In this paper is presented the dimensioning mode (way) of
the mould active layers thickness starting from the condition that after
pouring of the casting the bond from the active layer is burned out
completely, so it can be secured an easy knock - out of mould of it, and the
sand could be recycled, it mustnt be necessary regenerating operations. D.C.: 537 SONTEA Sever, POPA Marin: Considerations regarding a protection system during
the products control with ionizing radiations Metalurgia International (vol. XII), no.6, 2007,
p. 14 The following aspects are presented in this paper: -
the influence of the ionizing radiations on the human body and systems of
protection; - the organization of
the non-destructive control in workshops and plants. Key
words: tolerances, chain of
dimensions Alupei-Cojocariu Ovidiu, Semenescu Augustin: Chains of
Dimensions in computer aided design environment Metalurgia International (vol. XII), no.6, 2007,
p. 18 The paper presents some considerations about
assigning tolerances and computing the dimensions chains using a CAD Program
developed in AutoCADź with AutoLISPź. The presented methods to assign
tolerances and solve the direct and the inverse problems of dimension chains
are powerful design accessories that can increase the design cadence and
provide the usual information needed without consulting specialized,
classical printed documents. The assignation of tolerances is in total
concordance with the used ISO standards and the results are verified through
several moths of use. Key words: GPS, DGPS, GPRS, generic
architecture, fleet management, geointelligence, image handling for
decision support MUREȘAN
Mihaela: Fleet
monitoring using GPS and DGPS Technology Metalurgia International (vol. XII), no.6, 2007,
p. 27 The competitivity is a real concern of
the organizations involved in
the metallurgical area. The new B2B and B2C approaches involve a better
control of the supply and delivery processes. Consequently, the
implementation of the new information and communication technologies in the
management of the supply and sales processes has a great importance in the
enterprise strategy. The fleet monitoring using GPS technology represents |
a guarantee for the safety of the
transport and contributes to the increase of the efficiency of the transport
activities for the actors involved in metallurgy. The implementation of a
high technology solution based on GPS communication for the monitoring of
transports along the whole itinerary (during supply or delivery activities),
and the immediate alert in case of various non-procedural behavior, increases
the transport security and reduces the risk of accidents and disasters. The fleet
monitoring using GPS and DGPS technologies contributes to a greater
efficiency of the transport activities, by reducing the costs. The permanent
monitoring of the fleet contributes to select the shortest way to the
destination, to maintain a constant optimum speed of the vehicles, which
involves a fuel reduced consumption
and a better exploitation of the vehicles.
The
transport management system integrates detection and communication
intelligent equipment, various communication technologies and networking
solutions with powerful computers and software. The
positioning, monitoring and protection system integrating GPS technology
represents an innovative solution for
the fleet management for the enterprises. The use of
the GPS system opens the way for a new generation of information systems
using geospatial information. The geoinformation provided by the GPS system
could be used in various applications, such as: positioning and monitoring
the behaviour of the objects static or in movement, navigating, measuring the
surfaces etc. These new approach introduces the concept of image handling for decision support which
involves a better geoimage handling in
order to make easier for decision makers to
discover, access, and integrate geospatial information in decision-support
scenarios. Key words: electric furnaces, heat transfer,
radiation, view factors VIZUREANU Petrică, STRUL Moisa: The
analysis of a numerical method for radiation heating transfer in electric
furnaces Metalurgia International (vol. XII), no.6, 2007,
p. 34 We analyzed
the possibilities of calculation by numerical methods the view factors values
and so to improve the heat change by radiation, by optimizing the way to
configure a charge in the working volume of the furnace. For regular
geometric surfaces there are available in literature formulas to determine
these factors, but for the irregular ones with various orientations it
becomes almost impossible to establish these factors by analytical means. It
requires the automating computing and numerical analysis methods. Key words: Materials Science, bainitic s.g. cast iron, heat
treatment, wear MILOSAN Ioan: Aspects
about the influence of the heat treatments parameters over the
microhardnesss variation of a S.G. cast iron Metalurgia International (vol. XII), no.6, 2007,
p. 41 The paper
presented here belongs to the researches about the influence of the heat
treatments parameters over the microhardnesss variation of a S.G. Cast Iron
at the end of an wear process. It was determinate the variation of the
rapport (d) between
the microhardness (D H) and the
distance of the wear surface (Dl). |
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1. The METALURGIA INTERNATIONAL magazine
receives manuscripts of papers including basic scientific research and industrial research in the following fields:
metallurgy, materials science and engineering and different relating
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