Recent
4
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Vol. 2 (2001), Nr. 2 (4) |
Numărul 4 al Revistei RECENT a fost:
- Universităţii "Transilvania" din Braşov
- Consiliului Judeţean Braşov (prin Comisia de Cultură, Învăţământ, Cercetare, Culte
şi Muzeul Judeţean de Istorie Braşov)
CONTENTS
- Vasile BEJAN Cultura ca stare de spirit şi factor de progres
- Romeo CIOARĂ, Vladimir MĂRĂSCU-KLEIN, Cătălin GHEORGHE, Flavius
SÂRBU, Ştefania BĂLTĂREŢU
Simulated enterprises - an efficient, modern and
attractive way for practical training
- Ruxandra CIOARĂ, Romeo CIOARĂ
A new constructive variant of type I
linkage - genesis and application
Strategic possibilities of the engineer-economic
specialization in Brasov University
Regarding post-factum economic and financial
studies finality
Paternats recognition in artificial intelligence
- Badea LEPĂDĂTESCU, Mihaela POPESCU
Superfinishing technology and equipment for
the tightness surfaces of the Gate valve DN3
- Vladimir MĂRĂSCU-KLEIN, Director CCMSP
Evaluation of research Center for Manufacturing
Systems and Machines
- Vladimir MĂRĂSCU-KLEIN, Coordonator specializare OGP
The specialization “Manufacturing Organizing and
Planning” – the answer to the actual and future requests of the
Romanian economy
- Daniel MUNTEANU, Alexandru MUNTEANU, Joop SCHOONMAN (Olanda)
Wear behaviour of TiN, Ti(C,N) and (Ti,Al)N
thin films coated on high-alloyed steels
- Mihaela POPESCU, Badea LEPĂDĂTESCU
The method of processing the external surfaces
by superfinishing
- Ion TUREAC, Romeo CIOARĂ, Maria POPESCU, Anca
FORIŞ, Cătălin GHEORGHE, Răzvan DOBREA
Dematerialization of the products – resource of
durable utilization in the machinery building
Study concerning the "5S" of the maintenance in
the Romanian firms
Romeo CIOARĂ, Vladimir MĂRĂSCU-KLEIN,
Cătălin GHEORGHE,
Flavius SÂRBU, Ştefania BĂLTĂREŢU
SIMULATED ENTERPRISES - AN EFFICIENT, MODERN AND
ATTRACTIVE WAY FOR PRACTICAL TRAINING
» Abstract. The Higher
Education in Romania is in constant search for new improvement means of
its specifically forms of manifestation, new ways of development of the
instruction progress of the students. The accent is more and more put on
the practical activities, on the active participation of the students at
all the didactic activities. The simulated enterprises - organized as
multidisciplinary laboratories - were evaluated and characterized as a
very suitable and efficient method of training. Worldwide success of
networks of simulated enterprises motivated the appearance of organization
initiatives of simulated enterprises in Romania, some of them already
functional and affiliated to EUROPEN. In the paper are presented the
actions development by the authors for organizing at Transilvania
University of Brasov of a simulated enterprise. There are specified the
objectives that this future simulated enterprise proposes, its
addressability, the activities already finalized and the results that were
obtained.
» Keywords: simulated
enterprises, practical training, EUROPEN
A NEW CONSTRUCTIVE VARIANT OF TYPE I LINKAGE - GENESIS AND
APPLICATION
» Abstract. Today’s industrial
environment specifically demanded the conceiving of a device for sensitive
delivery of rods, usable for automatic machines by cold forming. The
researches lead to an original solution, with several variant, witches is
based on a new constructive solution of linkage. The paper synthetically
presents the genesis of this new solution, including the theoretical
aspect. It is also highlighted the originality of this device that uses
the described linkage.
» Keywords: sensitive delivery,
device, linkage, invention
STRATEGIC POSSIBILITIES OF THE ENGINEER-ECONOMIC SPECIALIZATION IN
BRASOV UNIVERSITY
» Abstract. Most technical
universities have developed, in the last ten years, the engineer-economic
specialization. It’s mission in to prepare engineer specialists that can
develop there careers by solving the complex problems that appear at the
interface company – external environment, in the context of Romanian
market economy. The big market demand for these specialists is sustained
by the academic offer but the Romanian economic environment dynamic needs
a continuous improvement of the curricula. The strategic point of view
that can be taken about the engineering – economical specialization and
specialist offer the possibilities to identifier new perspective for the
academic program.
» Keywords: strategy, SWOT,
engineer-economic specialization
REGARDING POST-FACTUM ECONOMIC AND FINANCIAL STUDIES FINALITY
» Abstract. Every economical and
financial study has to finish with an optimal set of measures that is
looking to improve activity. In many cases the biggest numbers of measures
don’t allowed selecting the optimal measure. Consequently, is necessary
systemization of these measures and their application based on realistic
program.
» Keywords: management information
systems, planning, strategy, financial analysis, profitability
PATERNATS RECOGNITION IN ARTIFICIAL INTELLIGENCE
» Abstract. In the recognition
mechanism of a paternat from a data base, by a expert system, the hardest
problem is that the gathered data from the environment must be transferred
to a “short time” memory. The data must be selected and hierarhization by
importance. Not all the gathered data contribute to the establishment of
the paternat. The selection of the data influence or not the establishment
of a paternat is very difficult to modelate mathematically. In the paper
is presented a model of selection of those facts and rules that would lead
to the identification of the most propitious paternat in the shortest time
possible.
» Keywords: paternat, artificial
intelligence, data base, expert system
Badea LEPĂDĂTESCU, Mihaela POPESCU
SUPERFINISHING TECHNOLOGY AND EQUIPMENT FOR THE TIGHTNESS SURFACES
OF THE GATE VALVE DN3
» Abstract. The paper presents the
technology and the equipment for superfinishing the surface of the scaling
ring in the Wedge Gate Valve DN3. This constructive solution makes
possible the processing of the tightening surfaces with a device adaptable
on the normal late. The main advantages are a great productivity and the
possibility to eliminate the placing and fastening errors.
» Keywords: quality, superfinish,
accuracy, flexibility
Vladimir MĂRĂSCU-KLEIN, Director CCMSP
EVALUATION OF RESEARCH CENTER FOR MANUFACTURING SYSTEMS AND MACHINES
» Abstract. In the paper is shown the
stages and the results of the evaluation of research center for
manufacturing systems and machines (CCMSP), in the period June 2000 and
March 2001. As results of CNCSIS evaluation, the CCMSP center was
classified as B type, and is occupied the sixth place at national level.
» Keywords: evaluation, research
center, manufacturing systems, machines
Vladimir MĂRĂSCU-KLEIN, Coordonator specializare
OGP
THE SPECIALIZATION “MANUFACTURING ORGANIZING AND PLANNING” – THE
ANSWER TO THE ACTUAL AND FUTURE REQUESTS OF THE ROMANIAN ECONOMY
» Abstract. A complete higher
educational profile is defined through all of the three forms (short, long
and postgraduate), between them existing a bond and being build “bridges”
or passing conditions between one to another. The specialization
“Manufacturing organizing and planning” – college has as main objective to
establish a real and efficient synergy between the different components of
the productive activity: the technique, labor force and materials
resources. This specialization is situated to the junction between the
engineering / technical field and the economical one, the professional
competence being builds upon the interference of the two domains
(technical and economical one).
» Keywords: manufacturing, organizing,
planning, college
Daniel MUNTEANU, Alexandru MUNTEANU, Joop
SCHOONMAN (Olanda)
WEAR BEHAVIOUR OF TiN, Ti(C,N) AND (Ti,AL)N THIN FILMS COATED ON
HIGH-ALLOYED STEELS
» Abstract. Within the frame of this
work, Plasma Enhanced Chemical Vapor Deposition was used in order to
prepare hard coatings, TiN, Ti(C,N) and (Ti,Al)N types, on high-alloyed
tool steels. The tribological properties of the coatings have been
investigated by friction coefficient, roughness and microhardness
measurements. Wear tests were carried out in order to establish the weight
loss. An X-ray diffraction analysis was used to investigate the structure,
grain size and residual-stress levels. GD-OES and SEM analysis were used
to obtain the concentration depth profiles of constitutive elements and to
estimate the coatings surface morphology respectively. For all that, the
smallest values were registered in the case of (Ti,Al)N variant and
biggest in the case of Ti(C,N) variant. Referring to the friction
characteristics, the friction coefficient values depend on the compound
nature and the work friction temperature depends on the layer roughness
values. Generally, the wear tests revealed good and similar results for
the TiN and Ti(C,N) layers. According with the experimental results, a
moderate residual compressive-stress and a high hardness are necessary, to
reach a good durability of layers.
» Keywords: PECVD, thin-film, steel,
characterization
Mihaela POPESCU, Badea LEPĂDĂTESCU
THE METHOD OF PROCESSING THE EXTERNAL SURFACES BY SUPERFINISHING
» Abstract. The paper presents a
method and a constructive solution for processing rod-type work-pieces
with different lengths and diameters by superfinishing with abrasive
stones, on a four-working-units machine. With this constructive solution
is possible the achievement of a high quality for the external cylindrical
surfaces especially for the work-pieces with great length and small
diameter.
» Keywords: productivity, flexibility,
quality, superfinishing
Ion TUREAC, Romeo CIOARĂ, Maria POPESCU, Anca FORIŞ, Cătălin GHEORGHE, Răzvan DOBREA
DEMATERIALIZATION OF THE PRODUCTS – RESOURCE OF DURABLE UTILIZATION
IN THE MACHINERY BUILDING
» Abstract. Some aspects regarding
ecological design of the products are presented in this paper.
Particularly, are evidenced some possibilities for reduction consumptions
of metals in the machinery building using the information like resource.
There are count some possibilities for reduction metal consumption in the
field building machine-tools and are proposals two criterions for
economizes estimation. The design in the durable utilization principle is
an important resource for obtains ecological products and there fore it is
recommended for the designers.
» Keywords: ecological design, durable
metals utilization, sustainable industrial development process
STUDY CONCERNING THE "5S" OF THE MAINTENANCE IN THE ROMANIAN FIRMS
» Abstract. The property and the clean
look of the enterprise, describe by the "5S" (SEITON/arranging, SEIRI/order,
method, SEISSO/inspection, control, SEIKETSU/property, SHITSUKE/discipline,
respect) is the most amazing result of the Total Productive Maintenance (TPM).
This study has as objective the identification of the Romanian firms'
position towards the acceptance of the rigors imposed by this concept. An
original audit methodology pointed out the 5S enterprises development
level, showing that only a part of the principles is respected so far. The
research proved the existence of the same tendencies in almost
all-Romanian firms.
» Keywords: Total Productive
Maintenance (TPM), 5S, SEITON, SEIRI, SEISSO, SEIKETSU, SHITSUKE, 5S audit
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