SVIBOR - Project code: 2-08-182

MINISTRY OF SCIENCE AND TECHNOLOGY

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tel.: +385 1 459 44 44, fax: +385 1 459 44 69
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Project code: 2-08-182


Optimisation of integrated production of parts


Main researcher: ČATIĆ, IGOR (7792)


Assistants
Type of research: basic
Duration from: 05/22/91. to 12/31/94.
Papers on project (total): 644
Papers on project quoted in Current Contents: 3
Institution name: Fakultet strojarsva i brodogradnje, Zagreb (120)
Department/Institute: Department of Technology
Address: Ivana Lučića 5, Zagreb
City: 41000 - Zagreb, Croatia
Communication
Phone: 385 (01) 61 11 944
Fax: 385 (01) 51 45 35
Summary: The main aim of the project "Optimisation of integrated production of parts" is profounding of existing knowledge about technological procedures and processes as well as technological parts necessary during improving of production of optimal part which in total satisfy on macro-physical and micro-physical level. This aim can be in modern production of parts reached on several levels. Constantly rises the importance of product development from standpoint of examination of the product on technical, economical and social criterions and application of numerical methods. Similar demands are given during checking of the production of necessary production systems. The parts are now produced by reactive and non-reactive primary shaping, secondary shaping, machining, joining, coating and part structuring. Systemic analysis of matter, energy and information flows enables better understanding and description of technical processes and systems. Product quality must be built in the part (quality assurance and control). Automated and flexible assembly constantly gains the importance. Integrated production demands also thinking of human factor within the production as well as connection of production technology with the transport, storage, material, energy and information technologies on the factory level. This project, that is a combination of bibliographic research, theoretical thinking, modelling, experimental testing and necessary data handling with computer, serves to that ideas.

Keywords: autonomus working groups, casting, expert systems, heat treatment, integration, machining, modification of surface properties, optimisation, procedures and processes, production and development of polymeric parts, production technology, products, secondary shaping

Research goals: The start point in the definition of the research aim is statement: Production must run, economically justified in the function of satisfying the social needs. Thus, the basic material aim of each society is the production of things as the highest achievement of total material and intelligent efforts of all scientists which achievements synthesise producers of things in the result of human will and knowledge, thing with defined macrogeometrical form and prescribed properties. Under modern conditions, this aim can be achieved starting from some basic directions. Systemic approach makes possible the analysis of manifestations and better understanding of technical procedures and technical products by study of material energy and information flows. Particulary important is the information input into technical procedures that represent the shape and volume-surface ratio of part. Based on our own results, the systemic analysis of polymeric parts development will continue on two main points. These are: mechanical modelling of non-linear behaviour of rubber parts and directions of assessment of technology during the part development. This assessment of technology fits into the basic concept of investigation: the production of parts demands totality and intersection of technics, economy and society. This demands the testing of technologiability of the part and necessary production systems. During the production of things, reactive primary shaping continuously gets the importance. Starting from our own conceptions, the emphasis of research will be on the cyclic reactive primary shaping of polymeric products with aim to find out the connection and interactivity between the shape and volume-surface ratio of the part, technical procedures and processes and means of action as well as their influence on part properties during its use. In this case, the means of action is the mould as batch reactor. During primary shaping of metals by casting, the emphasis is on finding out the connection between technological variables and part properties with aim to classify the faults and modelling as well as informatical aid during establishment of the connection between sources and faults. On the field of metal deformation working the main points of interest are: analytical establishment of influences of singular parameters on deformability in hot and cold state, development of approximate methods for simulation of plastic flow in closeddies, and computer aided design and manufacturing of closed die. During contact rolling of thin foils the aim is modelling of adoptive optimisation for better process control as the base for automatisation and integration. One of the aims is also the numerical simulation of procedures of secondary shaping of metal with the aid of computer, including elastic, viscoelastic, plastic and viscoplastic behaviour. During the study of machining procedures the aims are: development of design systems for assembly of machining systems with corresponding modelling, optimisation and development of software, establishing of database for automatic definition of technological parameters of the processes as well as creation of mathematical model for machining systems and processes, necessary during adaptive control, simulation of machining of processes and systems and creation of expert systems. Expected contribution is in optimisation of parameters during manufacturing of working machines, shortening of time during projecting of parts and procedures and optimised parts and processes. The optimisation of characteristics of metal parts is possible also by modification of part's surface by coating. The aim of this research is to establish profounded knowledge of interactive relations between single procedures of coating and the functionality, durability and aesthetics of part as a contribution to optimal and integrated production. The source of great economical losses is the friction and wear of products. The procedures of heat coating of metal part surfaces and diffusion procedures for change of the composition, properties and structure of surface layers drastically can reduce the wear of different tools. The aim is profounded knowledge of procedures and their optimisation. Integrated production of parts includes also the assembly. Due to smaller series the assembly system must be flexible and highly automated. The aim is the creation of system for projecting of flexible automated assembly as a fundamental element of integrated production with the purpose of "just in time" quality assured automatic assembly. The planned system must assure the complex approach to planning by integration of all activities from planning and construction of product to design of systems for assembling of individual parts in complicate and complex assembly. In the concept of integrated production of parts the human factor is also very important. The organisation measures directed toward human factor makes possible significant improvement with low investment costs. The autonomous working groups and quality circles will be investigated. The aim of research is discharge of higher levels of hierarchy and delegation of competence and decision to lower levels, and faster flow of information. The lower hierarchy level is the sign of closed and defined production systems. Based on the description of single aims, the main aim of project can be defined. This is the contribution to the optimisation of integrated production of parts (IPP). Under IPP we are understanding the integration of material, energy and information flows during the production of things with defined macro geometrical shape and prescribed properties. This integration understands the unity of empirical and scientific conceptions and it manifests on two levels. The process control as the base for production of correct part as output an macro- and micro-physical level and integration of all information flows on the producer level. This integration includes product testing on the market but also the fabrication of necessary production systems for the production of parts.

COOPERATION - PROJECTS


  1. Name of project: 2-02-043 Studija utjecaja mehanizma procesa na posebna svojstva čeličnih cijevi
    Name of institution: Metalurški fakultet Sisak
    City: 44000 - Sisak, Croatia

  2. Name of project: Moderne tehnologije za plastičnu preradu i njihovo matematičko modeliranje
    Name of institution: Bergakademie Freiberg, Njemačka
    City: Freiberg, Deutschland

  3. Name of project: Nove tehnologije, novi materijali, zaštita okoliša i energetika u metalurgiji
    Name of institution: Tehničko Sveučilište Košice, Slovakia
    City: Košice, Slovačka

  4. Name of project: Ekspertni sustavi u metalurgiji
    Name of institution: Dnjepropetrovski Metalurški Institut Ukrajina
    City: Dnjepropetrovsk, Ukraina

  5. Name of project: Istraživanje svojstava materijala
    Name of institution: Institut za metalne materijale i tehnologije
    City: 61000 - Ljubljana, Slovenija

  6. Name of project: 1-07-171 Studij separacije i analize te strukture i svojstava materije
    Name of institution: Metalurški fakultet, Sisak
    City: 44000 - Sisak, Croatia

COOPERATION - INSTITUTIONS


  1. Name of institution: Institut fuer Kunstoffverarbeitung
    Type of institution: University/Faculty
    Type of cooperation: Systematic exchange of information
    City: Aachen, Njemačka

  2. Name of institution: Tehničko Sveučilište - Bergakademie Freiberg
    Type of institution: Economical/Production
    City: Freiberg, Deutschland

  3. Name of institution: Tehničko Sveučilište Košice
    Type of institution: Economical/Production
    City: Košice, Slovačka

  4. Name of institution: Dnjepropetrovski Metalurški Institut
    Type of institution: University/Faculty
    City: Dnjepropetrovsk, Ukraina

  5. Name of institution: Institut za metalne materijale i tehnologije
    Type of institution: University/Faculty
    City: 61000 - Ljubljana, Slovenija

  6. Name of institution: IRI d.o.o. "Holding Željezara Sisak"
    Type of institution: Non-profit
    City: 44000 - Sisak, Croatia

  7. Name of institution: FELIS d.o.o. "Holding Željezara Sisak"
    Type of institution: State institute
    City: 44000 - Sisak, Croatia

OTHER ACHIEVEMENTS


  1. Name: Položen ispit na Eurolaser Academy Wien
    Type of achievement: Other
    Authors: B. Matijević

  2. Name: Proračun sila i momenata valjanja, interno izdanje FSB, Zagreb, 1994
    Type of achievement: Teaching aids and educatio
    Authors: Povrzanović Aleksandar

  3. Name: Temelji analize naprezanja elemenata volumena (Slab metoda),interno izdanje, FSB, Zagreb, 1995
    Type of achievement: Teaching aids and educatio
    Authors: Povrzanović Aleksandar
Other information about the project.
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