Faculty of Mechanical Engineering and Naval Architecture, Chair of Heat Treatment and Surface Engineering

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Main research field

Heat treatment of metals; Surface modification and coating; Surface engineering; Materials science

Specific research areas

Nitriding and nitrocarburizing in the gas atmosphere, Salth bath or plasma, Carburizing in solid media and gas atmosphere, Hardening in vacuum furnaces in high pressure gases, Testing hardenability of steels, Characterisation of quenching media for heat treatment, Development of quenchant media with addition of nanoparticles, Mathematical modeling of diffusion processes, Mathematical modeling of phase transformations in metal alloys

Techniques/methods

  • characterisation of cooling curves due to norm ISO 9950; dilatometric analysis up to 600 deg.C ; steel hardenability testing; numerical computing
  • of the gas carburization process; numerical computing of phase transformations in metal alloys; simulations of induction heating by eddy currents;

Equipment

vacuum furnace Ipsen VFC25; nitrocarburizing salth bath TENIFER; salth bath for isothermal heat treatment; high frequency induction hardenig work cell; dilatometer; hardnes testers due to Vickers method (HV0.5, HV1, HV5) and Rockwell C method; Comsol Multiphysics software; own developed program for prediction of carbon distribution in surface layer after carburizing process

Certificates

No, but it is planned:

Technology keywords

  • Coatings
  • Hardening, heat treatment
  • Surface treatment (painting, galvano, polishing, CVD, PVD)
  • Simulation, Simulation Engineering
  • Iron and Steel, Steelworks
  • Non-ferrous Metals

Services offered

  • Material characterisation (testings, measurements, various quantitative and / or qualitative analyses)
  • Use of specialized equipment
  • Quality control
  • Teaching and training
  • Technique / method optimization and testing

Market sectors

  • Aerospace & Defense
  • Electronic & Electrical Equipment
  • Industrial Engineering
  • Industrial Transportation
  • Automobiles & Parts
  • Personal Goods

Short summary (English)

Chair of heat treatment and surface engineering deals with teaching, research and professional activities related to heat treatment of metals in the fields of mechanical engineering and materials. Heat treatment processes include processing the entire volume (eg, tempering, annealing, aging, etc.) as well as surfaces modification and coating. These procedures, the properties of the surface layers and their applications are investigated and developed in the framework of modern scientific technical discipline known as surface engineering. Chair of heat treatment and surface engineering for more than four decades of dealing with the adoption of knowledge and gathering knowledge about the processes of heat treatment and surface engineering, and a wide range of opportunities that they provide. Chair employees have been involved in this gathering of knowledge in their everyday scientific and educational activities. Also these activities involved students through the development of their seminar, graduate, master's and doctoral theses. The Chair particularly well adopted the knowledge of traditional heat treatment processes. We can say that for us there is no question unanswered, and in most cases, neither the workpiece which we provide (in our laboratory) required properties. Precisely procedures such as annealing, hardening and tempering in the protective atmosphere heat treatment in a vacuum, induction hardening, nitrocarburizing or vanadizing in the salt bath, gas nitriding or nitrocarburizing, case hardening and boronizing, ensure a strong and highly successful collaboration with the business sector in the past decades. Heat treatment laboratory that works at the Chair has the equipment for heat treatment in a vacuum, equipment for thermochemical processes - cementing in solid media, gas nitriding or nitrocarburizing; equipment for the induction hardening and tempering and equipment for the procedures in warm bath – austempering and martempering process. Laboratory addresses the specific technological processes for the business sector, and has developed a consulting activity in the introduction and implementation of new procedures of heat treatment and surface engineering and the development of domestic production of equipment for heat treatment. Significant work of Chair employees have been focused on developing of own computer assisted methods for testing the intensity of cooling quench media and developing a computer model for prediction of carburizing curve in case hardening of steels. The future development of the teaching activities of the Chair is directed to the improvement of teaching and transfer of new knowledge to students of the parent faculty and experts from the industry. The future development of scientific activity of the Chair is directed to applied research of new surface layers and their implementation in the industry. In achieving these objectives, we are open to cooperation with industry and actively participate in scientific research projects, innovative projects as well as in projects for lifelong learning.

Short summary (Croatian)

Katedra za toplinsku obradu i inženjerstvo površina bavi se nastavnom, znanstvenom i stručnom djelatnošću vezanom za toplinsku obradbu metala u znanstvenim poljima strojarstvo i materijali. Postupci toplinske obradbe obuhvaćaju postupke obrade cijelog volumena (npr. kaljenja, žarenja, starenja i sl.) i postupke modificiranja i prevlačenja površina. Navedeni postupci, svojstva površinskih slojeva i njihova primjena istražuju se i razvijaju u okviru suvremene znanstveno tehničke discipline poznate kao inženjerstvo površina. Katedra za toplinsku obradu i inženjerstvo površina već se više od četiri desetljeća bavi usvajanjem znanja i prikupljanjem spoznaja o procesima toplinske obrade i inženjerstva površina te širokom spektru mogućnosti koje oni pružaju. U okviru znanstvene i nastavne aktivnosti u tome sudjeluju zaposlenici Katedre te studenti kroz izradu svojih seminarskih, diplomskih, magistarskih i doktorskih radova. Posebno su dobro usvojena znanja o tradicionalnim postupcima toplinske obrade. Možemo konstatirati da za nas ne postoji pitanje bez odgovora, a u najvećem broju slučajeva, niti obradak kojemu ne bismo osigurali (u našem laboratoriju) tražena svojstva. Upravo su postupci poput: žarenja, kaljenja i popuštanja u zaštitnoj atmosferi, toplinske obrade u vakuumu, indukcijskog kaljenja, nitrokarburiranja ili vanadiranja u solnim kupkama, nitriranja ili nitrokarburiranja u plinu, cementiranja te boriranja, osigurali snažnu i vrlo uspješnu suradnju s gospodarskim sektorom u proteklim desetljećima. Laboratorij toplinsku obradu koji djeluje na Katedri raspolaže s opremom za toplinsku obradbu u vakuumu, termokemijske postupke – cementiranje u granulatu i u plinskoj atmosferi, nitriranje u solnoj kupci i plinu, boriranje, vanadiranje i dr. opremom za indukcijsko kaljenje i opremom za postupke kaljenja u toploj kupki - martempering i izotermičkog poboljšavanja - austempering. Laboratorij rješava konkretne tehnološke postupke za gospodarstvo te ima razvijenu konzultantsku djelatnost u uvođenju i primjeni novih postupaka toplinske obradbe i inženjerstva površina te u razvoju proizvodnje domaće opreme za toplinsku obradu. Značajni su radovi na razvoju vlastite računalom potpomognute metode za ispitivanje intenzivnosti ohlađivanja pri kaljenju i računalnog modela izračunavanja krivulje pougljičavanja. Budući razvoj nastavne djelatnosti Katedre usmjeren je k unaprjeđenju nastave i prijenosu novih znanja studentima matičnog fakulteta i stručnjacima iz gospodarstva. Budući razvoj znanstvene djelatnosti Katedre usmjeren je k primijenjenim istraživanjima novih površinskih slojeva i njihovoj implementaciji u industriji. U ostvarenju ovih ciljeva otvoreni smo za suradnju s gospodarstvom i aktivno učešće u znanstveno istraživačkim projektima, inovacijskim projektima kao i projektima cjeloživotnog učenja.

Last update: 24.11.2014. 15:38:53

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