Ing. Vladimír Krutiš, Ph.D.
E-mail:   krutis@fme.vutbr.cz  Dept.:   Institute of Manufacturing Technology Dept. of Foundry Engineering Position:   Assistant Professor Room:   A1/1719

Supervised courses:

• Additive Technologies in Foundries (PTS)
• Mathematical Modelling (PMM)
• Technological Preparation of Foundry Production (PTC)
• Technological Preparation of Foundry Production (PTC-K)

Publications:

• KOVÁČ, M.; KRUTIŠ, V.:
  Numerical Simulation of Steel Ingot,
  51. International Foundry Portoroz 2011, pp.48-57, ISBN 978-961-90130-6-9, (2011), Druzstvo Livarjev Slovenije
  conference paper
  akce: 19th conference on materials and technology, Portorož, 22.11.2011-23.11.2011
• ŠENBERGER, J.; ZÁDĚRA, A.; KRUTIŠ, V.; KOVÁČ, M.; CARBOL, Z.; PLUHÁČEK, J.:
  Podmínky tuhnutí těžkých odlitků a jejich vliv na vlastnosti odlitků,
  Slévárenství, Vol.58, (2010), No.5-6, pp.136-140, ISSN 0037-6825, Svaz sléváren ČR
  journal article - other
• ROUČKA, J.; KRUTIŠ, V.; HRBÁČEK, K.:
  Vyhodnocení struktury odlitků připravených metodou vytavitelného modelu s využitím numerické simulace,
  METAL 2010, pp.84-88, ISBN 978-80-87294-15-4, (2010), TANGER
  conference paper
  akce: Metal 2010 19. Mezinárodní konference metalurgie a materiálů, Rožnov pod Radhočtěm, 18.05.2010-20.05.2010
• KRUTIŠ, V.; KOVÁČ, M.:
  Livarske rešitve skupine ESI - numerične simulacije kot orodoje za komuniciranje,
  Livarski vestnik, Vol.56, (2009), No.4, pp.188-195, ISSN 0024-5135
  journal article - other
• ZEMČÍK, L.; ŠUPÁLEK, M.; KRUTIŠ, V.; DLOUHÝ, A.:
  Přesné lití turbínových kol turbodmychadel ze slitin TiAl,
  Slévárenství, Vol.LVII, (2009), No.11-12, pp.407-410, ISSN 0037-6825, Svaz sléváren ČR
  journal article - other
• KRUTIŠ, V.; KUZMA, Z.:
  Numerická simulace ve slévárenské technologii,
  MM Průmyslové spektrum, Vol.2009, (2009), No.10, pp.42-43, ISSN 1212-2572
  journal article - other
• ZÁDĚRA, A.; KRUTIŠ, V.; ŠENBERGER, J.; KOVÁČ, M.; KOLDA, V.:
  Experimentální ověření modelu reoxidace,
  Transaction of the VŠB-Technical university of Ostrava, Mechanical series, Vol.52, (2009), No.2, pp.355-362, ISSN 1210-0471, Vysoká škola báňská - TU Ostrava
  journal article - other

List of publications at Portal BUT

Abstracts of most important papers:

• ROUČKA, J.; KOSOUR, V.; KOVÁČ, M.; KRUTIŠ, V.; HRBÁČEK, K.:
  Prediction of Solidification and Microstructure of Inconel Alloy Using Numerical Simulation,
  IOP Conference Series: Materials Science and Engineering, Vol.33, (2012), No.1, pp.320-327, ISSN 1757-8981, IOP Publishing
  journal article - other
  akce: International Conference on Modelling of Casting and Advanced Solidification Processes, Schladming, 17.06.2012-22.06.2012
  Test castings of Inconel 713LC were prepared by pouring into shell molds in vacuum furnace. The temperature was experimentally measured in the course of solidification and cooling, and the structure was evaluated in as-cast condition. Applying thermal insulation of shells, the dependence of the structure of castings on cooling rate was monitored on test castings. The solidification pattern was solved numerically, using the ProCAST simulation program.
• KOVÁČ, M.; KRUTIŠ, V.:
  Numerical Simulation of Steel Ingot,
  51. International Foundry Portoroz 2011, pp.48-57, ISBN 978-961-90130-6-9, (2011), Druzstvo Livarjev Slovenije
  conference paper
  akce: 19th conference on materials and technology, Portorož, 22.11.2011-23.11.2011
  During pouring and solidification process of steel in metal die can be created many different defects of ingots. This paper concentrates on the very common but important one, porosity. Porosity appearance depends on chemistry of poured steel, its solidification range, pouring temperature, H/D ingot ratio, shape of metal die, thickness of the die walls and some other effects. In cooperation with Vitkovice HM we are trying to find out and describe importance of some of these influences. It helps with understanding of the solidification process and optimization of new dies for Vitkovice HM. The new dies should have positive influence on solidification paths of metal and minimize amount of porosity. Software Procast was used as a tool of virtual process simulation. Results from filling of the die cavity, solidification of metal, stress analyses and mechanical properties prediction are described in the paper. Simulation may be used for optimization of ingot head and better utilization of poured metal. Thus it leads to more economical production with better quality of ingot.
• ZEMČÍK, L.; ŠUPÁLEK, M.; KRUTIŠ, V.; DLOUHÝ, A.:
  Přesné lití turbínových kol turbodmychadel ze slitin TiAl,
  Slévárenství, Vol.LVII, (2009), No.11-12, pp.407-410, ISSN 0037-6825, Svaz sléváren ČR
  journal article - other
  While the castings of small diameters were cast with no problems, the castings of greater diameters (above 150 mm) started to show extensive shrinkage depressions on the riser-casting transition. With the aid of the simulation ProCAST programme a method of reduction of heat losses from the riser surface has been designed and experimentally checked. It has succeeded to shift the shrinkage depressions upwards into the riser and in such a way to obtain a sound turbine wheel casting.
• KRUTIŠ, V., ROUČKA, J., KUZMA, Z.:
  Numerické modelování tepelných procesů soustavy nálitek-exoobklad-forma,
  TECHNOLÓGIA 2003, pp.57-60, ISBN 80-227-1935-8, (2003), Strojnická fakulta STU v Bratislavě
  conference paper
  akce: TECHNOLÓGIA 2003, Bratislava, 09.09.2003-10.09.2003
  Casting process simulation software is becoming widely used in our foundries. About benefits of this technology have been written already a lot of papers. The simulation software can be used with the success for riser optimalization. Nowadays the technology using the exothermic sleeves can be considered in numerical simulation. However, in order to produce reliably accurate feeding process and porosity prediction, accurate thermal data have to be used. The software databases with thermal data of exothermic feeders are generally poor or are missing completely. The further question is to set up correct definition of the exothermic effect. A lot of simplifications have to be still used in simulation software. The article is focused on analysis of the possibilities to define exothermic sleeves in numerical simulation. Further more the experimental measuring of some thermal data is presented.
• KRUTIŠ, V.; ROUČKA, J.:
  Modelování proudění kovů keramickými filtry,
  Zeszyty naukowe politechniki Opolskiej seria Mechanika, Vol.72, (2001), No.279/2001, pp.171-174, ISSN 1429-6055, Politechnika Opolska
  journal article - other
  akce: Struktura a vlastnosti konstrukčních materiálů, Komorní lhotka, 11.11.2001-13.11.2001
  During ceramic foam filling simulation is used a lot of simplifications regarding the definition of initial and boundary condition. The filter geometry is simplified and is used like a box where the hydraulic resistance is defined on the box surfaces. This simplification is used because of calculation time for ceramic filters and because of complicated geometry of foam ceramic filter. Paper is focused on the possibilities of the simulation of ceramic foam filter in NovaCast sw.