| Course Unit Code | 618-3025/03 |
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| Number of ECTS Credits Allocated | 7 ECTS credits |
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| Type of Course Unit * | Compulsory |
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| Level of Course Unit * | Second Cycle |
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| Year of Study * | Second Year |
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| Semester when the Course Unit is delivered | Winter Semester |
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| Mode of Delivery | Face-to-face |
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| Language of Instruction | Czech |
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| Prerequisites and Co-Requisites | Course succeeds to compulsory courses of previous semester |
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| Name of Lecturer(s) | Personal ID | Name |
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| HAM33 | doc. Ing. Jiří Hampl, Ph.D. |
| VAL184 | Ing. Tomáš Válek, Ph.D. |
| Summary |
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| The subject focuses on theoretical and practical aspects connected with the of steelmaking for castings in electric arc and induction furnaces. Ways and possibilities of steel processing in the area of secondary metalurgy currently used in steel foundries are also presented. The subject also deals with the determination of causes of occurence of individual kinds of defects of steel castings. |
| Learning Outcomes of the Course Unit |
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Acquired knowledge:
- the student will be able to characterize the technology of steel making for castings in electric arc furnaces and induction medium frequency furnaces
- the student will be able to explain the concept of processing of steel for castings in the sphere of secondary metallurgy and the basic causes of the origin of individual kinds of foundry defects.
Acquired skills:
- the student will be able to use their knowledge to determine the appropriateness of technological and metallurgical processes in the production of steel castings,
- the student will be able to apply their theoretical knowledge to proposed modifications to the technology of steel castings in the foundry practice.
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| Course Contents |
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1. Introduction to history of ironmaking up to the present. Basic parameters of electric arc furnaces and electric induction furnaces.
2. The fundamentals of thermodynamics of steelmaking processes. Solutions of molten metals, non-metals and gases.
3. Norms and assortment of steels for castings. Structural steels for castings. Special steels for corrosion-resistent castings. Special steels for abrasion-resistent castings.
4. Construction and thermal mode of operation of an electric arc furnace (EAF). Linings of electric arc furnaces. The development of EAF technology.
5. Production of unalloyed steels for castings in basic electric arc furnaces. The process of individual technological-metallurgical phases. Practice of melt control.
6. Technology of production of alloyed steels for castings in alkaline electric arc furnaces. Function of main thermodynamic conditions of metallurgical processes.
7. Intensification of production of steel in EAF. Contemporary development trends in steel making in EAF.
8. Production of steel in acidic EAF. The advantages of acidic EAF compared to alkaline EAF.
9. Construction and thermal mode of operation in electric induction medium frequency furnace (EIF). Stamping refractory materials of EIF. Practice of melt control.
10. Technology of production of unalloyed and alloyed steels in EIF.
11. Deoxidation of steel in a furnace ladle and casting. Final deoxidation of steel in a ladle and its effect on steel properties.
12. Possibilities of secondary metallurgy in steel foundries. Using individual methods and principles of individual processes of secondary metallurgy.
13. Defects of steel castings. Causes of the origin of individual kinds of defects and possibilities of removing them.
14. Some possibilities of using cost analysis to control production. A method of variance calculation and incomplete real actual costs. Using costs to control production.
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| Recommended or Required Reading |
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| Required Reading: |
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[1]FRUEHAN,R. et al., The Making, Shaping and Treating of Steel. Pittsburgh: 1998, ISBN 0-930767-02-0.
[2]SINHA, A,K. Physical Metallurgy Handbook. New York: McGraw-Hill, 2003. ISBN 0-07-057986-5
[3]STEFANESCU, D.M. Science and Engineering of Casting Solidification. Alabama: Springer Intrnational Pubishing Switzerland, 2015. ISBN 978-3-319-15692-7, ISBN 978-3-319-15693-4 (eBook).
[4]FRUEHAN, R. Casting volume: Ladle operations. Pittsburgh: 11. ed. Pittsburgh, Pa: AISE Steel Foundation, 2003. ISBN 0-930767-04-7.
[5]CAMPBELL, J. Castings practice: the 10 rules of castings. Oxford: Elsevier Butterworth-Heinemann, 2007, 205 p. ISBN 07-506-4791-4.
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[1]ČAMEK, Libor. Slévárenství ocelových odlitků. Studijní opora k předmětu.
[2]ŠENBERGER, Jaroslav, Karel STRÁNSKÝ, Zdeněk BŮŽEK, Antonín Záděra a Václav KAFKA. Brno: Metalurgie, VUTIUM, VUT Brno, 2008. ISBN 978-80-214-3632-9.
[3]]LEVÍČEK, P., STRÁNSKÝ, K. Metalurgické vady ocelových odlitků. Praha: SNTL, 1984, 269 s.
[4]KALOUSEK, J., DOBROVSKÝ, L´.Teorie hutnických pochodů.Ostrava:skriptum VŠB-TU Ostrava, 2004.
[5]FREMUNT, P., ŠIMON, J. Tavení oceli v elektrických pecích.Praha:SNTL,1984. 242 s.
[6]CAMPBELL, J. Castings. Oxford: Butterworth-Heinemann, 2000. ISBN 0-7506-4790-6.
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| Recommended Reading: |
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[1]ALLIBERT, M., GAYE, H., GEISELER J. et. al. Slag atlas. Düsseldorf: 1995. ISBN 3-514-00457-9.
[2]FRUEHAN, R. et al. The Making, Shaping and Treating of Steel. Pittsburgh: 1998. p.767, ISBN 0-930767-02-0.
[3]STEFANESCU, D.M. Science and Engineering of Casting Solidification. Alabama: Intrnational Pubishing Switzerland, 2015. ISBN 978-3-319-15692-7, ISBN 978-3-319-15693-4 (eBook).
[4]CAMPBELL, J. Castings practice: the 10 rules of castings. Oxford: Elsevier Butterworth-Heinemann, 2007, 205 p. ISBN 07-506-4791-4. |
[1]ELBEL, Tomáš, František HAVLÍČEK, Petr JELÍNEK, Petr LEVÍČEK, Jan Rous a Karel STRÁNSKÝ. Vady odlitků ze slitin železa (klasifikace, příčiny a prevence). Brno: MATECS, Brno, 1992.
[2]ELBEL,T., HAVLÍČEK,F.:Hospodárné konstruování odlitků. Slévárenství, roč. LV, 2007, č. 4, s. 149-155.
[3]BENDA, M. Elektrometalurgie. Ostrava: Skriptum, 250s, VŠB-TU Ostrava, 1989.
[4]KEPKA, M. Rafinace oceli. Praha: SNTL Praha, 1989. 211 s. |
| Planned learning activities and teaching methods |
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| Lectures, Individual consultations, Tutorials |
| Assesment methods and criteria |
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| Task Title | Task Type | Maximum Number of Points
(Act. for Subtasks) | Minimum Number of Points for Task Passing |
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| Credit and Examination | Credit and Examination | 100 (100) | 51 |
| Credit | Credit | 30 | 15 |
| Examination | Examination | 70 | 21 |