| Course Unit Code | 618-3005/03 |
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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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| BRO37 | doc. Ing. Silvie Brožová, Ph.D. |
| SAW002 | prof. Ing. Markéta Tkadlečková, Ph.D. |
| Summary |
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| The subject is focused on theoretical principles of the processes occurring in the refining of molten steel in the ladle refining the essence of technology and equipment ladle metallurgy, as well as steel refining technology inert gases, vacuum refining of steel, steel refining synthetic slag and stainless steel production. |
| Learning Outcomes of the Course Unit |
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To give students the ability to define processes occurring in the refining of liquid steel, as well as the ability to be able to explain the essence of refining steel in the ladle and formulate options to use each variant secondary metallurgy.
Acquired knowledge:
- student will be able to define processes during the refining of liquid steel
- student will be able to explain the theoretical basis of the process of refining steel in a ladle
- student will be able to formulate the possibility of using the various options of secondary metallurgy
Acquired skills:
- student will be able to use own knowledge to determine the appropriateness of metallurgical processes of refining steel in a ladle
- student will be able to apply own theoretical knowledge to draft modifications in technology and metallurgy of steel refining
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| Course Contents |
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1. Causes of the secondary metallurgy methods development.
2. Main procedures of secondary metallurgy processing and their effects.
3. The elements that accompany the production and refining of steel.
4. Gases in steel – thermodynamics, kinetics and mechanism of H2 and N2 dissolution.
5. Thermodynamics and mechanism of steel degassing.
6. Dissolution of oxygen in steel – thermodynamics and mechanism.
7. Terms of inclusions flotation by inert gas – their absorption by slag.
8. Steel refining by inert gases – effects – methods of realisation.
9. Vacuum steel refining – nucleation of gas bubbles – diffusion of gas atoms to the surface.
10. Technology of vacuum secondary metallurgy including equipment.
11. Terms of stainless steel production – thermodynamics of deep decarburization of steel with high chromium content – technology of stainless steel production.
12. Steel refining by synthetic slags – thermodynamic conditions of refining – the mechanism and kinetics of refining – the technology of refining by molten or solid synthetic slag – used slags – characteristics.
13. Ladle furnace – the importance of the secondary metallurgy – types of ladle furnaces – their options.
14. Inputting cored and Al wires into the steel – the importance and technology. |
| Recommended or Required Reading |
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| Required Reading: |
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[1]GHOSH, A.: Secondary Steelmaking - Principles and Applications. New York, 2001, 322 p.
[2]STOLTE, G.: Secondary Metallurgy - Fundamentals Processes Applications. Düsseldorf, 2002, 216 p
[3] ADOLF, Z., SOCHA, L.: Secondary Metallurgy. Lecture Notes. VSB-Technical University of Ostrava, 2016, 61 p. |
[1]ADOLF, Z.: Sekundární metalurgie. Studijní opora k předmětu.VŠB-TU Ostrava, 2013.
[2]ADOLF, Z.: Mimopecní rafinace oceli, VŠB-TU Ostrava, 1991, 133 s.
[3]GHOSH, A.: Secondary Steelmaking - Principles and Applications. New York, 2001, 322 p.
[4]STOLTE, G.: Secondary Metallurgy - Fundamentals Processes Applications. Düsseldorf, 2002, 216 p.
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| Recommended Reading: |
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[1] FRUEHAN, R. J.: The Making, Shaping and Treating of Steel. Steelmaking and refining Volume. Chapter 10: EAF. Chapter 12: Refining of Stainless Steel. AISE Steel Foundation, 1998, 767 p.
[2] Papers in journals and conference proceedings.
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[1] Kepka, M.: Rafinace oceli, SNTL, Praha, 1989, 210 s.
[2] Články v odborném tisku, příspěvky na konferencích, výzkumné zprávy. |
| 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 | 21 |
| Examination | Examination | 70 | 30 |