618-3005/01 – Secondary Metallurgy (SekMet)
| Gurantor department | Department of Metallurgy and Foundry | Credits | 6 |
| Subject guarantor | prof. Ing. Karel Michalek, CSc. | Subject version guarantor | prof. Ing. Karel Michalek, CSc. |
| Study level | undergraduate or graduate | Requirement | Choice-compulsory |
| Year | 2 | Semester | winter |
| | Study language | Czech |
| Year of introduction | 2014/2015 | Year of cancellation | 2021/2022 |
| Intended for the faculties | FMT | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
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
Teaching methods
Lectures
Individual consultations
Tutorials
Summary
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.
Compulsory literature:
[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.
Recommended literature:
[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.
Additional study materials
Way of continuous check of knowledge in the course of semester
E-learning
Other requirements
preparing any seminar works and passing written tests
elaboration of semester project on a given topic: - Theory and technology of refining steel in ladle furnaces and ladle
- The project will be monitored by the teacher within 14 days of the submission and the results will be sent to students via email
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
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.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction