618-3005/01 – Secondary Metallurgy (SekMet)

Gurantor departmentDepartment of Metallurgy and FoundryCredits6
Subject guarantorprof. Ing. Karel Michalek, CSc.Subject version guarantorprof. Ing. Karel Michalek, CSc.
Study levelundergraduate or graduateRequirementChoice-compulsory
Year2Semesterwinter
Study languageCzech
Year of introduction2014/2015Year of cancellation
Intended for the facultiesFMTIntended for study typesFollow-up Master
Instruction secured by
LoginNameTuitorTeacher giving lectures
MIH50 prof. Ing. Karel Michalek, CSc.
STR580 Ing. Michaela Strouhalová, Ph.D.
WAL0017 Ing. Josef Walek
ZWY0008 Ing. Jaroslav Zwyrtek
Extent of instruction for forms of study
Form of studyWay of compl.Extent
Full-time Credit and Examination 3+2
Combined Credit and Examination 16+0

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.

Way of continuous check of knowledge in the course of semester

E-learning

Další požadavky na studenta

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

Combined form (validity from: 2014/2015 Winter semester)
Task nameType of taskMax. number of points
(act. for subtasks)
Min. number of points
Exercises evaluation and Examination Credit and Examination 100 (100) 51
        Exercises evaluation Credit 30  15
        Examination Examination 70  21
Mandatory attendence parzicipation:

Show history

Occurrence in study plans

Academic yearProgrammeField of studySpec.FormStudy language Tut. centreYearWSType of duty
2019/2020 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies K Czech Ostrava 2 Choice-compulsory study plan
2019/2020 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies P Czech Ostrava 2 Choice-compulsory study plan
2018/2019 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies P Czech Ostrava 2 Choice-compulsory study plan
2018/2019 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies K Czech Ostrava 2 Choice-compulsory study plan
2017/2018 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies P Czech Ostrava 2 Choice-compulsory study plan
2017/2018 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies K Czech Ostrava 2 Choice-compulsory study plan
2016/2017 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies P Czech Ostrava 2 Choice-compulsory study plan
2016/2017 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies K Czech Ostrava 2 Choice-compulsory study plan
2015/2016 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies P Czech Ostrava 2 Choice-compulsory study plan
2015/2016 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies K Czech Ostrava 2 Choice-compulsory study plan
2014/2015 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies P Czech Ostrava 2 Choice-compulsory study plan
2014/2015 (N2109) Metallurgical Engineering (2109T038) Modern Metallurgical Technologies K Czech Ostrava 2 Choice-compulsory study plan

Occurrence in special blocks

Block nameAcademic yearForm of studyStudy language YearWSType of blockBlock owner