618-0412/01 – Fundamentals of Steelmaking Technology and Steel Processing (ZTVyZO)
| Gurantor department | Department of Metallurgy and Foundry | Credits | 4 |
| Subject guarantor | prof. Ing. Jiří Bažan, CSc. | Subject version guarantor | prof. Ing. Jiří Bažan, CSc. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 3 | Semester | summer |
| | Study language | Czech |
| Year of introduction | 2004/2005 | Year of cancellation | 2015/2016 |
| Intended for the faculties | FMT | Intended for study types | Bachelor |
Subject aims expressed by acquired skills and competences
- student will be able to characterise production technologies in steelmaking aggregates
- student will be able to formulate conditions of steel deoxidisation
- student will be able to describe ways of steel secondary metallurgy treatment and steel casting
- the student will be able to demonstrate basic ongoing regularities during casting,solidification and crystallization of steel, and he is able to verify this knowledge using simulation solidification of ingots (using ProCAST) and in the practical exercises.
Teaching methods
Lectures
Seminars
Individual consultations
Tutorials
Summary
Subject is read with the purpose to understand the theoretical principles of
steelmaking, the steelmaking technology in particular aggregates, the steel
deoxidization and its treatment by secondary metallurgy, processes taking place during the casting, solidification and crystallization of the steel by the steel ingot casting, and also by the continuous casting machine.
Compulsory literature:
Recommended literature:
Way of continuous check of knowledge in the course of semester
Semestral work with point evaluation and its defence within seminar in the course of lessons.
E-learning
For electronic communication with tutors use their university e-mail addresses, which can be found here: http://staff.vsb.cz/
Other requirements
Monitoring of other sources of information news from the field of metallurgy.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lectures
1. Introduction to the subject. Steelmaking in Czech Republic and in the world.
2. Theory of slags. Basic steelmaking reactions. Mixers.
3. Refractory materials used at steelmaking, material properties. Possibilities of evaluation of properties and resistance of refractory materials to molten metals and slags.
4. Steelmaking in SM furnaces. Process variants.
5. Steelmaking in oxygen LD converters, design, course of oxidation of individual elements.
6. Steelmaking in bottom blown oxygen converters, course of individual reactions.
7. Converters with combined blowing.
8. Steelmaking in T-furnaces, furnace design, production technology.
9. Steelmaking in EAF and in induction furnaces, design, production technology.
10. Deoxidation of steel, deoxidation methods. Alloying of steel, role of ferro-alloys. Cleanness of steel.
11. Secondary processing of steel, vacuum refining, refining by inert gases.
12. Casting of steel, equipment of cast houses, classification of steels by degree of deoxidation, crystallization of steel, regularities of solidification.Defects of ingots.Segregation phenomena.
13. Numerical simulation of solidification of ingots (use the ProCAST - the influence of various factors on the process of solidification and the occurrence of segregation).
14. Continuous casting of steel, division of production, benefits, disadvantages, design of equipment. Tundish metallurgy. New directions of casting of thin continuously cast blanks.
Exercises
1. Introductory exercise. Familiarisation with the subject. Steelmaking in Czech Republic and in the world.
2. Standards of steels.
3. Slags, ion and molecular theory, role of slags at steelmaking and processing of steels.
4. Basic steelmaking reactions, decarburisation, dephosphorisation, desulphurisation, calculations.
5. Material and thermal balance of LD converter, metal loss, yield of steel.
6. Plant tour at ArcelorMittal Ostrava, a.s., T-furnaces, LF, CCM.
7. Calculation of the main dimensions of EAF, oxidation and reduction periods in EAF.
8. Plant tour at – VÍTKOVICE HEAVY MACHINERY, a.s. + Evraz Vítkovice Steel, a.s.
9. Deoxidation, alloying, calculation of alloying elements.
10. Secondary processing of steels.
11. Crystallisation of steels, classification of CCM, structural elements, defects of continuously cast blanks.
12. Laboratory experiments of steel solidification (familiar with the problem, the division of tasks, preparation and realization of simulation of solidification and crystallization and evaluation results).
13. Perspectives of continuous casting of steel.
14. Evaluation of exercises, credit.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
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