618-3008/01 – Cleanness and Usable Properties of Steel (ČaUVO)

Gurantor departmentDepartment of Metallurgy and FoundryCredits6
Subject guarantorprof. Ing. Karel Michalek, CSc.Subject version guarantorprof. Ing. Karel Michalek, CSc.
Study levelundergraduate or graduateRequirementChoice-compulsory
Year2Semestersummer
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.
SAW002 doc. Ing. Markéta Tkadlečková, Ph.D.
WAL0017 Ing. Josef Walek
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

Acquired knowledge - student will be able to characterise basic terms from field of chemical and metallographic steel cleanness, - student will be able to formulate basic physical chemical processes at formation of non-metal inclusions in steel including their activity on steel properties, - student will be able to describe possibilities of contemporary metallurgy for steelmaking with high requirements on steel chemical and metallographic cleanness. Acquired skills - student will be able to use his knowledge in the field of cleanness and usable properties of steel to take a part on the optimization of steel making process, - student will be able to evaluate the results obtained from the metallography for steel making process optimization.

Teaching methods

Lectures
Seminars
Individual consultations
Tutorials
Experimental work in labs

Summary

The subject is focused on improvement and advancement of knowledge about chemical and metallographic cleanliness of steel. It deals with possibilities of cleanliness classification, technological method of its achievement and exact methods of its evaluation. The intention is to demonstrate wider relation between technology of steel production, cleanliness of steel and usable properties of steel.

Compulsory literature:

[1] GHOSH, A.: Secondary Steelmaking - Principles and Applications. New York, 2001, 322 p. [2] STOLTE, G.: Secondary Metallurgy – Fundamentals, Processes, Aplications. StahlEisen Communications, Germany, 2002, 216 p., ISBN 978-3-514-00648-5.

Recommended literature:

Articles in professional journals, papers of conferences, research reports, theses.

Way of continuous check of knowledge in the course of semester

E-learning

Další požadavky na studenta

elaboration of semester project, passing of progress tests

Prerequisities

Subject has no prerequisities.

Co-requisities

Subject has no co-requisities.

Subject syllabus:

1. The importance of steel production in the global and national scale. Characteristics of chemical cleanliness. Effect of P, S, N, H and O on the properties of steel. The main principles of metallurgical steel production with low content of those elements. 2. Non-ferrous metals in the steel. Sources of non-ferrous metals in steel production. Ways to reduce the non-ferrous metals in the steel crap. Effect of non-ferrous metals in the steel. Positive and negative effects of non-ferrous metals on the properties of steel. 3. Effect of non-ferrous metals on the properties of steels for the manufacture of equipment for power engineering. Limits of the contents of non-ferrous metals in the steel. J, B and K factors of steel cleanliness. 4. The metallography cleanliness of steel. Distribution of nonmetallic inclusions - endogenous and exogenous inclusions.Sources and origin of the exogenous non-metallic inclusions. Thermodynamics of oxide inclusions. Thermodynamics of sulfides, nitrides and carbides. Effect of deoxidation of steel on the non-metallic inclusions systems.The secondary oxidation of steel. 5. The influence of nonmetallic inclusions on steel properties. Effect on mechanical properties. Influence of inclusions under cyclic loading. Identification of non-metallic inclusions. Optical microscopy, image analysis, electron probe microanalysis of inclusions, chemical methods of inclusions identification. 6. Summary of metallurgical production processes allowing high steel petrographical cleanliness. Application possibilities for the removal of secondary metallurgy tracing elements. Modification of inclusions. Injection metallurgy. Vacuum metallurgy. 7. Stainless steel. Corrosion resistance. Types of corrosion.Influence of chemical composition. Types of stainless steel. Effect of inclusions on corrosion resistance of steel, steel machinability, weldability of steel. Peculiarities of morphology and chemical composition of inclusions in stainless steel - impact on the properties of steel. 8. Specific requirements for steel production technology with high carbon - cord steel.Requirements for the raw materials, the method of secondary processing. Technology of steel casting and crystallization. Subsequent processing methods of semi finished products and the use of finished products. 9. Low carbon steel. ULC steel, the IF steel. Transformer steel. Vacuum decarburization. Principles. Examples of technologies. Rotating vacuum with stirring oxygen. KTB process.

Conditions for subject completion

Combined form (validity from: 2014/2015 Summer 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