618-0813/02 – Cleanness and Usable Properties of Steel (ČaUVO)

Gurantor departmentDepartment of Metallurgy and FoundryCredits5
Subject guarantorprof. Ing. Karel Michalek, CSc.Subject version guarantorprof. Ing. Karel Michalek, CSc.
Study levelundergraduate or graduateRequirementCompulsory
Year2Semestersummer
Study languageCzech
Year of introduction2004/2005Year of cancellation2010/2011
Intended for the facultiesFMTIntended for study typesFollow-up Master
Instruction secured by
LoginNameTuitorTeacher giving lectures
GRY04 doc. Ing. Karel Gryc, Ph.D.
MIH50 prof. Ing. Karel Michalek, CSc.
SAW002 doc. Ing. Markéta Tkadlečková, Ph.D.
Extent of instruction for forms of study
Form of studyWay of compl.Extent
Combined Credit and Examination 16+0

Subject aims expressed by acquired skills and competences

- student will be able to characterise basic terms from field of chemical and metallographical 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 metallographical cleanness - student gains experience in the preparation of steel samples for microscopic analysis, self-microscopic analysis of defects in steel area of confrontation with the standards and the results of numerical modelling - student will learn to process and interpret the results of numerical modelling of filling and solidification of steel in the QuikCAST postprocessor software.

Teaching methods

Lectures
Seminars
Individual consultations
Tutorials
Experimental work in labs
Project work

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, CRC Press, USA, 2000, 322 p., ISBN 9780849302640. [2] Stolte, G.: Secondary Metallurgy – Fundamentals, Processes, Aplications. StahlEisen Communications, Germany, 2002, 216 p., ISBN 978-3-514-00648-5.[5] [3] Yogeshwar Sahai, Toshihiko Emi: Tundish Technology For Clean Steel Production. World Scientific Publishing Co. Pte. Ltd., Singapore, 2008. 328 s. ISBN-10: 9812706216

Recommended literature:

[1] Mazumdar, D., Evans, J., W.: Modeling of Steelmaking Processes. CRC Press, 1 edition, 2009. 493 pages. ISBN-13: 978-1420062434 [2] Ghosh, A., Chatterjee, A.: Ironmaking and Steelmaking. Prentice-Hall of India Pvt.Ltd, 2008. 472 pages. ISBN-13 978-8120332898CAD Časopis (ČR) [3] Modeling and Simulation of Microstructure Evolution in Solidifying alloys, Laurentiu Nastac,Kluwer Academic Publishers,2004, Boston. ISBN 1-4020-7831-5, eBook ISBN:1-4020-7832-3… [4] J.A.Dantzig, M. Rappaz: Solidification.2009. First edition, ISBN: 978-2-940222-17-9 (EPFL Press), ISBN 978-0-8493-8238-3 (CRC Press) [5] Articles in professional journals, papers of conferences, research reports, theses.

Way of continuous check of knowledge in the course of semester

Two scored semester works. Two scored progress tests.

E-learning

Only study support in Czech language is available now: http://www.fmmi.vsb.cz/cs/okruhy/studium-a-vyuka/podklady-ke-studiu For electronic communication with the teachers enjoy the university e-mail addresses those can be found here: http://staff.vsb.cz/ Integration of e-learning elements into the subject is in progress.

Další požadavky na studenta

There are not additional requirements on students in the field of this subject.

Prerequisities

Subject has no prerequisities.

Co-requisities

Subject has no co-requisities.

Subject syllabus:

Course content 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. 5. Thermodynamics of sulfides, nitrides and carbides. Effect of deoxidation of steel on the non-metallic inclusions systems.The secondary oxidation of steel. 6. 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. 7. 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. 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. 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. 10. 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: 2008/2009 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 (30) 20
                Other Type of Task Other task type 30  0
        Examination Examination 70 (70) 0
                Oral Examination Oral examination 70  0
Mandatory attendence parzicipation:

Show history

Occurrence in study plans

Academic yearProgrammeField of studySpec.FormStudy language Tut. centreYearWSType of duty
2010/2011 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production K Czech Ostrava 2 Compulsory study plan
2009/2010 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production K Czech Ostrava 2 Compulsory study plan
2008/2009 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production K Czech Ostrava 2 Compulsory study plan
2007/2008 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production K Czech Ostrava 2 Compulsory study plan
2006/2007 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production K Czech Ostrava 2 Compulsory study plan
2005/2006 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production K Czech Ostrava 2 Compulsory study plan

Occurrence in special blocks

Block nameAcademic yearForm of studyStudy language YearWSType of blockBlock owner