652-3025/01 – Foundry of steel castings (SOO)
| Gurantor department | Department of Metallurgical Technologies | Credits | 7 |
| Subject guarantor | doc. Ing. Ivana Lichá, Ph.D. | Subject version guarantor | doc. Ing. Ivana Lichá, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 2 | Semester | winter |
| | Study language | Czech |
| Year of introduction | 2022/2023 | Year of cancellation | |
| Intended for the faculties | FMT | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
Acquired knowledge:
- the student will be able to characterize the technology of steel making for castings in electric arc furnaces and induction medium frequency furnaces
- the student will be able to explain the concept of processing of steel for castings in the sphere of secondary metallurgy and the basic causes of the origin of individual kinds of foundry defects.
Acquired skills:
- the student will be able to use their knowledge to determine the appropriateness of technological and metallurgical processes in the production of steel castings,
- the student will be able to apply their theoretical knowledge to proposed modifications to the technology of steel castings in the foundry practice.
Teaching methods
Lectures
Individual consultations
Tutorials
Summary
The subject focuses on theoretical and practical aspects connected with the of steelmaking for castings in electric arc and induction furnaces. Ways and possibilities of steel processing in the area of secondary metalurgy currently used in steel foundries are also presented. The subject also deals with the determination of causes of occurence of individual kinds of defects of steel castings.
Compulsory literature:
Recommended literature:
Additional study materials
Way of continuous check of knowledge in the course of semester
E-learning
http://www.fmmi.vsb.cz/cs/urceno-pro/studenty/podklady-ke-studiu/studijni-opory
Other requirements
Elaboration of semestral projects and completion of the interim tests
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
1. Introduction to history of ironmaking up to the present. Basic parameters of electric arc furnaces and electric induction furnaces.
2. The fundamentals of thermodynamics of steelmaking processes. Solutions of molten metals, non-metals and gases.
3. Norms and assortment of steels for castings. Structural steels for castings. Special steels for corrosion-resistent castings. Special steels for abrasion-resistent castings.
4. Construction and thermal mode of operation of an electric arc furnace (EAF). Linings of electric arc furnaces. The development of EAF technology.
5. Production of unalloyed steels for castings in basic electric arc furnaces. The process of individual technological-metallurgical phases. Practice of melt control.
6. Technology of production of alloyed steels for castings in alkaline electric arc furnaces. Function of main thermodynamic conditions of metallurgical processes.
7. Intensification of production of steel in EAF. Contemporary development trends in steel making in EAF.
8. Production of steel in acidic EAF. The advantages of acidic EAF compared to alkaline EAF.
9. Construction and thermal mode of operation in electric induction medium frequency furnace (EIF). Stamping refractory materials of EIF. Practice of melt control.
10. Technology of production of unalloyed and alloyed steels in EIF.
11. Deoxidation of steel in a furnace ladle and casting. Final deoxidation of steel in a ladle and its effect on steel properties.
12. Possibilities of secondary metallurgy in steel foundries. Using individual methods and principles of individual processes of secondary metallurgy.
13. Defects of steel castings. Causes of the origin of individual kinds of defects and possibilities of removing them.
14. Some possibilities of using cost analysis to control production. A method of variance calculation and incomplete real actual costs. Using costs to control production.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction