635-3011/01 – Thermal processes in industrial furnaces (TPPP)
| Gurantor department | Department of Thermal Engineering | Credits | 5 |
| Subject guarantor | doc. Ing. Marek Velička, Ph.D. | Subject version guarantor | doc. Ing. Pavel Šonovský, CSc. |
| Study level | undergraduate or graduate | Requirement | Choice-compulsory |
| Year | 2 | Semester | winter |
| | Study language | Czech |
| Year of introduction | 2014/2015 | Year of cancellation | 2022/2023 |
| Intended for the faculties | FMT | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
- student will be able to characterise technology of metal heating in industrial furnaces
- student will be able to calculate basic parameters of metal heating in industrial furnaces
- student will be able to formulate basic thermo-technical processes during metal heating in industrial furnaces
- student will be able to use his knowledge to make a decision about way of heating of metal in industrial furnaces
- student will be able to apply his theoretical knowledge to propose the metal heating technology in industrial furnaces
- on basis of his knowledge student will be able to choose optimal type of industrial furnace for metal heating
Teaching methods
Lectures
Tutorials
Summary
The subject is focused on extended theoretical and practical knowledge of heating process and cooling process of metal materials, technology of heating and thermal treatment from the perspective of thermal processes, thermo-technical conditions at heating in industrial furnaces, mainly in the pusher, walking beam, revolving furnaces and in furnaces for thermal treatment.
Compulsory literature:
Recommended literature:
Additional study materials
Way of continuous check of knowledge in the course of semester
E-learning
Other requirements
Making of semestral project and passing the progress tests.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
1. Properties of metals and alloys depending on temperature – thermal conductivity, specific heat capacity, density, linear and volume thermal expansion, coefficient of thermal inertia.
2. Basic terms – combustion radiation in furnaces space, temperature of furnace and lining, external and internal heat transfer, differentiation of charge on thin and thick body.
3. External heat transfer – effect of relation position of grey bodies, balance of thermal flows on surface of lining, convective heat transfer of heated material, resulting equal of external heat transfer, graphic-analytical solution of external heat transfer, approximate calculation of external heat transfer, heating or cooling in liquid environment, cooling of charge in the air.
4. Theoretical calculation of heating of thin bodies – heating of thin bodies in furnace with constant temperature and with variable temperature.
5. Theoretical calculation of heating of thick bodies – derivation of Fourier differential equal of heat conduction, general solution of differential equal of heat conduction, conditions of uniqueness at solving the equal of heat conduction, effect of geometric shape of bodies, their average temperature and heat content.
6. Technological principles of metal heating – final temperature of metal heating, thermal stresses during heating and cooling of metals, placing of material in furnace space, allowed unevenness of heating and degree of warming, metal heating modes and their choice, proposal of metal heating mode, empiric relations for determining heating time.
7. Oxidation and decarbonisation of steel during the heating – theoretical basis of steel oxidation, effect of technological factors and furnaces atmosphere on burn out of metal, calculation of melting loss during metal heating, decarbonisation of steel, ways to reduction of steel melting loss.
8. Calculation of steel heating v basic types of industrial furnaces – heating of round billet and ladle skull in the pusher and walking beam furnaces, heating of round billet and ladle skull in revolving furnaces.
9. Calculation of steel heating v basic types of industrial furnaces –heating of material in chamber furnaces, steel heating during thermal treatment.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction