618-1801/01 – Theory of Foundry Engineering Processes I. (TSPI)
| Gurantor department | Department of Metallurgy and Foundry | Credits | 6 |
| Subject guarantor | prof. Ing. Tomáš Elbel, CSc. | Subject version guarantor | prof. Ing. Tomáš Elbel, CSc. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 1 | Semester | winter |
| | Study language | Czech |
| Year of introduction | 2012/2013 | Year of cancellation | 2020/2021 |
| 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 define influences affecting foundry processes;
- to describe basic processes during forming a casting from pouring it up to metal cooling;
- to calculate the gating system;
- to calculate the risers;
- to explain the conception of controlled solidification.
Teaching methods
Lectures
Seminars
Individual consultations
Tutorials
Experimental work in labs
Project work
Summary
Structure and physical properties of molten metals. The principles of metal
flowing, pressure conditions in gatings. The running property of liquid metals
and alloys and their coherence with the design of castings. The thermal and
physical processes in a casting and in a mould. Interaction between casting
and
mould. Crystallization and solidification of castings.
Compulsory literature:
CAMPBELL, J.: Castings, Butterworth-Heinemann. Oxford, 2000.
SCHLEGG,F.P. et al. Technology of Metalcasting , AFS Publication, 2003.
Recommended literature:
STEFANESCU,D,,M. : Science and Engineering of Casting Solidification.Cluver Academic/Plenum Publishers, New York, 2002.
DANTZIG,J.A.;RAPPAZ,M. : Solidification, EPFL Oress, Boca Raton,2009
Way of continuous check of knowledge in the course of semester
One test
Two scores projects
E-learning
http://www.fmmi.vsb.cz/cs/okruhy/studium-a-vyuka/podklady-ke-studiu/studijni-opory/
Other requirements
Study subject don´t requires further requirements for student
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
1. Physical properties of molten metals and alloys.
2. Fluidity and castability of molten metal.
3. Flow dynamics of molten metal.
4. Gating system design.
5. Gases in metal and their transport in mould cavity.
6. Crystallization. Nucleation. Dendritic growth.
7. Solidification (freezing) of casting. Thermal axis.
8. Solidification contraction and shrinkage formation.
9. Hot spots. Chills. Feeding distance.
10. Risering (feeding) . Progressive and directional solidification.
11. Solid contraction.
12. Contraction stress. Hot tearing.
13. Properties of metals at high temperature (near solidus).
14. Thermal stress, Residual stress. Cold cracking.
Practice:
1st Opening exercises, lab work Poruba, EKF, security training.
2nd Differential thermal analysis (measure T for Exercise 7).
3rd The viscosity of molten metals and alloys. The surface tension of metals and alloys.
4th Cooling curves of metal (pure metal, alloy, measuring T for Exercise 7).
5th Fluidity I. (temperature effect - one alloy).
6th Fluidity II. (alloy of impact - constant overheating).
7th Fluidity III. (forms of influence - one alloy).
8th Gating system I (calculations, discharge from the pan, lift).
9th Feeding System II. (modeling the AFS - μ).
10th Gating system III. (calculations).
11th The temperature field of casting I (JBS - condensation zone).
12th The temperature field of casting II. (chromite + water glass (SiO2)).
13th Crystallization - a film on the etched samples dendritic structure.
14th Credits.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction