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Terminated in academic year 2021/2022

Basic theory and technology of foundry

Type of study Bachelor
Language of instruction Czech
Code 618-2021/01
Abbreviation ZTTS
Course title Basic theory and technology of foundry
Credits 5
Coordinating department Department of Metallurgy and Foundry
Course coordinator doc. Ing. Petr Lichý, Ph.D.

Subject syllabus

1. Foundry industry in the Czech republic and in the world, statistics, possibilities and limits of casting production. Procedure of casting production from a design to the dispatch department
2. Applied processes and techniques in foundries. Production of castings using lost sand mold, mechanized mold making and core making- sqeezing, jolting, impact molding,blasting, shooting
3. Molding materials, sand, binders, mold and core making technologies, molding mixtures making and testing, sand reclamation techniques
4. Production of castings using permanent metal molds – gravity die casting, high pressure die casting, low pressure die casting, centrifugal casting
5. Melt flow in molds,properties of molten metals, castability , influencies on the fluidity of metals and alloys. Running systém design
6. Static and dynamic action of melted metals on the mold, upward metalostatic pressure calculation. Gases in melted metals, their dissolubility, methods of the melt degasing. Gases in the mold, methods of the mold degasing. Blow hole formation.
7. Thermodynamic of the crystalisation, homogeneus and heterogeneus nucleation. Primary crystalisation of the casting. Casting solidification – calculation of total solidification time, solidification velocity.Tthermal diffusivity of the mold.
8. Solidification shrinkage , hot spots and their elimination – casting design rules, feeding (risers), chilling.
9. Calculation of the riser volume, riser modul,types of risers, intensification of the riser efficiency.
10. Consequences of the solid shrinkage – thermal, transformation, residual stresses. Tears and hot tears. Basic casting defects and their prevention.
11. Cast steels, standarts, properties, metalurgy, casting rules
12. Cast irons and their classification by grafite shape – lamellar grafite část irons, sferoidal grafite část irons, basic properties, metalurgy
13. Metallurgy, casting and properties of část Al, Mg, Zn,Cu, Ti alloys
14. Visit of a foundry and its basic technologies – pattern making, mold making, core making,melting, casting, sheaking- out, refinning.

Literature

SCHLEG, F.P. and F.H. KOHLOFF. Technology of metalcasting. Des Plaines: American Foundry Society, c2003. ISBN 0-87433-257-5.
CAMPBELL, J. Complete casting handbook: metal casting processes, metallurgy, techniques and design. Second edition. Amsterdam: Elsevier Butterworth-Heinemann, 2015. ISBN 978-0-444-63509-9 .

Advised literature

CAMPBELL, J. Castings. 2nd ed. Oxford: Elsevier Butterworth-Heinemann, 2003. ISBN 0-7506-4790-6.