- Foundry technology
To acquaint students with the general and practical knowledge in the field of the moulding mixture preparation, moulds and castings production, and with the methods of solving of technologic and metallurgical problems at the level of recent knowledge of the branch, as well. To make students know about methods and means of the casting mould production using bonding systems of the first, the second and the third generation, as well as to analyse phenomena which influences onto the quality of the produced castings and it’s utility properties. To acquaint students with the technical preparation of production in metal foundry, with the methods of metal casting, castings finishing and with machines and equipment used in the foundry.
Course contents:
1. The Fundamentals of the metal casting; Occupational safety and health act.
2. Moulding materials and moulding mixtures.
3. Sand compacting, hand moulding.
4. The methods of machined sand moulding.
5. Mould and core production using methods of 2nd and 3rd generation.
6. Investment casting, expendable moulds.
7. Casting materials, their foundry characteristics.
8. Melting, melting furnaces, basics of metalurgical operations.
9. Mold casting methods.
10.Post-casting operations.
11.Casting defects and inspection.
prof. Ing. Alexander Čaus, DrSc. (person responsible for course)
doc. Ing. Štefan Podhorský, CSc. (examiner, instructor, lecturer, tutor)
Ing. Roland Šuba, PhD. (instructor, lecturer, tutor)
- Theory of Foundry
To acquaint students with the theoretical knowledge about processes and materials that are applied in the preparation and casting of molten metal into the foundry mould, and during solidification of castings and their processing. To teach them to analyse the phenomena that affect the quality of the produced castings and the final working properties of foundry metals and alloys, and then choose effective methods and means to control these phenomena.
Course contents:
1. Theory of internal order in liqiuds and solids. Solidification of metals and alloys.
2. Basic structures of foundry alloys and their basic binary equilibrium phase diagrams.
3. Solidification of metals and aloys in a mould.
4. Mechanisms of refining the primary structure.
5. The phenomena accompanying solidification of metals and alloys.
6. Casting properties of metals and alloys.
7. Fundamentals of solidification and microstructure formation in steels and cast irons.
8. Graphite cast irons with lamellar graphite.
9. Graphite cast irons with other graphite shapes differing from lamellar one.
10. Non-ferrous metals and alloys.
11. Physical-chemical fundamentals of metallurgical processes for melting the steels and cast irons.
12. Laminar and turbulent flow of melt, interaction between melt and mould material.
13. Function and basic parts of gating systems. Computer-aided disign and calculation of gating systems.
Ing. Roland Šuba, PhD. (examiner, instructor, lecturer)
- Selected Clauses from Theory and technologies casting
The aim of the course is to acquaint the postgraduate students with theoretical knowledge regarding modern processes and materials which are applied in the foundry industry. The students have to gain knowledge and skills which will allow analysing the phenomena which affect the quality of manufactured castings and final working properties of the selected foundry alloys, and, consequently, choosing the effective methods and equipment to control these phenomena.
Course contents:
1. Classification of tool steels according to their structure and application. Chemical compositions of tool steels
2. Effect of metallurgical methods on the properties of tool steels
3. Secondary metallurgical treatment of tool steels
4. Theory and practice of the heat treatment of tool steels
5. High-speed steels for cast cutting tools
6. Foundry technologies used for the manufacturing of cutting and forming tools
7. Physical-chemical fundamentals of the treatment of the foundry alloy melt using inoculating and modifying additions
8. Classification of the graphitic cast irons according to the matrix structure and the graphite shape
9. Theory and practice of the inoculating treatment of cast irons
10. Theoretical and technological fundamentals of the production of graphitic cast irons of different types
11. Physical-chemical fundamentals of the nonferrous alloys melting
12. Fundamental knowledge on the structure and properties of the selected nonferrous alloys and the methods of their improvement
13. PC-based casting simulation in foundry
Name of lecturer(s):
prof. Ing. Alexander Čaus, DrSc. (person responsible for course)
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Quality Control of Products
Students acquires knowledge in the field of quality inspection and defects detections in the frame of production technologies. Students acquires on overwiev about current analythic and defectoscopic methods of the production quality inspection. Students will be able to design a proper procedure for quality check of a particular product at a particular step of the production process.
Course contents:
1. The basic terminology.
2. Definition and classification of product’s defects as well as of the testing methods during the production process.
3. Typical defects of castings, formings and welding joints.
4. Visible and hidden defects. Defects of appereance and dimensions, surface defects and discontinuities – crackings and tearings.
5. Methods of visual inspection, methods of dimensional inspection, the defectoscopic methods of surface and subsurface defects. Inner defects – cavities, metallic and non-metallic inclusions.
6. Defectoscopic methods for inner defects test.
7. Structural anomalies, incorrect chemical composition, testing mechanical properties of the product’s material.
8.Methods for quality checking and control of the production process.
Name of lecturer(s):
prof. Ing. Alexander Čaus, DrSc. (lecturer, person responsible for course)
doc. Ing. Štefan Podhorský, CSc. (examiner, instructor, lecturer)
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Materials Processing Technologies
The student will acquire knowledge about casting, welding, forming and machining technology from the point of view of their impact on the changes of the wide spectrum properties of processed materials. He will understand the influence of the different technological processes on the final exploitation properties of the workpiecies and he will be able to racionally manage these processes.
Course contents:
1. Casting
– expendable and non-expendable casting processes, advanced methods of casting,
– casting properties of materials,
– influence of casting processes parameters on structure and mechanical properties of castings.
2. Welding
– basic and advanced welding technologies,
– weldability of materials and its evaluation,
– influence of welding processes parameters on changes of welded materials properties.
3. Forming
– sheet forming, bulk forming and advanced methods of forming,
– formability of material and its evaluation,
– cold, hot and warm plastic deformation of material and its impact on structure, mechanical and exploitation properties of formed parts.
4. Machining
– basic and advanced methods of machining,
– tool wear and tool life,
– machinability of materials and its evaluation.
Name of lecturer(s):
Ing. Martin Bajčičák, PhD. (examiner, instructor, lecturer)
doc. Ing. Jozef Bílik, PhD. (examiner, instructor, lecturer)
doc. Dr. Ing. Pavel Kovačócy (examiner, instructor, lecturer)
Ing. Michaela Kritikos, PhD. (examiner, instructor)
prof. Ing. Peter Šugár, CSc. (examiner, instructor, lecturer, person responsible for course)
doc. Ing. Jana Šugárová, PhD. (examiner, instructor)
Areas of education:
- metallurgical processing of metals,
- design and construction of model equipment and foundry molds,
- technologies for the production of foundry molds and cores,
- casting technology,
- quality control of castings.