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Production and properties of austenitic steels
Líkař, Martin ; Bořil, Petr (referee) ; Ostratický, Marek (advisor)
The bachelor thesis describes production of austenitic steels and their properties. First part of thesis contains general overview of austenitic steels and their division according to chemical composition. The second part includes production, which deals with secondary metallurgy. The third part deals with properties of austenitic steels, where is mentioned their use in practise. The aim is to develop research describing production, properties and composition of austenitic steels in view of their utilization.
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Microstructure of high-alloy steels
Feller, Šimon ; Bořil, Petr (referee) ; Ostratický, Marek (advisor)
This bachelor thesis concerns formation of microstructure of high-alloy steels. In theoretic part there is summary of sorting high-alloy steels, possible structures and how these structures affect qualities of steel. For practical part two small experimental casts were created, which tried to imitate composition and structure of two another, much bigger casts. Microstructure, makrostructure and grain boundary segregation were compared.
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Heat treatment of ductile iron
Vávrová, Veronika ; Ostratický, Marek (referee) ; Bořil, Petr (advisor)
The bachelor thesis is focused on heat treatment and influence on the structure and properties of ductile iron. In the first part there is a description of the basic properties of ductile iron. Then the various types of heat treatment are presented. There is an experiment included focused on ferritisation annealing and its influence on the structure.
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Production and properties of cast iron with compacted graphite
Zubáková, Alexandra ; Ostratický, Marek (referee) ; Bořil, Petr (advisor)
This bachelor thesis summarizes knowledge of production and properties of compacted graphite iron. The first part describes its structure, chemical composition and the process of formation of compacted graphite. The following section describes methods used for production of compacted graphite iron. This thesis also contains summary of technological, mechanical and physical properties of compacted graphite iron.
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Casting production - Full mould technology
Lekeš, Petr ; Bořil, Petr (referee) ; Pernica, Vítězslav (advisor)
The aim of this thesis is to elaborate a complete study on the topic of production of castings by a evaporation pattern and the apply my knowledge I gained from completing this thesis and make my own cast. Based on the assigment the thesis is devided into two parts, where the first part is focused on the problems of production by this technology, from creating the evaporable pattern, through modern technologies used for this method of casting, to possible defects in the cast, which are connected with this method. In the second part is described the process of making the experimental cast. The result of this work was the familiarization with this unconventional method of casting and the evaluation of its application in today’s foundry industry, as a full-value alternative for common casting technologies.
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Production of castings using Rapid prototyping
Baránek, Martin ; Myška, Martin (referee) ; Bořil, Petr (advisor)
The work is focused on the production of a decorated stand casting using rapid prototyping and reverse engineering methods. The thesis first performs a literature search dealing with selected additive technologies usable for the production of foundry patterns or molds. Subsequently, the work describes the basics of 3D scanning technology. The experimental part of the thesis describes the production process of castings. The original was first digitized using a hand-held scanner, the obtained data were modified as needed and served as an input for 3D printing of permanent foundry patterns. Their production took place on a FDM 3D printer PRUSA MK3S and they were made of PLA material. The models were then formed into sand molds. The resulting castings were made of grey cast iron.
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Production of castings by the Full-Mold casting using 3D printed models
Svoboda, Jaroslav ; Jelínek, Radim (referee) ; Bořil, Petr (advisor)
The aim of the work is to produce a casting using the evaporable model method with the use of 3D printed models. First, the thesis conducts a research on the topic and then discusses the process of producing a casting using this method. The PRUSA MK3S+ 3D FDM printer was chosen for the production of the model and HIPS and PMMA filaments were selected. This is followed by the selection of a model coating suitable for this technology, moulding into non-permanent sand moulds and casting the models. Finally, the final surfaces of the cast models with and without coating are compared.
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Manufacture of flaskless foundry moulds in ferrous and non-ferrous metal foundries
Bořil, Petr ; Lána, Ivo (referee) ; Cupák, Petr (advisor)
The bachelor thesis handles a summary of working methods of frameless casting molds and compares advantages and disadvantages of individual technologies. In its practical part, the thesis is focused on a corporation Slévárna a modelárna Nové Ransko, s.r.o. whose frameless molding went through a modernization that is the subject of this thesis. A morally and physically obsolete production line UNIVERSAL KFA 20 was exchanged for a more accurate and efficient one – DISA MATCH 20/24.
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