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Present state of investment casting technology
Bártů, Zbyněk ; Horenský, Jiří (referee) ; Horáček, Milan (advisor)
.The bachelor’s thesis is focused on the most modern and latest trends used in investment casting technology. The aim of this bachelor thesis is literary research on the most modern equipment that used wax pattern manufacture, ceramic shell manufacture, de-waxing, metal pouring and finishing operation. The first part describes the history and development of the investment casting technology. The following chapters disclose a general procedure for the production of the investment casting technology and equipment suitable for its manufacture.
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Possibilities of using aditive technologies in direct manufacturing of foundry moulds
Herzán, Jiří ; Šlajs, Jan (referee) ; Horáček, Milan (advisor)
The bachelor thesis deals with the production of foundry molds with using additive technologies. At first, the additive technologies are distributed according to ASTM (American Society for Testing and Materials) and subsequently according to the state of the base material. Then, three types of technologies, that can be manufactured by Rapid Prototyping are described. The last chapter of the bachelor thesis is a real example of the production of a prototype fan casting from aluminum alloy AlSi9Cu3(Fe), which was casted into a printed mold by “3D Sand Printing” technology. Based on the obtained data were assessed technical, time and cost parameters of manufacturing the fan. The findings were compared with the molding technology of the ordinary printed pattern, which is an alternative to prototype production. The casting of the fan was cast in Armatmetal s.r.o. in Olomouc.
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Present state of investment casting technology
Ostrézí, Barbora ; Vašťák, Patrik (referee) ; Horáček, Milan (advisor)
This bachelor thesis is focusing on production of lost wax pattern and monitoring of the latest trends in this area. Thesis describes procedures of production from mother die, types of used waxes, production of ceramic shell, de-waxing and shell firing, production and using ceramic cores, removal of ceramic shell and finishing operations. The goal of this thesis is to formulate literature search dedicated to overview of presently used technologies and also the latest raw materials used in this technology.
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Foundry technologies from the point of view of castings accuracy
Hýbal, Ondřej ; Vašťák, Patrik (referee) ; Horáček, Milan (advisor)
This bachelor’s thesis deals with various casting technologies, specifically about investment casting technology, evaporative-pattern casting and die casting. These technologies compares not only on achieving the smallest dimensional tolerances of the final casts, but also of other factors such as surface roughness, wall thickness and production economics. This thesis also describes casting accuracy in general and informs about the management strategy of Six Sigma.
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Survey of applications of investment casting from ferrous alloys and super-alloys
Smilovský, David ; Zemčík, Ladislav (referee) ; Horáček, Milan (advisor)
A content of this thesis is a survey of casting applications from specific alloys manufactured by investment casting. Thesis shows basic principles of investment casting method, its possibilities and advantages. It also lists a short metallurgical description of ferrous alloys a superalloys cast by this method. The main aim is on specific industrial branches, where these precise castings are used. There are specific applications of parts presented from various Czech and foreign foundries.
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