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Optimization of wax pattern technology in the company Fimes
Žuja, Jaroslav ; Vašťák, Patrik (referee) ; Horáček, Milan (advisor)
This thesis is to evaluate currently used wax and compare its properties with of newly purchased one. Further, it is to evaluate whether the quality is reflected by using "boiled wax'', which is being used as a runner wax. All tests were carried out at the Fimes a. s. In the first part of this thesis, there is a brief description of the lost wax method. This is followed by a decription of wax blends from technology point of view. The experimental part describes the operations from the production of wax patterns, through their dimensional inspection, up until dewaxing process. All the results are noted and compared.
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Silicone molds and their use
Rudolf, Jiří ; Zouhar, Jan (referee) ; Jaroš, Aleš (advisor)
Bachelor thesis is focused on the design and production of a headphone holder. Thesis is divided into theorethical and practical part. The theoretical part is described Rapid Prototyping technology, precision casting with use of silicone molds and precision investment casting. The practical part is focused on the design of a headphone holder in CAD system Autodesk Inventor and following production via two different methods. The first way is 3D printing by Fused Deposition Modeling method and the second way is casting wax and plastic models using a silicone rubber mold. Conclusion of this thesis contains technical-economic evaluation and comparison of both manufacturing methods.
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Present state of investment casting technology
Mazůrek, Tomáš ; Zemčík, Ladislav (referee) ; Horáček, Milan (advisor)
The bachelor’s thesis elaborated within the scope of full-time study of specialization B-STI Mechanical Engineering is dealing with procedures and methods of production castings using the lost wax casting technology. This literature review deals with the entire production process from casting molds for the production models to the ultimate control of manufactured parts and is structured exactly as the technological process in the manufacture of components. For each of the technological process are given commonly used procedures and new technologies that are developed and are now examined. The second part is specific examples of the use of technology investment pattern at present. The aim of this work is to create a bibliographic search, describing the evolution of technology, investment pattern and its possible use today.
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Optimizing the ceramic tree mould taking into account the robotic shelling system
Petřík, Michal ; Šmatelka, František (referee) ; Horáček, Milan (advisor)
This diploma thesis deals with the optimization of the design pattern assembly for robot shell making system. Six types of castings were selected for optimization in regard to increase the utilization of liquid metal. The individual castings are described in the chapters and in the subchapters are described the original design pattern assembly intended for manual shell making, the designed pattern assembly shell making system with subsequent evaluation for the use of molten metal yield. The following chapters described the benefits of changing the pattern assembly design, the defects caused by this change and recommendations that should rule out the possible occurrence of these defects. The last chapter deals with a modified plate weight test, which was created directly for the conditions of the company Alucast s.r.o., where the practical part was solved.
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Optimized manufacturing of aluminium castings by using lost wax technology
Talanda, Ivan ; Horenský, Jiří (referee) ; Horáček, Milan (advisor)
Aim of this diploma thesis is to choose new pattern wax for Fimes a.s. foundry. New wax should substitute old not fully satisfactory pattern wax which caused problems in technological process resulting in increased number of rejects. New pattern wax should eliminate current problems and help foundry with producing large, thin-walled, high-quality castings. Numbers of pattern waxes supplied by world’s leading wax manufacturers were subjected to laboratory tests and pilot study. This diploma thesis is part of project Alfa TA01010766: „Research and development of production technology large, thin and high quality castings of aluminium alloys “
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Optimation of manufacturing technology of high value castings
Šmíd, Dušan ; Vašťák, Patrik (referee) ; Horáček, Milan (advisor)
The main target of this thesis is to choose the suitable hard filled wax for the invest-ment casting foundry Fimes a.s. There are several suppliers of these waxes in the World and in this work waxes of the most reputable suppliers from Europe have been investigated. During these tests there were mainly technological properties of the waxes and also dimensions of both wax patterns and also the final castings measu-red. Suitability of the tested waxes, their technological characteristics, analysis of di-mensions and finally basic economical calculations have been then used in this the-sis as a tool for the recommendation for the most suitable wax for the Fimes foundry.
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