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Effect of vibration on image quality of the electron microscope
Šafář, Pavel ; Horák, Karel (referee) ; Havránek, Zdeněk (advisor)
My thesis focuses on one the parasitic factors influencing an electron microscope during recording - i.e. the vibrations. Their impact on the quality of the shots is crucial and it is thus desirable to discover the origin of the vibrations and the way they are transmitted on the device and also to strive to eliminate this phenomen as much as possible. Measurements to estimate the source of vibration on the device as well as in its surrounding are a part of my work.
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Application of Modern Technology for Manufacturing of Prototype Model of Fixation Handle of Keyboard Stand
Rozum, Jakub ; Jaroš, Aleš (referee) ; Sedlák, Josef (advisor)
This thesis is focused on manufacturing of prototype model of fixation handle of keyboard stand using modern vacuum casting technology. The first chapter is focused on product analysis. The following parts of the thesis consist of research dealing with issues of vacuum casting and materials used for this technology, especially casting resins. Part of the thesis is manufacturing of a silicone mold based on already existing component, which is used for the casting of the new component. The silicone mold is made of a silicone mixture Silastic T – 4, for the casting of the new component is selected casting material SG 2000 / Komp. A + B. For vacuum process is used vacuum chamber MK Mini. Bachelor thesis is completed by technical and economic evaluation.
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Design of vacuum chamber an equipment for vacuum casting process
Krajča, Martin ; Marek, Jiří (referee) ; Knoflíček, Radek (advisor)
The main aim of this thesis is to make a design of a vacuum casting chamber. The first part of this thesis is based on a research of the vacuum casting chamber which is available on the market, subsequently a thorough analysis of the casting process and key construction elements of the device is made. Most of the thesis focuses on making of a new construction design of the new device. At the end of the thesis economic evaluation and risk analysis is carried out.
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Working chamber of electron beam welder
Červinka, Petr ; Mrňa, Libor (referee) ; Daněk, Ladislav (advisor)
The submitted work deals with the design of the working chamber of the electron beam welders. This vacuum chamber of the cubic shape, with a volume of approx. 100 litres will be used in the ÚPT of the AV ČR v.v.i. during building an experimental welding with electron gun performance 2 kW with accelerating voltage 60 kV. The theoretical part is about the theory of electron welding, electron beam welders of basic sections of the facility, and about possibilities of the technology for welding working chambers. In the practical part of the thesis is being thought out the design of the working chamber (construction chamber in design software), the strength test of construction chamber in the software ANSYS and the design of appropriate methods of welding. The sample of the material which is the stainless steel 17240, from which the chamber will be made, have been used in methods of welding TIG and MAG that was verified by the suitability of the chosen methods of welding.
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Design of vacuum chamber an equipment for vacuum casting process
Krajča, Martin ; Marek, Jiří (referee) ; Knoflíček, Radek (advisor)
The main aim of this thesis is to make a design of a vacuum casting chamber. The first part of this thesis is based on a research of the vacuum casting chamber which is available on the market, subsequently a thorough analysis of the casting process and key construction elements of the device is made. Most of the thesis focuses on making of a new construction design of the new device. At the end of the thesis economic evaluation and risk analysis is carried out.
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Application of Modern Technology for Manufacturing of Prototype Model of Fixation Handle of Keyboard Stand
Rozum, Jakub ; Jaroš, Aleš (referee) ; Sedlák, Josef (advisor)
This thesis is focused on manufacturing of prototype model of fixation handle of keyboard stand using modern vacuum casting technology. The first chapter is focused on product analysis. The following parts of the thesis consist of research dealing with issues of vacuum casting and materials used for this technology, especially casting resins. Part of the thesis is manufacturing of a silicone mold based on already existing component, which is used for the casting of the new component. The silicone mold is made of a silicone mixture Silastic T – 4, for the casting of the new component is selected casting material SG 2000 / Komp. A + B. For vacuum process is used vacuum chamber MK Mini. Bachelor thesis is completed by technical and economic evaluation.
|
|
|
Effect of vibration on image quality of the electron microscope
Šafář, Pavel ; Horák, Karel (referee) ; Havránek, Zdeněk (advisor)
My thesis focuses on one the parasitic factors influencing an electron microscope during recording - i.e. the vibrations. Their impact on the quality of the shots is crucial and it is thus desirable to discover the origin of the vibrations and the way they are transmitted on the device and also to strive to eliminate this phenomen as much as possible. Measurements to estimate the source of vibration on the device as well as in its surrounding are a part of my work.
|
|
|
Working chamber of electron beam welder
Červinka, Petr ; Mrňa, Libor (referee) ; Daněk, Ladislav (advisor)
The submitted work deals with the design of the working chamber of the electron beam welders. This vacuum chamber of the cubic shape, with a volume of approx. 100 litres will be used in the ÚPT of the AV ČR v.v.i. during building an experimental welding with electron gun performance 2 kW with accelerating voltage 60 kV. The theoretical part is about the theory of electron welding, electron beam welders of basic sections of the facility, and about possibilities of the technology for welding working chambers. In the practical part of the thesis is being thought out the design of the working chamber (construction chamber in design software), the strength test of construction chamber in the software ANSYS and the design of appropriate methods of welding. The sample of the material which is the stainless steel 17240, from which the chamber will be made, have been used in methods of welding TIG and MAG that was verified by the suitability of the chosen methods of welding.
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