National Repository of Grey Literature 28 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Design and manufacture of Mjölnir hammer by casting
Bubník, Šimon ; Bořil, Petr (referee) ; Myška, Martin (advisor)
The aim of this bachelor's thesis was to design suitable technologies for the production of Thor's hammer casting within the BUT school foundries. The work contains a theoretical part, which summarizes the casting technology itself, focusing on the production of non-permanent molds, cores and molding compounds. Furthermore, the work contains a practical part, which describes the process of casting production from the creation of the model and its printing, the subsequent production of the mold to the finishing of the casting.
Manufacture of cylinder head casting for engine renovation Jawa 50
Pastyřík, Petr ; Myška, Martin (referee) ; Bořil, Petr (advisor)
This project elaborats the manufacture of a cylinder head casting for an engine renovation of Jawa 50. Based on the literary pursuit of suitable foundry technologies and using 3D printing in foundry a casting production technology was designed and the cylinder head was made. The part was designed in the CAD software and then printed on a 3D printer. The printed model was formed in ceramic shell form, then melted and the form was annealed. After that the cast was casted. The last operations were fettling and finishing machining.
Production of casting cylinder for engine modification of motorcycle Jawa 50
Chvátal, Pavel ; Pernica, Vítězslav (referee) ; Bořil, Petr (advisor)
Production of casting cylinder for engine modification of motorcycle Jawa 50. This bachelor thesis deals with the design of an air-cooled cylinder for racing modification of the JAWA 50 engine and its subsequent implementation using the rapid prototyping function. The designed part was cast and the finished casting was subjected to analysis.
Segregation during solidification in austenitic-ferritic stainless steels
Kejha, Richard ; Čech, Jan (referee) ; Pernica, Vítězslav (advisor)
The master thesis deals with processes of segregation in austenitic-ferritic stainless steels. The introductory part consists of characteristics features of austenitic-ferritic steels and theoretical analysis of segregation processes. The second part shows practical measurements of segregation in experimental casting. Macrosegregation was measured on a spectrometric analyzer and simultaneously solved in the simulation program MAGMA. The aim of this thesis is to verify the effect of solidification time and dwell time between liquidus and solidus temperature on the chemical heterogeneity of duplex stainless steel casting of about 500 [mm]. Chemical heterogeneity was solved for selected alloying and accompanying elements such as C, Mo, Ni, Mn, Cr. The microsegregation was not addressed. Comparison of the mechanical properties of cast and heat treated duplex steel was done by tensile testing of samples cut from the center of the casting.
Analýza trasologických stop po pneumatikách vozidel
VRBA, Lukáš
This bachelor thesis deals with analysis and identification of tread tracks created by vehicle tire impression. In the theoretical part of this thesis essential criminal procedures for locating, documenting and obtaining tread tracks evidence at the crime scene are described. Existing software solutions for documenting and comparing such tracks are mentioned. The practical part of the thesis presents a proposal for a Python-language application in which are tire cast impressions are compared with tire prints to find possible correspondence.
Negative
Videmanová, Marie ; Žáková, Radka (referee) ; Gabriel, Michal (advisor)
The inspiration for this sculpture has gradually arisen from the experience of the previous work. I used to be in the sleeping people, in the statues of life-sized human bodies. These sculptures deformed, transformed and manipulated by various manipulations, thus getting them into unrealistic positions. These changes made it possible to see the statues, to look at their dreams. The sculptures then acted as holy scenes from the churches. The normal position of a sleeping man turned into a kind of gesture when turning. With this creation of a series of sleeping people, I cast negative shapes of castings while casting live models. Unfortunately, these negatives are one-off and are destroyed and not treated in the next process. At this time, I began to understand these negatives not only as an intermediate but also as a sculpture output that had the same function and value for me as a classic statue. Like a print, like a dream, depicting reality. This dream allows the audience to enter the figures, into their dreams. In my bachelor thesis I therefore continue to deal with human forms but in their opposite form, and I can say that I am creating a game of forms and playing with them. I did not stay with the classic forms of the bas-relief, so with the classic negative relief, but I embedded my negatives into cubes, which act as a game of cubes, which can be arranged, rotated, tossed. In my bachelor thesis I create a small group of three dice that allow this game. Cubes have only one possibility where two human characters, two human fingerprints of men and women follow. All the other possibilities of arranging the dice with the prints of these two figures are no longer logically unrelated - they follow unreasonably. Just as it is in dreams. In most cases, we have something logical in our dreams, such as characters and / or nature, but then it becomes always unrealistic in the dreams that we start flying. And these dice are like dreams - sometimes real, but mostly chaotic. That's why I gave my work a subtitle: "Negative Dreams" The word "negative" comes from the form of the statue I chose and the "dreams" of my idea, the inspiration I want to see for the viewer. Analyzing dreams, how they work, and how it enters our subconscious mind, I can not do it, I just create my own game inspired by dreaming into dreams. Dreams that seem to these two people in particular and which are diverse. I just built this work on my vision of looking into these dreams and how these dreams work. When the dream seems to me, it has a real background and then goes into something abnormal, unrealistic. Thanks to manipulation with dice I have the ability to change the real in unreal. I play dice with these two prints of people, the prints of their dreams. In my work, it represents the real basis of the dream arrangement of the cubes, in which the imprints of the two characters are anatomically linked. And then the dream comes and the dice regroup. The author or viewer has the ability to swap, change, and dice. Reality will change into a dream. The characters in a dream can be unnaturally linked or not at all. From one particular happening, a number of other, chaotic stories are developing. For the presentation of my bachelor thesis I chose the very "real" position where the characters follow on, they work. The cubes are built in a column to allow them to walk around and look at both figures. I photographed some other possibilities in various variants, lying, turned, shu
Manufacture of centrifugal Castings from iron and non-iron alloys
Žanda, Miroslav ; Kaňa, Václav (referee) ; Cupák, Petr (advisor)
The thesis describes and characterizes the foundry method of centrifugal casting, which was established in the 16th century. Based on a literature study of centrifugal casting and centrifugal force, the principle of centrifugal casting is described. Centrifugal casting can be divided according to the position of the axis of rotation to horizontal and vertical or by the method of right centrifugal casting, semi-centrifugal casting, centrifugal casting, or Tekcast method. The most basic and most common centrifugal casting product is a pipe. The pipe production is progressing from material melting, pre-operation machine preparation, casting and solidification of the melt, to adjusting and finishing of the pipe. We can cast centrifugally a several of materials, especially steel, cast iron, copper, zinc, aluminum and titanium. Centrifugal casting can also cast multilayer castings.
Genetické markery pro kvalitu hovězího masa
Darkwahová, Nicola
Bachelor thesis: Genetic markers for beef quality, focuses on genes associated with traits affecting the beef quality. In the first part of this thesis the intravital factors affecting beef quality. The second part deals with candidate genes affecting the quality of beef. CAPN1 and CAST were for meat tenderness, SCD and FASN for fatty acid composition and TG and LEP for marbling. In the last part of this thesis is summarized the findings of the leptin gene and its association with marbling and intramuscular fat content.
Additive technologies and their using when making prototype castings
Čagánek, Radim ; Horenský, Jiří (referee) ; Horáček, Milan (advisor)
This bachelor´s thesis deals with Rapid Prototyping systems and their uses in foundry. This thesis describes three most significant RP systems, on which is explained principle and distribution of them. The another part of the thesis describes how is RP systems useful in production of sand molds, ceramic shells and permanent mold.
Hydraulics forceps for heavy manipulators: compare of design welding or casting constrution
Burian, Viktor ; Šubrt, Kamil (referee) ; Knoflíček, Radek (advisor)
This bachelor´s thesis discusses forging manipulators and their use in free forging. It describes principle of functionality and structure of these machines, which serves as a special accessory for forming machines. It describes the construction technology of casting and welding structures. It executes proposal of casting and welding construction pincers for selected load capacity and the basic design calculations are made according to this proposal. Then, these structures are evaluated in technical and economical view.

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