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Design of a park bench
Hřebíček, Jan ; Rajlich, Jan (referee) ; Sládek, Josef (advisor)
The aim of this work was to create a technologically unique design and shape of a park bench, which naturally fits into the surroundings of the park. Another goal was to create a project which could be realized in practice and would be successful in mass production at reasonable costs.
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Heat treatment of iron alloys with carbon
Kubíček, Antonín ; Štěpánek, Roman (referee) ; Čupera, Jan (advisor)
This thesis deals with the processes of heat treatment, their impacts on microstructure of iron alloys with carbon and their influence on hardness of these alloys. In the research part of this thesis are discussed the alloys, which are found within the Fe-Fe3C metastable system, principles and technologies of heat treatment processing with focus on the annealing, methods of microstructure examination and hardness measurement. In the experimental part is documented and evaluated the influence of various types of annealing on hypoeutectoid and hypereutectoid steels and the influence of graphitization on the hypoeutectic cast iron. The evaluation involves comparison of microstructures obtained by light and scanning electron microscopy and comparing the hardness in the green state and after annealing.
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Solution technology of two groove guide pulley production.
Šimonek, Ondřej ; Sedlák, Josef (referee) ; Kalivoda, Milan (advisor)
Technology deals with the production of the two - groove guide pulley for two types of semiproducts. Technological process of production solves the production of the guide pulley from the first gripping of semiproduct to handing over of the guide pulley to the warehouse. Semiproducts are two types of castings with different separating plane. The material of the guide pulley is always gray - cast iron ČSN 42 2420. Production method is cutting operation with CNC machines. The production uses tools with interchangeable cutting tips. The aim of this work is to find the most optimal method of production from both time and economic perspective and to compare the two variants.
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Assessment of probable causes of corrosion damage of a glass-shaping mould
Jíša, Jakub ; Pantělejev, Libor (referee) ; Man, Ondřej (advisor)
The aim of this thesis was to characterize briefly the issue of electrochemical corrosion in the aquatic environment with a focus on cast-iron corrosion and then decide whether the observed damage to the glass-forming mold could arise in the course of two days. A simple corrosion experiment was made in which samples of cast-iron were exposed to the shower of water for 48 hours. Corrosion damage under simulated conditions did not reach the level of damage of the mold.
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Design of Hole Punch
Kreidlová, Tereza ; Křenek, Ladislav (referee) ; Sládek, Josef (advisor)
The presented bachelor thesis is focused on the design of cast-iron hole punch. This thesis deals with an analysis of current and historical products, basic technical characteristics and then describes the proposed design solution. The aim of this work is to increase the aesthetics and ergonomics of the hole punch’s handrail with the use of interesting material and to improve functionality of the whole product.
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Optimization of manufacturing of iron castings to reduce the quantity of defects
Blaha, Marek ; Brázda, Zdeněk (referee) ; Juliš, Martin (advisor)
The presented diploma thesis is focused on defects of castings as well as optimization of production with the aim of reducing the number of defective products. The theoretical part is focused on basic information about cast iron and its production, structure and mechanical properties. Another part of this thesis describes the defects of castings and options for non-destructive testing of cast iron castings. In the experimental part are analyzed three sorts of defective casting. Castings for testing were provided by JMA s.r.o. foundry. The summary contains tests results and proposals for optimization of production.
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Preliminary survey and assessment the building before renovation
Bartoň, Vojtěch ; Stehlík, Michal (referee) ; Cikrle, Petr (advisor)
This bachelor thesis deals with the construction and technical survey of a masonry building with cast iron columns. Construction-technical survey was carried out, due to the planned conversion of the building into a apartment building with public services. The thesis contains description of construction and technological survey and diagnostic methods, which includes evaluation of essential characteristics of masonry structures and cast iron columns. The practical part contains processing of diagnostic survey. Its result is determination of material and geometric characteristics of the structure.
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Production technology of a specified part
Tříletý, Vlastimil ; Sliwková, Petra (referee) ; Píška, Miroslav (advisor)
This diploma thesis deals with the design of the technology of production of machine parts in the company Walter s.r.o. The theoretical part deals with the technological possibilities of part production, the classification of cast irons and their machining, selected machining technologies at CNC milling centres and cutting tools suitable for this production. In the practical part, some technological analysis is done on the basis of which machining equipment is available in the company's machine park. The clamping fixture and clamping forces are designed for fastening of the parts. An advanced manufacturing routine is worked out according to given technical drawings, including the costs evaluation.
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Metal-lock a jeho využití v automobilovém průmyslu
Klement, Michal
This bachelor thesis covers the Metalock method as a cold repair form of damaged mechanical components. It clarifies the principle of the method in detail, materials used on repairs and particular proces, containing the set up and the execution of the method. The thesis sumarizes constructional and economical advantages and disadvantages of this type of repair from conventional processes of repairs, especially from welding. As the Metalock method aims all above to the repairs of casts, are here centrain types of cast materials, especially cast iron types and alluminium alloys analyzed. Last but not least this thesis goes in creations of in service defects and their classification. In the end, a theoretical repair od rotational component was made by the Metalock method together with concept of its balance.
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