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A proposal of production technology of a specified component
Janíček, Adam ; Zouhar, Jan (referee) ; Sliwková, Petra (advisor)
This bachelor thesis fosus on machining the parts from worse workable material, exactly stainless steel 1.4404, when the machined component will be the axis of the three-way valve used in food industry. The introduction of my thesis contains of theoretical information about technologies used in components production, continues with an option of machines and tools suitable for fabrication of this component, following with practical part containing the production of manufacturing process, manual, calculation of cutting conditions, production of the component on CNC machines itself, and the last part is complex control of the fabricated component.
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CNC turning of shaped stainless steel parts.
Vostřel, Jan ; Polzer, Aleš (referee) ; Píška, Miroslav (advisor)
This diploma thesis is focused on a CNC turning operation of form parts made of stainless steels. The first part of the diploma thesis is focused on a theoretical analysis of stainless steels material characteristics. The second part is focused on a concept of experiment of complex form experimental stainless steel components. In this thesis the new CNC technology is defined in a new operation system Sinumerik 840D/ShopTurn V06.04 with an application for a new multi-purpose turning centre SP280SY. The final part comprehends technical documentation, CNC programs of shaped components, their verification and overall photographic documentation.
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Corrosive Degradation of Austenitic Steels
Vykoukalová, Tereza ; Juliš, Martin (referee) ; Klakurková, Lenka (advisor)
The main requirement imposed on stainless steel is a high corrosion resistance in aggressive environment. The main aim of the thesis is a numerous group of corrosion resistance stainless steels, i.e. the stainless steel with austenitic matrix. Increased attention is paid to the corrosive attack and corrosion rate of three chosen materials with austenitic matrix in four different corrosive environments (30% solutions of sulphuric acid, nitric acid, acetin acid and sodium chloride). The method of light microscopy was used to study corrosive degradation of different materials.
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Stellite cladding on steel 1.4122
Daumer, Tomáš ; Stejskal, Ondrej (referee) ; Kubíček, Jaroslav (advisor)
Master‘s thesis describes issues of stainless steel welding. The analysis carries out the stainless steel‘s state of art in term of welding, chemical composition, physical and mechanical properties. Experimet is based on cladding of Stellite alloys to martensitic stainless steel X39CrMo17-1. The practical part describes the used devices and carries out evaluation of specifically designed heat input, macrostructure and hardness.
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Corrosion resistance of cast duplex stainless steels
Müller, Peter ; Záděra, Antonín (referee) ; Pernica, Vítězslav (advisor)
The master’s thesis deals with corrosion resistance of cast duplex steels. In the first part the corrosion mechanisms and their individual types are described, the second part characterizes the types of stainless steels in terms of their properties, use, structural components, and their impact on mechanical and corrosion properties of steels. Individual chapter is dedicated to duplex steels. In the experimental part the resistance of 1.4517 steel against pitting corrosion depending on the alloy contents and the PREN value was investigated. Four specimens graded according to PREN were cast. Supplemented with sample stirrer blade which was affected by corrosion during service they were subjected to corrosion test according to ASTM G48-11 standard in 6% FeCl3 solution. Cast specimens were subjected to tensile test and impact test.
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Welding thin-walled pipes made of stainless steels
Naď, Tomáš ; Sigmund, Marian (referee) ; Kubíček, Jaroslav (advisor)
The bachelor's thesis deals with technology of welding of thin-walled stainless steel pipes and the analysis of weldability of stainless steels. The theoretical part provides a basic description of the material's weldability and the basic defects in welding, the characteristics of stainless steels, their division, marking, alloying and a general overview of their weldability. The experimental part describes selected welding technologies used for the production of thin-walled stainless steel pipes (LBW, PAW, HFIW). Finally, the technology used to weld the presented samples of thin-walled pipes is ascertained and the macrostructure of the weld are compared.
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AUTOCENTRUM VW GROUP MIKULOV
Abikenova, Kamilya ; Hudeček, Vladimír (referee) ; Dýr, Petr (advisor) ; Kacálek, Petr (advisor)
BACHELOR THESIS DEALING WITH DOCUMENTATION FOR DSP AND DPS NEW BUILDINGS OF VOLKSWAGEN GROUP AUTOCENTRE. THE WORK IS BASED ON A PREVIOUSLY ESTABLISHED STUDY IN SUBJECT AG33. THE PROPOSED CONSTRUCTION IS LOCATED IN MIKULOV. THE LAND IS LOCATED ON A PREVIOUSLY FLAT LAND BETWEEN JIRASKOVÁ AND REPUBLICAN DEFENSE STREETS AND THE LAND ON THE WEST SIDE DEFINES THE WINE FIELDS. THE AUTOCENTER BUILDING CONSISTS OF FOUR OVERHEAD BUILDING OBJECTS, MULTI-DILATED, WHICH MEET THE REQUIREMENTS OF AUTOCENTRAL OPERATION. THESE ARE THE PRESENTATION, SALE AND SERVICE OF CARS, INCLUDING ACCESSORIES OF FOUR BRANDS ASSOCIATED IN THE VW GROUP. THE BUILDINGS ARE UNBORNEY, SINGLESTOREY-HALL TYPE. THE EXCEPTION IS ONLY THE SHOWROOM OFFICES LOCATED ON THE SECOND ABOVE FLOOR, WHICH SO DIVIDES THE ALREADY SPACE. THE CONSTRUCTION SYSTEM IS THE SAME FOR ALL OBJECTS. IT CONSISTS OF REINFORCEMENT OF A SKELETON STRUCTURE WITH STEEL TROLLEYS. THE OBJECTS ARE BASED ON REINFORCED CONCRETE FEET. VERTICAL STRUCTURES ARE MADE OF REINFORCED CONCRETE PILLARS, CLADDING OF KINGSPAN PANELS AND SCHÜCO GLASS FACADE SYSTEM. HORIZONTAL STRUCTURES CREATE STEEL COMPARTMENT TROLLEYS SPIROLL PANEL. THE ROOFING OF OBJECTS IS CREATED BY SINGLE-COATED SLOPE ROOFS DRAINED BY INTERNAL LEADS. IN SHOWROOM, THE LEADS ARE HIDDEN INSIDE THE SDK. THE INTEGRITY OF THE FOUR OBJECTS IN ONE UNIT IS ACHIEVED BY THE REPEAT OF THE SAME VIEWING ELEMENTS AND, ON THE SAME, THE LEGIBILITY OF THE INDIVIDUAL STRUCTURES IS OBJECTED BY THE GRADUATION OF INDIVIDUAL MATERIALS AND THEIR CLEAR DIVISION OF OBJECTIVES.
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Manufacture and use of high-alloy steel castings
Koláček, David ; Kaňa, Václav (referee) ; Pernica, Vítězslav (advisor)
This thesis includes material issue-knowledge of stainless steel cast. In the first part of thesis are analysed the causes of corrosion, its impact on metal material and is explained the creation of corrosion resistance.The next part of thesis introduces separation of stainless steel based on structure and chemical composition, explains its properties and its possibilities of using in practise. The thesis also explain some production processes of the stainless steel cast. In the final part of thesis are illustrated some possibilities of using stainless steel in practise.
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Plasma and microplasma welding
Ryšavý, Radek ; Kubíček, Jaroslav (referee) ; Daněk, Ladislav (advisor)
The first part of the bachelor thesis is devoted to literary recherche, which describes plasma welding and microplasma welding. Here is explained the principle of these technologies, the types of burners and the gases that enter them. Comparison of advantages and disadvantages of plasma welding and microplazma welding. And consequently the industries in which these technologies are used. The second part is devoted to the comparison of two welds. These were made by similar welding parameters. For both welds the specific heat input was calculated. Subsequent metallographic macrostructure evaluation, which used to calculate the dilution of the weld metal. Finally, hardness measurements were performed in three areas of welding: basic material, heat-affected area and weld metal.
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