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Application of Surface Treatment on Hand Tools
Vraspírová, Eva ; Klakurková, Lenka (referee) ; Doležal, Pavel (advisor)
Bachelor's thesis deals with problems of materials, which are used to production of hand tools and implements. The theoretical part is focused on tool steels, their mechanical and technological characteristics and to their heat processing. Below there are well-arranged and described surface modification, which are applied to materials nowadays. The next part is focused on modern technology of surface modification, which are applied to hand tools. The research is mainly focused on technology of production of bits by company Wera Werk Ltd, which is deal with production and distribution of hand tightening tools, such as screwdrivers, angular keys, plug keys, bits and torque tools. Attention is also paid to technology of surface modification, e.g. based on zinc phosphate, nickel, nickel-gold and nickel-diamond-gold, used for these tools and to problems of painting. To elements interaction study light microscopy, the hardness measurement by Vickers and Brinell and scanning electron microscopy equipped by energy dispersive microanalyses.
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List of Tool Materials in Forming Operations
Horník, Tomáš ; Podaný, Kamil (referee) ; Šlais, Miroslav (advisor)
The bachelor’s thesis elaborated within the scope of full-time study of specialization B-STI Mechanical Engineering is dealing with forming technologies and choice of tool steels for the production of forming tools. In the initial part of the work we are engaged in forming theoretical background, such as forming resists and shaping rules. Another section is devoted to tool steels and their most frequent heat treatment. In the following section of search is a basic description of the selected forming operations, including the use of machines and tools and highlight of the essential elements of the technology. Requirements for material of the tool are also listed there. The goal of this work is creating steel material sheet for cutting and extrusion tools and dies. These sheets are located in the attachment of this work.
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Comparison of selected mechanical properties of aluminum alloys and structural steels
Belháč, Jakub ; Svoboda, Pavel (referee) ; Vlašic, František (advisor)
The subject of this bachelor´s thesis is a description of selected mechanical properties of metal materials and their comparison within aluminium alloys and constructional steels. The most common mechanical tests to quantify the mechanical properties are described here. The mechanical properties of constructional steels and aluminium alloys are separately described in subsequent chapters as well as their division and possibilities of application. The connection between structure, chemical composition and mechanical properties depending on a heat-treating process is shown.
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Measuring of hardness of rotary part.
Muzikant, Miroslav ; Humár, Anton (referee) ; Kalivoda, Milan (advisor)
The first part of this thesis deals with theoretical analyses of primary hardness measuring method. The second part describes issues of hardness measuring on rotary components, especially preparation of measured surface and establishing of these components. In the end of the thesis, there are practical exaples of measuring.
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Heat processing principle of operation thermal resistance annealing.
Špičková, Petra ; Humár, Anton (referee) ; Kalivoda, Milan (advisor)
The project assigned for the bachelors study program B 2307 analyses the theory of heat processing in general and furthermore resistance annealing with the focus on the technology developed by the company Heatmasters. Examples of processing methods used at other technology providers are presented, inclu-ding documentation and datasheets. Resistance annealing is based on the heat transfer from a resistive wire, which heats up by electrical current. The thermal energy is then transferred to the target material through heat radiation or con-ductance. The resistance heat processing is used both for welding and for an-nealing. Nowadays is the documentation and recording of the heat processing of significant importance. Possibilities exist that allow recording of temperature during the entire cycle of the heat processing and subsequently providing the result evidence in a form of a certificate.
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Structure of Heat Resistant Steels
Skýba, Pavel ; Foret, Rudolf (referee) ; Jan, Vít (advisor)
This work is a compilation essay about structure of heat-resistant steels, creep, strengthening and heat treatment based on available literature sources. The main chapters of the work deal with creep deformation, its mechanisms and the ways of strengthening used in heat-resistant steels. Separate chapters deal specifically with precipitation strengthening, minority phases that can be found in heat-resistant steels and their heat treatment.
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