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Structure and properties of magnesium alloys Mg-Ca-Zn
Hlavnička, Jiří ; Pacal, Bohumil (referee) ; Doležal, Pavel (advisor)
This master’s thesis deals with design and preparation of a new biodegradable magnesium alloy based on Mg-Ca-Zn. Based on information from literature, the Mg-3Zn-2Ca alloy was designed. The base material was produced by gravity casting and the evaluation in the as-cast and heat treated state was performed. For preparation of the experimental material, following methods were designed: squeeze casting, hot rolling and the ECAP. During preparation by hot rolling, no optimal conditions were found and significant cracks occurred in both as-cast and heat treated material. In the case of experimental material, prepared by the ECAP method with back-pressure, better combination of stress-strain properties was observed. Also the squeeze casting method showed improvement; especially the amount of casting defects was eliminated. The evaluation of microstructure and mechanical properties was performed by the light and scanning electron microscopy, RTG phase analysis and the tensile and compression tests.
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Solution Technology for Manufacturing "Slats"
Lamich, Štěpán ; Jaroš, Aleš (referee) ; Kalivoda, Milan (advisor)
The bachelor thesis deals with a technology problem of the blind slat production. The work describes the slat production in the automatic rolling mill TPLv4 made by ISOTRA a.s. It aims to find the critical point of the production and suggest a new manufacturing technique/procedure. In conclusion, the thesis evaluates the proposed manufacturing procedure from technical and economical point of view.
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Manufacturing of tubes by forming
Szczygiel, Pavel ; Peterková, Eva (referee) ; Podaný, Kamil (advisor)
This thesis deals with the basic methods of manufacture of tubes, especially focuses on the technology of seamless tubes. Assess the appropriateness and inappropriateness of individual production methods used and presents technology and types of lines used in practice. It describes in detail process of production seam pipes with a diameter of 116 mm and a length of 97 m in the plant ArcelorMittal Tubular Products Karviná a.s. Also describes in detail each operation in the working section of the strip preparation, welding and is reduced.
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Design of rolling mill for flexible single chamber tubes
Maštera, Lukáš ; Tůma, Jiří (referee) ; Blecha, Radim (advisor)
The Project is a masterpiece of Bachelor degree undergraduate of the Mechanical Engeneering at University of Technology in Brno and in general points out the basic problems associated with constructional plan of the forming machine for flexible pipe production. The Project contains the preview of production of the pipes and problems with designing the machine mainly the forming wheels draft
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Production of sleeper screw
Bartošek, Filip ; Štroner, Marek (referee) ; Lidmila, Zdeněk (advisor)
Bachelor thesis developed in the bachelor degrees addresses technological process of the production sleeper screw. The production uses technology volume thermoforming. The project was elaborated in cooperation with the company ŠROUBÁRNA KYJOV s.r.o. The screw will be made from material ČSN 11 503. This material is unalloyed construction steel with property of weld. Based on the literature study technology volume thermoforming was chosen tamping in closed instrument for the production of head screw. For the production of screw-thread was chosen technology of rolling. For the production head of screw was chosen horizontal fitting press machine. After the production there were used surfacing by galvanic zinc coating because of the better corrosion resistance.
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Production and cutting tubes
Drápala, Miroslav ; Henzl, David (referee) ; Peterková, Eva (advisor)
The submitted project created in the bachelor studies of B-STI Machinery engineering is focused on problematics of production and cutting tubes by forming. Based on the research of literature mentioned problematics and own knowledge the bachelor thesis describes several technologies of production and cutting tubes and the tools and machinery related with the described methods.
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The perspectives of hot bulk forming
Staněk, Vojtěch ; Císařová, Michaela (referee) ; Podaný, Kamil (advisor)
The project elaborated within bachelor study brings research work on the theme of perspectives of hot bulk forming. Forming technologies, their utilization so far, pertinence and supposed use in the future were reviewed on the basis of literary study. Further the importance of computer simulation and contemporary trends in processing of non-ferrous alloys are mentioned.
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Lubricants for forming technologies
Tollrian, Zdeněk ; Císařová, Michaela (referee) ; Šlais, Miroslav (advisor)
This thesis deals with the lubricants used in metal forming technology. Requirements for lubricant, grease and selection process of forming the necessary information to determine the desired properties of the lubricant. The thesis presents an overview of lubricants that are used in various forming processes, their distribution and use. In each chapter the types of lubricants that are used in engineering practice.
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The perspectives of cold bulk forming
Garguláková, Lucie ; Podaný, Kamil (referee) ; Peterková, Eva (advisor)
This thesis deals with the processes of the technology of the cold bulk forming. Different forming methodes are introduced and described. Pictures and schemes are also parts of this work. Further on, several substance types fit for cold bulk forming are presented. This work also includes a list of companies exercising this method. Products and methodes of inovations are also named in this list. In the end, the perspective of the method of cold bulk forming along with a standing of different products at the market is evaluated.
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The role of lubricants in sheet metal forming
Čvanda, Petr ; Novotný, Karel (referee) ; Peterková, Eva (advisor)
This project which was elaborated in the bachelor education present summary of lubricants in technology of forming. Annotation was based on belles-lettres of problematic of these lubricants in technology of forming and include individual sorts of lubricants and their applications in variety of forming operations
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