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Change in production of cast iron
Sedláková, Jitka ; Jelínek, Radim (referee) ; Šenberger, Jaroslav (advisor)
The subject of this work is to validate the possibility of managing the cast iron strength through residual Mg content and to determine methodically whether it is possible to exploit this technology in a foundry. It is another subject to determine the economics of the exchange of cupola furnace for electric induction furnace and methodically assess the possibilities of melting in the electric induction furnace.
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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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Cutting operation of cast iron
Nejedlý, Zdeněk ; Jaroš, Aleš (referee) ; Kalivoda, Milan (advisor)
Bachelor thesis deals with cutting operation of alloys of iron with high level of carbon – cast iron. First part of the thesis deals with properties of these materials. This part is focused on production, chemical composition and form of carbon, which are aspects that influence properties and machinability of cast iron. Differences in individual types are resumed in chapter, which deals with distribution of cast iron. Second part is devoted to machining. Machinability is evaluated for each group of cast iron and individual parts devotes to tool materials, wear of the tool edge and cutting surround.
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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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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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Solution technology of two groove guide pulley production.
Pokladník, Robert ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
Technology compiling two groove pulley making for two types of billets. As a billets is used in both cases a cast iron EN-GJL-250. The technological process solves production of both variants from designing the billets to trans-mission to the storeroom. The production is realized through cutting operation by CNC machines. The tools are selected with cutting tip. Finaly both variants are compared from economical perspective.
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