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Use of numerical simulation for reduction of scrap from Al alloys
Doležal, Petr ; Lána, Ivo (referee) ; Krutiš, Vladimír (advisor)
This thesis deals with the possibilities of current simulation software and their use in technical practice. The aim of the thesis is to describe the process of the simulation; summarise the required initial parameters of the cast in order to achieve a credible simulation, and to describe the possibilities of the use of simulation software in the area of casting defect prediction. This theoretical analysis is applied on a specific cast, which is subject to a simulation trying to find an ideal inflow system, as well as predicting the formation of possible defects. The accuracy of this simulation will be proved by analysing an actual cast product.
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An overview of advanced rapid prototyping techniques and their use in foundry industry
Drda, Jan ; Stachovec, Ivo (referee) ; Macků, Martin (advisor)
This bachelor thesis deals with overview of Rapid Prototyping techniques and their application at foundry industry. It’s split into three parts. In the first part is shown whole process that leads to prototype creation with rapid prototyping techniques. Second part shows overview of techniques which are used around the world. It’s split into three smaller parts that shows basic allocation between techniques and there are main specifications, advantages, disadvantages and application. The last part is summary of current situation in Czech Republic and there is practical example of application Rapid Prototyping techniques at manufacturing.
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Manufacturing possibilities of sparking plug body
Strnad, Miroslav ; Kopřiva, Miloslav (referee) ; Podaný, Kamil (advisor)
Difficulties of manufacturing sparking plug body are analyzed in this thesis, which aims to select the most appropriate option. Body is circular section of steel 1.1191 (12 050), with a hole in the middle and upper part of this body is ended with hexagonal shape. The series is estimated at 1 000 000 units per year. For the production of sparking plug body are selected options from the machining and forming technologies. Specifically, turning and milling, casting, forging, a method using superplastic material and cold extrusion. Selected technologies will be reviewed based on cost to produce one piece, time requirements of manufacture of the unit, material usability and overall feasibility. According to these parameters forming is chosen as the best option.
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Present state of investment casting technology
Soukupová, Lucie ; Šmíd, Dušan (referee) ; Horáček, Milan (advisor)
The Bachelor’s thesis deals with the latest trends in investment casting technology, from wax pattern manufacture, ceramic shell manufacture, de-waxing, shell heat treatment up to metal pouring and finishing operation. In the first part, the outline of the world production and the usage of investment castings nowadays are introduced. The other parts of the project include the basic technique of using new technologies. The aim of this work is developing a literature search focused on the most modern equipment and raw materials that are used in investment casting technology and testing of wax mixtures and ceramic slurries.
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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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