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Costs reduction in production of Al-alloy castings
Nováková, Lucie ; Lána, Ivo (referee) ; Roučka, Jaromír (advisor)
This thesis deals with solving the most serious internal defects in castings made of aluminum alloys which are cast in sand molds in Slévárna a modelárna Nové Ransko Ltd. The problem solving contains a description of the problematic castings with the investigation of the structure and phases and subsequent detailed analysis of their production. The Author of this thesis also examines the influence of Fe and Mn on a possible formation of the internal porosity with the help of test meltings with the evaluation of the internal structural change. The Author’s design solution is a close checking of chemical composition with regard to the ratio Mn / Fe present in the alloy, the purchase of Foundry Degassing Unit to reduce gassiness of melted metals and better control of gassiness with the help of the appropriate equipment for the density Dichte index.
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Making a replica of mace head
Dobrovolný, Tomáš ; Janský, Vojtěch (referee) ; Bořil, Petr (advisor)
This bachelor thesis focuses on technology for production of mace head replicas. The theoretical part analyzes the technologies that will be used in its production. Starting with Rapid prototyping technology, which will be used to build the model to casting possibilities, either by evaporating casting or sand casting. The practical part describes the creation of a computer model, its printing using a 3D printer and subsequent casting by both mentioned methods.
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Making a replica of mace head
Dobrovolný, Tomáš ; Janský, Vojtěch (referee) ; Bořil, Petr (advisor)
This bachelor thesis focuses on technology for production of mace head replicas. The theoretical part analyzes the technologies that will be used in its production. Starting with Rapid prototyping technology, which will be used to build the model to casting possibilities, either by evaporating casting or sand casting. The practical part describes the creation of a computer model, its printing using a 3D printer and subsequent casting by both mentioned methods.
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Costs reduction in production of Al-alloy castings
Nováková, Lucie ; Lána, Ivo (referee) ; Roučka, Jaromír (advisor)
This thesis deals with solving the most serious internal defects in castings made of aluminum alloys which are cast in sand molds in Slévárna a modelárna Nové Ransko Ltd. The problem solving contains a description of the problematic castings with the investigation of the structure and phases and subsequent detailed analysis of their production. The Author of this thesis also examines the influence of Fe and Mn on a possible formation of the internal porosity with the help of test meltings with the evaluation of the internal structural change. The Author’s design solution is a close checking of chemical composition with regard to the ratio Mn / Fe present in the alloy, the purchase of Foundry Degassing Unit to reduce gassiness of melted metals and better control of gassiness with the help of the appropriate equipment for the density Dichte index.
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