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"Optimizing the Al casting heat treatment"
Ostrézí, Barbora ; Cileček, Jarmil (referee) ; Horáček, Milan (advisor)
This master’s thesis focuses on the heat treatment of the aluminium alloy AlSi7Mg0,6 and also investigates the effects of different coolants usage on its mechanical properties. First part is dedicated to the description of aluminium alloys, their chemical composition, behaviour and mechanical properties with particular attention to the Al-Si-Mg alloys. This part was followed by the summary of commonly used heat treatment of aluminium alloys. The third part is dedicated to the experiment. Castings and test specimens were wax casted at Alucast, s.r.o. company. After annealing, the samples were quickly cooled down in four different coolants and underwent tensile testing. Their mechanical properties (tensile strength, yield point and ductility) were evaluated as well as microstructure. In the last part, the achieved results are presented.
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Present state of investment casting technology
Ostrézí, Barbora ; Vašťák, Patrik (referee) ; Horáček, Milan (advisor)
This bachelor thesis is focusing on production of lost wax pattern and monitoring of the latest trends in this area. Thesis describes procedures of production from mother die, types of used waxes, production of ceramic shell, de-waxing and shell firing, production and using ceramic cores, removal of ceramic shell and finishing operations. The goal of this thesis is to formulate literature search dedicated to overview of presently used technologies and also the latest raw materials used in this technology.
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"Optimizing the Al casting heat treatment"
Ostrézí, Barbora ; Cileček, Jarmil (referee) ; Horáček, Milan (advisor)
This master’s thesis focuses on the heat treatment of the aluminium alloy AlSi7Mg0,6 and also investigates the effects of different coolants usage on its mechanical properties. First part is dedicated to the description of aluminium alloys, their chemical composition, behaviour and mechanical properties with particular attention to the Al-Si-Mg alloys. This part was followed by the summary of commonly used heat treatment of aluminium alloys. The third part is dedicated to the experiment. Castings and test specimens were wax casted at Alucast, s.r.o. company. After annealing, the samples were quickly cooled down in four different coolants and underwent tensile testing. Their mechanical properties (tensile strength, yield point and ductility) were evaluated as well as microstructure. In the last part, the achieved results are presented.
|
|
|
Present state of investment casting technology
Ostrézí, Barbora ; Vašťák, Patrik (referee) ; Horáček, Milan (advisor)
This bachelor thesis is focusing on production of lost wax pattern and monitoring of the latest trends in this area. Thesis describes procedures of production from mother die, types of used waxes, production of ceramic shell, de-waxing and shell firing, production and using ceramic cores, removal of ceramic shell and finishing operations. The goal of this thesis is to formulate literature search dedicated to overview of presently used technologies and also the latest raw materials used in this technology.
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