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Use of controlled gassing of Al-Si alloys during die casting
Jankes, Erik ; Kaňa, Václav (referee) ; Roučka, Jaromír (advisor)
This master thesis will cover the possibility of using directed gassing of Al-Si alloys in a high pressure die casting foundry. As a control gas, rotary degasser with gaseous 20 % H2 in N2 as a medium was used. Castings were casted via high pressure die casting machine. The aim of this research is to compare internal defect such as porosity or shrinkage of a casts made from degassed and control gassed melt.
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Improving the internal quality of aluminum alloy castings by the optimization of foundry technology
Mátl, Vojtěch ; Krutiš, Vladimír (referee) ; Kaňa, Václav (advisor)
This master’s thesis deals with the topic of improving the internal quality of aluminium alloy castings using foundry technology optimization. Theoretical part of this thesis consists of five chapters. These chapters deal with topics of internal defects in castings, solidification of aluminium alloys, numerical simulations in foundry, feeding and use of chills. The second part of this thesis is experimental. It focuses on defect analysis of investigated castings, casting technology simulation and suggestions for its improvement, with consideration for liquid metal utilization.
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Use of controlled gassing of Al-Si alloys during die casting
Jankes, Erik ; Kaňa, Václav (referee) ; Roučka, Jaromír (advisor)
This master thesis will cover the possibility of using directed gassing of Al-Si alloys in a high pressure die casting foundry. As a control gas, rotary degasser with gaseous 20 % H2 in N2 as a medium was used. Castings were casted via high pressure die casting machine. The aim of this research is to compare internal defect such as porosity or shrinkage of a casts made from degassed and control gassed melt.
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